External circulation type ball screw with a noise-reduction structure
US8100024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2009 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Apr 15, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19767
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An external circulation type ball screw with a noise-reduction structure is provided with a noise-reduction cover to be mounted on the nut. The noise-reduction cover is defined with a noise-reduction groove with two ends to cover impacting portions of the return path of the return member where the rolling elements impact the return path. With the design of the noise-reduction groove, noises will counteract each other after being transmitted to the noise-reduction groove, thus reducing the noises produced by the rolling elements impacting the return member and accordingly reducing the noises produced during operation of the ball screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.