| 摘要 |
<p>A flow rate regulation valve (70) provided at a primary pulley which is a rotating body. The flow rate regulation valve (70) has a first port (71), a second port (72), an operation fluid flow path (73) formed between the first port (71) and the second port (72) and allowing operation oil to flow through it, a check valve (74) placed in the operation fluid flow path (73) and permitting the flow in the flow path (73), from a second port-side flow path (73b) toward a first port-side flow path (73a), and a valve opening regulation section (guide member (75), spool (76), cylinder (77), and drive pressure chamber (79)) placed on the second port side of the check valve (74), forcibly opening the check valve (74) when the operation oil is discharged from the first port (71) to the second port (72), and increasing flow path resistance of the second port-side flow path (73b) such that the smaller the degree of opening of the check valve (74), the greater the flow path resistance. Excessive discharge of the operation fluid at the initial stage of valve opening can be restricted. ® KIPO & WIPO 2009</p> |
