| 摘要 |
<p>The automatic door closure has tension spring (3) enclosed in profile (1) element fixed to the top of the doorframe traverse. The spring and the door are connected by a cable (4) passing over a friction roller return (5). One end of the cable has an axle pin (6) that is housed in an oblique boring in the door so that the cable can be detached to stop the device working. The other end of the cable (9) is adjustable and is held by screw nut (10) and screw (11). The adjustment allows the spring tension to be adapted to the door closure force necessary.</p> |
