发明授权
- 专利标题： Hydraulic pressure control valve
- 专利标题（中）： 液压控制阀
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申请号： US627909申请日： 1990-12-17
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公开(公告)号： US5058626A公开(公告)日： 1991-10-22
- 发明人: Tokuro Takaoka , Tsuto Sasaki , Yukio Kobayashi , Kouichi Saitoh , Satoshi Hamano , Toshiya Tatumoto
- 申请人： Tokuro Takaoka , Tsuto Sasaki , Yukio Kobayashi , Kouichi Saitoh , Satoshi Hamano , Toshiya Tatumoto
- 申请人地址： JPX Tokyo JPX Hadano
- 专利权人： Honda Giken Kogyo Kabushiki Kaisha,Seiki Giken Kogyo Kabushiki Kaisha
- 当前专利权人： Honda Giken Kogyo Kabushiki Kaisha,Seiki Giken Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo JPX Hadano
- 优先权： JPX63-120796 19880914
- 主分类号： B62D5/07
- IPC分类号： B62D5/07 ; B62D5/087 ; B62D6/02 ; G05D16/18 ; F15B13/02
摘要：
A hydraulic pressure control valve includes a valve body having a slide bore with a circular cross-section, an inlet port opened in an inner surface of the slide bore, a control pressure port and an outlet port at axially spaced-apart distances in this sequence; a valve spool axially slidably fitted in the valve body; and a first variable orifice and a second variable orifice both formed between the valve body and the valve spool. The first variable orifice controls the degree of communication between the inlet port and the control pressure port, and the second variable orifice controls the degree of communication between the control pressure port and the outlet port. In this hydraulic pressure control valve, the valve spool has smaller diameter portions coaxially formed therein to define annular oil passages between the inner surface of the slide bore and the valve spool and each smaller diameter portion has an outer diameter set uniformly over the axially entire length thereof.