| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the reliability of a seal of a mating surface between a valve block and a casing while suppressing an increase of the physique of a device in order to suppress the deterioration of the reliability of the fluid pressure control device resulting from the corrosion of the valve block, related to the brake fluid pressure control device mounted to a truck or the like having a long life period. <P>SOLUTION: In the brake fluid pressure control device in which a clearance between the casing 16 and the valve block 12 is liquid-tightly sealed by an annular seal member 1, and which is mounted to a vehicle in a posture that the mating surface between the valve block 12 and the casing 16 is inclined with respect to a vertical face or a horizontal face, as the annular seal member 1, a plurality of seal edges 3 are aligned in a plurality of rows in parallel with one another in a region in which a base 2 is oppositely arranged along a face (upper surface or the like) on which the stay and accumulation of a corrosion factor of the device is liable to occur, and the number of the seal edges in the region is made larger than the number of the seal edges in the other region of the base 2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
