发明名称 |
METHOD OF FIXING PIPE OF A WRIST WATCH CASE |
摘要 |
<p>In the first aspect of the invention, there is provided a wristwatch case having a pipe joined and fixed thereto, the wristwatch case and the pipe having substantially no junction interface. A method of fixing a pipe to a wrist watch case for obtaining this structure comprises the steps of providing a wristwatch case with a through-hole; press fitting a pipe exhibiting a through-hole/pipe press-fit overlap width (namely, outside diameter of the pipe minus diameter of the through-hole) of greater than 0 mm in the through-hole; and heating the wristwatch case after the press fitting. In the second aspect of the invention, there is provided a wristwatch case having a pipe, the wristwatch case and the pipe joined and fixed to each other through a diffusion layer. A method of fixing a pipe to a wristwatch case for obtaining this structure comprises the steps of providing a wristwatch case with a through-hole; press fitting a pipe having its surface furnished with a metallic coating, which exhibits a through-hole/pipe press-fit overlap width (namely, outside diameter of the pipe having its surface furnished with a metallic coating minus diameter of the through-hole) of not less than 0 mm, in the through-hole; and heating the wristwatch case after the press fitting in vacuum or a reducing gas. <IMAGE></p> |
申请公布号 |
EP1241539(B1) |
申请公布日期 |
2011.09.28 |
申请号 |
EP20010943878 |
申请日期 |
2001.06.29 |
申请人 |
CITIZEN HOLDINGS CO., LTD. |
发明人 |
UCHIDA, HITOSHI;FUJII, KOUJI;SATOH, JUNJI |
分类号 |
G04B37/06;B23K20/00;B23K20/14;B23K20/16;G04B37/08;G04B37/22;G04D3/00 |
主分类号 |
G04B37/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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