1．撞锁防止自撞法。将锁舌倒角的斜面上用挫刀挫成一个“平台”。这样，外出必须用钥匙才能将门关上，迫使用户一定要带上钥匙出门。如果从里边关房门，只要移动一下把手就可以了。2．家具陈列设计法。先丈量出居室面积，按比例缩小，画在纸上。然后将家具按同样比例缩小．画 1. Collision to prevent self-collision law. The chamfer of the chamfering tongue was set as a “platform” with a razor blade. In this way, you must use the key to go out to close the door, forcing the user must bring the key to go out. If you close the door from inside, just move the handle on it. 2. Furniture display design method. First measure the room area, scaled down, painted on paper. Then reduce the same proportion of furniture. painting