To provide a posture holding joint device by which a worker can surely hold a posture at an exact position, and a posture holding support device using the same.SOLUTION: This posture holding joint device for connecting one connecting member and the other connecting member to each other so as to be turntable, and setting both the members to working states that the members are held at arbitrary turning positions and release states that the members are freely turntable comprises: a working part 101 connected to one connecting member； a turning body 102 connected to the other connecting member； and a turning shaft part 104 for pivoting the turning body 102 to the working part 101 so as to be freely turntable. The working part 101 comprises a pressure-contact member 110 attached to an internal peripheral face of the turning body 102 so as to be contactable therewith, a working member for operating the pressure-contact member 110 so as to pressure-contact with the internal peripheral face of the turning body 102, and a drive part 112 for operating the working member 111 so as to be set to the working state by making the pressure-contact member 110 pressure-contact with the internal peripheral face of the turning body 102.SELECTED DRAWING: Figure 5【課題】本発明は、作業者が正確な位置で確実に姿勢を保持することが可能となる姿勢保持用関節装置及びそれを用いた姿勢保持支援装置を提供することを目的とするものである。【解決手段】本発明に係る姿勢保持用関節装置は、一方の連結部材及び他方の連結部材を互いに回動可能に連結するとともに両者を任意の回動角度位置で保持する作動状態及び回動自在な解除状態に設定する姿勢保持用関節装置であって、一方の連結部材に接続される作動部１０１と、他方の連結部材に接続される回動体１０２と、回動体１０２を作動部１０１に回動自在に軸支する回動軸部１０４とを備え、作動部１０１は、回動体１０２の内周面に接触可能に取り付けられた圧接部材１１０と、圧接部材１１０を回動体１０２の内周面に圧接するように動作させる作動部材と、圧接部材１１０を回動体１０２の内周面に圧接させて作動状態に設定するように作動部材１１１を動作させる駆動部１１２とを備えている。【選択図】図５
