发明名称 |
Hydraulic brake pressure control valve |
摘要 |
The hydraulic brake pressure control valve is provided including a valve casing mounted on a master cylinder of a hydraulic brake system. A valve piston is provided with a stepped configuration with an enlarged diameter portion and a reduced diameter portion. The valve piston is mounted slidably and longitudinally along the longitudinal bore of the valve casing. The valve piston is normally urged into a non-operating position and is shiftable longitudinally in an opposite direction from the non-operating position under the effect of a difference in the cross-sectional areas of the enlarged and reduced diameter portions, upon which hydraulic brake fluid pressure acts. The stepped valve piston is defined with a brake fluid passage extending longitudinally therein providing communication between brake fluid passages adjacent the reduced diameter portion and the enlarged diameter portion of the stepped valve piston. A fluid valve member is disposed in the fluid passage and is adapted to hold the fluid passage in an open position when the stepped valve piston is in a non-operating position and to cause the fluid valve to be opened and closed when the stepped valve piston operates in a valving manner. An arrangement is provided such that when the fluid valve is brought to either an opened or a closed position an outer wall surface associated with the valve member abuts an inner wall surface of the stepped valve piston.
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申请公布号 |
US5066072(A) |
申请公布日期 |
1991.11.19 |
申请号 |
US19900563245 |
申请日期 |
1990.08.06 |
申请人 |
JIDOSHA KIKI CO., LTD. |
发明人 |
YANAGI, KUNIO;YAMAKOSHI, MUTSURO;KAMIYOSHIHARA, AKIHIRO |
分类号 |
B60T8/26;B60T11/34 |
主分类号 |
B60T8/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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