CN103661186A

CN103661186A - Vehicle collision buffer

Info

Publication number: CN103661186A
Application number: CN201210385305.XA
Authority: CN
Inventors: 孙丕祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-25
Filing date: 2012-09-25
Publication date: 2014-03-26

Abstract

Provided is a vehicle collision buffer. The vehicle collision buffer is a special device which is used for controlling vehicle collision energy to be released. The vehicle collision buffer is like a damping cylinder, a plurality of sets of units with the sheet metal punching capacity are installed in a metal cylinder, the number of the sets of the units is usually ten or fifteen or twenty, and each set of unit comprises an annular outer blade, an annular inner blade and a piece of annular energy consumption sheet metal. When front side collision or head-and-tail collision of an automobile happens, the sheet metal in the metal cylinder is punched by the inner blades and the outer blades through external force one by one until force for punching is used up. Huge energy generated in the process of vehicle collision is used up in the process of punching the sheet metal; due to the facts that the vehicle collision buffer is installed at the front end of a crossbar of a chassis of the automobile, and impact force borne by the crossbar of the automobile is limited by the punching resistance capacity of the sheet metal to be within a safety range, the crossbar of the automobile cannot deform, accessories, such as an engine and a water tank, installed in an engine room of the automobile can be protected, a cab of the automobile cannot be damaged due to collision, and reliable safety protection is given to the automobile, a driver and passengers.

Description

Bumper for preventing car when collision

(1) technical field: the present invention is the improvement that belongs to anti-collision device for automobile.

(2) technical background:

I am at the utility model patent technology of application in 2008 (application number: 2008.20008906.8) after authorizing, in 3 years, the repetition test that Xian Hou Jin is capable tens of times, obtained success, for the problem and shortage that exposes Come in Collision test, again Shang intrinsic Ji Chu Jin capable Gai Jin repeatedly, produce more satisfactory model machine, design paper is shaped now, batch manufacturing can have been dropped into, the product of sizing has been designed with very large Gai Jin than former, in order to ensure this scientific findings, by other people, do not usurped, be necessary to apply for new patent to State Patent Office.

(3) summary of the invention:

The implementation method of task of the present invention is similar to former invention; provide a kind of and can protect various types of automobiles (comprising various types of light-duty and heavy motor vehicles) safe fexible unit of colliding; this device and Federal bumper support the use, the safety problem when can fundamentally solve the front of automobile and bumping against from beginning to end.The installation site of the product that the present invention produces on automobile is the same with former invention with using method, at this slightly.The present invention is a fairly simple mechanical device, is on the basis of former Shi being obtained to experience with the capable Collision test of Xin Xing Jin, to be improved to obtain, and the difference part of its architectural feature and former invention is as follows:

1., the assembly method of using force fit instead replaces the fastening means (cancelling the two Ge Luo Silk nail 12* at the 6* two ends in former patent specification figure) of spiral nail, loosening and cause the hidden danger of fault to eliminate coping screw.

2., the 1* in former patent specification accompanying drawing is resolved into two parts (changing 1* and two parts of 3* in patent specification accompanying drawing into), for the activity compression of inner blade provides condition.

3., than thin 3 millimeters of inner blade, change the outer blade in former design into outer blade than thick 3 millimeters of inner blade (referring to former patent specification accompanying drawing and existing patent specification accompanying drawing), to increase the ability of bearing tension of outer blade, reduce and overcome potential outer blade crackle and breakage rate.The space of 3 millimeters of leaving between adjacent two outer blades in former design is cancelled, this space is moved on among the serial connection of inner blade, in whole collision process, the displacement Come cutting metal sheet of inner blade (referring to former patent specification accompanying drawing and existing patent specification accompanying drawing).

4. in former design, the die-cut order of sheetmetal is to carry out successively (drawing that means patent specification accompanying drawing is arranged) left from a rightmost beginning of energy disperser, and new design antithesis, be the leftmost beginning of sheetmetal from energy disperser, carry out to the right successively.

5., cancelled the orienting sleeve (referring to the 10* in former patent specification accompanying drawing) in former design, use outer blade automatic guide instead, make the length of energy disperser reduce 37 to 82 millimeters, do like this weight that is not only conducive to the repacking of automobile but also has reduced energy disperser, fallen at the end productive costs.After the 3rd sheetmetal is cut off, fixedly the core bar of inner blade starts to expose, and often how a sheetmetal of punching exposes bar subsequently just increases by 3 millimeters.

Typical structure of the present invention be according to can continuous cutting the Functional Design of 15 sheetmetals, outer blade is identical with the number of packages of interior cutting ring sheet, large 3 millimeters of the Thickness Ratio inner blade thickness of outer blade, under effect in external force when there is car accident, inner blade and the dislocation of outer blade, first sheetmetal is cut off, now an annular sheet metal is cut into two annular sheet metals, the energy producing during collision has been consumed a part in the process of die-cut sheetmetal, then carries out the stamping-out process of second sheetmetal again ...The huge energy producing during collision is consumed gradually like this in the process of die-cut sheetmetal continuously, until unable die-cut.Because energy disperser is mounted on the stressed crossbeam of automobile, die-cut by one by one of sheetmetal, so the power on automotive frame of acting in the process of whole die-cut sheetmetal remains in the scope of the power that a die-cut sheetmetal produces.The thickness of sheetmetal is selected by the ability to bear of the automotive frame of different automobile types, thus automotive frame can not be washed out, fool proof.In the just energy disperser being damaged in whole car accident, be loaded in advance in order to catabiotic sheetmetal, other member in energy disperser can be not destroyed.Outer insert design in sort buffer device is thiner, likely occurs crackle or Fragmentation Phenomena in comparatively serious accident, but it can not affect the function of energy disperser, changes new can recover its original use function after collision, and energy disperser still can continue to use.So its operation and maintenance expense is very low, susceptible to user acceptance.

(4) accompanying drawing explanation:

The structural representation of Fig. 1, energy disperser: the inner structure state that represents collision anterior bumper.

The fundamental diagram of Fig. 2, energy disperser: represent that comparatively serious car accident has occurred hypothesis, 15 sheetmetals in energy disperser are all cut open, after energy disperser plays one's part to the full, the relative position of each member and metal relic.

(5) specific implementation method:

With reference to Fig. 1, 2, shown in, energy disperser is that a profile is cylindrical mechanical device, total is all contained in cylindrical member 8*, its blade 5* of China and foreign countries and inner blade 6* are separated by sheetmetal 7*, 15 outer blades and guide ring 3* and urceolus 8* take the array configuration of bearing fit, snap ring 2* by two ends fixes its position, 15 inner blades and 15 sheetmetal 7* are by Internal hole positioning, And is gone here and there together with stem stem 9*, with a snap ring 10* on stem stem 9*, pinned, adopt the assembly method of force fit, by lance 1*, inner blade 4* and stem stem 9* are combined into one, iris action due to 15 sheetmetals, inside and outside blade respectively can be separated with regard to its position.

When two cars front occur or bump against Shi Gu Time from beginning to end, Federal bumper is passed to external force the lance 1* of the energy disperser front end that is contained in safety lever two ends, hit thick stick 1* external force P is passed to first inner blade 4*, make it press to first sheetmetal 7*, because sheetmetal is blocked by outer blade 5*, when the power on acting on first sheetmetal surpasses the ability to bear of sheetmetal, this sheetmetal is just cut off, after first sheetmetal is cut off, the relic of first sheetmetal presses to second inner blade, And exerts pressure to second sheetmetal, started the die-cut process to the 2nd sheetmetal, according to such program sheetmetal being cut off one by one, sheetmetal of every cut-out just consumes part energy, until remaining energy is little of cutting not open sheetmetal.Because energy disperser is arranged on the stressed large Beam of automobile; sheetmetal is again one by one die-cut in order; so in whole collision process; the power on the large Beam of automobile of acting on is controlled in the scope of the power that a die-cut sheetmetal produces all the time; those make automotive frame distortion and the power of ruining car can not occur, the protected lower Come of automobile.Sort buffer device is a kind of mechanical device of passive security, plays a role specially after generation car accident, and its safety is very reliable.

By Collision test, learn, same sheetmetal is under the different speed of a motor vehicle, and the ability of its Punching Shear is different, and more the die-cut ability of high resistance is poorer for the speed of a motor vehicle.This is because (the collision energy E=1/2m v that square is directly proportional of energy during auto against and automobile driving speed ²).Energy is larger, and the needed power of die-cut sheetmetal is just less.So along with anxious poly-decline of impact resistance of the raising sheetmetal of the speed of a motor vehicle, this characteristic is obvious, and to make energy disperser by the means of die-cut sheetmetal be very wise move, but it gives again the enforcement band Come of this technology difficult greatly.For solving the safety in running at high speed, the quantity that increases die-cut sheetmetal is undoubtedly a kind of good method, but this will make energy disperser become very long, gives to use cannot overcome difficulties for Come, therefore inadvisable.Mining also can make up the loss that improves the anti-impact shearing reducing because of speed by the method that increases the thickness of sheetmetal, yet the sheetmetal of thickening can make the anti-impact of its Zhuan Che Time in the low speed driving ability of cutting increase, threaten the safety of the large Beam of automobile, reduce the safety of bumper for preventing car when collision ...

Mining with the method that the sheetmetal of different-thickness is used in combination can solve that above-mentioned contradiction ， Longitude overtesting is thought with 1.5,2.0,2.5 3 kind of thickness be combined as suitable, for example combination of 2 1.5,6 2.0,2 2.5 of the use of 10 one group; The combination of 3 1.5,10 2.0 two 2.5 of the use of 15 one group; The combination of 3 1.5,14 2.0,3 2.5 of the use of 20 one group.This solution is to consider that the speed of a motor vehicle while colliding is unknown, when there is low speed or middling speed collision, first by thin sheetmetal, first contacted, general Di speed Peng Zhuan Time, several thinner sheetmetal is above just enough, when the sheetmetal of thinner above (1.5) all punched, this explanation speed of a motor vehicle is higher Jin and rush thicker (2.0) sheetmetal, if all punched this explanation speed of a motor vehicle of 2.0 is too high, at the sheetmetal of adding thereafter several thicker (2.5), stopped, to reduce the injury to automobile, reduced loss.

Take and use maximum miniature cars as example, by its deadweight, 1500kg considers to 2000Kg, through full scale vehicle collision experiment, think that the rational method of implementing is: while filling 15 sheetmetals in 1 energy disperser (these 15 sheetmetals are by 3 1.5,10 2.0,2 2.5 combinations), the upperlimit of energy disperser: Φ 70X292, only, one automobile-used two add up to weight to net weight: 6.5Kg/: 13Kg sheetmetal is made of 45 cold-rolling steels of 2 millimeters, No. 45 steel or T8A steel work for the blade in energy disperser.

Claims

1. utilize the means Come of die-cut sheetmetal to consume the energy producing in automobile collision accident, reach the mechanical cushioning device of protection automotive crash safety.

2. utility model (the application number: 2008.20008906.8) similar that the principle of work of mechanical device according to claim 1 and the inventor applied in 2008.

3. in mechanical device according to claim 1, during collision, the punched order of sheetmetal is to start Yi Jin capable (position shown in meaning Figure of description) to the right from leftmost first.

4. the outer blade in mechanical device according to claim 1 is than thick 3 millimeters of (2008.20008906 of the original applications of inner blade.8 antithesis).

5. mechanical device according to claim 1, when there is car accident, only depends on the displacement Come of inner blade to complete the work of die-cut sheetmetal, and work China and foreign countries blade maintains static.

6. mechanical device according to claim 1, in sleeve preparation for consuming the sheetmetal of collision energy, according to different automobile types, be equipped with number of packages different, be respectively three kinds of 10/group, 15/group, 20/groups, the thickness of the sheetmetal in each group has three kinds, (is 1.5mm; 2.0mm; Tri-kinds of 2.5mm).

7. in mechanical device according to claim 1 when there is car accident, at the 3rd gold. and after genus sheet is rushed to open, fixedly the core bar of inner blade starts to expose, and the amount of exposing increases by 3 millimeters of calculating by often cutting a sheetmetal more.