| 摘要 |
PROBLEM TO BE SOLVED: To prevent an output arm from flapping during a standstill without causing sliding friction.SOLUTION: A variable valve mechanism 9 structured to include a driving cam 10, an input arm 30 driven by the driving cam 10, an output arm 40, and changeover mechanisms 50 and 60 for changing over a driving state in which the output arm 40 is coupled with the input arm 30 to drive a valve 7 by the output arm 40 and a standstill state in which the coupling is canceled to suspend the driving of the valve 7 is equipped with a non-sliding hold mechanism 80 which comes into abutment with the output arm 40 during the standstill state without sliding from a swinging direction side opposite to the side of the valve 7 to prevent it from flapping. |
