A bracket assembly and an automobile

Abstract

The bracket assembly and automobile of this application belong to the field of automotive technology. The bracket assembly includes a support plate and a support frame. The support frame has a support body and a hollow area. The support body spans across both ends of the support plate along its length. The hollow area and the support body are arranged along the width of the support plate. The support frame is fixed to the support plate. The elastic modulus of the material of the support frame is greater than that of the material of the support plate, and the density of the material of the support plate is less than that of the material of the support frame. The bracket assembly and automobile of this application, on the one hand, can reduce the probability of vibration and abnormal noise of the rear shelf during vehicle operation, and the rear shelf, supported by the bracket assembly, can bear a larger weight to better realize the storage function of the rear shelf. On the other hand, the bracket assembly composed of the support plate and the support frame has a lighter structural weight, which can reduce the overall vehicle weight.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more particularly to a bracket assembly and an automobile. Background Technology

[0002] As automobiles bring convenience to people's lives, people's demands for a quiet riding environment are constantly increasing. A relatively quiet riding environment helps improve the user's experience. However, some cars produce significant abnormal noises while driving, resulting in a poor user experience. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide a bracket assembly and an automobile to reduce abnormal noises in the automobile.

[0004] To achieve the above objectives, embodiments of this application provide a bracket assembly for supporting the rear cargo shelf of a vehicle, comprising:

[0005] Support plate;

[0006] A support frame has a support body and a hollow area. The support body spans across both ends of the support plate along the length direction of the support plate. The hollow area and the support body are arranged along the width direction of the support plate. The support frame is fixed to the support plate. The elastic modulus of the material of the support frame is greater than that of the material of the support plate, and the density of the material of the support plate is less than that of the material of the support frame.

[0007] In some embodiments, the support plate is made of plastic, and / or the support frame is made of metal.

[0008] In some embodiments, the support frame includes a main beam and side beams, the extension direction of the side beams intersects with the extension direction of the main beam, and the side beams are spaced apart on the main beam along the extension direction of the main beam, and the support body is formed on the main beam.

[0009] In some embodiments, the main beam has a cavity, the cavity extending along the extension direction of the main beam.

[0010] In some embodiments, the main beam includes:

[0011] Beam structure;

[0012] A transition piece is connected to the beam, and the transition piece is provided at both ends of the beam. The cavity spans the beam and the transition piece.

[0013] The mounting component is connected to the end of the corresponding transition component that is away from the beam. Each end of the transition component is provided with the mounting component. The mounting component is connected to the support plate. The support body spans the beam, the transition component and the mounting component.

[0014] In some embodiments, the beam, the transition member, and the mounting member are integrally formed, the inner wall surface of the mounting member is annular, and the inner wall surface of the mounting member is fitted along a first direction, which is arranged to intersect with the extension direction of the beam.

[0015] In some embodiments, the main beam is located between the support plate and the side support beam, the side support beam has a first mounting groove, the opening of the first mounting groove faces the support plate, the first mounting groove extends through the side support beam along the extension direction of the main beam, and the main beam is located within the first mounting groove.

[0016] In some embodiments, one end of the side support beam is a first end, and the other end of the side support beam is a second end. The distance between the first end and the first mounting groove is greater than the distance between the second end and the second mounting groove. The direction in which the side support beam spans the main beam is a second direction. On each side of the main beam along the second direction, the first end and the second end are arranged alternately.

[0017] In some embodiments, the side support beam is a plate, and the side edge of the side support beam is folded away from the support plate to form a flange.

[0018] Another aspect of this application provides a vehicle, including:

[0019] Body;

[0020] The bracket assembly described in the foregoing embodiments is connected to the vehicle body;

[0021] A rear shelf, which is mounted on the bracket assembly.

[0022] The bracket assembly and automobile of this application embodiment include a support plate and a support frame. The support frame is fixed to the support plate. The elastic modulus of the material of the support frame is greater than that of the material of the support plate, and the density of the material of the support plate is less than that of the material of the support frame. On the one hand, the support frame material has a larger elastic modulus, and the support frame has stronger rigidity and greater hardness than the support plate. The support frame is fixed to the support plate to enhance the rigidity of the support plate. The rear shelf is stably connected to the vehicle body through the bracket assembly. The bracket assembly has high rigidity and is not easily deformed, which can better support the rear shelf and reduce the probability of vibration and abnormal noise of the rear shelf during vehicle operation. Moreover, the rear shelf, supported by the bracket assembly, can bear a large weight to better realize the storage function of the rear shelf and improve the user experience. On the other hand, the high-rigidity support frame mainly supports the support plate and reduces deformation. The main body of the bracket assembly is the support plate, and the density of the support plate material is lower than that of the support frame material, which helps to reduce the weight of the support plate and thus reduce the overall weight of the bracket assembly. The bracket assembly composed of the support plate and the support frame has a lighter structural weight, which can reduce the weight of the whole vehicle. The bracket assembly of the embodiment of this application can not only reduce weight to achieve lightweighting, but also has high rigidity to provide better support for the rear shelf and reduce the vibration and abnormal noise of the rear shelf during vehicle operation. Furthermore, since the support body spans both ends of the support plate along the length direction of the support plate, and the hollow area and the support body are arranged along the width direction of the support plate, the support body is not interrupted by the hollow area in the length direction of the support plate. The support body, which extends continuously along the length direction of the support plate and spans both ends of the support plate, makes the resistance to bending deformation at both ends of the support plate in the vertical direction greater, and the bracket assembly is less prone to deformation, which helps to improve the rigidity of the bracket assembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the support assembly provided in the embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the supporting skeleton provided in an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the support plate provided in an embodiment of this application;

[0026] Figure 4 This is a structural schematic diagram of the bracket assembly and rear shelf assembly provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the bracket assembly and its assembly with the vehicle body provided in the embodiments of this application.

[0028] Explanation of reference numerals in the attached figures

[0029] 100-Bracket assembly; 11-Support plate; 111-First protrusion; 112-Second protrusion; 113-First mounting part; 11a-Second mounting groove; 12-Support frame; 121-Main beam; 1211-Beam body; 1212-Transition piece; 1213-Mounting piece; 122-Side support beam; 122a-First mounting groove; 1221-First end; 1222-Second end; 123-Support body; 124-Hollowed-out area; 200-Rear shelf; 300-Body body. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0031] In the description of this application, the orientation or positional relationship of "vehicle height direction", "vehicle length direction", and "vehicle width direction" is based on the appendix. Figures 1-5 The orientations or positional relationships shown are intended only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] As part of the inventive concept of this application, before describing the embodiments of this application, it is necessary to analyze the reasons for the large abnormal noise of the car during driving, and to derive the technical solution of the embodiments of this application through reasonable analysis.

[0033] In related technologies, for the purpose of reducing the weight of the whole vehicle, some new models have eliminated the sheet metal structure used to support the rear shelf to reduce the weight of the whole vehicle. This results in the interior shelf having no support and sufficient mounting points, and the rear shelf having insufficient rigidity and strength to bear heavy objects, which can cause vibration and abnormal noise during vehicle operation.

[0034] See Figure 1 and Figure 4 In one aspect, this application provides a bracket assembly 100 for supporting the rear shelf 200 of a vehicle, thereby enhancing the rigidity of the rear shelf 200 and solving the problem of abnormal noise from the rear shelf 200.

[0035] See Figure 1 and Figure 5 In another aspect, this application provides an automobile, which includes a body 300, a rear shelf 200, and a bracket assembly 100 as described in any embodiment of this application. The bracket assembly 100 is connected to the body 300, and the rear shelf 200 is mounted on the bracket assembly 100.

[0036] The bracket assembly 100 includes a support plate 11 and a support frame 12. The bracket assembly 100 can be connected to the vehicle body 300 via the support plate 11 and / or the support frame 12. The support frame 12 has a support body 123 and a hollow area 124. The support body 123 spans across both ends of the support plate 11 along its length. The hollow area 124 and the support body 123 are arranged along the width of the support plate 11. The support frame 12 is fixed to the support plate 11. The elastic modulus of the material of the support frame 12 is greater than that of the material of the support plate 11. That is, the support frame 12 has stronger rigidity and greater hardness than the support plate 11. The support frame 12 is fixed to the support plate 11 to enhance the rigidity of the support plate 11. The support plate 11 is used to connect to and support the rear shelf 200. In this way, the rear shelf 200 is connected to the vehicle body 300 through the bracket assembly 100, which reduces the probability of the rear shelf 200 vibrating or making abnormal noises during vehicle operation. Furthermore, the rear shelf 200 is supported by the bracket assembly 100 and can bear a large weight, so as to better realize the storage function of the rear shelf 200 and improve the user experience.

[0037] It is understandable that, since the support body 123 spans across both ends of the support plate 11 along its length, and the hollow area 124 and the support body 123 are arranged along the width of the support plate 11, the support body 123 is not interrupted by the hollow area 124 along the length of the support plate 11. The support body 123, which extends continuously along the length of the support plate 11 and spans across both ends of the support plate 11, makes the resistance to bending deformation at both ends of the support plate 11 in the vertical direction greater, and the bracket assembly is less prone to deformation, thereby improving the rigidity of the bracket assembly.

[0038] It is understandable that the support frame 12 is a frame structure formed by several beams and rods that are connected to each other, which can bear and transmit the force of the plate more evenly, and the support frame 12 of the same material has a lighter structural weight than the plate structure of the same material.

[0039] The density of the material of the support plate 11 is less than that of the material of the support frame 12. The high-rigidity support frame 12 mainly supports the support plate 11 and reduces deformation. The main body of the bracket assembly 100 is the support plate 11. The lower density of the material of the support plate 11 compared to the support frame 12 helps to reduce the weight of the support plate 11, thereby reducing the overall weight of the bracket assembly 100. The bracket assembly 100, composed of the support plate 11 and the support frame 12, has a lighter structural weight, which can reduce the overall weight of the vehicle.

[0040] In addition, the support plate 11 is a plate structure. The support plate 11 is connected to the rear shelf 200, which can increase the contact area with the rear shelf 200 to achieve better support.

[0041] It should be noted that, see Figures 1-5 The car has three orientations: length, width, and height. The bracket assembly 100 is installed inside the body 300, so the overall orientation of the bracket assembly 100 is the same as that of the car.

[0042] Please see Figure 1 The length direction of the support plate 11 is arranged along the width direction of the vehicle, and the width direction of the support plate 11 is arranged along the length direction of the vehicle.

[0043] It is understood that the support frame 12 can be fixed to the upper or lower side of the support plate 11 along the height direction of the vehicle, and the rear shelf 200 is placed on the same side of the support frame 12 and connected to the support plate 11. Thus, the rear shelf 200 serves to conceal the support frame 12 and the support plate 11, which helps to improve the aesthetics of the product. See the illustrated embodiment of this application. Figure 1 and Figure 2 The support frame 12 and the rear shelf 200 are both located on the upper side of the support plate 11.

[0044] The specific material of the support plate 11 is not limited. In some embodiments, the support plate 11 is made of a lightweight material, such as plastic or rubber. In this way, the support plate 11 has a lighter weight and can reduce the overall weight of the vehicle.

[0045] Specifically, the support plate 11 is made of plastic, which has good rigidity and elasticity, enabling the support plate 11 to withstand large forces. Furthermore, it has low production costs and is easy to process and manufacture.

[0046] The specific material of the support frame 12 is not limited, but the material of the support frame 12 needs to have a large elastic modulus to enhance the rigidity and load-bearing capacity of the support plate 11. In some embodiments, the material of the support frame 12 is metal, such as alloy, iron, aluminum, etc. The support frame 12 has high rigidity and high hardness, and can bear a large weight.

[0047] The density of plastic is less than that of metal.

[0048] See Figure 1 and Figure 2 In some embodiments, the support frame 12 includes a main beam 121 and side support beams 122. The extension directions of the side support beams 122 intersect the extension directions of the main beam 121, and the side support beams 122 are spaced apart on the main beam 121 along the extension direction of the main beam 121. The main support body 123 is formed on the main beam 121. In this way, the main beam 121 and the side support beams 122 can support the support plate 11 in two intersecting directions to evenly bear and transmit the force on the support plate 11.

[0049] The specific form in which the side support beam 122 intersects with the extension direction of the main beam 121 is not limited. In some embodiments, the side support beam 122 and the main beam 121 are arranged perpendicularly. Specifically, the extension direction of the main beam 121 is consistent with the width direction of the vehicle, and the main beam 121 is used to connect the two sides of the vehicle body 300 along the width direction. The extension direction of the side support beam 122 is consistent with the length direction of the vehicle, and at least one end of the side support beam 122 along the extension direction is connected to the vehicle body 300. In this way, the main beam 121 and the side support beam 122 can achieve a stable connection between the bracket assembly 100 and the vehicle body 300. The rear shelf 200 is provided on the bracket assembly 100, which can reduce the probability of the rear shelf 200 vibrating and making abnormal noises during vehicle operation.

[0050] The specific design of the side support beam 122 is not limited. See some embodiments for details. Figure 1 and Figure 2 The side support beam 122 is a plate with flanges on both sides perpendicular to its extension direction. On the one hand, the plate allows the side support beam 122 to be closely connected to the support plate 11 with a larger contact area, and the flanges can enhance the structural strength of the side support beam 122 to bear greater forces. On the other hand, the plate and flanges form a groove, which helps to reduce the structural weight of the side support beam 122, thereby reducing the overall weight of the vehicle.

[0051] The specific design of main beam 121 is not limited. See [link / reference] Figure 1 and Figure 2 In some embodiments, the main beam 121 has a cavity, the cavity extending along the extension direction of the main beam 121, so that the main beam 121 can have a lighter self-weight and further reduce the overall weight of the vehicle.

[0052] See Figure 1 and Figure 2 In some embodiments, the main beam 121 includes a beam body 1211, a transition member 1212, and a mounting member 1213. The transition member 1212 is connected to the beam body 1211, and a transition member 1212 is provided at both ends of the beam body 1211. A cavity spans between the beam and the transition member 1212. The mounting member 1213 is connected to the end of the corresponding transition member 1212 opposite to the beam body 1211. Each end of the transition member 1212 is provided with a corresponding mounting member 1213. The mounting member 1213 is connected to the support plate 11. The support body 123 spans across the beam body 1211, the transition member 1212, and the mounting member 1213. In this structural form, the load is mainly borne by the beam body and the side support beams. The shape of the mounting member can be different from the shape of the beam body so that the shape of the mounting member can be adapted to the shape of the support plate. The transition member is connected to both the beam body and the mounting member to facilitate transition between beam bodies and mounting members with different shapes.

[0053] In one embodiment, the mounting component 1213 can cooperate with the support plate 11 to connect the vehicle body 300.

[0054] Understandably, the beam 1211 has a cavity inside to reduce its weight.

[0055] The cross-section of the beam 1211 perpendicular to the extension direction of the main beam 121 may be, for example, a hollow circle. In embodiments where the cross-section of the beam 1211 perpendicular to the extension direction of the main beam 121 is a hollow circle, the contact surface between the beam 1211 and the support plate 11 is small, making it inconvenient to install and fix it to achieve a stable connection. Therefore, mounting members 1213 need to be provided at both ends of the beam 1211 to achieve a stable connection between the main beam 121 and the support plate 11.

[0056] The shape of the cross-section of the beam 1211 perpendicular to the extension direction of the main beam 121 is not limited. In one embodiment, the cross-section of the beam 1211 perpendicular to the extension direction of the main beam 121 may take the form of, for example, a hollow polygon.

[0057] The specific connection method among mounting component 1213, support plate 11, and vehicle body 300 is not limited, and may include bonding, welding, threaded connection, etc. See some embodiments. Figures 1-5 The mounting part 1213 is provided with mounting holes, and the support plate 11 is also provided with mounting holes corresponding to the mounting part 1213. The mounting part 1213 and the support plate 11 cooperate with each other and are threadedly connected to the vehicle body 300 through the mounting holes.

[0058] The specific design of the mounting component 1213 is not limited. In an embodiment where the cross-section of the beam 1211 perpendicular to the extension direction of the main beam 121 is a hollow circle, see [reference needed]. Figure 1 and Figure 2 The mounting component 1213 has a plate-like structure, which increases the contact area between the mounting component 1213 and the support plate 11, allowing the mounting component 1213 to fit snugly against the support plate 11 for better fixation. Furthermore, the specific form of the mounting component 1213 is not limited; it can be welded to the beam 1211, or it can be formed by pressing the two ends of the beam 1211 in its extension direction.

[0059] Furthermore, since the beam 1211 has a cavity and the mounting component 1213 has a plate-like structure, the beam 1211 and the mounting component 1213 need to be connected by a transition component 1212. The transition component 1212 has a cavity that gradually narrows and closes towards the end near the mounting component 1213, and the cavity in the transition component 1212 is open towards the end near the beam 1211 and can communicate with the beam 1211. In this way, the transition component 1212 can achieve a stable connection with the beam 1211 and the mounting component 1213.

[0060] The specific connection method for beam 1211, transition piece 1212, and mounting piece 1213 is not limited, and can include welding, hinged joints, integral molding, etc. See also Figure 1 and Figure 2 In some embodiments, the beam 1211, transition piece 1212, and mounting piece 1213 are integrally formed. The inner wall surface of the mounting piece 1213 is annular and fits along a first direction, which intersects with the extension direction of the beam 1211. The integral formation of the beam 1211, transition piece 1212, and mounting piece 1213 facilitates the manufacturing of the main beam 121, and ensures a stable connection between them, enabling them to withstand greater forces. The fitted inner wall surface of the mounting piece 1213 and its generally flat shape facilitates its better adaptation to the shape of the support plate 11 for installation.

[0061] Understandably, the two ends of the beam 1211 with a cavity are fitted together along the first direction to form a mounting member 1213. In this way, the mounting member 1213 can fit together with the support plate 11 along the first direction, increasing the contact area between the mounting member 1213 and the support plate 11, and better achieving a fixed connection between the main beam 121 and the support plate 11. A transition member 1212 with a cavity that gradually narrows and closes towards the end near the mounting member 1213 is formed between the mounting member 1213 and the beam 1211 by pressing.

[0062] It is understood that the mounting member 1213 can be bent relative to the transition member 1212 and the bent beam, and the mounting member 1213 can also be in the same extending direction as the transition member 1212 and the bent beam. See the illustrated embodiment of this application. Figure 1 and Figure 2 The beam 1211, transition piece 1212, and mounting piece 1213 are located in the same extending direction, with the first direction perpendicular to the extending direction of the beam 1211. When the bracket assembly 100 is installed inside the vehicle body 300, the first direction is the height direction of the vehicle, and the extending direction of the beam 1211 is the width direction of the vehicle.

[0063] See Figure 1 and Figure 2In some embodiments, the main beam 121 is located between the support plate 11 and the side support beam 122. The main beam 121 has a certain thickness, that is, when the main beam 121 is connected to the support plate 11, there is a certain gap between the top of the side surface of the main beam 121 facing away from the support plate 11 and the support plate 11. Therefore, the side support beam 122 has a first mounting groove 122a. The opening of the first mounting groove 122a faces the support plate 11. The first mounting groove 122a extends through the side support beam 122 along the extension direction of the main beam 121. The main beam 121 is located in the first mounting groove 122a. In this way, the inner wall of the first mounting groove 122a can fit with the side surface of the main beam 121 facing away from the support plate 11, and the side support beam 122 can fit with the support plate 11 to enhance the stability of the connection between the side support beam 122 and the support plate 11.

[0064] See Figure 1 and Figure 2 In some embodiments, one end of the side support beam 122 is a first end 1221, and the other end of the side support beam 122 is a second end 1222. The distance between the first end 1221 and the first mounting groove 122a is greater than the distance between the second end 1222 and the second mounting groove 11a. The direction in which the side support beam 122 spans the main beam 121 is the second direction. On each side of the main beam 121 along the second direction, the first end 1221 and the second end 1222 are alternately arranged. In this way, the side support beam 122 can bear the force of the support plate 11 on both sides of the main beam 121 along the second direction, and the structure is simple, which is conducive to reducing costs.

[0065] See Figure 1 and Figure 2 In some embodiments, both the first end 1221 and the second end 1222 can be used to connect the support plate 11, and the first end 1221 can also be connected to the vehicle body 300 along with the support plate 11.

[0066] The specific connection method between the first installation section and the support plate 11 is not limited, such as bonding, welding, threaded connection, etc.

[0067] See Figure 1 and Figure 3 In some embodiments, the support plate 11 is provided with an upwardly extending first mounting portion 113 on the rear side perpendicular to the extension direction of the main beam 121. The first mounting portion 113 is connected to the second end 1222 of the side support beam 122 located on the rear side perpendicular to the extension direction of the main beam 121, and together they are used to connect to the body of the vehicle.

[0068] See Figure 1 and Figure 3In some embodiments, a second mounting groove 11a is formed on the upper surface of the support plate 11, and the lower surface of the main beam 121 is partially embedded in the second mounting groove 11a to reduce the size of the main beam 121 protruding from the support plate 11, thereby reducing the gap between the rear shelf 200 and the support plate 11 and reducing the spatial interference of the support frame 12 on the installation of the shelf and the support plate 11.

[0069] In some embodiments, the upper surface of the support plate 11 is further provided with a first protrusion 111, which is connected to a first end 1221 located on the front side perpendicular to the extension direction of the main beam 121, so as to fix the support plate 11 to the side support beam 122.

[0070] The specific connection method between the first protrusion 111 and the first end 1221 is not limited, such as bonding, welding, threaded connection, etc.

[0071] See Figure 1 and Figure 3 In some embodiments, a second protrusion 112 is formed on the upper surface of the support plate 11. The second protrusion 112 is located on the front side of the support plate 11 perpendicular to the extension direction of the main beam 121 and is used to connect the rear shelf 200.

[0072] The specific connection method between the support plate 11 and the rear shelf 200 is not limited, such as welding, bonding, snap-fitting, etc. See some embodiments. Figure 4 The second protrusion 112 engages with the rear shelf 200.

[0073] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bracket assembly for supporting a rear cargo shelf of a vehicle, characterized in that, include: Support plate; A support frame has a support body and a hollow area. The support body spans across both ends of the support plate along the length direction of the support plate. The hollow area and the support body are arranged along the width direction of the support plate. The support frame is fixed to the support plate. The elastic modulus of the material of the support frame is greater than that of the material of the support plate, and the density of the material of the support plate is less than that of the material of the support frame. The support frame includes a main beam and side beams. The extension direction of the side beams intersects with the extension direction of the main beam, and the side beams are spaced apart on the main beam along the extension direction of the main beam. The support body is formed on the main beam. The main beam is located between the support plate and the side support beam. The side support beam has a first mounting groove with the opening of the first mounting groove facing the support plate. The first mounting groove extends through the side support beam along the extension direction of the main beam, and the main beam is located within the first mounting groove. The upper surface of the support plate has a second mounting groove, and the lower surface of the main beam is partially embedded in the second mounting groove.

2. The support assembly according to claim 1, characterized in that, The support plate is made of plastic, and / or the supporting frame is made of metal.

3. The support assembly according to claim 1, characterized in that, The main beam has a cavity, and the cavity extends along the extension direction of the main beam.

4. The support assembly according to claim 3, characterized in that, The main beam includes: Beam structure; A transition piece is connected to the beam, and the transition piece is provided at both ends of the beam. The cavity spans the beam and the transition piece. The mounting component is connected to the end of the corresponding transition component that is away from the beam. Each end of the transition component is provided with the mounting component. The mounting component is connected to the support plate. The support body spans the beam, the transition component and the mounting component.

5. The support assembly according to claim 4, characterized in that, The beam, the transition piece, and the mounting piece are integrally formed. The inner wall of the mounting piece is annular and fits along a first direction, which is intersected with the extension direction of the beam.

6. The support assembly according to claim 1, characterized in that, One end of the side support beam is the first end, and the other end of the side support beam is the second end. The distance between the first end and the first mounting groove is greater than the distance between the second end and the first mounting groove. The direction in which the side support beam spans the main beam is the second direction. On each side of the main beam along the second direction, the first end and the second end are alternately arranged.

7. The support assembly according to claim 2, characterized in that, The side support beam is a plate, and the plate has flanges on both sides perpendicular to its extension direction.

8. A car, characterized in that, include: Body; The bracket assembly according to any one of claims 1 to 7, wherein the bracket assembly is connected to the vehicle body; A rear shelf, which is mounted on the bracket assembly.

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