Title:
ELECTRIC BOOSTER
Document Type and Number:
WIPO Patent Application WO/2018/155286
Kind Code:
A1
Abstract:
Provided is an electric booster comprising a stroke detection device, with which ease of installation in a vehicle can be improved without increasing size. The electric booster comprises an electric motor for propelling a piston of a master cylinder, a stroke detection device that detects the amount of movement of an input member connected to a brake pedal, a rotational angle detector that detects the rotational angle of a rotating shaft of the electric motor, a control device that controls the driving of the electric motor on the basis of the detection results in the stroke detection device and the rotational angle detector, and a casing in which is stored wiring electrically connecting the electric motor and the control device. The stroke detection device comprises a first magnet that moves together with the input member, and a first magnetism detection element that detects magnetism from the first magnet. The rotational angle detector comprises a second magnet that rotates together with the rotating shaft of the electric motor, and a second magnetism detection element that detects magnetism from the second magnet. The first magnetism detection element and the second magnetism detection element are disposed inside the casing.
Inventors:
FUKAYAMA NORIHISA (JP)
TSUCHIYA HIDEKAZU (JP)
SHIMIZU SHINJI (JP)
TSUCHIYA HIDEKAZU (JP)
SHIMIZU SHINJI (JP)
Application Number:
PCT/JP2018/005154
Publication Date:
August 30, 2018
Filing Date:
February 15, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
B60T13/74
Domestic Patent References:
| WO2016194611A1 | 2016-12-08 |
Foreign References:
| JP2016075686A | 2016-05-12 | |||
| JP2016193636A | 2016-11-17 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
Download PDF:
Previous Patent: RESIN COMPOSITION FOR MEDICAL EQUIPMENT
Next Patent: POROUS FILM, SEPARATOR FOR RECHARGEABLE BATTERY, AND RECHARGEABLE BATTERY
Next Patent: POROUS FILM, SEPARATOR FOR RECHARGEABLE BATTERY, AND RECHARGEABLE BATTERY