| 摘要 |
<p>The safety headrest is operated by means of an E-magnetic lock controlled by sensors. The headrest has a fixed frame of hard plastic or metal which consists of several and preferably three movably interconnected parts (S1-S3), and several and preferably two E-magnet operated locks, and is stabilized by several and preferably two preferably pre-bent leaf springs. The headrest has a preformed lining piece (10) of preferably semi-hard foam which has the widest diameter at skull height or ear height (9), and the narrowest cavity diameter at cheek height (8a-b).</p> |
