| 摘要 |
The present invention provides a variable valve mechanism (V1) of an internal combustion engine, which includes a main arm (30) having at a rear end (33) thereof a supported portion (33a) that is continuously supported swingably by a support member (22) without floating upward, a sub arm (40) which has a tip end to which a roller (45) contacting a cam is rotatably attached, in which a center of the roller is located rearward of the pressing portion (32a) and forward of a swing center of the supported portion, which has a rear end that is swingably supported with respect to the main arm by a support pin (47), and in which a center of the support pin is located rearward of the center of the roller and forward of the swing center of the supported portion, and a switch pin (52) that is inserted in a central portion of the roller. |
