CN211308744U - Carbon-fibre composite engine hood and car - Google Patents
Carbon-fibre composite engine hood and car Download PDFInfo
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- CN211308744U CN211308744U CN201922243157.8U CN201922243157U CN211308744U CN 211308744 U CN211308744 U CN 211308744U CN 201922243157 U CN201922243157 U CN 201922243157U CN 211308744 U CN211308744 U CN 211308744U
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Abstract
The utility model relates to the technical field of automobiles, in particular to a carbon fiber composite engine hood and an automobile, wherein the carbon fiber composite engine hood comprises an inner plate, an outer plate, a hinge reinforcing plate group, an air spring mounting plate group and a lock reinforcing plate, wherein the first front part and the first rear part of the inner plate are integrally formed, and the thickness of the first front part is greater than that of the first rear part; the outer plate comprises a second front part and a second rear part positioned on the rear side of the second front part, the second front part and the second rear part are integrally formed, the thickness of the second front part is greater than that of the second rear part, and the outer plate is bonded with the inner plate; the hinge reinforcing plate group is arranged at the corner of the inner plate; the gas spring mounting plate group is arranged at the end part of the inner plate; the lock reinforcing plate is arranged at the front end of the inner plate and can be connected with the engine hood lock; the surfaces of the outer plate and the inner plate are both made of unidirectional fiber cloth. The carbon fiber composite engine cover improves the local strength, avoids the failure caused by local damage and improves the surface quality.
Description
Technical Field
The utility model relates to the field of automotive technology, especially, relate to a carbon-fibre composite engine bonnet and car.
Background
Passenger car engine covers generally adopt metal materials, so the passenger car engine covers have the defects of heavy assembly weight, high mold cost, poor passive safety performance and the like. At present, the engine covers in a few luxury vehicles are made of carbon fiber composite materials, so that the corrosion resistance, the fatigue resistance, the noise reduction and the heat insulation performance of the engine covers are improved, and the weight reduction target of the whole vehicle is met.
However, the prior art hood has low local strength, which easily causes failure of the hood, and the prior art hood has a problem of poor surface coating quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a carbon-fibre composite engine bonnet and car to improve its local strength and surface coating quality.
To achieve the purpose, the utility model adopts the following technical proposal:
a carbon fiber composite engine cover comprising:
an inner panel including a first front portion and a first rear portion located at a rear side of the first front portion, the first front portion and the first rear portion being integrally formed, and a thickness of the first front portion being greater than a thickness of the first rear portion;
the outer plate is covered on the upper side of the inner plate and forms an accommodating cavity with the inner plate in an enclosing mode, the outer plate comprises a second front part and a second rear part located on the rear side of the second front part, the second front part and the second rear part are integrally formed, the thickness of the second front part is larger than that of the second rear part, and the outer plate is bonded with the inner plate;
the hinge reinforcing plate group is arranged at the corner of the inner plate and is positioned in the accommodating cavity;
the gas spring mounting plate group is arranged at the end part of the inner plate and is positioned in the accommodating cavity;
the lock reinforcing plate is arranged at the front end of the inner plate and is positioned in the accommodating cavity, and the lock reinforcing plate can be connected with the engine hood lock;
the surfaces of the outer plate and the inner plate are both made of unidirectional fiber cloth.
Preferably, the hinge reinforcing plate set, the gas spring mounting plate set and the lock reinforcing plate are all bonded to the inner plate.
Preferably, the hinge reinforcement plate group includes a right hinge reinforcement plate and a left hinge reinforcement plate that are symmetrically disposed, the right hinge reinforcement plate is disposed at a right corner of the rear end of the inner plate, and the left hinge reinforcement plate is disposed at a left corner of the rear end of the inner plate.
Preferably, the gas spring mounting plate group comprises a right gas spring mounting plate and a left gas spring mounting plate which are symmetrically arranged, the right gas spring mounting plate is arranged at the right end of the inner plate, and the left gas spring mounting plate is arranged at the left end of the inner plate.
Preferably, the first rear part comprises a first inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the first inner layer respectively, and the first inner layer is made of five layers of prepreg;
the first front part comprises a second inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the second inner layer respectively, and the second inner layer is made of seven layers of prepreg.
Preferably, a junction of the first rear portion and the first front portion forms a transition region, and the transition region is convex toward a lower surface of the inner panel.
Preferably, the transition region is a downwardly convex arc structure.
Preferably, the second rear portion comprises a third inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the third inner layer respectively, and the third inner layer is made of seven layers of prepreg;
the second front portion comprises a fourth inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the fourth inner layer respectively, and the fourth inner layer is made of nine layers of prepreg.
Preferably, the lock reinforcement plate is provided with a lock hole through which the hood lock can be inserted.
An automobile comprises the carbon fiber composite engine hood.
The utility model has the advantages that:
the engine cover comprises an inner plate, an outer plate, a hinge reinforcing plate group, a gas spring mounting plate group and a lock reinforcing plate. The outer plate is bonded with the inner plate, so that connecting holes do not need to be drilled on the inner plate and the outer plate, and local failure caused by stress concentration around the connecting holes is avoided.
The thickness of the first front part is greater than that of the first rear part, so that the strength of the first front part is greater than that of the second rear part, the thickness of the second front part is greater than that of the second rear part, the strength of the second front part is greater than that of the second rear part, the structure of the engine hood is optimized, and the strength of the engine hood is improved.
After the hinge reinforcing plate group, the gas spring mounting plate group and the lock reinforcing plate are arranged, the Z-direction rigidity of the hinge reinforcing plate group, the gas spring mounting plate group and the lock reinforcing plate of the inner plate can reach 353N/mm, the Y-direction rigidity of the hinge reinforcing plate group, the gas spring mounting plate group and the lock reinforcing plate can reach 500N/mm, the local strength of the engine hood is effectively improved, and the local failure of the inner plate is avoided.
The grain of the unidirectional fiber cloth is consistent, the coating performance of the carbon fiber composite material is greatly improved, and the surface quality of the engine cover is improved.
Drawings
Fig. 1 is a schematic structural diagram of a carbon fiber composite engine cover provided by an embodiment of the present invention;
fig. 2 is an exploded schematic view of a carbon fiber composite engine cover according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of the carbon fiber composite engine cover provided by the embodiment of the present invention along the direction a-a in fig. 1.
In the figure:
1. an inner plate; 11. a first front portion; 12. a first rear portion; 13. a transition zone;
2. an outer plate; 21. a second front portion; 22. a second rear portion;
3. a right hinge stiffener; 4. a left hinge reinforcement plate; 5. a right gas spring mounting plate; 6. a left gas spring mounting plate; 7. a lock reinforcement plate; 71. a lock hole; 8. a receiving cavity.
Detailed Description
The technical solution of the present invention is further explained by the following 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 related to the present invention are shown in the drawings.
The present invention is limited to certain orientation words, and when no opposite explanation is given, the used orientation words are "upper", "lower", "left", "right", "inner" and "outer", and these orientation words are adopted for easy understanding, and therefore do not constitute a limitation to the scope of the present invention.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a carbon fiber composite material engine hood (hereinafter referred to as an engine hood) which is used in a domestic vehicle, but is not limited to the engine hood and can also be used in other types of vehicles to improve the local strength of the engine hood, avoid the failure of the engine hood caused by local damage and improve the surface quality of the engine hood.
As shown in fig. 1 to fig. 3, the engine cover provided by the present embodiment is made of a carbon fiber composite material, and is suitable for small-lot trial production, model vehicles or small-lot luxury vehicles, and the overall cost is low, i.e. the mold cost is low, the part cost is high, but considering that the yield is low, the cost is more advantageous than that of a sheet metal material. In addition, the carbon fiber engine hood can reduce weight by about 45%, and meanwhile, the carbon fiber composite material has excellent corrosion resistance, fatigue resistance and noise reduction and heat insulation performance.
The engine cover comprises an inner plate 1, an outer plate 2, a hinge reinforcing plate group, a gas spring mounting plate group and a lock reinforcing plate 7. The outer plate 2 is bonded with the inner plate 1, so that connecting holes do not need to be drilled on the inner plate 1 and the outer plate 2, and local failure caused by stress concentration around the connecting holes is avoided.
The inner panel 1 includes a first front portion 11 and a first rear portion 12 located on the rear side of the first front portion 11, the first front portion 11 and the first rear portion 12 are integrally formed, and the thickness of the first front portion 11 is greater than the thickness of the first rear portion 12; the outer plate 2 covers the upper side of the inner plate 1 and encloses with the inner plate 1 to form an accommodating cavity 8, the outer plate 2 comprises a second front part 21 and a second rear part 22 positioned at the rear side of the second front part 21, the second front part 21 and the second rear part 22 are integrally formed, and the thickness of the second front part 21 is larger than that of the second rear part 22. The thickness of the first front portion 11 is greater than that of the first rear portion 12, so that the strength of the first front portion 11 is greater than that of the second rear portion 22, and the thickness of the second front portion 21 is greater than that of the second rear portion 22, so that the strength of the second front portion 21 is greater than that of the second rear portion 22, thereby optimizing the structure of the hood and improving the strength of the hood.
The corner of the inner plate 1 is connected with a hinge, and the hinge reinforcing plate group is arranged at the corner of the inner plate 1, so that the local strength of the joint of the inner plate 1 and the hinge is improved. The end of the inner plate 1 is connected with an air spring, and the air spring mounting plate group is arranged at the end of the inner plate 1, so that the local strength of the joint of the inner plate 1 and the air spring is improved. The front end of the inner plate 1 is connected with an engine hood lock, and the lock reinforcing plate 7 is arranged at the front end of the inner plate 1, so that the local strength of the joint of the inner plate 1 and the engine hood lock is improved. The lock reinforcement plate 7 can be connected with the hood lock so as not to affect the locking of the hood. After the hinge reinforcing plate group, the gas spring mounting plate group and the lock reinforcing plate 7 are arranged, the Z-direction rigidity of the hinge reinforcing plate group, the gas spring mounting plate group and the lock reinforcing plate 7 of the inner plate 1 can reach 353N/mm, the Y-direction rigidity of the hinge reinforcing plate group, the gas spring mounting plate group and the lock reinforcing plate 7 of the inner plate can reach 500N/mm, and the local strength of the engine hood is effectively improved.
Hinge reinforcing plate group, air spring mounting plate group and lock reinforcing plate 7 all are located and hold chamber 8, guarantee engine bonnet's wholeness and aesthetic property, realize the local of inner panel 1 and strengthen, avoid the local inefficacy of inner panel 1.
The surfaces of the outer plate 2 and the inner plate 1 are both unidirectional fiber cloth, the grains of the unidirectional fiber cloth are consistent, the coating performance of the carbon fiber composite material is greatly improved, and the surface quality of the engine cover is improved.
Preferably, the hinge reinforcement plate set, the gas spring mounting plate set and the lock reinforcement plate 7 are all bonded to the inner panel 1. When the engine hood is assembled, the hinge reinforcing plate set, the gas spring mounting plate set and the lock reinforcing plate 7 are firstly bonded to the inner panel 1 to form an inner panel assembly, and then the outer panel 2 is bonded to the inner panel 1 in the inner panel assembly.
As shown in fig. 1 and 2, the hinge reinforcement plate group includes a right hinge reinforcement plate 3 and a left hinge reinforcement plate 4 which are symmetrically disposed, the right hinge reinforcement plate 3 is disposed at a right corner of the rear end of the inner panel 1, and the left hinge reinforcement plate 4 is disposed at a left corner of the rear end of the inner panel 1.
The gas spring mounting plate group comprises a right gas spring mounting plate 5 and a left gas spring mounting plate 6 which are symmetrically arranged, the right gas spring mounting plate 5 is arranged at the right end of the inner plate 1, and the left gas spring mounting plate 6 is arranged at the left end of the inner plate 1. Preferably, the gas spring mounting plate set is spaced from the rear end of the lower plate by a distance equal to the front end of the lower plate.
As shown in fig. 2 and 3, the lock reinforcement plate 7 is provided with a lock hole 71 through which the hood lock can be inserted.
In this embodiment, the first rear portion 12 includes a first inner layer and two unidirectional fiber cloths covering the upper and lower surfaces of the first inner layer, respectively, the first inner layer being made of five layers of prepreg. The first front part 11 includes a second inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the second inner layer respectively, and the second inner layer is made of seven layers of prepreg.
In order to improve the aesthetic property of the inner panel 1 and avoid the inner panel 1 from breaking at the joint of the first rear portion 12 and the first front portion 11, a transition area 13 is formed at the joint of the first rear portion 12 and the first front portion 11, and the transition area 13 protrudes toward the lower surface of the inner panel 1. For example, the transition region 13 may be a downwardly convex circular arc structure.
The second rear portion 22 includes a third inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the third inner layer, respectively, and the third inner layer is made of seven layers of prepreg. The second front portion 21 includes a fourth inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the fourth inner layer, respectively, and the fourth inner layer is made of nine layers of prepreg.
The inner panel 1 and the outer panel 2 in this embodiment are designed on the premise of isotropy, and the first rear portion 12 and the second rear portion 22 in this embodiment are integrally thickened, so that the Z-direction rigidity of the first rear portion 12 and the second rear portion 22 can reach 198N/mm, and the Y-direction rigidity can reach 400N/mm. Wherein the technical parameters of the layers of the first rear portion 12 and the first front portion 11 are shown in table 1 below, and the technical parameters of the layers of the second rear portion 22 and the second front portion 21 are shown in table 2 below.
Table 1 technical parameters of the layers of the first rear part and the first front part
TABLE 2 technical parameters of the layers of the second rear part and the second front part
The embodiment also provides an automobile which comprises the carbon fiber composite material engine hood.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A carbon fiber composite engine cover, comprising:
an inner panel (1) including a first front portion (11) and a first rear portion (12) located on a rear side of the first front portion (11), the first front portion (11) and the first rear portion (12) being integrally formed, and a thickness of the first front portion (11) being larger than a thickness of the first rear portion (12);
the outer plate (2) is covered on the upper side of the inner plate (1) and surrounds the inner plate (1) to form an accommodating cavity (8), the outer plate (2) comprises a second front part (21) and a second rear part (22) located on the rear side of the second front part (21), the second front part (21) and the second rear part (22) are integrally formed, the thickness of the second front part (21) is larger than that of the second rear part (22), and the outer plate (2) is bonded with the inner plate (1);
the hinge reinforcing plate group is arranged at the corner of the inner plate (1) and is positioned in the accommodating cavity (8);
the gas spring mounting plate group is arranged at the end part of the inner plate (1) and is positioned in the accommodating cavity (8);
the lock reinforcing plate (7) is arranged at the front end of the inner plate (1) and is positioned in the accommodating cavity (8), and the lock reinforcing plate (7) can be connected with an engine hood lock;
the surfaces of the outer plate (2) and the inner plate (1) are both made of unidirectional fiber cloth.
2. The carbon fiber composite engine cover according to claim 1, characterized in that the hinge reinforcement plate set, the gas spring mounting plate set and the lock reinforcement plate (7) are all bonded to the inner panel (1).
3. The carbon fiber composite material engine hood according to claim 1, characterized in that the hinge reinforcement plate group comprises a right hinge reinforcement plate (3) and a left hinge reinforcement plate (4) which are symmetrically arranged, the right hinge reinforcement plate (3) is arranged at a right corner of the rear end of the inner panel (1), and the left hinge reinforcement plate (4) is arranged at a left corner of the rear end of the inner panel (1).
4. The carbon fiber composite engine cover according to claim 1, characterized in that the gas spring mounting plate group comprises a right gas spring mounting plate (5) and a left gas spring mounting plate (6) which are symmetrically arranged, the right gas spring mounting plate (5) is arranged at the right end of the inner plate (1), and the left gas spring mounting plate (6) is arranged at the left end of the inner plate (1).
5. The carbon fiber composite engine cover according to claim 1, characterized in that the first rear portion (12) includes a first inner layer and two unidirectional fiber cloths covering an upper surface and a lower surface of the first inner layer, respectively, the first inner layer being made of five layers of prepreg;
the first front part (11) comprises a second inner layer and two layers of unidirectional fiber cloth, the two layers of unidirectional fiber cloth cover the upper surface and the lower surface of the second inner layer respectively, and the second inner layer is made of seven layers of prepreg.
6. The carbon fiber composite engine cover according to claim 5, characterized in that the junction of the first rear portion (12) and the first front portion (11) forms a transition zone (13), the transition zone (13) being convex towards the lower surface of the inner panel (1).
7. The carbon fiber composite engine cover according to claim 6, characterized in that the transition zone (13) is a downwardly convex circular arc structure.
8. The carbon fiber composite engine cover according to claim 1, characterized in that the second rear portion (22) comprises a third inner layer and two layers of unidirectional fiber cloth covering an upper surface and a lower surface of the third inner layer, respectively, the third inner layer being made of seven layers of prepreg;
the second front part (21) comprises a fourth inner layer and two layers of unidirectional fiber cloth, the unidirectional fiber cloth covers the upper surface and the lower surface of the fourth inner layer respectively, and the fourth inner layer is made of nine layers of prepreg.
9. The carbon fiber composite material engine hood according to claim 1, wherein the lock reinforcement plate (7) is provided with a lock hole (71) through which the engine hood lock can pass.
10. An automobile comprising the carbon fiber composite engine cover according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922243157.8U CN211308744U (en) | 2019-12-12 | 2019-12-12 | Carbon-fibre composite engine hood and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922243157.8U CN211308744U (en) | 2019-12-12 | 2019-12-12 | Carbon-fibre composite engine hood and car |
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| Publication Number | Publication Date |
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| CN211308744U true CN211308744U (en) | 2020-08-21 |
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| CN201922243157.8U Active CN211308744U (en) | 2019-12-12 | 2019-12-12 | Carbon-fibre composite engine hood and car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356925A (en) * | 2020-10-16 | 2021-02-12 | 武汉格罗夫氢能汽车有限公司 | Carbon fiber composite material front hatch cover assembly of fuel cell hydrogen energy automobile |
| CN112960038A (en) * | 2021-03-08 | 2021-06-15 | 中铝材料应用研究院有限公司 | Energy-absorbing aluminum alloy engine hood structure |
| CN114906228A (en) * | 2022-02-10 | 2022-08-16 | 中国第一汽车股份有限公司 | Novel carbon fiber composite fender |
-
2019
- 2019-12-12 CN CN201922243157.8U patent/CN211308744U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112356925A (en) * | 2020-10-16 | 2021-02-12 | 武汉格罗夫氢能汽车有限公司 | Carbon fiber composite material front hatch cover assembly of fuel cell hydrogen energy automobile |
| CN112960038A (en) * | 2021-03-08 | 2021-06-15 | 中铝材料应用研究院有限公司 | Energy-absorbing aluminum alloy engine hood structure |
| CN114906228A (en) * | 2022-02-10 | 2022-08-16 | 中国第一汽车股份有限公司 | Novel carbon fiber composite fender |
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