Title:
POWER UNIT AND POWER UNIT ASSEMBLY METHOD
Document Type and Number:
WIPO Patent Application WO/2022/059153
Kind Code:
A1
Abstract:
Provided are a power unit and a power unit assembly method in which the interference between an inner rotor and an outer stator is prevented and the number of assembly steps can be reduced. This power unit (10) has a motor (M) having a rotor shaft (S) to which an inner rotor (R) is fixed, a case (C) for housing the rotor shaft (S), and a drive gear (D) for transmitting the driving force of the rotor shaft (S) to the downstream side, wherein the drive gear (D) forms in a substantially cylindrical shape separated from the rotor shaft (S) and is configured to be capable of connecting to the outer circumferential surface of the rotor shaft (S). The outer circumferential surface of the drive gear (D) is provided with a gear portion (65) for transmitting the driving force to the downstream side and a non-gear portion (65a). The case (C) has a bearing (53) into which an outer ring (53b) is press-fitted. The non-gear portion (65a) is press-fitted into an inner ring (53a) of the bearing (53) and thereby the drive gear (D) falls at a predetermined position.
Inventors:
KAJIHARA EISUKE (JP)
FUJIKUBO MAKOTO (JP)
FUJIKUBO MAKOTO (JP)
Application Number:
PCT/JP2020/035349
Publication Date:
March 24, 2022
Filing Date:
September 17, 2020
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
H02K7/00; B60K17/14; B62M7/12
Domestic Patent References:
| WO2017057070A1 | 2017-04-06 |
Foreign References:
| JP2003329114A | 2003-11-19 | |||
| US20160099632A1 | 2016-04-07 | |||
| JP2008037355A | 2008-02-21 |
Attorney, Agent or Firm:
SAKAMOTO Kiyotaka et al. (JP)
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