Komatsu Corporation

Akira Okabe

Teiichirou Chiba

Hiroyuki Tokunaga

Natsuki Watanabe

Kazuhiro Okamoto

Ryo Ono

A motor cooling structure for cooling a motor, which includes a shaft transmitting power and a rotor core attached to an outside of the shaft, by a cooling medium, includes: a cooling medium supply passage that extends to an inside of the shaft in an axial direction of the shaft and passes the cooling medium through the cooling medium supply passage; and a plurality of cooling medium passages that are branched from the cooling medium supply passage to cool the rotor core while flowing the cooling medium without branching the cooling medium in the axial direction and then eject the cooling medium from a plurality of ejection holes opened to a surface of the rotor core, wherein distances from a cooling medium inlet, through which the cooling medium flows into the cooling medium supply passage, to the respective ejection holes are equal between the plurality of cooling medium passages.

Motor cooling structure and motor

An electrical motor that includes a circular stator attached to an inner side of a housing and a rotor disposed at an inner side of the stator in a radial direction, the electrical motor includes: a terminal connected to a power supply cable drawn from a coil of the stator; a terminal box that is attached to the housing and stores the terminal; and an insulating material that is disposed between the terminal box and the terminal and separable from the terminal.

Electrical motor

An interlock mechanism of a motor, includes a terminal box configured to store a terminal used to connect a power supply cable to the motor; a lid configured to close the terminal box; a fixing member configured to fix the lid to the terminal box; a first connector attached to the lid; a second connector capable of being coupled with the first connector and configured to cover the fixing member in a state that the second connector is coupled with the first connector.

Growing community of inventors

Naka-gun, Japan

Akira Okabe