Makita Corporation

Yusuke Hirata

Tatsuya Nagahama

Kenji Abe

Shingo Kamiya

Akifumi Tomita

In an electric power tool, a stator of a motor is housed in a grip and the stator is located coaxial to the grip. An electric wire for the motor is passed through a ferrite core. Further, the ferrite core is located inside an outer peripheral surface of the stator in a radial direction.

Electric power tool

A power tool, for example, a portable circular saw, includes a fan, a motor configured to rotate the fan, an output part or shaft driven by the motor, a motor housing that houses the motor, a grip housing connected to the motor housing, a trigger associated with the grip housing, and a brake member configured to brake a rotation of the motor, the brake member being mounted inside the grip housing. The brake member may be a resistive element of a rheostatic braking system. The housing and fan are configured such that cooling air is directed to cool the brake member.

Power tool, such as a portable circular saw, having improved braking and cooling

An electric power tool has an electric motor disposed in a main body and a power supply circuit electrically connected to the electric motor by wires to supply electric power to the electric motor. A switch is disposed in the power supply circuit so as to electrically open and close the power supply circuit. A movable member is supported by the main body, a detector is disposed in the main body to detect a movement of the movable member and the switch is configured to electrically open the power supply circuit when the detector detects the movement of the movable member. The wires connected to the electric motor are not connected to the detector so that the length of the wires is shortened.

Growing community of inventors

Anjo, Japan

Yusuke Hirata