Makita Corporation

Hiroshi Nojiri

Yoshifumi Morita

Toshikazu Migita

Yuji Yamamoto

Takuya Kusakawa

Yoshitaka Ichikawa

Hirokazu Hagiwara

Tomoyuki Ota

Michisada Yabuguchi

Kouichi Takeda

Masumi Nishimura

Tatsuya Hata

One aspect of the present disclosure provides an electric working machine. The electric working machine includes a driver, a motor, and a control circuit. Attached to the driver is a selected tool. The motor drives the selected tool attached to the driver. The control circuit sets a target rotational frequency based on the selected tool. The control circuit controls the motor to rotate at the target rotational frequency.

Electric working machine and method for controlling motor of electric working machine

A brush cutter includes a frame rod, a front end housing fixedly mounted to a front end of the frame rod, a cutting blade mounted on a support shaft within the front end housing, a rear end housing fixedly mounted to a rear end of the frame rod, an electric motor mounted within the rear end housing for rotation of the cutting blade, and a source of power supply for supplying electric power to the motor. In the brush cutter, a plurality of rechargeable battery packs adapted to use in electric power tools are used as the source of power supply for the motor.

Brush cutter

An electric working machine according to one aspect of the present disclosure comprises a motor, a speed setting unit, a load detection unit, a determination unit, and a parameter setting unit. The determination unit calculates an estimated value of a heat generation amount of the motor, and determines that the motor is in an overload operation state when the estimated value reaches a predetermined threshold. The parameter setting unit sets a parameter to be used for calculating the estimated value and/or the threshold in accordance with a rotation speed set by the speed setting unit.

Electric working machine, and method of detecting overload operation thereof

A motor-powered apparatus according to one aspect of the present disclosure comprises a motor, a drive switch, a reverse switch, and a control unit. The control unit is configured to drive the motor in a reverse direction when a drive command is inputted via the drive switch after a reverse command is inputted via the reverse switch and to drive the motor in a forward direction when the drive command is inputted again via the drive switch.

Motor-powered apparatus and method of controlling the same

A motor is disposed in a main body and has a rotary shaft. A base is disposed below the main body. The base is coupled to the rotary shaft and adapted to make eccentric motions in accordance with rotations of the rotary shaft. A first receptacle is disposed in the main body. A second receptacle is disposed in the base. A foot is disposed between the first receptacle and the second receptacle. The foot includes a foot body made of metal, and elastic members provided on both ends of the foot body and respectively fitted into the first receptacle and the second receptacle, so that the foot body is pivotably supported between the first receptacle and the second receptacle. An elastic sleeve is fitted onto a part of an outer periphery of the foot body while being compressed by the first receptacle and the second receptacle.

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Anjo, Japan

Hiroshi Nojiri