Arm massage device for massage chair

The utility model discloses an arm massage device for a massage chair. The massage chair comprises a massage chair body, two sides of the massage chair body are provided with a pair of armrests whichare symmetrically arranged; grooves are formed in the opposite side walls of the pair of armrests; an arm massage device is fixedly arranged in the groove; the arm massage device comprises a linear motor which is hung upside down and fixed to the top of the groove, a sliding block is arranged on the linear motor in a sliding mode, a massager is further fixedly installed on the sliding block, and the massager comprises a motor, a coupler, a small bevel gear, a large bevel gear, a straight gear, a front cover, a rear cover, a feeding device, a massage head and a fixing block. According to the utility model, other functional fields of the massage chair are developed; the massage chair is more comprehensive in function, adopts gear engagement transmission, is tighter in transmission precision,is smaller in size of a t