Title:
RACK-DRIVEN ELECTRIC POWER ASSISTED STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/184866
Kind Code:
A1
Abstract:
Embodiments of the present invention relate to a rack-driven electric power assisted steering device. Embodiments of the present invention provide a rack-driven electric power assisted steering device comprising: a rack bar which slides in the axial direction in a rack housing and has an outer circumferential screw groove formed at the outer circumferential surface thereof; a ball nut which has an inner circumferential screw groove formed at the inner circumferential surface thereof and corresponding to the outer circumferential screw groove of the rack bar, and has a ball circulation passage formed between the inner and outer circumferential surfaces thereof, the ball circulation passage passing through the ball nut in the axial direction; end caps coupled to one end and the other end of the ball circulation passage, respectively, each of the end caps having a ball return hole provided to circulate balls through the ball circulation passage, the outer circumferential screw groove, and the inner circumferential screw groove; and a support member coupled to the inner circumferential surface of the ball nut while supporting the end caps in the axial direction.
Inventors:
LEE JONG BAEK (KR)
Application Number:
PCT/KR2020/002670
Publication Date:
September 17, 2020
Filing Date:
February 25, 2020
Export Citation:
Assignee:
MANDO CORP (KR)
International Classes:
B62D5/04; B62D3/12; F16H25/22
Foreign References:
| KR20160053207A | 2016-05-13 | |||
| JP2017214956A | 2017-12-07 | |||
| US8307940B2 | 2012-11-13 | |||
| JP2008143343A | 2008-06-26 | |||
| KR20120045598A | 2012-05-09 |
Attorney, Agent or Firm:
YUIL HIGHEST INTERNATIONAL PATENT AND LAW FIRM (KR)
Download PDF:
Previous Patent: ANTI-REFLECTIVE FILM, POLARIZING PLATE, AND DISPLAY DEVICE
Next Patent: MEDICAL SYRINGE
Next Patent: MEDICAL SYRINGE