| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform forced pulling/returning of a spool valve by a piston when the spool valve is locked by a simple, inexpensive and compact structure in a brake fluid pressure control device provided with a pressure adjustment device for adjusting a fluid pressure fed from an auxiliary fluid pressure source by the spool valve pushed/moved by the piston and output it. <P>SOLUTION: In the brake fluid pressure control device, the pressure adjustment device RG constituted by an advanceable-retreatable pressure adjustment piston 11; the spool valve 12 pressed by the pressure adjustment piston 11 and moved to a position corresponding to the pressing force; and a return spring 13 for resetting the spool valve is provided in a cylinder bore 2. An engagement member 22 engaged with both the pressure adjustment piston 11 and the spool valve 12 at a central side in a radial direction of the cylinder bore 2 than an outer periphery of the return spring 13 is provided, and the pressure adjustment piston 11 and the spool valve 12 are connected to each other through the engagement member 22. <P>COPYRIGHT: (C)2009,JPO&INPIT |
