| 摘要 |
<p>The door leaf has an insulating board arranged between an external plate and an internal cover plate. The external plate directly or indirectly overlies and fixes an outer surface of a door leaf frame (1) at an outer side of the door leaf frame in an overlapping manner. Multiple springy retaining elements (12) are arranged between the door leaf frame and a door plate (2) for position-securing the door plate on the door leaf frame. Each retaining element includes a connection bridge coupling two retaining side pieces (13, 14).</p> |
