A linking operation mechanism comprising: a first operation member provided to a first base portion so as to revolve around a first pivot point as a center between an operating position and a waiting position; a second operation member provided to a second base portion so as to revolve around a second pivot point as a center between an operating position and a waiting position; a wire arranged between the first operation member and the second operation member so that the first operation member and the second operation member work together between the operating position and the waiting position; and a spring member giving tensile force to the wire so that both of the first operation member and the second operation member are driven toward either the operating position or the waiting position, characterized in that the linking operation mechanism further comprises a wire joining member interposed between the first operation member and one end portion of the wire, fitted to the first operation member so as to transfer in a direction approaching to and separating from the first pivot point, and joined to the one end portion of the wire so as to transfer integrally relative to the first operation member, and the first base portion is provided with a leading portion having: concave portions (16a, 16b) contacting with the wire joining member by accepting the tensile force of the wire affecting the wire joining member, to which when the first operation member is situated at the operating position and the waiting position the wire joining member is engaged; and a convex portion located between the concave portions (16a, 16b) so as to be ridden over the convex portion more far away from the first pivot point than a position where the wire joining portion is engaged to the concave portions (16a, 16b). a first operation member provided to a first base portion so as to revolve around a first pivot point as a center between an operating position and a waiting position; a second operation member provided to a second base portion so as to revolve around a second pivot point as a center between an operating position and a waiting position; a wire arranged between the first operation member and the second operation member so that the first operation member and the second operation member work together between the operating position and the waiting position; and a spring member giving tensile force to the wire so that both of the first operation member and the second operation member are driven toward either the operating position or the waiting position, characterized in that the linking operation mechanism further comprises a wire joining member interposed between the first operation member and one end portion of the wire, fitted to the first operation member so as to transfer in a direction approaching to and separating from the first pivot point, and joined to the one end portion of the wire so as to transfer integrally relative to the first operation member, and the first base portion is provided with a leading portion having: concave portions (16a, 16b) contacting with the wire joining member by accepting the tensile force of the wire affecting the wire joining member, to which when the first operation member is situated at the operating position and the waiting position the wire joining member is engaged; and a convex portion located between the concave portions (16a, 16b) so as to be ridden over the convex portion more far away from the first pivot point than a position where the wire joining portion is engaged to the concave portions (16a, 16b). concave portions (16a, 16b) contacting with the wire joining member by accepting the tensile force of the wire affecting the wire joining member, to which when the first operation member is situated at the operating position and the waiting position the wire joining member is engaged; and a convex portion located between the concave portions (16a, 16b) so as to be ridden over the convex portion more far away from the first pivot point than a position where the wire joining portion is engaged to the concave portions (16a, 16b).