CN111845949A

CN111845949A - Automobile roof assembly, manufacturing and assembling method of automobile roof assembly and automobile

Info

Publication number: CN111845949A
Application number: CN201910358847.XA
Authority: CN
Inventors: 李敏浩; 姜叶洁; 刘向征; 陈东
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-10-30
Anticipated expiration: 2039-04-30
Also published as: CN111845949B

Abstract

The invention relates to an automobile roof assembly, a manufacturing and assembling method of the automobile roof assembly and an automobile, wherein the automobile roof assembly comprises the following components: the top cover frame comprises a force transmission framework, and the force transmission framework is made of thermoplastic materials and formed through an injection molding process; the top cover body is fixedly arranged on the top cover frame and comprises a resin matrix and a carbon fiber body which are connected with each other, and the resin matrix and the carbon fiber body are formed through a die pressing process. When the top cover body is collided positively or laterally, the impact force can be diffused to the surrounding supporting structure of the automobile top cover assembly through the effective conduction of the force transmission framework, so that the rigidity, the strength and the modal performance of the automobile top cover assembly are improved, the impact resistance is improved, the weight of the automobile top cover assembly can be greatly reduced, the light weight effect is obvious, and the energy conservation and consumption reduction during the operation of an automobile are facilitated.

Description

Automobile roof assembly, manufacturing and assembling method of automobile roof assembly and automobile

Technical Field

The invention relates to the technical field of automobiles, in particular to an automobile roof assembly, a manufacturing and assembling method of the automobile roof assembly and an automobile.

Background

Lightweight design is one of the important subjects of modern automobile development, and in order to reduce energy consumption, various large automobile manufacturers pay more and more attention to optimization of automobile body structures, and hope to reduce weight to the greatest extent on the premise of unchanged performance. The automobile roof is an important component of an automobile body, and the structural rigidity and strength of the automobile roof have great influence on the safety and stability of the whole automobile.

Traditionally, in order to guarantee structural strength and rigidity, automobile roof often adopts pure metal material to make, and the structure is complicated, and weight is heavier, can't realize lightweight design, is unfavorable for car energy saving and consumption reduction. In order to ensure that the automobile top cover has lighter weight, automobile manufacturers also adopt novel light materials, but part of structural rigidity and strength are always sacrificed, so that the local rigidity and yield strength of the automobile top cover are reduced, the impact resistance is reduced, the service life of the whole automobile is influenced, and the use safety and reliability are reduced.

Disclosure of Invention

Based on the above, there is a need for an automobile roof assembly, which has excellent structural rigidity, strength and impact resistance, is light in weight, meets the requirement of lightweight design, and is beneficial to energy conservation and consumption reduction; the automobile roof assembly is high in structural strength and rigidity, excellent in impact resistance and light in weight, can be firmly assembled with an automobile body, and is simple in steps and easy to implement; in addition, the automobile has good overall structure strength and rigidity and good use reliability and safety by adopting the automobile roof assembly, and the whole automobile is designed in a light weight manner so as to be beneficial to energy conservation and consumption reduction.

The technical scheme is as follows:

in one aspect, the present application provides a vehicle roof assembly, comprising:

the top cover frame comprises a force transmission framework, and the force transmission framework is made of thermoplastic materials and formed through an injection molding process; and

the top cover comprises a top cover body, wherein the top cover body is fixedly arranged on the top cover frame and comprises a resin matrix and a carbon fiber body which are connected with each other, and the resin matrix and the carbon fiber body are formed through a die pressing process.

In the automobile roof assembly, the roof body is formed by connecting the resin matrix and the carbon fiber body, and the roof body is arranged on the roof frame and combined with the force transmission framework. When the top cover body is collided positively or laterally, the impact force can be rapidly and uniformly diffused to the surrounding supporting structure of the automobile top cover assembly through the effective conduction of the force transmission framework, so that the automobile top cover assembly can be prevented from being deformed or even burst due to the overlarge impact force, the structural design improves the rigidity, the strength and the modal performance of the automobile top cover assembly, and the impact resistance is improved. In addition, because the force transmission framework is formed by adopting a thermoplastic material through an injection molding process, and the resin matrix and the carbon fiber body are formed through a die pressing process, the adopted light material can greatly reduce the weight of the automobile roof assembly, has obvious light weight effect, and is beneficial to saving energy and reducing consumption during the operation of an automobile.

The technical solution of the present application is further described below:

in one embodiment, the force transmission framework comprises a force transmission arm and a force transmission ring plate which are connected with each other, and an end point of one end of the force transmission arm is coincident with the center of the force transmission ring plate or is in the same straight line.

In one embodiment, the number of the transmission arms is at least two, the number of the transmission ring plates is at least two, the at least two transmission ring plates are arranged at intervals along the radial direction and are nested concentrically with each other, the same end of the at least two transmission arms is converged at the center of the transmission ring plate, the other same end of the at least two transmission arms is distributed along the circumferential direction and extends radially outwards, and all the transmission ring plates are connected with all the transmission arms.

In one embodiment, a structural hole is formed between two adjacent transmission arms and two adjacent transmission ring plates in an enclosing manner.

In one embodiment, the top cover frame further comprises a connecting lug, and the connecting lug is formed on the edge of the force transmission framework and provided with an assembling hole.

In one embodiment, the resin matrix comprises a resin base layer and at least one resin coupling layer, the carbon fiber body comprises at least two carbon fiber layers, all the carbon fiber layers are mutually orthogonally woven and arranged on the resin base layer in a stacking mode, and one resin coupling layer is arranged between two adjacent carbon fiber layers.

In one embodiment, the top cap body further includes a connecting edge formed at a side edge of the resin base layer.

In one embodiment, the top cover body is connected with the top cover frame through glue.

In another aspect, the present application further provides an automobile comprising the automobile roof assembly as described above. The automobile has the advantages that by adopting the automobile roof assembly, the strength and the rigidity of the whole structure are good, the use reliability and the safety are good, and the whole automobile is designed in a light weight manner, so that the energy conservation and the consumption reduction are facilitated.

In addition, the present application also provides a manufacturing and assembling method for producing the automobile roof assembly, which comprises the following steps:

injecting a thermoplastic material into an injection mold to obtain a top cover frame, wherein the top cover frame comprises a force transmission framework and connecting lugs formed on the force transmission framework;

putting the carbon fiber body into a mould pressing mould, and then injecting a resin-based material into the mould pressing mould to obtain a top cover body, wherein the top cover body comprises a resin matrix and the carbon fiber body which are mutually connected, and a connecting edge formed on the resin matrix;

coating adhesive on the force transmission framework to enable the top cover body to be glued on the force transmission framework to obtain the automobile top cover assembly;

Coating adhesive on the connecting edge to enable the automobile top cover assembly to be glued on the automobile body;

the roof frame is fixed with the A column, the B column and the C column of the car body through the connecting lugs in a threaded manner;

and riveting and fixing the top cover body and the side wall of the automobile body through the connecting edge to finish the assembly operation of the automobile top cover assembly and the automobile body.

The manufacturing and assembling method can obtain the automobile roof assembly which has high structural strength and rigidity, excellent shock resistance and light weight, and can be firmly assembled with the automobile body.

Drawings

FIG. 1 is a schematic structural diagram of a vehicle roof assembly according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a roof body of the vehicle roof assembly shown in FIG. 1;

FIG. 3 is a schematic view of a roof frame of the vehicle roof assembly shown in FIG. 1;

FIG. 4 is a flowchart illustrating steps of a manufacturing and assembling method for producing the automobile roof assembly according to an embodiment of the invention.

Description of reference numerals:

10. the top cover comprises a top cover frame 11, a force transmission framework 111, force transmission arms 112, a force transmission ring plate 12, structure holes 13, connecting lugs 131, assembly holes 20, a top cover body 21, a resin matrix 22, a carbon fiber body 23 and connecting edges.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to," "disposed on" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the specific manner of fixedly connecting one element to another element can be implemented by the prior art, and will not be described herein, and preferably, a screw-threaded connection is used.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

Referring to fig. 1 and 3, a vehicle roof assembly is shown for use in conjunction with a vehicle body frame to achieve a complete vehicle body structure according to one embodiment of the present application. As an important component of the body structure of an automobile, the weight and structural performance of the automobile roof assembly largely determine the safety and reliability of the automobile.

Specifically to this embodiment, this vapour car roof assembly includes: a top cover frame 10 and a top cover body 20. The top cover body 20 is arranged above the top cover frame 10 in a covering manner, and the top cover frame 10 is used for realizing loading and fixing. The roof frame 10 is used for attachment to a vehicle body frame in addition to the installation of the fixed roof body 20.

Specifically, the roof frame 10 includes a force transmission skeleton 11, and the force transmission skeleton 11 is formed by an injection molding process using a thermoplastic material. Preferably, the thermoplastic material used for manufacturing the force transmission framework 11 is long glass fiber reinforced polypropylene plastic, and the material has the advantages of low density, high specific strength, high specific modulus, strong impact resistance, stable size, low warping degree and the like, and is obvious in light weight effect and simple in processing and forming. Of course, in other embodiments, the force-transmitting skeleton 11 may be made of other types of materials. Such as modified polypropylene, hemp, etc.

The top cover body 20 is fixed on the top cover frame 10, and in an alternative embodiment, the top cover body 20 and the top cover frame 10 are connected by glue. Specifically, this viscose can be structural adhesive, therefore top cap body 20 is simple with top cap frame 10's dress antithetical couplet mode, when guaranteeing joint strength, can reduce the manufacturing degree of difficulty, improves production efficiency. Of course, in other embodiments, the top cover body 20 and the top cover frame 10 may be connected in other manners. Such as welding, riveting, snap-fit connection, etc.

With reference to fig. 2, the top cover body 20 includes a resin matrix 21 and a carbon fiber body 22 connected to each other, and the resin matrix 21 and the carbon fiber body 22 are formed by a molding process. During manufacturing, the carbon fiber body 22 is placed in a mould pressing mould, and then resin-based material is injected, so that the carbon fiber body 22 is fully soaked in the resin-based material; and then, carrying out pressure maintaining and heating operation on the die, forming a resin matrix 21 after the resin matrix material is cured, and firmly connecting the resin matrix 21 and the carbon fiber body 22 into a whole to obtain the top cover body 20.

In the automobile roof assembly, the roof body 20 is formed by connecting the resin matrix 21 and the carbon fiber body 22, and the roof body 20 is mounted on the roof frame 10 and combined with the force transmission framework 11. When the roof body 20 is collided positively or laterally, the impact force can be rapidly and uniformly diffused to the surrounding supporting structure of the automobile roof assembly through the effective conduction of the force transmission framework 11, so that the automobile roof assembly can be prevented from being deformed or even cracked due to the overlarge impact force, the structural design improves the rigidity, the strength and the modal performance of the automobile roof assembly, and the impact resistance is improved. In addition, because the force transmission framework 11 is formed by adopting a thermoplastic material through an injection molding process, and the resin matrix 21 and the carbon fiber body 22 are formed through a die pressing process, the adopted light material can greatly reduce the weight of the automobile roof assembly, has obvious light weight effect, and is beneficial to saving energy and reducing consumption during the operation of an automobile.

The roof assembly is typically located at the topmost surface of the entire vehicle and is susceptible to impact forces directed vertically or diagonally downward, or laterally, in the height direction. For example, in severe weather, the automobile roof assembly is very vulnerable to frontal impact caused by rain and hail, or impact caused by falling of foreign objects at high altitude, or side impact between vehicles when traffic accidents occur during the driving process of the automobile, which all put high demands on the structural performance of the automobile roof assembly. If the structural rigidity and strength of the automobile roof assembly are weak, or effective conduction and diffusion of impact force cannot be realized, expansion, contraction and deformation, even breakage, are easy to occur. With continued reference to fig. 3, in an alternative embodiment, the force transfer frame 11 includes a force transfer arm 111 and a force transfer ring plate 112 connected to each other, and an end point of the force transfer arm 111 coincides with or is aligned with a center of the force transfer ring plate 112. Therefore, when the automobile roof assembly is impacted from the front, the force transmission framework 11 can be used as a main load bearing component, so that impact force can be quickly transmitted and diffused from the force transmission arm 111 to the periphery by taking the center of the force transmission annular plate 112 as an original point, and the roof body 20 is prevented from being damaged due to overlarge stress. In terms of the structure, the force transmission arm 111 may have one end disposed at the center of the force transmission ring plate 112 and the other end extending outward after connecting the force transmission ring plate 112. Or the force transmission arm 111 is just arranged on the diameter of the force transmission ring plate 112, and two ends of the force transmission arm 111 are respectively connected with the force transmission ring plate 112.

Further, in order to improve the structural strength and rigidity of the automobile roof assembly and improve the impact resistance, in an embodiment, the number of the transmission arms 111 is at least two, the number of the transmission ring plates 112 is at least two, the at least two transmission ring plates 112 are radially spaced and concentrically nested with each other, one end of each of the at least two transmission arms 111 is converged at the center of the transmission ring plate 112, the other ends of the at least two transmission arms 111 are circumferentially distributed and radially extend outwards, and all the transmission ring plates 112 are connected with all the transmission arms 111. In this embodiment, for the convenience of understanding, it can be understood that the force transmission arms 111 and the force transmission ring plates 112 cooperate to form a spider-web structure. The spider-web structure can provide more force transmission paths, ensures the transmission and diffusion efficiency of the impact force, and ensures that the automobile roof can be prevented from bursting during instantaneous impact and continuous impact.

In addition, impact force can be quickly and uniformly conducted and diffused to supporting structures around the automobile roof assembly, such as an upright post, an edge beam and the like, so that modal rigidity of the automobile roof assembly is indirectly increased, and low-frequency resonance can be avoided from occurring in the driving process of the automobile to influence NVH performance of the automobile.

It is of course to be noted that in other embodiments the force transfer arms 111 and the force transfer ring plates 112 can also form other types of force transfer structures. For example, a letter type, a bow type, etc.

With reference to fig. 3, structural holes 12 are further defined between two adjacent transmission arms 111 and two adjacent transmission ring plates 112. Therefore, on the premise of meeting the structural rigidity and force transmission performance of the force transmission framework 11, the structural holes 12 can be formed to reduce the material of the top cover frame 10, so that the whole weight of the automobile top cover assembly is favorably reduced, the light weight design of the whole automobile is realized, and the purposes of energy conservation and consumption reduction are further achieved.

With reference to fig. 3, on the basis of any of the above embodiments, the top cover frame 10 further includes a connecting lug 13, and the connecting lug 13 is formed at the edge of the force transmission framework 11 and is provided with an assembling hole 131. The attachment lugs 13 are provided so that the roof frame 10 can be assembled to the vehicle body. Preferably, the number of the engaging lugs 13 is six, and each two of the engaging lugs are a group, respectively arranged on the long side of the force transmission frame 11, and respectively arranged in the front, middle and rear regions. When the automobile roof assembly is assembled, each group of connecting lugs 13 can be respectively assembled and connected with the A column, the B column and the C column, so that the assembling and connecting strength of the automobile roof assembly and an automobile body is improved. Optionally, the assembly holes 131 formed in the connecting lugs 13 are threaded holes, and correspondingly, threaded holes are reserved in corresponding positions on the column a, the column B and the column C, and are locked by bolts during assembly, so that the mounting mode is simple, and the connection strength is high. Of course, in other embodiments, other connection manners may be adopted to perform the assembly connection of the engaging lug 13 and the vehicle body. Such as welding, riveting, gluing, etc.

In an embodiment of the present disclosure, the resin matrix 21 includes a resin base layer and at least one resin coupling layer, the carbon fiber body 22 includes at least two carbon fiber layers, all of the carbon fiber layers are orthogonally woven and stacked on the resin base layer, and one resin coupling layer is disposed between two adjacent carbon fiber layers. The carbon fiber body 22 is formed by weaving at least two carbon fiber layers in an orthogonal mode, the carbon fiber material has high tensile strength, the comprehensive indexes of specific strength and specific modulus are far superior to those of other existing materials, and the requirements of rigidity, strength and light weight of a vehicle body structure can be effectively met; the material has small thermal expansion coefficient, small deformation under the condition of temperature change and good dimensional stability; the electrochemical activity is low, the device can adapt to various complex environments, and the service life is long. Therefore, when the automobile roof assembly is applied to the automobile roof assembly, the requirements of the complicated and changeable use environment of the automobile can be met, and the reliability is high. The resin base layer is formed by adopting the resin base material, because the resin base material has excellent thermosetting property, the resin base material can be quickly and fully combined with the carbon fiber body 22 under the conditions of pressurization and heating in the mould pressing mould, and the structural strength and the forming quality of the top cover body 20 can be ensured.

With reference to fig. 2, the top cap body 20 further includes a connecting edge 23, and the connecting edge 23 is formed on a side edge of the resin base layer. Therefore, when the whole vehicle is assembled, the roof body 20 can be assembled and connected with the side wall of the vehicle body through the connecting edge 23. The connecting mode can be structural gluing and/or riveting and the like.

In addition, the application also provides an automobile, which comprises the automobile roof assembly. The automobile has the advantages that by adopting the automobile roof assembly, the strength and the rigidity of the whole structure are good, the use reliability and the safety are good, and the whole automobile is designed in a light weight manner, so that the energy conservation and the consumption reduction are facilitated.

Further, the present application also provides a manufacturing and assembling method for producing the automobile roof assembly, which comprises the following steps:

step S100: injecting a thermoplastic material into an injection mold, and demolding after pressure maintaining and cooling to obtain a top cover frame 10, wherein the top cover frame 10 comprises a force transmission framework 11 and connecting lugs 13 formed on the force transmission framework 11;

step S200: placing a carbon fiber body 22 into a mould pressing mould, and then injecting a resin-based material into the mould pressing mould to obtain a top cover body 20, wherein the top cover body 20 comprises a resin matrix 21 and the carbon fiber body 22 which are connected with each other, and a connecting edge 23 formed on the resin matrix 21;

Step S300: coating adhesive on the force transmission framework 11 to enable the top cover body 20 to be glued to the force transmission framework 11 to obtain the automobile top cover assembly;

step S400: coating adhesive on the connecting edge 23 to enable the automobile roof assembly to be adhered to an automobile body;

step S500: the roof frame 10 is screwed and fixed with the A column, the B column and the C column of the vehicle body through the connecting lugs 13;

step S600: and (3) riveting and fixing the top cover body 20 and the side wall of the automobile body through a connecting edge 23 to finish the assembly operation of the automobile top cover assembly and the automobile body.

In order to avoid excessive glue amount, glue overflow during assembly is caused, assembly quality and vehicle body cleanness are affected, or glue liquid is too little, bonding strength is insufficient, vehicle body stability is affected, during gluing, the width of the glue liquid needs to be controlled to be 20-50 mm, and the thickness is controlled to be about 3 mm. When in gluing, external pressure is required to be uniformly applied to uniformly diffuse the glue solution on the assembly surface, and the glue solution is kept still until the connection is firm.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An automobile roof assembly, comprising:

2. The vehicle roof assembly of claim 1, wherein the force transfer skeleton comprises a force transfer arm and a force transfer ring plate that are connected to each other, and an end point of the force transfer arm coincides with or is collinear with a center of the force transfer ring plate.

3. The vehicle roof assembly of claim 2, wherein the number of the force transfer arms is at least two, the number of the force transfer ring plates is at least two, the at least two force transfer ring plates are radially spaced and concentrically nested with each other, a same end of the at least two force transfer arms converges at a center of the force transfer ring plates, another same end of the at least two force transfer arms is circumferentially distributed and radially extends outward, and all of the force transfer ring plates are connected to all of the force transfer arms.

4. The vehicle roof assembly of claim 3, wherein a structural hole is defined between two adjacent force transfer arms and two adjacent force transfer ring plates.

5. The vehicle roof assembly of claim 2, wherein the roof frame further comprises a connection lug formed at an edge of the force transmission frame and having a mounting hole.

6. The automobile roof assembly of claim 1, wherein the resin matrix includes a resin base layer and at least one resin coupling layer, and the carbon fiber body includes at least two carbon fiber layers, all of the carbon fiber layers are orthogonally woven and laminated on the resin base layer, and one resin coupling layer is disposed between two adjacent carbon fiber layers.

7. The automobile roof assembly of claim 6, wherein the roof body further includes a connecting edge formed at a side edge of the resin base layer.

8. The automobile roof assembly of any one of claims 1 to 7, wherein the roof body is connected to the roof frame by an adhesive.

9. An automobile comprising the automobile roof assembly according to any one of claims 1 to 8.

10. A manufacturing and assembling method for producing the automobile roof assembly according to any one of claims 1 to 8, comprising the steps of: