Vehicle brake hydraulic pressure control unit
AssigneeNissin Kogyo Co., Ltd.
InventorMasatoshi IYATANI
Life of this patent
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Abstract
A vehicle brake hydraulic pressure control unit in which a pair of regulator valves, four normally open electromagnetic valves, a pair of reservoirs, four normally closed electromagnetic valves, a pair of pumps and a pair of suction valves are provided in a common base unit with the normally open electromagnetic valves and the normally closed electromagnetic valves arranged in parallel with each other. A pair of primary and secondary suction valves are arranged collectively to lie between four normally open electromagnetic valves and four normally closed electromagnetic valves which are arranged in parallel with each other and individually to lie between each set of two ports 24A, 24B; 24C, 24D from each end of four ports 24A, 24B, 24C, 24D.
Claims2
A vehicle brake hydraulic pressure control unit comprising a base unit, comprising:
- a pair of regulator valves which are interposed between a pair of output ports provided on a tandem master cylinder and a pair of hydraulic pressure lines corresponding to the respective pair of output ports, respectively,
- four normally open electromagnetic valves which are interposed between four road wheel brakes, which correspond to both the output ports with two corresponding to each port, and both the hydraulic pressure lines in such a manner as to correspond to the four road wheel brakes, respectively;
- a pair of reservoirs which correspond to both the output ports, respectively;
- four normally closed electromagnetic valves which are interposed between both the reservoirs and the four road wheel brakes, respectively, in such a manner as to correspond to each one of the reservoirs and each of two of the four road wheel brakes;
- a pair of pumps which pump brake fluid from both the reservoirs to pressurize the brake fluid so pumped for outputting to both the hydraulic pressure lines;
- and
- a pair of suction valves which are interposed between both the output ports and suction sides of both the pumps, respectively,
- wherein the normally open electromagnetic valves and the normally closed electromagnetic valves are arranged in parallel with each other,
- wherein four ports, which connect to the four road wheel brakes, respectively, are provided on one external surface of the base unit in such a manner as to be aligned in parallel with a direction in which the normally open electromagnetic valves and the normally closed electromagnetic valves are arranged in parallel with each other, and
- wherein both the suction valves are arranged collectively to lie between the normally open electromagnetic valves and the normally closed electromagnetic valves which are arranged in parallel with each other, and are arranged individually to lie between each set of the two ports from each end of the aligned four ports.
Dependencies are inferred from the claim text.