Longitudinal beam structure and vehicle

Abstract

The invention provides a longitudinal beam structure and a vehicle. The stringer structure includes a stringer body, a reinforcing member, and a frame mount. The stringer body includes a main beam member and first and second tail beam members extending from ends of the main beam member. The reinforcing component comprises a bottom plate and a force transmission plate, the bottom plate is connected to the second tail beam piece, the force transmission plate is arranged on the bottom plate, and one side edge of the force transmission folded plate is connected to the main beam piece. The frame installation part is fixed to the bottom plate and connected with the second tail beam part and the force transmission plate. Through the arrangement, the frame mounting piece is connected with the bottom plate, the second tail beam piece and the force transmission plate, so that the reinforcing component, the longitudinal beam body and the frame mounting piece can serve as a whole, the connecting stability of the frame mounting piece is improved, the frame mounting piece can bear larger loads, and the longitudinal beam structure can better filter vibration and noise.

Description

Technical Field

[0001] This application relates to the field of transportation vehicles, and particularly to a longitudinal beam structure and a vehicle. Background Art

[0002] With the promotion of energy transformation by countries around the world and the continuous development of the vehicle industry, new energy vehicles are becoming more and more popular among people. As an important component of new energy vehicles, the battery pack is relatively heavy, which increases the overall vehicle mass and poses great challenges to the safety and NVH (Noise, Vibration, Harshness) of the vehicle.

[0003] Due to the increase in the overall vehicle mass caused by the battery pack, for the Y-shaped longitudinal beam structure in the prior art, when a vehicle collision occurs, the impact force cannot be well dispersed, thus easily causing serious safety accidents. Moreover, at the connection between the longitudinal beam structure and the subframe, the load at the rear mounting point of the longitudinal beam structure far exceeds that of traditional fuel vehicles, resulting in relatively low stability when the subframe is connected to the longitudinal beam structure, and there is a risk of the subframe being pulled off and failing to connect with the longitudinal beam structure.

[0004] Therefore, it is necessary to provide an improved longitudinal beam structure to solve some or all of the above problems. Summary of the Invention

[0005] This application provides a longitudinal beam structure and a vehicle with high strength.

[0006] This application provides a longitudinal beam structure, including:

[0007] A longitudinal beam main body, which includes a main beam member and a first tail beam member and a second tail beam member extending from the end of the main beam member;

[0008] A reinforcement member, which includes a bottom plate and a force transmission plate. The bottom plate is connected to the second tail beam member, the force transmission plate is arranged on the bottom plate, and one side edge of the force transmission plate is connected to the main beam member;

[0009] A frame mounting member, which is fixed to the bottom plate and is respectively connected to the second tail beam member and the force transmission plate.

[0010] Further, the frame mounting member includes a mounting frame, a bottom side plate, and a first side plate bent from one side edge of the bottom side plate. One side of the first side plate is connected to the force transmission plate, the mounting frame is fixed to the bottom side plate, and the end parts of the mounting frame are respectively connected to the first side plate and the second tail beam member.

[0011] Further, the frame mounting member further includes a second side plate, which is bent from a side edge of the bottom side plate away from the first side plate, and one side of the second side plate is connected to the second tail beam member, and one end of the mounting bracket is connected to the second side plate.

[0012] Further, the mounting bracket includes a bracket member and a mounting pipe member. The bracket member is wound around the periphery of the mounting pipe member and is respectively connected to the first side plate, the second side plate and the second tail beam member, and the mounting pipe member is fixed to the bottom side plate.

[0013] Further, the bracket member includes a first support plate and a second support plate that are spaced apart and fixed to the periphery of the mounting pipe member. Both ends of the first support plate are respectively fixed to the second tail beam member and the first side plate, and both ends of the second support plate are respectively fixed to the first side plate and the second side plate.

[0014] Further, the bracket member further includes a stabilizing plate, which is bent from a side of the second support plate facing the bottom side plate and is fixed to the bottom side plate;

[0015] Along the direction from the main beam member to the frame mounting member, the second support plate is located on a side of the first support plate away from the main beam member, and the stabilizing plate is located on a side of the second support plate away from the first support plate.

[0016] Further, the reinforcing member further includes a sealing plate, which is fixed to the bottom plate and is connected between the force transmission plate and the second tail beam member;

[0017] Along the direction from the main beam member to the frame mounting member, the first side plate extends from the force transmission plate and is connected to the sealing plate, and the second side plate extends from the second tail beam member and is connected to the sealing plate.

[0018] Further, the bottom plate is arranged in a triangular plate shape, and the force transmission plate is bent from a side edge of the bottom plate deviating from the second tail beam member.

[0019] Further, the first tail beam member and the second tail beam member extend obliquely from the end of the main beam member, and the first tail beam member is arranged deviating from the second tail beam member.

[0020] The present application also provides a vehicle, including a subframe and the longitudinal beam structure as described above, and the subframe is connected to the frame mounting member.

[0021] Compared with the prior art, the longitudinal beam structure of the present application is provided with a first tail beam member, a second tail beam member and a force transmission plate, so that the longitudinal beam structure has at least three force transmission paths. When the longitudinal beam structure is impacted by an external force, the impact force on the main beam member can be effectively dispersed, improving the safety of the longitudinal beam structure. Moreover, the frame mounting member connects the bottom plate, the second tail beam member and the force transmission plate, so that the reinforcing member, the longitudinal beam main body and the frame mounting member can be regarded as a whole, improving the connection stability of the frame mounting member. Furthermore, the frame mounting member can bear a higher load, and the longitudinal beam structure can also better filter vibration and noise.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0024] Figure 1 is a perspective view of the longitudinal beam structure of the present application.

[0025] Figure 2 is a perspective view of the longitudinal beam structure from another perspective of the present application.

[0026] Figure 3 is an exploded view of the longitudinal beam structure of the present application.

[0027] Figure 4 is Figure 3 a perspective view of the reinforcing member in the longitudinal beam structure.

[0028] Figure 5 is a perspective view of the longitudinal beam structure from another perspective of the present application.

[0029] Figure 6 is Figure 5 a perspective view of the combined bottom side plate, the first side plate and the second side plate in

[0030] Figure 7 is Figure 5 a perspective view of the mounting bracket in

[0031] Figure 8 is Figure 5 a perspective view of the mounting bracket from another perspective in

[0032] Description of the attached reference numerals: 1 - main beam body; 11 - main beam member; 12 - first tail beam member; 13 - second tail beam member; 14 - middle connecting plate; 2 - reinforcement member; 21 - bottom plate; 22 - force transmission plate; 23 - sealing plate; 3 - vehicle frame mounting member; 31 - mounting frame; 311 - support member; 3111 - first support plate; 3112 - second support plate; 3113 - stabilizing plate; 3114 - first arc portion; 3115 - second arc portion; 3116 - first reinforcement folding plate; 3117 - second reinforcement folding plate; 312 - mounting pipe fitting; 3121 - inner hole of the mounting pipe fitting; 32 - bottom side plate; 33 - first side plate; 331 - first abutting folding plate; 34 - second side plate; 341 - second abutting folding plate. Detailed implementation manners

[0033] Here, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0034] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), then such terms are only used to explain the relative positional relationships and movement conditions between components in a specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0035] As Figure 1 and Figure 2 shown, the longitudinal beam structure of the present application includes a main beam body 1, a reinforcement member 2, and a vehicle frame mounting member 3. Among them, the main beam body 1 includes a main beam member 11, and a first tail beam member 12 and a second tail beam member 13 extending from the end of the main beam member 11. Specifically, both the first tail beam member 12 and the second tail beam member 13 extend obliquely from the end of the main beam member 11, and the first tail beam member 12 is disposed deviating from the second tail beam member 13.

[0036] The reinforcement member 2 includes a bottom plate 21 and a force transmission plate 22. The bottom plate 21 is connected to the second tail beam member 13, the force transmission plate 22 is disposed on the bottom plate 21, and one side edge of the force transmission plate 22 is connected to the main beam member 11. The vehicle frame mounting member 3 is fixed to the bottom plate 21 and is respectively connected to the second tail beam member 13 and the force transmission plate 22.

[0037] With such a setting, when the longitudinal beam structure of the present application is impacted by an external force, the impact force in the main beam member 11 can be dispersed and transmitted through at least three force transmission paths, namely, the first tail beam member 12, the second tail beam member 13, and the force transmission plate 22, thereby effectively dispersing the impact force in the main beam member 11 and improving the safety of the longitudinal beam structure. Moreover, the frame mounting member 3 is connected to the bottom plate 21, the second tail beam member 13, and the force transmission plate 22, so that the reinforcement member 2, the longitudinal beam main body 1, and the frame mounting member 3 can be regarded as a whole, improving the connection stability of the frame mounting member 3. As a result, the frame mounting member 3 can bear a greater load, and the longitudinal beam structure can also better filter vibrations and noises.

[0038] Further in combination with Figures 3 to 5 As shown, in some embodiments, the angle A between the first tail beam member 12 and the main beam member 11 and the angle B between the second tail beam member 13 and the main beam member 11 are preferably but not limited to obtuse angles, while the angle C between the first tail beam member 12 and the second tail beam member 13 is preferably an acute angle. To improve the stability between the first tail beam member 12 and the second tail beam member 13, the longitudinal beam main body 1 may further include a middle connecting plate 14, and the middle connecting plate 14 is connected between the first tail beam member 12 and the second tail beam member 13.

[0039] The reinforcement member 2 can not only transmit the impact force in the main beam member 11, but also provide a stable connection position for the frame mounting member 3. Specifically, the bottom plate 21 is arranged in a triangular plate shape, and the force transmission plate 22 is bent from a side edge of the bottom plate 21 that deviates from the second tail beam member 13. The bottom plate 21 and the force transmission plate 22 are integrally bent. It should be noted that due to the complexity of the structure and assembly of the longitudinal beam structure, the bottom plate 21 is approximately arranged in a triangular plate shape, that is, among the three side edges of the bottom plate 21, some positions are arranged in arc shapes, straight line shapes, etc.

[0040] The reinforcement member 2 may further include a sealing plate 23. The sealing plate 23 is fixed to the bottom plate 21 and is connected between the force transmission plate 22 and the second tail beam member 13. Specifically, the sealing plate 23 is connected to a side edge of the bottom plate 21, and the force transmission plate 22 extends from the main beam member 11 and is connected to the sealing plate 23. The side edge of the bottom plate 21 for connecting with the sealing plate 23 is different from the side edge of the bottom plate 21 for connecting with the second tail beam member 13 and the side edge for connecting with the force transmission plate 22. Along the direction from the main beam member 11 to the frame mounting member 3, the edge of the bottom plate 21 extends beyond the first tail beam member 12, and the edge of the second tail beam member 13 extends beyond the bottom plate 21.

[0041] Since the bottom plate 21 is arranged in a triangular plate shape, the force transmission plate 22 and the sealing plate 23 are fixed to the bottom plate 21, and the force transmission plate 22 and the sealing plate 23 are both connected to the second tail beam member 13, the bottom plate 21 and the second tail beam member 13, the force transmission plate 22 and the sealing plate 23 can approximately form a triangular box body, and by utilizing the stable feature of the triangle, when the frame mounting member 3 is fixed in the triangular box body, the connection stability of the frame mounting member 3 can be effectively improved, so that the frame mounting member 3 can withstand more connection loads, and the longitudinal beam structure can also better filter vibration and noise.

[0042] Further integration Figure 6 As shown, in some embodiments, the frame mounting member 3 includes a mounting frame 31, a bottom side plate 32, a first side plate 33 and a second side plate 34. The bottom side plate 32 is fixed to the bottom plate 21, the first side plate 33 is bent from one side of the bottom side plate 32, and the second side plate 34 is bent from one side of the bottom side plate 32 away from the first side plate 33, that is, the first side plate 33 and the second side plate 34 are respectively located on opposite sides of the bottom side plate 32. The mounting frame 31 is fixed to the bottom side plate 32, and each end of the mounting frame 31 is respectively connected to the second tail beam member 13, the first side plate 33 and the second side plate 34.

[0043] The mounting frame 31 includes a bracket member 311 and a mounting pipe member 312. The bracket member 311 is X-shaped, and the bracket member 311 is arranged around the circumference of the mounting pipe member 312, and is respectively connected to the first side plate 33, the second side plate 34 and the second tail beam member 13. The mounting pipe member 312 is fixed to the bottom side plate 32, and the inner hole 3121 of the mounting pipe member 312 is provided with a thread (not shown).

[0044] Further integration Figure 7 and Figure 8 As shown, the bracket member 311 includes a first support plate 3111 and a second support plate 3112. To facilitate the fixing of the bracket member 311 and the mounting pipe member 312, the first support plate 3111 and the second support plate 3112 are separately provided, that is, the first support plate 3111 and the second support plate 3112 are fixed to the peripheral side of the mounting pipe member 312 at intervals. In order to make the first support plate 3111 and the second support plate 3112 and the mounting pipe member 312 more firmly fixed, a first arc portion 3114 is provided in the middle of the first support plate 3111, and a second arc portion 3115 is provided in the middle of the second support plate 3112, and the first arc portion 3114 and the second arc portion 3115 are attached to the peripheral side of the mounting pipe member 312.

[0045] The first support plate 3111 and the second support plate 3112 are fixed to the mounting pipe 312 by welding. Of course, the first support plate 3111 and the second support plate 3112 can also be fixed to the mounting pipe 312 by screwing, riveting, etc., which will not be described in detail herein.

[0046] In the direction from the main beam member 11 to the frame mounting member 3, the second support plate 3112 is located on the side of the first support plate 3111 away from the main beam member 11. Both ends of the first support plate 3111 are respectively fixed to the second tail beam member 13 and the first side plate 33, and both ends of the second support plate 3112 are respectively fixed to the first side plate 33 and the second side plate 34.

[0047] Furthermore, first reinforcement folded plates 3116 are provided at both ends of the first support plate 3111, and second reinforcement folded plates 3117 are provided at both ends of the second support plate 3112. The first reinforcement folded plates 3116 are attached to the second tail beam member 13 and the first side plate 33, and the second reinforcement folded plates 3117 are attached to the first side plate 33 and the second side plate 34. With such an arrangement, the connection area between the first support plate 3111 and the second tail beam member 13 and the first side plate 33 is increased through the first reinforcement folded plates 3116, and the connection area between the second support plate 3112 and the first side plate 33 and the second side plate 34 is increased through the second reinforcement folded plates 3117, thereby improving the stability when the mounting bracket 31 is connected to the bottom side plate 32, the first side plate 33, and the second side plate 34.

[0048] To further improve the connection stability of the support member 311, the support member 311 may further include a stabilizing plate 3113. The stabilizing plate 3113 is bent from the side of the second support plate 3112 facing the bottom side plate 32, and the stabilizing plate 3113 is fixed to the bottom side plate 32. In the direction from the main beam member 11 to the frame mounting member 3, the stabilizing plate 3113 is located on the side of the second support plate 3112 away from the first support plate 3111 to increase the connection load of the mounting bracket 31.

[0049] In some other embodiments, the first support plate 3111 and the second support plate 3112 may also be integrally provided, wherein the first arc portion 3114 of the first support plate 3111 is connected to the second arc portion 3115 of the second support plate 3112 and sleeved on the mounting pipe fitting 312.

[0050] The mounting bracket 31 is connected to the first side plate 33, the second side plate 34, and the second tail beam member 13 through the support member 311 and is connected to the bottom side plate 32 through the mounting pipe fitting 312, so that the mounting bracket 31 is fixed in multiple directions, improving the radial and axial stiffness of the mounting pipe fitting 312. Furthermore, the mounting pipe fitting 312 can bear a greater load, enhancing the safety of the longitudinal beam structure, and also enabling a lightweight design of the support member 311.

[0051] In some embodiments, one side of the first side plate 33 is connected to the force transmission plate 22, and one side of the second side plate 34 is connected to the second tail beam member 13. Specifically, along the direction from the main beam member 11 to the frame mounting member 3, the first side plate 33 extends from the force transmission plate 22 and is connected to the sealing plate 23, and the second side plate 34 extends from the second tail beam member 13 and is connected to the sealing plate 23. In order to improve the connection strength between the first side plate 33 and the second side plate 34 and the sealing plate 23, a first abutting folding plate 331 is provided on the side of the first side plate 33 facing away from the force transmission plate 22, and a second abutting folding plate 341 is provided on the side of the second side plate 34 facing away from the second tail beam member 13, and the first abutting folding plate 331 and the second abutting folding plate 341 are abutted against the sealing plate 23.

[0052] The bottom side plate 32, the first side plate 33 and the second side plate 34 can form a "J"-shaped box body, and along the direction from the main beam 11 to the frame mounting member 3, the first side plate 33 extends from the force transmission plate 22 to the closing plate 23, and the second side plate 34 extends from the second tail beam member 13 to the closing plate 23. Therefore, when the longitudinal beam structure is hit by external force, the impact force in the main beam member 11 can be dispersed and transmitted through the "J"-shaped box body. Combining the above three force transmission paths can further disperse the impact force in the main beam member 11 and improve the safety of the longitudinal beam structure.

[0053] Furthermore, the “J”-shaped box body composed of the bottom side plate 32, the first side plate 33 and the second side plate 34 can disperse the impact force in the main beam member 11 while dispersing the impact force in the force transmission plate 22 through the first side plate 33 and dispersing the impact force in the second tail beam member 13 through the second side plate 34.

[0054] The present application also provides a vehicle, including a subframe (not shown) and the longitudinal beam structure as described above, wherein the subframe is connected to the frame mounting member 3. The vehicle of the present application is provided with the longitudinal beam structure as described above, and when the vehicle collides, four force transmission paths are formed through the “J”-shaped box body composed of the bottom side plate 32, the first side plate 33 and the second side plate 34 in the longitudinal beam structure, the first tail beam member 12, the second tail beam member 13, and the force transmission plate 22 (for details, please refer to Figure 2 and Figure 5 The force transmission paths D1, D2, D3 and D4 in the longitudinal beam 11 can effectively and quickly disperse and transmit the impact force in the main beam 11, thereby improving the safety of the longitudinal beam structure. Moreover, the reinforcement member 2, the longitudinal beam body 1 and the frame mounting member 3 can be used as a whole, thereby improving the connection stability between the subframe and the frame mounting member 3, thereby allowing the frame mounting member 3 to withstand more connection loads, and also allowing the longitudinal beam structure to better filter vibration and noise, thereby improving the NVH performance of the vehicle.

[0055] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A longitudinal beam structure, characterized in that, include: A longitudinal beam body, the longitudinal beam body comprising a main beam member and a first tail beam member and a second tail beam member extending from ends of the main beam member; A reinforcing member, the reinforcing member comprising a bottom plate and a force transmission plate, the bottom plate being connected to the second tail beam member, the force transmission plate being arranged on the bottom plate, and one side of the force transmission plate being connected to the main beam member; A vehicle frame mounting member is fixed to the base plate and is respectively connected to the second tail beam member and the force transmission plate.

2. The longitudinal beam structure according to claim 1, characterized in that, The frame mounting component includes a mounting frame, a bottom side plate, and a first side plate bent from one side of the bottom side plate, one side of the first side plate is connected to the force transmission plate, the mounting frame is fixed to the bottom side plate, and the ends of the mounting frame are respectively connected to the first side plate and the second tail beam component.

3. The longitudinal beam structure according to claim 2, characterized in that, The frame mounting member also includes a second side plate, which is bent from a side edge of the bottom side plate away from the first side plate, and one side of the second side plate is connected to the second tail beam member, and one end of the mounting frame is connected to the second side plate.

4. The longitudinal beam structure according to claim 3, characterized in that, The mounting frame includes a bracket member and a mounting pipe member. The bracket member is arranged around the mounting pipe member and is respectively connected to the first side plate, the second side plate and the second tail beam member. The mounting pipe member is fixed to the bottom side plate.

5. The longitudinal beam structure according to claim 4, characterized in that, The bracket member includes a first support plate and a second support plate fixed at intervals on the peripheral side of the mounting pipe member, two ends of the first support plate are respectively fixed to the second tail beam member and the first side plate, and two ends of the second support plate are respectively fixed to the first side plate and the second side plate.

6. The longitudinal beam structure according to claim 5, wherein The bracket member further includes a stabilizing plate, which is bent from the second support plate toward one side of the bottom side plate and fixed to the bottom side plate; Along the direction from the main beam to the frame mounting member, the second support plate is located on a side of the first support plate away from the main beam, and the stabilizing plate is located on a side of the second support plate away from the first support plate.

7. The longitudinal beam structure according to claim 3, characterized in that, The reinforcing member further comprises a sealing plate, which is fixed to the bottom plate and connected between the force transmission plate and the second tail beam member; Along the direction from the main beam to the frame mounting member, the first side plate extends from the force transmission plate and is connected to the sealing plate, and the second side plate extends from the second tail beam and is connected to the sealing plate.

8. The longitudinal beam structure according to claim 1, characterized in that The bottom plate is arranged in a triangular plate shape, and the force transmission plate is arranged by bending from a side edge of the bottom plate away from the second tail beam member.

9. The longitudinal beam structure according to claim 1, characterized in that, The first tail beam component and the second tail beam component extend obliquely from the end of the main beam component, and the first tail beam component is arranged away from the second tail beam component.

10. A vehicle, characterized in that, The vehicle comprises a subframe and a longitudinal beam structure according to any one of claims 1 to 9, wherein the subframe is connected to the frame mounting member.

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