PROBLEM TO BE SOLVED: To provide a massage machine capable of reducing time and effort in manual maintenance by such a way that a restraint member permits a tilting gear to idle at the limit position of gearing between the tilting gear and a thread part, and the end of the thread and the tilting gear are not separated from each other to maintain them so as to be automatically returned to a normal gearing state.SOLUTION: A massage machine includes a structure having a restraint member for contacting a tilt gear 58a and a gear axis 58b thereof to restrain a drive mechanism 60 when the drive mechanism 60 excessively tilts against a base unit 53, and thus a relative movement range of the tilt gear 58a for a gear unit 67 of the drive mechanism side is limited within a position where the end of the gear unit 67 is kept in contact with the tilt gear 58a. With this configuration, even if the tilt gear 58a is wrongly tilted out of the normal range, it is stopped by the restraint member, and when the tilt gear 58a is rotated reversely to the present direction, the gearing between the tilt gear 58a and the gear unit 67 becomes a normal state at a start point of the gear of the end of the gear unit 67, and they are automatically returned to the normal position.COPYRIGHT: (C)2014,JPO&INPIT【課題】 傾動用歯車と歯部との噛合の限界位置で、拘束部材が傾動用歯車の空転を許容しつつ、歯部端部と傾動用歯車とを離れさせず正常な噛合状態まで自動復帰可能に維持して、人の手によるメンテナンスの手間を軽減できるマッサージ機を提供する。【解決手段】 ベース部53に対し駆動機構部60の傾動が過度に大きくなろうとする場合に、傾動用歯車58aやその歯車軸58bと接触して駆動機構部60を拘束する拘束部材を配設し、駆動機構部側の歯部67に対する傾動用歯車58aの相対移動範囲を、歯部67の端部と傾動用歯車58aとが接触を維持する位置までに制限することで、誤って傾動用歯車58aが正常範囲を越えて傾動しても拘束部材で停止させられ、さらに傾動用歯車58aをそれまでと逆向きに回転させると、歯部67端部の歯を起点として傾動用歯車58aと歯部67との噛合いが正常に行われ、正しい位置に自動復帰させられる。【選択図】 図9
