| 摘要 |
PURPOSE:To hold a side shelf in the lower part of a back bed by turning it in the outside direction after holding it at an initial supporting angle by rotating a side fence supporting shaft by a connecting arm in reverse to the rising direction by a rising angle portion of the back bed. CONSTITUTION:Back raising is executed by actuating a bed part raising/laying mechanism 4. When a back bed 6a is raised, a working arm 13a in a side shelf supporting shaft on the lower face of the back bed 6a is drawn in and displaced by a connecting arm 16 attached to a main frame 3, and the side shelf supporting shaft rotates in the reverse direction to the raising direction by a rising arm portion of the back bed 6a. Accordingly, a turning detaining/ supporting part 14 being a fitting part to the side shelf supporting shaft ascends only by raising the back bed 6a, and a side shelf 15 is held in an initial state, that is, in a roughly horizontal state. Also, when such a side shelf 15 is turned in the outside direction of the back bed 6a, an action of a turning detaining means is released, the side shelf 15 is rotated and displaced by a prescribed angle, and projecting parts 17, 18 are engaged again, by which the side shelf 15 becomes a state that it is directed to the lower part of the back bed 6a and held. |
