| 摘要 |
PURPOSE:To provide a proper attitude of a vehicle in braking by setting an early press force of a valve plunger according to the difference between urging forces of main and sub-springs urged respectively in the opposite directions. CONSTITUTION:A hydraulic controlling valve 1 consists of a proportioning valve 2 and a vehicle weight detecting section 3. And the valve 2 has a valve plunger 10 urged by a spring and a ball valve 11, and the detecting section 3 has a lever 12 pivoted by the variation of distance between the upper and lower portions of a vehicle spring. Between lower and upper spring seats 30, 31 of the upper end of this plunger 10 is compressively provided a main spring 32, and between a flange 30a and a housing 13 a sub-spring 33. Thus, the early press force of the plunger 10 can be substantially reduced to prevent rear wheels from being locked earlier than front wheels. |
