Abstract: A reciprocating power tool includes a housing; a power assembly including an electric motor; a transmission assembly connected to the power assembly; a reciprocating assembly connected to the transmission assembly, performing a reciprocating motion, and mountable with a working accessory for an operation; and a balancing component for balancing a motion of the reciprocating assembly. A maximum distance the centroid of the reciprocating assembly moves is a first distance L1; a maximum distance the centroid of the balancing component moves is a second distance L2; the mass of the reciprocating assembly is a first mass M1, and the mass of the balancing component is a second mass M2; the ratio of a product M2·L2 of the second mass M2 and the second distance L2 to a product M1·L1 of the first mass M1 and the first distance L1 is greater than 1.05.

Abstract: A handheld power tool includes a motor, a handle having a first switch for starting and stopping the motor, an output assembly, and an adjustment device including a telescopic rod assembly. The length of the adjustment device changes so that the handheld power tool has at least first and second working states. The distance between the frontmost side of the handheld power tool and the rearmost side of the first switch is an effective length of the handheld power tool. When the handheld power tool is in the first working state, the handheld power tool has a first effective length T1. When the handheld power tool is in the second working state, the handheld power tool has a second effective length T2. The first effective length T1 is less than or equal to 1 m, and the second effective length T2 is greater than the first effective length T1.

Abstract: A chainsaw includes a chain, a liquid pump assembly, a motor, and a controller. The chain is used for implementing a cutting operation. The liquid pump assembly includes a liquid pump and a motor. The liquid pump is used for releasing a liquid for lubricating or cooling the chain. The motor is used for at least driving the liquid pump to operate. The controller is electrically connected to at least the motor. The controller is configured to, when the liquid pump is in the jammed state, control the liquid pump assembly to enter a throttling mode in which a supplied amount of the liquid is reduced, and when the liquid pump exits the jammed state, control the liquid pump assembly to exit the throttling mode. Technical solutions provided by the present application can determine and release the jammed state of the chainsaw.

Abstract: A power tool includes an output assembly, a first motor, a housing, and a liquid pump assembly, where the output assembly implements an operation, the first motor is used for driving the output assembly to operate, the housing is formed with a grip for a user to hold, the liquid pump assembly includes a liquid pump and a second motor for driving the liquid pump to operate, the liquid pump assembly is at least partially disposed within the grip, and a total length of the power tool is greater than or equal to 20 cm and less than or equal to 150 cm.