When designing the structure design of the explosion fixture, manufacturers often focus on the shape and strength design of the explosion shell, but often ignore the fastener of the shell, the introduction device, transparent parts, suspension device, logo, etc. Design of other devices. Below, according to the requirements of GB3838.2-2000 "Explosive Gas Economic Electric Equipment: Detanic" D "", analyze some issues that need to be paid attention to in terms of structural design: There are two types: plane and stop. For the plane structure, the bolts not only have tight operations, but also keep the plane space. For the stop structure, when the explosion surface is only considered by the cylindrical part, the bolt only plays a fastening effect: when the cylindrical plus plane needs to be considered when the explosion surface needs to be considered, the bolt not only plays the fastener operation, but also ensures the gap between the plane. When attacking the thread directly on the shell, you must pay attention: the fastener threaded holes should not be passed through the shell shell, and the bottom of the threaded hole should be left with a balance of more than 3mm when passing through the shell; When exploding the shell, because the intensity of aluminum alloy is low, when the explosion shell is often opened (if the light source needs to be opened), the screw should not be used to attack the thread directly on the aluminum alloy case. Internal and external thread sleeves to increase the strength of the threaded holes and prevent it from failing due to the rotten teeth of the thread; the bolt that is not required to be opened during the replacement of the light source or repair, and it can be installed when it is out of the factory. Threaded holes, but you cannot use a fine teeth thread. Try to use thick tooth threads as much as possible, and there are sufficient tooth buckles to meet the tight requirements.