Method for manufacturing a folded door leaf and door leaf

摘要

The method involves folding two parallel edge areas at appropriate parallel edges of a box metal sheet (12) and a lid metal sheet (14). An edge portion (54) of the box metal sheet and the lid metal sheet is folded. A spring (72) is inserted into a receiving groove (58) along the displacement direction. The box metal sheet and the lid metal sheet are connected with each other through interlocking hook portions of rear gripping elements, until the spring is connected with the receiving groove. An independent claim is included for door leaf.