Title:
ELECTRIC POWER STEERING DEVICE
Document Type and Number:
Japanese Patent JP2020090262
Kind Code:
A
Abstract:
To improve mountability of an electric power steering device comprising an internal pressure adjusting part.SOLUTION: An electric power steering device 100 comprises: a rack housing 17 in which a rack accommodation space for accommodating a rack shaft 12 is formed; a worm housing 53 in which a worm wheel 52 and a worm shaft 51 are accommodated, and a worm accommodation space communicating with the rack accommodation space is formed; and an internal pressure adjusting part 60, 70 disposed in the worm housing 53 in order to adjust pressure force inside the rack accommodation space and the worm accommodation space. The internal pressure adjusting part 60, 70 has a bellows 61, 71 which blocks at least one opening end of a first storage hole 54 storing the worm wheel 52 and a second storage hole 55 storing the worm shaft 51, and the bellows 61, 71 deforms according to differential pressure between the pressure force outside and the pressure force inside the worm accommodation space.SELECTED DRAWING: Figure 3
Inventors:
YAMADA RYOTA
Application Number:
JP2018230327A
Publication Date:
June 11, 2020
Filing Date:
December 07, 2018
Export Citation:
Assignee:
KYB CORP
International Classes:
B62D5/04; B62D3/12; F16J3/02; F16J3/06
Attorney, Agent or Firm:
Goto Patent Office