紧急避险子母门的设计与实现

针对现有金属进户门设计技术存在的缺陷，提供一种使人们在地震等灾难来临时迅速逃生的紧急避险门。经市场调研、比较分析确定了设计方案，并进行了施工图纸设计、样品生产，测试结果表明：通过子、母门结构变化，既满足了门的安全性功能，又满足了门的紧急避险出口功能。产品应用性强，市场前景广阔。

Design and Implementation of an Emergency Primary-ang-Secondary Door

Compared with the existing form of metel entry door in the market, this invention provides an emergency primary-and-secondary door which allows people to escape from the house quickly and safely if earthquake or other natrual disaster happens. This design has been blueprinted, and samples have been manufactured after market investigation and analysis. Test results show that:with changing the structure and connections, the primary-and-secondary door can guaranttee its security and high utility, so the prospect is bright.