Longitudinal beam assembly and vehicle

Abstract

The longitudinal beam assembly comprises a longitudinal beam inner plate, a longitudinal beam body and a supporting plate, the longitudinal beam inner plate and the longitudinal beam body are welded and fixed, the supporting plate is arranged in a bending connection area of the longitudinal beam inner plate and the longitudinal beam body, and two opposite side edges of the supporting plate are respectively provided with a first flanging and a second flanging in a bending mode. The first flanging and the second flanging extend towards the same side of the supporting plate, the first flanging is attached to and fixed to the side, facing the longitudinal beam body, of the longitudinal beam inner plate, and the second flanging is attached to and fixed to the longitudinal beam body. The supporting plate is arranged in the bending connecting area of the longitudinal beam inner plate and the longitudinal beam body for reinforcement, meanwhile, the turnup structures which are turned over in the same direction along the supporting plate are arranged on the supporting plate, the installation difficulty of the supporting plate in the groove body structure is reduced, and meanwhile the attaching area is increased so that the reinforcing effect of the supporting plate on the longitudinal beam inner plate and the longitudinal beam body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a longitudinal beam assembly and a vehicle. Background Art

[0002] For vehicles using a C-shaped rear floor longitudinal beam assembly, the longitudinal beam inner plate and the longitudinal beam body need to be welded and fixed during the production process of the longitudinal beam assembly. Due to the bending structure of the C-shaped longitudinal beam assembly, the structure is currently mostly strengthened by setting a reinforcing plate with an L-shaped cross-section on the longitudinal beam body. However, the strengthening effect only acts on the longitudinal beam body, and the longitudinal beam assembly still has a long cantilever structure after bending on the front side. For the longitudinal beam inner plate with a relatively weak structure, it is difficult to maintain stability during the welding process, resulting in deterioration of the welding effect and even the longitudinal beam inner plate connection error exceeding the range, which affects the assembly effect of the vehicle and subsequent driving safety.

[0003] Therefore, how to improve the production safety of the longitudinal beam assembly is a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0004] The utility model provides a longitudinal beam assembly and a vehicle, so as to meet the requirements of improving the production safety of the longitudinal beam assembly and the safety of the vehicle using the corresponding longitudinal beam assembly.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] In the first aspect, the utility model provides a longitudinal beam assembly, characterized in that it includes a longitudinal beam inner plate, a longitudinal beam body and a support plate, the longitudinal beam inner plate and the longitudinal beam body are welded and fixed, the support plate is arranged in the bending connection area between the longitudinal beam inner plate and the longitudinal beam body, and the two opposite side edges of the support plate are respectively bent to provide a first flange and a second flange, the first flange and the second flange extend toward the same side of the support plate, the first flange is attached to and fixed to a side of the longitudinal beam inner plate facing the longitudinal beam body, and the second flange is attached to and fixed to the longitudinal beam body.

[0007] Optionally, in the above-mentioned longitudinal beam assembly, the support plate is bent toward the other side of the longitudinal beam body to provide a third flange, the third flange and the second flange extend toward opposite sides of the support plate, and the third flange and the second flange have an L-shaped cross-sectional configuration and fit the two inner walls perpendicular to the longitudinal beam body.

[0008] Optionally, in the above longitudinal beam assembly, the support plate further includes a fourth flange, the fourth flange and the third flange are arranged on two opposite side edges of the support plate, and two welding positioning holes are spaced apart on the fourth flange.

[0009] Optionally, in the above longitudinal beam assembly, the fourth flange and the third flange extend toward opposite sides of the support plate.

[0010] Optionally, in the above-mentioned longitudinal beam assembly, a reinforcing plate is provided in the bending area of ​​the longitudinal beam body, the reinforcing plate is fixedly connected to two side surfaces perpendicular to the longitudinal beam body at the same time, and the second flange and the third flange are both welded and fixed to the reinforcing plate.

[0011] Optionally, in the above longitudinal beam assembly, the edges of the second flange and the third flange are aligned with the open edge of the reinforcement plate.

[0012] Optionally, in the above longitudinal beam assembly, welding holes are respectively provided on the first flange and the second flange, and at least three welding holes are provided at intervals on a single flange.

[0013] Optionally, in the above longitudinal beam assembly, a circular production positioning hole is opened in the central area of ​​the support plate.

[0014] Optionally, in the above longitudinal beam assembly, the connection areas between the first flange, the second flange, the third flange and the fourth flange and the support plate are all rounded bending structures.

[0015] In a second aspect, the utility model provides a vehicle, which is supported at the rear floor position by the longitudinal beam assembly provided by any one of the above embodiments.

[0016] It can be seen from the above technical scheme that the longitudinal beam assembly provided by the utility model is provided with a support plate on the inner side of the bending connection area of ​​the longitudinal beam inner plate and the longitudinal beam body for reinforcement on the basis of welding and fixing the longitudinal beam inner plate and the longitudinal beam body. The two opposite side edges on the support plate are respectively bent and provided with a first flange and a second flange, and the first flange and the second flange extend toward the same side of the support plate. The above structure fills and supports the span area of ​​the longitudinal beam inner plate and the longitudinal beam body through the support plate, and increases the contact area through the flange structure, thereby enhancing the support effect. At the same time, the first flange and the second flange extending toward the same side of the support plate are not only easy to be placed in the open groove space formed by the longitudinal beam inner plate and the longitudinal beam body, but also can cooperate to transmit the collision force backward when the longitudinal beam assembly is hit, thereby avoiding the relatively weak bending structure from failure and deformation due to collision, and improving the safety of the longitudinal beam assembly and the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the utility model can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0018] Figure 1 It is an exploded view of the longitudinal beam assembly structure provided by the embodiment of the utility model;

[0019] Figure 2 It is the assembly diagram of the longitudinal beam assembly;

[0020] Figure 3 It is a schematic diagram of the connection structure between the support plate and the longitudinal beam body;

[0021] Figure 4 It is a structural schematic diagram of the support plate.

[0022] Among them, 10-longitudinal beam inner plate; 20-longitudinal beam body; 210-reinforcement plate; 30-support plate; 310-first flange; 320-second flange; 330-third flange; 340-fourth flange; 3410-welding positioning hole; 350-welding hole; 360-production positioning hole. DETAILED DESCRIPTION

[0023] For the C-shaped longitudinal beam assembly, it is mostly connected into an integrated structure by welding the split longitudinal beam inner plate and the longitudinal beam body, and there is a bending area due to structural limitations. The single-layer plate structure of the longitudinal beam inner plate is relatively weak in the bending area, and there is a risk of instability and poor welding effect during the welding process. At the same time, the ability to withstand collisions during use after production is poor, and failure problems are prone to occur, affecting the safety of passengers.

[0024] In order to make the technical personnel in this field better understand the present invention, the embodiments of the present invention are described below with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary for the solutions of the utility model described in the claims.

[0025] See also Figure 1-4The longitudinal beam assembly provided by the embodiment of the utility model mainly includes a longitudinal beam inner plate 10, a longitudinal beam body 20 and a support plate 30, so as to improve the bearing capacity and stability of the longitudinal beam assembly, and ensure the efficiency of the manufacturing process and the consistency of product quality. Specifically, the longitudinal beam inner plate 10 and the longitudinal beam body 20 are fixed by welding to form a solid integrated connection structure, and are used to bear various loads during the driving process of the vehicle. On this basis, the support plate 30 is arranged in the bending connection area of ​​the longitudinal beam inner plate 10 and the longitudinal beam body 20, and it is fixedly connected to the longitudinal beam inner plate 10 and the longitudinal beam body 20 at both side positions, so as to enhance the local stiffness and bending resistance of the longitudinal beam inner plate 10 and the longitudinal beam body 20 in the bending area. At the same time, the support plate 30 is pre-welded with the longitudinal beam body 20 to serve as a support point for the longitudinal beam inner plate 10 to be pre-placed, so that the longitudinal beam inner plate 10 has a support point in the bending connection area, and reduces the risk of instability during the welding process of the corresponding area and affecting the quality of the weld.

[0026] While the support plate 30 supports the longitudinal beam inner plate 10 and the longitudinal beam body 20 in the bending area, the two sides that are in contact with the longitudinal beam inner plate 10 and the longitudinal beam body 20 and are in relative positions are also bent and provided with a first flange 310 and a second flange 320 respectively. It should be noted that the sides in relative positions here specifically refer to the two sides that do not have a contact relationship on the support plate 30 whose main configuration is a rectangular structure. The first flange 310 of the support plate 30 is used to fit and fix with the longitudinal beam inner plate 10, and the second flange 320 is used to fit and fix with the longitudinal beam body 20. The setting of the flange result can increase the contact area between the support plate 30 and the longitudinal beam inner plate 10 and the longitudinal beam body 20, thereby improving the connection effect between the support plate 30 and the two sides and improving the stability of the overall structure.

[0027] It should be noted that the first flange 310 and the second flange 320 preferably extend in the same side direction of the support plate 30, so that the support plate 30 and the first flange 310 and the second flange 320 form a U-shaped structure. On this basis, the support plate 30 can move in the longitudinal beam inner plate 10 and the longitudinal beam body 20 of the trough structure with the help of the side where the extension structure is not set, without scratching the longitudinal beam inner plate 10 and the longitudinal beam body 20. It can also better cooperate with the force transmission by setting the structure on the same side, thereby improving the deformation resistance of the longitudinal beam assembly when subjected to external force.

[0028] In addition, it should be noted that the support plate 30, the longitudinal beam inner plate 10 and the longitudinal beam body 20 are preferably connected by automated welding technology to achieve accurate welding of the longitudinal beam inner plate 10 and the longitudinal beam body 20, thereby improving welding quality and production efficiency. At the same time, the bending process of the first flange 310 and the second flange 320 is manufactured using a precision bending machine to ensure that the angle and size of the flange are accurate to adapt to the subsequent fitting and fixing process. After the longitudinal beam assembly is welded, it is preferred to perform quality inspection of the welding points using non-destructive testing technology to ensure the reliability of the welding.

[0029] The longitudinal beam assembly provided by the embodiment of the utility model is based on the longitudinal beam inner plate 10 and the longitudinal beam body 20 being welded and fixed, and a support plate 30 is arranged inside the bending connection area of ​​the two for reinforcement. The two opposite side edges of the support plate 30 are respectively bent and provided with a first flange 310 and a second flange 320, and the first flange 310 and the second flange 320 extend toward the same side of the support plate 30. The above structure fills and supports the span area of ​​the longitudinal beam inner plate 10 and the longitudinal beam body 20 through the support plate 30, and increases the contact area through the flange structure, thereby enhancing the support effect. At the same time, the first flange 310 and the second flange 320 extending toward the same side of the support plate 30 are not only easy to be placed in the open slot space formed by the longitudinal beam inner plate 10 and the longitudinal beam body 20, but also can cooperate to transmit the collision force backward when the longitudinal beam assembly is hit, so as to avoid the relatively weak bending structure from failure and deformation due to collision, thereby improving the safety of the longitudinal beam assembly and the whole vehicle.

[0030] Furthermore, considering that the longitudinal beam body 20 is mostly a beam structure with an L-shaped cross section, in order to enhance the reinforcing effect of the support plate 30 on the longitudinal beam body 20 and the longitudinal beam inner plate 10, in some embodiments of the utility model, the support plate 30 is further bent and provided with a third flange 330 on another side edge facing the longitudinal beam body 20. It should be noted that the edge of the support plate 30 where the third flange 330 is provided is between the edges where the first flange 310 and the second flange 320 are located, and faces the edge of the longitudinal beam body 20. On this basis, the second flange 320 and the third flange 330 can cooperate to form an L-shaped cross-section structure and be fixedly connected to the L-shaped cross section of the longitudinal beam body 20, thereby enhancing the connection stability of the support plate 30 and forming an effective support for the longitudinal beam body 20 and the longitudinal beam inner plate 10.

[0031] It should be noted that the second flange 320 and the third flange 330 preferably extend toward opposite sides of the support plate 30 to increase the contact range between the support plate 30 and the longitudinal beam body 20 in the width direction. At the same time, the second flange 320 and the third flange 330 extending in opposite directions can also avoid weld overlap and facilitate the assemblers to perform welding operations.

[0032] It should be further explained that the third flange 330 and the second flange 320 help to distribute the load more evenly, reduce local stress concentration, and extend the service life of the longitudinal beam assembly. At the same time, the overall manufacturing process of the support plate 30 remains unchanged, and adding the flange structure does not increase the process difficulty, and it can still achieve large-scale production.

[0033] In order to further optimize the above technical solution, in the longitudinal beam assembly provided by the embodiment of the utility model, the support plate 30 also includes a fourth flange 340. Correspondingly, the fourth flange 340 and the third flange 330 are arranged on two opposite sides of the support plate 30 to form a symmetrical structure with the third flange 330, thereby enhancing the overall rigidity and structural uniformity of the support plate 30. The fourth flange 340 is not connected to the longitudinal beam body 20 and the longitudinal beam inner plate 10, and a welding positioning hole 3410 is arranged on the fourth flange 340, and at least two welding positioning holes 3410 are arranged at intervals to ensure accurate alignment during welding, reduce welding defects, and improve welding quality.

[0034] On the basis of the above structure, the fourth flange 340 and the third flange 330 preferably extend toward opposite sides of the support plate 30, so that the fourth flange 340 and the third flange 330 form a uniformly extended structure based on the support plate 30 and increase the span of the support plate 30, thereby increasing the rigidity of the support plate 30 and further increasing the supporting effect of the support plate 30 on the longitudinal beam inner plate 10 and the longitudinal beam body 20.

[0035] In order to avoid damage to the longitudinal beam body 20 during the welding process, in some embodiments of the utility model, a reinforcing plate 210 is provided in the bending area of ​​the longitudinal beam body 20. The reinforcing plate 210 also has an L-shaped cross-section and is fitted on two perpendicular side surfaces of the longitudinal beam body 20. On the one hand, it can reinforce the structure of the longitudinal beam body 20. On the other hand, the second flange 320 and the third flange 330 are both welded and fixed on the reinforcing plate 210 to achieve the reinforcement effect of the bending area while avoiding damage to the longitudinal beam body 20 caused by direct welding.

[0036] On the basis of the above-mentioned embodiments, considering that the larger the contact area between the flange structure and the surrounding area, the better the reinforcement effect on the bending area, it is preferred that the second flange 320 and the third flange 330 are set so that their edge positions are aligned with the open edge of the reinforcing plate 210, so that the L-shaped cross-sectional area of ​​the reinforcing plate 210 is completely covered by the second flange 320 and the third flange 330, thereby providing the support and reinforcement effect of the support plate 30 on the longitudinal beam inner plate 10 and the longitudinal beam body 20 by increasing the connection area.

[0037] Further, in the longitudinal beam assembly provided by the embodiment of the utility model, in order to ensure the connection effect between the support plate 30 and the longitudinal beam inner plate 10 and the longitudinal beam body 20, it is preferred that the support plate 30 is fixed to the longitudinal beam inner plate 10 and the longitudinal beam body 20 by welding. Specifically, welding holes 350 are respectively provided on the first flange 310 and the second flange 320 of the support plate 30 for welding operation. The assembler welds through the welding holes 350 and fills the welding holes 350 with welding points to achieve the fixation of the first flange 310 and the second flange 320. At the same time, it is preferred that at least three welding holes 350 are arranged at intervals on a single flange to cooperate with each other to distribute the load and reduce the risk of welding failure.

[0038] Considering the production process requirements of the support plate 30, the central area of ​​the support plate 30 provided by the embodiment of the utility model is also provided with a circular production positioning hole 360, which is used in conjunction with guide pins, bolts, etc. on the production equipment to ensure that the support plate 30 is positioned in the correct position before being processed. The design and size of the production positioning hole 360 ​​can be determined according to specific usage requirements to ensure accurate positioning.

[0039] In addition, in order to reduce the risk of stress concentration in the bending area of ​​each flange structure on the support plate 30, it is preferred that the connection areas between the first flange 310, the second flange 320, the third flange 330 and the fourth flange 340 and the support plate 30 are all rounded bending structures to provide a smooth transition and reduce the risk of stress concentration in the bending structure, thereby increasing the service life of the support plate 30.

[0040] Furthermore, some embodiments of the utility model also disclose a vehicle, which includes two symmetrically arranged longitudinal beam assemblies, and the longitudinal beam assembly is the longitudinal beam assembly provided by any of the above embodiments. Since the longitudinal beam assembly has the above effects, the above vehicle also has corresponding effects, which will not be described in detail herein. At the same time, it should be noted that the above vehicle can be a pure electric drive vehicle, a hybrid vehicle, a fuel vehicle, etc.

[0041] It should be noted that, for the convenience of description, only the parts related to the utility model are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the utility model can be combined with each other.

[0042] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0043] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. The scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but also should cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the concept of the above-mentioned utility model. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the utility model (but not limited to) to form a technical solution.

Claims

1. A longitudinal beam assembly, characterized in that: It includes a longitudinal beam inner plate, a longitudinal beam body and a support plate, the longitudinal beam inner plate and the longitudinal beam body are welded and fixed, the support plate is arranged in the bending connection area between the longitudinal beam inner plate and the longitudinal beam body, and the two opposite side edges of the support plate are respectively bent to provide a first flange and a second flange, the first flange and the second flange extend toward the same side of the support plate, the first flange is attached to and fixed to a side of the longitudinal beam inner plate facing the longitudinal beam body, and the second flange is attached to and fixed to the longitudinal beam body.

2. The longitudinal beam assembly according to claim 1, characterized in that: The support plate is bent toward the other side of the longitudinal beam body to provide a third flange, the third flange and the second flange extend toward opposite sides of the support plate, and the third flange and the second flange are L-shaped in cross-section and fit the two inner walls perpendicular to the longitudinal beam body.

3. The longitudinal beam assembly according to claim 2, characterized in that: The support plate further comprises a fourth flange, wherein the fourth flange and the third flange are arranged on two opposite side edges of the support plate, and two welding positioning holes are arranged on the fourth flange at intervals.

4. The longitudinal beam assembly according to claim 3, characterized in that: The fourth flange and the third flange extend toward two opposite sides of the support plate.

5. The longitudinal beam assembly according to claim 2, characterized in that: The longitudinal beam body is provided with a reinforcing plate in the bending area, the reinforcing plate is fixedly connected to two side surfaces perpendicular to the longitudinal beam body at the same time, and the second flange and the third flange are both welded and fixed to the reinforcing plate.

6. The longitudinal beam assembly according to claim 5, characterized in that: The edges of the second flange and the third flange are aligned with the open edge of the reinforcing plate.

7. The longitudinal beam assembly according to claim 1, characterized in that: The first flange and the second flange are respectively provided with welding holes, and at least three welding holes are arranged at intervals on a single flange.

8. The longitudinal beam assembly according to claim 1, characterized in that: A circular production positioning hole is opened in the central area of ​​the support plate.

9. The longitudinal beam assembly according to claim 3, characterized in that: The connection areas between the first flange, the second flange, the third flange and the fourth flange and the support plate are all rounded bending structures.

10. A vehicle, characterized in that: The longitudinal beam assembly according to any one of claims 1 to 9 is used for support at the rear floor position.

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