| 摘要 |
PURPOSE:To make a small-sized and lightweight cam plate part including a housing in a rear wheel steering device for steering rear wheels in response to the rotation of a cam plate. CONSTITUTION:A cam shaft 75 is displaced in the axial direction in response to the rotation of a cam plate 81, and with this displacement, an oil pressure copying mechanism steers rear wheels. The cam shaft 75 is supported at a base part 75a thereof freely to slide on the inner periphery of a housing 61, and an arm part 75b is extended from a part of the tip surface of the base part 75a onto the surface of a cam channel 81a side of the cam plate 81. The cam plate 81 is formed into non-circular, and since a radial distance from the peripheral surface 81b of the cam plate 81 to the cam channel 81a is formed nearly equal over the whole periphery, the cam plate 81 is formed compact, and an arm part 75c of the cam shaft 75 is shortened. |
