Vehicle body structure and vehicle

Abstract

The utility model discloses a vehicle body structure and a vehicle, and relates to the technical field of vehicles, the vehicle body structure is used for being connected with a vehicle frame, and the vehicle body structure comprises a floor; the cross beam is connected with the floor and is provided with an accommodating cavity; the supporting structure is arranged in the accommodating cavity and is connected with the inner wall of the accommodating cavity; the fastener penetrates through the supporting structure and the cross beam and is connected with the frame in a locking mode. According to the technical scheme, the connecting structure between the floor and the frame is improved, and the connecting strength between the floor and the frame is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a vehicle body structure and a vehicle. Background Art

[0002] In the field of automotive engineering, especially in the design of vehicle chassis, the connection method between the floor of the vehicle body and the frame is crucial for the overall performance and durability of the vehicle. Traditionally, the floor is directly fixed to the frame through beams on the vehicle body. Since the beams are usually single-layer sheet metal parts, the structural strength at the installation points is relatively weak. The connection points often become the areas in the whole vehicle where stress concentration and fatigue damage are most likely to occur, which may have an adverse impact on the bending stiffness, torsional stiffness and dynamic modal characteristics of the whole vehicle, and further affect the dynamic performance and safety of the vehicle. Summary of the Utility Model

[0003] The main object of the utility model is to propose a vehicle body structure and a vehicle, aiming to improve the connection strength between the vehicle body floor and the frame.

[0004] To achieve the above object, the vehicle body structure proposed by the utility model is used to connect with the frame, and the vehicle body structure includes:

[0005] A floor;

[0006] A cross beam, connected to the floor, and the cross beam has a receiving cavity;

[0007] A support structure, arranged in the receiving cavity and connected to the inner wall of the receiving cavity;

[0008] A fastener, passing through the support structure and the cross beam and locking and connecting with the frame.

[0009] In an embodiment, a first through hole for the fastener to pass through is arranged on the inner wall of the receiving cavity, and the support structure includes:

[0010] A sleeve, connected to the periphery of the first through hole;

[0011] A bracket, arranged at one end of the sleeve away from the first through hole and connected to the inner wall of the receiving cavity.

[0012] In an embodiment, the vehicle body structure further includes a longitudinal beam, and the bracket and the cross beam are respectively connected to the longitudinal beam.

[0013] In an embodiment, a first folded edge is bent at one end of the cross beam, and a second folded edge is bent at one end of the bracket close to the longitudinal beam, and the first folded edge and the second folded edge are respectively connected to the longitudinal beam.

[0014] In one embodiment, the accommodating cavity has a bottom wall and side walls adjacent to the bottom wall. Third flanges are bent at both ends of the bracket along the vehicle length direction, and the third flanges are connected to the side walls of the accommodating cavity.

[0015] In one embodiment, a fourth flange is bent at one end of the bracket away from the longitudinal beam, and a fifth flange is bent on the fourth flange. The fourth flange is connected to the bottom wall, and the fifth flange is connected to the side wall.

[0016] In one embodiment, a first limiting body protrudes from one end of the sleeve towards the first through hole, and the first limiting body is inserted into the first through hole; and / or, a second limiting body protrudes from the end of the sleeve away from the first through hole, and a second through hole is provided on the bracket, and the second limiting body is inserted into the second through hole.

[0017] In one embodiment, a third through hole is provided on the floor, and the third through hole is used for the fastener to penetrate into the accommodating cavity.

[0018] In one embodiment, the vehicle body structure further includes a plug cover, and the plug cover is hermetically connected to the third through hole.

[0019] The present invention also provides a vehicle, including the vehicle body structure described above.

[0020] In the technical solution of the present invention, the vehicle body structure has a floor and a cross beam. The cross beam is connected to the floor to support the floor. The cross beam has an accommodating cavity, and a support structure is arranged in the accommodating cavity. The support structure is connected to the inner wall of the accommodating cavity to provide support for the cross beam, improving the bending resistance and torsional resistance of the cross beam. In addition, the vehicle body structure further includes a fastener, and the fastener penetrates through the support structure and the cross beam and is locked and fixed to the vehicle frame. In this way, the support structure can provide support for the connection position between the cross beam and the vehicle frame and disperse the acting force borne by the cross beam at the position where the fastener penetrates, thereby improving the connection strength between the cross beam and the vehicle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the vehicle body structure provided by the present invention;

[0023] Figure 2 ForFigure 1 Partial enlarged view at position A in

[0024] Figure 3 Schematic cross-sectional view of the vehicle body structure provided by the present utility model along the vehicle length direction;

[0025] Figure 4 is Figure 3 Partial enlarged view at position B in

[0026] Figure 5 is Figure 3 Partial enlarged view at position C in

[0027] Figure 6 Schematic cross-sectional view of the vehicle body structure provided by the present utility model along the vehicle width direction;

[0028] Figure 7 Schematic structure view of the sleeve in the vehicle body structure provided by the present utility model;

[0029] Figure 8 Schematic structure view of the bracket in the vehicle body structure provided by the present utility model.

[0030] Explanation of the reference numerals in the drawings:

[0031] 100, floor; 200, cross beam; 210, first hem; 300, support structure; 310, sleeve; 311, first limiting body; 312, second limiting body; 320, bracket; 321, second hem; 322, third hem; 323, fourth hem; 324, fifth hem; 400, fastener; 500, longitudinal beam; 600, plug.

[0032] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0036] In the current connection structure between the vehicle body and the vehicle frame, the connection points between the vehicle body and the vehicle frame are generally fixed by bolts through a single-layer sheet metal. Due to the low structural strength of the single-layer sheet metal, the connection points become the positions where the entire vehicle is most likely to crack or fail, affecting the overall structural strength and reliability of the vehicle.

[0037] For this reason, the present technical solution proposes a vehicle body structure for connecting with a vehicle frame. The vehicle body structure includes: a floor 100; a cross beam 200 connected to the floor 100; the cross beam 200 has a receiving cavity; a support structure 300 disposed in the receiving cavity and connected to the inner wall of the receiving cavity; and a fastener 400 passing through the support structure 300 and the cross beam 200 and being locked and connected to the vehicle frame.

[0038] In the technical solution of the present utility model, the vehicle body structure has a floor 100 and a cross beam 200. The cross beam 200 is connected to the floor 100 to support the floor 100. The cross beam 200 has a receiving cavity, and a support structure 300 is disposed in the receiving cavity. The support structure 300 is connected to the inner wall of the receiving cavity to provide support for the cross beam 200, improving the bending resistance and torsional resistance of the cross beam 200. In addition, the vehicle body structure further includes a fastener 400. The fastener 400 passes through the support structure 300 and the cross beam 200 and is locked and fixed to the vehicle frame. In this way, the support structure 300 can provide support for the connection position between the cross beam 200 and the vehicle frame and disperse the acting force borne by the cross beam 200 at the position where the fastener 400 passes through, thereby improving the connection strength between the cross beam 200 and the vehicle frame.

[0039] Such as Figures 1 to 8, in an embodiment of the present utility model, the vehicle body structure is disposed at the connection position between the vehicle body and the vehicle frame and is used to connect the vehicle body and the vehicle frame. The vehicle body structure includes a floor 100. A cross beam 200 is disposed at the bottom of the floor 100. The cross beam 200 extends along the width direction of the vehicle. The cross beam 200 is a sheet metal structure. The cross beam 200 is fixedly welded to the bottom of the floor 100 to provide support for the floor 100. An accommodation cavity is provided inside the cross beam 200. The accommodation cavity extends along the width direction of the vehicle. Opening the accommodation cavity can reduce the self-weight of the cross beam 200, thereby improving the lightweight level of the vehicle. In addition, a support structure 300 is disposed inside the accommodation cavity. The support structure 300 is connected to the inner wall of the accommodation cavity. The support structure 300 can be a plate-like structure that fits the inner wall of the accommodation cavity. The support structure 300 provides support for the inner wall of the accommodation cavity. In this way, the structural strength of the cross beam 200 itself can be improved, and then the structural strength of the vehicle body can be improved. In addition, the vehicle body structure further includes a fastener 400. The fastener 400 can be a bolt or a rivet. The fastener 400 penetrates through the support structure 300 and the cross beam 200 and is locked and connected to the vehicle frame. Compared with the direct locking connection between the traditional cross beam 200 and the vehicle frame, in this solution, at the connection point, the fastener 400 connects the support structure 300, the cross beam 200 and the vehicle frame together. The support structure 300 can provide support for the cross beam 200 at the connection point. At the same time, the force received by the cross beam 200 at this position can also be dispersed through the support structure 300. In this way, the ability of the cross beam 200 to withstand torsional and bending effects at the connection point can be improved, and then the connection strength between the floor 100 and the vehicle frame is improved.

[0040] Such as Figure 3 and Figure 6, an embodiment of the present utility model provides an implementation of the support structure 300. In this embodiment, a first through hole for the fastener 400 to pass through is provided on the inner wall of the accommodation cavity. The support structure 300 includes: a sleeve 310 connected to the periphery of the first through hole; a bracket 320 provided at one end of the sleeve 310 away from the first through hole and connected to the inner wall of the accommodation cavity. Among them, the first through hole is provided on the bottom wall of the accommodation cavity away from the floor 100. The sleeve 310 is a circular barrel-shaped structure, coaxially arranged with the first through hole, and one end of the sleeve 310 abuts against the periphery of the first through hole and is connected by welding or other means. The other end of the sleeve 310 is provided with a bracket 320. The bracket 320 extends parallel to the bottom wall of the accommodation cavity, and one end is connected to the sleeve 310 and the other end is welded and fixed to the inner wall of the accommodation cavity. In this way, the bracket 320 divides the accommodation cavity into upper and lower chambers. The sleeve 310 is arranged in the lower chamber. The bracket 320, the sleeve 310, and the cross beam 200 support each other, so as to improve the strength of the cross beam 200 itself; when connecting, one end of the fastener 400 can pass through the sleeve 310 and the first through hole from above and then be connected to the lower vehicle frame. In this way, the cross-sectional dimension of the connection position can be increased. When the cross beam 200 and the vehicle frame are subjected to torsional action at the position of the first through hole, the acting force can be dispersed between the sleeve 310 and the cross beam 200, reducing local stress concentration, thereby improving the connection strength between the floor 100 and the vehicle frame.

[0041] As Figure 1 and Figure 6 , in an embodiment of the present utility model, the vehicle body structure further includes a longitudinal beam 500, and the bracket 320 and the cross beam 200 are respectively connected to the longitudinal beam 500. In this embodiment, a longitudinal beam 500 is provided at each end of the cross beam 200 in the vehicle body width direction. The longitudinal beam 500 extends in the vehicle length direction. The cross beam 200 and the longitudinal beam 500 both form a part of the vehicle body structure. The above-mentioned bracket 320 and the cross beam 200 can be respectively welded and fixed to the longitudinal beam 500. In this way, the cross beam 200, the longitudinal beam 500, and the bracket 320 support each other, which can further enhance the strength of the vehicle body structure and improve the safety and reliability of the vehicle.

[0042] In an embodiment of the present utility model, a first folded edge 210 is bent at one end of the cross beam 200, and a second folded edge 321 is bent at one end of the bracket 320 close to the longitudinal beam 500. The first folded edge 210 and the second folded edge 321 are respectively connected to the longitudinal beam 500. As Figure 2 and Figure 8, at least two edges of the cross beam 200 are provided with first flanges 210. The first flanges 210 are integrally bent and formed with the cross beam 200. In addition, a second flange 321 is integrally bent and formed at one end of the bracket 320 close to the longitudinal beam 500. The first flange 210 and the second flange 321 are respectively attached to the side wall of the longitudinal beam 500 and welded together. The settings of the first flange 210 and the second flange 321 can facilitate the welding of the bracket 320 and the cross beam 200 to the longitudinal beam 500 respectively, improve the processability, and also increase the contact areas of the bracket 320 and the cross beam 200 with the longitudinal beam 500 respectively, which is beneficial to improving the connection strength of the bracket 320 and the cross beam 200 to the longitudinal beam 500 respectively.

[0043] As Figure 3 and Figure 8 , in an embodiment of the present utility model, the accommodating cavity has a bottom wall and side walls adjacent to the bottom wall. Third flanges 322 are bent at both ends of the bracket 320 along the vehicle length direction, and the third flanges 322 are connected to the side walls of the accommodating cavity. Among them, the third flanges 322 are integrally bent and formed with the bracket 320. The third flanges 322 can be bent towards the ground side or away from the ground. The third flanges 322 are attached to the side walls of the accommodating cavity and welded or bonded and fixed thereto. In this way, the contact area at the connection position between the bracket 320 and the side walls of the accommodating cavity can be increased and the local stress can be reduced, which is beneficial to improving the connection strength between the bracket 320 and the cross beam 200 and the supporting ability of the bracket 320 to the sleeve 310.

[0044] As Figure 6 and Figure 8 , a fourth flange 323 is bent at one end of the bracket 320 away from the longitudinal beam 500, and a fifth flange 324 is bent on the fourth flange 323. The fourth flange 323 is connected to the bottom wall, and the fifth flange 324 is connected to the side wall. Among them, the fourth flange 323 is bent towards the bottom wall side and attached to the bottom wall. The fifth flange 324 is arranged on both sides of the fourth flange 323 along the vehicle length direction and attached to the side walls of the accommodating cavity. In this way, the connection points between the bracket 320 and the cross beam 200 can be further increased, and the connection strength between the bracket 320 and the cross beam 200 can be improved.

[0045] As Figure 5 and Figure 7, in an embodiment of the present utility model, a first limiting body 311 is convexly provided on the sleeve 310 towards one end of the first through hole. The first limiting body 311 is inserted into the first through hole. The first limiting body 311 may be an annular structure convexly provided at the end of the sleeve 310. The first limiting body 311 and the end of the sleeve 310 form a stepped structure. During assembly, the first limiting body 311 can be embedded into the first through hole. At this time, the stepped structure cooperates with the first through hole to limit the sleeve 310. In addition, the inner wall of the first through hole also provides radial support for the first limiting body 311 and the sleeve 310. In this way, it not only facilitates the positioning between the sleeve 310 and the cross beam 200 during assembly, but also helps to improve the connection strength between the sleeve 310 and the cross beam 200, and further improves the connection strength between the vehicle body structure and the vehicle frame. As Figure 4 and Figure 7 , in another embodiment of the present utility model, a second limiting body 312 is convexly provided on the sleeve 310 at the end far from the first through hole. A second through hole is provided on the bracket 320. The second limiting body 312 is inserted into the second through hole. The second through hole is for a fastener 400 to pass through. Similar to the first limiting body 311, the second limiting body 312 may also be an annular structure convexly provided at the end of the sleeve 310. The first limiting body 311 and the second limiting body 312 are provided at opposite ends of the sleeve 310. The second limiting body 312 and the end of the sleeve 310 form a stepped structure. During assembly, the second limiting body 312 can be embedded into the second through hole. At this time, the stepped structure cooperates with the second through hole to limit the sleeve 310. In addition, the inner wall of the second through hole also provides radial support for the second limiting body 312 and the sleeve 310. In this way, it not only facilitates the positioning between the sleeve 310 and the cross beam 200 during assembly, but also helps to improve the connection strength between the sleeve 310 and the cross beam 200, and further improves the connection strength between the vehicle body structure and the vehicle frame.

[0046] In another embodiment of the present utility model, for the convenience of assembly, a third through hole is provided on the floor 100. The third through hole is used for the fastener 400 to penetrate into the accommodating cavity. The third through hole is coaxially arranged with the first through hole, and the diameter of the third through hole is larger than the diameter of the fastener 400. In this way, during assembly, the floor 100, the cross beam 200, the longitudinal beam 500 and the support structure 300 can be first assembled into a whole, and then the fastener 400 is penetrated into the first through hole and the vehicle body structure is connected to the vehicle frame. In this way, the general assembly difficulty of the vehicle can be reduced and the processability can be improved.

[0047] As Figure 3 and Figure 6, in an embodiment of the present utility model, the vehicle body structure further includes a plug 600. The plug 600 is sealingly connected to the third through hole. The plug 600 can directly select a conventional model on the market. The size of the plug 600 is adapted to the third through hole. After the vehicle body structure and the vehicle frame are assembled, the plug 600 can be used to seal the third through hole, so as to prevent foreign objects from entering the passenger compartment where the floor 100 is located through the third through hole, improving the sealing performance of the passenger compartment and being beneficial to improving the waterproof performance and comfort of the vehicle.

[0048] The present utility model further provides a vehicle, which includes a vehicle frame and a vehicle body connected to the vehicle frame. The vehicle body has the vehicle body structure in the above embodiment. Since this vehicle adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0049] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A vehicle body structure, used to connect with a vehicle frame, characterized in that: The vehicle body structure comprises: floor; A crossbeam connected to the floor, wherein the crossbeam has a receiving cavity; A supporting structure, disposed in the accommodating cavity and connected to an inner wall of the accommodating cavity; A fastener penetrates through the support structure and the crossbeam and is locked to the frame.

2. The vehicle body structure according to claim 1, characterized in that: The inner wall of the accommodating cavity is provided with a first through hole for the fastener to pass through, and the supporting structure comprises: a sleeve connected to the periphery of the first through hole; The bracket is arranged on one end of the sleeve away from the first through hole and connected to the inner wall of the accommodating cavity.

3. The vehicle body structure according to claim 2, characterized in that: The vehicle body structure further comprises a longitudinal beam, and the bracket and the cross beam are respectively connected to the longitudinal beam.

4. The vehicle body structure according to claim 3, characterized in that: One end of the cross beam is bent to form a first folded edge, and one end of the bracket close to the longitudinal beam is bent to form a second folded edge. The first folded edge and the second folded edge are respectively connected to the longitudinal beam.

5. The vehicle body structure according to any one of claims 3 to 4, characterized in that: The accommodating cavity has a bottom wall and a side wall adjacent to the bottom wall. The bracket is bent at both ends along the length direction of the vehicle to provide a third folded edge, and the third folded edge is connected to the side wall of the accommodating cavity.

6. The vehicle body structure according to claim 5, characterized in that: A fourth folded edge is bent on one end of the bracket away from the longitudinal beam, a fifth folded edge is bent on the fourth folded edge, the fourth folded edge is connected to the bottom wall, and the fifth folded edge is connected to the side wall.

7. The vehicle body structure according to claim 2, characterized in that: A first limiting body is protruded from one end of the sleeve toward the first through hole, and the first limiting body is plugged into the first through hole; and / or a second limiting body is protruded from one end of the sleeve away from the first through hole, a second through hole is arranged on the bracket, and the second limiting body is plugged into the second through hole.

8. The vehicle body structure according to claim 1, characterized in that: A third through hole is arranged on the floor, and the third through hole is used for allowing the fastener to pass through the accommodating cavity.

9. The vehicle body structure according to claim 8, characterized in that: The vehicle body structure further includes a plugging cover, and the plugging cover is sealed and connected to the third through hole.

10. A vehicle, characterized in that: A vehicle body structure comprising any one of claims 1 to 9.

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