| 摘要 |
The objective of the present invention is to obtain a valve opening/closing timing control device that uses an aluminum material, has good phase control precision, and has a long belt service life. This valve opening/closing timing control device is equipped with: a driving-side rotating body that rotates synchronously with the crankshaft of an internal combustion engine; a driven-side rotating body that rotates integrally with a camshaft of the internal combustion engine, and is capable of rotating relative to the driving-side rotating body, in the interior of the driving-side rotating body; a fluid pressure chamber formed by the driving-side rotating body and the driven-side rotating body; and partition plates that partition the fluid pressure chamber into advance angle chambers and retard angle chambers. The driving-side rotating body is equipped with: an aluminum housing, which is equipped with a pulley that receives driving force of the crankshaft via a drive belt; and plates attached to at least one surface of the housing. Gaps through which fluid can flow out are provided between the housing and the plates. |
