Keyboard switch |
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| 申请号 | JP32032888 | 申请日 | 1988-12-19 | 公开(公告)号 | JPH01209616A | 公开(公告)日 | 1989-08-23 |
| 申请人 |
Hewlett Packard Co |
发明人 | BURAIAN JII SUPURETSUDOBARII; | ||||
| 摘要 | PURPOSE: To improve a venting method of a keyboard by letting air in a dome move into a channel when the dome is pressed. CONSTITUTION: When a dome is pushed down by finger pressure, a conductive layer 22 on the back side of the dome makes contact with a switch area of fingers 17 and 17A to be coupled together on a printed circuit. At the same time, air present under the dome is let pass through an opening 14A to enter a cannel 14, and hence the air can be dispersed through a channel system. Then a spacer seat 18 is provided to increase a travelling distance when the dome is crushed. This creates a good 'feeling' in n user who operates a key. COPYRIGHT: (C)1989,JPO |
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| 权利要求 | |||||||
| 说明书全文 | |||||||
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