Effect on the car safety hammer can play what safe?
Safety is the use of life-saving hammer conical tip, the contact area of the tip is very small, so when the hammer hit the glass, the contact point of the glass pressure considerable (somewhat similar with this principle, but also make the pushpin) car glass by external force in the big points caused slight cracking. As for toughened glass, cracking a little means the whole glass internal stress distribution has been destroyed, resulting in numerous spider crack at the moment, at this time as long as lightly with a hammer and then hit a few pieces of glass can be removed.
Also a lifesaving hammer is a safety hammer, installed in a closed cabin auxiliary tools to escape. It is generally installed in closed compartments such as cars, easy to take place. When a closed cabin such as a car is in a fire or falling into the water, it is easy to take out and smash the glass door to escape smoothly.
The safety hammer is small in size, but the key moment can play a very important role. In a vehicle accident, closed in the car, in the strong impact force, distorted door open, use the safety hammer smashed the window glass, can help the passengers to escape, the safety hammer is actually a "life-saving hammer".
