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Title:
PRESSURE REGULATION UNIT, AND VEHICULAR BRAKE CONTROL DEVICE EQUIPPED WITH THE SAME
Document Type and Number:
Japanese Patent JP2017202765
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To eliminate an electromagnetic valve in a brake control device comprising a fluid passage in which a pressure is adjusted by an electric motor.SOLUTION: A pressure regulation unit comprises: a control cylinder having a bottomed cylindrical hole; a control piston which is inserted in the hole and is movable in an axial direction; a tip end seal which slidingly contacts a cylindrical surface of the control cylinder; and a rear end seal which slidingly contacts any one of the cylindrical surface and a lateral face of the control piston. In the pressure regulation unit, a pressure regulation chamber which is partitioned by the cylindrical surface, a bottom surface of the control cylinder, an end surface of the control piston and the tip end seal, and is connected to the wheel cylinder, and a communication chamber which is partitioned by the cylindrical surface, the lateral surface, the tip end seal and the rear end seal, and is connected to a simulator are formed. At an initial position of the electric motor, a master cylinder and the pressure regulation chamber are communicated with each other, and the master cylinder and the communication chamber are blocked from each other. Further, in the case where the electric motor is rotated from the initial position by a specified angle, the master cylinder and the pressure regulation chamber are blocked from each other, and the master cylinder and the communication chamber are communicated with each other.SELECTED DRAWING: Figure 2

Inventors:
IZUMOTO HIROYUKI
Application Number:
JP2016096123A
Publication Date:
November 16, 2017
Filing Date:
May 12, 2016
Export Citation:
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Assignee:
ADVICS CO LTD
International Classes:
B60T13/138; B60T8/17; B60T13/122