| 摘要 |
<p>The present invention relates to a servomechanism (A) used to open a lock (B), comprising an electrical motor (100), on the drive shaft (101) of which a pinion (102) is mounted, a gear (106) splined on a worm (107) helically coupled with a slide (108), a first return spring (109) inserted outside worm (107), an idle tooth wheel (103) interposed between said pinion (102) and gear (106), and mounted on a pin (104) being an integral part of a crank (105) revolvingly mounted on drive shaft (101).</p> |
