Komatsu Corporation

Shouta Akazaki

Hideshi Iitani

This electric cylinder includes a motor that serves as a driving source, an output shaft that rotates in response to driving of the motor, a first rotor that is joined to the output shaft and rotates in response to rotation of the output shaft, and a second rotor that is adjacent to the first rotor and rotates in response to rotation of the first rotor. The first rotor has an open hollow portion capable of accommodating a lubricant therein.

Electric cylinder and work machine

An electric cylinder includes a motor that is a driving source, an output shaft configured to rotate in response to driving of the motor, a sun gear coupled to the output shaft and configured to rotate in response to the rotation of the output shaft, a tubular holder disposed adjacent to an axial end surface of the motor and including a fluid accommodation portion that allows a magnetic fluid to be accommodated between the holder and an outer periphery of the sun gear, a pair of magnetic pole pieces provided on an inner peripheral surface of the holder, and a magnet disposed between the pair of magnetic pole pieces and configured to hold the magnetic fluid in the fluid accommodation portion by using an action of a magnetic field.

Growing community of inventors

Tokyo, Japan

Shouta Akazaki