Drive unit
US9435400B2 · kind B2 · utility
12Cited by
15References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2013 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Aug 25, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19828
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drive unit includes an electric motor, a worm shaft coupled to the motor, a worm gear engaging with the worm shaft, and an output shaft connected to the worm gear. The motor has a motor shaft on which the worm shaft is fixed. The worm shaft is made of plastic. The drive unit further includes a metallic sleeve press fitted to the motor shaft. An outer profile of the sleeve is non-circular. A correspondingly shaped receiving hole is formed in the worm shaft to receive the sleeve. The sleeve rotates with the motor shaft and drives the worm shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.