CN102862537A - Shrinkage-type automobile energy absorption beam - Google Patents
Shrinkage-type automobile energy absorption beam Download PDFInfo
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- CN102862537A CN102862537A CN2012103622587A CN201210362258A CN102862537A CN 102862537 A CN102862537 A CN 102862537A CN 2012103622587 A CN2012103622587 A CN 2012103622587A CN 201210362258 A CN201210362258 A CN 201210362258A CN 102862537 A CN102862537 A CN 102862537A
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- round pipe
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Abstract
The invention discloses a shrinkage-type automobile energy absorption beam which comprises a mounting bracket, a shrinkage beam and a fixed bracket, wherein the shrinkage beam comprises a first round pipe, a second round pipe and a sealed annular connecting piece; the lower end of the first round pipe is fixed on the mounting bracket; the internal diameter of the first round pipe is more than the external diameter of the second round pipe; the upper end of the first round pipe is connected with the lower end of the second round pipe by the sealed annular connecting piece to form a step-shaped shrinkage beam; the end face of the upper end of the second round pipe is fixed on the fixed bracket; and the whole shrinkage-type automobile energy absorption beam is arranged on the junctions of the two ends of an automobile beam and a longitudinal beam. The shrinkage-type automobile energy absorption beam has the beneficial effects of low manufacture cost and simple manufacture technology, instantaneous impact rigidity can be effectively reduced in the collision process, the stable plastic deformation is generated, collision energy is fully adsorbed, the safety of passengers and automobile body is guaranteed, and the purpose of improving the collision-proof safety of a vehicle is achieved.
Description
Technical field
The present invention relates to a kind of shrinkage type automobile energy-absorbing beam.
Background technology
Automobile collision energy absorber is the critical component of automobile, occupies very important position in vehicle passive safety.The energy that produces when automobile bumps mainly is that the plastic deformation by energy absorption device absorbs.In the existing body structure, the collision energy-absorbing device of installing in the vehicle mainly comprises energy-absorbing beam etc.The energy-absorbing beam of design has following requirement, and when automobile generation low speed head-on crash, the energy-absorbing beam absorbs whole impact kinetic energies, and the impact of energy-absorbing beam can not surpass the bump License Value, in order to avoid be delivered to the parts such as front side member, causes extra destruction; When automobile generation high-speed crash, the energy-absorbing beam is answered absorbed energy as much as possible, in the collision process, and stressed even distribution, stabilization.
The day for announcing is on July 4th, 2012, and notification number is that the Chinese patent of CN202294642U discloses a kind of energy-absorption box device, and described energy-absorption box device comprises: shell and inner honeycomb core form the honeycomb hole longitudinal arrangement of honeycomb core.Its advantage is that this energy-absorption box increases aluminium honeycomb core makes the energy-absorption box stabilization, reaches the purpose of high energy-absorbing when head-on crash occurs.Its weak point is that this energy absorption device adds after the honeycomb core, and the longitudinal rigidity of energy-absorption box self is excessive.When bumping, the impact of this energy-absorption box surpasses the bump License Value easily, is directly delivered to the vitals such as front side member, and energy absorption device has just been lost its due energy-absorbing effect, so that front side member and vehicle body be damaged, and injures at last occupant's life security.
Summary of the invention
Present automotive body structure energy-absorbing beam energy-absorbing effect in collision process is undesirable in order to solve, collision process is out of shape unsettled problem, and the present invention proposes a kind ofly can fully absorb the distortion of collision energy, stabilized contraction in automobile collision procedure, protect the shrinkage type automobile energy-absorbing beam of occupant and vehicle safety to greatest extent.
Shrinkage type automobile energy-absorbing beam of the present invention, it is characterized in that: comprise mounting bracket, contraction beam and fixed support, described contraction beam comprises the first pipe, the second pipe and closed ring attaching parts, the lower end of described the first pipe is fixed on the described mounting bracket, the internal diameter of described the first pipe is greater than the external diameter of described the second pipe, and the upper end of described the first pipe is connected with the lower end of described the second pipe by the closed ring attaching parts, form step-like contraction beam, the upper end end face of described the second pipe is fixed on the described fixed support; Whole described shrinkage type automobile energy-absorbing beam is installed in the junction of vehicle beam two ends and longeron.
Further, the length ratio of described the second pipe and described the first pipe is between 1.8:1～2.2:1.
Further, the central axes of described the first pipe, described the second pipe and described closed ring attaching parts.
Perhaps, the angle of the central axis of the central axis of described the first pipe and described the second pipe is acute angle.
Further, the wall thickness of described the first pipe, described the second pipe and described closed ring attaching parts is identical.
Further, on described the second pipe some grooves are set circumferentially.
Further, the caliber of the width of described closed ring attaching parts, described the first pipe and described the second pipe and wall thickness require to determine according to vehicle parameter and vehicle safety.
The intensity of the material that the intensity of the material that described fixed support is selected is selected greater than described contraction beam.
When vehicle generation head-on crash, crossbeam passes to fixed support and contraction beam with impact, the free flop phenomenon of pipe at first occurs in contraction beam, along with the pipe upset, the second pipe turns up the most at last and forms double-deck pipe and be nested in the first pipe inner, and the conquassation that makes the energy-absorbing beam freely is turned to three layers of pipe together by conquassation from the first pipe, enters at last the densification stage, fully Folding Deformation reaches high purpose than energy-absorbing; Fixed support can make the contraction beam pipe keep cross-sectional plane complete in collision process, the pipe of contraction beam is freely overturn carry out smoothly.
The invention has the beneficial effects as follows: cheap for manufacturing cost, manufacturing process is simple, can effectively reduce instantaneous impact stiffness in collision process; plastic deformation occurs to stablize; fully absorb collision energy, protection occupant and vehicle body safety reach the purpose that improves the safety of vehicle crashworthiness.
Description of drawings
Fig. 1 is constructional drawing of the present invention (the first pipe, described the second pipe central axis angle are the acute angle state).
Fig. 2 is constructional drawing of the present invention (the first pipe, described the second pipe central axes state).
Fig. 3 is the A-A cutaway view of Fig. 1.
Fig. 4 is the partial enlarged drawing of the closed ring attaching parts of Fig. 2.
Fig. 5 is the contraction beam of the present invention scheme drawing (the second pipe does not insert the state in the first pipe) that freely overturns.
Fig. 6 is the contraction beam of the present invention scheme drawing (the second pipe inserts the state in the first pipe) that freely overturns.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing
With reference to accompanying drawing:
Shrinkage type automobile energy-absorbing beam of the present invention, comprise mounting bracket 1, contraction beam 2 and fixed support 3, described contraction beam 2 comprises the first pipe 21, the second pipe 22 and closed ring attaching parts, the lower end of described the first pipe 21 is fixed on the described mounting bracket 1, the internal diameter of described the first pipe 21 is greater than the external diameter of described the second pipe 22, and the upper end of described the first pipe 21 is connected with the lower end of described the second pipe 22 by closed ring attaching parts 23, form step-like contraction beam 2, the upper end end face of described the second pipe 22 is fixed on the described fixed support 3; Whole described shrinkage type automobile energy-absorbing beam is installed in the junction of vehicle beam two ends and longeron.
Further, the length ratio of described the second pipe 22 and described the first pipe 21 is between 1.8:1～2.2:1.
Further, the central axes of described the first pipe 21, described the second pipe 22 and described closed ring attaching parts 23.
Perhaps, the angle of the central axis of the central axis of described the first pipe 21 and described the second pipe 22 is acute angle.
Further, the wall thickness of described the first pipe 21, described the second pipe 22 and described closed ring attaching parts 23 is identical.
Further, on described the second pipe 22 some grooves are set circumferentially.
Further, the caliber of the width of described closed ring attaching parts 23, described the first pipe 21 and described the second pipe 22 and wall thickness require to determine according to vehicle parameter and vehicle safety.
The intensity of the material that the intensity of the material that described fixed support 3 is selected is selected greater than described contraction beam 2.
When vehicle generation head-on crash, crossbeam passes to fixed support 3 and contraction beam 2 with impact, the free flop phenomenon of pipe at first occurs in contraction beam 2, along with the pipe upset, the second pipe 22 turns up the most at last and forms double-deck pipe and be nested in the first pipe 21 inside, and the conquassation that makes energy-absorbing beam 2 freely is turned to three layers of pipe together by conquassation from the first pipe 21, enters at last the densification stage, fully Folding Deformation reaches high purpose than energy-absorbing; Fixed support 3 can make contraction beam 2 keep cross-sectional plane complete in collision process, the pipe of contraction beam 2 is freely overturn carry out smoothly.
The described content of this specification sheets embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reaches in those skilled in the art conceives the equivalent technologies means that can expect according to the present invention.
Claims (8)
1. shrinkage type automobile energy-absorbing beam, it is characterized in that: comprise mounting bracket, contraction beam and fixed support, described contraction beam comprises the first pipe, the second pipe and closed ring attaching parts, the lower end of described the first pipe is fixed on the described mounting bracket, the internal diameter of described the first pipe is greater than the external diameter of described the second pipe, and the upper end of described the first pipe is connected with the lower end of described the second pipe by the closed ring attaching parts, form step-like contraction beam, the upper end end face of described the second pipe is fixed on the described fixed support; Whole described shrinkage type automobile energy-absorbing beam is installed in the junction of vehicle beam two ends and longeron.
2. shrinkage type automobile energy-absorbing beam as claimed in claim 1, it is characterized in that: the length ratio of described the second pipe and described the first pipe is between 1.8:1～2.2:1.
3. shrinkage type automobile energy-absorbing beam as claimed in claim 2 is characterized in that: the central axes of described the first pipe, described the second pipe and described closed ring attaching parts.
4. shrinkage type automobile energy-absorbing beam as claimed in claim 2, it is characterized in that: the angle of the central axis of the central axis of described the first pipe and described the second pipe is acute angle.
5. shrinkage type automobile energy-absorbing beam as claimed in claim 3, it is characterized in that: the wall thickness of described the first pipe, described the second pipe and described closed ring attaching parts is identical.
6. shrinkage type automobile energy-absorbing beam as claimed in claim 5 is characterized in that: on described the second pipe some grooves are set circumferentially.
7. shrinkage type automobile energy-absorbing beam as claimed in claim 6 is characterized in that: the caliber of the width of described closed ring attaching parts, described the first pipe and described the second pipe and wall thickness require to determine according to vehicle parameter and vehicle safety.
8. shrinkage type automobile energy-absorbing beam as claimed in claim 7 is characterized in that: the intensity of the material that the intensity of the material that described fixed support is selected is selected greater than described contraction beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103622587A CN102862537A (en) | 2012-09-25 | 2012-09-25 | Shrinkage-type automobile energy absorption beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103622587A CN102862537A (en) | 2012-09-25 | 2012-09-25 | Shrinkage-type automobile energy absorption beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102862537A true CN102862537A (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103622587A Pending CN102862537A (en) | 2012-09-25 | 2012-09-25 | Shrinkage-type automobile energy absorption beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894819A (en) * | 2019-03-25 | 2019-06-18 | 株洲东润兴达科技发展有限公司 | A kind of manufacturing process of energy-absorbing steel cylinder |
| CN111649625A (en) * | 2020-06-03 | 2020-09-11 | 南京理工大学 | Protection component for bottom of vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1578740A (en) * | 2001-09-27 | 2005-02-09 | 沙普公司 | Bumper crush tower with rings of varied strength |
| CN1842448A (en) * | 2003-08-26 | 2006-10-04 | 沙普公司 | Tubular energy management system for absorbing impact energy |
| CN101633348A (en) * | 2008-07-24 | 2010-01-27 | 通用汽车环球科技运作公司 | Efficient joint for vehicle energy-absorbing device |
| CN202879409U (en) * | 2012-09-25 | 2013-04-17 | 浙江工业大学 | Contractile type automobile energy-absorbing beam |
-
2012
- 2012-09-25 CN CN2012103622587A patent/CN102862537A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1578740A (en) * | 2001-09-27 | 2005-02-09 | 沙普公司 | Bumper crush tower with rings of varied strength |
| CN1842448A (en) * | 2003-08-26 | 2006-10-04 | 沙普公司 | Tubular energy management system for absorbing impact energy |
| CN101633348A (en) * | 2008-07-24 | 2010-01-27 | 通用汽车环球科技运作公司 | Efficient joint for vehicle energy-absorbing device |
| CN202879409U (en) * | 2012-09-25 | 2013-04-17 | 浙江工业大学 | Contractile type automobile energy-absorbing beam |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894819A (en) * | 2019-03-25 | 2019-06-18 | 株洲东润兴达科技发展有限公司 | A kind of manufacturing process of energy-absorbing steel cylinder |
| CN109894819B (en) * | 2019-03-25 | 2020-02-07 | 株洲东润兴达科技发展有限公司 | Manufacturing process of energy-absorbing steel cylinder |
| CN111649625A (en) * | 2020-06-03 | 2020-09-11 | 南京理工大学 | Protection component for bottom of vehicle |
| CN111649625B (en) * | 2020-06-03 | 2022-05-13 | 南京理工大学 | Protection component for bottom of vehicle |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130109 |