Electric power steering system
US9630647B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2013 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Mar 18, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/0213
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electric power steering system includes a joint that connects a rotary shaft of an electric motor with a worm shaft of a speed reducer. The joint includes a first rotational element that has a boss into which a first end portion of the worm shaft is press-fitted, and a flange extending radially from the boss. The first bearing is held by a housing and supports the first end portion so that the first end portion is rotatable and movable in an axial direction. A first elastic body, which urges the worm shaft in the axial direction toward the electric motor through the first rotational element, is provided between an inner ring of the first bearing and the flange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.