CN111559333A - Collision-resistant front bumper anti-collision cross beam - Google Patents
Collision-resistant front bumper anti-collision cross beam Download PDFInfo
- Publication number
- CN111559333A CN111559333A CN202010468310.1A CN202010468310A CN111559333A CN 111559333 A CN111559333 A CN 111559333A CN 202010468310 A CN202010468310 A CN 202010468310A CN 111559333 A CN111559333 A CN 111559333A
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- CN
- China
- Prior art keywords
- collision
- energy
- front bumper
- absorbing material
- shell
- 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
Links
- 239000011358 absorbing material Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052755 nonmetal Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 239000006260 foam Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000048 titanium hydride Inorganic materials 0.000 description 1
Images
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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
- B62D65/16—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being exterior fittings, e.g. bumpers, lights, wipers, exhausts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides an anti-collision beam of a front bumper with crashworthiness, which comprises: a beam housing; the multi-layer energy-absorbing material is used for absorbing kinetic energy during collision and is filled in each cabin inside the beam shell, wherein the multi-layer energy-absorbing material sequentially increases the filling density from small to large according to the filling direction from the inner ring to the outer ring, five small holes are formed in the middle positions of two side edges of the beam shell, and the five small holes are uniformly distributed along the axial direction of the beam shell. The anti-collision beam of the anti-collision front bumper can improve collision energy absorption and disperse collision force when collision occurs, so that the safety of passengers is protected to the maximum extent, and meanwhile, the weight can be remarkably reduced by filling light energy absorption materials, and the fuel economy is improved.
Description
Technical Field
The invention belongs to the field of automobiles, and particularly relates to a collision-resistant front bumper anti-collision beam.
Background
The automobile bumper system plays an important role in the automobile collision safety, particularly the middle and low speed collision safety, and the front bumper system mainly absorbs most of kinetic energy by means of elastic and plastic deformation of the anti-collision beam and the energy absorption box in the collision process, so that the peak value of collision force is reduced to the maximum extent. In addition, pedestrian protection foam can be added into the bumper system, so that the leg of a collided pedestrian can be protected to a certain extent. When the automobile is in frontal collision, the collision firstly occurs on the front decorative plate, then the collision force is immediately transmitted to the EPP foam, the foam is quickly subjected to elastic deformation, a part of energy is absorbed in a very short time, then the anti-collision beam is subjected to elastic deformation firstly, then the anti-collision beam and the energy absorption box simultaneously start to be subjected to plastic deformation until the plastic deformation is finished, and finally the shaping part recovers and returns part of kinetic energy. When collision occurs, the collision beam with single collision energy absorption can not effectively disperse collision force, and is easy to break or generate large deformation of a tiny part.
At present, except that the automobile collision safety is important, the light weight of the automobile is also a hot spot problem, and the density of the closed-cell foamed aluminum material is 0.2-0.5 g/cm3Within the range of (3), the application of the light material can greatly reduce the vehicle weight and improve the fuel economy.
The prior art includes, for example: british patent publication No. US201715458809(14.03.2017) "adaptive energy absorbing bumper", korean patent application No. 1020000072750(2000.12.02) "energy absorber of rear bumper of automobile", korean patent application No. 1020150092074(2015.06.29) "rear bumper structure", US patent publication No. US005988713A (1999.12.23) "reinforcement of bumper", and the like.
However, even with such a technique, the bumper beam itself is still used in the CFRP type, GMT type, PP type, steel and aluminum type, and the like, which are hot spots, and thus the reduction in weight is limited.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a crashworthiness front bumper impact beam.
The invention provides an anti-collision beam of a front bumper with crashworthiness, which is characterized by comprising the following components: a beam housing; multilayer energy-absorbing material for absorb kinetic energy when the collision, fill in the inside of crossbeam shell, wherein, multilayer energy-absorbing material is according to the direction of filling from inner circle to outer lane, and packing density is in proper order from little grow, and the position placed in the middle on the both sides limit of crossbeam shell all is equipped with five apertures, and five apertures are along crossbeam shell axial evenly distributed, and the aperture is used for improving impact loading efficiency.
The crashworthiness front bumper anti-collision beam provided by the invention can also have the following characteristics: wherein, the small holes are rectangular, circular or polygonal.
The crashworthiness front bumper anti-collision beam provided by the invention can also have the following characteristics: wherein, the height of the small hole is not more than half of the height of the side edge of the beam shell.
The crashworthiness front bumper anti-collision beam provided by the invention can also have the following characteristics: the multilayer energy-absorbing material is a metal energy-absorbing material, a nonmetal energy-absorbing material or a metal and nonmetal mixed energy-absorbing material.
Action and Effect of the invention
According to the crashworthiness front bumper anti-collision crossbeam provided by the invention, because the energy-absorbing materials with multiple layers of density distribution are filled in the anti-collision crossbeam, the crashworthiness can be improved during collision, the collision force is dispersed, the safety of passengers is protected to the maximum extent, and the light energy-absorbing materials can be selected for filling, so that the weight can be obviously reduced, and the fuel economy can be improved. And five apertures are uniformly distributed at the middle position of the side edge of the beam shell, so that the collision force loading efficiency can be effectively improved by adding the aperture structure, and the requirement of improving the collision resistance is further met.
Drawings
FIG. 1 is a schematic structural view of a crashworthy front bumper impact beam in an embodiment of the present invention;
FIG. 2 is a schematic illustration of the location of a side aperture of a crashworthy front bumper impact beam in an embodiment of the present invention;
FIG. 3 is a cross-sectional schematic view of a beam housing in an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of a beam shell having multiple layers of energy absorbing material filled therein according to an embodiment of the invention;
FIG. 5 is an illustration of an overall bumper system in which a crashworthiness front bumper impact beam is located in an embodiment of the present invention.
Detailed Description
In order to make the technical means and functions of the present invention easy to understand, the present invention is specifically described below with reference to the embodiments and the accompanying drawings.
Fig. 1 is a schematic structural view of a crashworthy front bumper impact beam in an embodiment of the present invention.
As shown in fig. 1, the impact resistant front bumper impact beam 100 of the present embodiment includes a beam shell 10 and multiple layers of energy absorbing material 20.
The multi-layer energy absorbing material 20 is used to absorb kinetic energy at the time of collision, and fills the inside of the beam housing 10.
In this embodiment, two compartments are provided inside the beam housing 10.
The multilayer energy absorbing material 20 has a filling density that increases from small to large in the filling direction from the inner ring to the outer ring.
In this embodiment, the inner ring may also be hollow while ensuring that the energy absorbing material filled in the outer ring is sufficient.
The multi-layer energy-absorbing material 20 is a metal energy-absorbing material, a non-metal energy-absorbing material or a mixture of metal and non-metal energy-absorbing material.
In this embodiment, the metal energy absorbing material may be a filler such as honeycomb aluminum, and the non-metal material may be a filler such as EPP foam.
In this embodiment, if there are multiple chambers inside the beam shell 10, n layers of energy-absorbing material 20 are filled in each chamber, where n is greater than or equal to 2.
Five small holes 30 are arranged in the middle of two side edges of the beam shell 10, and the five small holes 30 are uniformly distributed along the axial direction of the beam shell 10.
The apertures 30 are rectangular, circular or polygonal.
The height of the aperture 30 is no greater than one-half of the height of the side of the cross beam housing 10.
Fig. 2 is a schematic illustration of the location of a side aperture of a crashworthy front bumper impact beam in an embodiment of the present invention.
As shown in fig. 2, five small holes 30 are respectively formed in the middle positions of the two side edges of the cross beam housing 10, and the five small holes 30 are uniformly distributed along the axial direction of the cross beam housing 10.
The apertures 30 are rectangular, circular or polygonal.
The height of the aperture 30 is no greater than one-half of the height of the side of the cross beam housing 10.
In this embodiment, the beam housing 10 is made of a high-strength steel plate material, the impact-resistant front bumper anti-collision beam 100 is made of a foamed aluminum material 20, and the whole bumper system where the impact-resistant front bumper anti-collision beam 100 is located is installed, including the following steps:
step 1, firstly, preparing a piece of high-strength steel plate material with the thickness of 2.0mm, and cutting according to the use requirement, wherein the cutting size is 440mm x 1200mm in the embodiment;
step 2, stamping, bending and welding the cut sheet metal part to obtain a cross-sectional view of the beam shell 10 as shown in fig. 4, in the embodiment, two cabins are arranged in the beam shell 10, the bending radius is not too large during bending in the manufacturing process so as to avoid excessive filling gaps of foamed aluminum, the filling gaps are not more than 5.0mm as much as possible, and two welding positions 11 are required to be welded firmly during welding;
step 3, punching a row of rectangular small holes on two sides of the beam shell 10 respectively, wherein the size of each rectangular small hole is 20mm by 20mm, and the upper lines of the rectangular small holes are parallel to the tangential direction of the position of the whole sheet metal part;
step 4, measuring specific dimensions of some dimensional parameters in two chambers in the beam shell 10, as shown in fig. 4, to determine the specific dimensions of the foamed aluminum materials to be filled, and ensuring sufficient gaps between the foamed aluminum layers to allow the foamed aluminum in the inner chamber to be sufficiently inserted into the foamed aluminum in the outer ring;
step 5, selecting a TiH2 foaming agent, controlling the dispersibility and uniformity of the foaming agent, and foaming to form foamed aluminum tubular columns of 6 dimensions as shown in fig. 5, wherein in the embodiment, three layers of foamed aluminum materials are filled in each cabin, as shown in fig. 5, the density of 21 is the largest, the density of 23 is the smallest, that is, the density of the outer ring is the largest, and the density of the inner ring is the smallest;
step 6, inserting the foamed aluminum materials into the beam shell 10 layer by layer from outside to inside, and finally filling gaps among the foamed aluminum materials with silica gel, wherein the silica gel plays a role in fixing as long as being coated at two ends;
step 7, as shown in fig. 5, after the whole bumper system is installed on the front fascia 105 of the automobile, the whole bumper system is installed in the following order, firstly, the bumper beam pad 101, the energy absorption box 102 and the energy absorption box tray 103 are welded on the concave side of the front bumper beam 100 in sequence, and then the EPP material 104 and the convex side of the front bumper beam 100 are bonded by using strong glue.
In the embodiment, the foamed aluminum material can play a role in buffering when collision occurs, the tendency that the position of the collision point deforms and extends outwards gradually is enhanced, breakage or small partial large deformation is not caused, meanwhile, the filling energy-absorbing materials with multiple densities in the two internal cabins can share part of energy absorption, the light weight is realized, and the fuel economy is improved.
Meanwhile, further research shows that the energy-absorbing materials with multi-layer density distribution can reduce PCF (collision force peak value) and improve SEA (specific energy absorption), and meanwhile, small holes 30 additionally arranged on the side edge of the beam shell 10 can effectively improve CLE (collision force loading efficiency) and meet the requirement of improving collision resistance.
Effects and effects of the embodiments
According to the crashworthiness front bumper anti-collision crossbeam related to the embodiment, because the energy-absorbing materials with multiple layers of density distribution are filled in the anti-collision crossbeam, the anti-collision energy absorption can be improved during collision, the collision force is dispersed, the safety of passengers is protected to the maximum extent, and the light energy-absorbing materials can be selected for filling, so that the weight can be remarkably reduced, and the fuel economy is improved. And five apertures are uniformly distributed at the middle position of the side edge of the beam shell, so that the collision force loading efficiency can be effectively improved by adding the aperture structure, and the requirement of improving the collision resistance is further met.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (4)
1. A crashworthiness front bumper anticollision crossbeam which characterized in that includes:
a beam housing;
a plurality of layers of energy-absorbing materials for absorbing kinetic energy during collision and filled in the inner part of the beam shell,
wherein the multilayer energy-absorbing material has sequentially increased filling density from small to large according to the filling direction from the inner ring to the outer ring,
the middle positions of two side edges of the beam shell are provided with five small holes, the five small holes are uniformly distributed along the axial direction of the beam shell, and the small holes are used for improving the loading efficiency of the collision force.
2. The crashworthiness front bumper impact beam of claim 1, wherein:
wherein, the small holes are rectangular, circular or polygonal.
3. The crashworthiness front bumper impact beam of claim 1, wherein:
wherein the height of the small hole is not more than half of the height of the side edge of the beam shell.
4. The crashworthiness front bumper impact beam of claim 1, wherein:
the multilayer energy-absorbing material is a metal energy-absorbing material, a nonmetal energy-absorbing material or a metal and nonmetal mixed energy-absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468310.1A CN111559333A (en) | 2020-05-28 | 2020-05-28 | Collision-resistant front bumper anti-collision cross beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468310.1A CN111559333A (en) | 2020-05-28 | 2020-05-28 | Collision-resistant front bumper anti-collision cross beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111559333A true CN111559333A (en) | 2020-08-21 |
Family
ID=72068382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010468310.1A Pending CN111559333A (en) | 2020-05-28 | 2020-05-28 | Collision-resistant front bumper anti-collision cross beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111559333A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001233147A (en) * | 2000-02-28 | 2001-08-28 | Fuji Heavy Ind Ltd | Bumper beam structure |
| CN102700488A (en) * | 2012-06-12 | 2012-10-03 | 湖南大学 | Buffering energy-absorbing structure |
| CN102826060A (en) * | 2012-09-21 | 2012-12-19 | 吉林大学 | Bionic energy absorption pipe of bamboo-like structure |
| CN104097600A (en) * | 2014-07-14 | 2014-10-15 | 华侨大学 | Anti-collision buffer energy-absorbing device for side of truck |
| CN205022506U (en) * | 2015-09-23 | 2016-02-10 | 北京汽车研究总院有限公司 | Crashproof roof beam assembly and car before car |
| CN205916196U (en) * | 2016-08-29 | 2017-02-01 | 长城汽车股份有限公司 | Crashproof structure of vehicle anticollision roof beam assembly and vehicle |
| CN107097741A (en) * | 2017-05-31 | 2017-08-29 | 华侨大学 | Graded composite collision energy-absorbing pipe fitting |
| CN208855573U (en) * | 2018-08-28 | 2019-05-14 | 华南理工大学 | A new type of automobile front anti-collision beam assembly |
| CN208947258U (en) * | 2018-10-02 | 2019-06-07 | 江苏振世达新能汽车有限公司 | A kind of pick up anticollision beam assembly |
| CN110843709A (en) * | 2019-11-05 | 2020-02-28 | 华侨大学 | Novel sandwich structure automobile front anti-collision beam and assembly |
-
2020
- 2020-05-28 CN CN202010468310.1A patent/CN111559333A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001233147A (en) * | 2000-02-28 | 2001-08-28 | Fuji Heavy Ind Ltd | Bumper beam structure |
| CN102700488A (en) * | 2012-06-12 | 2012-10-03 | 湖南大学 | Buffering energy-absorbing structure |
| CN102826060A (en) * | 2012-09-21 | 2012-12-19 | 吉林大学 | Bionic energy absorption pipe of bamboo-like structure |
| CN104097600A (en) * | 2014-07-14 | 2014-10-15 | 华侨大学 | Anti-collision buffer energy-absorbing device for side of truck |
| CN205022506U (en) * | 2015-09-23 | 2016-02-10 | 北京汽车研究总院有限公司 | Crashproof roof beam assembly and car before car |
| CN205916196U (en) * | 2016-08-29 | 2017-02-01 | 长城汽车股份有限公司 | Crashproof structure of vehicle anticollision roof beam assembly and vehicle |
| CN107097741A (en) * | 2017-05-31 | 2017-08-29 | 华侨大学 | Graded composite collision energy-absorbing pipe fitting |
| CN208855573U (en) * | 2018-08-28 | 2019-05-14 | 华南理工大学 | A new type of automobile front anti-collision beam assembly |
| CN208947258U (en) * | 2018-10-02 | 2019-06-07 | 江苏振世达新能汽车有限公司 | A kind of pick up anticollision beam assembly |
| CN110843709A (en) * | 2019-11-05 | 2020-02-28 | 华侨大学 | Novel sandwich structure automobile front anti-collision beam and assembly |
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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: 20200821 |
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| RJ01 | Rejection of invention patent application after publication |