A junction temperature monitoring method for an insulated gate bipolar transistor, comprising: when an insulated gate bipolar transistor (15) works, a measurement circuit measuring a turn-on voltage between a collector (15-C) and an emitter (15-E) when a turn-on current between the collector (15-C) and the emitter (15-E) of the insulated gated bipolar transistor (15) is within a preset range (S200); and determining a junction temperature of the insulated gate bipolar transistor (15) on the basis of the turn-on current and the measured turn-on voltage, so as to monitor and control the junction temperature (S202).
Provided in the present application is a communication system for an electric tool. The communication system for an electric tool comprises: an NFC module, which is associated with an electric tool and comprises at least a first memory, wherein the electric tool has an energized state and a de-energized state, and the first memory is readable at least in the energized state and the de-energized state; a processor, which is associated with the electric tool, and is configured to receive, in the energized state, an instruction from the NFC module and update information in the first memory; and a mobile device, which is configured to communicate with the processor by means of the NFC module, and is configured to read information from the first memory, wherein the communication system is configured to prevent, in the de-energized state, the mobile device from writing an instruction into the NFC module. The communication system for an electric tool in the present application has the advantages of having a simple structure, being conveniently applied, having good safety performance, etc.
A mode switching mechanism for an electric tool, and an electric tool. The mode switching mechanism enables the electric tool to comprise two motion modes, namely, an eccentric motion mode and a concentric motion mode. The mode switching mechanism comprises: a transmission shaft (25) having a first axis (X1) and a toothed section (28); a ring gear (40) and a planet carrier (50) which are arranged coaxially with the transmission shaft; an output shaft (35), which is mounted on the planet carrier and can rotate around a second axis (X2) offset from the first axis; a counterbalance (70), which is fixed to the planet carrier and for which the center of mass is offset in a direction opposite to a radial direction from the first axis to the second axis; and a planetary gear (60), which is fixed to the output shaft and meshes with both the toothed section and the ring gear. In the eccentric motion mode, the ring gear (40) is engaged by a brake member of a mode selection device of the electric tool and is prevented from rotating around the first axis; and in the concentric motion mode, the planet carrier (50) is engaged by the brake member and is prevented from rotating around the first axis. The electric tool can provide two motion modes, namely, a concentric motion mode and an eccentric motion mode, and dynamic balance is easily maintained when switching between the two motion modes.
B24B 23/03 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet l'outil étant entraîné en un mouvement combiné
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
B24B 47/12 - Entraînement ou transmission des machines ou dispositifs à meulerÉquipement à cet effet pour entraîner dans leur mouvement de rotation ou de va-et-vient les arbres porte-meules ou les arbres porte-pièces par une transmission mécanique ou par l'énergie électrique
The present application relates to a tool head (10). The tool head defines a central axis extending in a longitudinal direction (L), and comprises a driving portion (12) adapted to be engaged with a driver, a head portion (14) adapted to be engaged with a fastener, and a middle portion (16) connected to the driving portion and the head portion, wherein the driving portion is connected to the middle portion by means of a first transition portion (42) which extends from the driving portion to the middle portion in the longitudinal direction in a tapered manner; the head portion is connected to the middle portion by means of a second transition portion (44) which extends from the head portion to the middle portion in the longitudinal direction in a tapered manner; the middle portion comprises a tapered portion; the longitudinal length of the tapered portion is greater than 80% of the minimum length of the middle portion; and in the longitudinal section of the tool head passing through the central axis, the first transition portion and the second transition portion both have a concave curvature, and the tapered portion has a linear contour.
The present invention provides a power tool and a reversing switch for the power tool. The reversing switch comprises: a housing defining an internal cavity; a reversing rod rotatably attached to the housing, the reversing rod comprising an outer rod portion located outside the housing and an inner rod portion located in the internal cavity; a reversing seat movably arranged in the internal cavity, the reversing seat being coupled to the inner rod portion so as to move between a first position and a second position along with the rotation of the inner rod portion; and a reversing signal generation assembly, the reversing signal generation assembly comprising: at least one magnet fixed on the reversing seat; and at least one magnetic reed switch fixed in the internal cavity, wherein the magnet and the magnetic reed switch are configured to be coupled when the reversing seat is at the first position and to be decoupled when the reversing seat is at the second position.
H01H 36/00 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p. ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran
Electric scissors, comprising a shearing part (4); and a driving motor (1), the driving motor (1) driving the shearing part (4) to execute a shearing operation. The electric scissors further comprise: a gear box (2) between the driving motor (1) and the shearing part (4), a control switch (6) being connected to the gear box (2) so as to control the gear box (2) to be switched between at least two gear ratios; and a controller (7), the controller (7) being connected to the control switch (6) and the driving motor (1), and the controller (7) being used for adjusting the opening degree of a cutting edge of the shearing part (4) on the basis of the gear ratio of the gear box (2). The present invention has more comprehensive applicability.
An electric tool, a control device and a method for a three-phase motor thereof is disclosed. The control device includes a switching unit that has a first switching unit and a second switching unit. The first switching unit and the second switching unit each includes a plurality of switching elements corresponding to respective phases of a driving circuit of the three-phase motor. The respective switching element of the first switching unit are connected in series with corresponding switching elements of the second switching unit, respectively. The control unit further includes a control unit configured to be electrically connected to the switching unit and to generate a first control signal for controlling switching states of the respective switching elements so as to realize a first brake mode of the three-phase motor. Under the control of the first control signal, the respective switching elements of the first switching unit are turned off, and in each sub-period interval of one electrical period, the switching element in the second switching unit corresponding to a phase with a maximum back electromotive force of the three-phase motor is turned off, and the other switching elements in the second switching unit are turned on.
A circular saw includes (i) a circular saw blade that is pivotally connected to a rotary shaft and driven to rotate by way of the rotary shaft, (ii) a tool body that supports the rotary shaft and has a fixed guard covering an upper portion of the circular saw blade, (iii) a movable guard pivotally connected to the rotary shaft and closing in a normal state a cutting region of the circular saw blade, and (iv) an elastic connecting member, including a first point connected to the tool body and a second point connected to the movable guard. The movable guard, under the action of an external force, is capable of opening the cutting region. The elastic connecting member includes a rectilinearly stretching segment connected to the first point and a first torsional connecting segment connected to the second point. The rectilinearly stretching segment has a coil spring, and the first torsional connecting segment is a non-coil spring connecting member. The elastic connecting member is designed to be divided into the rectilinearly stretching segment and the torsional connecting segment, so that the excellent axial stretching performance of the coil spring is utilized, and torsion and friction of the torsional connecting segment are avoided, thereby reducing the design difficulty of the coil spring and improving the service life.
B27G 19/04 - Protecteurs ou dispositifs de sécurité adaptés aux scies à boisDispositifs auxiliaires facilitant une bonne utilisation des scies à bois pour scies circulaires pour scies circulaires à moteur manœuvrées à la main
A drill bit, comprising a drill insert (1), which has a rotation axis in a direction X, two main surfaces (la) opposite to each other in a direction Z, two side surfaces (lb) opposite to each other in a direction Y, a front end face, and a rear end face, wherein the front end face is provided with a blade (5), which comprises a chisel edge (5a) in the centre and cutting edges (5b) joined to two end points of the chisel edge (5a); wherein a cutting angle of the blade (5) is measured in a datum plane at each point on the blade, the datum plane is perpendicular to a plane YZ, and the projection of the blade in the plane YZ is orthogonal to the projection of the datum plane in the plane YZ at this point; and the difference in cutting angle at various positions on the entire blade is less than 20°, and there is a smooth transition between the cutting angle of the chisel edge (5a) and the cutting angle of the cutting edge (5b).
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
A drill bit comprises a drill insert, which defines a rotation axis and has two main surfaces opposite to each other in a thickness direction, two side surfaces opposite to each other in a width direction, a front end face, and a rear end face, the front end face being provided with a blade, which comprises a chisel edge in the centre in the width direction and cutting edges joined to two end points of the chisel edge, wherein the blade is manufactured such that the chisel edge is in the form of a curve that axially bulges forwards, and there is a smooth transition between each of the end points of the chisel edge and a start point of the cutting edge joined thereto, without forming a significant corner.
A drill bit, comprising a drill insert, which has a rotation axis in a direction X, two main surfaces opposite to each other in a direction Z, two side surfaces opposite to each other in a direction Y, a front end face, and a rear end face, wherein the front end face is provided with a blade, which comprises at least an end face blade segment defined by a line of intersection of a pair of tool faces on the front end face; the drill insert is manufactured to be adapted to perform a drilling operation at a rated impact velocity in the direction X and a rated rotational velocity about the rotation axis, so that at each point on the blade, an impact velocity component resulting from the rated impact velocity and a tangential velocity component resulting from the rated rotational velocity are combined into a resultant velocity at this point; and the blade is configured such that the distribution of the orientation of an angular bisector of the blade follows the distribution of the direction of the resultant velocity over the entire extent of the blade.
The present application relates to a power tool, comprising an external control unit (80) and a tool main body (10) which are separated from each other. The external control unit (80) comprises an external communication module (86) and an external sensor (82) used for measuring real-time values of external environment parameters. The tool main body (10) accommodates a motor (52), a drive mechanism (42), an internal communication module (58) in communication connection with the external communication module (86), and a circuit board (56) which can configure the power tool to be in optimal operation parameters for a current operation mode of at least one operation mode. The power tool further comprises a processor (84) capable of determining the optimal operation parameters on the basis of the real-time values of the external environment parameters, and the processor (84) is electrically connected between the external communication module (86) and the external sensor (82) or between the internal communication module (58) and the circuit board (56).
Provided is a motor control system for controlling a direct-current brushless motor for an electric tool. The direct-current brushless motor comprises a magnet built-in type rotor, and a stator having three phase windings. The motor control system comprises: a measurement unit used for measuring a phase voltage on each of the three phase windings; a driving unit connected between the direct-current brushless motor and a direct-current bus, and comprising three bridge arms electrically connected to the three phase windings in one-to-one correspondence, each bridge arm comprising an upper bridge arm switch and a lower bridge arm switch, and each bridge arm switch being connected in parallel to a free-wheel diode; and a control unit electrically connected to the measurement unit and the driving unit, and configured to calculate, on the basis of the measured phase voltage, an induced electromotive force of the winding phase in a non-working state, determine the position of the rotor on the basis of the calculated induced electromotive force, and control the on and off of each bridge arm switch on the basis of the position of the rotor.
A switch assembly for an electric tool. The switch assembly comprises: a contact type power source switch for connecting or disconnecting a power source of the electric tool, wherein the power source switch is provided with a switch button, which is configured to switch between a first button position and a second button position, so that the power source switch is located at a turn-off location at the first button position and is located at a turn-on location at the second button position; and a non-contact speed-regulating switch, which is provided with a body portion and a push rod connected to the body portion, wherein the push rod is configured to be pressed to drive the body portion to move, so as to realize speed regulation of the electric tool; the body portion is provided with a manipulation portion for controlling the button position of the switch button; and the manipulation portion is configured such that the switch button is located at the first button position when the push rod is not pressed, and the switch button is located at the second button position when the push rod is pressed.
A rotary reversing switch for an electric tool. The rotary reversing switch comprises: a turnable reversing rod; a reversing seat, which is configured to be driven by the reversing rod to rotate about a rotary shaft between a first rotation position and a second rotation position; a circuit board, which is fixedly provided, wherein the rotary shaft is arranged approximately parallel to the circuit board; and turning signal generating elements, which are arranged on the reversing seat and the circuit board and match each other, wherein in the first rotation position, the turning signal generating elements generate first rotation direction signals for the electric tool, and in the second rotation position, the turning signal generating elements generate second rotation direction signals for the electric tool.
Provided is a protective cover assembly (10) for an angle grinder (1). The protective cover assembly comprises a main protective cover (100) and an auxiliary cover (200). The main protective cover (100) comprises a fixing ring (101) used for being connected to the angle grinder (1) in an assembled mode, a main wall (102) connected to the fixing ring (101) and disposed parallel to a rotating work plane of the angle grinder (1), and an annular peripheral wall (103) formed by bending with respect to the main wall (102); and one end of the annular peripheral wall (103) away from the main wall (102) is provided with an inner folding edge (104). The auxiliary cover (200) is detachably assembled to the main protective cover (100); the auxiliary cover (200) comprises a protective portion (202) opposite to the main wall (102), a fitting portion (204) fitted to the inner folding edge (104), and a manual locking portion (201) matching the fitting portion (204) to keep the auxiliary cover (200) on the main protective cover (100); and the main wall (102), the annular peripheral wall (103), and the protective portion (202) jointly define to form a protective space (30) having a cutting function opening (301). According to the protective cover assembly (10), the auxiliary cover (200) is fixed by means of the existing inner folding edge (104) of the main protective cover (100), the manual locking portion (201) of the auxiliary cover (200) matches the main protective cover (100) for locking, switching of two functions of the protective cover can be achieved without complicated structural changes to the existing main protective cover (100), and the closure stability of the protective cover during working is ensured.
An electric tool (100) and a three-phase electric motor (10) control device and method thereof. The control device (20) comprises: a switch unit (21) configured to comprise a first switch unit and a second switch unit, the first switch unit and the second switch unit each comprising a plurality of switch elements corresponding to various phases of an electric motor drive circuit, and various switch elements of the first switch unit each being connected in series to a corresponding switch element of the second switch unit; and a control unit (22) configured to be electrically connected to the switch unit (21) and generate a first control signal for controlling switch states of various switch elements, so as to realize a first braking mode of a three-phase electric motor, wherein under the control of the first control signal, various switch elements of the first switch unit are turned off, and within each sub-period of an electrical period, a switch element, corresponding to the phase with the largest back electromotive force of the three-phase electric motor, in the second switch unit is turned off, and the other switch elements in the second switch unit are turned on.
H02P 3/22 - Dispositions pour l'arrêt ou le ralentissement de moteurs, génératrices électriques ou de convertisseurs dynamo-électriques pour arrêter ou ralentir individuellement un moteur dynamo-électrique ou un convertisseur dynamo-électrique pour arrêter ou ralentir un moteur à courant alternatif par freinage sur court-circuit ou sur résistance
A charging base (100) for charging an electric tool (200), comprising: a base body (110) for docking and charging an electric tool (200); and a communication module (130) for uploading and downloading operational data of the electric tool (200) between the electric tool (200) and a communication terminal. On one hand, the charging base provides a hardware basis for the application of an electric tool on the Internet of Things; on the other hand, products that need to be communicationally authenticated change from different electric tools into a single charging base product to provide automation and digitalization, thus simplifying a process. In addition, an electric tool using the charging base implements data acquisition and classification for a tool body, so that data conforming to a same identifier is uploaded or downloaded during docking the charging base for charging, thereby satisfying possible subsequent data analyses and applications. The present application also relates to an electric tool, a control method for a charging base, a communication terminal, a data transmission method, and a readable storage medium.
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
20.
ELECTRIC MOTOR STATOR ASSEMBLY, ELECTRIC MOTOR, AND ELECTRIC TOOL
Provided are an electric motor stator assembly, an electric motor, and an electric tool. The electric motor stator assembly comprises: a stator core body, which has a yoke portion and a plurality of tooth portions arranged on the yoke portion at intervals in the circumferential direction, with each tooth portion extending in the radial direction; a stator winding comprising winding wires separately wound around the tooth portions; and a plurality of rubber covers configured to respectively cover the winding wires on the respective tooth portions, wherein stator slots are provided between the rubber covers and are spaced in the circumferential direction of the stator core body. The electric motor stator assembly according to the present application improves the sealing performance and fixing performance of the tooth portions and the stator winding, and has an improved heat dissipation performance, low transformation costs, and a strong applicability.
The present application provides a removable power battery, an electric tool, a communication terminal, a data transfer method, and a readable storage medium. The removable power battery is used for supplying power to an electric tool, and comprises: a battery body used for charging and discharging; a wireless communication module used for uploading and downloading operational data of the electric tool or the removable power battery between the electric tool or the removable power battery and a communication terminal; and a data storage module used for storing an identification code for identifying the removable power battery, and used for storing the operational data of the removable power battery. According to the removable power battery of the present application, a hardware basis is provided for an Internet of Things application of an electric tool and a removable power battery, and products needing to be subjected to communication authentication are changed from different electric tools to a single product with removable power batteries, thereby implementing automation and digitization, and simplifying the process. In addition, according to the electric tool of the present application, data collection and classification for a tool body are achieved, so that data conforming to the same identification code is uploaded or downloaded when cooperating with the described randomized removable power battery, thereby satisfying the subsequent possible data analysis and application.
A flat drill bit includes a stem body, a cut flute part provided axially from an end of the stem body and being generally flat-shaped, and a threaded guiding part provided axially from an end of the cut flute part. The cut flute part includes two longitudinal wings which are configured to be rotationally symmetrical to each other about a longitudinal central axis (O) of the flat drill bit. Each longitudinal wing is formed with a cutting edge at the end of the cut flute part from which the threaded guiding part extends. A rotating trajectory profile caused by the cutting edge when the flat drill bit rotates is inclined towards the stem body and is at an angle (a) relative to the longitudinal central axis (O), and the angle (a) is in a range between 84° and 86°.
An intelligent module (100) for a safety helmet (200). The intelligent module comprises a control unit (10), an inertial measurement unit (30), and a power source (40) supporting the operation of the intelligent module (100), wherein the inertial measurement unit (30) is configured to measure motion parameters of the safety helmet (200); the control unit (10) pre-sets a motion parameter range of a helmet wearing event; and the intelligent module (100) determines whether the motion parameters measured by the inertial measurement unit (30) satisfy the motion parameter range of the helmet wearing event pre-set by the control unit (10), so as to confirm a helmet wearing action of the safety helmet (200). By means of the inertial measurement unit (30) recognizing and determining a specific helmet wearing action, the precision and accuracy of determination are improved, and the low power consumption characteristic thereof also extends the battery life of a self-contained battery.
Provided in the present application are a Bluetooth beacon configuration method, a signal transceiving apparatus, a personal mobile terminal and a readable storage medium. The Bluetooth beacon configuration method comprises: S110, extracting any one positioning Bluetooth beacon from a plurality of positioning Bluetooth beacons, arranging same in any one of a plurality of preset installation areas, and starting up a pairing mode of the positioning Bluetooth beacon; S120, a positioning Bluetooth beacon to be paired being found by a personal mobile terminal, a universal unique identification code of the positioning Bluetooth beacon to be paired being acquired by the personal mobile terminal, and pairing being completed; and S130, the positioning Bluetooth beacon acquiring configuration parameters from the paired personal mobile terminal, and automatically adjusting same. The configuration parameters comprise preset configuration information corresponding to a preset installation area acquired by the personal mobile terminal on the basis of preset configuration information of an application scenario. In the described configuration process, since specific design work has been completed before entering a site, the skill level requirements for an operator can thus be weakened. By means of simple guidance, the configuration of each positioning Bluetooth can be completed without requiring additional manual debugging. Therefore, the problem of signal interference caused by excessive power hardly exists before a positioning Bluetooth beacon after configuration is complete.
Disclosed is a protective cover assembly (100) for an angle grinding machine (400), the protective cover assembly comprising a main protective cover (10) and an auxiliary cover (20) detachably assembled on the main protective cover (10). The main protective cover (10) comprises a fixing ring (101) used for being assembled to the angle grinding machine (400), a first wall surface (102) arranged to be connected to the fixing ring (101) and parallel to a work plane of rotation of the angle grinding machine, and an annular peripheral wall (103) formed in such a way that same is generally perpendicular to the first wall surface (102), wherein the end, away from the first wall surface (102), of the annular peripheral wall (103) is provided with an inner folding edge (104), and the auxiliary cover (20) is provided with a second wall surface (201) opposite the first wall surface (102), and a fixing portion (202) snap-fitted with the inner folding edge (104).
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
B24B 55/05 - Capots de protection pour meules spécialement conçus pour machines de meulage portatives
B24B 55/10 - Équipement d'enlèvement des poussières sur les machines à meuler ou à polir spécialement conçus pour machines de meulage portatives, p. ex. à guidage manuel
27.
PROTECTIVE CASING ASSEMBLY FOR ANGLE GRINDER, AND ANGLE GRINDER
A protective casing assembly for an angle grinder, comprising: a first protective casing (1), the first protective casing (1) comprising a mounting part (11) for mounting to an angle grinder, a bottom wall (12) connected to the mounting part (11), and a sidewall (13) extending forward from the periphery of the bottom wall (12); and a second protective casing (2), the second protective casing (2) comprising a rear wall (21), a front wall (22), and a sidewall (23) connected between the rear wall (21) and the front wall (22), and the second protective casing (2) capable of being sleeved on the first protective casing (1) by rotating around the first protective casing (1), wherein; the rear wall (21) of the second protective casing (2) is engaged with the bottom wall (12) of the first protective casing (1), and the front end (14) of the sidewall (13) of the first protective casing (1) is engaged with a guidance feature (24) formed at the inner side of the front wall (22) of the second protective casing (2).
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
B24B 55/05 - Capots de protection pour meules spécialement conçus pour machines de meulage portatives
A grinding wheel sheet (100), comprising a mesh cloth (10) and an abrasive (20) covering the mesh cloth (10). The grinding wheel sheet (100) is provided with a first annular area (1001) located on an outer ring and a second annular area (1002) located on an inner ring; the abrasive (20) comprises a primary abrasive (201) filling the first annular area (1001) and a secondary abrasive (202) filling the second annular area (1002); the bulk density of the primary abrasive (201) and the secondary abrasive (202) is between 1.54-2.11 g/cm3; the primary abrasive (201) contains 80-97.5% of aluminum oxide; the secondary abrasive (202) contains 40-90% of aluminum oxide; and the content of aluminum oxide in the primary abrasive (201) is greater than that in the secondary abrasive (202). The secondary abrasive (202) selects to contain less aluminum oxide than the primary abrasive (201), and the bulk density of the primary abrasive (201) and the secondary abrasive (202) is restricted in a limited range, so that the consistent elongation and strength of the grinding wheel sheet (100) as a whole is ensured, the side load capability of the grinding wheel sheet (100) is guaranteed, and the breakdown risk is reduced.
Disclosed are a control unit (40) and a determination method for determining the rotation direction of an electric motor (10) of an electric tool, and an electric tool comprising the control unit (40). The electric motor (10) is a bidirectional rotating electric motor. The electric tool executes an effective operation stroke and an idle stroke alternately in an operation process. The control unit (40) comprises a current sensor (42) and a controller (48). The controller (48) is configured to be used for determining, when the electric tool starts a new operation process, whether a determination parameter meets a corresponding reverse direction condition; and for instructing, when the condition is met, the electric motor (10) to start such that the direction of a rotation movement output thereby is the reverse with respect to the direction of a rotation movement in the previous operation process, wherein the determination parameter and the corresponding reverse direction condition are related to the effective operation stroke executed by the electric tool since the previous reversal of the rotation movement output by the electric motor (10). The determination method is substantively only related to the effective operation stroke and is not related to the idle stroke executed by the electric tool.
A flat drill (100). The flat drill (100) comprises: a handle body (10); a cutting and chip removal part (20) which is axially provided from one end of the handle body (10) and is substantially in a flat shape; and a threaded guide part (30) which is axially provided from one end of the cutting and chip removal part (20). The cutting and chip removal part (20) has two longitudinal wing parts (23); the two longitudinal wing parts (23) are provided to be rotationally symmetric with respect to a longitudinal central axis (O) of the flat drill (100), and a cutting blade (21a) is formed, by each longitudinal wing part (23), at the end of the cutting and chip removal part (20) where the threaded guide part (30) is formed by extension; an angle is formed between a direction inclined from a rotation track surface generated by the cutting blade (21a) during rotation of the flat drill (100) towards the handle body (10) and the longitudinal central axis (O), the angle ranging from 84 degrees to 86 degrees. The torque generated by the flat drill during collision is small, so that the integrity of a cutting blade can be protected.
An auger bit (100), comprising: a handle body (10); a cutting chip removing portion (20) arranged along the axial direction from one end part of the handle body (10); and a head portion (30) provided with external threads arranged along the axial direction from one end part of the cutting chip removing portion (20), wherein the head portion (30) comprises a cylindrical shape provided with external threads arranged in the axial direction from the cutting chip removing portion (20) and a conical shape provided with external threads arranged in the axial direction from the cylindrical shape provided with external threads; the thread pitch of the external threads of the head portion (30) falls within the range of 1.05 millimeters to 1.15 millimeters, the cone angle (θ) of the conical shape falls within the range of 23° and 29°, and an outer diameter of the external threads of the cylindrical shape falls within the range of 6.1 millimeters to 6.3 millimeters. Also disclosed is a cordless handheld power tool equipped with the auger bit (100).
An air pre-cleaning assembly includes a motor that has a stator and a rotor shaft assembly configured with a fan. The motor is disposed at the upstream of the fan, and rotation of the fan is configured to yield an air flow passing through the motor. A cyclone separating element on the upstream path of the air flow on the motor includes an air inlet, a separating chamber, a dust collecting chamber, and an air outlet. The separating chamber is communicated with the air inlet. The dust collecting chamber is communicated with the separating chamber and located at its outer periphery. The air outlet is communicated with the separating chamber and located at its inner periphery. The motor is located at the downstream of the air outlet. The cyclone separating element allows clean air filtered by cyclone filtering to pass through the motor via the air outlet.
H02K 9/26 - Association structurelle de machines à des dispositifs de nettoyage ou d'assèchement de l'agent de refroidissement, p. ex. de filtres
B01D 45/16 - Séparation de particules dispersées dans des gaz ou des vapeurs par gravité, inertie ou force centrifuge en utilisant la force centrifuge produite par le mouvement hélicoïdal du courant gazeux
B25F 5/00 - Détails ou parties constitutives d'outils portatifs à moteur sans relation spécifique avec les opérations exécutées et non prévus ailleurs
B04C 3/00 - Appareils dans lesquels la direction axiale du tourbillon ne change pas
An impact mechanism (104) comprises: a hammering pipe (10) having at least one vent hole (11) on a wall thereof; a clutch component (20) configured to rotate with the hammering pipe (10); a driving gear (30) configured to drive the hammering pipe (10) in a rotating manner; and a sliding sleeve (40) configured to slide along the hammering pipe (10). The sliding sleeve (40), the clutch component (20), and the driving gear (30) are configured to surround the outside of the hammering pipe (10). The sliding sleeve (40) is further configured to move between a first position and a second position, such that when in the first position, the sliding sleeve (40) causes at least one vent hole (11) of the hammering pipe (10) to communicate with exterior air, and when in the second position, the sliding sleeve (40) seals the at least one vent hole (11) of the hammering pipe (10). An impact machine tool (100) is further provided. The impact mechanism (104) and the impact machine tool (100) have a compact structure, eliminate no-load impact, and can easily achieve a greater amount of impact energy.
B25D 11/04 - Outils portatifs à percussion entraînés par moteur électrique dans lesquels la tête de l'outil ou l'enclume est frappée par une pièce en mouvement
An electric tool includes a rotary wheel driven to rotate around a central axis thereof, an action member configured to bear a cutter of the electric tool, and a counterweight. The rotary wheel drives the action member such that it reciprocates linearly in a first direction. The rotary wheel simultaneously drives the counterweight such that it not only reciprocates linearly in the first direction in an opposite manner to the action member, but also performs reciprocating swinging movement in a plane perpendicular to the central axis. The first direction is parallel to the plane.
B23D 49/16 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités entraînés par des moteurs, p. ex. par des moteurs électriques ou magnétiques
B23D 49/10 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités
Provided is an electric tool. The electric tool comprises: a clamping device (100), used for clamping or releasing a drilling bit; an impact device (200), comprising an impact part (210) driven to impact the drilling bit and a power supply for supplying power, wherein the impact part (210) is provided with a loading position (a) and an unloading position (b), and can make a reciprocating movement between the loading position (a) and the unloading position (b), when being at the loading position (a), the impact part (210) is coupled to the power supply and can impact the drilling bit, and when being at the unloading position (b), the impact part (210) is decoupled from the power supply; and a reset mechanism (300), used for providing a reset force to keep the impact part (210) at the unloading position (b), wherein when a force transferred from the drilling bit to the impact part (210) is less than the reset force provided by the reset mechanism (300), the impact part (210) is kept at the unloading position (b). The electric tool can keep the impact part at the unloading position when the drilling bit abuts against a workpiece, thereby effectively avoiding various misoperations.
Provided in the present invention are a super battery pack and a power tool assembly. The super battery assembly is provided with a super capacitor module. The super battery pack is provided with a first connecting port connected to a power supply interface of the power tool, thus allowing the super battery pack to be connected to the power tool. The super battery pack supplies electricity to the power tool via the first connecting port. The super battery pack and the power tool of the present invention, when used jointly, significantly reduce the weight of the power tool assembly and improve the degree of convenience of using same.
Disclosed are a tool clamping system (100) and an electric tool having same. The tool clamping system (100) comprises: a base body (110) internally provided with an axially penetrating mounting hole (111); a round shank drill bit clamping assembly (120) arranged around the base body (110) and comprising a first sleeve body (121), a first clamping part (122), a first locking part (123) and a first motion adjustment part (124); and a mounting hole opening and closing assembly (130) arranged around the base body (110) and comprising a second sleeve body (131), a stop part (132), a second locking part (133) and a stop motion adjustment part (134), wherein the tool clamping system (100) has two adaptation modes; in the first adaptation mode, the first locking part (123) is separated from the second locking part (133) for unlocking, the first clamping part (122) is driven to clamp or release a round shank drill bit, and the stop part (132) is driven to block the mounting hole (111); and in the second adaptation mode, the first locking part (123) cooperates with the second locking part (133) for locking, the first clamping part (122) is kept in the state of clamping or releasing the round shank drill bit, and the stop part (132) unblocks the mounting hole (111). According to this technical solution, multiple misoperations can be effectively avoided.
The present disclosure relates to a hand-held machine tool. The hand-held machine tool includes: a first moving component as a main vibration source, the first moving component reciprocating substantially in a straight line in a first direction; a second moving component as a secondary vibration source, the second moving component having a movement state different from that of the first moving component; and a balancing block, with a linear movement direction of the balancing block being a second direction in a different plane from that of the first direction, and a movement pace of the balancing block being opposite to that of the first moving component.
B23D 51/16 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliersMoyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités de l'entraînement ou des mécanismes d'avance des outils droits, p. ex. des lames de scies, des archets
B23D 49/16 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités entraînés par des moteurs, p. ex. par des moteurs électriques ou magnétiques
B25F 5/00 - Détails ou parties constitutives d'outils portatifs à moteur sans relation spécifique avec les opérations exécutées et non prévus ailleurs
B27B 3/12 - Mécanismes pour produire le mouvement alternatif du châssisAménagements pour amortir les vibrationsSystèmes d'équilibrage
39.
SINGLE-PHASE DIRECT-CURRENT BRUSHLESS MOTOR AND CONTROL APPARATUS AND CONTROL METHOD THEREFOR
A single-phase direct-current brushless motor and a control apparatus and control method therefor. The body (100) of the motor comprises a rotor (110) and a stator (120). The control apparatus (200) comprises: a first position detecting device (210), used for detecting a position of the rotor (110) and outputting a rotor position signal; a predetermined angle detecting device (220), used for detecting whether the rotor (110) is rotated forward with respect to the first position detecting device (210) by a predetermined angle, and outputting a detection signal; a commutation circuit device (230), used for switching the power-on phase sequence of a coil winding; and a control device (240). The control device (240) is configured to control the commutation circuit device (230) to forward rotate the rotor (110) according to the rotor position signal upon receiving a reverse start instruction; and is configured to control the commutation circuit device (230) to cause the rotor (110) to rotate in a reverse direction when the detection signal indicates that the rotor (110) has rotated forward by the predetermined angle.
Provided are a drill adapter and an electric tool mounted with the drill adapter. The drill adapter comprises: a body (100) having a mounting end for insertion into the electric tool and a receiving end for detachably receiving a drill bit (500, 510), characterized in that the body (100) is provided with first, second and third limit features that limit the depth of insertion of the drill adapter into the electric tool, the first, second and third limit features act independently in turn when the drill adapter is located within the electric tool, the first limit feature is defined by a flange (130) protruding from an outer circumference of the body (100), the second limit feature is defined by a keyway (110) formed in an outer circumference of the body (100) in an axial direction to an end surface of the mounting end, and the third limit feature is defined by a receiving blind hole (120) which is adjacent to the mounting end in the outer circumference of the body (100) and is circumferentially spaced from the keyway (110).
An electric power tool includes a drive device for providing a driving force, a rotation wheel that has a central axis and is driven by the drive device to rotate around the central axis, a spindle that supports a tool holder configured to hold a tool of the electric power tool, a first intermediate member, a second intermediate member, and a counterweight device. The first intermediate member is offset from the central axis of the rotation wheel, and revolves around the central axis when driven by the rotating rotation wheel, while driving the spindle to reciprocate in a first direction. The second intermediate member is driven by the first intermediate member to rotate around the central axis and is disposed to be offset from the central axis of the rotation wheel on the side opposite the first intermediate member. The counterweight device is driven by the second intermediate member.
B23D 51/16 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliersMoyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités de l'entraînement ou des mécanismes d'avance des outils droits, p. ex. des lames de scies, des archets
F16F 15/28 - ContrepoidsLeur fixation ou leur montage
B23D 49/16 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités entraînés par des moteurs, p. ex. par des moteurs électriques ou magnétiques
A power tool, comprising: a rotary wheel (40) that is driven to rotate about the central axis (X1) thereof, an actuating member (30) that is used for bearing a cutting tool of the power tool, and a counterweight member (50). The rotary wheel (40) that is driven to rotate about the central axis (X1) thereof drives the actuating member (30) to move in a reciprocating line along a first direction (D1), while driving the counterweight member (50) to not only move in a reciprocating line opposite to the actuating member (30) along the first direction (D1), but to also move in a reciprocating pendulum in a plane perpendicular to the central axis (X1), the first direction (D1) being parallel to the plane.
B23D 49/16 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités entraînés par des moteurs, p. ex. par des moteurs électriques ou magnétiques
An electric tool comprises a circuit board assembly (201), a power supply end (203) and a motor end (205). A handle portion (101) has installation posts (1013) inserted into and provided at a middle portion of a handle cavity (1011). The circuit board assembly (201) is received in the handle cavity (1011) and has a first functional region (2011), a second functional region (2013), and an electrically conductive connection portion (2015) electrically connected to the first functional region (2011) and the second functional region (2013). The first functional region (2011) and the second functional region (2013) are separated by the installation posts (1013). The electric tool can make a quick adjustment of the electrically conductive connection portion (2015) to adapt to a new product without having to redesign the entire circuit board assembly.
An air pre-cleaning assembly and an electric tool having same. The air pre-cleaning assembly comprises a motor having a stator (2051) and a rotor shaft assembly (2053) which is provided with a fan (207). The motor (205) is provided at the upstream of the fan (207); rotation of the fan (207) can yield an air flow passing through the motor (205); a cyclone separating element (30) is provided on the upstream path of the air flow on the motor (205); the cyclone separating element (30) comprises an air inlet (301), a cyclone separating chamber (303) communicated with the air inlet (301), a cyclone dust collecting chamber (305) communicated with the cyclone separating chamber (303) and located at the outer periphery of the cyclone separating chamber (303), and an air outlet (307) communicated with the cyclone separating chamber (303) and located at the inner periphery of the cyclone separating chamber (303); the motor (205) is located at the downstream of the air outlet (307). The cyclone separating element (30) at the upstream of the motor (30) allows clean air filtered by cyclone filtering to pass through the motor (205) by means of the air outlet (307).
A screwdriver, comprising a shell (100), a battery (31) received in the shell (100), a circuit board (32), and an execution component (4) driven by the battery (31) and the circuit board (32); the execution component (4) comprises a motor (41), a reduction gear set (42), and an output shaft (401) which is located at the front end of the screwdriver and driven by the reduction gear set (42); the execution component (4) is elastically preset and when under pressure moves relative to the shell (100); the screwdriver further comprising a switch (34), the switch constitutes a part of a working circuit of the screwdriver and can be triggered in the process of the relative motion. Due to the design in which the execution component is elastically preset and when under pressure the execution component can trigger the working circuit of the screwdriver, designing and assembling and pressure-triggered starting function can be rapidly achieved; and the screwdriver is more compact and miniaturized.
An electric screwdriver, comprising a front end and a rear end that are opposite to each other, and a shell (100) connecting the front end and the rear end. The front end is provided with an output shaft (401), and the rear end is far away from the output shaft (401) and may be supported by the palm of a hand. The electric screwdriver further comprises a switch (35) which is provided on the shell (100). The switch (35) is positioned at a position which may be touched by a finger when the rear end is supported by a palm. With the present electric screwdriver, once becoming accustomed to using the palm for pressing, one can conveniently use fingers to operate the switch.
Provided is an electrically powered tool and cage assembly (200) thereof, the cage assembly (200) comprising: a cage (2), having a base (21), a rear cage (22) formed extending rearward from the base (21), and a front cage (23) formed extending forward from the base (21); a driving component (3), disposed on the rear cage (22); an executing component (4), disposed on the front cage (23) and having an output shaft (401) extending forward; the driving component (3) and executing component (4) are disposed on the cage (2) to form the cage assembly (200), which is fitted in a cylindrical housing (100) in a modular manner. Before fitting, the driving component (3) and executing component (4) are jointly mounted into the cage (2) to form the design of the cage assembly (200), thus reducing structural redundancy brought about by fixing and fitting and thereby making the overall body more compact and smaller.
A handheld machine tool comprises a first moving part (110), a second moving part (120), and a counterbalance (130). The first moving part serves as a primary vibration source and performs reciprocating movement in a first direction (A) approximately along a straight line. The second moving part serves as a secondary vibration source and has a movement state different from that of the first moving part. The straight-line movement direction of the counterbalance is a second direction (B), the second direction and the first direction are located in different planes, and the movement step of the counterbalance is opposite to that of the first moving part.
B27B 3/12 - Mécanismes pour produire le mouvement alternatif du châssisAménagements pour amortir les vibrationsSystèmes d'équilibrage
B23D 51/16 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliersMoyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités de l'entraînement ou des mécanismes d'avance des outils droits, p. ex. des lames de scies, des archets
49.
Mandrel assembly for electric tool and electric tool having same
A mandrel assembly includes a mandrel, adapter, and bit coupler. The mandrel includes a shank part axially disposed in the mandrel, an adapter receiver, and a coupler receiver. An internal hole runs axially through the adapter. The coupler includes first and second axial sections, and an axial bit connection hole with a polygonal section proximate to an inner side, and a cylindrical section proximate to an opening. An outer wall of the adapter fits with an inner wall of the adapter receiver. An outer wall of the first section fits with an inner wall of the coupler receiver. An outer wall of the second coupler fits with the internal hole of the adapter. The mandrel transmits torque, via the adapter receiver and coupler receiver, to the adapter and then to a hole saw coupled to the adapter, and to the coupler and then to a bit coupled to the coupler.
The present invention discloses a portable cyclone dust separator, which comprises a first stage cyclone separation unit having an intake for suctioning air to be dedusted, the air suctioned through the intake rotating around a first rotational axis in the first stage cyclone separation unit; and a second stage cyclone separation unit having an air inlet, the air inlet being configured to be adapted to suction the air, which needs to be dedusted secondarily by the second stage cyclone separation unit, from the first stage cyclone separation unit, the air suctioned through the air inlet rotating around at least one second rotational axis in the second stage cyclone separation unit, wherein the first rotational axis is disposed to be nonparallel to the second rotational axis. The present invention also discloses a dedusting system comprising such a portable cyclone dust separator. The portable cyclone dust separator of the present invention is fit for the operating orientations within the greater angular range.
A drill bit includes a tool body having a main body in the form of a cylinder. A chip removing structure is provided on the main body. The tool body has a distal end provided with a clamping slot and a cutter inlaid in the clamping slot. The cutter has at least two blade portions arranged circumferentially on the distal end of the tool body and extending radially relative to the tool body. Each of the blade portions has a front side along the drill bit's rotating direction and a back side against the rotating direction. The clamping slot covers the back side of one blade portion by an area larger than that used to cover the front side of the same blade portion.
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
52.
ELECTRIC TOOL COMPONENT AND CYCLONE DUST COLLECTOR THEREOF
Disclosed is an electric tool component, comprising an electric tool and a cyclone dust collector. The cyclone dust collector comprises a negative pressure generating module (1), a cyclone separation module (2) and a dust collection module (3). The dust collection module (3) comprises a base plate (31). The negative pressure generating module (1) and the cyclone separation module (2) are fixedly mounted on the base plate (31), and the base plate (31) is constructed to be suitable for supporting a barrel dust collection container (33) when the cyclone dust collector is used. The negative pressure generating module (1) is provided with an air suction port and an air discharge port, and the air discharge port is in communication with the outside. The cyclone separation module (2) comprises: a cyclone separator (21) provided with an input port, an air input port and a dust output port; a connection pipe (22) connected between an air outlet port of the cyclone separator (21) and the air suction port of the negative pressure generating module (1); and a dust suction pipe (23), an end thereof being connected to the input port of the cyclone separator (21) and the other end being configured to be suitable for connecting to the electric tool.
A reciprocating drive mechanism for a power tool includes a rotatably mounted transmission shaft that has a first central axis, a spindle with a spindle body, and a counterweight for linearly reciprocating motion under the guide of at least one guiding rod. A wobble plate is mounted on the transmission shaft and includes a first arm and second arms extending in opposite directions. The first arm and second arms are configured to cooperate with the spindle and the counterweight respectively so that, upon rotation of the transmission shaft, the first and second arms of the wobble plate drive the spindle and the counterweight to reciprocate in opposite directions parallel to the second central axis. An angle is formed between the extending direction of the first arm and the second arm and a plane defined by the first central axis and the second central axis.
B27B 3/12 - Mécanismes pour produire le mouvement alternatif du châssisAménagements pour amortir les vibrationsSystèmes d'équilibrage
B27B 3/26 - Mécanismes pour produire le mouvement alternatif du châssisSystèmes pour amortir les vibrationsSystèmes d'équilibrage
F16H 21/00 - Transmissions ne comportant essentiellement que des tringles ou des leviers, avec ou sans glissières
F16H 33/10 - Transmissions pour transmettre un mouvement rotatif à rapport de vitesse variable dans lesquelles l'autorégulation est recherchée basées essentiellement sur l'inertie à action gyroscopique, p. ex. comportant des plateaux oscillants, des manivelles obliques
B23D 51/16 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliersMoyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités de l'entraînement ou des mécanismes d'avance des outils droits, p. ex. des lames de scies, des archets
B23D 49/16 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités entraînés par des moteurs, p. ex. par des moteurs électriques ou magnétiques
A saw blade clamping device is configured to clamp at least two types of saw blades and includes a clamping seat and an operating member. The clamping seat has a connecting portion and a loading portion with a loading slot. The operating member has an operating portion with assembling and loading ends. The operating portion is assembled around the loading portion with the assembling end, and the loading end has a loading port. The operating member is rotatable relative to the loading portion. An inner wall of the operating member has a curved driving surface. An abutting element, disposed between the operating member and the clamping seat, has an abutting end, which can extend into the loading slot, and a driving end, which abuts against the driving surface. The abutting end is driven by the driving surface during rotation of the operating member to move into the loading slot.
B23D 51/10 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliersMoyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités des dispositifs pour monter les lames droites ou d'autres outils pour des dispositifs tenus à la main ou entraînés manuellement
B23D 49/16 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités entraînés par des moteurs, p. ex. par des moteurs électriques ou magnétiques
A portable power tool includes a motor housing and a motor mounted in the motor housing. The motor includes a rotary spindle. The portable power tool also includes a trigger configured to be actuated and released to switch on and off the motor. The portable power tool also includes a mechanical brake assembly connected with the trigger and automatically operated by the trigger. Accordingly, the brake assembly releases the spindle when the trigger is activated and brakes the spindle when the trigger is released.
B25F 5/00 - Détails ou parties constitutives d'outils portatifs à moteur sans relation spécifique avec les opérations exécutées et non prévus ailleurs
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
The disclosure relates to a transmission for a power tool, comprising an input gear driven by a driver, an intermediate shaft carrying first and second intermediate gears, the first intermediate gear being meshed with the input gear, an output shaft carrying an output gear, the output gear being meshed with the second intermediate gear for driving a tool bit, and proximal and distal bearings supporting proximal and distal ends of the intermediate shaft respectively. The first intermediate gear is formed with a receptacle portion which is recessed from a proximal end surface of the first intermediate gear in an axial direction towards a distal side, the proximal bearing being received in the receptacle portion at least in part in the axial direction. The disclosure also relates to a power tool comprising the above transmission. The disclosure provides a compact and robust structure.
F16H 1/22 - Transmissions à engrenages pour transmettre un mouvement rotatif sans engrenages à mouvement orbital comportant plus de deux organes engrenés avec plusieurs arbres d’entraînement ou entraînésTransmissions à engrenages pour transmettre un mouvement rotatif sans engrenages à mouvement orbital comportant plus de deux organes engrenés avec dispositions pour répartir le couple entre plusieurs arbres intermédiaires
B23D 47/12 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers de l'entraînement de lames de scies circulaires
A saw blade clamping device for a linearly reciprocating type sawing machine is able to clamp at least two types of saw blades, comprising a clamping seat having a connecting portion and a loading portion with a loading slot; an operating member comprising an operating portion and assembling and loading ends formed on opposite ends of the operating portion respectively, the operating portion being assembled around the loading portion by the help of the assembling end, and the loading end being provided with a loading port; and an abutting element disposed between the operating member and the clamping seat and having an abutting end which can extend into the loading slot, wherein the operating member is able to be rotated with respect to the loading portion, an inner wall of the operating member is provided with a driving surface formed in the form of a curved surface, the abutting element is provided with a driving end which abuts against the driving surface, and the abutting end of the abutting element is driven by the driving surface during the rotation of the operating member to move into the loading slot.
B23D 51/10 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliersMoyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités des dispositifs pour monter les lames droites ou d'autres outils pour des dispositifs tenus à la main ou entraînés manuellement
B23D 49/10 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités
A saw blade (1) comprises a saw blade body (5) having a plurality of tooth seats (7) and tips (15) attached respectively to respective tooth seats (7) of the saw blade body (5). The saw blade body (5) comprises two or three saw blade body parts (3) which can fixed together, and the tips (15) are sandwich tightly by the two or three saw blade body parts (3) to be secured to the tooth seats (7). According to the saw blade (5) of the present invention, the tips (15) may be attached fixedly to the saw blade body (5) without using any welding process, the tips (15) each may be separately detached and replaced, and it is possible to reduce the vibration and the noise during operation of the saw blade (1).
The invention relates to a circular saw blade, comprising base plate (1) and tips (2), wherein a coating (3) selected from the group consisting of molybdenum disulfide, tungsten disulfide, Teflon, and any combination thereof is applied on the tips (2).
The invention relates to a saw blade packing box comprising a first plate made of a transparent material and provided with a first saw blade accommodating portion, a second plate provided with a second saw blade accommodating portion, and a third plate provided with an observing window, wherein the first plate, the second plate and the third plate are pivotably connected to each other in succession, wherein in a state that the first plate, the second plate and the third plate overlap one another by being relatively pivoted, the third plate is sandwiched between the first plate and the second plate, and the first saw blade accommodating portion overlaps the second saw blade accommodating portion partially, and wherein the observing window overlaps the second saw blade accommodating portion partially. Saw teeth of two saw blades can be observed through the saw blade packing box.
B65D 85/58 - Réceptacles, éléments d'emballage ou paquets spécialement adaptés à des objets ou à des matériaux particuliers pour roulements à billes, rondelles, boutons ou objets similaires sphériques ou en forme de disques
A transmission switching mechanism (10) for a power tool comprises: a guiding rod (11 ); a first shifting plate (12) comprising two first shifting sections (12c,12d) and at least one first cantilever (12e), wherein each first shifting section (12c,12d) is provided with a through hole, the first shifting plate (12) is mounted slidably on the guiding rod (11); a second shifting plate (13) comprising two shifting sections (13c,13d) and at least one second cantilever (13e), wherein each second shifting section (13c,13d) is provided with a through hole, the second shifting plate (13) is mounted slidably on the guiding rod (11); and a shift member (17) comprising a shaft (15) which extends perpendicular to the longitudinal direction of the guiding rod (11) and first and second arc-shaped segments; and an elastic element. A power tool having said transmission switching mechanism (10) is further disclosed.
A transmission mechanism for a power tool includes: a shaft (7) driven by a drive mechanism of the power tool, the shaft (7) comprising a first axial portion, a second axial portion and a driving portion provided between them; a gear (8) slidably mounted to the first axial portion, wherein the gear (8) and the driving portion are provided therebetween with driving parts matable with each other; and a wobble bearing (5) mounted to the second axial portion and comprising an inner ring, an outer ring and a railway provided obliquely between them, the inner ring and the driving portion being provided therebetween with driving parts matable with each other, and the outer ring being provided thereon with a swing arm extending obliquely. A power tool, especially an electrical hammer drill, having the above mentioned transmission mechanism is also disclosed.
B23B 45/16 - Perceuses tenues à la main ou perceuses analogues portatives, p. ex. en forme de pistoletÉquipement à cet effet avec une action de percussion superposée
B25F 5/00 - Détails ou parties constitutives d'outils portatifs à moteur sans relation spécifique avec les opérations exécutées et non prévus ailleurs
F16H 57/02 - Boîtes de vitessesMontage de la transmission à l'intérieur
F16H 37/12 - Transmissions comportant principalement une transmission à engrenages ou à friction, des maillons ou des leviers, des cames, ou bien des organes appartenant à deux des trois types ci-dessus au moins
A portable cutting tool comprises a plate shaped base having a lower surface configured to abut against a workpiece and an upper surface which carries a driving mechanism thereon, the base further having an opening formed therethrough; a cutting blade driven by the driving mechanism, the cutting blade being mounted in a manner of passing through the opening of the base; and illuminating means which comprises a light emitting element mounted to the base in a distance from a plane defined by the cutting blade, the light emitting element being adapted for generating an illumination area surrounding a cutting point of the cutting blade on the workpiece. The illuminating means can provide desired illumination area and illumination strength, and is not likely to be attached by cutting chips.
A portable electric saw (100) comprises a main portion (1), a cutting saw blade (4), a base plate (3), and a guard (11) extending from the main portion (1) and covering a part of the cutting saw blade (4) which is above the base plate (3), wherein the portable electric saw is provided with at least one illuminating device for illuminating an area of the workpiece to be cut, and the at least one illuminating device comprises an adjustable device (6) for adjusting the illuminating area. With the portable electric saw, the workpiece to be cut can be well illuminated independent of the external light environment in the cutting process. The cutting precision and the working efficiency of the portable electric saw can be enhanced.
The present invention provides an electric reciprocating saw comprising: a main machine including a driving mechanism mounted on the main machine and a sawblade driven by a driving mechanism of the main machine, extending in linear; a baseplate rest against the material to be cut; and a seat frame between the baseplate and the main machine, characterized in that, the seat frame comprising an upper guide sleeve and a lower guide sleeve mutually nesting each other; a screw rod, one end of the screw rod is mounted on one of the upper guide sleeve and the lower guide sleeve; and an adjustable ring mounted in the other one of the upper guide sleeve and the lower guide sleeve, wherein the upper guide sleeve connects to the main machine, and the lower guide sleeve connects to the seat frame, wherein screw threads are provided on the adjustable ring and the screw rod which are mutually threaded connected, the screw rod and the sawblade extend in the same direction, and the relative height between the upper guide sleeve and the lower guide sleeve is adjusted by the screw threads between the adjustable ring and the screw rod.
B23D 51/00 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliersMoyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités
B23D 49/16 - Dispositifs de sciage tenus à la main ou entraînés manuellement à lames droites tenues à leurs deux extrémités entraînés par des moteurs, p. ex. par des moteurs électriques ou magnétiques
A fan for a power tool is provided, which comprises a fan body made of a plastic material and a metal disk attached to a front end of the fan body, wherein the metal disk comprises an annular disk body in the form of a flat plate, teeth, configured for speed detecting, extending outwards around a circumference of the annular disk body, and a braking surface formed by a front surface of the annular disk body. A power tool comprising the fan is also provided.
A safety clutch device for a hand-held power tool, comprising: a transmission shaft (10a); a pinion (12a) which is provided to be driven by the transmission shaft (10a); a gearwheel (14a; 14b) which is provided to be driven by the pinion (12a); a driven shaft (16a; 16b) which is provided to be driven by the gearwheel (14a; 14b); and a flexible tolerance ring (18a; 18b) which is provided to transmit a force from the transmission shaft (10a) to the driven shaft (16a; 16b).
F16D 43/20 - Embrayages automatiques à commande interne actionnés entièrement mécaniquement commandés par le couple, p. ex. embrayages à déclenchement en cas de surcharge, embrayages à glissement avec dispositifs par lesquels le couple fait varier la pression d'embrayage
A transmission shaft device for a hand-held power tool, comprising: a transmission shaft (10a-10e) with at least one bearing surface (14a-14e) for mounting a pinion (16c-16e, 18e) and /or at least one integral pinion (16b), and a wobble bearing (12a-12e); wherein the transmission shaft (10a-10e) comprises at least one portion which is permanently coupled with the wobble bearing (12a-2e) in a rotatably fixed manner.
B25D 16/00 - Machines portatives à percussion avec rotation superposée
F16D 3/26 - Joints de Hooke ou autres joints avec organe intermédiaire équivalent auquel chaque pièce d'accouplement est reliée par pivot ou par glissement
An impact tool comprises: a housing(l); a cylinder (2) and a tube like tool holder, which are coaxially fixed in the housing; a piston adapted to reciprocately move in the cylinder; a striker (6) adapted to follow the movement of the piston in the cylinder; and a tool bit (12) adapted to be impacted by the striker to move forwardly in the tool holder. The cylinder and the tool holder are mechanically separated from each other radially.
A power tool comprises a housing, a motor (2) mounted in the housing and having a rotary spindle (4), a trigger (20) configured for switching on/off the motor (2), a support member (10) fixed to the housing, and a spindle lock (40) configured to be actuated to move in a first radial direction (Rl) to lock the spindle (4) and a second opposite radial direction (R2) to release the spindle (4). When the trigger (20) is switched on, it moves the spindle lock (40) in a first axial direction (Tl), and when the trigger (20) is switched off, the spindle lock (40) is allowed to move in a second opposite axial direction (T2). The spindle lock (40) has a positioning member (44) which cooperates with a stop portion (12) of the support member (10) to prevent the power tool from being switched on and being locked at the same time.
B25F 5/00 - Détails ou parties constitutives d'outils portatifs à moteur sans relation spécifique avec les opérations exécutées et non prévus ailleurs
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
A hand-held power tool (10a; 10b), in particular a drill hammer and/or a chisel hammer, comprises a striking mechanism (12a; 12b) to produce a striking pulse along a striking axis (14a; 14b) and a drive unit (16a; 16b) to drive at least the striking mechanism (12a; 12b). Moreover, the hand-held power tool (10a; 10b) comprises a housing (18a; 18b) that surrounds at least the striking mechanism (12a; 12b) and the drive unit (16a; 16b) and comprises at least one main handle (20a; 20b) which is connected to the housing (18a; 18b) and which can be gripped by an operator. At least the bulk of the main handle (20a; 20b) is located in the housing (18a; 18b) on a first side of the striking axis (14a; 14b), and at least the bulk of the drive unit (16a; 16b) is located in the housing (18a; 18b) on a second side (22a; 22b) opposite to the first side of the striking axis (14a; 14b). Thereby, a compact structure of the hand-held power tool (10a; 10b) can advantageously be achieved, and the operator can easily handle the hand-held power tool (10a; 10b).
The invention relates to a striking mechanism for a hand-held power tool, in particular a drill hammer and/or a chipping hammer. The striking mechanism of the present inven- tion comprises a piston (12a; 12b) to produce a striking pulse and a drive unit (14a; 14b) to drive the piston (12a; 12b). The drive unit (14a; 14b) according to the invention com- prises at least one gear wheel (16a; 16b) that is rotatably driven. The gear wheel (16a; 6b) comprises an eccentric driving groove (18a; 18b) which is provided to convert a rotary motion of the gear wheel (16a; 16b) into a reciprocating motion of the piston (12a; 2b).
B25D 11/06 - Moyens d'entraînement de la pièce en mouvement
B23B 45/16 - Perceuses tenues à la main ou perceuses analogues portatives, p. ex. en forme de pistoletÉquipement à cet effet avec une action de percussion superposée
A circular saw comprises a saw blade, a motor for driving the saw blade, and a control accessory for pre-setting, measuring, displaying and controlling the cutting parameters of the circular saw.
A portable power tool comprises a motor (2) having a rotary spindle (6) and a cam brake assembly. The cam brake assembly comprises a brake plate (10) attached to the spindle (6), a brake cam (30) carrying a friction material and formed with at least two cam portions, and a stationary support (50) formed with at least two cam portions at positions corresponding to the cam portions of the brake cam (30). The brake cam (30) is rotatable around the rotation axis of the spindle (6). When the brake cam (30) rotates, by the cam action between the cam portions of the brake cam (30) and the cam portions of the stationary support (50), the brake cam (30) is moved in either of dual directions along the rotation axis of the spindle (6) so that the friction material is moved into contact with the brake plate (10) or away from the brake plate (10).
B25F 5/00 - Détails ou parties constitutives d'outils portatifs à moteur sans relation spécifique avec les opérations exécutées et non prévus ailleurs
B24B 23/03 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet l'outil étant entraîné en un mouvement combiné
B24B 47/00 - Entraînement ou transmission des machines ou dispositifs à meulerÉquipement à cet effet
75.
PORTABLE ANGLE GRINDER WITH IMPROVED PROTECTIVE GUARD
A portable angle grinder comprising a housing, a bearing flange member attached to the housing, and a protective guard mounted to the bearing flange member. The protective guard comprises a guard body, an open-type clamping collar fixed to the guard body and having two fastening tabs opposed to each other, a set of clamping screw and nut for fastening the two fastening tabs near each other while leaving a gap between them, and screw retaining means for preventing the clamping screw from moving out of the clamping collar. The screw retaining means is attached to or formed by the clamping screw.
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
B24B 55/05 - Capots de protection pour meules spécialement conçus pour machines de meulage portatives
A portable power tool comprises a motor housing (1), a motor (2) mounted in the motor housing (1) and having a rotary spindle (20), a trigger (100) adapted to be actuated and released for switching on and off the motor (2) respectively, and a mechanical brake assembly connected with the trigger (100) and automatically operated by the trigger (100) such that the brake assembly releases the spindle (20) when the trigger (100) is activated and performs brake to the spindle (20) when the trigger (100) is released.
B25F 5/00 - Détails ou parties constitutives d'outils portatifs à moteur sans relation spécifique avec les opérations exécutées et non prévus ailleurs
B24B 23/03 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet l'outil étant entraîné en un mouvement combiné
B23B 47/00 - Caractéristiques de structure des éléments constitutifs spécialement conçus pour les machines à aléser ou à percerAccessoires de ces machines
A striking mechanism for a hand-held power tool, comprising: a hammer (12) and a piston (14) to produce a striking pulse; a shaft (16) to drive said piston (14); and at least one connecting rod (18) to connect said shaft (16) to said piston (14); wherein said shaft (16) comprises a transmission portion (20) which is provided to convert a rotary motion of said shaft (16) into a reciprocating motion of said piston (14).
B25D 11/06 - Moyens d'entraînement de la pièce en mouvement
B23B 45/16 - Perceuses tenues à la main ou perceuses analogues portatives, p. ex. en forme de pistoletÉquipement à cet effet avec une action de percussion superposée
78.
LOCK-ON SWITCH SYSTEM FOR HAND DRILL AND HAND DRILL HAVING THE SAME
A lock-on switch system for hand drill comprises: a switch disposed in a switch housing(3) for controlling the operation of the drill; a trigger(2) which is adapted to be movable between a home position where the trigger(2) turns off the switch and a pushed-in position where the trigger(2) turns on the switch; a pivotable locking bar(4) having a front end adapted to be engaged with the trigger(2) for locking the trigger(2) in the pushed-in position; a slidable actuator(7) adapted for pushing the locking bar(4) into engagement with the trigger(2); and biasing means adapted for applying a force on the locking bar(4) in a direction of disengaging the locking bar(4) from the trigger(2).
H01H 13/02 - Interrupteurs ayant un organe moteur à mouvement rectiligne ou des organes adaptés pour pousser ou tirer dans une seule direction, p. ex. interrupteur à bouton-poussoir Détails
A circular saw comprises a base plate (1) defining a base plane, a bevel bracket (12) which supports a circular saw blade (10) and is pivotally mounted on the base plate (1) for tilting the blade (10), the bevel bracket (12) having a pivoting axis (X) which is parallel to the base plane and the blade (10) and perpendicular to a rotational axis of the blade, and the blade partly extending through an opening (8) forming in the base plate (1), and an anti-splinter device (100) for preventing cutting chips from splintering. The anti-splinter device comprises a pair of slides (30, 40) mounted in the opening and forming a gap between their opposing ends, an outcoming section of the blade (10) passing through the gap, and slide driving means (50) associated with the bevel bracket and driving the slides (30,40) to move in conformity with the tilting of the blade (10) to allow the gap to accommodate the positional change of the outcoming section of the blade (10).
B27G 19/02 - Protecteurs ou dispositifs de sécurité adaptés aux scies à boisDispositifs auxiliaires facilitant une bonne utilisation des scies à bois pour scies circulaires
80.
CONTROL DEVICE FOR CONTROLLING A MOTOR IN A LOW VOLTAGE DC POWER TOOL AND CONTROL METHOD THEREOF
A control device for controlling a motor (M) in a low voltage DC power tool and a control method thereof. The control device comprises: a switch unit (V1), coupling to the motor (M), and operative to adjust an input voltage of the motor (M) so as to implement a variable-speed function of the low voltage DC power tool; a driving voltage control unit (E1), coupling to the switch unit (V1), and operative to control the provision of a driving voltage (U2) to the switch unit (V1); and a driving voltage boost up unit (E2), coupling to the driving voltage control unit (E1), and operative to boost up the driving voltage (U2) of the switch unit (V1) when the driving voltage boost up unit (E2) detects that the driving voltage (U2) decreases below a desired level, wherein the driving voltage (U2) is provided from the driving voltage boost up unit (E2) to the switch unit (V1) via the driving voltage control unit (E1).
H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
A powered device having an ON-OFF mechanism comprising a housing having a mounting surface, a trigger associated with said mounting surface and having an OFF position, an ON-UNLOCKED position, and an ON-LOCKED position, and means for biasing the trigger into the OFF position from the ON-UNLOCKED position, wherein said trigger comprises a first pressing surface for manual movement of the trigger from the OFF position against said biasing means to the ON-UNLOCKED position, and a second pressing surface for manual movement of the trigger from the ON-UNLOCKED position to the ON-LOCKED position, and wherein the first pressing surface and the second pressing surface are generally adjacent to each other and form a reflex angle.
An electromechanical machine comprising an armature, at least one insulated wire wound around the armature to form an insulated wire winding with an external surface, and binding means in contact with at least a portion of the external surface, wherein the binding means is impregnated with a plurality of electrically non-conductive coating particles so that the electrically non-conductive coating particles protect the insulated wire winding from damage from airborne material.
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