| 摘要 |
PROBLEM TO BE SOLVED: To provide a rear wheel steering device which can suppress the generation of wobbling in a rotating direction caused by the wear of a whirl-stop mechanism part which whirl-stops a rear wheel steering shaft.SOLUTION: There are arranged drive parts 17L, 17R which independently move rods 16L, 16R which are whirl-stopped by a whirl-stop mechanism 38, and steer one of a pair of right and left rear wheels 3L, 3R by moving to an axial direction. The whirl-stop mechanism 38 of the rods 16L, 16R is rotatably supported by incorporating a stopper pin 45 into a pin insertion hole 46 in a radial direction which is formed at a housing 18, the rods 16L, 16R are whirl-stopped by inserting a tip of the stopper pin 45 which faces the inside of the housing 18 into an axially-long whirl-stop recess 44 formed at an external periphery of the rods 16L, 16R, the stopper pin 45 is contact-rotated by the contact of the whirl-stop recess 44 with a side face when moving the rods 16L, 16R to the axial direction by the drive of the drive parts 17L, 17R, the wear of a contact part between the side face of the whirl-stop recess 44 and the stopper pin 45 is suppressed, and the generation of wobbling in a rotating direction is prevented. |
