To provide a mechanism unit of a massage machine, capable of enhancing reliability and stability in an actuation related to massage.SOLUTION: Both of end parts of an inclination shaft 22 for supporting a drive part 50 and a revolving shaft 23 related to an inclination of the drive part 50 are supported by two independent base frames 25, 26. Sizes in a direction perpendicular to the inclination shaft 22 and the revolving shaft 23 and also in a direction corresponding to a front and rear direction of a backrest part in the respective base frames 25, 26 are allowed to be larger than sizes in a direction in parallel with the inclination shaft 22 and the revolving shaft 23. Then, even in a state where force to change mutual position relation of the inclination shaft 22 and the revolving shaft 23 is applied to the base frames 25, 26 from the drive part 50, position relation of the inclination shaft 22 and the revolving shaft 23 is kept without deforming the base frames. Thus, connection and linkage of respective mechanism components are kept in an appropriate state and abnormal force is not applied to the respective components, so as to prevent damage of the components and also to enhance reliability and stability in an actuation of a massage machine.SELECTED DRAWING: Figure 3
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