| 摘要 |
PURPOSE:To eliminate the mold release force from being added to the whole front wall when the molds are opened, and prevent a case from deforming by a method wherein a rib with a rising surface to restrict the position of an object to be stored is formed on the front wall of a box body constituting a case, and at the same time, a tilted surface is extended in the width direction of the rib. CONSTITUTION:A molded body A of a case, in which a tape cassette, etc., is stored, consists of a box body 12 which opens on one side, and a box shaped lid body 13 which opens or closes the opening of the box body 12. Respective sides of the box body 12 and lid body 13 are pivotally supported on to each other, and a space, in which a part of a tape cassette, etc., faces, is formed. In this case, on a front wall 15c of the box body 12, a rib 18 with a rising surface 18a to restrict the position of the tape cassette, etc., is formed. Also, a tilted surface 19, which is made to exist along the axial direction of the rib 18, and the wall thickness of which becomes less toward the opening, is formed. By this method, when molds are closed, the tilted surface 19 is made to extend in the mold opening direction, and therefore, when the molds are opened the mold release force to respective molds 3, 4, is eliminated from being added to the whole of the front wall 15c. |
