| 摘要 |
PURPOSE: A gas cylinder is provided to extend the height of a seat with multistage way by moving an outer container body, which moves a spindle up and down, up and down against a supporting member. CONSTITUTION: A gas cylinder has a height control unit (300). An outer container body (200) is combined with a supporting member (100) having separation height in the state the gas cylinder is supported on the bottom surface so that the height is adjusted by the moving up and down an inner spindle (20). The height control unit adjusts the height of the outer container body at the binding position of the supporting member and the outer container body. The height control unit, which is combined with the supporting member, is an outer container body guider guiding an up-and-down movement of the outer container body and fixing the outer container body selectively. |
