| 摘要 |
<p>PURPOSE: To miniaturize an oscillation driving machine of an oscillating bed by providing a stretcher part arranged so as to be oscillated on the upper side of a frame and interposing a pair of elastic members between the frame and the stretcher part symmetrically to the center line of the frame and the stretcher part set in a horizontal state. CONSTITUTION: The stretcher part 4 is mounted on a frame 1 with a caster 1a so as to be oscillated via a link mechanism for an oscillation guide consisting of a pair of lever bodies 10, 11 arranged so as to cross in X shape, and a hydraulic cylinder as the oscillation driving machine and a pair of coil springs 20, 21 are interposed between the frame 1 and the stretcher part 4. The lower and upper terminal parts of the coil springs 20, 21 are connected to pivotal shafts 10a, 11a and 11b, 10b via wires 23. Each wire is set in a slightly loosened state when the stretcher part 4 is set in the horizontal state, and it is formed in such a way that only the wire 23 on the ascending side of the stretcher part 4 is set in a strained state when the stretcher part 4 is inclined, for example, rightward by a certain angle (for example, 5 deg.).</p> |
