CN105034998A - Bump energy-absorbing device and automobile with same - Google Patents
Bump energy-absorbing device and automobile with same Download PDFInfo
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- CN105034998A CN105034998A CN201510583423.5A CN201510583423A CN105034998A CN 105034998 A CN105034998 A CN 105034998A CN 201510583423 A CN201510583423 A CN 201510583423A CN 105034998 A CN105034998 A CN 105034998A
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- Prior art keywords
- energy
- end cap
- absorbing
- absorbing device
- guiding end
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
A bump energy-absorbing comprises a guide end cover, an installation plate connected to the guide end cover, a cutter and an energy-absorbing cylinder, wherein one end of the energy-absorbing cylinder is inserted into the guide end cover; the cutter consists of a plurality of cutting edge parts corresponding to the energy-absorbing cylinder; when the other end of the energy-absorbing cylinder is axially bumped, the energy-absorbing cylinder is pressed to be inserted into the guide end cover and cut into a plurality parts by the cutter; and the energy-absorbing cylinder reversely bends on the bottom of the guide end cover, so bump energy can be absorbed. Deformation space is fully utilized with the energy-absorbing cylinder pressed into the guide end cover and reversely bending and 100% spatial utilization rate can be achieved; and various energy absorption methods are utilized in the bum energy-absorbing device, including combinations of material efficacy-losing energy, friction energy, compression and bending deformation energy, so structural bump safety performance can be greatly improved. The invention further provides an automobile having the bump energy-absorbing device.
Description
Technical field
The present invention relates to vehicle safety technical field, particularly relate to a kind of collision energy-absorbing device and the automobile of collision energy-absorbing device is installed.
Background technology
Automobile has become the important vehicle in people's daily life and work, but along with popularizing of automobile, the safety issue of automobile is more and more outstanding, how to guarantee the safety of running car, is automobile design and the important topic in manufacturing.Wherein, Crash Safety Design of Vehicles can be an important critical for the evaluation, namely automobile is when colliding, in identical deformation space, the energy that body structure absorbs is more, and the collision performance of automobile will be better, the safety of automobile is also higher, otherwise the collision performance of automobile will be lower, the safety of automobile is also just lower.
At present, in automobile design, generally by rationally arranging collision energy-absorbing structure on the vehicle body safety knot component (as longeron) of front and back ends, so that when automobile collides, collision energy-absorbing structure is utilized fully to absorb the kinetic energy of vehicle, relax impact load, improve the collision safety performance of automobile.But, the collision energy-absorbing structure of existing automobile is directly installed on longeron front end usually, such as deformable energy absorbing component etc., but the load-carrying capacity of these collision energy-absorbing structures is lower, deformation stability is poor, when colliding distortion, deformable amount is only the 60-70% of scantling of structure, can not make full use of energy-absorbing space, and these collision energy-absorbing structures realize energy-absorbing often through the plastic deformation of material in addition, its energy absorption mode is single, and collision safety performance is poor.Can have an impact to assembling after traditional collision energy-absorbing structure distortion, be not easy to change, thus cause automobile after an impact, the maintenance cost of vehicle body parts and collision energy-absorbing structure is very high.
Summary of the invention
Based on this, the object of the present invention is to provide a kind of collision safety performance high, change collision energy-absorbing device easily.
There is a need to provide a kind of and the automobile that collision safety performance is high, change collision energy-absorbing device is easily installed.
A kind of collision energy-absorbing device, comprise a guiding end cap, the adapter plate connecting this guiding end cap, cutter and energy-absorbing cylinder, one end of this energy-absorbing cylinder is inserted in this guiding end cap, and described cutter comprises some blade parts with the described energy-absorbing cylinder of correspondence; When the other end of energy-absorbing cylinder is subject to axial collision, this energy-absorbing cylinder pressurized inserts this guiding end cap and is cut into some parts by described cutter, then in the bottom reversed bending of guiding end cap, thus absorbs collision energy.
An automobile for collision energy-absorbing device is installed, comprises front side member, collision energy-absorbing device; Collision energy-absorbing device is positioned at the front portion of automobile, in collision process, absorb collision energy, and this collision energy-absorbing device comprises a guiding end cap, connects the adapter plate of this guiding end cap, fixing some cutters on a mounting board and energy-absorbing cylinder; Described guiding end cap comprises an arrival end and a bottom, and this adapter plate also and between the sidewall of guiding end cap forms circular clearance near this arrival end; Described cutter is radially fixed on described adapter plate, and each cutter is provided with the blade part towards described energy-absorbing cylinder, the circular clearance between the edge of the corresponding described adapter plate of this blade part and guiding end cap; One end of described energy-absorbing cylinder is inserted in this circular clearance; The guiding end cap of this collision energy-absorbing device is arranged in front side member, and described energy-absorbing cylinder stretches out the front end of described front side member.
Collision energy-absorbing device of the present invention and be provided with in the automobile of collision energy-absorbing device, collision energy-absorbing device is by energy-absorbing cylinder press-in guiding end cap and reversed bending, and take full advantage of deformation space, space availability ratio reaches 100%; This collision energy-absorbing device make use of multiple energy-absorbing mode, and comprising the inefficacy energy of material, friction energy, compression and flexural deformation can combine, and drastically increases anticollision performance; Other spaces are not taken, easy accessibility after the distortion of this collision energy-absorbing device.
Accompanying drawing explanation
Fig. 1 is the three-dimensional exploded view of collision energy-absorbing device of the present invention.
Fig. 2 is the schematic perspective view after the collision energy-absorbing device assembling trailing portion of Fig. 1 is cut open.
Fig. 3 to Fig. 5 is the schematic perspective view of collision energy-absorbing device by collision deformation process of Fig. 2.
Fig. 6 is the front elevation after the collision energy-absorbing device assembling of Fig. 1.
Fig. 7 is the cutaway view of the collision energy-absorbing device A-A along the line of Fig. 6.
Fig. 8 to Figure 10 is the generalized section of collision energy-absorbing device by collision deformation process of Fig. 7.
Detailed description of the invention
In order to make technical scheme of the present invention more clearly show, below in conjunction with accompanying drawing, the invention will be further described.
Please refer to Fig. 1, the collision energy-absorbing device 100 of a kind of preferred embodiment of the present invention, for being arranged on the front portion of automobile, by enough absorption collision energies, effectively improving the safety performance of vehicle body.This collision energy-absorbing device 100 comprises a guiding end cap 10, connects the adapter plate 20 of this guiding end cap 10, cutter 30 and energy-absorbing cylinder 40.One end of this energy-absorbing cylinder 40 is inserted in this guiding end cap 10, and described cutter 30 has some blade parts with the described energy-absorbing cylinder 40 of correspondence.When the other end of energy-absorbing cylinder 40 is subject to axial collision, this energy-absorbing cylinder 40 pressurized inserts this guiding end cap 10 and is cut into some parts by described cutter 30, then in the bottom reversed bending of guiding end cap 10, thus absorbs collision energy.
The profile of described guiding end cap 10 is cylindrically arranged, and this guiding end cap 10 comprises arrival end 11 and a bottom 12.This arrival end 11 is arranged in opening.The middle inside of this bottom 12 extends a lug boss 13 towards arrival end 11.This lug boss 13 is in cylindric setting.In other embodiments, this lug boss 13 can be coniform or the setting of other shape.The annular section of described bottom 12 between lug boss 13 and sidewall (figure does not mark) curved setting; Particularly, the cross section semicircular in shape of this annular section is arranged.Described lug boss 13 is provided with mounting hole 130 and connects for described adapter plate 20 near the end of arrival end 11.In the present embodiment, observe described bottom 12 from outside, the central part indent of this bottom 12 forms described lug boss 13, the curved projection of peripheral part of this bottom 12.Understandably, the outer surface of this bottom 12 is not limited to arc convex, can also be flat shape etc., if ensure bottom 12 middle inside has lug boss 13, annular section is curved arranges.This guiding end cap 10 can adopt steel or aluminium alloy structure, is processed by the mode of cold stamping or casting.The inner wall surface of this guiding end cap 10 has higher roughness, thus increases the friction force between energy-absorbing cylinder 40; Particularly, the roughness of the inwall of this guiding end cap 10 is greater than 25 μm.
Described adapter plate 20 is arranged on lug boss 13.This adapter plate 20 is near the arrival end 11 of guiding end cap 10.Between the edge of this adapter plate 20 and the sidewall of guiding end cap 10, interval is arranged, and forms circular clearance and passes through for energy-absorbing cylinder 40.This adapter plate 20 is fixed by a connecting element 25 and lug boss 13.Particularly, the rounded setting of this adapter plate 20, this connecting element 25 is screw, and this connecting element 25 is through screwing togather fixing with lug boss 13 behind the center of adapter plate 20.Understandably, this adapter plate 20 can be arranged for shape changeable.Adapter plate 20 has higher intensity, after ensureing that energy-absorbing cylinder 40 enters the reversed bending of guiding end cap 10, contacts and compressive deformation occurs, the fold of Formation rule with adapter plate 20.
Described cutter 30 is fixed on described adapter plate 20.Described cutter 30 is provided with the blade part 31 towards energy-absorbing cylinder 40.In the present embodiment, the quantity of described cutter 30 is multiple, and the quantity that each cutter 30 is provided with blade part 31 is one, the different parts of the corresponding energy-absorbing cylinder 40 of each blade part 31.The elongated setting of each cutter 30, from the radial installation in the center of adapter plate 20; Described blade part 31 is arranged on cutter 30 on one end of the inwall of guiding end cap 10, the circular clearance namely between corresponding adapter plate 20 and guiding end cap 10.Particularly, the quantity of described cutter 30 is four.Each cutter 30 is provided with tapped bore, is fixed on adapter plate 20 by cutter 30 by screw 35.For convenience of installing, described cutter 30 is arranged on the side of described adapter plate 20 towards lug boss 13.
Understandably, when cutter 30 only arranges one blade part 31, the quantity of described cutter 30 can also be set to three, five, six etc. as required; For ensureing that energy-absorbing cylinder 40 oppositely bends after singulation better, the quantity of described cutter 30 is equal to or greater than three for good; And reasonably cutter 30 distributes, better can realize the cutting of energy-absorbing cylinder 40, cutter 30 self can play the effect of reinforcement to adapter plate 20 simultaneously.In other embodiments, described cutter 30 can be set to one, and such as make cutter 30 one-body molded by an annular connecting portion, this cutter 30 is provided with some described blade parts 31.
Described energy-absorbing cylinder 40 is cylindrically arranged, and one end of this energy-absorbing cylinder 40 is inserted in the circular clearance between adapter plate 20 and guiding end cap 10.In the present embodiment, this energy-absorbing cylinder 40 is made up of toughness materials such as steel, aluminum alloy and polymer composites, can be specifically the aluminium alloy extrusions of extrusion process.
Please again consult Fig. 2 to Fig. 5, Fig. 7 to Figure 10, during use, this collision energy-absorbing device 100 is arranged in front side member, and is connected firmly by the mode such as bolt or gas shield welding.After having assembled, described guiding end cap 10 embeds rail inner completely, and outside face and the longeron front end of adapter plate 20 keep substantially concordant.Described energy-absorbing cylinder 40 is positioned at the front end of longeron, and its total length is distortion energy-absorbing space, is now initial condition.In other embodiments, energy-absorbing cylinder 40 takes the mode of interference fit or splicing to carry out assembly connection with the inwall of guiding end cap 10, to improve the reliability of connection, avoids energy-absorbing cylinder 40 because the vibrations of automobile are deviate from from guiding end cap 10.
When the front end of energy-absorbing cylinder 40 is subject to the effect of impact load, energy-absorbing cylinder 40 slides along the circular clearance between adapter plate 20 and guiding end cap 10, come in contact with the blade part 31 of cutter 30, under the effect of blade part 31, energy-absorbing cylinder 40 is cut open some parts, and the energy being out of shape and can absorbing vehicle collision that lost efficacy occurs the material of energy-absorbing cylinder 40;
When the front end of energy-absorbing cylinder 40 continues to be impacted, along with energy-absorbing cylinder 40 is by constantly press-in guiding end cap 10, the coarse inwall generation relative motion of energy-absorbing cylinder 40 and guiding end cap 10, cliding friction can be used in the energy absorbing vehicle collision;
After energy-absorbing cylinder 40 length entered in guiding end cap 10 exceedes certain distance, energy-absorbing cylinder 40 occurs bending and deformation along the annular section of the arc of the bottom 12 of guiding end cap 10; Meanwhile, still there is violent rubbing effect with the coarse inwall of guiding end cap 10 in the surface of energy-absorbing cylinder 40, thus the flexural deformation that in this stage, material passes through and friction force can absorb the energy of vehicle collision widely.
Finally, after the most of length of energy-absorbing cylinder 40 all enters guiding end cap 10, material reversed bending under the induction of guiding end cap 10 of energy-absorbing cylinder 40, and final and adapter plate 20 comes in contact, along with the increase of bulged-in energy-absorbing cylinder 40 material, the material fronts generation unstability of reversed bending, forms fold from level to level; The compressive deformation that in this stage, material passes through significantly can absorb the energy of vehicle collision.
Collision energy-absorbing device 100 of the present invention, is positioned at the front portion of automobile, in collision process, absorbs collision energy; This automobile being provided with collision energy-absorbing device comprises front side member and described collision energy-absorbing device 100.This collision energy-absorbing device 100 is pressed into guiding end cap 10 and reversed bending by energy-absorbing cylinder 40, and take full advantage of deformation space, space availability ratio is high, reaches the degree of utilization of 100%; And this collision energy-absorbing device 100 make use of multiple energy-absorbing mode, comprising the inefficacy energy of material, friction energy, compression and flexural deformation can combine, and drastically increases anticollision performance; And multiple energy-absorbing mode also ensure that carrying is stable in collision process, load curve fluctuation is little, and load increases gradually, has very large benefit for the strength limit giving full play to automobile longitudinal beam structure.Finally, after distortion, all material is all included in guiding end cap 10 with adapter plate 20, can not take other spaces, be convenient to dismounting, be convenient for changing.And the guiding end cap 10 of collision energy-absorbing device 100 mode inserted in front side member can improve the load-carrying capacity of front side member.
The above embodiment only have expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a collision energy-absorbing device, is characterized in that: comprise a guiding end cap, the adapter plate connecting this guiding end cap, cutter and energy-absorbing cylinder, and one end of this energy-absorbing cylinder is inserted in this guiding end cap, and described cutter comprises some blade parts with the described energy-absorbing cylinder of correspondence; When the other end of energy-absorbing cylinder is subject to axial collision, this energy-absorbing cylinder pressurized inserts this guiding end cap and is cut into some parts by described cutter, then in the bottom reversed bending of guiding end cap, thus absorbs collision energy.
2. collision energy-absorbing device according to claim 1, is characterized in that: described guiding end cap comprises an arrival end and a bottom, and the middle inside of this bottom extends a lug boss towards arrival end, and described adapter plate is arranged on this lug boss.
3. collision energy-absorbing device according to claim 2, is characterized in that: described lug boss is cylindric setting, and this lug boss is provided with mounting hole near the end of arrival end and connects for described adapter plate.
4. collision energy-absorbing device according to claim 2, is characterized in that: the curved setting of the annular section of described bottom between lug boss and sidewall.
5. collision energy-absorbing device according to claim 1, is characterized in that: the roughness of the inwall of described guiding end cap is greater than 25 μm, to increase the friction force between guiding end cap and energy-absorbing cylinder.
6. collision energy-absorbing device according to claim 1, is characterized in that: form circular clearance between the edge of described adapter plate and the sidewall of guiding end cap and pass through for described energy-absorbing cylinder.
7. collision energy-absorbing device according to claim 1, is characterized in that: the quantity of described cutter is equal to or greater than three, and each cutter arranges a blade part.
8. an automobile for collision energy-absorbing device is installed, comprises front side member, collision energy-absorbing device; Collision energy-absorbing device is positioned at the front portion of automobile, in collision process, absorb collision energy, it is characterized in that: this collision energy-absorbing device comprises a guiding end cap, connects the adapter plate of this guiding end cap, fixing some cutters on a mounting board and energy-absorbing cylinder; Described guiding end cap comprises an arrival end and a bottom, and this adapter plate also and between the sidewall of guiding end cap forms circular clearance near this arrival end; Described cutter is radially fixed on described adapter plate, and each cutter is provided with the blade part towards described energy-absorbing cylinder, the circular clearance between the edge of the corresponding described adapter plate of this blade part and guiding end cap; One end of described energy-absorbing cylinder is inserted in this circular clearance; The guiding end cap of this collision energy-absorbing device is arranged in front side member, and described energy-absorbing cylinder stretches out the front end of described front side member.
9. the automobile being provided with collision energy-absorbing device according to claim 8, is characterized in that: the middle inside of the bottom of described guiding end cap extends a lug boss towards arrival end, and described adapter plate is arranged on this lug boss; The curved setting of the annular section of described bottom between lug boss and sidewall.
10. the automobile being provided with collision energy-absorbing device according to claim 8, is characterized in that: the roughness of the inwall of described guiding end cap is greater than 25 μm, to increase the friction force between guiding end cap and energy-absorbing cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510583423.5A CN105034998B (en) | 2015-09-15 | 2015-09-15 | Bump energy-absorbing device and automobile with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510583423.5A CN105034998B (en) | 2015-09-15 | 2015-09-15 | Bump energy-absorbing device and automobile with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105034998A true CN105034998A (en) | 2015-11-11 |
| CN105034998B CN105034998B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510583423.5A Expired - Fee Related CN105034998B (en) | 2015-09-15 | 2015-09-15 | Bump energy-absorbing device and automobile with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905056A (en) * | 2016-06-02 | 2016-08-31 | 上海交通大学 | Impacting energy absorption device based on composite pipe cutting inward-turning crushing |
| CN111469789A (en) * | 2020-04-30 | 2020-07-31 | 中国飞机强度研究所 | Combined collision energy absorption structure and application method thereof |
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| WO2012067526A1 (en) * | 2010-11-16 | 2012-05-24 | Axtone Spółka Z Ograniczoną Odpowiedzialnością | Coupler assembly for coupling railway wagons |
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2015
- 2015-09-15 CN CN201510583423.5A patent/CN105034998B/en not_active Expired - Fee Related
Patent Citations (7)
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| WO1994007051A1 (en) * | 1992-09-21 | 1994-03-31 | Sintram Ltd. | Energy absorbing device |
| DE4404569A1 (en) * | 1993-02-25 | 1994-09-01 | Volkswagen Ag | Deformation element working according to the inversion principle |
| DE19623449A1 (en) * | 1996-06-12 | 1998-01-02 | Daimler Benz Ag | Tube for motor vehicles used in absorption of impact energy in event of collision |
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| CN102770309A (en) * | 2010-02-26 | 2012-11-07 | 罗伯特·博世有限公司 | Crashbox for a motor vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905056A (en) * | 2016-06-02 | 2016-08-31 | 上海交通大学 | Impacting energy absorption device based on composite pipe cutting inward-turning crushing |
| WO2017206546A1 (en) * | 2016-06-02 | 2017-12-07 | 上海交通大学 | Highly efficient impact energy absorber that absorbs energy by means of composite pipe inward-folded damage |
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| US10480603B2 (en) | 2016-06-02 | 2019-11-19 | Shanghai Jiaotong University | Shock absorber based on the cutting, inward-folding and crushing of composite tube |
| CN111469789A (en) * | 2020-04-30 | 2020-07-31 | 中国飞机强度研究所 | Combined collision energy absorption structure and application method thereof |
| CN111469789B (en) * | 2020-04-30 | 2023-06-23 | 中国飞机强度研究所 | Combined collision energy absorption structure and application method thereof |
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| Publication number | Publication date |
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| CN105034998B (en) | 2017-04-19 |
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