Patent ID: 7955069

Claim:
A receiving jig for separating resin molded parts from a resin molded body by applying ultrasonic vibration in a condition that the resin molded body is interposed between the receiving jig and a horn, the resin molded body comprising: (a) one or more resin molded parts for the push button switch member, (b) a frame surrounding the outside of the resin molded parts, (c) one or more gates connecting a plurality of the resin molded parts to each other or to the frame and (d) one or more runners crossing the longitudinal direction of the gates, wherein the gates are connected at the back faces of the resin molded parts, and wherein the runners are connected to the gates on the same surfaces as the resin molded parts are connected to the gates and are connecting the opposing sides of the frame to each other; and the receiving jig including a cavity on the surface where the resin molded body is received and one or more projecting portions project from the bottom surface of the cavity, wherein the projecting portions support from the front faces of the resin molded parts at least one of following (1) a plurality of ends of the gates being connected at the back faces of the resin molded parts not to be painted with light shielding paint, and the gates connecting a plurality of resin molded parts to each other or the gates connecting between the frame surrounding the outside of the resin molded parts and the resin molded parts, (2) one or more runners crossing the longitudinal direction of the gates, the runners being connected to the gates on the same side of the surface where the resin molded parts are connected to the gates and the runners connecting the opposing sides of the frame to each other and (3) the frame, wherein part fitting concave portions are provided in the area where the projecting portions are not provided in the cavity, and the part fitting concave portions are provided so as to be opposite to the resin molded parts without contacting, wherein one or more concave portions are formed at the projecting portions so as to be depressed toward the bottom surface of the cavity at a position opposite to at least one of the gates, the runners and the frame, and wherein one or more elastic bodies, which make a larger impact on the gates than other parts of the resin bolded body by deformation when applying the ultrasonic vibration to the gates, are filled in at least a position opposite to the gates in the concave portions.