JPS6254058U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the essential parts of an embodiment of the brake fluid pressure control valve according to the present invention, Fig. 2 is a sectional view of the main parts of another embodiment, and Fig. 3 is a sectional view of the main parts of a conventional brake fluid pressure control valve. FIG. 2 is a sectional view of a main part showing an example. 20: Main body, 21: Input port, 22: Output port, 23: Plunger, 24: Control room, 25:
Locking member, 26: Piston housing, 27: First piston, 27a: Stopping member, 28: Proportioning spring, 29: Second piston, 3
0: Hydraulic pressure chamber, 31: Return spring, 32:
Hydraulic pressure chamber, 33: Liquid passage, 34: Open/close valve, 36: Lever, 40: Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A brake fluid pressure control valve that senses the relative position of a sprung mass and an unsprung mass of a vehicle to control brake fluid pressure supplied from a master cylinder to a brake unit, wherein the fluid pressure from the master cylinder is a hydraulic valve that controls the reduction of brake fluid pressure to the brake unit by operating a plunger to close a fluid flow path when a predetermined value is exceeded; and a first piston that is provided to be movable forward and backward in the direction of the plunger by hydraulic pressure. an elastic member whose one end is supported by the first piston and whose other end elastically urges the plunger in a direction to open the liquid flow path; and an elastic member that moves forward and backward in accordance with the relative positions of the sprung and unsprung portions of the vehicle. A brake fluid pressure control valve comprising: a second piston that supplies piston fluid pressure to the first piston via a fluid passage; and an on-off valve that opens and closes the fluid passage.