The present application provides an electric vehicle and a battery system. The electric vehicle comprises: a frame; a first power consumption unit and a second power consumption unit, the first power consumption unit and the second power consumption unit being connected to the frame; and a battery system, comprising a first power supply unit and a second power supply unit, the first power supply unit and the second power supply unit each comprising at least one battery pack, the first power supply unit supplying power to the first power consumption unit, and the second power supply unit supplying power to the second power consumption unit, wherein the at least one battery pack can supply power to a handheld tool.
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
H01M 50/249 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports spécialement adaptés aux aéronefs ou aux véhicules, p. ex. aux automobiles ou aux trains
B60L 1/00 - Fourniture de l'énergie électrique à l'équipement auxiliaire des véhicules à traction électrique
A method for controlling operation of garden equipment with a battery pack (2) comprising a control unit (100) for preforming the method, when the battery back (2) is inserted into a recess (32) of the garden equipment and in data communication, via a data bus (30), with a control unit (200) of the garden equipment. The control unit (100) reads an identifier (34) of the garden equipment, which identifier (34) is used to retrieve operational control data for the specific garden equipment from a memory medium (14) of the control unit (100). The control unit (100) also collects sensor data from garden equipment sensors (20; 22; 24) and controls the operation of the garden equipment from the control unit (100) based on the retrieved control data and the collected sensor data.
The present invention provides an energy storage device, comprising four energy units having the same voltage value, each energy unit being provided with a positive electrode and a negative electrode. The energy storage device comprises a socket, the socket comprises eight separately provided electrode terminals, and the eight electrode terminals include four positive terminals respectively connected to the positive electrodes of the four energy units and four negative terminals respectively connected to the negative electrodes of the four energy units. The present invention also provides an electric tool system using the energy storage device, an electric tool having a plug for connecting the socket, and the plug being provided with male plug pieces electrically connected to the electrode terminals. The four energy units can be in different states by connecting different plugs, so that the energy storage device can output a variety of voltages. The energy storage device of the present invention is used more flexibly and can be fitted onto electric tools of a variety of nominal voltages.
The present invention provides an electric energy storage device, comprising four energy units having the same rated voltage. The four energy units are evenly divided into two energy modules; each energy module is provided with two energy units, and is provided with a positive electrode and a negative electrode; the electric energy storage device is provided with a socket; the socket comprises four voltage output terminals respectively connected to the positive electrodes and the negative electrodes of the two energy modules, and the socket is also provided with two control parts; each control unit respectively controls the two energy units in the corresponding energy module to be switched between parallel and serial connections. The present invention further provides an electric tool system using the electric energy storage device. The electric tool has a plug docked with the socket, and different plugs may connect the four energy units to form different states. The electric energy storage device in the present invention has a plurality of output voltages, and can be matched with a plurality of electric tools having different rated voltages, thereby increasing adaptability of the electric energy storage device and reducing use costs.
Provided in the present invention are an electrical energy storage apparatus, comprising N energy units with the same rated voltage and provided with sockets, wherein the N energy units are equally divided into M energy modules, and each of the energy modules comprises K energy units, where M≥2, and K≥2; the K energy units in each energy module have two connection states of series and parallel, and can be switched between the parallel and series connection states. Further provided in the present invention is an electric tool system using the electrical energy storage device. Electric tools with different rated voltages have different plugs, and the electrical energy storage device outputs different voltages after docking with the socket. The electrical energy storage apparatus of the present invention has various output voltages and can be adapted to various electrical energy storage devices with different rated voltages, thereby reducing the usage cost.
An energy storage device, comprising four energy units having the same rated voltage. The four energy units are equally divided into two energy modules; the electric energy storage device is provided with a socket. The socket comprises two voltage output terminals respectively connected to a positive electrode and a negative electrode of the electric energy storage device; the socket is also provided with an intra-module control part corresponding to each energy module to switch and control the connection state of two energy units in each energy module; the socket is also provided with an inter-module control part to switch the connection state between the two energy modules. An electric tool system using the energy storage device, an electric tool having a plug for docking with the socket, the plug being provided with a switching part that cooperates with the intra-module control part or the inter-module control part. The energy storage device can provide three output voltages, and can be matched with a variety of electric tools having different rated voltages, so that the adaptability of the electric energy storage device is increased and the use cost is decreased.
A push lawn mower, comprising a housing (1), travel wheels for supporting the push lawn mower (100), self-propelled motors for driving the travel wheels to travel, and a control circuit board (5) for controlling startup and shutdown of the self-propelled motors. The travel wheels include a pair of front travel wheels (31) and a pair of rear travel wheels (32), and the self-propelled motors include a first self-propelled motor (41) and a second self-propelled motor (42). The push lawn mower further comprises a first control element and a second control element, the first control element being used for controlling the control electric board to start up or shut down the first self-propelled motor, and the second control element being used for controlling the control circuit board to start up or shut down the second self-propelled motor. The push lawn mower can select two-wheel drive or four-wheel drive according to needs, and is easy to operate and maintain.
A01D 34/68 - FaucheusesAppareils de fauchage des moissonneuses caractérisés par des particularités relatives au type d'appareil de coupe comportant des couteaux rotatifs comportant des couteaux tournant autour d'un axe vertical dirigés à la main par un opérateur à pied à couteaux ou à roues entraînés par un moteur
An adaptive boundary wire transmitter (2) is disclosed comprising two bridge coupled power amplifiers (4, 6), a sensing element (8), a feedback amplifier (10), a compensation network (14) and an error amplifier (18). The adaptive boundary wire transmitter (2) is connected to a boundary wire installation, comprising a boundary wire (12) and feeds the boundary wire (12) with a boundary signal current. By using a feedback amplifier (10) to which the boundary signal current is fed together with the input signal together with compensation network (14) and an error amplifier (16) it is possible to generate a stable output signal from the adaptive boundary wire transmitter (2) to the boundary wire that is independent of the boundary wire length.
G05D 1/03 - Commande de la position ou du cap par référence à un système à deux dimensions utilisant des systèmes de transmission par proximité de champ, p.ex. du type à boucle inductive
9.
ROBOTIC MOWER AND METHOD FOR CONTROLLING A ROBOTIC MOWER
A method controls a robotic mower (2) to a predetermined position by means of a guide wire (8). The robotic mower comprises a control unit (22) and at least one sensor (12; 14; 16; 17; 19). At least one of the sensors detects a signal from guide wire and follows the guide wire at a first distance that is randomly determined. The robotic mower follows the guide wire until detecting, by means of at least one sensor, a signal from a boundary wire (4) and then following the boundary wire at a second distance, which is randomly determined. When detecting that the signal strength from the guide wire falls outside a first predetermined threshold, the robotic mower starts following the guide wire again. And a robotic mower is controlled by the method described above.
Safety switch (1) for a gardening device driven by a motor. The safety switch (1) comprises a main button arrangement (3) and a sub button arrangement (4) which is provided onto the main button arrangement (3). The main button arrangement (3) may pivot between a first position and a second position. In the first position the sub button arrangement (4) may be provided in an arrest position and in the second position the sub button arrangement (4) is arranged in an energize position. Further, the sub button arrangement (4) comprises biasing means (13) by means of which biasing means (13) the sub button arrangement (4) is biased towards the arrest position in the first position, and by application of an external force the sub button arrangement (4) may be moved towards a biasing force exerted by the biasing means (13) and be slid to the energize position where the main button arrangement (3) may activate the power means in the second position.
H01H 3/20 - Organes moteurs, c.-à-d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur dans lesquels un mouvement auxiliaire des pièces, ou d'un accessoire, est nécessaire avant que le mouvement principal ne devienne possible ou effectif, p. ex. pour un déverrouillage, un couplage
A lift detection arrangement in a robotic lawnmower for detecting a lift of a body (102) of the robotic lawnmower relative to a chassis (125) of the robotic lawnmower. The lift detection arrangement comprises a collision absorber (103); and a sensor arrangement comprising a spring (113), a movable part (115), a metal plate (119) and a sensor (123). The collision absorber (103) is screwd to two plastic parts (104, 106) and arranged to allow a displacement of the body (102) relative to the chassis (125) in a collision plane during a collision between an obstacle and the robotic lawnmower, but not in a vertical direction. The moveable part (115) is arranged to provide a displacement of the body (102) relative to the chassis (125) in a lift direction during a lift of the body (102). The sensor (123) is configured to sense the distance (d) to the metal plate (119) that is fixed to the moveable part (115) and to trigger a cut off of power to a cutting blade of the robotic lawnmower if the distance becomes greater than a predetermined distance.
A lift detection arrangement in a robotic lawnmower for detecting a lift of a body (102) of the robotic lawnmower relative to a chassis (125) of the robotic lawnmower. The lift detection arrangement comprises a collision absorber (103); and a sensor arrangement comprising a spring (113), a movable part (115), a metal plate (119) and a sensor (123). The collision absorber (103) is rigidly attached to the movable part (115) and arranged to allow a displacement of the body (102) relative to the chassis (125) in a collision plane during a collision between an obstacle and the robotic lawnmower, but not in a vertical direction. The moveable part (115) is arranged to provide a displacement of the body (102) relative to the chassis (125) in a lift direction during a lift of the body (102). The sensor (123) is configured to sense the distance (d) to the metal plate (119) that is fixed to the moveable part (115) and to trigger a cut off of power to a cutting blade of the robotic lawnmower if the distance becomes greater than a predetermined distance.
The present invention relates to a method and a system for docketing a robotic mower (2) with a charging station (11), the system comprises, a boundary wire (4) and a charging station loop (10) wherein the boundary wire makes a loop (4a) in the charging station (11) that is narrower than and crosses the charging station loop (10). A return signal is received from a control unit (22) commanding the robotic mower (2) to return to the charging station (11). In response thereto, the robotic mower (2) is controlled to follow the boundary wire (4) until the charging station loop (10) is detected. The robotic mower (2) then follows the charging station loop (2) until a crossing between the charging station loop (10) and the boundary wire loop (4a) is detected. Thereafter, the robotic mower (2) is controlled to follow the charging station loop (10) a first distance, and then continuing to drive the robotic mower (2) in a direction straight forward for a second distance. When the robotic mower (2) has moved the second distance it is turned a predefined angle towards the charging station (11) and controlled to follow the boundary wire loop (4a) until a charging position is reached.
The present invention provides a method and a system for docking a robotic mower (2) with a charging station (11), the system comprises, a boundary wire (4) and a charging station loop (10) wherein the boundary wire (4) makes a loop (4a) in the charging station (11) that is narrower than and crosses the charging station loop (10). A return signal is received from a control unit (22) commanding the robotic mower (2) to return to the charging station (11). In response thereto, the robotic mower (2) is controlled to follow the boundary wire (4) until the charging station loop (10) is detected. The robotic mower (2) then follows the charging station loop (2) until a crossing between the charging station loop (10) and the boundary wire loop (4a) is detected. Thereafter, the robotic mower (2) is controlled to follow the charging station loop (10) a first distance, and then continue to drive the robotic mower (2) in a direction straight forward for a second distance. When the robotic mower (2) has moved the second distance it is turned a predefined angle towards the charging station (11) and controlled to follow the boundary wire loop (4a) until a charging position is reached.
The present invention relates to a bidirectional communication channel between a robotic lawnmower (2) and a charging station (6) for data communication between the robotic lawnmower (2) and the charging station (6). The communication channel comprises a first interface (28) provided on the robotic lawnmower (2) and a second interface (38) provided on the charging station (6). The first and second interface (28; 38) are connected to each other through charging contacts (19; 50) and configured to communicate data in a Direct Current, DC-balanced way. Each interface (28; 38) is provided with an inductor (52; 54) in a charging power path between the charging station (6) and the robotic lawnmower (2). Each inductor (52; 54) having a high impedance for enabling a high data transmission rate for frequencies above 50 kHz.
H04L 29/12 - Dispositions, appareils, circuits ou systèmes non couverts par un seul des groupes caractérisés par le terminal de données
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
G05B 19/416 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par la commande de vitesse, d'accélération ou de décélération
16.
SYSTEM AND METHOD FOR CONTROLLING A SELF-PROPELLING LAWNMOWER
The present invention relates to a method and a system for controlling a self- propelling lawnmower (2), the system comprises the self-propelling lawnmower (2) having a control unit (8) and at least one sensor (12; 14; 16), a boundary wire (4) and a signal generator (6). The self-propelling lawnmower (2) is configured to move across an area (A) surrounded by the boundary wire (4). By encoding a data frame with a recognition code in an alternating current that is Direct Current, DC- balanced and that is randomly transmitted within a predetermined period of time (T), by means of the signal generator (6), to the boundary wire (4) a system robust against interference is accomplished. The data frame burst (30) is received by a sensor (12; 14; 16) and decoded by a control unit (8) in the lawnmower. By comparing the received recognition code with a stored recognition code the control unit (8) determines that the lawnmower (2) is on the inside of the boundary wire (4) if the received recognition code matches the stored recognition code, and on the outside if the received recognition code matches the inverse of the stored recognition code.
Described herein is a control assembly (1) for selectively controlling actuation of an electric motor arranged to power a hand-held power tool (3) based on combined performance of two dissimilar operator actions and a hand-held power tool (3) comprising such a control assembly (1). A switch member (6) may be closed responsive to an enabling action comprising a first of the two dissimilar operator actions. A throttle control member (7) is configured to become operable responsive to actuation of the throttle control member (7) past a first movement threshold (REF_LATCH), i.e. a second dissimilar operator action, while the switch member (6) is in the actuated state. The throttle control member (7) remains repeatedly operable above a second movement threshold (REF_RELEASE), even if the switch member (6) is opened. Actuation of the throttle control member (7) to below the second movement threshold (REF_RELEASE) will render the throttle control member (7) non-operable until renewed combined performance of the first and second dissimilar operator actions.
F16P 3/00 - Dispositifs de sécurité agissant en conjonction avec la commande ou le fonctionnement d'une machineCommandes exigeant l'emploi simultané de plusieurs parties du corps humain
The present invention relates to a trimmer which is suitable for cutting vegetation such as plants, bushes, hedges and trees. The trimmer comprises a motor housing, a shaft tube enclosing a drive shaft, a front handle being provided at the shaft tube, an electric motor as well as a cutting unit. The shaft tube which carries the front handle comprises a portion which has a smaller diameter than the rest of the shaft tube. The trimmer is ergonomic and has higher operational safety than conventional trimmers. Moreover, the shaft tube, and drive shaft enclosed within the shaft tube, can' t be crushed by compressive forces.
The present invention relates to a chainsaw which has a motorized chain that is suitable for sawing and trimming objects. The chainsaw comprises a motor housing comprising a side portion, a chain, a guide bar, an electric motor, a front handle. Safer handling and ergonomics is achieved by the motor housing comprising a concave contour on part of the surface of the side portion.
A chest buckle (30) for a harness (1) for carrying a handheld motor-driven work tool is provided. The chest buckle (30) comprises first and second parts (40, 50), wherein the first and second part (40, 50) each comprises at least two means (49, 59) for attaching straps of the harness (1) thereto. The first part (40) comprises a recess (41) defining a cavity arranged to accommodate the second part (50) therein, wherein the second part (50) comprises a resilient locking member (52) arranged to protrude through a hole (43) in the first part when the second part (50) is accommodated in the cavity to lock the first and second parts (40, 50) together.
A44B 11/25 - BouclesFermetures similaires pour attacher ensemble des courroies ou similaires, p. ex. pour ceintures des sécurité avec plusieurs pièces séparables
A45F 3/14 - Courroies de portageHarnais pour porter les sacs
A carrier assembly for a harness (1) for carrying a backpack accessory, the carrier assembly comprising a back plate (10) including connections for shoulder straps (2) and an interface plate (20) adapted to be attached to the backpack accessory, the back plate (10) comprises a coupling interface (12) on a rear face (10a) thereof arranged to be removably connected to a corresponding coupling interface (22) on a front face (20b) of the interface plate (20) .
A cutting tool(1) comprising a housing(100) is provided, the cutting tool (1) has a longitudinal extension from the housing(100) to a cutting element(300) provided at the distal end of the cutting tool(1). The housing(100) is provided with a rigid impact protecting member(400) having at least a first rigid portion(401), that being transverse to the longitudinal extension of the cutting tool and provided at a distance from the housing such that the housing is protected from an impact.
A power tool comprises a non-metallic housing (20) comprising an electrical motor (22) and a battery (24). The electrical motor (24) is controlled by a controller provided on a Printed Circuit Board, PCB, (10), wherein a surface of the PCB (10) is in contact with a metallic cooling plate (2) arranged on a bottom side (21) of the non-metallic housing (20).
The present invention relates to a battery (100) for power tools comprising a sealed casing (2), i.e. a casing (2) without any vents or other openings. The sealed casing (2) encloses a plurality of battery cells (6). An upper side (8) of the battery (100) is made of a metal part (4), i.e. the side of the battery (100) that extends outside a battery compartment (10) of a power tool when the battery (100) is inserted in the battery compartment (10). The metal part (4) is arranged to cool the battery cells (6) through conductive cooling.
The present invention relates to a housing (2) for power tools such as chainsaws, blowers, trimmers or hedge trimmers. The housing (2) has a front end (4), at which a tool (20) of the power tool is attached. The housing furthermore comprises a rear end (16) and a top side (18). A battery compartment (14) is provided at the top side (18) of the housing (2) and extends inside the housing (2) and has a shape adapted to receive a battery (6). The shape is essentially cuboidal and has a rectangular cross section looking at the top side (18) of the housing (2). The short sides (22) of the rectangular cross section are substantially parallel with the rear end (16) and the front end (4) of the housing (2).
A carrier assembly for a harness (1) for carrying a motor-driven power tool. The carrier assembly comprises a back plate (10) and an interface plate (40) including connections (41) for shoulder straps (2) , the back plate (10) comprises a coupling interface (12) on a front face (10b) arranged to be removably connected to a corresponding coupling interface (42) on a rear face (40a) of the interface plate (40) , the coupling interface (12) of the back plate (10) is adapted to be connected to and disconnected from the coupling interface (42) of the interface plate (40) in an at least partially translational or linear movement which is substantially parallel to the back plate (10) .
A carrier assembly for a harness (1) for carrying a handheld motor-driven tool work tool is provided. The carrier assembly comprises a back plate (10) including connections for shoulder straps (2), a hip belt (4), and means for attaching the work tool. The back plate (10) is arranged to be connected to the hip belt (4) by means of a pivotal connection joint (50) to allow rotation about an axis substantially perpendicular to a plane defined by the back plate (10).
A backpack tool kit comprises: a backpack assembly comprising a casing and a battery pack received in the casing; and at least one tool connected to the casing of the backpack assembly and electrically connected to the battery pack. The backpack tool apparatus can be provided with multiple tools to simultaneously realize different operations and functions. Moreover, the tools are configured to be detachably connected to the backpack assembly, and can be replaced with different tools to realize different operations and functions according to needs.
A01G 1/12 - Outils pour la culture du gazon; Instruments pour le balayage des pelouses; Rouleaux horticoles (machines pour l'entretien des prairies ou des pelouses A01B 45/00; tondeuses à gazon A01D 34/00)
A47L 5/14 - Caractéristiques de structures des aspirateurs à pompes à air ou compresseurs à moteur, p. ex. fonctionnant par le vide créé par le moteur d'un véhicule nettoyant par ventilation, combiné également avec un nettoyage par aspiration
E01H 1/08 - Emploi de l'air comprimé pour détacher ou enlever les matières indésirablesSéchage par la chaleur uniquement, ou par des courants de gazNettoyage par projection de particules abrasives
E01H 5/10 - Enlèvement de la neige ou de la glace des routes ou surfaces analoguesAménagement de la pente ou de la rugosité de la neige ou de la glace par application de chaleur
29.
SELF-FEEDBACK TYPE CLEANING MACHINE AND CONTROL METHOD FOR SAME
Disclosed is a self-feedback type cleaning machine and a control method for same, said cleaning machine comprising a water pump (2), an electric motor (1) for driving said water pump (2), a high-pressure water wand (3) connected to said water pump (2), a system controller (4) for controlling the electric motor (1), and a nozzle assembly (5) mounted upon the high-pressure water wand (3). The nozzle assembly (5) comprises at least two nozzles, the system controller (4) controlling switching between said two nozzles. The system controller (4) controls and regulates the power of the electric motor (1), causing said electric motor (1) to drive the water pump (2) to output to different nozzles water streams of different pressure. By means simply of control by the system controller, the present self-feedback type cleaning machine is able to regulate motor power and switching among nozzles; efficiency is high and the range of applicability is wide.
A battery compartment device is fixed at a power head and provides power thereto. The battery compartment device comprises: a casing (100a) enclosing a space to form a battery compartment (105) accommodating a battery pack (101); and a PCB control board (110) electrically connected to the battery pack and fixed at the casing (100a). Since the PCB control board is fixed to the casing of the battery compartment device, the battery compartment device can be fixedly disposed in front of the power head, and the PCB control board can be separately installed at the battery compartment device, increasing installation efficiency and reducing manufacturing costs. Further, because it is not required to install, on a housing of the power head, the PCB board, a structure inside the housing remains relatively simple, making it easier to process and manufacture the housing without resulting in an untidy circuit of the power head after installation. Also provided is the power head comprising: a housing (202) having the battery compartment device fixed therein. Further provided is a power cord fixing device comprising: the power head comprising a housing (4) having a through hole (10) used to guide a connection line from inside the housing (4); and a power cord cover (1) fixing and covering the through hole (10), and forming, with the housing (4), an accommodation chamber to accommodate a plug of the power cord (2).
Disclosed is a power equipment, comprising a drive motor located within a shell of the power equipment, with the drive motor providing self-propelled power; and a control system, comprising a guide rail (2) fixed on a push rod (1) extending from the shell, and a panel assembly (3) sliding along the guide rail. The drive system is provided with a locking assembly capable of converting between an artificial power drive mode and a self-drive mode. The power equipment can solve the problem of speed control during movement.
A control panel, a self-propelled switch apparatus, and a power device (13). The control panel comprises a push rod (1) connected to a machine body and a panel assembly (2) reciprocatingly sliding on the push rod. The control panel further comprises lock assemblies (41, 42) connected to the panel assembly. The lock assemblies (41, 42) are adapted to lock the panel assembly on the push rod and unlock the control panel and the push rod, so that a device in which the control panel is disposed can be switched between a manual power drive mode and a self-propelled drive mode. By means of the solution, a garden tool can walk in a self-propelled manner, and can also be pushed to walk.
H01H 27/06 - Interrupteurs actionnés par un élément amovible, p. ex. une clé, une broche ou une plaqueInterrupteurs actionnés par des éléments de réglage suivant une seule combinaison prédéterminée choisie parmi plusieurs possibilités de réglage la clé est insérée et ensuite tournée pour actionner l'interrupteur
A01D 34/00 - FaucheusesAppareils de fauchage des moissonneuses
A01D 75/00 - Accessoires pour moissonneuses ou faucheuses
An electric zero-turn riding mower, comprising: a frame (1), an operation assembly (2) provided on the frame (1) for operating the mower, a mobility assembly (3) connected to the frame (1) for movement, a mowing assembly (4) provided on the frame (1) for mowing a lawn, and a height adjustment assembly (5) connected to the frame (1) for adjusting the height of the mowing assembly (4). A control assembly (6) is provided on the frame (1). The control assembly (6) comprises an electric controller (61) and a battery pack (62) electrically connected to the electric controller (61). The battery pack (62) provides power to the operation assembly (2), mowing assembly (4), height adjustment assembly (5), and mobility assembly (3). The electric controller (61) is used to control an operational status of the mowing assembly (4), height adjustment assembly (5), and mobility assembly (3). The electric zero-turn riding mower mitigates vibration, reduces noise, and generates little pollution. The mower can be operated and maintained at low costs and is comfortable to operate.
An electric-powered zero-turn stand-on mower, comprising: a frame formed by connecting a rear frame assembly (1) and a front frame assembly (2); an operating assembly (3), provided on the rear frame assembly, for controlling the mower; a drive wheel assembly (11) connected to the rear frame assembly; a turning wheel assembly (21) connected to the front frame assembly; a stand-on assembly (4), fixedly connected to the rear frame assembly, for an operator to stand on; a height adjustment assembly (5) connected to the rear frame assembly; a mowing platform assembly (6) connected to the height adjustment assembly, wherein the height adjustment assembly is used for adjusting the height of a mowing assembly; a drive axle (12), provided on the rear frame assembly, for independently driving the drive wheel assembly; a battery housing formed by a connection of the front frame assembly and the rear frame assembly; and a battery pack (7), provided in the battery housing, for providing power to the drive axle and the mowing platform assembly (7). The electric-powered zero-turn stand-on mower uses electric power and an optimized transmission structure to enhance control precision and reduce costs. The mower generates little vibration, low noise, and zero pollution, and provides user comfort.
A01D 34/66 - FaucheusesAppareils de fauchage des moissonneuses caractérisés par des particularités relatives au type d'appareil de coupe comportant des couteaux rotatifs comportant des couteaux tournant autour d'un axe vertical montés sur un véhicule, p. ex. un tracteur, ou tirés par un animal ou un véhicule à plusieurs couteaux
A piggyback working appliance, a piggyback blower, and a control handle assembly (600) applied in the piggyback working appliance and the piggyback blower. The piggyback working appliance comprises: a battery pack (200) used for providing electric energy; a power assembly (300) electrically connected to the battery pack (200) to convert the electric energy provided by the battery pack (200) into mechanical energy; and a piggyback assembly (100) that supports the battery pack (200) and the power assembly (300) and is suitable for being carried on the back of a human body. The piggyback working appliance can reduce the force imposed on an arm of an operator, and also has the advantages of low noise, small vibration, easy operation, easy cleaning, and environmental friendliness.
A01G 1/12 - Outils pour la culture du gazon; Instruments pour le balayage des pelouses; Rouleaux horticoles (machines pour l'entretien des prairies ou des pelouses A01B 45/00; tondeuses à gazon A01D 34/00)
F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p. ex. pour la ventilation
A waist-hung blower comprises a whole-machine assembly and a waistband assembly. The whole-machine assembly comprises a main machine (1), a control device (4), and an air discharge pipe (3). A driving device is assembled in the main machine (1). The driving device is connected to a power source by means of a power line (5). The main machine (1) is electronically connected to the control device (4). The air discharge pipe (3) is assembled at the front end of the main machine (1), and is connected to the main machine (1) by means of a flexible pipe (2). The waistband assembly comprises a waistband (8). The waistband (8) is detachably or fixedly connected to the main machine (1). The tightness degree of the waistband (8) is adjusted by means of a trip (10). The blower is hung to a waist, so that it is very convenient to operate the air discharge pipe (3) by using an arm, thereby alleviating the feeling of fatigue, prevented concentrated stress on the arm, and optimizing the human-machine working efficiency.
A direct current (DC) brush axial flow hair dryer comprises a housing (1) having an air inlet channel (3) provided at one end thereof, and a bypass channel (7) provided therein. A motor (9) is installed in the bypass channel (7). A flow guiding cone (8) is connected and fit to one end of the bypass channel (7) to form an enclosed structure. A ventilation structure (15) is configured at the enclosed structure. The ventilation structure is connected to the inside of a main body of the bypass channel (7) to form an air heat dissipating channel. The DC brush axial flow hair dryer employs a brush motor as the motor (9), which has a reduced cost in comparison to a brushless motor. The motor operates stably, has a high safety coefficient, and is easier to maintain and replace. The heat dissipating channel has an optimized design, increasing heat dissipation efficiency of the motor, and extending a service life of the motor.
A lithium battery management system and a control method therefor. The lithium battery management system comprises: a battery bank used for supplying power and consisting of a plurality of lithium cells; a battery pack output switch for controlling ON or OFF of an output current of a battery bank, the battery pack output switch being a normally open switch; a battery management system control unit for controlling ON or OFF of the battery pack output switch; and an output resistor disposed in parallel to the battery pack output switch. The lithium battery management system can be turned on or off by means of connection or disconnection between a battery pack having the lithium battery management system and an external device. When a user operates the external device, functions of a dedicated switch in the prior art are achieved, and the beneficial effects of cost reduction, operation convenience and the like are provided.
Disclosed is a heat dissipation structure of a brushless motor. The brushless motor (2) is covered by a fan cover (3) which is provided with an air outlet (4) and an air inlet (5). A fan (6) is fitted at the end part of a motor shaft near the air inlet. A motor control panel (1) is fixed at the upper end of the air inlet. Electronic components (9) on the motor control panel are fixed to a heat dissipation sheet (7) via a circuit board. A heat dissipation rib (8) is arranged below the heat dissipation sheet and faces the air inlet. The distance from the bottom of the heat dissipation rib to the air inlet is 10-20 mm. According to the present heat dissipation structure, the fan and the fan cover are both used to perform ventilation and heat dissipation on the electronic components of the motor control panel, so as to achieve the purpose of lowering the temperature of the brushless motor and the motor control panel.
H02K 9/06 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine comportant des moyens pour établir la circulation d'un agent de refroidissement avec des ventilateurs ou des dispositifs d'entraînement mûs par l'arbre de la machine
H02K 29/00 - Moteurs ou génératrices à dispositifs de commutation non mécaniques, p. ex. tubes à décharge ou dispositifs à semi-conducteurs
40.
GARDEN TOOL POWER SYSTEM WITH AUTOMATIC WALKING FUNCTION
A garden tool power system with an automatic walking function comprises a motor (14), a speed reducer, and drive shafts. The drive shafts comprise a left shaft (1) and a right shaft (11) that are connected via a connection shaft (13). A large gear wheel is assembled on the connection shaft (13). At least two guide rods (8) are provided laterally on the large gear wheel. Two centrifugal blocks (18) are assembled between the guide rods, and a reset spring (6) is ringed around each of the guide rods (8). Two ends of the reset spring (6) are respectively pressed on the two centrifugal blocks (18). A rotatory fixation sleeve is assembled at the peripheral of the centrifugal block (18), and a buckle structure fitted with the centrifugal block (18) is provided on the rotatory fixation sleeve, and the rotatory fixation sleeve is fixedly connected to the drive shafts. By using the manner, the apparatus can realize free switching between automatic walking and moving forward or backward by manual operation, so that work efficiency is improved, and the speed reducer has a simple structure and low costs.
A direct current drill comprises a motor, a speed reducer gear box (2), a bit (3), and a supporting platform (4). The motor (1) transfers power to the speed reducer gear box (2). An output shaft of the speed reducer gear box (2) is connected to the bit (3). The speed reducer gear box is fixed on the supporting platform (4). The motor is a direct current motor (1), and the direct current motor (1) is powered by a battery pack (17). An elbow extending toward both sides is connected to the supporting platform (4), and two ends of the elbow are both operating handles (18), a control switch (19) being provided on the operating handle (18) at one side. By the adoption of a direct current motor and a large-capacity battery pack, the shortcomings of waste gas and loud noise in a process of using a gasoline engine drill are overcome, and the problem of safety of an operator is resolved. Moreover, clean energy is used in a use process, thereby causing no harm to the environment. The direct current drill is easy to carry, so that requirements for outdoor work are satisfied. In addition, the direct current drill features convenient operation, light weight, and economic and environmental protection.
A reverse rotation control system of an electric tool and control method for the same. The system comprises: a control center module being a core module and configured to detect a state of each signal of a peripheral module thereof, to process the signal and then to issue a processing instruction; a motor drive module configured to receive a timing signal sent from the control center module and to regularly drive an upper bridge and lower bridge of a field-effect transistor to be on or off; and an electric current processing module configured to perform detection on an electric current during forward or reverse rotation of the entire electric tool and to feed a signal back to the control center module, such that the control center module sends a signal to turn on or turn off the electric tool. The control system adds control functions for a reverse rotation electric current and time monitoring to monitor a use condition during reverse rotation for screw removal, thus realizing intelligent and fast screw removal.
An alternating current (AC) and direct current (DC) mixed air compressor controller. A control circuit in the controller successively comprises: an input circuit switching a power supply mode between direct current (DC) power supply and alternating current (AC) power supply via a changeover switch; a rectification circuit comprising a rectification bridge composed of four diodes and a capacitor connected in parallel with the rectification bridge; and a control circuit comprising a control centre and a power switch, wherein the control centre detects a capacitor voltage and sends a pulse width modulation (PWM) signal to control a duty ratio, and then provides operation power for an electrical motor via the power switch. By means of the controller, alternating current (AC) and direct current (DC) input power sources can be switched as desired, and the circuit is easy to implement.
H02J 9/00 - Circuits pour alimentation de puissance de secours ou de réserve, p. ex. pour éclairage de secours
H02P 4/00 - Dispositions spécialement adaptées à la régulation ou la commande de la vitesse ou du couple de moteurs électriques qui peuvent être connectés à au moins deux alimentations électriques différentes
44.
CONTROL BOARD MONITORING SYSTEM FOR GRASS CUTTER, AND MONITORING METHOD FOR CONTROL BOARD MONITORING SYSTEM
A control board monitoring system for a grass cutter, and a monitoring method for the control board monitoring system. The control board monitoring system comprises a power source and power supply module, a power source processing module, a microprocessor control module, an angle monitoring module, a current processing module, a motor driving module, a watchdog module, and a relay module. During a grass cutting process, a grass cutter brakes after detecting an abnormality in the state of an electronic component on a main board or that the microprocessor module has failed. Therefore, the present invention has advantages such as high grass cutting efficiency and good safety.
An angle monitoring system for a grass cutter, and a monitoring method for the angle monitoring system. The monitoring system comprises a power source module, a power source processing module, a microprocessor control module, an angle monitoring module, a current processing module, and a motor driving module. The system implements an angle monitoring function via the mutual cooperation and orderly operation of the various modules. Specifically, when the angle of inclination between a chassis of a grass cutter and a horizontal surface exceeds a certain range, the grass cutter automatically stops a grass cutting action, and rapidly brakes and shuts down. Therefore, the present invention has advantages such as high efficiency and good safety.
An angle monitoring system for a grass cutter, and a monitoring method for the angle monitoring system. The system comprises a power source module, a power source processing module, a microprocessor control module, an angle monitoring module, a current processing module, and a motor driving module. An angle monitoring function is implemented via the mutual cooperation and orderly operation of the various modules. Specifically, when the angle of inclination between a chassis of a grass cutter and a horizontal surface exceeds a certain range, the grass cutter automatically stops a grass cutting action, and rapidly brakes and shuts down. Therefore, the present invention has advantages such as high efficiency and good safety.
G01B 21/22 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer des angles ou des conicitésDispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour tester l'alignement des axes
A01D 75/20 - Dispositifs de protection des hommes ou des animaux
A01D 69/02 - Mécanismes d'entraînement ou éléments de ceux-ci pour moissonneuses ou faucheuses électriques
A01D 34/00 - FaucheusesAppareils de fauchage des moissonneuses
47.
PREPOSED STRUCTURE OF MOTOR FOR AXIAL FLOW AIR BLOWER
A preposed structure of a motor for an axial flow air blower, comprising a flow collecting cover (1) and an air outlet pipe (6), the air outlet pipe connected to one end of the flow collecting cover; and a motor (2), a fan blade (3) and a rear flow guide cone (5) are arranged in the flow collecting cover and the air outlet pipe in sequence along an air outlet direction, the motor is an AC motor and is fixed into the flow collecting cover, the fan blade is arranged at an output end of the motor, and the flow collecting cover between the output end of the motor and an inlet end of the fan blade is of a necking-in structure (7). Through preposing a conventional AC motor, the problem of heat dissipation of the AC motor is effectively solved; through a structure of the flow collecting cover, air inlet smoothness is ensured, and the efficiency of an air duct of the air blower is increased; and by applying the AC motor to a handheld type axial flow air blower, the cost is reduced, the working time is prolonged, and an air blower with higher power can be manufactured.
An insulation device for a handheld direct-current gardening tool comprises a tube clip (1), a coupling head insert (4), a coupling head (5), an output shaft (6), a gearbox (8), and a motor (9). The coupling head (5) is disposed between the coupling head insert (4) and the output shaft (6). The coupling head (5) is sleeved at the upper part of the output shaft (6). The tube clip (1) is disposed at a side ring of the coupling head insert (4). The lower part of the output shaft (6) is connected to the gearbox (8). The motor (9) is disposed at the bottom of the gearbox (8). The motor using the reinforced insulation structure has the advantage of structure space, and the insulation device can be used as a power source of a high-voltage direct-current electric tool.
Disclosed is a method for smoothly starting a Hall-less motor, comprising the operation steps of: applying a voltage to two phases of a three-phase motor, and determining a positioning duty and a positioning time, so as to make a duty ratio gradually increase from zero, thereby preventing shaking during positioning; making a drag duty ratio be equal to a positioning duty ratio using a fixed duty ratio, setting a start phase-changing time and a phase-changing time when drag is finished, and changing a phase after a timer is interrupted; and generating, by a three-phase signal generated by the three-phase motor, a logic signal, and at the same time transmitting same to a central processing unit in an external interrupt manner. In this manner, by means of the method for smoothly starting a Hall-less motor provided in the present invention, a hardware circuit structure with low costs is adopted, the starting algorithm is optimized, the product design is simplified, and algorithm optimization is conducted in each link of the three steps of starting, thereby having the advantages of a smooth starting process, short starting time, almost zero starting failure rate, etc.
H02P 1/26 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer individuellement un moteur à induction polyphasé
50.
FAST CHARGING METHOD FOR LITHIUM BATTERY OF DIRECT-CURRENT BRUSHLESS MOTOR DRIVE SYSTEM
A fast charging method for a lithium battery of a direct-current brushless motor drive system. The method comprises the steps of: (1) a constant-power charging stage; and (2) a linear charging stage. In this manner, the fast charging method for a lithium battery of a direct-current brushless motor drive system has the advantages of accelerating the charging process, and reducing battery overheating in the charging process, thereby realizing charging within a shorter time and then achieving the effect of shortening the waiting time of a device during battery charging, etc., and thereby having a wide market prospect for the popularization of the fast charging method for a lithium battery for a direct-current brushless motor drive system.
A pruner speed regulation control method, containing: a startup step of establishing a power supply system, and sending a trigger signal; an operation step of detecting, by a central processing unit, the voltage of the power supply system, judging whether to maintain the operation of the power supply system so as to send an output maintaining signal, pushing a button of a speed regulation trigger, converting, by the central processing unit, a speed regulation signal sent by the speed regulation trigger into an electrical signal by means of a wire for performing speed judgement, and sending a drive signal after detecting a position signal of an electrical motor to control the rotation of the electrical motor; and a speed regulation step of converting, by a sampling resistor, current into a voltage signal and inputting same into the central processing unit for controlling the electrical motor to rotate according to a certain proportion or rotate with the maximum power. By means of the above method, in the provided pruner speed regulation control method, in the case of zero load, an energy-saving mode is entered for lower output power, and in the case of full load, a constant power mode is entered to maintain the operating current of a pruner with the maximum power unchanged, so that the pruner is easily protected and smooth in operation, and the problems of power consumption in a zero load state and the pruner being easily protected can be well solved.
An inversely positionable mower structure comprises a machine housing (2), a wheel assembly, a rear shroud panel (5), a front shroud panel (1) and height adjusting supports. The rear shroud panel (5) is fixed in the machine housing (2). The height adjusting supports include a left height adjusting support (4) provided on the left side of the machine housing (2) and a right height adjusting support (3) provided on the right side of the machine housing (2). The wheel assembly is mounted on the outer side of the machine housing (2). The wheel assembly comprises front wheels (8), rear wheels (9) and wheel axles (7). One wheel axle (7) is provided between the front wheels (8) and the other wheel axle (7) is provided between the rear wheels (9). The inversely positionable mower structure is simple in structure and easy to place; the storage space can be reduced, and a push rod is convenient to fold.
Disclosed are a constant power and double speed control system and control method based on a direct-current brushless electric tool. The control system comprises a two-gear rotation speed switching module, a constant power and double speed control module, a motor output power control module and an electrical inductance device. The electrical inductance device collects supply voltage, work current and motor speed information of a motor in running. The two-gear rotation speed switching module provides different rotation speed options. The constant power and double speed control module reads and judges information sent by the two-gear rotation speed switching module and the electrical inductance device. The motor output power control module regulates the output power of the motor according to the judged information of the constant power and double speed control module. In this way, the constant power and double speed control system and control method based on the direct-current brushless electric tool of the present invention can well adapt to a load, save energy, and effectively ensure that the output power of a matched battery system is in a normal range so as to achieve protection for the battery system.
A switch control circuit of a snowplow controller and a control method thereof comprise a battery pack (1) electrically connected with a switch (2). The switch (2) is electrically connected with a relay (5) and a power supply (3) respectively. The relay (5) is electrically connected with a motor driving part (6), and the motor driving part (6) is also electrically connected with the power supply (3) and a motor (7). a. A starting step: the switch (2) is turned on, the battery pack (1) supplies power to the power supply (3) and the relay (5), the power supply (3) and the relay (5) are simultaneously electrified and the normally-open contact of the relay (5) is turned on, so that the motor (7) is driven to be electrified and starts to work; b. A stop step: the switch (2) is turned off, the power supplied to the relay (5) and the power supply (3) is simultaneously lost and the normally-open contact of the relay (5) is turned on, so that the motor (7) is driven to be powered off and thus stops working. The switch control circuit of the snowplow controller and the control method therefor can reduce the operation steps, the cost and power consumption, thereby being simple and convenient, safe and reliable.
G05D 1/00 - Commande de la position, du cap, de l'altitude ou de l'attitude des véhicules terrestres, aquatiques, aériens ou spatiaux, p. ex. utilisant des pilotes automatiques
Disclosed is a double insulated motor and pinion device, comprising: a motor (7), a motor fixing seat (6), a pinion (1), a pinion shaft sleeve (2) and a double insulated sleeve (3), wherein the motor (7) is connected to the motor fixing seat (6) to form a motor component and is mounted below the pinion (1), the double insulated sleeve (3) is connected below the pinion shaft sleeve (2), the pinion (1), the pinion shaft sleeve (2) and the double insulated sleeve (3) are mounted together to form a pinion component, and the pinion component is mounted on the motor component. By adding two insulated parts, the requirements for basic insulation and reinforced insulation of a high-voltage direct-current series of products are met, and at the same time the space is reduced and the costs are lowered.
A novel integrated single-body power source apparatus for pruning machines comprises: a motor (1), a motor coupler (2), a control board (3), a battery pack (4), and a housing (5). The motor (1) is connected to the motor coupler (2) to form a motor assembly. The control board (3) is connected to the motor (1) and the battery pack (4) and controls on/off of the motor (1) and the battery pack (4). The motor (1), the motor coupler (2), the control board (3), and the battery pack (4) are all disposed inside the housing (5). In this way, the novel integrated single-body power source apparatus for pruning machines has the advantages of optimized design, novel structure, stable performance, being easily removed, being flexibly combined, low cost and high efficiency.
Disclosed is an axial flow blower fan blade, comprising a blade portion and a guide blade portion provided at the back of the blade portion, wherein the guide blade portion comprises five guide blades (1); the blade portion comprises a wheel hub (2) and a plurality of blades (3) provided on the wheel hub (2), the blades (3) and the wheel hub (2) are integrated, the number of the blades (3) is twelve, and the diameter of the outer annulus constituted by outer edges of the twelve blades (3) is 84 millimetres. The fan blade structure of the axial flow blower is simple and reasonable, the blades (3) and the wheel hub (2) are integrated, which is beneficial to improve the concentricity and intensity of the blades (3), improve air quantity and reduce the noise, and a reasonable number of blades (3) and the diameter of the blades (3) cooperating with a reasonable number of the guide blades (1) is able to improve the fan blade efficiency and the air speed.
A mowing machine comprises a power head and a cutting head (9). The power head comprises a power driving device (4), an upper tube (2), and a control handle (1). The power driving device (4) is connected to the control handle (1) by the upper tube (2). The power driving device comprises a driving motor (7) and a gearbox (8) that are disposed in a casing (6). The power driving device has one end connected to the upper tube (2) and the other end detachably connected to a lower rod (5). The lower rod (5) is connected with a cutting head (9). In the mowing machine, the cutting head is directly connected to the gear shaft rather than the internal transmission shaft, and the main handle is connected by using a tube, so that flexible shaft transmission is avoided, thereby providing a good overall balance. The mowing machine provides good user experience, features a low cost, reduced shaft loss and improved working efficiency, and can effectively solve the problems of large noise and violent vibration at the connection of the upper and lower rods.
Disclosed is a gardening tool portable power source, comprising a brace structure and a power source device, wherein the brace structure comprises a belt (1) and a brace (2) provided on the belt, the power source device is provided at one side of the belt, the power device comprises a power source (3), a cloth housing (4) and an artificial power source (5), and the power source is provided in the cloth housing. Accordingly, the real power source is separated from the machine, a larger part of the machine weight is transferred and is placed on a human waist and fixed, using other parts of human body to bear weight, reducing the requirement for arm strength, facilitating machine operation, greatly extending labouring time of a person and making the work easy.
Disclosed is a handheld gardening tool, comprising a casing power device (1), a handle control device (2), an upper pipe (3), a lower rod (4), a connection sleeve (5), and a work head (6), wherein the casing power device (1) is mounted to an upper end part of the upper pipe (3), the lower rod (4) is connected to the upper pipe (3), the work head (6) is mounted to a lower end part of the lower rod (4), the casing power device (1) comprises a right casing (11) and a left casing (12), the handle control device (2) comprises a right handle (21) and a left handle (22), and the right handle (21) and the left handle (22) on the handle control device (2) are respectively equipped to the right casing (11) and the left casing (12) of the casing power device (1) via screws (7). The handheld gardening tool uses a handle control device and a casing power device, which have a partitionable structure, such that the handle control device can be replaced quickly, saving the development period and the development cost of the series of products.
An electrical system with replaceable batteries comprises an electrical system and a combined switch. The electrical system comprises a plurality of battery packs (1, 2, 3); all the battery packs are independently arranged each other; and an electric-quantity display device which is used for displaying the electric- quantity information indicating signals of the battery packs and a gear switch which is used for mutually switching the battery packs are arranged on the combined switch. Each battery pack comprises a battery (A1, A2, A3), a power switches (B1, B2, B3) and a battery management system (C1, C2, C3). The battery management systems receive and combine the output signals of the combined switches with the electric-quantity information indicating signals, thereby controlling whether the power switches are closed to provide power output or not. According to the electrical system with replaceable batteries, the electrical system is constructed by using a plurality of independent small batteries to replace a single large battery; and the total capacity of the batteries is changed by increasing or decreasing the number of the installed independent small batteries so that the most economical endurance time can be matched with the equipment weight.
A normally opened high-voltage battery pack charger comprises a charger shell (1), a switch (2), a switch button (4) for turning on or off the switch, and a metal plug-in connector (3) for charging. The switch is arranged inside the charger shell. The metal plug-in connector and the switch button are arranged on the outer surface of the charger shell. Moreover, the charging method of the charger includes the steps that: a battery pack (8) is placed into the charger and made to move towards the metal plug-in connector on the charger; when the battery pack is in physical connection with the metal plug-in connector on the charger, the battery pack applies pressure on the switch button, and the switch button drives the switch to be turned off; after the switch is turned off, the charger is electrically connected with the battery pack and charges the battery pack. By means of the normally opened high-voltage battery pack charger and the charging method thereof, the risk that a user is shocked by high-voltage electric power is effectively lowered, the requirement for product safety of industrial organizations is satisfied, and the normally opened high-voltage battery pack charger is simple in structure, convenient to operate and high in practicability.
A brushless motor (1) comprises: a stator (20), a rotor (21), a plurality of field effect transistors (4), a commutation circuit board (5), a control circuit board (6), and motor covers (2, 3). The motor covers (2, 3) comprise a front cover (2) and a rear cover (3), and the motor front cover (2) and the motor rear cover (3) are fixedly connected to each other to form an integral motor. The plurality of field effect transistors (4) is directly fixed on the motor front cover (2). The commutation circuit board (5) and the control circuit board (6) are both connected on the motor front cover (2). The field effect transistor (4) of the brushless motor is directly installed on a housing of the motor, so as to ensure desirable heat dissipation, thereby saving heat dissipation blocks and saving cost; also, the integral brushless motor runs more smoothly, and does not require excessively high precision for a casing as does a separated-type brushless motor, thereby lowering a reject ratio of the product in mass production.
H02K 29/00 - Moteurs ou génératrices à dispositifs de commutation non mécaniques, p. ex. tubes à décharge ou dispositifs à semi-conducteurs
H02K 11/00 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection
H02K 9/02 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine
A brushless chainsaw comprises a shell (4), a brushless motor (12), a transmission box apparatus (5), a power supply (8), and an electronic converter (2), a brake guard (3), a chain board (27), and a chain (6). The brushless motor (12), the transmission box apparatus (5), and the electronic converter (2) are disposed inside the shell (4). The brushless motor (12) is connected to the electronic converter (2). The power output end of the brushless motor (12) is connected to the transmission box apparatus (5). The electronic converter (2) detects a position signal of the brushless motor (12). The control brushless motor (12) drives the chain (6) and the chain board (27) to rotate. The electronic converter (2) receives a brake signal of the brake guard (3) and transfers the brake signal to the brushless motor (12). The brushless motor (12) drives the chain (6) to brake according to the brake signal. By means of the foregoing manner, the brushless chainsaw implements fast stop of a motor by utilizing a manner of energy consumption of a coil of the motor; also, by means of advantages such as high efficiency and a long service life of the brushless motor, and by installing a reduction apparatus to increase an output torque, the volume is small, cost is low, a torque is large, a braking current is low, and the overall performance is optimized.
A two-blade mowing device, comprising a housing (1). Provided inside of the housing (1) are at least a first motor (2) and a second motor (3). Provided on the output shaft of the first motor (2) is a first blade (5). Provided on the output shaft of the second motor (3) is a second blade (6). The first blade (5) and the second blade (6) are arranged staggeredly in the front and the rear inside of the housing (1). The vertical projections of the first blade (5) and of the second blade (6) along the direction of the mower movement at least partially overlap, and the first motor (2) and the second motor (3) operate in opposite directions. The two-blade mowing device substantially decreases the mowing current, lowers power consumption, extends the single use time of the direct current battery pack, and provides longer mowing time and larger mowing area using the same battery capacity.
A01D 34/685 - FaucheusesAppareils de fauchage des moissonneuses caractérisés par des particularités relatives au type d'appareil de coupe comportant des couteaux rotatifs comportant des couteaux tournant autour d'un axe vertical dirigés à la main par un opérateur à pied à couteaux ou à roues entraînés par un moteur à plusieurs couteaux
brevets
