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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2016/093077
Kind Code:
Provided is a brake device with which the feeling of operating a brake can be improved. The brake device is equipped with a stroke simulator which: has a piston which can actuate the inside of a cylinder in the axial direction by using brake fluid supplied from a master cylinder, demarcates the inside of the cylinder into at least a positive pressure chamber and a back pressure chamber, and has a pressure-receiving area, facing the back pressure chamber, which is smaller than a pressure-receiving area facing the positive pressure chamber; and as a result of the actuating of the piston, generates an operation reaction force that accompanies a brake operation by a driver. The brake device is further equipped with: a second oil channel provided between the positive pressure chamber and the master cylinder; a third oil channel that connects the back pressure chamber and a first oil channel; a fourth oil channel that connects the back pressure chamber and a reservoir tank; and a switching unit that switches between the connection of the back pressure chamber and the first oil channel and the connection of the back pressure chamber and the reservoir tank.

SAITO, Masayuki (4-7-1, Onna, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
NAKAZAWA, Chiharu (4-7-1, Onna, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
Application Number:
Publication Date:
June 16, 2016
Filing Date:
November 27, 2015
Export Citation:
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HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
B60T8/17; B60T8/48; B60T11/16; B60T13/122; B60T13/16
Foreign References:
Attorney, Agent or Firm:
ONO, Shinjiro et al. (YUASA AND HARA, Section 206 New Ohtemachi Bldg., 2-1, Ohtemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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