| 摘要 |
<p>The key has two adjacent rockers. After being pressed they are returned to and held in their original position by spring force. A common spring (1) for both rockers is made of a metal sheet and consists of two U-shaped elements connected by a link (4). A further spring (5) about mid-way between the two return springs (2, 3) holds the key in the equipment. The link connects the return springs and the approximately U-shaped retaining spring (5) at the end of the leg of the U.</p> |
