Massage machine

A massage machine comprising:

• a seat unit on which a treatment subject person is configured to sit;
• a backrest unit that is configured to support a back of the person when sitting on the seat unit;
• a base that is disposed in front of the backrest unit;
• and
• a shoulder treatment mechanism that is attached to the base so as to perform a massage on a shoulder of the person in a state where the person sits on the seat unit,
• wherein the shoulder treatment mechanism includes:
• a drive unit that includes an output shaft attached to the base so as to be rotated by supplied power, the output shaft extends in an upward/downward direction,
• a first treatment device which is configured to press the shoulder from above, and
• a second treatment device,
• wherein when viewed along a width direction of the backrest unit, the second treatment device is located in front of the first treatment device,
• wherein when viewed along the width direction of the backrest unit, in accordance with rotation of the output shaft, the first treatment device and the second treatment device are configured to perform treatment on the shoulder in conjunction with each other so as to change a distance between the first treatment device and the second treatment device;
• wherein the shoulder treatment mechanism further includes:
• a swash plate cam which is obliquely attached to the output shaft, and
• a treatment device holder which is attached to the swash plate cam so as to oscillate in the upward/downward direction without being rotated together by rotation of the swash plate cam,
• wherein the first treatment device is integrally attached to the treatment device holder, and
• wherein the second treatment device is attached so that a base end side is oscillable around an oscillation axis extending along the width direction in which the treatment device holder is disposed, and a tip side performs the treatment on the shoulder.