Safety hammer: An auxiliary escape tool in a closed compartment. It is generally installed in the car and other closed cabin easily accessible place, in the event of a fire in the car or the car fell into the water medium emergency, you can easily remove and smashed the glass doors to escape successfully.
Usage: Mainly used for breaking glass in emergency situations, knocking glass with a hammer, and cutting the tail blade of the handle to escape the seat belt.
Scope: Mainly used in bus, passenger vehicles, trains and other vehicle configuration.
Usage: The safety hammer is mainly used for its cone-shaped tip, because the contact area of the tip is very small, so when the hammer smashed the glass, the contact point on the glass pressure (not pressure, but the pressure on the unit area) is quite large, this is similar to the principle of Pushpin, the film is very easy to be punctured, And the glass at that point is subjected to a very large external force to produce a slight cracking, for tempered glass, a little bit of cracking means that the entire glass inside the stress distribution has been destroyed, resulting in an instant countless web-like cracks, at this point, as long as the gently hit with a hammer a few pieces of glass can be removed.
In addition, the middle part of the tempered glass is the most solid, and the corners and edges are the weakest. The best way is to hit the edges and corners of the glass with a safety hammer, especially in the middle of the top edge of the glass, and once the glass cracks, it's easy to smash the whole piece of glass.
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