| 摘要 |
PURPOSE:To enable natural four-wheel steering without a feeling of physical disorder by providing a cam groove on one of the end portion of a long lever connected to an input shaft and the end portion of a short lever connected to an output shaft, and providing a flexible driven arm on the other thereof, and engaging a pin connected to the forward end of the driven arm with the cam groove. CONSTITUTION:Even if an input lever 61 of an input shaft 14 is turned in connection with the handle operation, a pin 64 mounted on the forward end of a driven am 63 id just moved along a cam groove 65a, and output lever 65 of an output shaft 9 is not turned. When the turning angle of the input lever 61 exceeds a designated value, the pin 64 of the driven arm 63 is brought into contact with the end edge 65b of the cam groove 65a, and the output lever 65 is drawn by the pin 64 and turned with the flexion of the driven arm 63. The driven arm 63 is bent with respect to the input lever 61, so that the output lever 65 is slowly started behind input lever 61, and the rate of change of the turning angle of the output lever 65 gradually approaches that of the input lever 61. Accordingly, natural four-wheel steering without a sudden change can be accomplished. |
