To provide a brake fluid pressure controlling device which can easily be manufactured.
In a housing 4, a main passage 6 for guiding fluid pressure into a master cylinder 1 into a wheel cylinder 3, a first return passage 7 for making the wheel cylinder 3 communicate to a reservoir 5 and a second return passage 8 for making the reservoir 5 communicate to the master cylinder 1. An open type pressure intensifying solenoid valve 9 is provided for opening/ closing the main passage 6. A closed type pressure decreasing solenoid valve 10 is provided for opening/closing the first return passage 7. In the middle of the second return passage 8, a pump device 11 is provided for pumping up a brake fluid in the reservoir 5 and returning it to the master cylinder 1. A valve body 23 for housing a valve 28 of the pressure intensifying solenoid valve 9 extends through the second return passage 8 closer to the master cylinder 1 than the pump device 11, and a throttle passage 29 for the brake fluid is formed between the outer circumference of this valve body 23 and the inner circumference of the second return passage 8.
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SAIDA NORIHIRO
ICHIKI FUMIMASA
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