| 摘要 |
<p>PURPOSE:To provide a hydraulic control valve which applies back pressure to oil leaking from an oil supply chamber into an oil delivery chamber and restrains flowing noise and cavitation by a simple structure without reducing hydraulic pressure which is usable at a position which needs oil supply by excessive back pressure. CONSTITUTION:On the peripheries of a valve body 1 and a valve disc 2 which displace their relative angles coaxially, there are disposed an oil supply chamber 5 communicating with a hydraulic source, oil delivery chambers 7a, 7b communicating with the positions which needs oil supply different from each other on both sides of the oil supply chamber 5, and an oil exhaust chamber 6 communicating with a position which needs oil exhaust, and there are also provided intermediate pressure chambers 8a, 8b are formed between the oil exhaust chamber 6 and oil delivery chambers 7a, 7b. A throttle part (pressure regulating throttles 12a, 12b) formed between the intermediate pressure chambers 8a, 8b and the oil exhaust chamber 6 is shaped to maintain a throttling opening degree roughly constant to a relative angle displacement, which occurs, exceeding a prescribed angle between the valve body 1 and the valve disc 2.</p> |
