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Title:
BRAKING DEVICE
Document Type and Number:
Japanese Patent JPH0367760
Kind Code:
A
Abstract:

PURPOSE: To shorten pedal strokes in normal conditions and reduce pedal pressure when a dynamic pressure line is disabled by connecting a double side- driving piston to a static pressure line braking circuit and in parallel to a wheel brake, the static pressure line brake circuit being connected to a master cylinder, and adjusting control pressure that acts on the piston.

CONSTITUTION: Dynamic pressure from a booster 4 connected to a dynamic pressure source 2 and the like is adjusted by operation of a pedal 1 and is output to a dynamic pressure line 6, and static pressure roughly equal to the dynamic pressure is output from a master cylinder 10 to a static pressure line 7 and the pressure of the static pressure line is supplied to a wheel brake 15 via an anti-lock switching valve 12. In such a brake device, a double side-driving piston 19 driven by a flow control valve 23 which is closed at both ends while not in operation is provided in parallel to a wheel brake 15. During operation of the pedal, the piston 19 is so controlled as to reduce the capacity of the static pressure line, whereas during antilock control the switching valve 12 is blocked and the piston 19 is so controlled as to enlarge the capacity of the static pressure line.


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Inventors:
TAKADA KOJI
Application Number:
JP1989000205388
Publication Date:
March 22, 1991
Filing Date:
August 07, 1989
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
B60T8/1761; B60T8/42; B60T8/48; B60T13/12; (IPC1-7): B60T8/48
Domestic Patent References:
JPS62137256A1987-06-20
JPS63258250A1988-10-25



 
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