Samsung patents massage chair with moving balls and magnetic controls

1. A massage apparatus comprising: a base frame; a seat frame coupled to the base frame to form a seating surface; and a massage module disposed at a rear of the seating surface to be movable between the base frame and the seat frame, wherein the massage module includes: a module base, a side frame coupled to the module base to be rotatable in forward and backward directions, a driving shaft disposed to pass through the side frame and rotate inside of the side frame, the driving shaft including a first driving shaft and a second driving shaft, a module moving shaft disposed to pass through the side frame and positioned between the first driving shaft and the second driving shaft, a bracket unit connected to the first driving shaft and the second driving shaft and configured to be movable according to rotation of the first driving shaft and the second driving shaft, and a massage ball unit including an electromagnet and a massage ball, the massage ball unit coupled to the bracket unit to advance and retreat based on movement of the bracket unit, and the massage ball being movable by the electromagnet, wherein the bracket unit includes a fixing bracket fixed in position with respect to the side frame, and configured so that the first driving shaft, the second driving shaft, and the module moving shaft pass through the fixing bracket, the first driving shaft is coupled with a first bearing disposed at an inclination relative to the first driving shaft so as to vary an angle of the bracket unit, the second driving shaft is coupled with a second bearing and is configured to reciprocate the bracket unit in a vertical direction by eccentric rotation, and the module moving shaft is configured to move the fixing bracket and the massage ball unit in a horizontal direction by rotation thereof.