| 摘要 |
PURPOSE: To provide a swing arm smoothly sliding when a vehicle receiving bed is positioned at a vehicular lift point, and being prevented from sliding at the time of lifting up. CONSTITUTION: Recessed portions 9, 9 are respectively formed on a tip end bottom surface of a lift arm 1a and a base end upper surface of a slide arm 1b. Elastic elements 10, 10 and low frictional sliding members 11, 11 are buried in the recessed forming portions 9, 9. The low frictional sliding members 11, 11 are attached so as to be pressed in the recessed portions 9, 9 in a state that surfaces of the low frictional sliding member 11, 11 are projected out from the recessed portions 9, 9 under load conditions, and so as to be automatically returned at positions outside of the recessed portions 9, 9 under no-load conditions. On an base end bottom surface of the slide arm 1a, a low frictional sliding member 11a is attached in a state that a surface of the low frictional sliding member 11a is exposed from the level of the lower end surface.
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