| 摘要 |
<p>The invention relates to a vandal-proof device for doors, which is intended primarily for spring doors. The inventive device comprises a one-piece body consisting of a flat C-, U- or similar-shaped sheet which is preferably made from a plastic or semi-rigid material. The aforementioned sheet comprises a flange which is hinged along the longitudinal part thereof, thereby creating a tension spring at the fold line. Moreover, the flat rear part of the sheet is provided with a double-sided adhesive which is used to fix said sheet to the exterior of the flat bar of the catch which is disposed on the door frame.</p> |
