| 摘要 |
<p>PURPOSE:To eliminate instability on straight traveling as well as inconvenience due to both front and rear wheel steering by automatically returning the rear wheel steering system to a neutral position by a shifting means at the time of medium- and low-speed traveling. CONSTITUTION:When a gear shift lever 15 is selectively operated from a low- speed stage of 1.2 gears to a high-speed stage of 3.4 gears, a cam plate 14 is moved interlocked with this operation, causing a rear wheel steering select lever 9 which is in a steering position of the opposite phase or the same phase of front and rear wheels, to be forcedly returned to a neutral position by means of a cam face 14a, and locked. A clutch 8 is held in a neutral position where it meshes with neither of gears 31, 32, while the projected part 12a of a fork 12 is engaged with the notch part 13a of a lock member 13 to lock a rear wheel steering device 5 in a straightly forwarding condition. Thereby, only front wheel steering can be carried out at the time of high-speed traveling, improving a straight traveling property while also remarkably improving the accompanying steering stability.</p> |
