CN201769774U - High-efficient energy-absorbing bumper energy-absorbing device applicable to small vehicles - Google Patents
High-efficient energy-absorbing bumper energy-absorbing device applicable to small vehicles Download PDFInfo
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- CN201769774U CN201769774U CN2010205030231U CN201020503023U CN201769774U CN 201769774 U CN201769774 U CN 201769774U CN 2010205030231 U CN2010205030231 U CN 2010205030231U CN 201020503023 U CN201020503023 U CN 201020503023U CN 201769774 U CN201769774 U CN 201769774U
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
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- B21C23/04—Making uncoated products by direct extrusion
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Abstract
The utility model relates to a high-efficient energy-absorbing bumper energy-absorbing device applicable to small vehicles, which is used for solving the problem of giving attention to the dual requirements on narrow installing space and high-efficient energy absorption of the small vehicles, and comprises a housing of the energy-absorbing device and a framework positioned in the housing, and the structure after the improvement is as follows: the cross section of the housing of the energy-absorbing device is a symmetrical octagon, and the octagon consists of two long edges which correspond to each other, two short edges which correspond to each other and four angle edges for being connected with the long edges and the short edges; and the cross section of the framework of the energy-absorbing device is oval, four strengthening ribs are arranged between the housing and the framework, and all the strengthening ribs extend from the middle parts of the long edges and the short edges of the housing to the framework respectively and jointed therewith. The structure of the energy-absorbing device can lead the stress of the whole energy-absorbing device to be uniform and avoid collision and degeneration caused by local overlarge stress. Compared with the similar energy-absorbing devices, the energy-absorbing device can greatly reduce the overall size, meet the installation space of the small vehicles and simultaneously ensure the high-efficient energy-absorbing requirement.
Description
Technical field
The utility model relates to a kind of Vehicular device, particularly is applicable to the effective energy-absorbing bumper energy absorption device of miniature car, belongs to automobile technical field.
Background technology
Along with the develop rapidly of auto-industry, lightweight becomes a main flow direction of development of automobile.The safety of miniature car, traveling comfort, the feature of environmental protection are the important quality index of modern automobile, improve safety and the economy important topic that become vehicle passive safety Journal of Sex Research of automobile under collision situation.Federal bumper is a vitals of protecting occupant safety when automobile crashes to greatest extent, its main composition comprise crossbeam and be connected in crossbeam and the car body adapter plate between energy absorber.Energy absorber is fully to absorb impact kinetic energy with its compressive deformation and reduce maximum impact to relax the parts that impact when automobile is subjected to clashing into, for improving the energy-absorbing effect of energy absorber, manufacturing enterprise normally starts with by the several aspects such as mechanics energy-absorbing, increasing energy absorber cross dimensions and improvement energy absorber planform that improve material.Referring to Fig. 3, Fig. 4, this is two kinds of aluminum alloy energy absorber structural representations commonly used, and its technological process all is by behind the direct extrusion forming of aluminium section bar, improves mechanical property through bakingout process again, at last through length and the angle cut off and the corner cut operation obtains being suitable for.Wherein, energy absorber section form shown in Figure 3 is simple, and the energy absorber skeleton is thin relatively, a little less than the resistance type ability, and therefore need be by increasing the energy-absorbing requirement that length dimension and cross dimensions reach product; Energy absorber shown in Figure 4 is a hexagon, and its core skeleton also is a hexagon, and this structure is compared Fig. 1 energy absorber energy-absorbing effect and will be got well, but its planform causes cross dimensions bigger, and transmits and stressedly owe even.The lightweight miniature car, because automobile front structure compactness, it is limited to leave the space that energy absorber is installed for, existing energy absorber structure is difficult to reach the requirement that not only guarantees energy-absorbing effect but also can adapt to the automobile installing space, if reduce the energy absorber size, pursue the mechanical property that improves material simply, then will certainly increase cost of product greatly.Therefore improving the energy absorber structure design, make it under equal conditions possess higher energy-absorbing effect, is the preferred version that addresses the above problem.
The utility model content
The utility model is used to solve the defective of above-mentioned prior art and provides the more reasonable compactness of a kind of planform, transmission power to be applicable to the effective energy-absorbing bumper energy absorption device of compact car uniformly.
The alleged problem of the utility model solves by the following technical programs:
A kind of effective energy-absorbing bumper energy absorption device that is applicable to compact car, constitute the skeleton that comprises the energy absorber housing and be positioned at housing, its special feature is: the cross-sectional plane of described energy absorber housing is the octagon of symmetry, and this octagon is made of with four arms of angle that are connected the length limit two mutual cooresponding long limits, two mutual cooresponding minor faces; Described energy absorber skeleton cross-sectional plane is oval, is provided with four strengthening rib strips between housing and skeleton, and each strengthening rib strip is extended and engages to skeleton by the long limit of housing, minor face middle part respectively.
The above-mentioned effective energy-absorbing bumper energy absorption device that is applicable to compact car, described energy absorber housing cross dimensions is as follows: two cooresponding long limit spacing L are the 60-63 millimeter, article two, cooresponding minor face spacing B is the 70-72 millimeter, and two cooresponding arm of angle spacing A are the 68-70 millimeter; Described energy absorber skeleton section size is as follows: oval skeleton major diameter D1 is the 54-56 millimeter, and oval skeleton minor axis D2 is the 44-46 millimeter.
The above-mentioned effective energy-absorbing bumper energy absorption device that is applicable to compact car, the contact surface of described energy absorber and bumper/spoiler be the inclined-plane, with car body adapter plate contact surface be the plane, the high lateral dimension H1 of energy absorber is the 70-72 millimeter, short lateral dimension H2 is the 59-61 millimeter.
The above-mentioned effective energy-absorbing bumper energy absorption device that is applicable to compact car, described energy absorber is an aluminum alloy material, its tensile strength 〉=215Mpa; Yield strength 〉=170Mpa; Stretch ratio 〉=10%.
The utility model product is difficult to take into account the narrow and small installing space of lightweight miniature car and guarantees the effective energy-absorbing problem of double requirements at existing energy absorber structure, has developed a kind of energy absorber that is exclusively used in the miniature car bumper/spoiler.Described energy absorber section form is an octagon housing and by the oval skeletons of four strengthening rib strip bonded assemblys, this structure can make energy absorber whole stressed even, avoid causing the collision degeneration because of local pressure is excessive, the energy absorber skeleton adopts as far as possible with the hull shape coupling and near circular ellipse, can when energy absorber is stressed, better decompose power, and evenly transmit according to profile.In addition, this energy absorber adopts aluminum alloy 6063 to handle Tensile strength 〉=215Mpa through T6; Yield strength 〉=170Mpa; Stretch ratio 〉=10% by increasing product rigidity, strengthens its non-deformability.Compare with existing energy absorber of the same type, the utility model energy absorber is when reducing oad greatly, satisfying the compact car installing space, still can guarantee the requirement of effective energy-absorbing, the high-speed crash simulation analysis is the result show, this energy absorber be used for small-sized on the automobile when standing impact force, left and right energy-absorbing box and bumper/spoiler longitudinal force, transverse force all can reach corresponding standard and auto vendor's requirement.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3, Fig. 4 are two kinds of existing energy absorber structural representations;
Fig. 5 is the power-intrusion discharge curve of right side energy absorber in the high-speed crash l-G simulation test;
Fig. 6 is the power-intrusion discharge curve of left side energy absorber in the high-speed crash l-G simulation test;
Fig. 7 is the power-intrusion discharge curve of bumper/spoiler in the high-speed crash l-G simulation test.
Label is as follows in the accompanying drawing: 1. housing minor face, 2. long limit, 3. strengthening rib strip, 4. energy absorber skeleton, 5. the housing arm of angle of housing.
The specific embodiment
Referring to Fig. 1, Fig. 2, energy absorber described in the utility model is made of octahedra housing and the elliptic cross-section skeleton that is positioned at housing.The cross-sectional plane of energy absorber housing is the octagon of symmetry, this octagon is made of with four isometric arms of angle 5 that are connected the length limit two mutual cooresponding long limits 2, two mutual cooresponding minor faces 1, the non-regular octahedron design of housing mainly is to consider from the requirement of energy absorber installing space.The cross-sectional plane of energy absorber skeleton 4 adopts as far as possible and hull shape coupling and near circular elliptic design, is provided with four strengthening rib strips 3 between housing and skeleton, and each strengthening rib strip is extended and engages to skeleton by the long limit of housing, minor face middle part respectively.The each several part face size of energy absorber is as follows: two cooresponding long limit spacing L are the 60-63 millimeter, and two cooresponding minor face spacing B are the 70-72 millimeter, and two cooresponding arm of angle spacing A are the 68-70 millimeter; Described energy absorber skeleton section size is as follows: oval skeleton major diameter D1 is the 54-56 millimeter, and oval skeleton minor axis D2 is the 44-46 millimeter.The contact surface of energy absorber and bumper/spoiler be the inclined-plane, with car body adapter plate contact surface be the plane, the high lateral dimension H1 of energy absorber is the 70-72 millimeter, short lateral dimension H2 is the 59-61 millimeter.
The utility model product is compared oad with existing product and is reduced, and particularly length dimension reduces significantly, and as with respect to Fig. 3, Fig. 4 energy absorber, length dimension can reduce the 20-30 millimeter, can satisfy the miniature car installing space fully.Conventional energy-absorbing theory is analyzed, and the energy absorber length dimension shortens, and has promptly reduced the energy-absorbing distance, has shortened the energy-absorbing time, causes total energy absorption to reduce; Simultaneously cross dimensions reduces, and has reduced the rigidity of product, has reduced Area of bearing, has accelerated the product distortion, does not also reach just degeneration of energy-absorbing requirement product thereby cause.The utility model energy absorber exterior contour (housing) adopts octahedral structure, this exterior contour levels off to circle, helps better power being decomposed when stressed, and evenly transmits according to profile, make entire product stressed evenly, avoid local pressure excessive and cause risk.Because stressed is along these eight face transmission, compare hexahedron and oblong, transmit more even, stressed more even, simultaneously when external force is delivered to energy absorber inside, on four bearing surfaces of housing a reinforced rib is arranged all, assurance power can be directly delivered on the inner skeleton, is equivalent to the energy absorber structure has been carried out the secondary reinforcement.Inner skeleton adopts near circular oval structure, and one can be as far as possible and the hull shape coupling, and two draw the circular characteristics that can evenly decompose power and evenly transmit according to profile when stressed, and it is more reasonable to compare other shape aspect stressed.
The utility model energy absorber is after outer hull is stressed, power can be directly delivered on the inner skeleton, and the ellipsoidal structure of skeleton can decompose power along its shape transmission, by strengthening rib strip the power that is subjected to is passed to housing again simultaneously and do not have directly stressed position, like this, the stressed back of housing is along the profile transmission, simultaneously again to the inner skeleton transmission, again a part of power is passed to by in-to-in energy-absorbing and transmission simultaneously and do not have directly stressed other position of housing, formed the outside energy-absorbing of elder generation in the loading process, inner then energy-absorbing, the last exterior contour of a part that transmit again to non-main stress face, form outside-inside-outside stressed circulation, thereby strengthened the ability of bearing impact force, improved energy-absorbing effect.
Referring to Fig. 5-7, this is after described energy absorber is installed on the car body, the power of right side, left side energy absorber and bumper/spoiler high-speed crash l-G simulation test-intrusion discharge curve figure.When vehicle body was collided power, this power can be decomposed into the component of X, Y, three directions of Z, and wherein X is the vertical headstock and parallel with vehicle body that points to component; Y to component for being parallel to headstock and parallel with vehicle body; Z is vertical vehicle body (along the bodywork height direction) to component.
In Fig. 5, X1 denotation coordination directions X power, Y1 denotation coordination Y direction power, Z1 denotation coordination Z direction power.By the power-intrusion discharge curve of Fig. 5 right side energy absorber high-speed crash l-G simulation test as seen, X is 80.6KN to component, satisfies the code requirement of 85KN; Y is 9.2KN to component, satisfies the code requirement of 10KN; Z is 5.7KN to component, satisfies the code requirement of 10KN..
In Fig. 6, X2 denotation coordination directions X power, Y2 denotation coordination Y direction power, Z2 denotation coordination Z direction power.By the power-intrusion discharge curve of Fig. 6 left side energy absorber high-speed crash l-G simulation test as seen, X is 14.3KN to component, satisfies the code requirement of 85KN; Y is 9.5KN to component, satisfies the code requirement of 10KN; Z is 6.5KN to component, satisfies the code requirement of 10KN..
In Fig. 7, XN1 represents the change curve of the energy-absorbing of energy-absorbing box with the intrusion amount, and HL1 represents the change curve of the energy-absorbing of crossbeam with the intrusion amount, total ZN1 represents the change curve of the energy-absorbing of bumper/spoiler with the intrusion amount.By the power-intrusion discharge curve of Fig. 7 bumper/spoiler high-speed crash l-G simulation test as seen, the overall energy-absorbing of energy-absorbing box is 7.1KJ, is not less than the requirement of 5KJ greater than auto vendor.
Claims (3)
1. effective energy-absorbing bumper energy absorption device that is applicable to compact car, it comprises the energy absorber housing and is positioned at the skeleton of housing, it is characterized in that: the cross-sectional plane of described energy absorber housing is the octagon of symmetry, and this octagon is by two mutual cooresponding long limits (2), two mutual cooresponding minor faces (1) and be connected four arms of angle (5) formation on length limit; Described energy absorber skeleton (4) cross-sectional plane is oval, is provided with four strengthening rib strips (3) between housing and skeleton, and each strengthening rib strip is extended and engages to skeleton by the long limit of housing, minor face middle part respectively.
2. the effective energy-absorbing bumper energy absorption device that is applicable to compact car according to claim 1, it is characterized in that: described energy absorber housing cross dimensions is as follows: two cooresponding long limit spacing L are the 60-63 millimeter, article two, cooresponding minor face spacing B is the 70-72 millimeter, and two cooresponding arm of angle spacing A are the 68-70 millimeter; Described energy absorber skeleton section size is as follows: oval skeleton major diameter D1 is the 54-56 millimeter, and oval skeleton minor axis D2 is the 44-46 millimeter.
3. the effective energy-absorbing bumper energy absorption device that is applicable to compact car according to claim 1 and 2, it is characterized in that: the face that the face that energy absorber contacts with bumper/spoiler is the inclined-plane, contact with the car body adapter plate is the plane, the high lateral dimension H1 of energy absorber is the 70-72 millimeter, and short lateral dimension H2 is the 59-61 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205030231U CN201769774U (en) | 2010-08-25 | 2010-08-25 | High-efficient energy-absorbing bumper energy-absorbing device applicable to small vehicles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205030231U CN201769774U (en) | 2010-08-25 | 2010-08-25 | High-efficient energy-absorbing bumper energy-absorbing device applicable to small vehicles |
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| CN201769774U true CN201769774U (en) | 2011-03-23 |
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| CN2010205030231U Expired - Lifetime CN201769774U (en) | 2010-08-25 | 2010-08-25 | High-efficient energy-absorbing bumper energy-absorbing device applicable to small vehicles |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927742A (en) * | 2010-08-25 | 2010-12-29 | 凌云工业股份有限公司 | Automobile bumper energy absorber with high energy absorption performance |
| CN103318112A (en) * | 2013-07-11 | 2013-09-25 | 吉林大学 | Heavy duty vehicle bionic rear bumper |
| CN104039602A (en) * | 2012-01-05 | 2014-09-10 | 沙特基础创新塑料Ip私人有限责任公司 | Multi-stage energy absorber and method of making and using the same |
| CN106043463A (en) * | 2016-08-18 | 2016-10-26 | 辽宁忠旺集团有限公司 | Aluminum alloy anti-collision profile for large-size vehicle body and its production process |
| CN107187501A (en) * | 2017-05-12 | 2017-09-22 | 南京理工大学 | Negative poisson's ratio automobile energy-absorbing device |
-
2010
- 2010-08-25 CN CN2010205030231U patent/CN201769774U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927742A (en) * | 2010-08-25 | 2010-12-29 | 凌云工业股份有限公司 | Automobile bumper energy absorber with high energy absorption performance |
| CN104039602A (en) * | 2012-01-05 | 2014-09-10 | 沙特基础创新塑料Ip私人有限责任公司 | Multi-stage energy absorber and method of making and using the same |
| CN104039602B (en) * | 2012-01-05 | 2018-02-13 | 沙特基础全球技术有限公司 | Multilevel energy absorber and manufacture and use its method |
| CN103318112A (en) * | 2013-07-11 | 2013-09-25 | 吉林大学 | Heavy duty vehicle bionic rear bumper |
| CN106043463A (en) * | 2016-08-18 | 2016-10-26 | 辽宁忠旺集团有限公司 | Aluminum alloy anti-collision profile for large-size vehicle body and its production process |
| CN106043463B (en) * | 2016-08-18 | 2018-07-24 | 辽宁忠旺集团有限公司 | Large-scale car body aluminium alloy anticollision proximate matter and its production technology |
| CN107187501A (en) * | 2017-05-12 | 2017-09-22 | 南京理工大学 | Negative poisson's ratio automobile energy-absorbing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110323 Effective date of abandoning: 20120502 |