Steering device
US-2024286670-A1 · Aug 29, 2024 · US
Electronic power-steering apparatus
US9102351B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9102351-B2 |
| Application number | US-201213810906-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 11, 2012 |
| Priority date | Jun 16, 2011 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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Construction of an electric power-steering apparatus is achieved that, by stably suppressing backlash of an output shaft 6 a of an electric motor 5 over a long period of time, is able to stably reduce vibration and strange noise that occurs during operation. The front end section of the output shaft 6 a and the base end section of a worm 7 are connected such that torque can be transmitted and such that relative displacement in the axial direction is possible. An elastic member 31 having an elastic force in a direction that separates the output shaft 6 a and worm 7 is provided in the connecting section between the output shaft 6 a and the worm 7 . Due to the elastic force of the elastic member 31 , together with the tandem arrangement contact angles, the preload is applied to a pair of ball bearings 14 a , 14 b that support the output shaft 6 a with respect to the motor case 13 such that the output shaft 6 a can rotate freely.
First claim
Opening claim text (preview).
What is claimed is: 1. An electric power-steering apparatus, comprising: a housing supported by and fastened to a vehicle body or having a portion thereof fastened to the vehicle body; a rotating shaft comprising a front-end section supported by the housing so as to be able to rotate freely, and that applies a steering angle to steered wheels, and a rear-end section connected to a steering wheel; a worm wheel concentrically supported by and fastened to part of the rotating sha…
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Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
- B62D5/0409Primary
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9102351B2 cover?
- Construction of an electric power-steering apparatus is achieved that, by stably suppressing backlash of an output shaft 6 a of an electric motor 5 over a long period of time, is able to stably reduce vibration and strange noise that occurs during operation. The front end section of the output shaft 6 a and the base end section of a worm 7 are connected such that torque can be trans…
- Who is the assignee on this patent?
- Ishii Toru, Yamamoto Takeshi, Sawa Katsuhiko, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B62D5/0409. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).