Title:
GEAR HOUSING FOR ELECTRIC POWER STEERING DEVICE, MANUFACTURING METHOD THEREOF, AND ELECTRIC POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/087945
Kind Code:
A1
Abstract:
A gear housing structure is achieved, with which rigidity and moldability can be ensured with respect to a front-side housing constituting the gear housing, even when the gear housing is made thinner. Reinforcing ribs 38a, 38b, 38c are disposed on a front-side surface of a front-side housing 15a so as to span between a worm accommodation part 18a and a worm wheel bottom part 40 constituting a worm wheel accommodation part 17a. The direction in which the reinforcing ribs 38a, 38b, 38c extend is made to coincide with the direction in which meshing reactive force between a worm wheel and a worm acts.
Inventors:
ISHII TAKAYUKI (JP)
Application Number:
PCT/JP2018/039780
Publication Date:
May 09, 2019
Filing Date:
October 25, 2018
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
B62D5/04; B22C9/24; B22D17/00; B29C45/00
Domestic Patent References:
| WO2016084659A1 | 2016-06-02 |
Foreign References:
| JP2012020647A | 2012-02-02 | |||
| JP2017024702A | 2017-02-02 | |||
| JP2002517694A | 2002-06-18 |
Other References:
See also references of EP 3705375A4
Attorney, Agent or Firm:
KIWA INTERNATIONAL (JP)
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