CN103085741B - Energy-absorbing block and bumper device provided with same - Google Patents
Energy-absorbing block and bumper device provided with same Download PDFInfo
- Publication number
- CN103085741B CN103085741B CN201110332310.XA CN201110332310A CN103085741B CN 103085741 B CN103085741 B CN 103085741B CN 201110332310 A CN201110332310 A CN 201110332310A CN 103085741 B CN103085741 B CN 103085741B
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- Prior art keywords
- energy
- absorbing portion
- absorbing
- absorbent block
- facade
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- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 230000002745 absorbent Effects 0.000 claims description 75
- 239000002250 absorbent Substances 0.000 claims description 75
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 206010061599 Lower limb fracture Diseases 0.000 abstract 1
- 210000001699 lower leg Anatomy 0.000 description 30
- 239000006260 foam Substances 0.000 description 10
- 210000000629 knee joint Anatomy 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000002303 tibia Anatomy 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Landscapes
- Body Structure For Vehicles (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses an energy-absorbing block and a bumper device provided with the same. The bumper device comprises the energy-absorbing block, a front bumper bar and vehicle front skin. The energy-absorbing block is arranged between the front bumper bar and the vehicle front skin and comprises an upper energy-absorbing portion, a lower energy-absorbing portion and a vertical face energy-absorbing portion. The upper energy-absorbing portion, the lower energy-absorbing portion and the vertical face energy-absorbing portion are made of metal plates, the vertical face energy-absorbing portion is connected between the upper energy-absorbing portion and the lower energy-absorbing portion, the upper energy-absorbing portion, the lower energy-absorbing portion and the vertical face energy-absorbing portion form a rectangular groove or a dovetail groove, hollow bores are reserved on at least one of three energy-absorbing portions, and the upper energy-absorbing portion and the lower energy-absorbing portion of the energy-absorbing block are respectively welded to the front bumper bar and are spaced from the vehicle front skin. By the adoption of the hollow bores on the energy-absorbing portion, weight of the energy-absorbing block is alleviated and overall strength of the energy-absorbing block is lowered, sufficient energy absorption is facilitated, impact of legs of a pedestrian is reduced, and leg fracture of the pedestrian is avoided.
Description
Technical field
The present invention relates to bumper energy absorption block, especially a kind of energy absorbent block and there is the bumper system of energy absorbent block.
Background technology
In motor traffic accidents, pedestrian lower leg is the key position being very easy to come to harm, particularly easily and automobile engine cover and front bumper collide.
For this reason, in some current vehicle design setup, the crash bar on automobile and between covering, bumper energy absorption block is set.When colliding, the distortion of energy absorbent block self both absorption portion can clash into the energy of part.
Existing bumper energy absorption block is foam energy absorbent block substantially, described foam type energy absorbent block is hot-forming by the PP that foams (polypropylene) particle, but, this energy absorbent block energy absorbing efficiency is lower, and Material Cost is higher, and, owing to adopting foam, want that there is the thickness that good energy-absorbing effect just must increase foam energy absorbent block, thus relatively reduce the front overhang length of automobile, limit the arrangement space of automobile front chamber.Therefore design a kind of novel bumper energy absorption block to be necessary.
Summary of the invention
In order to solve the deficiency of existing bumper energy absorption block, the invention provides the injury that can effectively reduce when pedestrian and automotive front collide; Effectively can increase again the device of front deck arrangement space.
In order to realize said object above, device of the present invention is design like this: energy absorbent block comprises energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion, described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion are made up of metal sheet, facade energy-absorbing portion is connected between energy-absorbing portion, lower energy-absorbing portion, upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion form rectangular channel or dovetail groove, have at least one to be provided with hollow hole in described three energy-absorbing portions.
Preferably, the thickness in described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion is 0.5mm ~ 0.8mm.
Preferably, described hollow hole is square, trapezoidal or circular.
Preferably, described hollow hole is rectangle, and the width of rectangle is 35-45mm, length is 45-65mm.
Preferably, the energy-absorbing portion of described upper and lower surface and facade energy-absorbing portion are made up of mild steel plate or aluminium sheet.
Present invention also offers a kind of bumper system with energy absorbent block, described bumper system comprises energy absorbent block, Guard Assy and front part of vehicle covering, energy absorbent block is arranged between Guard Assy and front part of vehicle covering, described energy absorbent block comprises energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion, described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion are made up of metal sheet, facade energy-absorbing portion is connected to energy-absorbing portion, between lower energy-absorbing portion, upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion form rectangular channel or dovetail groove, one is had at least to be provided with hollow hole in described three energy-absorbing portions, the upper energy-absorbing portion of energy absorbent block, lower energy absorbing portion do not weld with Guard Assy and and front part of vehicle covering interval arrange.
Preferably, the thickness in described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion is 0.5mm ~ 0.8mm.
Preferably, described hollow hole is square, trapezoidal or circular.
Preferably, described hollow hole is rectangle, and the width of rectangle is 35-45mm, length is 45-65mm.
Preferably, the energy-absorbing portion of described upper and lower surface and facade energy-absorbing portion are made up of mild steel plate or aluminium sheet.
One is had at least to be provided with hollow hole in three energy-absorbing portions of energy absorbent block of the present invention, by arranging hollow hole by energy-absorbing portion, both the weight of energy absorbent block had been alleviated, again reduce the bulk strength of energy absorbent block, so that can abundant energy-absorbing, reduce the impulsive force to pedestrian lower leg, thus significantly reduce the impact acceleration that in collision, pedestrian lower leg knee joint is subject to, avoid pedestrian lower leg that the injury of fracture occurs.This device adopts metallic material, energy absorbing efficiency is improved greatly, also reduces the longitudinal size of vehicle front, effectively increase front overhang length, improve front deck master layout space.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, energy absorbent block of the present invention is described in detail, wherein:
Fig. 1 is the area schematic of pedestrian shank collision on automobile;
Fig. 2 is the pedestrian protecting shank collision area birds-eye view of energy absorbent block of the present invention and bumper/spoiler;
Fig. 3 is the integral structure figure of a kind of embodiment of energy absorbent block of the present invention;
Fig. 4 is the birds-eye view of Fig. 3;
Fig. 5 is the upward view of Fig. 3;
Fig. 6 has the partial schematic diagram that the present invention installs the automobile of energy absorbent block;
Fig. 7 has the partial section that the present invention installs the automobile of energy absorbent block;
Fig. 8 shows section drawing when energy absorbent block of the present invention and pedestrian lower leg collide;
Fig. 9 shows the section drawing being out of shape maximum position when energy absorbent block of the present invention and pedestrian lower leg collide.
Detailed description of the invention
Refer to Fig. 3-5, the structural representation of a kind of embodiment of energy absorbent block of the present invention, this energy absorbent block comprises energy-absorbing portion 10, lower energy-absorbing portion 20 and is connected the facade energy-absorbing portion 30 of upper and lower surface.Wherein, herein " on ", D score is the reference direction of the system of axes being horizontal surface relative to ground.Upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion form rectangular channel or dovetail groove, as shown in Figure 3, the space that energy absorbent block of the present invention is not exclusively closed by upper energy-absorbing portion 10, lower energy-absorbing portion 20 and facade energy-absorbing portion 30 shape that is connected upper and lower surface, this incomplete enclosure space is class similar C-shaped in the cross section perpendicular to facade energy-absorbing portion.
Energy absorbent block is designed to match with front bumper, front covering, and the upper energy-absorbing portion 10 of this energy absorbent block, lower energy-absorbing portion 20 can be quadrant shape, and described facade energy-absorbing portion 30 can be arc shape, and therefore, match with vehicle body in each face of energy absorbent block.
In order to alleviate the weight of energy absorbent block and play better energy-absorbing effect, preferably, described upper energy-absorbing portion 10, lower energy-absorbing portion 20 and facade energy-absorbing portion 30 are made up of metal sheet, are preferably made up of the yielding metal such as dead-soft steel, aluminium.More preferably, the thickness of described metal sheet is 0.5mm ~ 0.8mm.In order to meet the requirement of pedestrian protecting shank collision performance, when adopting traditional foam type energy absorbent block, at collision area border 700 place, thickness is longitudinally at least 60 ~ 70mm, to absorb energy more fully.After adopting energy absorbent block of the present invention, because energy absorbing efficiency improves greatly, at collision area border 700 place, thickness longitudinally only needs 40 ~ 50mm.Energy absorbent block of the present invention is compared than traditional foam type energy absorbent block, and above-mentioned longitudinal thickness shortens 1/3rd.
In three energy-absorbing portions of energy absorbent block of the present invention, an energy-absorbing portion is had at least to be provided with hollow hole 100.Preferably, described energy-absorbing part device arranges hollow hole on each, and this had both alleviated the weight of energy absorbent block, again reduces the bulk strength of energy absorbent block so that abundant energy-absorbing, reduces the kneed impulsive force of pedestrian lower leg, energy absorbing efficiency is improved greatly.
Hollow hole 100 can be uniformly distributed, and also can set as required.Preferably, hollow hole 100 is arranged with the span of 50 ~ 60mm.Hollow hole 100 can be designed as various applicable shape, such as square, trapezoidal or circular.The size of hollow hole can design as required, and preferably, rectangle hollow hole width is 30 ~ 45mm, and length is 45 ~ 65mm.During concrete use, the length in preferred rectangle hollow hole 100 is 55 millimeters, and width is 40 millimeters.In a preferred embodiment, when hollow hole is circular, hollow hole diameter range is 30 ~ 50mm.In a kind of preferred implementation of energy absorbent block of the present invention, three energy-absorbing portions are all provided with hollow hole, when pedestrian lower leg strikes automobile, pedestrian lower leg knee joint and energy absorbent block are clashed into, this energy absorbent block absorption portion Impact energy, conquassation bending can be there is rapidly to reduce the kneed impact acceleration of pedestrian lower leg in the hollow hole in facade energy-absorbing portion, subsequently, the hollow hole in upper and lower two energy-absorbing portions deforms, thus reduce the kneed angle of bend of pedestrian lower leg, avoid leg shin bone that fracture phenomenon occurs.
In order to protect pedestrian further, the hollow hole position in upper energy-absorbing portion 10, lower energy-absorbing portion 20 is comparatively away from facade energy-absorbing portion 30.If hollow hole is comparatively near apart from front covering, after pedestrian lower leg clashes into, rapidly the conquassation of metal energy absorbent block can be fallen, thus be pressed onto on bumper/spoiler, knee joint can be caused to be subject to great impact power.Preferably, the hollow hole in described upper energy-absorbing portion and upper energy-absorbing portion is positioned at 1/2 ~ 2/3 position near facade energy-absorbing portion, namely go up energy-absorbing portion, lower energy-absorbing portion hollow hole 100 near 1/3 ~ 1/2 of Guard Assy one end end.The closer Guard Assy of hollow hole in upper and lower two energy-absorbing portions of the present invention, can ensure that metal energy absorbent block has certain intensity when pedestrian's impact on legs automobile starting stage.
Fig. 6 and 7 is partial schematic diagrams that the present invention has the automobile installing energy absorbent block, and this automobile comprises energy absorbent block 1, front covering 2 and Guard Assy 3, and energy absorbent block 1 is between front covering 2 and Guard Assy 3.
Energy absorbent block 1 comprises energy-absorbing portion 10, lower energy-absorbing portion 20 and is connected the facade energy-absorbing portion 30 in described two energy-absorbing portions, has at least one to be provided with hollow hole 100 in its three energy-absorbing portions.Preferably, upper energy-absorbing portion 10, lower energy-absorbing portion 20 are plane in the one end near Guard Assy 3, and be cambered surface in the one end near front covering 2, facade energy absorbent block 30 is cambered surface, and its crooked radian is consistent with the moulding face of covering before automobile 2.
Described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion are made up of yielding metallic material, such as dead-soft steel, aluminium etc.Upper energy-absorbing portion, lower energy-absorbing portion are welded with Guard Assy 3 by solder joint 200, are not connected with covering.Solder joint be spaced apart 60 ~ 70mm.One or more energy-absorbing portions in this energy absorbent block are provided with hollow hole 100, and hollow hole 100 can be designed as various applicable shape, such as square, trapezoidal or circular.The rectangle hollow hole that a kind of preferred implementation of the present invention have employed interval type is arranged, namely, in energy absorbent block, in energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion, equal compartment of terrain is provided with one or more hollow hole, this technical scheme not only achieves the target of loss of weight, improve energy absorbing efficiency, and owing to adopting metal material, thus there is better energy-absorbing function, the thickness in each energy-absorbing portion is also thinner, shortens 1/3rd than traditional foam type energy absorbent block on longitudinal thickness.The entire length of energy absorbent block can be slightly longer or slightly short than Guard Assy, and preferably, both length is equal.
Fig. 8 and 9 is energy absorbent block of the present invention and pedestrian lower leg ram schematic diagram when colliding, and Fig. 8 shows the integral structure section drawing that energy absorbent block 1 of the present invention has just collided when contacting with pedestrian lower leg; Fig. 9 shows the integral structure section drawing when energy absorbent block 1 of invention and pedestrian lower leg collide under distortion maximum case.
As can be seen from Fig. 8,9, adopt technical scheme of the present invention, when pedestrian lower leg strikes automobile front beam system, pedestrian lower leg knee joint and energy absorbent block position are clashed into, this energy absorbent block absorption portion Impact energy, can there is rapidly conquassation bending to reduce the kneed impact acceleration of pedestrian lower leg in the hollow hole of middle facade, the hollow hole of upper and lower surfaces deforms and can reduce the kneed angle of bend of pedestrian lower leg subsequently, avoids leg shin bone that fracture phenomenon occurs.
Energy absorbent block of the present invention not only meets safety requirements completely, and reduces thickness.Refer to Fig. 1, be depicted as the pedestrian protecting shank collision area that national standard requires automobile, Figure 2 shows that the pedestrian protecting shank collision area birds-eye view of energy absorbent block of the present invention and bumper/spoiler.In order to meet the requirement of pedestrian protecting shank collision performance; when adopting traditional foam type energy absorbent block; at collision area border 700 place; longitudinally at least need the thickness of 60 ~ 70mm to absorb energy; after adopting metal energy absorbent block of the present invention; because energy absorbing efficiency improves greatly, at collision area border 700 place, longitudinally only need the thickness of 40 ~ 50mm.Along with pedestrian lower leg and automotive front occur further to contact, conquassation bending can be there is rapidly in the hollow hole in metal energy absorbent block, abundant absorption energy, the impact that further reduction pedestrian lower leg is subject to and angle of bend, prevent pedestrian lower leg knee joint bending angle excessive and cause fracture.According to existing 45mm foam energy absorbent block, the maximum impact that pedestrian lower leg is subject to is more than 170g, and maximum deflection angle is more than 19 degree; According to 45mm metal energy absorbent block of the present invention, the maximum impact that pedestrian lower leg is subject to can be reduced to below 135g, maximum deflection angle is reduced to less than 15 degree.
Last it is noted that above embodiment only in order to illustrate the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification sheets with reference to each above-mentioned embodiment to present invention has been detailed description, those of ordinary skill in the art should be appreciated that and still can modify to the present invention or equivalent to replace; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. an energy absorbent block, it is characterized in that, described energy absorbent block comprises energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion, described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion are made up of metal sheet, facade energy-absorbing portion is connected between energy-absorbing portion, lower energy-absorbing portion, upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion form rectangular channel or dovetail groove, and described three energy-absorbing portions are equipped with hollow hole; The thickness in described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion is 0.5mm ~ 0.8mm.
2. energy absorbent block according to claim 1, is characterized in that, described hollow hole is square, trapezoidal or circular.
3. energy absorbent block according to claim 1, is characterized in that, described hollow hole is rectangle, and the width of rectangle is 35-45mm, length is 45-65mm.
4. energy absorbent block according to claim 1, is characterized in that, energy-absorbing portion and the facade energy-absorbing portion of described upper and lower surface are made up of mild steel plate or aluminium sheet.
5. have a bumper system for energy absorbent block, it is characterized in that, described bumper system comprises energy absorbent block, Guard Assy and front part of vehicle covering, and energy absorbent block is arranged between Guard Assy and front part of vehicle covering,
Described energy absorbent block comprises energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion, described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion are made up of metal sheet, facade energy-absorbing portion is connected between energy-absorbing portion, lower energy-absorbing portion, upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion form rectangular channel or dovetail groove, and described three energy-absorbing portions are equipped with hollow hole; The thickness in described upper energy-absorbing portion, lower energy-absorbing portion and facade energy-absorbing portion is 0.5mm ~ 0.8mm;
The upper energy-absorbing portion of energy absorbent block, lower energy absorbing portion do not weld with Guard Assy and and front part of vehicle covering interval arrange.
6. device according to claim 5, is characterized in that, described hollow hole is square, trapezoidal or circular.
7. device according to claim 5, is characterized in that, described hollow hole is rectangle, and the width of rectangle is 35-45mm, length is 45-65mm.
8. device according to claim 5, is characterized in that, energy-absorbing portion and the facade energy-absorbing portion of described upper and lower surface are made up of mild steel plate or aluminium sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110332310.XA CN103085741B (en) | 2011-10-27 | 2011-10-27 | Energy-absorbing block and bumper device provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110332310.XA CN103085741B (en) | 2011-10-27 | 2011-10-27 | Energy-absorbing block and bumper device provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103085741A CN103085741A (en) | 2013-05-08 |
| CN103085741B true CN103085741B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110332310.XA Expired - Fee Related CN103085741B (en) | 2011-10-27 | 2011-10-27 | Energy-absorbing block and bumper device provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103085741B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786682A (en) * | 2014-02-24 | 2014-05-14 | 重庆长安汽车股份有限公司 | Automobile and passive pedestrian protection device of automobile |
| CN108973906A (en) * | 2017-06-05 | 2018-12-11 | 标致雪铁龙集团 | A kind of bumper skeleton structure being crushed and automobile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883983A (en) * | 2005-06-22 | 2006-12-27 | 本田技研工业株式会社 | Vehicle front bumper arrangement |
| CN2915603Y (en) * | 2006-04-28 | 2007-06-27 | 上海通用汽车有限公司 | Automobile bumper system |
| CN201272311Y (en) * | 2008-06-30 | 2009-07-15 | 奇瑞汽车股份有限公司 | Bumper system |
| CN101722914A (en) * | 2009-11-06 | 2010-06-09 | 奇瑞汽车股份有限公司 | Front anticollision beam assembly structure for automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4477831B2 (en) * | 2003-03-20 | 2010-06-09 | アイシン精機株式会社 | Automotive bumper equipment |
-
2011
- 2011-10-27 CN CN201110332310.XA patent/CN103085741B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1883983A (en) * | 2005-06-22 | 2006-12-27 | 本田技研工业株式会社 | Vehicle front bumper arrangement |
| CN2915603Y (en) * | 2006-04-28 | 2007-06-27 | 上海通用汽车有限公司 | Automobile bumper system |
| CN201272311Y (en) * | 2008-06-30 | 2009-07-15 | 奇瑞汽车股份有限公司 | Bumper system |
| CN101722914A (en) * | 2009-11-06 | 2010-06-09 | 奇瑞汽车股份有限公司 | Front anticollision beam assembly structure for automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103085741A (en) | 2013-05-08 |
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