| 摘要 |
A hydraulic lash adjuster having a reduced number of elements, yet capable of suppressing air from infusing into a high-pressure chamber (28). A plunger (14) is slidably fitted in a body (13). A reservoir (24) is formed in the plunger (14). The plunger's head portion (19) is formed with a communication hole (25) for communicating its interior with its exterior. A high-pressure chamber (28) is formed in the body (13) and between the plunger's bottom (20) and the bottom of the body (13). An oil supply hole (40) is formed in the peripheral wall (21) of the plunger. A valve mechanism (42) is provided at the plunger's bottom (20), between the body (13) and the plunger (14) via a return spring (41). Provided on the inner periphery of the plunger (14) is an inclined area (51b), subjected to impingement of oil jet ji ejected from the oil supply hole (40) and serving as an impingement area, such that the impingement area (51b) is more inclined to fall in the direction of the ejected oil as the inclined area (51b) nears the plunger's head portion (19). |
