| 摘要 |
<p>The invention concerns a watch case comprising a single-piece sapphire crystal (1), with peripheral walls (9) on its four sides. Two walls (9) rest on the middle (2) longitudinal edges. The end pieces (4) and (5) are engaged by means of their housing (21) on the crystal-middle assembly (1, 2) and maintain said parts adjusted and pressed by means of the screws (26) engaged in the bores (7) and threaded blind holes of the middle The bevels (27) ensure a regular engagement of the end pieces, the exact positioning of the crystal-middle assembly and the compression of the joint (19) when the screws (7) are screwed down.</p> |
