| 摘要 |
<p>An automatic transmission comprises a shift gear transmission system, and a shifting mechanism execution system. The shifting mechanism execution system comprises a manipulation device (9), a reverse action device (12), and a transmission shifting device (17), the reverse action device further comprises a control frame (13), a driving frame (10), a driven frame (11), and a spring (29), the driving frame is elastically connected to the driven frame through the spring, the driving frame and the driven frame are in axial slide fit with the control frame respectively, the slide travel of the driving frame is larger than the slide travel of the driven frame, and the middle point of the slide travel of the driving frame and the middle point of the slide travel of driven frame are on the same plane. The manipulation device can make the driving frame move so as to force the driven frame to reversely move, and the movement of the driven frame makes the transmission switching device force the shift gear transmission system to shift so as to change the speed.</p> |
