Abstract: A battery pack includes a housing; a cell assembly disposed in the housing and including multiple cell units; and a heat absorber in thermal contact with at least one cell unit to absorb the heat generated by the cell assembly during a charging and discharging process of the battery pack. The heat absorber contains at least paraffin wax, and the mass of the paraffin wax accounts for 70% to 90% of the mass of the heat absorber.

Abstract: A pipecutter includes a housing, a motor, a rotating assembly, and a first drive assembly. The rotating assembly includes a first bracket assembly, a second bracket assembly, and a locking assembly, where the locking assembly is configured to lock or unlock a pipe and the pipecutter. The first drive assembly is driven by the motor to drive the rotating assembly to rotate. The locking assembly includes a rocker arm; when the rocker arm is at a first position, the locking assembly is in an unlocking state; and when the rocker arm is at a second position, the locking assembly is in a locking state. The pipecutter further includes a second drive assembly, the second drive assembly includes a first pushing member which is able to push the rocker arm to move from the first position to the second position.

Abstract: A fastening tool includes a housing, a magazine, a striking assembly, a trigger assembly, and a brake assembly, where the housing is formed with an accommodation space, the magazine accommodates a fastener, and the striking assembly is accommodated in the accommodation space and includes a striker, where the striker is configured to move along a striking direction to output a striking force to the fastener; the trigger assembly is configured to trigger a first switch and includes a first state for not triggering the first switch, and when the first switch is not triggered, the striker does not output the striking force; the brake assembly includes a lock state for preventing the striker from moving along the striking direction; and in response to the trigger assembly switching to the first state, the brake assembly switches to the lock state.

Abstract: A nail gun includes: a housing formed with an accommodating space; a cylinder; a firing assembly capable of moving from an initial position to a firing position; a power output assembly disposed in the accommodating space and used for outputting a driving force; and a drive wheel connected to an output shaft of the power output assembly and used for driving, under the drive of the power output assembly, the firing assembly to move. The drive wheel has a first drive tooth and second drive teeth, the radius of the addendum circle of the first drive tooth is less than the radius of the addendum circle of a second drive tooth, the first drive tooth is a drive tooth disposed at a start end of the drive wheel, and the first drive tooth meshes with the firing assembly when the drive wheel starts driving the firing assembly to reset.

Abstract: A nail gun includes a housing, a power output assembly, a cylinder, and a firing assembly. At least a part of the power output assembly is disposed in the housing. At least a part of the cylinder is disposed in the housing. The firing assembly includes a firing pin provided with a first drive teeth capable of being driven, the first drive teeth includes a locking tooth provided with a rotating shaft, the rotating shaft is provided with a roller wheel, and the roller wheel is rotatable about a rotating axis.

Abstract: A power tool includes an output shaft, an installation apparatus and a retention mechanism. The installation apparatus has an operation state and an installation state. The retention mechanism is capable of providing a retaining force that keeps the installation apparatus in the installation state. The retention mechanism includes a movable piece. The output shaft is formed with a guide rail that guides the movable piece to move. The movable piece is capable of moving along the guide rail to a first retention position and a second retention position. When the installation apparatus is in the installation state and receives a rotation force applied by the operation accessory, the rotation force causes the movable piece to move from the second retention position to the first retention position so that the installation apparatus is switched from the installation state to the operation state.

Abstract: A nail gun includes a housing, a power output assembly, a cylinder, and a firing assembly. At least a part of the power output assembly is disposed in the housing. At least a part of the cylinder is disposed in the housing. The firing assembly includes a firing pin provided with a first drive teeth capable of being driven, the first drive teeth includes a locking tooth provided with a rotating shaft, the rotating shaft is provided with a roller wheel, and the roller wheel is rotatable about a rotating axis.

Abstract: A power tool includes a housing, a prime mover disposed in the housing, a first cylinder formed with a first chamber, a first rotating member rotatable with respect to the first cylinder about a first axis under the driving of the prime mover, a first piston movable in a direction parallel to the first axis when the first rotating member rotates relative to the first cylinder. The first cylinder and the first rotating member are disposed within the housing. The first piston is disposed within the first chamber The first rotating member is formed with a first transmission structure to drive the first piston The first piston is formed with a second transmission structure capable of cooperating with the first transmission structure to rotate the first rotation member to drive the first piston.

Abstract: A power tool includes a housing, a prime mover disposed in the housing, a first cylinder formed with a first chamber, a first rotating member rotatable with respect to the first cylinder about a first axis under the driving of the prime mover, a first piston movable in a direction parallel to the first axis when the first rotating member rotates relative to the first cylinder. The first cylinder and the first rotating member are disposed within the housing. The first piston is disposed within the first chamber The first rotating member is formed with a first transmission structure to drive the first piston The first piston is formed with a second transmission structure capable of cooperating with the first transmission structure to rotate the first rotation member to drive the first piston.

Abstract: A power tool for impacting fasteners includes a housing, a striking pin for impacting fasteners, a driving device for driving the striking pin to perform an action of impacting fasteners, a first driving source for providing power to the driving device, a locking element for locking the striking pin, and a second driving source for driving the locking element to lock and/or release the striking pin, which is independent of the first driving source.