摘要 |
PROBLEM TO BE SOLVED: To prevent a mechanism for holding a fence part from being easily released by an inevitable accident in elevating/lowering type side fences which are bisected to independently cover a head side side surface and a foot side side surface. SOLUTION: The side surfaces of a back bottom 4a corresponding to the back and a lower half body side bottom 4b (from a knee bottom to a foot bottom) are respectively covered by a head side side fence 5 and foot side side fence 6. Operation levers 13 and 14 for operating stopper mechanisms 9 and 12 are covered by cover members 15 and 16 so as to prevent outer force from being given from a direction except the operating one in the configuration of the fences 5 and 6. |