< Topic >When it makes the back rest section of the chair keep, arrival the massage machine for the chair which massages the back of the user which sits down is offered to the chair.Solutions1st lifting and holding body 3 is provided for one destal of the time as tune unrestricted long shaku body 2, when it provides 2nd lifting and holding body 4 for the other end, it provides the massage Drive feature 6 which makes massage means face 8 on surface side in aforementioned 1st lifting and holding body, 3 crosses in the crest of the back rest section of the chair and spending to hang aforementioned long shaku body 2, way the 1st lifting and holding body 3 which is located on front side and rear side of the back rest section and 2nd lifting and holding body 4 it keeps in balance state, in aforementioned 2nd lifting and holding body 4 plumb bob means17 is provided.< Choice figure >Drawing 1【課題】椅子の背もたれ部に吊持させた状態で、椅子に着座したユーザの背中をマッサージする椅子用マッサージ機を提供する。【解決手段】折曲自在な長尺体2の一端部に第1吊持体3を備えると共に他端部に第2吊持体4を備え、表面側にマッサージ手段8を臨ませたマッサージ駆動機構6を前記第1吊持体3に設けており、椅子の背もたれ部の頂縁に交差して前記長尺体2を吊り掛けたとき、背もたれ部の正面側と背面側に位置する第1吊持体3と第2吊持体4が均衡状態で吊持されるように、前記第2吊持体4に錘手段17を設けている。【選択図】図1