发明名称 |
Sheet-like key top and its manufacturing method |
摘要 |
To make spherical shape of the terminal end of extruding part of a push-button switch to press a curved contact portion composed of a metal belleville spring and a resin film dome. In addition, the gate injecting mouth 4 for thermoplastic material 3 is opened in the side surface of the extruding part 2 or in the side projection made in a mold to inject the resin material in order to make molding of spherical shape of the terminal end of extruding part 2 of a push-button switch possible. By this structure, the present invention can provide a sheet-like key top having improved clicking touch and preventing break of a contact portion by residual stress.
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申请公布号 |
US6103346(A) |
申请公布日期 |
2000.08.15 |
申请号 |
US19980056295 |
申请日期 |
1998.04.07 |
申请人 |
POLYMATECH CO., LTD. |
发明人 |
NAKAJO, MASARU;OHGITANI, KENJI;KUDO, SATOSHI |
分类号 |
B29D99/00;B29K101/12;H01H11/00;H01H13/14;H01H13/48;(IPC1-7):B32B3/00;H01H1/10;B28B5/00 |
主分类号 |
B29D99/00 |
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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