Patent ID: 6994648

Claim:
A fluid pressure control circuit, comprising: a fluid pressure device which is operated by a fluid pressure; a supply/discharge port through which a fluid is supplied/discharged; a communication port which is connected to the fluid pressure device through a communication passage; a control valve which controls the fluid pressure of the fluid pressure device by changing a flow amount of the fluid to be supplied to or to be discharged from the fluid pressure device through the communication port and the supply/discharge port, the flow amount of the fluid being changed by a change in a communication state between the communication port and the supply/discharge port according to movement of a valve element, the movement of the valve element being determined by a ratio between the fluid pressure to be introduced from the communication passage into a feedback chamber and, a predetermined pressure regulating load; a circulation regulating mechanism that is provided in the communication passage, and regulates circulation of the fluid; a first feedback chamber and a second feedback chamber which are provided in the control valve and which respectively apply the fluid pressure to the valve element in the same direction; a first feedback passage which introduces the fluid to the first feedback chamber from a portion that is between the circulation regulating mechanism and the control valve in the communication passage; and a second feedback passage which introduces the fluid to the second feedback chamber from a portion that is between the circulation regulating mechanism and the fluid pressure device in the communication passage.