| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bed equipped with a height-adjusting mechanism, which does not require a large space when moved, and of which the vertical motion is facile. SOLUTION: A link A mechanism A is provided on the inside of a lower frame 1 of this bed. The link A mechanism A comprises a rail 2, a link A6, a rotating shaft 8, a stay 9, and an arm 11. In this case, the rail 2 has a roller 4 which is arranged in a manner to be slidable on the rail surface. One end of the link A6 is turnably connected to the roller 4, and the other end is turnably connected to one end of an upper frame 5. The rotating shaft 8 is rotatably bridged between a lower frame 1 and a confronted lower frame 1. One end of the stay 9 is fixed to the rotating shaft 8, and the other end is turnably connected to the link A6. One end of the arm 11 is fixed to the rotating shaft 8, and the other end is turnably connected to an actuator 10. A link B mechanism B comprises the same rail 2 as the link A mechanism, and a link B12. In this case, the rail 2 of the link B mechanism B is provided to be away from the rail location of the link A mechanism. One end of the link B12 is turnably connected to the roller 4, and the other end is turnably connected to the other end of the upper frame 5.</p> |
