The correct use of safety hammers is: hand-held plastic handle, the sharp point of the head of the hammer vertical point of view against the window glass. In general, the middle of the most solid glass, four corners and the edge is weak. Therefore, the use of safety hammer when you want to punch the four corners of the window and the edge, and then you can put the whole glass out of the window.
Buses have safety hammers and fire extinguishers, emergency door to increase the obvious signs, in critical circumstances we do not forget to use these things to escape. Would you use a safety hammer on a bus?
1 first we come to know the safety hammer on the bus
2 Because the contact area of the tip is small, the pressure of the contact point against the glass (not the pressure, but the pressure per unit area) is quite large when the glass is smashed with a hammer
3 in case of emergency, directly won the safety hammer, with the tip of the part of the high-point hit the glass
Note: the middle part of the tempered glass is the most solid, the four corners and the edge is the weakest, especially the upper edge of the middle of the place. When you are in danger on the bus, you need to jump the window, you should use a safety hammer to hit the glass above the edge of the middle of the place, that place is the most easy to break.
When you are in danger on the bus, you need to jump the window, you should use a safety hammer to hit the glass above the edge of the middle of the place, that place is the most easy to break.
Proper use of safety hammer:
1, pick up the safety hammer, hammer the four corners of the tempered glass, do not hit the middle part, Safety Hammer the middle part of the most solid.
2, because some of the glass is a foil, so the glass will not fall off immediately after the broken, we can kick with a kick open.
3, glass off after the timely and orderly jump out of the body, Safety Hammer transferred to a safe place.
1, the key is to use the safety hammer tip knocked four corners, knocking the middle is not enough.
2, the test, with the key, high heels heel (except metal heel) are not broken glass tempered.
Add: hit the glass with the safety of the four corners and edges, Safety Hammer and then the whole glass out of the window.
How to hit the glass:
One is knocking around the window, because the windows of the middle of the tempered glass the most solid, the four corners and the edge of the weakest, if the passengers hit the middle part of the window, the window damage is relatively small, breakthrough time is slow, is not conducive to passengers fast Fled
Second, in the window glass on the percussion, glass force surface is small, so can quickly break the glass. If you hit a hammer with a hammer, uneven force, Safety Hammer tempered glass is not easy to break.
Note: The above methods for the bus, motor car is different, broken window is also different