CN110194115B - Composite material bumper beam assembly - Google Patents
Composite material bumper beam assembly Download PDFInfo
- Publication number
- CN110194115B CN110194115B CN201910456952.7A CN201910456952A CN110194115B CN 110194115 B CN110194115 B CN 110194115B CN 201910456952 A CN201910456952 A CN 201910456952A CN 110194115 B CN110194115 B CN 110194115B
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- Prior art keywords
- composite
- composite material
- continuous fiber
- beam body
- reinforcing block
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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
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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
- B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
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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
- B60R2019/026—Buffers, i.e. bumpers of limited extent
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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
- B60R19/18—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
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
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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
- B60R19/18—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
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
- B60R2019/1833—Structural beams therefor, e.g. shock-absorbing made of plastic material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a composite material bumper beam assembly, which belongs to the technical field of automobiles and comprises a composite material beam, wherein the composite material beam comprises a beam body and a rib body; the beam body is provided with an accommodating cavity and is made of continuous fiber composite materials; the rib body is of a grid-shaped structure, is arranged in the accommodating cavity and connected with the beam body, and is made of a discontinuous fiber composite material. According to the composite material bumper beam assembly, the beam body is used as the main body of the composite material beam and is formed by the continuous fiber composite material, so that the anti-collision performance of the composite material bumper beam assembly is improved, and meanwhile, the lightweight design of a vehicle body is facilitated; the latticed rib body is made of the non-continuous fiber composite material, is arranged in the containing cavity and is connected with the beam body, and after the beam body is impacted, the latticed rib body can further play a role in buffering impact, so that the overall buffering performance of the composite material bumper beam assembly is improved.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a composite bumper beam assembly.
Background
The front and rear ends of the automobile are provided with bumper beam assemblies. The bumper beam assembly has the functions of absorbing and buffering external impact force and protecting the safety of a vehicle body and passengers.
In the prior art, an automobile bumper beam assembly generally comprises a beam and a collision buffer, and is connected with an automobile body, so that the beam can play a role of collision prevention when the automobile collides, and the safety of the automobile body and passengers on the automobile is protected; the energy generated by collision is distributed on the two collision buffers as uniformly as possible by the cross beam, so that the energy is absorbed by the collision buffers to the maximum extent, and the collision force is transmitted to other energy-absorbing parts uniformly.
However, in the prior art, the cross beam is generally made of metal, which is not beneficial to the light-weight design of the automobile body, and the buffering performance of the automobile bumper cross beam assembly needs to be further improved.
Disclosure of Invention
The invention aims to provide a composite material bumper beam assembly, and aims to solve the technical problems that in the prior art, the beam is made of metal, the lightweight design of a vehicle body is not facilitated, and the buffering performance of the bumper beam assembly of an automobile needs to be improved.
As the conception, the technical scheme adopted by the invention is as follows:
a composite bumper beam assembly comprising a composite beam, the composite beam comprising:
the beam body is provided with an accommodating cavity and is made of continuous fiber composite materials;
the rib body is of a grid-shaped structure, is arranged in the accommodating cavity and connected with the beam body, and is made of a discontinuous fiber composite material.
The composite material beam further comprises an edge sealing, wherein the edge sealing is arranged around the circumference of the beam body and is formed by the non-continuous fiber composite material.
The continuous fiber composite material is a continuous fiber reinforced thermoplastic composite material and comprises a thermoplastic resin material and a reinforced fiber material.
The discontinuous fiber composite material is a discontinuous fiber reinforced thermoplastic composite material and comprises a thermoplastic resin material and a reinforced fiber material.
Wherein the thermoplastic resin material is polypropylene or polyamide.
Wherein the reinforcing fiber material is made of one or more of carbon fiber, basalt fiber or glass fiber.
The beam body is formed by stacking continuous fiber reinforced thermoplastic composite material unidirectional belts in a layering mode.
Wherein the beam body comprises a plurality of areas, and the number of the continuous fiber reinforced thermoplastic composite unidirectional tapes of each area is between 20 and 35.
The composite material beam further comprises an impact buffer, and the impact buffer is connected with the composite material beam.
The beam body is provided with a reinforcing block, the reinforcing block is made of the non-continuous fiber composite material, and the reinforcing block is used for being connected with a towing hook threaded pipe.
According to the composite material bumper beam assembly provided by the invention, the beam body is used as a main body of the composite material beam, the beam body is provided with the accommodating cavity and is formed by the continuous fiber composite material, the continuous fiber composite material has high modulus and good impact performance, and is lighter in weight compared with metal quality, so that the anti-collision performance of the composite material bumper beam assembly is improved, and meanwhile, the lightweight design of a vehicle body is facilitated; the latticed rib body is made of the non-continuous fiber composite material, is arranged in the containing cavity and is connected with the beam body, and after the beam body is impacted, the latticed rib body can further play a role in buffering impact, so that the overall buffering performance of the composite material bumper beam assembly is improved.
Drawings
FIG. 1 is a schematic structural view from one perspective of a composite bumper beam assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural view from another perspective of a composite bumper beam assembly according to an embodiment of the present invention;
FIG. 3 is an exploded view of a composite bumper beam assembly according to an embodiment of the present invention;
fig. 4 is a schematic view of the installation of the towing hook threaded pipe on the beam body according to the embodiment of the invention.
In the figure:
1. a composite cross beam; 11. a beam body; 12. sealing edges; 13. a tendon body; 14. a reinforcing block;
2. a crash cushion;
3. a towing hook threaded pipe; 31. a tow hook threaded pipe reinforcing sheet; 32. a towing hook screwed pipe locking nut;
4. a connecting member; 41. a connector reinforcing sheet;
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In order to further reduce the weight of the automobile bumper and improve the overall buffering performance of the bumper, the embodiment provides a composite bumper beam assembly, which, referring to fig. 1-4, comprises a composite beam 1 and a collision bumper 2 connected with the composite beam 1; specifically, the composite cross member 1 is provided with one collision bumper 2 at each of its both ends.
In this embodiment, the composite cross beam 1 includes a beam body 11, a seal 12, and a rib body 13. The beam body 11 is made of continuous fiber composite materials and is provided with an accommodating cavity; specifically, the beam body 11 is formed with a U-shaped open accommodation chamber, and the collision bumper 2 is provided on one side of the U-shaped opening. The beam body 11 made of the continuous fiber composite material has the advantages of high modulus, high strength, high toughness and the like, and the lightweight design of the automobile bumper beam assembly is realized on the premise of ensuring the rigidity, the strength and the energy absorption performance of the beam body 11.
The sealing edge 12 is arranged around the circumference of the beam body 11 and is made of non-continuous fiber composite materials. After the edge sealing 12 is arranged in the circumferential direction of the beam body 11, the beam body 11 does not need to be trimmed, the construction speed can be increased when the composite material beam 1 is manufactured, and the construction cost can be reduced.
The rib body 13 is of a grid-shaped structure, is made of discontinuous fiber composite materials, is arranged in the accommodating cavity of the beam body 11 and is connected with the beam body 11; the cost of the non-continuous fiber composite material is relatively lower than that of the continuous fiber composite material, and the rib body 13 is made of the non-continuous fiber composite material, so that the production cost can be reduced; the rib body 13 of the net structure is arranged in the containing cavity and connected with the beam body 11, so that the rigidity of the composite material beam 1 can be increased, the energy can be absorbed in the collision process, and the buffering effect can be further realized. Optionally, the thickness of the individual mesh plates forming the tendon 13 is between 1mm and 3 mm. The arrangement of the ribs 13 is set as required.
The continuous fiber composite material is a continuous fiber reinforced thermoplastic composite material, and the continuous fiber reinforced thermoplastic composite material has the advantages of high strength, light weight, corrosion resistance, environmental protection, recyclability, and the like. Optionally, the thermoplastic resin material is polypropylene or polyamide. Optionally, the reinforcing fibre material is made of one or more of carbon fibres, basalt fibres or glass fibres. In this example, the mass content of the fibers in the continuous fiber reinforced thermoplastic composite is between 50% and 75%.
Specifically, in the present embodiment, the beam body 11 is formed by forming continuous fiber reinforced thermoplastic composite material plies from a continuous fiber reinforced thermoplastic composite material unidirectional tape, and the plies are compounded together by means of hot pressing to form the beam body 11. Specifically, the continuous fiber reinforced thermoplastic composite unidirectional tape is formed by pultrusion of continuous fibers and a thermoplastic resin material. Because the reinforced fiber material is made of one or more of carbon fiber, basalt fiber or glass fiber, correspondingly, the continuous fiber reinforced thermoplastic composite material layer can be a layer formed by one of a carbon fiber unidirectional tape, a basalt unidirectional tape or a glass fiber unidirectional tape, and can also be a layer formed by combining and mixing two or three of the carbon fiber unidirectional tape, the basalt unidirectional tape and the glass fiber unidirectional tape.
The beam body 11 is divided into a plurality of different areas according to the requirements of rigidity and strength, and the number of layers of the continuous fiber reinforced thermoplastic composite material laying layers of the different areas is set according to the requirement. Optionally, the beam 11 is divided into 20 to 30 zones, each zone having a number of layers ranging between 20 and 35, and the different zones having a thickness ranging between 3.2mm and 9.1 mm. For example, the number of layers in the center region of the beam body 11 is larger than the number of layers in the side region of the beam body 11.
In this embodiment, the discontinuous fiber composite material is a discontinuous fiber reinforced thermoplastic composite material, and the cost thereof is lower than that of the continuous fiber reinforced thermoplastic composite material. Specifically, the discontinuous fiber reinforced thermoplastic composite material comprises a thermoplastic resin material and a reinforced fiber material, namely, the thermoplastic resin material is taken as a matrix, and the discontinuous fiber is taken as a reinforcing material. Optionally, the thermoplastic resin material is polypropylene or polyamide. Optionally, the reinforcing fibre material is made of one or more of carbon fibres, basalt fibres or glass fibres. In this example, the mass content of fibers in the non-continuous fiber reinforced thermoplastic composite is between 45% and 55%.
Further, in the present embodiment, the beam 11 is provided with the reinforcing block 14, and the reinforcing block 14 is made of a discontinuous fiber composite material, and provides a mounting plane for the tow hook threaded pipe lock nut 32. The tow hook threaded pipe locking nut 32 is made of steel or aluminum. The towing hook threaded pipe 3 is machined from steel or aluminum.
The towing hook threaded pipe 3 is arranged on one of the collision buffers 2 and penetrates through the reinforcing block 14, and is locked on the reinforcing block 14 through a towing hook threaded pipe locking nut 32. In order to ensure the connection stability of the towing hook threaded pipe 3 and the reinforcing block 14, the towing hook threaded pipe 3 sequentially passes through the reinforcing block 14 and the towing hook threaded pipe reinforcing sheet 31 and then is locked on the reinforcing block 14 through the towing hook threaded pipe locking nut 32.
Alternatively, the crash cushion 2 is stamped from steel or aluminum. The tow hook threaded pipe 3 is connected to a crash cushion 2. It should be noted that the towing hook threaded pipe 3 and the collision bumper 2 are made of the same material, so that the towing hook threaded pipe and the collision bumper are welded together conveniently.
The crash cushion 2 is connected to the beam body 11 by a connecting member 4. Alternatively, the connecting member 4 is a rivet or a bolt. In order to ensure the connection effect, thread anti-loosening glue or structural glue can be coated during assembly. Specifically, in this embodiment, the connecting member 4 is a rivet, which passes through the connecting member reinforcing piece 41, passes through the beam body 11, and is connected to the impact absorber 2, connects the beam body 11 to the impact absorber 2, and is fastened by a nut. The connecting member reinforcing piece 41 is provided to ensure the stability of the connection of the beam body 11 and the crash cushion 2.
In this embodiment, when producing the composite bumper beam assembly, the beam body 11, the edge seal 12, the rib body 13, and the reinforcing block 14 are formed in a set of molds. Firstly, layers of continuous fiber reinforced thermoplastic composite materials are compounded into a beam body 11 in a hot pressing mode, then discontinuous fiber reinforced thermoplastic composite materials with the same matrix as the continuous fiber reinforced thermoplastic composite materials are injected into a die cavity of a die to form an edge sealing 12, a rib body 13 and a reinforcing block 14, and after injection is completed, the beam body 11, the edge sealing 12, the rib body 13 and the reinforcing block 14 are integrated, so that the connection strength among all parts is ensured, and the overall performance of the composite material beam 1 is further ensured.
In other embodiments, the continuous fiber reinforced thermoplastic composite material layer can be firstly compounded into the beam body 11 through a hot pressing mode, then the beam body 11 is placed into a mold, and the sealing edge 12, the rib body 13 and the reinforcing block 14 are formed through injection of the discontinuous fiber reinforced thermoplastic composite material, so that after injection is completed, the beam body 11, the sealing edge 12, the rib body 13 and the reinforcing block 14 are integrated, the connection strength among all parts is ensured, and the overall performance of the composite material beam 1 is further ensured.
The sealing edge 12 is connected with the beam body 11 through injection in a mould, so that the trimming process of the beam body 11 is omitted, the construction process period of the composite material beam 1 is shortened, and the construction cost is reduced.
The rib body 13 is connected with the beam body 11 through injection in the mold, so that the connection stability of the rib body 13 and the beam body 11 is ensured, and the rib body 13 is prevented from being separated from the beam body 11 when the impact force on the beam body 11 is too large.
The reinforcing block 14 for installing the towing hook threaded pipe 3 is connected with the beam body 11 into a whole in an injection mode, and the connection stability of the reinforcing block 14 and the beam body 11 is ensured. When the trailer is required to pull the automobile, if the pulling force is too large, the reinforcing block 14 can be arranged to avoid damaging the beam body 11.
In this embodiment, the continuous fiber-reinforced thermoplastic composite material and the discontinuous fiber-reinforced thermoplastic composite material have the same matrix. The same base can ensure that the edge seals 12, the ribs 13 and the reinforcing blocks 14 can be well connected with the beam body 11 when the edge seals 12, the ribs 13 and the reinforcing blocks 14 are injected.
Optionally, in the process of injection molding of the beam body 11, the tow hook threaded pipe reinforcing sheet 31 and the connecting piece reinforcing sheet 41 are pre-embedded at corresponding positions of the beam body 11, so that the later assembling process can be reduced, and the stability of connection of the tow hook threaded pipe 3 and the connecting piece 4 on the beam body 11 can be further enhanced.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A composite bumper beam assembly comprising a composite beam (1), said composite beam (1) comprising:
the beam body (11) is provided with an accommodating cavity and is made of continuous fiber composite materials;
the rib body (13) is of a grid-shaped structure, is arranged in the accommodating cavity, is connected with the beam body (11), and is made of a discontinuous fiber composite material;
the composite material beam (1) further comprises an edge sealing (12), wherein the edge sealing (12) is arranged around the circumference of the beam body (11) and is formed by the non-continuous fiber composite material;
the composite material beam further comprises an impact buffer (2), wherein the impact buffer (2) is connected with the composite material beam (1);
a reinforcing block (14) is arranged on the beam body (11), the reinforcing block (14) is made of the non-continuous fiber composite material, and the reinforcing block (14) is used for being connected with the towing hook threaded pipe (3);
the towing hook threaded pipe (3) is arranged on the collision buffer (2) and penetrates through the reinforcing block (14), and is locked on the reinforcing block (14) through a towing hook threaded pipe locking nut (32);
the beam body (11), the seal edge (12), the rib body (13) and the reinforcing block (14) are processed and molded in a set of molds; and during processing, the continuous fiber composite material layers are compounded into a whole through hot pressing to form the beam body (11), and the discontinuous fiber composite material with the same matrix as the continuous fiber composite material is injected into a die cavity of the die to form the edge sealing (12), the rib body (13) and the reinforcing block (14).
2. The composite bumper beam assembly of claim 1, wherein the continuous fiber composite is a continuous fiber reinforced thermoplastic composite comprising a thermoplastic resin material and a reinforcing fiber material.
3. The composite bumper beam assembly of claim 1, wherein the non-continuous fiber composite is a non-continuous fiber reinforced thermoplastic composite comprising a thermoplastic resin material and a reinforcing fiber material.
4. The composite bumper beam assembly of either of claims 2 or 3, wherein the thermoplastic resin material is polypropylene or polyamide.
5. The composite bumper beam assembly of any one of claims 2 or 3, wherein the reinforcement fiber material is made of one or more of carbon fiber, basalt fiber, or glass fiber.
6. The composite bumper beam assembly of claim 2 wherein the beam body (11) is laminated by ply-laying a unidirectional tape of continuous fiber reinforced thermoplastic composite.
7. The composite bumper beam assembly of claim 6 wherein the beam body (11) includes a plurality of zones, each zone having between 20 and 35 plies of the unidirectional tape of continuous fiber reinforced thermoplastic composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456952.7A CN110194115B (en) | 2019-05-29 | 2019-05-29 | Composite material bumper beam assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456952.7A CN110194115B (en) | 2019-05-29 | 2019-05-29 | Composite material bumper beam assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110194115A CN110194115A (en) | 2019-09-03 |
| CN110194115B true CN110194115B (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910456952.7A Active CN110194115B (en) | 2019-05-29 | 2019-05-29 | Composite material bumper beam assembly |
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| CN (1) | CN110194115B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111619504A (en) * | 2020-05-28 | 2020-09-04 | 江苏理工学院 | Automobile composite pedestrian protection beam |
| CN112406755B (en) * | 2020-11-27 | 2022-04-29 | 中国第一汽车股份有限公司 | Bumper beam and preparation method thereof |
| CN114789755A (en) * | 2022-02-07 | 2022-07-26 | 中国第一汽车股份有限公司 | Composite material car body A column lower end reinforcing structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5734459B2 (en) * | 2011-12-20 | 2015-06-17 | 本田技研工業株式会社 | Fiber reinforced resin materials for automobiles |
| KR101372004B1 (en) * | 2011-12-21 | 2014-03-12 | (주)엘지하우시스 | Bumper back beam made of stiffening closed section fiber composite material and Bumper having the bumper back beam |
| JP6120455B2 (en) * | 2015-06-05 | 2017-04-26 | 本田技研工業株式会社 | Bumper beam for vehicle and method for manufacturing bumper beam for vehicle |
| US9598033B1 (en) * | 2015-11-09 | 2017-03-21 | United States Council For Automotive Research, Llc | Joining and reinforcing a composite bumper beam and a composite crush can for a vehicle |
| CN105691334A (en) * | 2016-03-07 | 2016-06-22 | 北京航空航天大学 | Bumper device integrally formed by metal/composite material |
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| CN110194115A (en) | 2019-09-03 |
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