CN102381269A - Automobile bumper energy absorption box with stable performance - Google Patents
Automobile bumper energy absorption box with stable performance Download PDFInfo
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- CN102381269A CN102381269A CN2011102376701A CN201110237670A CN102381269A CN 102381269 A CN102381269 A CN 102381269A CN 2011102376701 A CN2011102376701 A CN 2011102376701A CN 201110237670 A CN201110237670 A CN 201110237670A CN 102381269 A CN102381269 A CN 102381269A
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Abstract
The invention relates to an automobile bumper energy absorption box with stable performance, which is used for solving the problems easily generated in the collision process of the energy absorption box made of steel materials. The energy absorption box consists of an energy absorption post and an energy absorption device, wherein both the energy absorption post and the energy absorption device are in a round platform-shaped funnel type, the small opening end of the energy absorption post is inserted into the small opening end of the energy absorption device, and the energy absorption post is welded with the energy absorption device. Through changing the structural design of the energy absorption box, the stability of the energy absorption box during the collision pressing crushing is greatly improved on the premise that the collision performance meets the requirement, simultaneously, the structure is simple, and the weight is reduced through being compared with that of the common energy absorption box. The cross section of the energy absorption box is in a round structure, so the diameter can be freely changed according to the design space of a bumper, and the structural deformation energy absorption mode is not influenced. The design possibility of different material thicknesses is provided for design personnel through the screwing pressing technology, and the energy absorption requirements of different automobile types can be met.
Description
Technical field
The present invention relates to a kind of Vehicular device, particularly be applicable to the Federal bumper energy-absorbing box of various car stable performances, belong to automobile technical field.
Background technology
Along with improving constantly of state-of-art fast development and people's life; Increasing various automobile gets into huge numbers of families as transportation and walking-replacing tool, improves safety and the economy of Automobile manufacturing of automobile under collision situation and has become the important topic that automobile is researched and developed.Federal bumper is a vitals of when automobile crashes, protecting occupant safety to greatest extent, and its keystone configuration comprises crossbeam and connects the energy-absorbing box between crossbeam and the car body adapter plate.The energy-absorbing box is to receive coming abundant absorbing impact kinetic energy with its compressive deformation when clashing into and reducing maximum impact to relax the parts that impact at automobile.For improving the energy-absorbing effect of energy-absorbing box, manufacturing enterprise normally starts with from several aspects such as the mechanical property that improves material, the cross dimensions that strengthens the energy-absorbing box and change energy-absorbing box planforms.Energy-absorbing box commonly used is at present processed by two kinds of materials: a kind of is to adopt steel, fastens about two U type blanked parts or up and down, protects being welded each other by two, reaches energy-absorbing effect through design energy-absorbing muscle on two U type structures.The problem that this energy-absorbing box exists; The one, because two blanked parts need two guarantor's welderings to connect; Very about-face can be brought to material property in the commissure, makes its material property unstable, when bumping; Because the change of material property and welded seam area is inconsistent, the different part results of identical product are variant; The 2nd, the energy-absorbing box is bumping when carrying out conquassation, because the design of itself structure and energy-absorbing muscle makes it be difficult to have symmetry, in collision process, is prone to take place the energy-absorbing box and tilts or fall partially, cause distortion not exclusively, energy-absorbing is insufficient.Another kind of energy-absorbing box is selected aluminium for use, and mostly aluminium is extrusion forming, need not weld seam, and generally does not carry out the design of reinforced rib, and its collision performance is relatively stable, but its cost is more expensive much than steel, the cost raising, and this is that some low and middle-end vehicles are reluctant the selection made.
Summary of the invention
The present invention is used for solving the defective of above-mentioned prior art and provides a kind of common iron that uses to reach the Federal bumper energy-absorbing box in the unlikely run-off the straight of collision process or the stable performance of falling partially.
The alleged problem of the present invention solves through following technical scheme:
A kind of Federal bumper energy-absorbing box of stable performance, its special feature is: it is made up of energy-absorbing post and energy absorber, and energy-absorbing post and energy absorber are the truncated cone-shaped funnel-form, and the osculum end of energy-absorbing post inserts the osculum end of energy absorber, both mutual seam.
The Federal bumper energy-absorbing box of above-mentioned stable performance, said energy-absorbing post big opening end diameter dimension D1 is 30-120mm, and cone angle beta is 17 o-21o, and said energy absorber big opening end diameter dimension D3 is 30-120mm, and cone angle is 36 o-44o.
The Federal bumper energy-absorbing box of above-mentioned stable performance, the big opening end end face of said energy-absorbing post is the inclined-plane, and the high side size H1 of energy-absorbing post is 25-150mm, and oblique angle δ is 0-5 o; The length dimension H3 of said energy absorber is 25-150mm, and the distance L of said energy-absorbing post osculum end distance energy absorber osculum end is 5-25mm.
The Federal bumper energy-absorbing box of above-mentioned stable performance, the yield strength of said energy-absorbing post are greater than 200Mpa, and the yield strength of energy absorber is greater than 150 Mpa, more than the yield strength 20Mpa of the yield strength of energy-absorbing post greater than energy absorber.
The present invention is directed to steel energy-absorbing box and in collision process, be prone to take place energy-absorbing box inclination or inclined to one side; Cause distortion not exclusively, the inadequate problem of energy-absorbing improves, the Federal bumper energy-absorbing box that designs that a kind of collision performance is stable, vertical not run-off the straight of conquassation only takes place or fall partially in the collision process.This product under the prerequisite that collision performance meets the demands, has improved the stability when the energy-absorbing box collides conquassation through changing the structure design of energy-absorbing box greatly; Simultaneously simple in structure, the weight saving of common on year-on-year basis energy-absorbing box; Because its cross section is a circular configuration, can arbitrarily change diameter according to the bumper/spoiler design space, does not influence the structural distortion energy-absorbing modes; Its spinning process provides to the designer and has not waited the thick design-calculated possibility of material, to adapt to different automobile types energy-absorbing needs.Through cae analysis and verification experimental verification; This kind energy-absorbing box deformation pattern and expected design are identical basically; Can help the designer to estimate energy-absorbing box deformation pattern, and change energy-absorbing box sectional dimension and thickness, to satisfy different vehicle collision requirement according to the vehicle structure needs.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a schematic perspective view of the present invention;
Fig. 3 is an energy-absorbing box distortion F/s scheme drawing;
Fig. 4 is an energy-absorbing box distortion subordinate phase scheme drawing.
Label is following in the accompanying drawing: 1. energy-absorbing post, 2. energy absorber, 3. vehicle body adapter plate.
The specific embodiment
Referring to Fig. 1, Fig. 2; Institute of the present invention Federal bumper energy-absorbing box is made up of energy-absorbing post 1 and energy absorber 2, and energy-absorbing post and energy absorber are the truncated cone-shaped funnel-form, and the osculum end of energy-absorbing post inserts the osculum end of energy absorber; The insertion distance L is 5-25mm, is connected by circumferential weld between energy-absorbing post, the energy absorber.Energy-absorbing post big opening end and crossbeam seam, energy absorber big opening end and the seam of vehicle body adapter plate.The physical dimension of energy-absorbing post and energy absorber is following: energy-absorbing post 1 big opening end diameter dimension D1 is 30-120mm; Cone angle beta is 17 o-21o; Energy-absorbing post big opening end end face is the inclined-plane, and oblique angle δ is 0-5 o, and the high side size H1 of energy-absorbing post is 25-150mm (the big opening end end face is the inclined-plane); Said energy absorber 2 big opening end face diameter dimension D3 are 30-120mm, and cone angle is 36 o-44o, and the length dimension H3 of energy absorber 2 is 25-150mm.The yield strength of its energy-absorbing post is greater than 200Mpa, and the yield strength of energy absorber is greater than 150 Mpa, and the yield strength of energy-absorbing post is greater than more than the yield strength 20Mpa of energy absorber.
Referring to Fig. 3, Fig. 4, the present invention common two steel U type blanked parts about or the energy-absorbing box structure that fastens up and down, be modified into two circular funnel structures before and after seam form.When collision takes place; Because energy absorber 2 intensity are less than energy-absorbing post 1 intensity; Power passes to energy absorber 2 by energy-absorbing post 1; Energy absorber 2 is from beginning distortion with energy-absorbing post 1 junction, and the distortion of energy absorber 2 is divided into two stages, and first stage is that the 1 osculum end conquassation of energy-absorbing post is as shown in Figure 3 to vehicle body adapter plate 3 places.Second stage is key problem in technology point of the present invention: the distortion of common energy-absorbing box is generally conquassation and finishes to vehicle body adapter plate place; And constructional feature of the present invention is after first stage distortion is accomplished, not finish; The transmission that energy absorber 2 will be pressed in energy-absorbing post 1 power continues distortion down; Funnel shaped until energy absorber 2 is inverted, and the osculum end of energy-absorbing post 1 and the osculum end of energy absorber 2 conquassation to energy absorber simultaneously are inverted as shown in Figure 4.Distortion through two stages; The energy-absorbing box is out of shape complete and has absorbed enough energy; This kind deformation pattern has guaranteed that also vertical not run-off the straight of conquassation or inclined to one side only takes place the energy-absorbing box in collision process; The round section of energy-absorbing post and energy absorber has guaranteed that energy-absorbing box structural entity is stressed evenly, has avoided causing the energy-absorbing box to tilt because of local pressure is excessive and falling partially.The round section of energy absorber of the present invention and energy-absorbing post is beneficial to according to different crossbeams and vehicle body installation dimension design energy-absorbing box and cuts the shape size.
Energy absorber of the present invention and energy-absorbing post junction have only a circle circumferential weld, and this face of weld is vertical with deformation direction, can not influence the conquassation process of energy-absorbing box in the collision process owing to welding reason change material property, cause the instability of collision performance and inconsistent.
The energy-absorbing post of structure of the present invention and energy absorber all produce with spinning process and make; Its process characteristic is can process not wait thick of material; The designer can according to the different automobile types needs to design thicken, subtract thick, change thickness in zones of different, reach different energy-absorbings and require and energy-absorbing effect.
The present invention under the prerequisite that collision performance meets the demands, has improved the stability of energy-absorbing box when the collision conquassation through changing the structure design of energy-absorbing box greatly; Its common on year-on-year basis energy-absorbing box simple in structure weight saving.Through cae analysis and verification experimental verification, this kind energy-absorbing box deformation pattern and expected design are identical basically, can help the designer to estimate energy-absorbing box deformation pattern, and satisfy different vehicle collision requirement according to vehicle structure needs change energy-absorbing box sectional dimension and thickness.
Below provide a concrete embodiment of the present invention:
Energy-absorbing post big opening end diameter dimension D1 is 53.558mm, and cone angle beta is 19.5o, and big opening end end face oblique angle δ is 2.524o, and the high side size H1 of energy-absorbing post is 62.042mm; Said energy absorber 2 big opening end diameter dimension D3 are 89.195mm, and cone angle is 40.213o, and the length dimension H3 of energy absorber is 65.11mm; The distance L of energy-absorbing post osculum end distance energy absorber osculum end is 6mm; The yield strength of energy-absorbing post 1 is 200Mpa, and the yield strength of energy absorber 2 is 150Mpa.
Claims (4)
1. the Federal bumper energy-absorbing box of a stable performance; It is characterized in that: form by energy-absorbing post (1) and energy absorber (2); Energy-absorbing post (1) and energy absorber (2) are the truncated cone-shaped funnel-form, and the osculum end of energy-absorbing post (1) inserts the osculum end of energy absorber (2), both mutual seam.
2. the Federal bumper energy-absorbing box of stable performance according to claim 1; It is characterized in that: said energy-absorbing post (1) big opening end diameter dimension D1 is 30-120mm; Cone angle beta is 17 o-21o, and said energy absorber (2) big opening end diameter dimension D3 is 30-120mm, and cone angle is 36 o-44o.
3. the Federal bumper energy-absorbing box of stable performance according to claim 1 and 2, it is characterized in that: the big opening end end face of said energy-absorbing post (1) is the inclined-plane, and the high side size H1 of energy-absorbing post (1) is 25-150mm, and oblique angle δ is 0-5o; The length dimension H3 of said energy absorber (2) is 25-150mm, and the distance L of said energy-absorbing post (1) osculum end distance energy absorber (2) osculum end is 5-25mm.
4. the Federal bumper energy-absorbing box of stable performance according to claim 3; It is characterized in that: the yield strength of said energy-absorbing post (1) is greater than 200Mpa; The yield strength of energy absorber (2) is greater than 150 Mpa, the yield strength of energy-absorbing post greater than the yield strength of energy absorber more than 20Mpa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110237670.1A CN102381269B (en) | 2011-08-18 | 2011-08-18 | Automobile bumper energy absorption box with stable performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110237670.1A CN102381269B (en) | 2011-08-18 | 2011-08-18 | Automobile bumper energy absorption box with stable performance |
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| CN102381269A true CN102381269A (en) | 2012-03-21 |
| CN102381269B CN102381269B (en) | 2014-08-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600016A (en) * | 2017-09-18 | 2018-01-19 | 华侨大学 | A kind of automobile collision energy absorber |
| CN107972617A (en) * | 2017-12-14 | 2018-05-01 | 南京理工大学 | Performance adjustable automobile collision energy-absorbing device |
| CN115467272A (en) * | 2022-10-20 | 2022-12-13 | 山东高速股份有限公司 | Energy absorption method for extrusion port and anti-collision pad structure |
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| JP3327030B2 (en) * | 1995-01-27 | 2002-09-24 | トヨタ自動車株式会社 | Impact energy absorbing device and its mounting structure |
| CN2886288Y (en) * | 2006-04-24 | 2007-04-04 | 徐幸福 | Mechanical device capable of reducing impact force |
| CN201099214Y (en) * | 2007-08-30 | 2008-08-13 | 赵连柱 | Crash-proof apparatus |
| CN101432168A (en) * | 2004-09-07 | 2009-05-13 | 沙普公司 | Plastic energy management beam |
| JP2010065802A (en) * | 2008-09-12 | 2010-03-25 | Toray Ind Inc | Tubular energy absorber |
| CN202193049U (en) * | 2011-08-18 | 2012-04-18 | 凌云工业股份有限公司 | Energy-absorbing box with stable performance for bumper |
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2011
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4241109A1 (en) * | 1991-12-16 | 1993-06-17 | Volkswagen Ag | Deformation for motor vehicles - has stop positivity engaging round base at the latest at the start of inverted deformation |
| JP3327030B2 (en) * | 1995-01-27 | 2002-09-24 | トヨタ自動車株式会社 | Impact energy absorbing device and its mounting structure |
| CN101432168A (en) * | 2004-09-07 | 2009-05-13 | 沙普公司 | Plastic energy management beam |
| CN2886288Y (en) * | 2006-04-24 | 2007-04-04 | 徐幸福 | Mechanical device capable of reducing impact force |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600016A (en) * | 2017-09-18 | 2018-01-19 | 华侨大学 | A kind of automobile collision energy absorber |
| CN107600016B (en) * | 2017-09-18 | 2023-09-29 | 华侨大学 | Automobile collision energy absorbing device |
| CN107972617A (en) * | 2017-12-14 | 2018-05-01 | 南京理工大学 | Performance adjustable automobile collision energy-absorbing device |
| CN107972617B (en) * | 2017-12-14 | 2023-08-22 | 南京理工大学 | Performance-adjustable automobile collision energy absorbing device |
| CN115467272A (en) * | 2022-10-20 | 2022-12-13 | 山东高速股份有限公司 | Energy absorption method for extrusion port and anti-collision pad structure |
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| CN102381269B (en) | 2014-08-13 |
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