Press-fit check valve for hydraulic tensioner reservoir with weighed backflow

摘要

The press-fitting check valve for a hydraulic tensioner includes a retainer, a seat, a ball, and a spring. The check valve seat is press-fitted into the wall of the check valve counterbore of the hydraulic tensioner body. In some embodiments, the seat is cup-shaped to provide a predetermined level of pressure retention of the press-fit check valve. In some embodiments, the sheet includes a plurality of legs separated by leg openings. In some embodiments, a backflow path is provided through the press-fit check valve by a combination of leg openings and at least one backflow slot through the retainer flange. In some embodiments, the lip at the outer end of the check valve counterbore prevents the seat from retracting from the check valve counterbore. [Selection] Figure 6