| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hydraulic control valve capable of achieving simplified configuration and size reduction, selectively communicating three portions, and functioning as a three-way valve that can close those portions against one another.SOLUTION: A supply-side valve mechanism 3 includes: a first port 9 through which a hydraulic pressure of a high pressure portion 8 is applied; a second port 10 communicating with an intermediate pressure portion 20, and a first valve body 11 closing these first and second ports. A discharge-side valve mechanism 4 includes: a third port 13 communicating with the intermediate pressure portion 20; a fourth port 15 communicating with a low pressure portion 14; and a second valve body 16 closing the third port 13 and the fourth port 15. A hydraulic control valve comprises an opening/closing operation mechanism 25 selectively operating at a first operating position of moving either the first valve body 11 or the second valve body 16 to a valve opening position, a second operating position of moving both the first valve body 11 and the second valve body 16 to valve closing positions, and a third operating position of moving either the first valve body 11 or the second valve body 16 to the valve opening position.</p> |
