Title:
ELECTRIC BOOSTER
Document Type and Number:
WIPO Patent Application WO/2018/097278
Kind Code:
A1
Abstract:
The electric booster is provided with: first and second compression coil springs for biasing an input member and a boosting member in a direction away from each other along an axial direction; and a support member for supporting the second compression coil spring between the input member and the boosting member. When the input member moves in a direction toward a master cylinder, the support member comes into contact with the boosting member without coming into contact with an input plunger, whereas when the input member moves in a direction away from the master cylinder, the support member comes into contact with the input plunger and moves away from the boosting member. Consequently, hysteresis characteristics can be applied to the entire stroke of the input member, whereby an improved pedal feeling can be achieved.
Inventors:
ODAIRA ATSUSHI (JP)
Application Number:
PCT/JP2017/042348
Publication Date:
May 31, 2018
Filing Date:
November 27, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60T13/74
Foreign References:
| JP2016120898A | 2016-07-07 | |||
| JP2016007968A | 2016-01-18 | |||
| JP2013056588A | 2013-03-28 | |||
| JP2013519553A | 2013-05-30 | |||
| JPS6313855A | 1988-01-21 | |||
| JP2012096649A | 2012-05-24 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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