Koki Holdings Co., Ltd.

The present invention provides a working machine with a good lighting device. In a grinder, the lighting device is provided on both left and right sides of rear end of a gear housing and above wheel guard. Specifically, a holder of the lighting device is visibly exposed from an outer periphery of the gear housing in front view. When an LED of the lighting device emits light by an operator's operation of an operating portion, emitted light illuminates a lower portion of a spindle (i.e., a grinding wheel). In other words, a housing does not block the light emitted toward the grinding wheel from the lighting device on both sides of the housing, and the light can illuminate the grinding wheel disposed around the lower portion of the spindle. Therefore, the lower portion of the spindle (i.e., the grinding wheel) can be well illuminated.

A dust collection device 40 comprises: an intake pipe 53 connected to a suction unit 52 ; a cyclone unit 60 that swirls air flowing out from the intake pipe 53 and centrifuges dust; and a filter unit 70 that accommodates a filter 72 . The filter unit 70 has an outlet 74 connected to the cyclone unit 60 and discharging the air having passed through the filter 72 . Therefore, the air and dust near a tip tool T can be separated by the cyclone unit 60 . Furthermore, even when the dust remains, the remaining dust can be removed by the filter 72 . Furthermore, the intake pipe 53 and the cyclone unit 60 are arranged at positions where the intake pipe 53 and the cyclone unit 60 overlap in a front-rear direction, and the filter unit 70 is disposed behind the cyclone unit 60.

An electric working machine with the same or more prevention or suppression of the transmission of the vibration than that of a related art because of having the less components and the less man-hours for assemblies than those of the related art is achieved. A hammer drill includes a motor serving as a driving source and is equipped with a drill bit driven by a driving force that is output from the motor. The hammer drill includes a main-body housing and a handle housing forming at least a part of an outer shell, and the main-body housing and the handle housing are connected to each other through an elastic body to be relatively movable. The elastic body is formed on the main-body housing and the handle housing by a double-layer molding, and is a part of a continuous resin cover covering surfaces of the main-body housing and the handle housing.

A battery pack includes: a first case having a slot portion exposing a battery-side terminal portion and a guide portion guiding attachment to an electrical device main body; a second case defining a space accommodating a battery cell by being joined with the first case; a separator holding the battery cell; a circuit board fixed to a side of the separator facing the first case; and the battery-side terminal portion is fixed at a position corresponding to the slot portion of the circuit board and connectable to a main body side terminal of an electrical device main body. The separator has a connecting portion provided around the circuit board when viewed from above, at a position facing the first case, and the first case has a connected portion connected to the connecting portion at a portion corresponding to the connecting portion.

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.

Provided is a working machine capable of improving workability. A working machine includes an electric motor, a gearbox, a wind-up wheel, a plunger, a spring, a trigger, and a housing, and in a first direction, an end portion of the gearbox on one side is located on the other side with respect to an end portion of the trigger on the other side. As a result, since the center of gravity G of the working machine and the trigger can be brought close to each other, the workability can be improved.

A driving tool includes: a striking unit striking a fastener by being actuated in a first direction; a rack on the striking unit; a wheel; and a second transmission portion on the wheel and capable of being engaged with and released from the rack. The striking unit can be actuated in a second direction when the second transmission portion is engaged with the rack, and the striking unit can be actuated in the first direction when the second transmission portion is released from the rack. The second transmission portion includes: a tooth portion arranged along a rotation direction of the wheel and turned in a predetermined direction to be engaged with and released from the rack; and a movable piece actuated in the predetermined direction to be engaged with the rack and actuated in a different direction from the predetermined direction to be released from the rack.

Workability of a working machine is enhanced. A bush cutter includes a motor, a control unit, a fan, a housing, and a front cover. A microcomputer for controlling driving of the motor is mounted on the control unit. The fan generates airflow when receiving a driving force of the motor. The housing houses the motor, the control unit, and the fan, and includes an opening. The control unit has a plate shape with an outer shape size maximized when being viewed in a front-back direction, and is arranged between the opening and the fan in the front-back direction. The front cover is erected from an inner wall of the housing to overlap the control unit when being viewed in the front-back direction.

A working machine includes a magazine that houses a plurality of fasteners inside, an ejection unit to which the fastener is supplied, and a driver blade that moves to a lower side in an up-down direction to strike the fastener supplied to the ejection unit. The working machine further includes a biasing unit that biases the driver blade to the lower side, a conversion mechanism that winds up the driver blade to the upper side in the up-down direction, and an electric motor that generates a driving force for driving the conversion mechanism. The magazine is provided at a position overlapping with the electric motor as viewed in a direction of a rotation axis of the electric motor.

A blower with assembly performance that is improved by downsizing of a housing resulted from unitization of a blower fan and a motor is provided. In a blower including a housing configured to house the motor and the blower fan therein and to include an air intake port sucking the air flow thereinto and a tubular air exhaust port configured to exhaust out the air flow toward a front side direction, the motor and the blower fan as an assembly embedded into a motor case are housed in a main body section of a housing. A brushless DC motor is adopted as the motor, and a motor circuit board is mounted on a front side of the motor. A semiconductor switch element is mounted on the motor circuit board, and the motor is driven at 40,000 revolutions/second or more.