Abstract: An artificial limb joint device which has sufficient strength as a joint, can efficiently absorb a torsion load received from a body during walking, and can restore its original shape immediately after absorption and can adjust angle continuously. The artificial limb joint device comprising body protecting members which adjoin to each other, one of which can turn with respect to the other body protecting member, wherein the body protecting members are made from a material having flexibility, a support member for rotatably supporting the adjoining side end portion of the one body protecting member is placed on the adjoining side end portion of the other body protecting member, a stopper member which contacts a contact portion provided in the adjoining side end portion of the one body protecting member to limit the rotation angle of the body protecting member is installed on the support member, and the position of the stopper member can be changed along the rotation locus of the contact portion and controlled.

Abstract: An artificial limb joint device for hinging adjoining body protecting members to turn on an axis perpendicular to the longitudinal axes of the body protecting members. The limb joint device comprises: a drive disc; a driven disc; a joint pin extending through the individual centers of the drive disc and the driven disc. The drive disc is detachably attached to one of the adjoining body protecting members and includes an outer flange, and an inner flange disposed radially inside of the outer flange and defining an annular groove in the end face of the drive disc together with the outer flange. The outer flange is formed with a through hole extending in a tangential direction of the annular groove. The driven disc is detachably attached to the other of the body protecting members and formed with such a raised segment at the end face confronting the drive disc as to engage in a sliding manner with the annular groove of the drive disc.