Title:
ELECTRIC BOOSTER AND STROKE DETECTOR
Document Type and Number:
WIPO Patent Application WO/2016/194611
Kind Code:
A1
Abstract:
Provided is an electric booster allowing the movement position of an input member to be detected in a wide axial range. This electric booster has: an input rod comprising a magnetic material; an input plunger comprising a nonmagnetic material; and an input piston comprising a magnetic material. This stroke detector is equipped with: magnetic members which have magnetic poles and are arranged along the direction of movement of the input plunger; and a Hall sensor unit which is fixed to a housing and detects the movement position of the input plunger using the density of magnetic flux from the magnetic members. Thus, a flat magnetic flux distribution having a wide axial range can be provided, and the movement position of the input plunger can be detected in a wide axial range with relatively high accuracy.
Inventors:
ODAIRA ATSUSHI (JP)
SHIMIZU SHINJI (JP)
SHIMIZU SHINJI (JP)
Application Number:
PCT/JP2016/064700
Publication Date:
December 08, 2016
Filing Date:
May 18, 2016
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60T13/74; B60T8/171; G01B7/00
Foreign References:
| JP2015021745A | 2015-02-02 | |||
| JP2014095614A | 2014-05-22 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
Ono Shinjiro (JP)
Ono Shinjiro (JP)
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