Massage device

A massage device comprising:

• an outer housing including an upper cover and a lower cover, wherein the upper cover has at least one opening, and the lower cover includes two sliding tracks and a plurality of supporting brackets;
• a massage seat having a guide slot and movably mounted on the sliding tracks;
• a first transmission mechanism mounted on the lower cover to drive the massage seat to move;
• a second transmission mechanism including a rotary axle and mounted on the massage seat;
• and
• at least one a massage unit mounted on the massage seat;
• the massage unit comprising a sway wheel assembled on the rotary axle, a sway arm having a circular hole in which the sway wheel is received, a positioning rod mounted between the sway arm and the guide slot, and a plurality of massage members provided on a top of the sway arm;
• the sway wheel including one slanted side surface;
• a circumferential surface of the hole of the sway arm extending an inner ridge corresponding to the sway wheel;
• wherein the first transmission mechanism drives the massage seat to reciprocate moving along the sliding track in the outer housing;
• the second transmission mechanism drives the rotary axle and the sway wheel in rotation, the slanted side surface of the rotating sway wheel presses against the inner ridge of the hole of the sway arm, thereby driving the sway arm to sway left and right along an axial direction of the rotary axle.