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Patent Searching and Data


Title:
BRAKE DEVICE AND BRAKE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/093077
Kind Code:
A1
Abstract:
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.

Inventors:
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:
JP2015/083316
Publication Date:
June 16, 2016
Filing Date:
November 27, 2015
Export Citation:
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Assignee:
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:
JP2012176745A2012-09-13
JP2001213295A2001-08-07
JP2010126037A2010-06-10
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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