| 摘要 |
<p>A variable valve gear for an internal combustion engine, in which the working angle of a valve is accurately adjusted by a simple structure. The variable valve gear has a control pin (48) inserted in a pin insertion hole (38) formed in a control shaft (16), a shaft receiving hole (44) formed in a control member (46), and a adjustment pin (50) rotatably supported by the shaft receiving hole (44). Surface contact between the adjustment pin (50) and the control pin (48) prohibits relative rotation between the control shaft (16) and the control member (26). To adjust the working angle of the valve, the adjustment pin (50) is replaced with another having a different dimension B and then the distance A between the center line of the shaft receiving hole (44) and the center line of the control pin (48) is varied to vary the relative angle ? between the control shaft (16) and the control member (26). Because the adjustment pin (50) rotates in the shaft receiving hole (44), the adjustment pin (50) and the control pin (48) are maintained to be in surface contact with each other independent of the magnitude of the relative angle ?.</p> |
