Abstract: Provided is a working machine in which a counterweight is appropriately supported, thereby avoiding deterioration of workability. The working machine includes: a motor; a plunger reciprocated in a front-back direction by a drive of the motor; a crankshaft rotated around an axis extending in an up-down direction by the drive of the motor; a counterweight driven in a front-back direction by rotation of the crankshaft so as to cancel out vibration due to the reciprocation of the plunger; a transmission mechanism (gear, crankshaft, and connector) converting a rotation driving force of the motor into a driving force for the plunger and counterweight and transmitting the driving force to the plunger and counterweight; and a gear case (transmission mechanism accommodation portion and lid portion) accommodating the transmission mechanism and elastically supporting the counterweight in the right-left direction.

Abstract: A work machine includes: a motor; a plunger that is reciprocated in the front-back direction by the drive of the motor; a transmission mechanism that converts a rotational driving force of the motor into a reciprocating driving force and transmits the reciprocating driving force to the plunger; a first support that supports the plunger to be capable of reciprocating and is disposed on one side of the plunger in an orthogonal direction orthogonal to the front-back direction; a second support that supports the plunger to be capable of reciprocating and is disposed on the other side of the plunger; and a support member that supports at least one of the first support and the second support such that the distance between the first support and the second support in the orthogonal direction can be changed.

Abstract: A work machine includes: a motor; a drive mechanism, connected to the motor and operating a tip tool; and a case, accommodating the drive mechanism. The drive mechanism includes: a first drive member, rotationally driven about an axis by the motor; a second drive member, reciprocally driven by the motor; and a support member, fixed to the case, restricting movement of the first drive member in a direction of the axis, and supporting the second drive member so that the second drive member is reciprocally drivable.

Abstract: Provided is a working machine in which a counterweight is appropriately supported, thereby avoiding deterioration of workability. The working machine includes: a motor; a plunger reciprocated in a front-back direction by a drive of the motor; a crankshaft rotated around an axis extending in an up-down direction by the drive of the motor; a counterweight driven in a front-back direction by rotation of the crankshaft so as to cancel out vibration due to the reciprocation of the plunger; a transmission mechanism (gear, crankshaft, and connector) converting a rotation driving force of the motor into a driving force for the plunger and counterweight and transmitting the driving force to the plunger and counterweight; and a gear case (transmission mechanism accommodation portion and lid portion) accommodating the transmission mechanism and elastically supporting the counterweight in the right-left direction.