| 摘要 |
<p>The device, assembled of a stationary part (1) attached to the rear of the seat area and a rotary part (2) joined to the back part is provided with a locking element (5) with four elastic, radial positioned arms (5c), flanged at their outer ends (5e). Teeth (5b) located at the flanged ends engage with matching teeth of the inner surface of the stationary part (1). When the device is rotated, the locking element (5) is lifted and returns to its prior position automatically because of its elastic quality.</p> |
