| 摘要 |
PURPOSE:To eliminate possible corrosion of a biting section with a stable waterproofing construction, an easy packing device while reducing the working time by totally achieving the fixing and waterproofing of a back lid and the supporting of a module or a movement with a single packing. CONSTITUTION:A packing 7 is formed by injection molding of an elastic plastic such as Veilplene and made circular to receive a circular body. It can take another form to fit a body of another shape. The inner surface 7e of a vertical outer surrounding wall 7b can be formed in a taper to increase a fixing force of a back lid 8. A projection 7f provided on the bottom 7d of the packing 7 not only positions the back lid 8 but also serves to push the back lid 8 when it is removed. This also performs a function of absorbing a play or the like due to grouping of vertical dimensional errors in fixing of a movement and the like. |
