| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an oil pump device which can reduce the size of a relief valve while reducing energy (work) for discharging oil by reducing the discharge pressure of the oil and a discharge amount.SOLUTION: This oil pump device 100 comprises: an oil pump main body 10 which discharges oil from a main discharge port 4 and a sub-discharge port 5 which are independently arranged; a main oil passage 6 connected to the main discharge port 4; a sub-oil passage 7 connected to the sub-discharge port 5; a single relief oil passage 8; and a relief valve 20. The relief valve 20 includes a valve body 21 which forms a single valve chamber 24 in a valve body accommodation part 22, and performs the switching of a communication state between the sub-oil passage 7 and the main oil passage 6 and a non-communication state, and the switching of a communication state between the sub-oil passage 7 and the relief oil passage 8 and a non-communication state by moving in the valve body accommodation part 22 according to the pressure of discharged oil.</p> |
