| 摘要 |
PURPOSE:To simplify the shapes of a fitting and a coupling part and to facilitate molding and assembling by forming a groove and a projection so that a core holder and a supporting member engage with each other, and providing a recessed and a projected part for mutual coupling. CONSTITUTION:The bevel part 12a at one terminal of the groove 12 of the supporting member 11 is inserted into the guide 15 of the core holder 16 and top surface of the supporting member 11 is pressed down toward the guide 15. The groove 12 of the supporting member 11 is guided by the guide 15 and the projection 14 while superposed upon the recessed part 16a of the core holder 16 enters to the recessed part 18 by spreading a hook part 14b out by elastic deformation to engage the step part of the recessed part 16a when the hook part 14b returns to its original shape by the elasticity of the projection. In this case, only slight pressing force is applied to the top surface of the core support 11 because the projection 14 deforms elastically without the smallest strain, and the supporting member 11 is detached easily when necessary. |
