| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an oil jet for injecting cooling oil at different two-stage flow rates in accordance with a pressure of the cooling oil.SOLUTION: In an oil jet 10, when a pressure of cooling oil flowing into an upstream flow passage 24 exceeds a first prescribed pressure, the cooling oil retained in a space in the upstream flow passage 24 formed by a ball 30 separated from a seat 23 passes through a minute gap (inside ofαandβ) between an inner peripheral wall of the upstream flow passage 24 and the ball 30, and flows into a downstream flow passage 26, and thereby, the cooling oil at a flow rate in accordance with the pressure of the cooling oil passing through the minute gap is injected from a nozzle 60. When the pressure of the cooling oil flowing into the upstream flow passage 24 exceeds a second prescribed pressure higher than the first prescribed pressure, the cooling oil retained in the upstream flow passage 24 is released from a gap (inside ofγ) formed between an inner peripheral wall of the downstream flow passage 26 and the ball 30, and flows into the downstream flow passage 26, and thereby, the cooling oil at a flow rate in accordance with the pressure of the cooling oil is injected from the nozzle 60.</p> |
