CN109664849A - A kind of collision energy absorbing box based on paper-cut pattern design - Google Patents
A kind of collision energy absorbing box based on paper-cut pattern design Download PDFInfo
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- CN109664849A CN109664849A CN201910030793.4A CN201910030793A CN109664849A CN 109664849 A CN109664849 A CN 109664849A CN 201910030793 A CN201910030793 A CN 201910030793A CN 109664849 A CN109664849 A CN 109664849A
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- paper
- cut pattern
- collision energy
- energy absorbing
- absorbing box
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Classifications
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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
- B60R19/023—Details
-
- 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
- B60R2019/026—Buffers, i.e. bumpers of limited extent
Abstract
The invention belongs to the vehicles anti-collision structure manufacturing technology fields such as automobile, train, it is related to a kind of collision energy absorbing box based on paper-cut pattern design, according to different designs demand in the manufacturing process of thin-wall pipe, removes excess stock, paper-cut pattern is introduced, specific deformation pattern is finally guided.Compared to common collision energy absorbing box, a thin-wall tube in the present invention can be divided into several similar modules along axial direction, the processing and fabricating of paper-cut pattern be carried out in the folding corner region of each module, to form the folding line lines of different angle according to different paper-cut patterns.The present invention removes excess stock by introducing paper-cut pattern, meets the needs of peak forces, high mean force while realizing collision energy-absorbing kit function；Paper-cut pattern of the invention forms after being convenient for cutting processing, total that can cut by one piece of thin flat plate, and processing technology is relatively simple, greatly reduces processing cost, and the accuracy processed also can be improved.
Description
Technical field
The invention belongs to the vehicles anti-collision structure manufacturing technology fields such as automobile, train, are related to a kind of based on paper-cut figure
The collision energy absorbing box of case design, specially a kind of collision energy-absorbing that kinetic energy can be absorbed during various vehicle collisions are box-packed
It sets, the person and cargo security design when being a kind of accidental impact.
Background technique
It is continued to develop with science and technology, the speed of service of various ground traffic tools is constantly accelerated, and what is come one after another is then collision
Life and property guarantee gradually decrease after accident.Currently, prevent collision have an accident brought by the effective ways of serious consequence be then
It is prone to the collision energy absorbing box of the section installation special designing of contact in all kinds of vehicles.Common collision energy absorbing box is gold
All kinds of different products for belonging to the thin-wall construction pipe fitting of production and its deriving deform the absorption for carrying out impact energy, consumption by it
It dissipates.The application range of such metal thin-wall pipe fitting is very extensive, all refers to it in multiple fields such as space flight and aviation, train, ships
Using, and relatively conventional automobile industry in life has a wide range of applications.
Collision energy absorbing box as playing the main element of protective action in collision accident, generally with bumper, aircraft
The position that some maximum probabilities such as the bilge collide is connected.In collision process, collision energy absorbing box is by the kinetic energy of the vehicles
It is converted into plastic degeneration's energy of its regional area, minimizes the damage of human body, cargo and other positions of tool.Collision is improved to inhale
Energy box number can no doubt effectively improve the energy absorption performance of anti-collision system, but good structural configuration can save design space, mitigate
Total quality provides more structurally sound safety guarantee for traffic above-ground.
The crash-worthiness of collision energy absorbing box is excellent usually to be judged by following index:
(1) there is lower peak load, to ensure that the power of collision incipient stage transmitting did not caused human body or cargo
More injuries；
(2) with higher than energy-absorbing (being defined as absorbing the ratio of energy and sole mass than energy-absorbing)；
(3) there is relatively stable default deformation pattern.
Actual needs is also needed to meet divided by upper standard, for example, production processing flow is relatively simple, cost is relatively low to measure
It produces.However the thin-wall construction currently used for making collision energy absorbing box is mostly square tube or round tube, when this kind of endergonic structure is hit
A high peaks power will be transmitted, reliable and secure guarantee can not be brought to human body and cargo.Therefore, many is produced to be directed to
The structure of thin-walled power-absorbing designs.For the energy absorption efficiency for improving collision energy absorbing box, many designs can introduce Multi cell structure.
For example, in entitled " vehicle energy absorption box based on periodic cellular structure inner core ", Publication No. CN107856743A
In patent, structure is continuously extended with honeycomb unit cell in three-dimensional space, and energy-absorbing density is big, and energy-absorbing stability is high, but there are still
The excessive problem of initial spike power load.And in terms of reducing initial spike power, it is a kind of for making collision energy absorbing box tube wall Varying-thickness
Effective scheme, it is entitled " a kind of vehicle energy absorption box of continuous variable thickness ", in the patent of Publication No. CN204340947U, use
Continuous variable thickness steel plate of the muti-piece from front end to rear end progressive additive forms collision energy absorbing box, due to different Stiffness Distributions, energy
It is enough to carry out successively crumple according to symmetrical foldable and contractile type in collision process, but the shortcomings that this method, is collision energy absorbing box production week
Phase is longer, and technology difficulty is higher, and processing cost is higher, to affect the actual demand of collision energy absorbing box.
In conclusion needing to propose that a kind of designability is stronger at present, processing cost is relatively reasonable, while having good resistance to
The thin-wall pipe of hitting property, more preferably to meet the actual demand of its as collision energy absorbing box.
Summary of the invention
For the demand that more preferably gears to actual circumstances, improve the designability of collision energy absorbing box, the present invention provide a kind of designability it is strong,
With height than energy-absorbing rate, and the collision energy-absorbing box device based on paper-cut pattern design, better choice is provided for actual demand.
The scheme that the present invention solves technical problem is:
A kind of collision energy absorbing box based on paper-cut pattern design, by axially distributed one or more collision energy absorbing box moulds
Block is constituted, and the structure of single collision energy-absorbing cartridge module is as follows: having different polygonal cross-section thin-wall pipes；Pass through paper-cut technology
Material is removed in each folding corner region, carries out the processing and fabricating of paper-cut pattern, to have according to different paper-cut pattern formation
The folding line lines of different angle makes the collision energy absorbing box that the good extension deformation of energy absorption occur in collision process
Mode.
The section of the collision energy absorbing box is the distribution form change polygonal cross-section thin-wall pipe according to paper-cut pattern
Cross sectional shape, such as: the polygonal cross-sections such as quadrangular section, hexagon.
The global shape of the collision energy absorbing box is that cross-section is straight or variable cross-section is inclined along axial direction.
The collision energy absorbing box uses identical paper-cut pattern or different paper-cut patterns along axial individual module；In list
The paper-cut pattern in each corner is identical or different in a module.
The paper-cut pattern includes that the shape of diagonal section region paper-cut pattern is modified, for example, triangle, trapezoidal etc.
Paper-cut pattern.
The paper-cut pattern includes that the size of diagonal section region paper-cut pattern is modified；The collision energy absorbing box mould
The height of block is equal or unequal.
Collision energy absorbing box welding fabrication after wire cutting removes excess stock by multiple material plate, or increase material
Manufacture is integrally formed.
The both ends of the collision energy absorbing box can pass through welding or other end forms and automobile and other vehicles portions
Part connection.
Paper-cut pattern is introduced in the design of thin-walled collision energy-absorbing box structure by the present invention, can be carried out according to different actual demands
Paper-cut pattern design, makes collision energy absorbing box that more reasonable default deformation pattern occur, to reduce peak load, improves energy-absorbing
Ability, this is also core of the invention content.The present invention compares the significant of the common thin-wall pipe that section is rectangle or polygon
Difference is to carry out fabrication design according to specific paper-cut pattern in each folding corner region of polygon, this makes total from outer
It is trapezoidal to be made of multiple in type.Due to introducing paper-cut pattern, the thin-wall pipe for making formation has the folding line of certain angle, energy
Enough make pipe fitting given cross-sectional that stretcher strain in biggish face occur in collision process, obtains the higher extension deformation of energy absorbing efficiency
Mode improves energy-absorbing ratio to improve the crash-worthiness of total.On the other hand, due to the designability of paper-cut pattern
It is relatively strong, therefore different paper-cut pattern designs are carried out under different actual demands, can effectively adapt to various load working conditions makes pipe fitting
Default deformation pattern, is improved than energy-absorbing rate.It is to be noted that paper-cut pattern includes modifying to its paper-cut position, shape,
The present invention is designed along axial using the design of identical paper-cut pattern or different paper-cut patterns.
In addition, the global shape of collision energy absorbing box is that cross-section is straight or variable cross-section is inclined along axial direction.Variable cross-section collision
Energy-absorption box design refer to collision energy absorbing box from the side and be part be rectangle, be partially it is trapezoidal or all trapezoidal, it is such to set
Meter requires have the proportional relationship zoomed in or out between the collision energy-absorbing cartridge module closed on.
In processing technology, integral casting process processing is can be used in collision energy absorbing box of the invention, in the industrial production
This method is low in cost, and casting mould is used multiple times, but the collision energy absorbing box one being designed based on paper-cut pattern
Feature is that designability is stronger, adapts to demand not of the same race, and it is more to can be changed machined parameters, therefore needs continuous change casting mould
Manufacture difficulty has been significantly greatly increased.
Based on the stronger feature of designability, second of production method of the present invention is to cut one or more by numerical control line
The techniques such as cutting and introducing different paper-cut pattern post-processings becomes along axial individual module, wherein the adjacent free margins of each module can be by
Other techniques such as welding are connected with each other.The present invention recommends method for laser welding, can reach accurate docking and the demands such as securely,
Make that preset deformation pattern occurs when structure energy-absorbing, to meet the requirement of collision energy-absorbing.
The third is to carry out metal powder laying, but this current technology is not using relatively advanced increases material manufacturing technology
Full maturity, therefore consuming cost is higher, the time spends longer.
Beneficial effects of the present invention: excess stock is removed by introducing paper-cut pattern, realizes collision energy-absorbing kit function
Meets the needs of peak forces, high mean force simultaneously；The paper-cut pattern of invention is convenient for cutting processing, and total can pass through one piece
It is formed after thin flat plate cutting, processing technology is relatively simple, greatly reduces processing cost, and the accuracy processed also can be improved.
Energy absorption preferably extension deformation pattern can occur for collision energy absorbing box of the invention rather than class in collision process
It is similar to the default diamond deformation pattern or other deformation patterns generated of folding line in origami process.
Detailed description of the invention
Fig. 1 (a) is a kind of plane outspread drawing of the paper-cut pattern collision energy absorbing box of square-section of the present invention；
Fig. 1 (b) is a kind of square-section paper-cut pattern collision energy absorbing box schematic diagram after molding of the present invention；
Fig. 2 is the square-section paper-cut pattern collision energy absorbing box and traditional square collision energy absorbing box load of variable cross-section of the present invention
Displacement curve contrast schematic diagram；
Fig. 3 (a) is a kind of plane outspread drawing of the square-section paper-cut pattern collision energy absorbing box of variable cross-section of the present invention；
Fig. 3 (b) is a kind of square-section paper-cut pattern collision energy absorbing box schematic diagram after molding of variable cross-section of the present invention；
Fig. 4 (a) is a kind of plane exhibition of the square-section paper-cut pattern collision energy absorbing box with cross-section end frame of the present invention
Open figure；
Fig. 4 (b) is that a kind of square-section paper-cut pattern collision energy absorbing box with cross-section end frame of the present invention is after molding
Schematic diagram；
Fig. 5 (a) is a kind of plane outspread drawing of hexagonal cross-section paper-cut pattern collision energy absorbing box of the present invention；
Fig. 5 (b) is a kind of hexagonal cross-section paper-cut pattern collision energy absorbing box schematic diagram after molding of the present invention；
In figure: the paper-cut pattern collision energy absorbing box of 1 square-section；The side of the paper-cut pattern collision energy absorbing box of 2 square-sections
Tee section；3 introduce paper-cut pattern back boundary；The individual module of the paper-cut pattern collision energy absorbing box of 4 square-sections；5 paper-cut patterns
Shape, i.e. removal material shape；6 folding lines carry out free margins docking after removing material；The square-section paper-cut pattern of 7 variable cross-sections
Collision energy absorbing box；The individual module of the square-section paper-cut pattern collision energy absorbing box of 8 variable cross-sections；9 have the side of cross-section end frame
Tee section paper-cut pattern collision energy absorbing box；The single mould of the 10 square-section paper-cut pattern collision energy absorbing boxes with cross-section end frame
Block；11 hexagonal cross-section paper-cut pattern collision energy absorbing boxes；The individual module of 12 hexagonal cross-section paper-cut pattern collision energy absorbing boxes.
Specific embodiment
A specific embodiment of the invention is described in detail below in conjunction with technical solution and attached drawing.
For attached drawing all in the present invention, identical or corresponding element is generally indicated using identical numeral mark.
It should be pointed out that the only expression to the invention illustrative of all figures, and the present invention is not limited to these expressions.This
Outside, each section not necessarily presses actual ratio expression in figure.Under certain conditions, those on understand the present invention without influence or
The detail section that can be impacted to the understanding of other details may be ignored.
A kind of embodiment 1: implementation of the paper-cut pattern collision energy absorbing box of the square-section as shown in Fig. 1 (a) and Fig. 1 (b)
Mode.
The paper-cut pattern collision energy absorbing box of so-called square-section refers to the side of the paper-cut pattern collision energy absorbing box of square-section
Tee section 2 is rectangular.With second of processing technology, the collision energy absorbing box is assembled by two identical modules, and Fig. 1 (a) is
The planar development schematic diagram of the paper-cut pattern collision energy absorbing box of square-section, Fig. 1 (b) are that the paper-cut pattern of square-section collides suction
The molding figure of energy box designs for specifically describing the shape of paper-cut pattern collision energy absorbing box 1 of square-section.In the present invention,
Collision energy absorbing box is using modular design concept, the wherein individual module of the paper-cut pattern collision energy absorbing box of square-section
4 refer to can make up the minimum module of this collision energy absorbing box.If the collision energy absorbing box of different length can be by along axially stacking
A dry individual module obtains.Fig. 1 (a) describes the shape after the expansion of this energy-absorption box, and individual module need not phase along axial length
Together, Fig. 1 (a) is sheet fabrication figure, and wherein dotted line represents the part that will cut, i.e. paper-cut pattern shape 5, solid line represent to
The folding line 6 of outer lug, for carrying out the docking of free margins after introducing paper-cut pattern.Since the number of this paper-cut pattern is 4, institute
Can find to contain 4 corner join domains in individual module after molding.It can be formed after each module molding by connection
The molding figure of the paper-cut pattern collision energy absorbing box of the square-section as shown in Fig. 1 (b).
Fig. 2 is the square-section paper-cut pattern collision energy absorbing box and traditional square collision energy absorbing box load displacement song of variable cross-section
Line contrast schematic diagram, it is found that paper-cut pattern collision energy absorbing box can be effectively reduced initial spike power, and mean force has very
Big promotion.
Embodiment 2: Fig. 3 (a) and Fig. 3 (b) are a kind of implementation of the square-section paper-cut pattern collision energy absorbing box of variable cross-section
Mode.
Variable cross-section means to be axially variation in the section of the different identical positions of unit, relative to embodiment
The paper-cut pattern collision energy absorbing box of square-section described in 1, the energy-absorption box of this variable cross-section only need to change in Fig. 1 (a)
Paper-cut pattern.Paper-cut pattern adjusted is shown in Fig. 3 (a), the square-section paper-cut pattern collision energy absorbing box 7 of variable cross-section and change
The individual module 8 of the square-section paper-cut pattern collision energy absorbing box in section is as shown, other than square-section, other sections
Paper-cut pattern collision energy absorbing box can also be obtained by the number of shapes for the paper-cut pattern modified, here a different citing.
Embodiment 3: Fig. 4 (a) and Fig. 4 (b) are the square-section paper-cut pattern collision energy absorbing box with cross-section end frame
A kind of embodiment.
The so-called square-section paper-cut pattern collision energy absorbing box with cross-section end frame refers to that the section of energy-absorption box is rectangular.
It and is spliced by common tube bundle with square section and paper-cut pattern pipe from the appearance.But it can be seen that by Fig. 4 (a), paper-cut figure
The design of case is not limited to single geometric figure, can carry out configuration design by introducing combination pattern.Equally, along axial band
Having the length of the individual module 10 of the square-section paper-cut pattern collision energy absorbing box of cross-section end frame can also be different, and cut with waiting
Introducing paper-cut pattern back boundary 3 in the individual module 10 of the square-section paper-cut pattern collision energy absorbing box of face end frame can also be different
Sample.
Embodiment 4: Fig. 5 (a) and Fig. 5 (a) are a kind of embodiment of hexagonal cross-section paper-cut pattern collision energy absorbing box.
So-called hexagonal cross-section paper-cut pattern collision energy absorbing box 11 refers to that the section of energy-absorption box is hexagon.Due to paper-cut figure
Case shape is similar, thus the processing technology of hexagonal cross-section and square-section paper-cut pattern collision energy absorbing box be it is similar, pass through
The number for adjusting paper-cut pattern carries out the transformation in section.Equally, along axial hexagonal cross-section paper-cut pattern collision energy absorbing box
The length of individual module 12 can also be different, and introducing paper-cut pattern back boundary 3 in module 10 can also be different.
Claims (8)
1. a kind of collision energy absorbing box based on paper-cut pattern design, which is characterized in that the collision energy absorbing box is by along axial point
One or more collision energy absorbing box module compositions of cloth, the structure of single collision energy-absorbing cartridge module are as follows: with different polygon
Tee section thin-wall pipe；Material is removed in each folding corner region by paper-cut technology, carries out the processing and fabricating of paper-cut pattern, thus
The folding line lines with different angle is formed according to different paper-cut patterns, sends out the collision energy absorbing box in collision process
The good extension deformation pattern of raw energy absorption.
2. a kind of collision energy absorbing box based on paper-cut pattern design according to claim 1, which is characterized in that described touches
The section for hitting energy-absorption box is that the distribution form of foundation paper-cut pattern changes the cross sectional shape of polygonal cross-section thin-wall pipe, including four
Side tee section and hexagonal cross-section.
3. a kind of collision energy absorbing box based on paper-cut pattern design according to claim 1 or 2, which is characterized in that described
The global shape of collision energy absorbing box along axial direction be that cross-section is straight or variable cross-section is inclined.
4. a kind of collision energy absorbing box based on paper-cut pattern design according to claim 1 or 2, which is characterized in that described
Collision energy absorbing box use identical paper-cut pattern or different paper-cut patterns along axial individual module；It is each in individual module
The paper-cut pattern in corner is identical or different.
5. a kind of collision energy absorbing box based on paper-cut pattern design according to claim 3, which is characterized in that described touches
Energy-absorption box is hit along axial individual module using identical paper-cut pattern or different paper-cut patterns；Each corner in individual module
Paper-cut pattern it is identical or different.
6. a kind of according to claim 1, collision energy absorbing box based on paper-cut pattern design described in 2 or 5, which is characterized in that institute
The paper-cut pattern stated includes that the shape of diagonal section region paper-cut pattern is modified, including triangle and trapezoidal；The paper-cut
Pattern includes that the size of diagonal section region paper-cut pattern is modified；The height of the collision energy-absorbing cartridge module is equal or not phase
Deng.
7. a kind of collision energy absorbing box based on paper-cut pattern design according to claim 3, which is characterized in that described cuts
Paper pattern includes that the shape of diagonal section region paper-cut pattern is modified, including triangle and trapezoidal；The paper-cut pattern packet
The size for including diagonal section region paper-cut pattern is modified；The height of the collision energy-absorbing cartridge module is equal or unequal.
8. a kind of collision energy absorbing box based on paper-cut pattern design according to claim 4, which is characterized in that described cuts
Paper pattern includes that the shape of diagonal section region paper-cut pattern is modified, including triangle and trapezoidal；The paper-cut pattern packet
The size for including diagonal section region paper-cut pattern is modified；The height of the collision energy-absorbing cartridge module is equal or unequal.
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| CN114454911A (en) * | 2022-03-25 | 2022-05-10 | 中南大学 | Multi-tube combined energy absorption device |
| CN115534852A (en) * | 2022-10-22 | 2022-12-30 | 中南大学 | Multi-pipe energy absorption device based on pipe fitting height-induced ring distribution differentiation design |
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| CN114454911A (en) * | 2022-03-25 | 2022-05-10 | 中南大学 | Multi-tube combined energy absorption device |
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| CN109664849B (en) | 2020-09-25 |
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