Dust-proof device of key operation part of numerical control device |
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| 申请号 | JP12472080 | 申请日 | 1980-09-10 | 公开(公告)号 | JPS5750042A | 公开(公告)日 | 1982-03-24 |
| 申请人 | Richo Denshi Kogyo Kk; | 发明人 | HORIE YUTAKA; NISHIKAWA KENJI; | ||||
| 摘要 | PURPOSE:To prevent chips of a substance to be worked, cutting oil, etc. from going in from a gap between a through-hole of a front panel and a key switch, of a key operation part of a numerical control device. CONSTITUTION:A dust-proof mask 5 being flexible and like a transparent film, such as urethane, etc., which has been molded so as to cover operating parts 3 such as a key switch, etc. is stuck to a front panel 1, and after that, this front panel is fixed to a printed plate 2 with screws. According to this constitution, it does not occur that chips of a substance to be worked, cutting oil, etc. stick to the printed plate and do not cause a function failure of a control device. Furthermore, the dust-proof mask is replaced easily by a user depending on the extent of dirt, and a character of the key top is always maintained in a state that it is distinct and easy to see. | ||||||
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| 说明书全文 | |||||||
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