| 摘要 |
<p>Position mechanism especially of the dental seat included backrest (1) and attached board (2) of the seat and having the driving unit with telescope sliding mechanism (3). Two-bladed lever is fixed on the console (9) with the pin and it is pivotally mounted to the board (2) of the seat, at the second end is mounted to the sliding line, whereby next to sliding lead is pivotally mounted backrest (1) on the console (9) with the pin.</p> |
