| 摘要 |
PURPOSE:To simplify the structure in the hydraulic draft gear of a buggy or the like by putting a rotary valve relatively-rotatable in a cylinder by which the oil receiver chamber of an inner tube and the oil chamber are intercommunicated with each other so as to expand and contract the passages on the press and extension sides by means of the relative rotation of inner and outer tubes. CONSTITUTION:When an outer tube 1 and an inner tube 2 perform relative rotation at the time of vehicle cornering, a rotary valve 22 rotates with respect to a value guide 25 through a suspension spring 5. Accordingly, the effective area of passages 27, 28 is reduced in compliance with a steering angle. A spring seat 33 advances in a screw portion 34 so as to increase the set load of a spring 32 and raise press side damping force. Therefore, rolling is prevented. With this arrangement, the structure can be simplified. |
