Vehicle Collision Buffer Device (Movable Bumper)

Strike oscillograms to compare

1: The foreign car factory accelerates the deceleration oscillogram of the rule

(1)

Fig. (1) Adopted the defeated and dispersed type car body structure and struck the oscillogram appeared by car world at present, the sensor is on the car body structure or the cement mound, can find out in the picture that belong to the striking of motive force from 0 seconds to 0.07 seconds, also called the main seismic zone, the car bodies of four times absorb shaking and defeated dispersedly, shake strength in 0.07 seconds altogether (destroy strength) Biggest, it is out of shape that the car body is born and twisted seriously and casualties take place in this point. 0.07 belong to the striking which does not have motive force from second to 0.15 seconds, is also called the aftershock area. Striking it in 0.07 seconds, shake about 625000 Newton's strength of strength, time is as long as 0.15 seconds completely, it is 150/1000 seconds.

2.Taiwan AUTOMOTIVE RESEARCH & TESTING CENTER: Deceleration oscillogram

(2)

Fig. (2) Data won examined on the car body structure of the sensor, strike it from 5.35 seconds till 5.37 seconds, belong to motive force to strike, is also called the main seismic zone, 5.35 the amplitude of vibration is the largest from second to 5.37 seconds, it is greatest too to destroy strength. 5.37 Belong to the striking which does not have motive force from second to 5.43 seconds, is also called the aftershock area. Deceleration 33g ,about 404662 Newton strength.
Note: 1g=9.81m/s ^ 2 , Quality of the car about 1250 kg

3.the Defend safety system: absorb shock oscillogram

(3)

Fig.(3) Oil pressure inductor that in order to strike defending on the system is 15 ( pressure inlet ) Data that win examined, 5.35 to 5.358 first main seismic zone, it is the horizontal wave to 5.374, 5.374 to 5.377 is small amplitude of vibration one, later dropped into a horizontal wave to 5.43. This largest amplitude of vibration of the oscillogram reaches 140kgf/cm^2.

Note: The sensor is to the system front, please consult the Fig. five (15).

4.the Defend safety system: absorb shock oscillogram

(4)

Fig.(4) Oil pressure inductor that in order to strike defending on the system is 16 (pressure outlet) Data won examined, the system is adopted and absorbed and shaken at phase, lead pressure in the whole route. From 5.35second being first seismic wave to 5.36 second, pressure later drop to 5.37 second. From 5.37 second being second seismic wave to 5.38 second, it is the horizontal wave from 5.38second to 5.43 seconds.. But in fact, but from Fig(4)the oscillogram learns, form a U trough from 5.357 seconds to 5.373 seconds. The U trough shows and strikes the system of defending that has already absorbed 50% of the strength of shaking, so export pressure value to drop to 68kgf/cm ^ 2already, enough to prove it defend safety system develop to efficiency of it.
Note: The sensor is to the system back end, please consult the Fig. five (16).

Fig.(4)With Fig.(3)Compare, the amplitude of vibration drops and reaches 72 kgf/cm ^ 2, strike the strength of shaking and lighten 72kgf/cm ^ 2, prove this system can absorb shaking strength, relative 50% of the safety coefficient of improvement car body and personnel of 50%.