CN102834641B - Collision energy absorbing structure - Google Patents
Collision energy absorbing structure Download PDFInfo
- Publication number
- CN102834641B CN102834641B CN201180017895.4A CN201180017895A CN102834641B CN 102834641 B CN102834641 B CN 102834641B CN 201180017895 A CN201180017895 A CN 201180017895A CN 102834641 B CN102834641 B CN 102834641B
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- CN
- China
- Prior art keywords
- collision energy
- energy absorbing
- absorbing structure
- shape
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
- F16F7/122—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure characterised by corrugations, e.g. of rolled corrugated material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vibration Dampers (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Provided is a collision energy absorbing structure which has a simple structure, and can be formed by pressing, wherein a stable deformed shape can be obtained; a resistance for load in a deformation process is stable at a high level; and the energy absorbing efficiency is high. The collision energy absorbing structure is cylindrical, and changes shape in the axial direction to absorb collision energy. The shape of a section perpendicular to the axial direction is a polygonal shape which is symmetrical with respect to the center of the section, and is not symmetrical with respect to the center line of the section. When the outline of the section has a rectangular shape, the aspect ratio is less than 1.5, and the ratio of the lengths of the adjacent sides among the sides of the polygonal shape constituting the section is 2.3 or less.
Description
Technical field
The present invention relates at middle collision energy absorbing structure bodies used such as automobiles.
Background technique
To the collision of occupant or vehicle body during in order to relax collision, when the vehicle body of automobile etc. arranges collision, distortion absorbs the structure of collision energy.As the performance that this collision energy absorbing structure body is sought, from the viewpoint of the body lightening of the environmental problem considered in recent years, require to improve energy absorption efficiency, make the compact or thin-walled property in cross section.
Such collision energy absorbing structure body seek energy absorption efficiency height be namely out of shape start after be also that deformation resistance load is high and stable, there is high power absorption energy.When the instability that be deformed into as Figure 21 (a) of collision energy absorbing structure body when colliding is out of shape, fully can not absorb collision energy, therefore, as shown in Figure 21 (b), seek following structure: be made up of the tubular body structure of the size being in concentric circles, by making small diameter tube submerge large-diameter pipe while plastic deformation relative to axial impact load, (submerge type to absorb collision energy; Such as patent documentation 1) or as shown in Figure 21 (c), relative to axial impact load, structure is accordion-like ground plastic deformation (such as patent documentation 2 ~ 7).
In patent documentation 2 in patent documentation 2 ~ 7, recess is set in the cross section of structure and forms polygonal cross section, in addition, in patent documentation 3, link each bight from kernel of section, form the sectional shape with radial framework, in patent documentation 4, there are 8 word cross-sectional configuration, and make cross section line length, the quantity of crest line all increases, and obtains the structure that energy absorption efficiency is good.In patent documentation 5, construction inner possesses filler, improves collisional absorption performance thus.
In addition, in patent documentation 6,7, controlling distortion shape as described below, namely, vertically arrange concavo-convex relative to the axle direction mainly bearing impact load, when bearing the axial impact comprising tilting load, also buckling continuously, producing the plastic deformation of the accordion-like shown in Figure 22 (c).
Patent documentation
Patent documentation 1: Japanese Laid-Open Patent Publication 48-1676 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2008-284931 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2001-124128 publication
Patent documentation 4: Japanese Unexamined Patent Publication 2008-296716 publication
Patent documentation 5: Japanese Unexamined Patent Publication 2001-182769 publication
Patent documentation 6: Japanese Unexamined Patent Publication 2-175452 publication
Patent documentation 7: Japanese Unexamined Patent Publication 2002-104107 publication
Summary of the invention
But the complex structure of the type that submerges shown in above-mentioned patent documentation 1, therefore, causes forming process to increase, have problems in cost, producibility.
Structure shown in above-mentioned patent documentation 2 ~ 7 is that there are the following problems for the situation of accordion-like plastic deformation.
The technology of above-mentioned patent documentation 2 is as effectively applying flexibly limited space and the gimmick improving energy absorption efficiency is effective, but when bearing the axial impact comprising tilting load, sometimes significantly buckle, deformation load is unstable, in this case, energy absorption efficiency reduces.
In technology disclosed in above-mentioned patent documentation 3,4, sectional shape is extremely complicated, has to carry out forging processing, compares common punch process, not only causes cost to increase, and also unfavorable on production face.
In technology disclosed in above-mentioned patent documentation 5, owing to using filler, the weight of structure and cost increase.
In technology disclosed in above-mentioned patent documentation 6,7, vertically arrange jog relative to axle direction, deformed shape is stablized thus, but owing to promoting distortion by jog, so load is low and stable, is difficult to the structure obtaining energy absorption efficiency excellence.
The present invention makes in view of such problem, and its problem is, provides a kind of collision energy absorbing structure body, construct uncomplicated, can punch process, light weight and compact, can obtain stable deformed shape, the drag loads in deformation process is high and stable, and energy absorption efficiency is high.
Above-mentioned problem is solved by the invention of following (1) ~ (6).
(1) a collision energy absorbing structure body, it is formed as tubular, and distortion absorbs collision energy in axial direction, it is characterized in that,
The sectional shape in the cross section vertical with axle direction is be point symmetry relative to the center in cross section and the polygon of non-thread symmetry, the asperratio when profile in this cross section being set to quadrangle is less than 1.5, and the length ratio forming limit adjacent in polygonal limit in cross section is less than 2.3.
(2) the collision energy absorbing structure body as described in (1), is characterized in that, form taper in axial direction.
(3) the collision energy absorbing structure body as described in (1) or (2), is characterized in that, has axially recessed recess at front end.
(4) the collision energy absorbing structure body according to any one of (1) ~ (3), is characterized in that, described collision energy absorbing structure body is made up of drawing material sheet metal being stamped to form to shape.
(5) the collision energy absorbing structure body as described in (4), is characterized in that, at least two described drawing materials engage and form by described collision energy absorbing structure body.
(6) the collision energy absorbing structure body as described in (4) or (5), is characterized in that, the described sheet metal forming described drawing material is the steel plate of the tensile strength with 270 ~ 1500MPa.
Invention effect
According to the present invention, the sectional shape in the cross section vertical with axle direction relative to cross section central point and non-thread is symmetrical, the asperratio when profile in cross section being set to quadrangle is less than 1.5, and the length ratio forming limit adjacent in polygonal limit in cross section is less than 2.3, therefore, stable deformed shape can be obtained.Therefore, the collision energy absorbing structure body that energy absorption efficiency is high can not be hindered producibility and be obtained by punch process, can the compactness of implementation structure body, lightweight.
Accompanying drawing explanation
Fig. 1 is stereogram and the sectional drawing of the collision energy absorbing structure body representing an embodiment of the present invention;
Fig. 2 is the stereogram of the collision energy absorbing structure body representing other mode of execution of the present invention;
Fig. 3 is the stereogram of the collision energy absorbing structure body representing the present invention and then other mode of execution;
Fig. 4 is the figure of one of manufacture method of collision energy absorbing structure body for illustration of Fig. 1 example;
Fig. 5 is the figure of other example of the manufacture method of collision energy absorbing structure body for illustration of Fig. 1;
Fig. 6 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing example 1 of the present invention;
Fig. 7 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing example 2 of the present invention;
Fig. 8 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing example 3 of the present invention;
Fig. 9 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing example 4 of the present invention;
Figure 10 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing example 5 of the present invention;
Figure 11 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing example 6 of the present invention;
Figure 12 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing example 7 of the present invention;
Figure 13 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 1;
Figure 14 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 2;
Figure 15 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 3;
Figure 16 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 4;
Figure 17 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 5;
Figure 18 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 6;
Figure 19 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 7;
Figure 20 is sectional shape, the shape of collision front and back, the figure of curve of loading-process of the structure representing comparative example 8;
Figure 21 is the figure of the mode of texturing for illustration of collision energy absorbing structure body;
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
The shape > of < structure
Fig. 1 represents the collision energy absorbing structure body of an embodiment of the present invention, and (a) is stereogram, and (b) is sectional drawing.
As shown in Fig. 1 (a), the collision energy absorbing structure body of present embodiment is made up of cylinder substantially, and an end (such as upper end) is collision front end, and the direction when colliding thing and this collision front end collides along axle L deforms, and absorbs collision energy.
As shown in Fig. 1 (b), the shape in the cross section vertical with axle L direction by relative to the center O point symmetry in cross section and the polygon of non-thread symmetry form.Figure represents that sectional shape is the situation of 16 dihedrals comprising recess.
By like this shape in the cross section vertical with axle L being set to polygon, can be produced by punch process, cross section line length can be made longer, therefore, collision performance can be improved in limited space.
In addition, load during collision is not limited to situation about such as axially inputting, also hypothesis is to the situation of bearing relative to the angled tilting load of axle direction tool, when bearing the collision comprising this tilting load, because significantly buckling, or local bending and the distortion destabilization of parts time, produce the reduction of deformation load, power absorption can significantly reduce, but by the shape in cross section vertical for the axle L with cylinder being set to point symmetry and non-thread is symmetrical, also this tilting load is comprised, deformation form during flattening can be made to stablize, stable collision performance can be obtained.This think due to, by being formed as point symmetry and non-thread is symmetrical, the carrying out of buckling on relative limit produces deviation, is difficult to produce the large deformation of periodically large to buckle, laying across, to bend and so on.
The asperratio forming the tetragonal R of the polygonal profile forming cross section is less than 1.5.At this, asperratio is formed as the value of long limit/minor face (being a/b in the example of figure).When quadrangle R is square (a=b), asperratio is 1, and asperratio may not be more than 1.
Be defined as that to be less than 1.5 be also to obtain stable distortion by forming the dimetric asperratio of polygonal profile forming cross section, this is because, greatly, namely become elongated rectangular along with asperratio becomes, during flattening, easily produce bending.
In addition, the length ratio forming limit adjacent in polygonal limit in cross section is less than 2.3.At this, the length ratio on adjacent limit is the value on the limit on long limit/short.When the length on adjacent two limits is identical, the length ratio on adjacent limit is 1, and the length ratio on adjacent limit is necessary for more than 1.In the example of figure, the length ratio on adjacent limit is the maximum combination (L1 > L2) being combined as limit L1 and limit L2, becomes L1/L2≤2.3.
The length ratio on the adjacent limit formed in polygonal limit in cross section being set to less than 2.3 is because deformation form is stablized thus.This thinks general because the side that in adjacent limit, the length of side is longer easily causes large deformation, and for suppressing this large deformation, the length of side on the limit of the side that the length of side in adjacent limit is shorter is most important, there is optimal ratio between the limit that these are adjacent.
From the view point of making deformation form stable, as shown in Figure 2, preferably collision energy absorbing structure body is set at the structure of axle direction with taper.Taper in this situation as shown in the figure, is preferably formed in the mode broadened towards rear end from front end (collision front end).This think due to, by can the position that starts of certain variations with taper, stably start distortion.
As shown in Figure 3, by forming the such concave shape N of otch in front end (collision front end), equally also can the position that starts of certain variations, stably can start distortion.
In addition, the structure with taper shown in Fig. 2 also can with the concave shape N shown in Fig. 3.
The suitable material > of < structure
The preferred drawing sheet metal of collision energy absorbing structure body of present embodiment and forming.As the sheet metal be suitable for, hot rolling steel plate, cold rolled sheet can be enumerated or steel plate is implemented to the plated steel sheet of the plating such as electrogalvanizing or molten zinc plating, and then stainless-steel sheet (SUS) can be enumerated.When hot-dip galvanized steel sheet, also Alloying Treatment can be implemented.In addition, also organic coating process can be implemented further after plating for plated steel sheet.As steel plate, preferably there is the tensile strength of 270 ~ 1500MPa.In addition, as sheet metal, except steel plate, also can use aluminium, magnesium, their other metallic material such as alloy.
< manufacture method >
Secondly, the example of the manufacture method of this collision energy absorbing structure body is described.
At this, represent the situation being manufactured collision energy absorbing body by drawing.In the example of Fig. 4, as shown in (a), prepare two sheet metals, the mould be made up of punch die and drift is used to be shaped as shown in (b) by described sheet metal, as shown in (c), the end face of the formed article obtained is bonded to each other, thus obtains the structure shown in (d).Specifically, in order to the structure of working drawing 1, and manufactured the formed article of same shape by drawing by two sheet metals, and they are engaged.In the example of Fig. 5, use the mould be made up of punch die and drift to be shaped as shown in (b) by the sheet metal of shown in (a), close cross section by carrying out bending to it, end is engaged with each other, obtain the structure shown in (c) thus.Mould (punch die and drift) for drawing consider above-mentioned sectional shape (for be point symmetry and the polygon of non-thread symmetry relative to the center in cross section, though the asperratio when profile in this cross section is quadrangle is less than 1.5 and the length ratio forming adjacent limit in polygonal limit in cross section is less than 2.3) design.
In the example of Fig. 4, Fig. 5, describe the formation of parts by being manufactured regulation sectional shape by one to two sheet metal and engaged the situation of manufacturing structure body, but also can use each position of the forming sheet metal of more than three, and they are engaged manufacturing structure body.As the method for being engaged with each other by end face, the various methods such as spot welding, laser beam welding, arc welding, ca(u)lk, riveted joint, application of adhesive can be adopted.
Embodiment
At this, grasped the characteristic of the collision energy absorbing structure body of various shape by simulation.
Simulation uses general Dynamic Announce method software LS-DYNA ver.971.Suitable material is tensile strength 440MPa, thickness of slab is the steel plate of 1.6mm.For structure and the structure of comparative example 1 ~ 8 that departs from the scope of the present invention of the example of the present invention 1 ~ 7 of the shape had in scope of the present invention, flattening performance when simulation makes the plane pressure head without curvature collide with speed per hour 15km.Flatten performance by distortion after the evaluation of deformation resistance load, therefore, ask for average load according to flattening distance for the curve of loading-process of 20mm ~ 70mm, and evaluate with the shape after the average load of per unit weight and distortion.Gather in table 1 and represent its result.Fig. 6 ~ Figure 12 represents the sectional shape of the structure of example 1 ~ 7 of the present invention, shape, the curve of loading-process of collision front and back.Figure 13 ~ Figure 20 represents the sectional shape of the structure of comparative example 1 ~ 8, shape, the curve of loading-process of collision front and back.In table 1, in deformed shape one hurdle, zero is the situation of continuous accordion-like distortion, × for there occurs bending or the cycle large situation of buckling.In addition, in Fig. 6 ~ 20, (a) is sectional shape, and (b) is the shape before and after collision, and (c) is curve of loading-process.As shown in these, confirmed, in example of the present invention 1 ~ 7 within the scope of the invention, during flattening continuously and stably accordion-like plastic deformation, in addition, the average load of per unit weight during flattening is high, and endergonic efficiency is high.On the other hand, in the comparative example 1 ~ 8 departed from the scope of the present invention, confirmed, produced bending, cycle large buckling at axle direction, deformed shape is unstable, and the average load of per unit weight is low.
By having confirmed above, as the present invention, the sectional shape in the cross section vertical with axle direction is central point relative to cross section and the polygon of non-thread symmetry, the asperratio when profile in this cross section being set to quadrangle is less than 1.5, and the length ratio forming limit adjacent in polygonal limit in cross section is less than 2.3, obtain stable deformed shape thus, and drag loads is high and stable, the collision energy absorbing structure body that energy absorption efficiency is high can be obtained.
Table 1]
The # scope of the invention outer (deformed shape)
* the accordion-like distortion continuously of the per unit weight zero between stroke 20 ~ 70mm
The bending of average load × generation, cycle large buckling
Claims (5)
1. a collision energy absorbing structure body, it is formed as tubular, and distortion absorbs collision energy in axial direction, it is characterized in that,
The sectional shape in the cross section vertical with axle direction is be point symmetry relative to the center in cross section and the polygon of non-thread symmetry, the profile in this cross section is set to the quadrangle that asperratio is less than 1.5, and the length ratio forming limit adjacent in polygonal limit in cross section is less than 2.3
Described collision energy absorbing structure body is made up of drawing material sheet metal being stamped to form to shape.
2. collision energy absorbing structure body as claimed in claim 1, is characterized in that, form taper in axial direction.
3. collision energy absorbing structure body as claimed in claim 1 or 2, is characterized in that having axially recessed recess at front end.
4. collision energy absorbing structure body as claimed in claim 1, is characterized in that, at least two described drawing materials engage and form by described collision energy absorbing structure body.
5. the collision energy absorbing structure body as described in claim 1 or 4, is characterized in that, the described sheet metal forming described drawing material is the steel plate of the tensile strength with 270 ~ 1500MPa.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010089202A JP4930620B2 (en) | 2010-04-08 | 2010-04-08 | Impact energy absorbing structure |
| JP2010-089202 | 2010-04-08 | ||
| PCT/JP2011/059223 WO2011126146A1 (en) | 2010-04-08 | 2011-04-07 | Collision energy absorbing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102834641A CN102834641A (en) | 2012-12-19 |
| CN102834641B true CN102834641B (en) | 2015-07-08 |
Family
ID=44763078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180017895.4A Expired - Fee Related CN102834641B (en) | 2010-04-08 | 2011-04-07 | Collision energy absorbing structure |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4930620B2 (en) |
| KR (1) | KR101427020B1 (en) |
| CN (1) | CN102834641B (en) |
| WO (1) | WO2011126146A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2918868A4 (en) * | 2012-11-08 | 2016-07-13 | Jfe Steel Corp | Impact absorbing member |
| KR101864519B1 (en) | 2013-11-27 | 2018-07-04 | 신닛테츠스미킨 카부시키카이샤 | Shock-absorbing part |
| CN103982208A (en) * | 2014-05-19 | 2014-08-13 | 辽宁工程技术大学 | Mine inner and outer turnover resistive energy-absorption anti-impact device |
| JP6044624B2 (en) * | 2014-12-17 | 2016-12-14 | マツダ株式会社 | Vehicle frame structure |
| CN107606019B (en) * | 2017-08-09 | 2019-06-21 | 西北工业大学 | A double-layer end-sealed and double-turned energy-absorbing structure with high-efficiency buffering and energy-absorbing properties |
| JP7238867B2 (en) * | 2020-08-18 | 2023-03-14 | Ｊｆｅスチール株式会社 | Automobile collision energy absorbing part, method for manufacturing the automobile collision energy absorbing part |
| WO2022085575A1 (en) | 2020-10-20 | 2022-04-28 | 日本製鉄株式会社 | Impact absorption member |
| WO2023204251A1 (en) | 2022-04-19 | 2023-10-26 | 日本製鉄株式会社 | Shock absorption member |
| CN114857193B (en) * | 2022-04-19 | 2023-04-14 | 福建工程学院 | An easy-to-disassemble and three-dimensional self-locking slot-type thin-walled pipe energy-absorbing system |
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| JP2006207725A (en) * | 2005-01-28 | 2006-08-10 | Sumitomo Metal Ind Ltd | Shock absorbing member |
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| CN101428596A (en) * | 2007-11-05 | 2009-05-13 | 丰田铁工株式会社 | Impact absorbing member for vehicle |
| WO2009116395A1 (en) * | 2008-03-21 | 2009-09-24 | トヨタ自動車株式会社 | Vehicle bumper structure and energy absorbing body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4471904B2 (en) | 2005-08-01 | 2010-06-02 | 豊田鉄工株式会社 | Bumper beam for automobile |
| JP5011516B2 (en) | 2007-07-20 | 2012-08-29 | キョーラク株式会社 | Shock absorber for vehicle |
| KR101010177B1 (en) * | 2008-05-14 | 2011-01-20 | 성준엽 | Automotive energy absorbers |
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2010
- 2010-04-08 JP JP2010089202A patent/JP4930620B2/en active Active
-
2011
- 2011-04-07 CN CN201180017895.4A patent/CN102834641B/en not_active Expired - Fee Related
- 2011-04-07 WO PCT/JP2011/059223 patent/WO2011126146A1/en active Application Filing
- 2011-04-07 KR KR1020127026307A patent/KR101427020B1/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1856670A (en) * | 2003-07-28 | 2006-11-01 | 住友金属工业株式会社 | Crash energy absorption member |
| CN1882457A (en) * | 2003-11-28 | 2006-12-20 | 京洛株式会社 | Vehicle shock absorber |
| JP2006123887A (en) * | 2004-09-28 | 2006-05-18 | Aisin Seiki Co Ltd | Shock absorbing implement for vehicle and shock absorbing structure for vehicle |
| JP2006207725A (en) * | 2005-01-28 | 2006-08-10 | Sumitomo Metal Ind Ltd | Shock absorbing member |
| JP2009096225A (en) * | 2007-10-12 | 2009-05-07 | Kobe Steel Ltd | Energy absorbing member |
| CN101428596A (en) * | 2007-11-05 | 2009-05-13 | 丰田铁工株式会社 | Impact absorbing member for vehicle |
| WO2009116395A1 (en) * | 2008-03-21 | 2009-09-24 | トヨタ自動車株式会社 | Vehicle bumper structure and energy absorbing body |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120135314A (en) | 2012-12-12 |
| JP2011218935A (en) | 2011-11-04 |
| CN102834641A (en) | 2012-12-19 |
| KR101427020B1 (en) | 2014-08-05 |
| JP4930620B2 (en) | 2012-05-16 |
| WO2011126146A1 (en) | 2011-10-13 |
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