Hitachi, Ltd.

Hitachi Astemo Ltd.

Kohei Matsushita

Hisashi Tanie

Yoshitaka Iwaji

Yuji Enomoto

Naoki Sakurai

Kisho Ashida

Takayoshi Nakamura

Hirooki Tokoi

Yusuke Nishino

Ryota Ashizawa

Kazumoto Sano

Fusao Houjyou

The present disclosure provides a disk brake capable of making it easier for the piston to return than conventional ones when the brake is released from a state where the brake is applied. In the disk brake, the seal grooveincludes a front wall, a rear wallfarther from the brake rotor than the front wallin the axial direction Dl, and a bottom wallextending along the axial direction Dl between the rear walland the front wall. The bottom wallincludes a front bottom walladjacent to the front walland a rear bottom walladjacent to the rear wall. The rear bottom wallhas a depth dfrom the inner circumferential surfaceof the cylinder, the depth dbeing larger than a dimension dof the uncompressed piston sealin the direction of the depth dand being larger than a depth dfrom the inner circumferential surfaceof the cylinderof the front bottom wall

Disk brake

A highly reliable electromechanical integral motor is provided. In the electromechanical integral motor including an axial gap type motor and a power conversion control device, the power conversion control device is mounted on an end bracket portion of the motor. Additionally, a space is provided between the end bracket portion of the motor and the power conversion control device. Further, the end bracket portion of the motor and the power conversion control device are fixed by a plurality of fixing members, and at least one set of the plurality of fixing members is disposed to be spaced apart from each other.

Electromechanical integral motor

Growing community of inventors

Tokyo, Japan

Kohei Matsushita