Rear floor framework and vehicle

Abstract

The utility model provides a rear floor framework and a vehicle, and relates to the technical field of vehicle manufacturing. The rear floor framework comprises a rear floor front cross beam; the two rear floor longitudinal beams are connected to the two ends of the rear floor front cross beam respectively; the battery pack mounting bracket is connected to the rear floor front cross beam; and the reinforcing piece is connected between the rear floor front cross beam and the rear floor longitudinal beam, and the reinforcing piece is connected with the battery pack mounting bracket. The rear floor framework can improve the torsional rigidity and bending rigidity of an automobile body, the dynamic rigidity of a rear suspension trailing arm installation point is guaranteed, the anti-torsion performance and the control performance of an automobile are improved, and generation and transmission of road noise are restrained.

Description

Technical Field

[0001] This application relates to the technical field of vehicle manufacturing, and particularly to a rear floor skeleton and a vehicle having the rear floor skeleton. Background Art

[0002] The dynamic stiffness and static stiffness of an automobile body skeleton are important factors affecting the anti-torsion performance, handling performance, and road noise performance of an automobile. New energy vehicles are heavier than traditional fuel vehicles, and have higher requirements for the body stiffness. Using the traditional rear floor skeleton structure cannot meet the body performance requirements. Utility Model Content

[0003] This application provides a rear floor skeleton and a vehicle. The rear floor skeleton can improve the torsional stiffness and bending stiffness of the body, which is beneficial to improving the anti-torsion performance and handling performance of the automobile.

[0004] On the one hand, this application provides a rear floor skeleton, including:

[0005] A front rear floor cross member;

[0006] Two rear floor longitudinal beams, which are respectively connected to both ends of the front rear floor cross member;

[0007] A battery pack mounting bracket, which is connected to the front rear floor cross member;

[0008] A reinforcing member, which is connected between the front rear floor cross member and the rear floor longitudinal beam, and the reinforcing member is connected to the battery pack mounting bracket.

[0009] In a possible implementation manner, the reinforcing member is a triangular reinforcing structure. The upper surface of the first side of the reinforcing member is connected to the front rear floor cross member, the lower surface of the first side of the reinforcing member is connected to the battery pack mounting bracket, the second side of the reinforcing member is connected to the rear floor longitudinal beam, the third side of the reinforcing member extends from the front rear floor cross member to the rear floor longitudinal beam, and both ends of the third side of the reinforcing member are respectively connected to the front rear floor cross member and the rear floor longitudinal beam.

[0010] In a possible implementation manner, the third side of the reinforcing member is bent to form a first reinforcing surface, and both ends of the first reinforcing surface are bent to form a first overlapping surface and a second overlapping surface, and the first overlapping surface and the second overlapping surface are respectively connected to the front rear floor cross member and the rear floor longitudinal beam.

[0011] In a possible implementation manner, the second side of the reinforcing member is bent to form a second reinforcing surface and a connecting flange, the second reinforcing surface and the connecting flange have an included angle, and the connecting flange is connected to the rear floor longitudinal beam.

[0012] In a possible implementation manner, the second reinforcement surface and the connecting flange are perpendicular to each other.

[0013] In a possible implementation, the battery pack mounting bracket is partially connected to the overlapping edge, and the other part is connected to the front cross beam of the rear floor.

[0014] In a possible implementation manner, the reinforcement is provided with a welding through hole, and an annular reinforcement rib is provided on the edge of the welding through hole.

[0015] In a possible implementation manner, a rear suspension trailing arm is further included, and the rear suspension trailing arm is fixedly mounted on the rear floor longitudinal beam.

[0016] In a possible implementation manner, a bushing is provided at a connection end between the rear suspension trailing arm and the rear floor longitudinal beam, and the bushing is fixedly connected to the rear floor longitudinal beam by mounting bolts.

[0017] On the other hand, the present application provides a vehicle provided with the above-mentioned rear floor frame.

[0018] The rear floor frame and vehicle provided in this application, by setting reinforcement parts to connect the battery pack, battery pack mounting bracket, rear floor front cross beam and rear floor longitudinal beam, can improve the torsional stiffness and bending stiffness of the rear floor frame and the entire vehicle body, ensure the dynamic stiffness of the rear suspension trailing arm mounting point, which is beneficial to improving the vehicle's anti-torsion performance and handling performance, and suppressing the generation and transmission of road noise.

[0019] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the technical solutions provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the present application, and the present application is not limited to the specific implementation methods described below.

[0021] Figure 1 An overall structural diagram of the rear floor frame provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 Partial structural diagram of the rear floor frame;

[0023] Figure 3 A structural diagram of a reinforcement member provided in an embodiment of the present application from one perspective;

[0024] Figure 4 This is a structural diagram of the reinforcement provided in the embodiment of the present application from another perspective.

[0025] Reference numerals:

[0026] 1 - Battery pack; 2 - Battery pack mounting bolt; 3 - Battery pack mounting bracket; 4 - Front cross member of the rear floor; 5 - Reinforcement; 6 - Rear floor longitudinal beam; 7 - Mounting bolt; 8 - Rear suspension trailing arm;

[0027] 51 - First side; 52 - Connecting flange; 53 - First lapping surface; 54 - Second lapping surface;

[0028] 501 - First strengthening surface; 502 - Annular reinforcing rib; 503 - Welding through hole; 504 - Second strengthening surface. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The described embodiments are some but not all of the embodiments of the present application. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0030] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, or an indirect connection through an intermediate medium, or the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0032] In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically and precisely defined.

[0033] The terms "first", "second", "third", "fourth", etc. in the description, claims and above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0034] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] In the description of the embodiments of the present application, the X direction represents the front-rear direction of the vehicle, i.e., the length direction, the Y direction represents the left-right direction of the vehicle, i.e., the width direction, and the Z direction represents the up-down direction of the vehicle, i.e., the height direction.

[0036] The present application will be described in detail below with reference to the drawings and specific embodiments.

[0037] Figure 1 It is the overall structure diagram of the rear floor skeleton provided for the embodiments of the present application. Figure 2 For Figure 1 It is the partial structure diagram of the rear floor skeleton in

[0038] Referring to Figure 1 and Figure 2 As shown, the rear floor skeleton provided in the embodiments of the present application includes a rear floor front cross member 4, two rear floor longitudinal members 6 and a battery pack mounting bracket 3. The rear floor front cross member 4 can extend along the width direction of the vehicle ( Figure 1 the Y direction in Figure 1 ), two rear floor longitudinal members 6 can both extend along the length direction of the vehicle (

[0039] the X direction in

[0040] ), and the two rear floor longitudinal members 6 can be respectively connected to both ends of the rear floor front cross member 4. The battery pack mounting bracket 3 can be connected to the rear floor front cross member 4, and the battery pack is fixed to the rear floor front cross member 4 through the battery pack mounting bracket 3. Figure 2 ]>As shown in the figure, the rear floor skeleton of this embodiment further includes a reinforcing member 5. The reinforcing member 5 is connected between the front rear floor cross member 4 and the rear floor longitudinal member 6, and the reinforcing member 5 is connected to the battery pack mounting bracket 3.

[0041] In the above embodiment, the rear floor skeleton is formed by the front rear floor cross member 4, two rear floor longitudinal members 6 on the left and right sides of the vehicle, and a rear rear floor cross member (not shown in the figure) to form a frame structure, jointly defining a cavity for enhancing the strength of the rear floor assembly, facilitating the enhancement of the load-bearing capacity of the rear floor, and enhancing the stability performance of the whole vehicle. Among them, the connection stiffness between the front rear floor cross member 4 and the rear floor longitudinal member 6 is the key to affecting the overall stiffness of the rear floor skeleton. If deformation occurs, it will be transmitted to the rear end of the vehicle body and the mounting bolt 7 of the rear suspension trailing arm, seriously affecting the vehicle handling performance.

[0042] By setting the reinforcing member 5, its side is fixedly connected to the rear floor longitudinal member 6, and its front end is fixedly connected to the front rear floor cross member 4. At the same time, a part of the battery pack mounting bracket 3 is fixedly connected to the surface of the reinforcing member 5, and another part is fixedly connected to the surface of the front rear floor cross member 4. The battery pack 1 is fixedly connected to the battery pack mounting bracket 3 through the battery pack mounting bolt 2. Thus, the battery pack 1, the front rear floor cross member 4, the reinforcing member 5 and the rear floor longitudinal member 6 are connected to form an integral structure, which will significantly improve the stiffness of the rear floor longitudinal member 6 near the front rear floor cross member in the X, Y, and Z directions, and inhibit the torsional deformation and bending deformation of the vehicle body.

[0043] In a possible embodiment, the reinforcing member 5 is a triangular reinforcing structure. The upper surface of the first side of the reinforcing member 5 is connected to the front rear floor cross member, the lower surface of the first side of the reinforcing member 5 is connected to the battery pack mounting bracket 3, the second side of the reinforcing member 5 is connected to the rear floor longitudinal member 6, the third side of the reinforcing member 5 extends from the front rear floor cross member 4 to the rear floor longitudinal member 6, and both ends of the third side of the reinforcing member 5 are respectively connected to the front rear floor cross member 4 and the rear floor longitudinal member 6.

[0044] Figure 3 It is a structural diagram of a perspective of the reinforcing member provided by the embodiment of the present application. Figure 4 It is a structural diagram of another perspective of the reinforcing member provided by the embodiment of the present application. Refer to Figure 3 and Figure 4 , specifically, the reinforcing member 5 is generally set as a triangular structure. Due to the stability of the triangle, its first side and second side, that is, the two right-angled sides, are respectively fixedly connected to the front rear floor cross member 4 and the rear floor longitudinal member 6 in the rear floor skeleton. The third side, that is, the hypotenuse, plays a supporting role between the cross member and the longitudinal member, improving the connection strength and inhibiting the torsional deformation and bending deformation of the rear floor skeleton. At the same time, the third side of the reinforcing member 5 extends outward along the hypotenuse direction and bends downward to form a first strengthening surface 501. The second strengthening surface 504 and the connecting flange 52 form an "L" shape relative to the main body of the reinforcing member 5, further improving the structural strength of the reinforcing member 5.

[0045] Referring to Figure 3 , in the above embodiment, the XY plane is a plane formed by the front - rear direction and the left - right direction of the vehicle. For example, the upper surface and the lower surface of the battery pack housing are located in the XY plane, and the plane formed by the front cross - beam 4 of the rear floor and the longitudinal beam 6 of the rear floor is located in the XY plane. The reinforcement member 5 can be a cold - stamped part or other high - strength and high - stiffness materials. It is arranged at the bottom of the vehicle, and the main body of the reinforcement member 5 is located in the XY plane of the vehicle. Due to engineering errors, there may be a certain angular difference in the above - mentioned XY plane, which does not affect the implementation of this solution.

[0046] Specifically, one side of the reinforcement member 5 adjacent to the longitudinal beam 6 of the rear floor is bent downward to form a second reinforcement surface 504, and is bent along the second reinforcement surface 504 towards the longitudinal beam to form a connecting flange 52, and is fixedly connected to the longitudinal beam 6 of the rear floor through the connecting flange 52. The second reinforcement surface 504 extends along the Z - direction, for example, and extends towards the longitudinal beam 6 of the rear floor to form a connecting flange 52. Towards the longitudinal beam 6, it can extend along the Y - direction towards the outside of the vehicle or towards the inside of the vehicle.

[0047] In a possible implementation manner, the reinforcement member 5 extends along the X - direction towards the front cross - beam 4 of the rear floor to form a first side 51 connected to the front cross - beam 4 of the rear floor.

[0048] Referring to Figure 2 、 Figure 3 , specifically, the main body of the reinforcement member 5 extends towards the front cross - beam 4 of the rear floor to form a first side 51. The first side 51 is fixedly connected to the front cross - beam 4 of the rear floor, and the surfaces of the first side 51 and the front cross - beam 4 of the rear floor are adapted to each other. That is, the specific structure of the front cross - beam 4 of the rear floor may vary according to the connection relationship with surrounding parts. When the front cross - beam 4 of the rear floor needs to provide connection points for other parts, the first side 51 needs to adaptively avoid the connection positions of these parts to form a special - shaped avoidance area. For example, when the front cross - beam 4 of the rear floor needs to provide installation points for other components, the installation point positions may be set at the connection position of the first side 51 and the front cross - beam 4 of the rear floor. Therefore, a special - shaped avoidance area needs to be formed on the first side 51 to provide sufficient installation space for the installation points. When there are protrusions or depressions on the connection surface between the front cross - beam 4 of the rear floor and the longitudinal beam 6 of the rear floor relative to the cross - beam, the first side 51 can be provided with corresponding bosses to make the lapping surfaces of the two match.

[0049] In a possible implementation manner, the two ends of the first reinforcement surface 501 are bent to be provided with a first lapping surface 53 and a second lapping surface 54, and the first lapping surface 53 and the second lapping surface 54 are respectively connected to the longitudinal beam 6 of the rear floor and the front cross - beam 4 of the rear floor.

[0050] Combined with Figure 2 and Figure 3, specifically, the first reinforcing surface 501 is bent near both ends of the front rear floor cross member 4 and the longitudinal rear floor member 6 to form a first overlapping surface 53 and a second overlapping surface 54. To facilitate the fixed connection with the front rear floor cross member 4 and the longitudinal rear floor member 6, the first overlapping surface 53 and the second overlapping surface 54 preferably extend towards the outside of the reinforcing member 5. That is to say, the first overlapping surface 53 on one side of the longitudinal rear floor member 6 can extend towards the rear of the vehicle in the X direction and is fixedly connected to the inner surface of the longitudinal rear floor member 6 in the Y direction at the same time. The second overlapping surface 54 on one side of the front rear floor cross member 4 can extend towards the inside of the vehicle in the Y direction and is fixedly connected to the inner surface of the front rear floor cross member 4 in the X direction at the same time. The inner surface in the Y direction and the inner surface in the X direction are the directions towards the inside along the surrounding frame structure of the rear floor skeleton.

[0051] In some embodiments, when the connection methods or connection processes of the first overlapping surface 53 and the second overlapping surface 54 can meet the requirements for fixedly connecting with the front rear floor cross member 4 and the longitudinal rear floor member 6, the first overlapping surface 53 and the second overlapping surface 54 can also extend in opposite directions.

[0052] In a possible embodiment, part of the battery pack mounting bracket 3 is connected to the first side 51, and the other part is connected to the front rear floor cross member 4.

[0053] Combined Figure 2 and Figure 3 , specifically, the battery pack mounting bracket 3 is respectively connected to the front rear floor cross member 4 and the reinforcing member 5. Since the reinforcing member 5 is fixedly connected to the front rear floor cross member 4 through the first side 51, and the first side 51 is not completely covered along the X direction on the bottom surface of the front rear floor cross member 4, so that the fixed connection position of the battery pack mounting bracket 3 is partially connected to the front rear floor cross member 4 and partially connected to the reinforcing member 5, specifically the upper surface of the first side 51 of the reinforcing member 5. Through this connection method, the battery pack mounting bracket 3 further strengthens the connection strength between the front rear floor cross member 4 and the reinforcing member 5.

[0054] The battery pack 1 is connected to the battery pack mounting bracket 3 through the battery pack mounting bolts 2, so that these components such as the battery pack 1, the battery pack mounting bracket 3, the front rear floor cross member 4, the reinforcing member 5 and the longitudinal rear floor member 6 are connected to form an integral structure, which can significantly improve the torsional stiffness and bending stiffness of the vehicle body.

[0055] In a possible embodiment, the reinforcing member 5 is provided with a welding through hole 503, and an annular reinforcing rib 502 is provided at the edge of the welding through hole 503.

[0056] Specifically, the connection mode between the reinforcing member 5 and the front cross member 4 of the rear floor and the longitudinal beam 6 of the rear floor is preferably welding. To facilitate the welding gun to work on the welding surface, welding through-holes 503 are provided on the surface of the reinforcing member 5, which is also beneficial to reducing the weight of the reinforcing member 5 and meeting the lightweight requirements of the vehicle. When the welding through-holes 503 are opened, to ensure that the overall strength of the reinforcing member 5 is not affected, a ring-shaped reinforcing rib 502 is arranged along the circumferential direction of the inner edge of the opening at the opening edge of the welding through-hole 503 to ensure the overall strength of the reinforcing member 5.

[0057] In a possible implementation manner, the rear floor skeleton further includes a rear suspension trailing arm 8, and the rear suspension trailing arm 8 is fixedly installed on the longitudinal beam 6 of the rear floor.

[0058] Specifically, in this embodiment, the longitudinal beam 6 of the rear floor provides an installation position for the rear suspension trailing arm 8, which is convenient for the overall layout of the rear suspension.

[0059] In a possible implementation manner, a bushing is provided at the connection end of the rear suspension trailing arm 8 and the longitudinal beam 6 of the rear floor, and the bushing is fixedly connected to the longitudinal beam 6 of the rear floor through mounting bolts 7.

[0060] A bushing is provided at the connection end of the rear suspension trailing arm 8 and the longitudinal beam 6 of the rear floor. A connecting member is provided inside the bushing. The connecting member is rotatably connected to the bushing, and the connecting member extends to both sides of the bushing. Symmetrically arranged threaded holes are formed on the extending sections on both sides of the connecting member. The rear suspension trailing arm 8 is fixedly connected to the longitudinal beam 6 of the rear floor through the mounting bolts 7 passing through the threaded holes. The deformation of the area of the mounting bolts 7 for the rear suspension trailing arm 8 on the longitudinal beam 6 of the rear floor is suppressed, thereby improving the handling performance of the vehicle and suppressing the generation and transmission of road noise.

[0061] The embodiment of the present application also provides a vehicle provided with the rear floor skeleton of the above embodiment.

[0062] Among them, the rear floor skeleton and working principle of the vehicle have been described in detail in the above embodiment, and will not be elaborated here one by one.

[0063] Those skilled in the art will easily think of other implementation schemes of the present application after considering the specification and practicing the application disclosed herein.

[0064] The present application aims to cover any variations, uses or adaptations of the present application. These variations, uses or adaptations follow the general principles of the present application and include common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the claims.

[0065] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A rear floor skeleton, characterized in that, Including: The front cross member of the rear floor; Two longitudinal beams of the rear floor, and the two longitudinal beams of the rear floor are respectively connected to two ends of the front cross member of the rear floor; The battery pack mounting bracket, and the battery pack mounting bracket is connected to the front cross member of the rear floor; The reinforcing member, and the reinforcing member is connected between the front cross member of the rear floor and the longitudinal beam of the rear floor, and the reinforcing member is connected to the battery pack mounting bracket.

2. The rear floor skeleton according to claim 1, characterized in that, The reinforcing member is a triangular reinforcing structure. The upper surface of the first side of the reinforcing member is connected to the front cross member of the rear floor, the lower surface of the first side of the reinforcing member is connected to the battery pack mounting bracket, the second side of the reinforcing member is connected to the longitudinal beam of the rear floor, the third side of the reinforcing member extends from the front cross member of the rear floor to the longitudinal beam of the rear floor, and both ends of the third side of the reinforcing member are respectively connected to the front cross member of the rear floor and the longitudinal beam of the rear floor.

3. The rear floor skeleton according to claim 2, characterized in that, The third side of the reinforcing member is bent to form a first reinforcing surface, and both ends of the first reinforcing surface are bent to form a first lapping surface and a second lapping surface, and the first lapping surface and the second lapping surface are respectively connected to the front cross member of the rear floor and the longitudinal beam of the rear floor.

4. The rear floor skeleton according to claim 2, characterized in that, The second side of the reinforcing member is bent to form a second reinforcing surface and a connecting flange, and the second reinforcing surface and the connecting flange form an included angle, and the connecting flange is connected to the longitudinal beam of the rear floor.

5. The rear floor skeleton according to claim 4, characterized in that, The second reinforcing surface and the connecting flange are perpendicular to each other.

6. The rear floor skeleton according to claim 2, wherein Part of the battery pack mounting bracket is connected to the first side, and the other part is connected to the front cross member of the rear floor.

7. The rear floor skeleton according to any one of claims 1-6, characterized in that The reinforcing member is provided with welding through holes, and annular reinforcing ribs are arranged at the edges of the welding through holes.

8. The rear floor skeleton according to any one of claims 1-6, characterized in that, It further includes a rear suspension trailing arm, and the rear suspension trailing arm is fixedly installed on the longitudinal beam of the rear floor.

9. The rear floor skeleton according to claim 8, wherein, One end of the rear suspension trailing arm connected to the longitudinal beam of the rear floor is provided with a bushing, and the bushing is fixedly connected to the longitudinal beam of the rear floor through mounting bolts.

10. A vehicle, characterized in that, There is provided a rear floor skeleton according to any one of claims 1-9.

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