CN107310499A - A kind of high energy absorbing vehicle rear bumper - Google Patents
A kind of high energy absorbing vehicle rear bumper Download PDFInfo
- Publication number
- CN107310499A CN107310499A CN201710463885.2A CN201710463885A CN107310499A CN 107310499 A CN107310499 A CN 107310499A CN 201710463885 A CN201710463885 A CN 201710463885A CN 107310499 A CN107310499 A CN 107310499A
- Authority
- CN
- China
- Prior art keywords
- absorbing
- energy
- loading plate
- foamed aluminium
- rear bumper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/22—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly cellular material, e.g. solid foam
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/086—Gas foaming process
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a kind of high energy absorbing vehicle rear bumper, including a loading plate, the carrying back is fixed on automobile tail, the front of the loading plate is provided with several necks, energy-absorbing foamed aluminium board has been embedded in each fluting, the energy-absorbing foamed aluminium board is fixed using rivet with loading plate, and the thickness of the energy-absorbing foamed aluminium board is in 2 5cm；It is supported by loading plate, prevents modification, energy-absorbing foamed aluminium board crumple energy-absorbing, preferably protects passenger safety when magnetic is hit, while using block splicing, can changes at any time.
Description
Technical field
The present invention relates to technical field of automobile accessories, and in particular to a kind of high energy absorbing vehicle rear bumper.
Background technology
Modern high technology is continued to develop so that electromagnetic interference caused by electromagnetic wave and electromagnetic compatibility problem be increasingly tight
Weight, not only interferes and damages to electronic instrument, equipment, influence its normal work, serious to restrict China's electronic product and set
Standby international competitiveness, and pollute the environment, endanger human health；Other electromagnetic wave leakage also pacify by entail dangers to national information
The safety of complete and military vital strategic secrets.Substantial dash forward is had been achieved with especially as the electromagnetic pulse weapon of new concept weapon
It is broken, electronic equipment, power system etc. can directly be hit, cause the temporary transient failure of information system etc. or permanent damage
Bad and powerful electromagnetic pulse can also be damaged to human body, make one neurological disorders, behavior out of control etc..Therefore, we will and
When take electromagnetic protection measure, prevent the generation of electromagnetic interference and electromagnetic compatibility problem.
Foamed aluminium material is a kind of novel environment friendly electromagnetic shielding material risen in the last few years, and it has special cellular
Structure, is a kind of density ratio water also small metal material, with good resistance to compression and impact strength, and shield effectiveness is high,
The shielding needs of preferable sensitive instrument and equipment can be met, secret leakage are prevented, reduction is to the injury of human body and to other electricity
The interference of sub- instrument.In addition, because its have recyclable, environmentally friendly concurrently the characteristics of, adapted to the development of current social, more at home and abroad
Industrial circle and high-tech sector are widely applied.
Direction of the absorbing material towards " thin, light, wide, strong " is developed, and research shows, fine and close absorbing material is through porous
Its absorbing property is significantly improved after change, at the same can lightening material significantly density.However, at present to porous absorbing material
Research report it is more rare, the analysis of its wave-absorbing mechanism is also at the elementary step.Porous foam metal material is a kind of new
Porous light metal material, the performance such as people's system research its damping, shock resistance, sound absorption damping, electromagnetic wave shielding,
Therefore also it has been widely used on automobile.
The content of the invention
The technical problems to be solved by the invention are to provide that a kind of crumple energy-absorbing effect is good, the good high energy-absorbing vapour of security
Car rear bumper.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of high energy absorbing vehicle rear bumper, including a loading plate, the carrying back is fixed on automobile tail, described
The front of loading plate is provided with several necks, and energy-absorbing foamed aluminium board, the energy-absorbing foamed aluminium board have been embedded in each fluting
Fixed using rivet with loading plate, the thickness of the energy-absorbing foamed aluminium board is in 2-5cm；It is supported by loading plate, prevents from becoming
Type, energy-absorbing foamed aluminium board crumple energy-absorbing, preferably protects passenger safety when magnetic is hit, while using block splicing, can change at any time.
Described neck is random geometry, with square, triangle, crescent or trapezoidal is preferred.
Connection uses adhesive joint filling between the energy-absorbing foamed aluminium board.
The loading plate is steel plate or ABS plates.
Above-mentioned energy-absorbing foamed aluminium board is made up of the component of following weight percent hundred：
Calcium：5.5%
Tungsten：0.65%
Titanium：0.1%
Magnesium：0.15%
Lanthanum：0.15%
Iron：0.25%
Zinc：0.15%
Surplus is aluminium and inevitable impurity.
Above-mentioned foamed aluminium board preparation method is as follows：
(1) tungsten is first heated to fusing, is slow added into lanthanum, it is stirring while adding, continue to stir 10min after adding, then
500 DEG C are cooled to, tungsten lanthanum alloy is made；
(2) aluminium ingot is heated to 550-700 DEG C, adds calcium, titanium, magnesium, iron and zinc, it is stirring while adding, to whole fusings
Continue to stir 10min afterwards, aluminium foundry alloy is made；
(3) tungsten lanthanum alloy and aluminium foundry alloy are put into smelting furnace together, heating fusing stirs, obtains foaming alloy molten solution；
(4) foaming alloy molten solution is incorporated into agitator tank, and agitator tank is stirred, from stirring while stirring
Pot bottom is blown into liquid nitrogen or dry ice, liquid nitrogen or dry ice heat absorption vaporization, forms pressure, from foaming alloy molten solution bottom up operation,
Due to by resistance, foaming is formed in foaming alloy molten solution, while under stirring, foaming is evenly distributed on foaming alloy
In liquation；
(5) before treating that temperature starts solidification close to foaming alloy molten solution, the discharging opening of stirring pot bottom is opened, stirring is completed
Foaming alloy molten solution afterwards is flowed into direct pouring in molding production line and is molded；
(6) foamed aluminium board of cast molding is processed, the foam aluminium plate of suitable automobile needs is made.
Thickener has been additionally added in step (3), it is therefore an objective to increase the viscosity of liquation, the addition of wherein thickener accounts for hair
Steep the 1%-2% of alloy molten solution weight.
Foaming agent has been additionally added in step (3), it is therefore an objective to increase foaming effect, the addition of wherein foaming agent accounts for foaming
The 0.5%-1% of alloy molten solution weight.
It is 70~75% by foam aluminum pore rate made from above-mentioned foam process of the invention, aperture is 2.6~4.2mm,
The foamed aluminium material produced is processed into 10mm heavy-gauge sheetings, after testing, energy-absorbing density：18~25J/cm3；Intensity：≥18Mpa；
Noise reduction coefficient NRC more than 0.7 (regular-type foam aluminium plate noise reduction coefficient 0.6)；Compression performance (during porosity 75%)：Upper surrender
Point 4.55Mpa, lower yield point 3.30Mpa.
The beneficial effects of the invention are as follows：Structure design of the present invention is simple, is filled using energy-absorbing foamed aluminium, can be effective
The energy produced during collision is absorbed, the security of personnel in vehicle is improved, while changing conventional foam aluminium formula, made it have more
Good energy-absorbing effect, increases it and uses scope.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
As shown in figure 1, a kind of high energy absorbing vehicle rear bumper, including a loading plate 1, the back side of loading plate 1 is fixed on vapour
Tailstock portion, several necks 2 are provided with the front of loading plate 1, and energy-absorbing foamed aluminium board 3, energy-absorbing have been embedded in each fluting 2
Foamed aluminium board 3 is fixed using rivet with loading plate 1, and the thickness of energy-absorbing foamed aluminium board 3 is in 2-5cm；It is supported by loading plate,
Modification is prevented, foamed aluminium crumple energy-absorbing, preferably protects passenger safety when magnetic is hit, while using block splicing, can change at any time.
Neck 2 is random geometry, and the present embodiment is set to square.Connection is filled out using adhesive between energy-absorbing foamed aluminium board 3
Seam, loading plate 1 is steel plate or ABS plates.
Above-mentioned energy-absorbing foamed aluminium board 3 is made up of the component of following weight percent hundred：
Calcium：5.5%
Tungsten：0.65%
Titanium：0.1%
Magnesium：0.15%
Lanthanum：0.15%
Iron：0.25%
Zinc：0.15%
Surplus is aluminium and inevitable impurity.
The above-mentioned preparation method of energy-absorbing foamed aluminium board 3 is as follows：
(1) tungsten is first heated to fusing, is slow added into lanthanum, it is stirring while adding, continue to stir 10min after adding, then
500 DEG C are cooled to, tungsten lanthanum alloy is made；
(2) aluminium ingot is heated to 550-700 DEG C, adds calcium, titanium, magnesium, iron and zinc, it is stirring while adding, to whole fusings
Continue to stir 10min afterwards, aluminium foundry alloy is made；
(3) tungsten lanthanum alloy and aluminium foundry alloy are put into smelting furnace together, heating fusing stirs, obtains foaming alloy molten solution；
(4) foaming alloy molten solution is incorporated into agitator tank, and agitator tank is stirred, from stirring while stirring
Pot bottom is blown into liquid nitrogen or dry ice, liquid nitrogen or dry ice heat absorption vaporization, forms pressure, from foaming alloy molten solution bottom up operation,
Due to by resistance, foaming is formed in foaming alloy molten solution, while under stirring, foaming is evenly distributed on foaming alloy
In liquation；
(5) before treating that temperature starts solidification close to foaming alloy molten solution, the discharging opening of stirring pot bottom is opened, stirring is completed
Foaming alloy molten solution afterwards is flowed into direct pouring in molding production line and is molded；
(6) foamed aluminium board of cast molding is processed, the foam aluminium plate of suitable automobile needs is made.
Thickener has been additionally added in step (3), it is therefore an objective to increase the viscosity of liquation, the addition of wherein thickener accounts for hair
Steep the 1%-2% of alloy molten solution weight.
Foaming agent has been additionally added in step (3), it is therefore an objective to increase foaming effect, the addition of wherein foaming agent accounts for foaming
The 0.5%-1% of alloy molten solution weight.
It is 70~75% by foam aluminum pore rate made from above-mentioned foam process of the invention, aperture is 2.6~4.2mm,
The foamed aluminium material produced is processed into 10mm heavy-gauge sheetings, after testing, energy-absorbing density：18~25J/cm3；Intensity：≥18Mpa；
Noise reduction coefficient NRC more than 0.7 (regular-type foam aluminium plate noise reduction coefficient 0.6)；Compression performance (during porosity 75%)：Upper surrender
Point 4.55Mpa, lower yield point 3.30Mpa.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of high energy absorbing vehicle rear bumper, it is characterised in that including a loading plate, the carrying back is fixed on car tail
Portion, several necks are provided with the front of the loading plate, and energy-absorbing foamed aluminium board, the energy-absorbing have been embedded in each fluting
Foamed aluminium board is fixed using rivet with loading plate, and the thickness of the energy-absorbing foamed aluminium board is in 2-5cm.
2. a kind of high energy absorbing vehicle rear bumper according to claim 1, it is characterised in that described neck is square, three
Angular, crescent is trapezoidal.
3. a kind of high energy absorbing vehicle rear bumper according to claim 1, it is characterised in that the energy-absorbing foamed aluminium board it
Between connection use adhesive joint filling.
4. a kind of high energy absorbing vehicle rear bumper according to claim 1, it is characterised in that the loading plate is steel plate.
5. a kind of high energy absorbing vehicle rear bumper according to claim 1, it is characterised in that the loading plate is ABS plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463885.2A CN107310499A (en) | 2017-06-19 | 2017-06-19 | A kind of high energy absorbing vehicle rear bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463885.2A CN107310499A (en) | 2017-06-19 | 2017-06-19 | A kind of high energy absorbing vehicle rear bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107310499A true CN107310499A (en) | 2017-11-03 |
Family
ID=60184064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710463885.2A Pending CN107310499A (en) | 2017-06-19 | 2017-06-19 | A kind of high energy absorbing vehicle rear bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107310499A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128104A (en) * | 2018-08-09 | 2019-01-04 | 云南科威液态金属谷研发有限公司 | A kind of preparation facilities of low melting point foam metal, method and low melting point foam metal |
| CN111942313A (en) * | 2020-08-31 | 2020-11-17 | 西华大学 | Carbon fiber shock absorption front end support for electric automobile and manufacturing method thereof |
| CN114214537A (en) * | 2021-11-30 | 2022-03-22 | 东北大学 | Closed-cell foamed aluminum with high energy absorption and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2717764Y (en) * | 2004-07-13 | 2005-08-17 | 东北大学 | Vehicle bumper |
| EP1577168A2 (en) * | 2004-03-17 | 2005-09-21 | Kautex Textron GmbH & Co. KG. | Energy absorbing structural material |
| CN201338571Y (en) * | 2008-10-16 | 2009-11-04 | 郑明军 | Foam metal vehicle bumper |
| CN201761456U (en) * | 2010-07-21 | 2011-03-16 | 长安大学 | Honeycomb-pipe vehicle buffering energy absorber |
-
2017
- 2017-06-19 CN CN201710463885.2A patent/CN107310499A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1577168A2 (en) * | 2004-03-17 | 2005-09-21 | Kautex Textron GmbH & Co. KG. | Energy absorbing structural material |
| CN2717764Y (en) * | 2004-07-13 | 2005-08-17 | 东北大学 | Vehicle bumper |
| CN201338571Y (en) * | 2008-10-16 | 2009-11-04 | 郑明军 | Foam metal vehicle bumper |
| CN201761456U (en) * | 2010-07-21 | 2011-03-16 | 长安大学 | Honeycomb-pipe vehicle buffering energy absorber |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128104A (en) * | 2018-08-09 | 2019-01-04 | 云南科威液态金属谷研发有限公司 | A kind of preparation facilities of low melting point foam metal, method and low melting point foam metal |
| CN109128104B (en) * | 2018-08-09 | 2021-09-07 | 云南科威液态金属谷研发有限公司 | Preparation device and method of low-melting-point foam metal and low-melting-point foam metal |
| CN111942313A (en) * | 2020-08-31 | 2020-11-17 | 西华大学 | Carbon fiber shock absorption front end support for electric automobile and manufacturing method thereof |
| CN114214537A (en) * | 2021-11-30 | 2022-03-22 | 东北大学 | Closed-cell foamed aluminum with high energy absorption and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171103 |
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| RJ01 | Rejection of invention patent application after publication |