Threshold beam assembly and vehicle

Abstract

The invention provides a doorsill beam assembly and a vehicle. The doorsill beam assembly comprises a doorsill beam and a reinforcing piece. And the reinforcer is fixed in the cavity of the doorsill beam. The reinforcing piece is a uniform-section cavity extending in the front-back direction of the automobile body. And the reinforcing piece is made of a long glass fiber composite material. According to the doorsill beam assembly and the vehicle, on the premise that the strength of the doorsill beam assembly is improved to meet the collision safety of the whole vehicle, the weight of the reinforcing piece is reduced, the lightweight requirement of the vehicle is better met, and the doorsill beam assembly is simple in structure, easy to produce and manufacture and low in cost.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a sill beam assembly and a vehicle. Background Art

[0002] The lightweight design of the vehicle, especially the lightweight design of the body-in-white, has always been the design principle adhered to by all OEMs. As a key component of the body-in-white, the lightweight structural design of the sill beam is of great significance to reducing the weight of the vehicle.

[0003] With the widespread application of aluminum profile sill beam structures, the weight of the vehicle continues to increase due to the continuous superposition of vehicle configurations and functions, which reduces the collision safety performance of the vehicle. In the prior art, the problem of reduced collision safety performance is generally solved by increasing the wall thickness of the sill beam ribs, the number of cavities, or welding aluminum profile reinforcements on the inner cavity and outer wall of the sill beam, but this method will further increase the weight of the vehicle.

[0004] Therefore, it is necessary to provide an improved rocker beam assembly and a vehicle to solve the above problems. Summary of the invention

[0005] The present application provides a lightweight rocker beam assembly and a vehicle.

[0006] The present application discloses a sill beam assembly, comprising a sill beam and a reinforcement, wherein the reinforcement is fixed in a cavity of the sill beam, the reinforcement is a cavity of uniform cross-section extending along the front-rear direction of a vehicle body, and the reinforcement is made of a long glass fiber composite material.

[0007] Furthermore, it also includes an adhesive component, which is fixed to the outer surface of the reinforcement component and expands due to heat during baking to bond with the door sill beam.

[0008] Furthermore, the reinforcement member is provided with a reinforcement rib, and the reinforcement rib extends from the reinforcement member toward the door sill beam and abuts against the door sill beam.

[0009] Furthermore, the adhesive is designed in multiple sections on the cross section of the rocker beam assembly, one side of the adhesive is in contact with the reinforcing rib, and the adhesive extends along the front-rear direction of the vehicle body.

[0010] Furthermore, the threshold beam and the reinforcement are both provided with corresponding mounting holes, and blind rivets are passed through the mounting holes, and the reinforcement and the threshold beam are fixed by the blind rivets.

[0011] Furthermore, the length of the reinforcement is smaller than the length of the threshold beam, and the reinforcement is located at the front end of the threshold beam; the reinforcement is made by pultrusion process.

[0012] Furthermore, the threshold beam is a multi-layer structure, and the top layer includes at least two cavities; the reinforcement member includes a first reinforcement member and a second reinforcement member, and the first reinforcement member and the second reinforcement member are respectively located in the two cavities of the top layer of the threshold beam.

[0013] Furthermore, one side of the first reinforcement is recessed inwardly to form an avoidance cavity between the first reinforcement and the wall of the threshold beam; a reinforcement wall is arranged inside the second reinforcement, and the second reinforcement includes a first cavity and a second cavity located on both sides of the reinforcement wall.

[0014] Furthermore, the door sill beam is provided with ten cavities, and the ten cavities are distributed in four layers, and the number of cavities in each layer from top to bottom is two, three, three, and two; the adhesive is arranged at the four corners of the second reinforcement member.

[0015] The present application also discloses a vehicle, comprising the rocker beam assembly as described above.

[0016] The threshold beam assembly and vehicle of the present application are fixed with the threshold beam by using a reinforcement member made of a long glass fiber composite material, which reduces the weight of the reinforcement member while improving the strength of the threshold beam assembly to meet the collision safety of the entire vehicle, and better meets the lightweight requirements of the vehicle. At the same time, the reinforcement member is set as a cavity with a uniform cross-section, which has a simple structure, is easy to manufacture, and has a low cost.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 It is a cross-sectional view of the threshold beam assembly of the present application.

[0020] Figure 2 yes Figure 1 Cross-sectional view of the middle reinforcement and adhesive parts.

[0021] Figure 3 yes Figure 1 A perspective view of the center sill beam assembly.

[0022] Explanation of the accompanying drawings: 10. Door sill beam; 11. Outer wall; 12. Outer wall; 13. Cavity; 14. Cavity; 20. Reinforcement; 201. First reinforcement; 202. Second reinforcement; 21. Reinforcement rib; 22. Avoidance cavity; 23. Reinforcement wall; 24. First cavity; 25. Second cavity; 30. Adhesive; 40. Blind rivet. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0024] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this specification should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in this specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate the existence of one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0025] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms of "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0026] Next, the embodiments of the present application are described in detail.

[0027] like Figure 1 As shown, the present application provides a sill beam assembly, including a sill beam 10 and a reinforcement 20. The reinforcement 20 is fixed in a cavity of the sill beam 10. The reinforcement 20 is a cavity of uniform cross-section extending along the front-rear direction of the vehicle body. The reinforcement 20 is made of long glass fiber composite material.

[0028] The reinforcement 20 of the present application is made of long glass fiber composite material, which has tensile and compressive strengths exceeding 1000 MPa, improves the rigidity of the threshold beam assembly, and can meet the safety requirements of vehicle collision, especially small offset collision; on the other hand, compared with aluminum reinforcement, the long glass fiber composite material reduces the weight of the reinforcement 20, which better meets the lightweight requirements of the vehicle. At the same time, the reinforcement 20 is set as a cavity with a uniform cross section, which further realizes a lightweight design, and has a simple structure, is easy to manufacture, and has a low cost.

[0029] The threshold beam 10 is a multi-layer structure, and the top layer includes at least two cavities. In this embodiment, the threshold beam 10 is provided with ten cavities, and the ten cavities are distributed in four layers, and the number of cavities in each layer from top to bottom is two, three, three, and two. The multi-layered cavity design can improve the structural strength of the threshold beam 10, further absorb the collision energy when the vehicle is hit by a side collision or a column collision, and improve the buffering performance of the threshold beam 10.

[0030] The outer walls 11 and 12 of the sill beam located outside the vehicle body are designed to be at a certain angle to the direction of the collision force, thereby ensuring that the sill beam 10 has good supporting strength and can form a crushing induction and energy absorption effect when subjected to a side collision, thereby improving the safety of the vehicle. In this application, the specific shape and cavity distribution of the sill beam 10 can be flexibly designed according to the actual needs of different vehicle models.

[0031] Please also refer to Figure 2 , a reinforcing rib 21 is provided on the reinforcing member 20. The reinforcing rib 21 extends from the reinforcing member 20 toward the sill beam 10 and abuts against the sill beam 10. The reinforcing rib 21 further improves the structural strength of the sill beam assembly, and leaves more buffer space between the sill beam 10 and the main body of the reinforcing member 20, thereby improving the buffering performance of the sill beam assembly during collision, especially side collision and column collision.

[0032] The length of the reinforcement 20 is less than that of the threshold beam 10. The reinforcement 20 is located at the front end of the threshold beam 10, which further reduces the weight of the reinforcement 20. Specifically, in this embodiment, the length of the reinforcement 20 is 780 mm. It can be understood that the reinforcement 20 of this embodiment can meet the small offset collision requirements of the vehicle by only being arranged at the front end of the threshold beam 10. In some cases, the reinforcement 20 can also be equal to the length of the threshold beam 10 and penetrate the threshold beam 10 to achieve higher collision safety requirements.

[0033] The reinforcement 20 is made by pultrusion process, has good integrity, high utilization rate of raw materials, and effectively controls production costs. In addition, the production process is continuous, the product quality is stable, and reinforcements 20 with complex cross-sectional shapes can be produced to meet the special use requirements of different vehicles.

[0034] In this embodiment, the reinforcement member 20 includes a first reinforcement member 201 and a second reinforcement member 202 . The first reinforcement member 201 and the second reinforcement member 202 are respectively located in the two uppermost cavities 13 and 14 of the sill beam 10 .

[0035] One side of the first reinforcement 201 is recessed inwards, and a relief cavity 22 is formed between the first reinforcement 201 and the wall of the door sill beam 10. The relief cavity 22 is used to provide space for the installation of the door sill beam 10 and other body parts. A reinforcement wall 23 is arranged inside the second reinforcement 202, and the second reinforcement 202 includes a first cavity 24 and a second cavity 25 located on both sides of the reinforcement wall 23. The arrangement of the reinforcement wall 23 provides strong support for the second reinforcement 202, thereby further improving the structural strength.

[0036] Please also refer to Figure 3 The threshold beam 10 and the reinforcement member 20 are both provided with corresponding mounting holes, and a blind rivet 40 is inserted into the mounting hole, and the reinforcement member 20 and the threshold beam 10 are pre-fixed by the blind rivet 40. The blind rivet has a simple structure and can be installed on one side without other auxiliary parts. It is easy to operate and has high installation efficiency and low cost.

[0037] The threshold beam assembly of the present application also includes an adhesive 30. The adhesive 30 is an epoxy adhesive, one side of which is sticky and fixed to the outer surface of the reinforcement 20. After the threshold beam 10 and the reinforcement 20 are pre-fixed by the blind rivets 40, the body in white will be electrophoretically baked. During the electrophoretic baking, the adhesive 30 is heated and expanded to contact the threshold beam 10, and the viscosity increases due to the heat and is bonded to the threshold beam 10, so as to achieve a tight connection between the reinforcement 20 and the threshold beam 10. With the end of the electrophoretic baking, the adhesive 30 is also cooled and solidified, and finally the solidified connection between the reinforcement 20 and the threshold beam 10 is completed.

[0038] The reinforcement member 20 of the present application is pre-connected with the sill beam 10 by means of a blind rivet 40, and the connection and curing of the adhesive member 30 and the sill beam 10 are achieved by means of the electrophoresis baking step in the body-in-white manufacturing process. In the entire fixing process, there is no need for complex connection procedures such as MIG welding and grinding, which simplifies the connection process between the reinforcement member 20 and the sill beam 10, saves welding resources and improves production efficiency.

[0039] The adhesive 30 is designed in multiple sections on the cross section of the door sill beam assembly, which saves cost and reduces weight while meeting the bonding strength. During the heating process of electrophoresis baking, the segmented design also gives the adhesive 30 enough expansion space. One side of the adhesive 30 contacts the reinforcing rib 21, increasing the bonding area between the adhesive and the reinforcing member 20 and improving the connection strength. The adhesive 30 extends along the front-to-back direction of the vehicle body, and its length is equal to the length of the reinforcing member 20.

[0040] Specifically, the adhesive members 30 are arranged at the four corners of the second reinforcement member 202, so that the four corners of the second reinforcement member 202 can be firmly fixed to the door sill beam 10, thereby improving the stability of the connection. Since one side of the first reinforcement member 201 is concave inward, the adhesive member 30 is arranged at the triangular position of the first reinforcement member 201. It can be understood that the specific position of the adhesive member 30 can be flexibly designed according to different needs.

[0041] The present application also provides a vehicle, comprising the rocker beam assembly as described above.

[0042] The threshold beam assembly and vehicle of the present application are fixed with the threshold beam by using a reinforcement member made of a long glass fiber composite material, which reduces the weight of the reinforcement member while improving the strength of the threshold beam assembly to meet the collision safety of the entire vehicle, and better meets the lightweight requirements of the vehicle. At the same time, the reinforcement member is set as a cavity with a uniform cross-section, which has a simple structure, is easy to manufacture, and has a low cost.

[0043] The above is only a preferred implementation mode of the present application, and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred implementation mode as above, it is not used to limit the present application. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent implementation modes without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above implementation modes based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A threshold beam assembly, characterized in that: The invention comprises a sill beam and a reinforcement member, wherein the reinforcement member is fixed in a cavity of the sill beam, the reinforcement member is a cavity with a uniform cross section extending along the front-rear direction of the vehicle body, and the reinforcement member is made of a long glass fiber composite material.

2. The sill beam assembly according to claim 1, characterized in that: It also includes an adhesive component, which is fixed to the outer surface of the reinforcement component and expands due to heat during baking to be bonded to the door sill beam.

3. The sill beam assembly according to claim 2, characterized in that: The reinforcing member is provided with reinforcing ribs, which extend from the reinforcing member toward the door sill beam and abut against the door sill beam.

4. The sill beam assembly according to claim 3, characterized in that: The adhesive component is designed in multiple sections on the cross section of the rocker beam assembly, one side of the adhesive component is in contact with the reinforcing rib, and the adhesive component extends along the front-rear direction of the vehicle body.

5. The sill beam assembly according to claim 1, characterized in that: The threshold beam and the reinforcement are both provided with corresponding mounting holes, and blind rivets are passed through the mounting holes, and the reinforcement and the threshold beam are fixed by the blind rivets.

6. The sill beam assembly according to claim 1, characterized in that: The length of the reinforcement is smaller than that of the threshold beam, and the reinforcement is located at the front end of the threshold beam; the reinforcement is made by pultrusion process.

7. The sill beam assembly according to claim 2, characterized in that: The threshold beam is a multi-layer structure, and the uppermost layer includes at least two cavities; the reinforcement member includes a first reinforcement member and a second reinforcement member, and the first reinforcement member and the second reinforcement member are respectively located in the two cavities of the uppermost layer of the threshold beam.

8. The sill beam assembly according to claim 7, characterized in that: One side of the first reinforcement is recessed inwardly to form an avoidance cavity between the first reinforcement and the wall of the door sill beam; a reinforcement wall is arranged inside the second reinforcement, and the second reinforcement includes a first cavity and a second cavity located on both sides of the reinforcement wall.

9. The sill beam assembly according to claim 7, characterized in that: The door sill beam is provided with ten cavities, and the ten cavities are distributed in four layers, and the number of cavities in each layer from top to bottom is two, three, three, and two; the adhesive is arranged at the four corners of the second reinforcement member.

10. A vehicle, characterized in that: The invention comprises a sill beam assembly as claimed in any one of claims 1 to 9.

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