| 摘要 |
<p>A fluid pressure proportioning valve, particularly of the type which is used in the hydraulic braking systems of automotive vehicles, includes a plug member movably carrying a piston member. The piston member defines a through bore communicating pressurized fluid to an outlet on the plug member. The piston member also carries a valve member opening and closing the through bore in response to reciprocation of the piston member. A lip seal, spring seat, and a coil spring are carried by the piston member. The plug member, piston member, valve member, lip seal, spring seat 100, and coil spring 110, comprise a unitary subassembly which may be assembled with a housing providing a bore for receiving the coil spring and lip seal and providing an inlet communicating pressurized fluid from a master cylinder. The unitary subassembly incorporates virtually all component parts, the dimension of which affect the proper operation of the fluid pressure proportioning valve. As a result, the dimensional tolerances of the housing may be relaxed without adverse effect upon the proportioning valve.</p> |
