| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a massage machine, even when a state of a person undergoing a therapy on a backrest part is changed, capable of executing a massaging therapy by constantly and appropriately adjusting the therapy strength.SOLUTION: The massage machine includes a seat part, a backrest part, and massage balls inside the backrest part and a drive mechanism part for operating them that are integrally provided, and can adjust a protrusion amount of the massage balls protruding to the side of the person undergoing the therapy. In a state where the massage balls are operated, the massage machine can increase the protrusion amount to the person undergoing the therapy until an operation speed of the massage balls reaches a target value.</p> |
