| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bed with floor part elevating mechanism which is free from danger even when a child or the like crawls into under the floor part. SOLUTION: A photoelectric switch 10 is placed on the opposite surface from the longitudinal direction of the bed in a receiving frame 4a of a main frame 4. By blocking off the light between a floodlight part 10a and a light receiving part 10b at the photoelectric switch 10, an action control signal will be given from a controller 9 to a direct acting driving mechanism 8 as there's an invading object. It is so set that either the floor part elevating mechanism 8 is stopped, or a main frame 4 is elevated immediately.</p> |
