An eccentric driving structure of a head holder of a massage device comprises a drive spindle axially mounted by an eccentric rotation disk to a top of a rotation assembly. A motor is used to directly or indirectly drive a shaft of the eccentric rotation disk in order to drive a rotary post that is rotatably mounted in a through hole by a rivet extending through a through bore thereof. The through hole is formed in a top surface of the eccentric rotation disk at an eccentric position. The rotary post is received and fixed in a connection bar arranged at an end of the massage head holder.一種按摩器之頭座偏心驅動結構,係在旋動構件的頂部設有由偏心轉盤軸置之驅動心軸,透過馬達直接或間接驅動偏心轉盤的軸桿,帶動以鉚釘穿設轉動旋柱之通孔樞組於穿孔上,且該穿孔乃置設在該偏心轉盤頂面的偏心位置,該轉動旋柱卡組至按摩頭座一端的連動柱內部定位。2...旋動構件21...傳動座211...軸孔22...偏心轉盤221...軸桿222...穿孔23...鉚釘24...轉動旋柱241...通孔242...剖溝243...彈性片244...卡扣凸條25...護圍板3...按摩頭座31...連動柱311...環槽32...連動槽321...帶動肋33...揉動面
