Title:
MECHANISM FOR CONVERTING ROTARY MOTION TO LINEAR MOTION AND ELECTRIC BOOSTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/123581
Kind Code:
A1
Abstract:
Provided is a mechanism for converting rotary motion to linear motion capable of being configured to be compact and of obtaining a large reduction ratio. A mechanism for converting rotary motion into linear motion is configured so that rotational motion from a cylindrical member is transmitted to a shaft member via an engaging portion between the cylindrical member and each rod member and an engaging portion between each rod member and the shaft member and the shaft member moves linearly with respect to a housing. Internal teeth are provided on the inner circumferential face of the cylindrical member, and external teeth to engage with the internal teeth are provided on the outer circumferential face of each rod member. An annular support member comprising an outer circumferential face having a tooth portion to engage with the external teeth is provided. The annular support member is fixed to the housing.
Inventors:
NAGATA DAIKI (JP)
USUI TAKUYA (JP)
USUI TAKUYA (JP)
Application Number:
PCT/JP2017/044655
Publication Date:
July 05, 2018
Filing Date:
December 13, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16H25/20; B60T13/74
Foreign References:
| JP2007100717A | 2007-04-19 | |||
| JP2016124355A | 2016-07-11 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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