钢管折叠门及铰链式插销设计

The Design of Steel -- pipe Pull -- down Door and Hinge-- type latch

介绍了一种钢管折叠门及铰链式插销的设计。该设计解决了门关闭时整体刚度差、门打开时存在 死点的问题，可借助铰链式插销锁紧折叠门。

This article introduce a design of steel --pipe Pull --down door and hinge--type latch. This design preferably solves the technical problems when do designing the door in pre--design, such as integral rigidity being not very good, exciting fatal points when opening the door and so on. We can conveniently lock the pull--down doors by the hinge--type latch. The effect has been proved well by trial--manufacture and putting to use.