| 摘要 |
PROBLEM TO BE SOLVED: To artificially operate a work of a treatment piece and perform a suitable massage according to a request from a treated person, by providing a driving portion for driving the treatment piece with a servo mechanism that operates the treatment piece following variation of output from an operating portion. SOLUTION: This massage machine 1 is provided with treatment pieces 5 projected upward from a housing placed on a floor. A driving portion for driving the treatment piece 5 for massage is constituted by providing three expandable bellows-shaped air cells (air actuator) 15a-15c between an oscillation plate 11 and an air cell base 17. For example, when one air cell 15b expands, the treatment pieces 5 corresponding to that position exits to the treated person side. When both air cells 15a, 15b simultaneously expand or shrink, both treatment pieces 5 are simultaneously proceeded or backed. Each of air cells 15a-15c operate an air guide valve 21 constituting a servo mechanism for expansion or shrinkage according to a moving amount of each wire 39.
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