Title:
IN-WHEEL MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/032486
Kind Code:
A1
Abstract:
The present invention relates to an in-wheel motor with improved driving force of the motor and a simplified cooling structure for the motor and a braking device. An in-wheel motor 20 according to the present invention comprises: a motor that transmits motive power to a wheel 11, at least a portion of the motor being disposed inside the wheel 11; a first cooling part 45 and a second cooling part 46 that cool a stator 21 of the motor; and a braking device 25 that applies braking to the wheel 11. The braking device 25 is formed from a brake disc 251 that rotates with the wheel 11 and a brake caliper 252 that induces braking by imparting friction to the brake disc 251. The brake caliper 252 operates in the axial direction of the motor to induce braking in the brake disc 251. A portion of an axial-direction end of the brake caliper 252 is in contact with the stator 21. The first cooling part 45 and the second cooling part 46 cool the braking device 25 through the stator 21.
Inventors:
SUTO TETSUYA (JP)
TAKAHASHI AKESHI (JP)
ITO MAKOTO (JP)
TAKAHASHI AKESHI (JP)
ITO MAKOTO (JP)
Application Number:
PCT/JP2022/027863
Publication Date:
March 09, 2023
Filing Date:
July 15, 2022
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B60K7/00; F16D55/228; F16D65/02; F16D65/853
Foreign References:
| JP2006282158A | 2006-10-19 | |||
| JP2004129389A | 2004-04-22 | |||
| JPH0868432A | 1996-03-12 | |||
| JP2012031978A | 2012-02-16 | |||
| JP2009542496A | 2009-12-03 | |||
| JP2005337355A | 2005-12-08 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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