Ball screw drive of an electromechanical power steering device with deflecting bodies for a ball return
US10913484B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 22, 2017 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Dec 7, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2025/2096
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electromechanical power steering device may include a servomotor that drives an axially movable component via a ball nut mounted in a bearing such that the ball nut can be rotated about a longitudinal axis in a housing. The ball nut may be engaged with a threaded spindle configured on the axially movable component. The ball nut may include a ball screw on its inner side for balls to roll on, and an external ball return means that connects a start of the ball screw to an end of the ball screw to make endless circulation of the balls possible. A return channel of the ball return means may be formed by way of a deflecting body and a pulley wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.