A handheld blower includes a fan for generating an air flow, a motor for driving the fan to rotate about a central axis, a battery pack for supplying power to the motor, an air duct portion including an air duct, the air duct extending long the central axis, a coupling portion for coupling with the battery pack, and a connection portion for connecting the air duct portion with the coupling portion. The fan is received in the air duct. The air duct includes an air duct inlet and an air duct outlet which are respectively located at the two ends of the air duct. The air duct inlet is located between the air duct outlet and the coupling portion. The connection portion is provided with an air intake space located between the air duct inlet and the coupling portion. The air intake space is opened in a radial direction of the central axis.
Embodiments of the disclosure are directed to a back-mounted power tool system. The power tool system includes a battery package that can be used on other power tool systems, a backpack apparatus, a power tool, and a connecting member. The backpack apparatus includes a backpack harness to mount the backpack apparatus onto a user's body and a first connector to removably couple the battery package to the backpack apparatus. The power tool includes a motor driven by a power supply from the battery package. The connecting member transfers a weight of the power tool and/or a force received from the power tool to the backpack apparatus by rotatably coupling the power tool to the backpack apparatus. The connecting member further enables the power tool to rotate about a first rotation axis or a second rotation axis, the first rotation axis being perpendicular to the second rotation axis.
B25F 5/02 - Construction of casings, bodies or handles
E01H 1/08 - Pneumatically dislodging or taking-up undesirable matterDrying by heat only, or by streams of gasCleaning by projecting abrasive particles
A47L 5/14 - Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum cleaning by blowing-off, also combined with suction cleaning
A power tool includes an output shaft for outputting torque, a transmission mechanism for driving the output shaft, a motor for driving the transmission mechanism, and a housing for containing the motor. The transmission mechanism includes a ring gear being capable of rotating relative to the housing, locking pins for limiting the rotation of the ring gear, a locking ring for limiting the locking pins to rotate with the ring gear, and biasing elements for biasing the locking pins so as to move toward the locking ring. The ring gear is formed with apertures going through the ring gear in an axial direction of the output shaft and the locking pins pass through the ring gear through the apertures and contact with the locking ring. The locking ring is formed with locking protuberances for contacting and engaging with the locking pins.
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
F16H 3/54 - Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
7.
Cordless tool system with a battery pack having a heat absorbing device
A tool discharges one battery pack and a charger simultaneously charges another battery pack to provide for continuous and circular operation of the tool. Tool system includes a tool and a lithium based battery pack having a nominal voltage of at least 56 volts for supplying power to the tool. A heat absorbing device is associated with the battery pack and includes a phase-change material.
G01K 13/00 - Thermometers specially adapted for specific purposes
G01K 7/01 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using semiconducting elements having PN junctions
A chainsaw includes a housing, a prime mover, a transmitting member and a bias assembly. The prime mover is mounted to the housing. The saw chain is driven by the prime mover. The guide bar guides the saw chain and the guide bar is slidably connected to the housing. The driving member drives the guide bar to slide relative to the housing. The operating member swings forth and back relative to the housing. The transmitting member enables the driving member to rotate synchronously with the operating member when the operating member is swung forth and enables the operating member to rotate relative to the driving member when the operating member is swung back. The bias assembly biases the transmitting member to engage with the operating member when the operating member is swung forth.
Embodiments of the disclosure are directed to a back-mounted power tool system. The power tool system includes a battery package that can be used on other power tool systems, a backpack apparatus, a power tool, and a connecting member. The backpack apparatus includes a backpack harness to mount the backpack apparatus onto a user's body and a first connector to removably couple the battery package to the backpack apparatus. The power tool includes a motor driven by a power supply from the battery package. The connecting member transfers a weight of the power tool and/or a force received from the power tool to the backpack apparatus by rotatably coupling the power tool to the backpack apparatus. The connecting member further enables the power tool to rotate about a first rotation axis or a second rotation axis, the first rotation axis being perpendicular to the second rotation axis.
A47L 5/14 - Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum cleaning by blowing-off, also combined with suction cleaning
An example method for controlling an electric motor in an electric tool includes detecting travel of the trigger, selecting a smoothing coefficient N according to travel of the trigger in a predetermined time, driving the electric motor with an output duty ratio which is figured out by a formula in which the smoothing coefficient N is a denominator so as to cause the output duty ratio to be lesser than a preset duty ratio. The methods described will decrease the current impact on electric motors when users pull the trigger.
A multi-mode drill includes a housing, a motor and a transmission mechanism, wherein the motor and the transmission mechanism are received in the housing. The transmission mechanism has a gear reduction component and a main shaft, wherein the gear reduction component is driven by the motor, and the main shaft is connected with the gear reduction component and driven by the gear reduction component to rotate. The multi-mode drill further includes a mode switching mechanism for causing the transmission mechanism to operate in different modes. The mode switching mechanism includes an operation member and an actuator. The actuator is actuated by the operation member and engages with the transmission mechanism. At least an elastic energy storage member is arranged between the operation member and the actuator.
A cutting worktable includes a worktable body have a distal side located away from a cutting tool and a proximal side located adjacent to the cutting tool. The cutting worktable further includes a support frame assembly disposed at the proximal side of the worktable body and used to lift an object to be cut so that the object to be cut is placed on a top surface of the worktable body in an inclined posture. The support frame assembly includes a support roller for contacting the object to be cut and the worktable body is provided with a limiting structure for abutting against the object to be cut and limiting its position. The object to be cut can thus be inclined via the support frame assembly and fixed by the limiting structure. The limiting structure can be in the form of a plurality of placement grooves to achieve placement of the object to be cut at different angles relative to the cutting tool and worktable.
B28D 1/04 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by sawing with circular saw blades or saw discs
B28D 7/04 - Accessories specially adapted for use with machines or devices of the other groups of this subclass for supporting or holding work
16.
Battery pack cooling and charging device and method
A battery pack cooling and charging device includes a charging module for a battery pack, a cooling fan, a power source module and a cooling fan control module. The cooling fan control module is capable of controlling the cooling fan for cooling and is connected with the cooling fan. During the charging operation, a rotational speed of the cooling fan for cooling the battery pack and a charging module is changed by detecting parameters such as fan operation time, a battery pack internal resistance, a charging module temperature, and a battery pack voltage. The rotational speed of the cooling fan is reasonably adjusted, thus noise of the cooling fan is reduced and energy consumption is reduced according to different phases of the charging process by regarding one parameter or combinations of parameters as conditions for changing the rotational speed of the fan.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 10/6563 - Gases with forced flow, e.g. by blowers
A chain saw includes a housing, an oil supply system disposed in the housing, a trigger linkage assembly, and a switch controlled by the trigger linkage assembly. The oil supply system includes an oil can and an oil pump assembly connected with the oil can via an oil inlet tube. The trigger linkage assembly includes a switch trigger. The chain saw further includes a pressing member driven by the trigger linkage assembly. When the switch trigger is not activated, the pressing member is located at a first position and can press the oil inlet tube tightly to isolate an oil circuit of the oil supply system. When the switch trigger is pressed down, the pressing member can be driven by the trigger linkage assembly to a second position to release the pressing for the oil inlet tube so that the oil circuit of the oil supply system is allowed to flow.
A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation.
The present invention provides an electrical tool with battery pack ejection assist mechanism. The electrical tool includes a housing receiving a motor and a transmission mechanism, a tool accessory driven by the motor for the operation, a battery pack slidably mounted to the housing for providing power and a locking mechanism for locking the battery pack after being mounted. The electrical tool further includes an ejecting assembly for assisting in the ejection of the battery pack when the locking mechanism unlocks the battery pack, the ejecting assembly includes a contacting member for contacting and ejecting the battery pack and a driving member for driving the contacting member for ejecting the battery pack. The contacting member is movably connected to the housing, and the driving member is arranged in the housing and contacts the contacting member.
H01R 13/635 - Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure for disengagement only by mechanical pressure, e.g. spring force
B25F 5/00 - Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
H01M 2/10 - Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
A power tool has a driving shaft for driving a working element and a clamping device for clamping the working element. The clamping device has a clamping position in which the working element may be fixed relative to the driving shaft and a release position in which the working element can be removed from the driving shaft. An operating member is coupled to the clamping device for moving the clamping device between positions. The clamping device also has a rotating position in which the working element can be rotated by an angle relative to the driving shaft and the operating member has an operating position that corresponds to the rotating position.
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