Vehicle body rear structure assembly and vehicle

Abstract

The invention provides a vehicle body rear structure assembly and a vehicle, and belongs to the technical field of vehicle parts, the vehicle body rear structure assembly comprises a side wall unit, a rear wall unit and a first reinforcing support; wherein the side wall unit is provided with a side wall force transmission cavity, the rear wall unit is provided with a rear wall force transmission cavity, and the side wall force transmission cavity is communicated with the rear wall force transmission cavity to form a rear force transmission channel extending in the circumferential direction of a vehicle body; and the first reinforcing bracket is supported and connected in the rear force transmission channel along the inside and outside direction. The overall deformation resistance of the rear force transmission channel is improved, collision energy is effectively attenuated, and finally the structural strength and torsional rigidity of the vehicle body rear structure assembly are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle components, and in particular relates to a vehicle body rear structure assembly and a vehicle. Background Art

[0002] The rear structure of the vehicle body is an important part of the entire vehicle, which mainly includes the rear side panels, rear panel and rear wheel hub. The structure of this area has an important impact on the structural strength and rigidity of the entire vehicle. In order to achieve the connection between the side panels and the rear panel, a large operating opening is often opened on the rear panel inner panel near the connection seam to ensure that the welding gun can enter the space between the rear panel inner panel and the rear panel outer panel. At the same time, since the connection area between the side panels and the rear panel is a corner structure, and the pillars in this area form an important force transmission path at the rear of the vehicle body, the setting of the operating opening will affect the structural strength and torsional rigidity of this area. In the event of a low-speed collision (a collision with a speed lower than 24km / h), the rear panel is easily damaged, resulting in high repair costs and affecting the user experience. Summary of the Invention

[0003] Embodiments of the present invention provide a vehicle body rear structure assembly and a vehicle, aiming to solve the problem of insufficient structural strength and torsional rigidity of the vehicle body rear structure in existing vehicles.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] In a first aspect, a vehicle body rear structure assembly is provided, comprising:

[0006] A side panel unit having a side panel force transmission cavity;

[0007] a rear enclosure unit having a rear enclosure force transmission cavity, wherein the side enclosure force transmission cavity is connected to the rear enclosure force transmission cavity to form a rear force transmission channel extending along the circumference of the vehicle body; and

[0008] The first reinforcing bracket is supported and connected to the rear force transmission channel along the inward and outward directions.

[0009] In combination with the first aspect, in a possible implementation, the first reinforcing bracket includes a reinforcing plate, the inner side of the reinforcing plate is bent to form an inner flange, and the outer side of the reinforcing plate is bent to form an outer flange, the inner flange is fitly connected to the inner wall of the rear force transmission channel, and the outer flange is fitly connected to the outer wall of the rear force transmission channel, and the bending directions of the inner flange and the outer flange are opposite.

[0010] In combination with the first aspect, in a possible implementation, the top of the first reinforcing bracket is connected to the top wall of the rear force transmission channel, and the bottom of the first reinforcing bracket is connected to the bottom wall of the rear force transmission channel.

[0011] In combination with the first aspect, in one possible implementation, an operating opening is formed on the inner side of the rear enclosure unit, and the operating opening corresponds to the rear enclosure force transmission cavity. The vehicle body rear structure assembly also includes a second reinforcing bracket that is fitfully connected to the inner side of the side enclosure unit and / or the inner side of the rear enclosure unit, and the second reinforcing bracket is arranged across the operating opening.

[0012] In some embodiments, the second reinforcing bracket is an inwardly arched bracket.

[0013] In some embodiments, the first reinforcing bracket is provided corresponding to the operation opening, the inner side of the first reinforcing bracket is connected to the inner wall of the rear force transmission channel, and the outer side of the first reinforcing bracket is connected to the outer wall of the rear force transmission channel;

[0014] The area on the second reinforcing bracket that is in contact with the inner side of the rear enclosure unit is defined as a bracket connecting portion, and the inner side of the first reinforcing bracket is also connected to the bracket connecting portion.

[0015] In some embodiments, a functional device mounting point is formed on the second reinforcing bracket.

[0016] In combination with the first aspect, in a possible implementation, the side panel unit includes a side panel outer panel and a wheel cover structure arranged on the inner side of the side panel outer panel, and the side panel force transmission cavity is formed between the side panel outer panel and the wheel cover structure; the rear panel unit includes a rear panel outer panel and a rear panel inner panel arranged on the inner side of the rear panel outer panel, and the rear panel force transmission cavity is formed between the rear panel outer panel and the rear panel inner panel; the rear panel outer panel is connected to the side panel outer panel, and the rear panel inner panel is connected to the wheel cover structure.

[0017] In some embodiments, a rear inner panel flange extends from the side edge of the rear inner panel, and the rear inner panel flange is fitly connected to the wheel cover structure.

[0018] Compared with the prior art, the solution shown in the embodiment of the present application provides support in the inward and outward directions in the rear force transmission channel by setting a first reinforcing bracket. On the one hand, it can improve the bearing capacity of the rear force transmission channel in the inward and outward directions and enhance the structural strength of the area. On the other hand, the first reinforcing bracket can divide the inner cavity of the rear force transmission channel into multiple cavities distributed along the circumference of the vehicle body. A single smaller cavity has stronger anti-deformation ability, and the first reinforcing bracket can also serve as a force transmission node, thereby improving the overall anti-deformation ability of the rear force transmission channel and effectively attenuating collision energy. Even if an opening is provided on the rear surround unit, it can effectively improve the structural strength and torsional stiffness of the rear structure assembly of the vehicle body.

[0019] In a second aspect, an embodiment of the present invention further provides a vehicle comprising the aforementioned vehicle body rear structure assembly.

[0020] Compared with the prior art, the solution shown in the embodiment of the present application promotes the improvement of the structural strength and torsional stiffness of the entire vehicle by adopting the above-mentioned rear vehicle body structure assembly with better structural strength and torsional stiffness, thereby reducing the degree of deformation of the vehicle body when a collision occurs, which not only reduces maintenance costs but also improves driving safety. In addition, compared with the traditional rear structure, the added component of the rear vehicle body structure assembly of the present application is mainly the first reinforcing bracket. However, since the first reinforcing bracket is arranged in the rear force transmission channel, the overall volume is relatively small, and the impact on the weight of the vehicle body and the impact on energy consumption are also very small. It can achieve effective reinforcement of the rear vehicle body structure at a lower cost and weight, thereby improving the overall low-speed collision performance of the vehicle. At the same time, the cost of the entire vehicle is also relatively low, and it has stronger market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the vehicle body rear structure assembly provided in Example 1 of the present invention;

[0022] Figure 2 This is an example diagram of the force transmission path of the vehicle body rear structure assembly provided in the first embodiment of the present invention;

[0023] Figure 3 A top cross-sectional view of the vehicle body rear structure assembly provided in Example 1 of the present invention;

[0024] Figure 4 This is a front view of the assembly of the rear enclosure unit and the second reinforcement bracket used in the first embodiment of the present invention;

[0025] Figure 5 for Figure 4 Front view of the assembly of the center rear outer panel and the first reinforcement bracket;

[0026] Figure 6 A perspective view of a first reinforcing bracket used in the first embodiment of the present invention;

[0027] Figure 7 A perspective view of the second reinforcing bracket used in the first embodiment of the present invention;

[0028] Figure 8 A top cross-sectional view of the vehicle body rear structure assembly provided in the second embodiment of the present invention;

[0029] Figure 9 A top cross-sectional view of the vehicle body rear structure assembly provided in Example 3 of the present invention;

[0030] Description of reference numerals:

[0031] 1. Side panel unit; 101. Side panel force transmission cavity; 110. Side panel outer panel; 120. Wheel house outer panel; 130. Wheel house inner panel; 140. Pillar inner panel; 150. Side panel water trough; 2. Rear panel unit; 201. Rear panel force transmission cavity; 210. Rear panel outer panel; 220. Rear panel inner panel; 221. Rear panel inner panel flange; 3. Rear force transmission channel; 4. First reinforcing bracket; 410. Reinforcing plate; 411. Weight reduction hole; 412. Reinforcing boss; 420. Inner flange; 421. First connecting hole; 430. Outer flange; 440. Upper flange; 450. Lower flange; 5. Operation opening; 6. Second reinforcing bracket; 610. Bracket connecting part; 611. Second connecting hole. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In the claims, description and drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for the purpose of distinguishing different objects rather than for describing a specific order.

[0034] In the claims, specification, and drawings of the present invention, the terms "up" and "down" are synonymous with the up-down direction of the vehicle body; the terms "front" and "rear" are synonymous with the fore-aft direction of the vehicle body; the terms "left" and "right" are synonymous with the left-right direction of the vehicle body; the term "inner" refers to the direction toward the passenger compartment; the term "outer" refers to the direction away from the passenger compartment; and the term "body circumferential direction" refers to the direction of the outer circumference of the vehicle body in a cross-section perpendicular to the up-down direction. Unless otherwise expressly defined, other directional terms, such as the terms "center," "transverse," "longitudinal," "horizontal," "vertical," "top," "bottom," "clockwise," "counterclockwise," "high," and "low," to indicate directions or positional relationships, are based on the directions and positional relationships shown in the drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of the present invention.

[0035] In the claims, description and above-mentioned drawings of the present invention, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0036] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0037] In the claims, description and the above-mentioned drawings of the present invention, if the term "fit connection" is used, its implementation methods include but are not limited to welding after fitting, connecting through threaded connectors after fitting, etc.

[0038] Please also refer to Figures 1 to 9 The vehicle body rear structure assembly provided by the present invention is now described. The vehicle body rear structure assembly comprises a side panel unit 1, a rear panel unit 2, and a first reinforcement bracket 4. The side panel unit 1 has a side panel force transmission cavity 101, and the rear panel unit 2 has a rear panel force transmission cavity 201. The side panel force transmission cavity 101 and the rear panel force transmission cavity 201 communicate with each other to form a rear force transmission channel 3 extending along the circumference of the vehicle body. The first reinforcement bracket 4 is supported and connected in the inner and outer directions within the rear force transmission channel 3.

[0039] In this embodiment, the side unit 1 includes a side outer panel 110, a wheel house outer panel 120 and a wheel house inner panel 130 connected in sequence from the outside to the inside, the wheel house outer panel 120 and the wheel house inner panel 130 cooperate to form a wheel house structure, the side unit 1 also includes a pillar inner panel 140 and a side water flow channel 150, the pillar inner panel 140 is connected to the rear of the wheel house structure, the side water flow channel 150 is connected to the rear of the side outer panel 110 and the pillar Between the rear parts of the inner panel 140; the rear enclosure unit 2 includes a rear enclosure outer panel 210 and a rear enclosure inner panel 220 arranged in sequence from the outside to the inside, the rear enclosure outer panel 210 is fitted and connected to the side enclosure outer panel 110, the rear enclosure inner panel 220 is overlapped and connected to the rear parts of the wheel house outer panel 120 and the wheel house inner panel 130, the pillar inner panel 140 is connected to the upper part of the rear enclosure inner panel 220, and the side enclosure water channel 150 is also connected to the upper part of the rear enclosure outer panel 210. Based on this setting scheme, the side wall force transmission cavity 101 is mainly formed by the side wall outer panel 110 and the wheel house outer panel 120. The extension direction of the side wall force transmission cavity 101 is the same as the trend of the rear corner area of ​​the vehicle body. The lower part of the side wall outer panel 110 and the lower part of the wheel house outer panel 120 are welded together, and the lower part of the side wall force transmission cavity 101 is closed. In addition, affected by the shape of the wheel house outer panel 120, the inner and outer widths of the lower part of the side wall force transmission cavity 101 gradually decrease from top to bottom; the rear wall force transmission cavity 201 is a cavity structure closed on all sides. It is located below the window frame formed by the rear wall and extends in the left and right directions. The cross-sectional shape of the rear wall force transmission cavity 201 includes but is not limited to a quadrilateral and other shapes. In addition, in this embodiment, the upper wall of the rear wall force transmission cavity 201 gradually tilts downward from the outside to the inside to form a window sill.

[0040] In addition, the rear vehicle body structure assembly shown in this embodiment is a structure in the area where the D-pillar is located. It should be understood that the type of pillar formed by the rear vehicle body structure assembly is related to the specific vehicle model. All vehicle models with similar reinforcement requirements can use this type of structure assembly, and this is not a sole limitation here.

[0041] In this embodiment, the first reinforcement brackets 4 can be installed in the side panel force transmission cavity 101 or the rear panel force transmission cavity 201. Alternatively, the first reinforcement brackets 4 can be installed in both the side panel force transmission cavity 101 and the rear panel force transmission cavity 201. The number and location of the first reinforcement brackets 4 in the entire rear force transmission channel 3 are not limited here and can be selectively installed based on actual performance improvement requirements.

[0042] Compared with the prior art, the rear vehicle body structure assembly provided in this embodiment provides support in the inward and outward directions in the rear force transmission channel 3 by setting a first reinforcing bracket 4. On the one hand, it can improve the load-bearing capacity of the rear force transmission channel 3 in the inward and outward directions and enhance the structural strength of this area. On the other hand, the first reinforcing bracket 4 can divide the inner cavity of the rear force transmission channel 3 into multiple cavities distributed along the circumference of the vehicle body. A single smaller cavity has stronger anti-deformation ability, and the first reinforcing bracket 4 can also serve as a force transmission node, thereby improving the overall anti-deformation ability of the rear force transmission channel 3 and effectively attenuating collision energy. Even if an opening is provided on the rear enclosure unit 2, it can effectively improve the structural strength and torsional stiffness of the rear vehicle body structure assembly.

[0043] In addition, this embodiment connects the side force transmission cavity 101 of the side panel unit 1 with the rear force transmission cavity 201 of the rear panel unit 2 to form an integrated rear force transmission channel 3, ensuring a long, complete force transmission channel at the rear of the vehicle body. In the event of a collision, the long force transmission channel more effectively attenuates external forces. Simultaneously, the complete force transmission path effectively disperses the collision force, preventing excessive force on the rear panel unit 2 or the side panel unit 1. By improving the integrity of the force transmission channel within the rear structural assembly, the load-bearing capacity of the rear structural assembly is enhanced, ultimately improving the structural strength and torsional rigidity of the rear structural assembly.

[0044] In some embodiments of the specific arrangement of the first reinforcement bracket 4, on the extension path of the rear force transmission channel 3 (i.e., in the circumferential direction of the vehicle body), the inner and outer sides of the first reinforcement bracket 4 are staggered (e.g. Figure 3 and Figure 8As shown), this arrangement enables the first reinforcing bracket 4 to not only provide effective support in the inner and outer directions, but also provide relatively reliable support along the extension path of the rear force transmission channel 3, thereby improving the load-bearing capacity and torsional strength of the area where the rear force transmission channel 3 is located in both directions. Of course, along the extension path of the rear force transmission channel 3, the inner and outer sides of the first reinforcing bracket 4 can also be roughly aligned (as shown). Figure 9 shown).

[0045] Similarly, on the extension path of the rear force transmission channel 3 (i.e., in the circumferential direction of the vehicle body), the upper and lower sides of the first reinforcing bracket 4 can be staggered to further increase its load-bearing dimension; of course, the upper and lower sides of the first reinforcing bracket 4 can also be roughly aligned on the extension path of the rear force transmission channel 3, which is not the only limitation here.

[0046] See Figure 3 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 9 In some specific embodiments of the first reinforcing bracket 4, the first reinforcing bracket 4 includes a reinforcing plate 410, the inner side of the reinforcing plate 410 is bent to form an inner flange 420, and the outer side of the reinforcing plate 410 is bent to form an outer flange 430, the inner flange 420 is fitly connected to the inner wall of the rear force transmission channel 3, and the outer flange 430 is fitly connected to the outer wall of the rear force transmission channel 3, and the bending directions of the inner flange 420 and the outer flange 430 are opposite. This embodiment achieves a fitting connection with the side wall of the rear force transmission channel 3 through the inner flange 420 and the outer flange 430, ensuring that there is a sufficient contact area between the first reinforcing bracket 4 and the rear force transmission channel 3, thereby ensuring the reliability of assembly; in addition, the bending directions of the inner flange 420 and the outer flange 430 are opposite, so that the cross-section of the first reinforcing bracket 4 perpendicular to the up and down directions is "Z"-shaped, which has high structural strength and torsional resistance, and is of great significance for further improving the overall structural strength and torsional rigidity of the rear vehicle body structure assembly; and, since the first reinforcing bracket 4 is a bent plate-like component as a whole, the manufacturing process can adopt stamping as an integral part to avoid the generation of seams on the first reinforcing bracket 4, which has an effect of improving the structural strength and rigidity of the first reinforcing bracket 4 itself, and the plate-like component also makes the structure of the first reinforcing bracket 4 itself relatively light and thin, which is more in line with the design requirements of miniaturization and lightweight.

[0047] In some embodiments, the top of the first reinforcing bracket 4 is connected to the top wall of the rear force transmission channel 3, and the bottom of the first reinforcing bracket 4 is connected to the bottom wall of the rear force transmission channel 3. In this embodiment, by designing the top and bottom of the first reinforcing bracket 4 to be connected to the side walls of the rear force transmission channel 3, the connection points and contact area between the first reinforcing bracket 4 and the rear force transmission channel 3 are increased, thereby enhancing the bonding strength between the two, which can promote further improvement of structural strength and torsional rigidity; at the same time, in order to adapt to the connection in the up and down directions and the inside and outside directions, the first reinforcing bracket 4 itself also needs to have a larger area, and the structural strength of the first reinforcing bracket 4 itself is also improved, which also plays a role in assisting in improving the structural strength and torsional rigidity of the entire rear structural assembly.

[0048] Based on the above embodiments, see Figure 5 and Figure 6 The first reinforcing bracket 4 includes a reinforcing plate 410, the inner side of the reinforcing plate 410 is connected to the inner wall of the rear force transmission channel 3, and the outer side is connected to the outer wall of the rear force transmission channel 3; the upper side of the reinforcing plate 410 is bent to form an upper flange 440, and the lower side of the reinforcing plate 410 is bent to form a lower flange 450, the upper flange 440 is fitted and connected to the top wall of the rear force transmission channel 3, and the lower flange 450 is fitted and connected to the bottom wall of the rear force transmission channel 3, and the bending directions of the upper flange 440 and the lower flange 450 are opposite. This embodiment achieves a fitting connection with the side wall of the rear force transmission channel 3 through the upper flange 440 and the lower flange 450, ensuring that there is sufficient contact area between the first reinforcing bracket 4 and the rear force transmission channel 3, thereby ensuring the reliability of assembly; in addition, the bending directions of the upper flange 440 and the lower flange 450 are opposite, so that the cross-section of the first reinforcing bracket 4 parallel to the up and down directions is "Z"-shaped, with high structural strength and torsional resistance, which is of great significance for further improving the overall structural strength and torsional stiffness of the rear vehicle body structure assembly.

[0049] It should be noted that the scheme of setting the inner flange 420 and the outer flange 430 and the scheme of setting the upper flange 440 and the lower flange 450 can be used separately (not shown in the figure) or in combination (such as Figure 5 and Figure 6 shown).

[0050] Based on the above embodiments, see Figure 6Because the first reinforcing bracket 4 inherently has high structural strength, while meeting the reinforcement requirements, a weight-reducing hole 411 can be provided on the reinforcing plate 410 to meet the design requirements for vehicle lightweighting. The shape of the weight-reducing hole 411 can be circular, oblong, square, etc. Furthermore, to enhance the structural strength of the area surrounding the weight-reducing hole 411 and thereby increase the opening area, a reinforcing boss 412 can be formed around the weight-reducing hole 411. The weight-reducing hole 411 is disposed on the reinforcing boss 412, and the boss structure reinforces the area.

[0051] In a specific implementation, the weight-reducing holes 411 provided on the reinforcing boss 412 are defined as the first type of weight-reducing holes 411, and the weight-reducing holes 411 directly provided on the surface of the reinforcing plate 410 are defined as the second type of weight-reducing holes 411. The first type of weight-reducing holes 411 and the second type of weight-reducing holes 411 can be used alone or in combination. The combined use method includes but is not limited to: on a preset path, the first type of weight-reducing holes 411 and the second type of weight-reducing holes 411 are alternately provided (e.g., Figure 6 shown).

[0052] In order to achieve welding operations, it is necessary to extend the welding gun into the side panel force transmission cavity 101 or the rear panel force transmission cavity 201, which requires the provision of some operation openings 5. In some specific configurations of the operation openings 5, the operation openings 5 ​​can be formed separately on the inner side of the rear panel unit 2 (specifically, the rear panel inner plate 220). The operation openings 5 ​​correspond to the rear panel force transmission cavity 201, and the specific number and size of the operation openings 5 ​​are set according to actual welding requirements. Based on this, in order to strengthen the weakened area where the operation openings 5 ​​are provided, the vehicle body rear structure assembly also includes a second reinforcement bracket 6 that is attached to the inner side of the rear panel unit 2. The second reinforcement bracket 6 is arranged across the operation opening 5 and forms a reinforcement support function on at least two opposite sides of the operation opening 5, ultimately achieving the reinforcement of the weakened area. The shape of the second operation opening 5 includes but is not limited to a regular polygon, a circle, an irregular polygon, etc., and is selectively set according to the specific distribution of surrounding parts and the specific operation requirements of welding.

[0053] In this embodiment, the operation opening 5 and the second reinforcement bracket 6 may be arranged in a one-to-one correspondence, or a plurality of second reinforcement brackets 6 may be arranged at one operation opening 5 .

[0054] If a one-to-one corresponding setting method is adopted, the specific implementation method is as follows: 1) The second reinforcing bracket 6 has two oppositely arranged bracket connection parts 610 (i.e., the area on the second reinforcing bracket 6 that is fitted and connected to the inner side of the rear enclosure unit 2), and the second reinforcing bracket 6 spans the opposite sides of the operating opening 5; 2) The second reinforcing bracket 6 has three radially distributed bracket connection parts 610, and the three bracket connection parts 610 are roughly evenly distributed along the circumference of the operating opening 5; 3) The second reinforcing bracket 6 has four cross-shaped bracket connection parts 610, and the four bracket connection parts 610 are roughly evenly distributed along the circumference of the operating opening 5.

[0055] If a one-to-many setting is adopted, the specific implementation method is as follows: 1) Two second reinforcing brackets 6 are set corresponding to the same operating opening 5, and each second reinforcing bracket 6 has two oppositely arranged bracket connecting parts 610. Each second reinforcing bracket 6 spans the opposite sides of the operating opening 5, and the spanning directions are the same. The two second reinforcing brackets 6 are distributed along the first distribution path (i.e., the path perpendicular to the spanning direction of the second reinforcing bracket 6); 2) Two second reinforcing brackets 6 are set corresponding to the same operating opening 5, and each second reinforcing bracket 6 has two oppositely arranged bracket connecting parts 610. Each second reinforcing bracket 6 spans the opposite sides of the operating opening 5, and the spanning directions are perpendicular to each other. The two second reinforcing brackets 6 are stacked along the second distribution path (i.e., the path parallel to the inward and outward directions).

[0056] It should be noted that the operating opening 5 can be formed solely on the inner side of the rear enclosure unit 2, or solely on the inner side of the side enclosure unit 1, or the operating opening 5 can be formed on the inner side of both the side enclosure unit 1 and the inner side of the rear enclosure unit 2, and this is not a sole limitation.

[0057] Based on the above embodiments, see Figure 3 、 Figures 7 to 9 The second reinforcement bracket 6 is an inwardly arched bracket. This arched design provides the second reinforcement bracket 6 with greater structural strength, thereby enhancing the strength and rigidity of the area where the operation opening 5 is located. In practice, to achieve effective reinforcement, the second reinforcement bracket 6 must at least provide left-right support for the operation opening 5 provided on the rear enclosure unit 2. Specifically, the second reinforcement bracket 6 must have at least two bracket connection portions 610 disposed opposite each other along the left-right direction.

[0058] See Figure 4 and Figure 5On the basis of the second reinforcement bracket 6, the first reinforcement bracket 4 is arranged corresponding to the operation opening 5. The inner side of the first reinforcement bracket 4 is connected to the inner wall of the rear force transmission channel 3, and the outer side is connected to the outer wall of the rear force transmission channel 3. The area of ​​the second reinforcement bracket 6 that is in contact with the inner side of the rear enclosure unit 2 is defined as the bracket connection portion 610, and the inner side of the first reinforcement bracket 4 is also connected to the bracket connection portion 610. In this embodiment, the first reinforcement bracket 4 and the second reinforcement bracket 6 are connected, so that the first reinforcement bracket 4, the rear enclosure inner panel 220, and the second reinforcement bracket 6 form an integral structure, thereby enhancing the overall structural strength and torsional rigidity. In addition, the first reinforcement bracket 4 not only supports and strengthens the rear force transmission channel 3, but also strengthens the weakened area where the operation opening 5 is provided, achieving a multi-purpose effect. While achieving the same reinforcement effect, it avoids the need for excessive components, which is beneficial for optimizing production costs and vehicle weight.

[0059] In a specific implementation, under the premise that the operation opening 5 is disposed in the rear inner panel 220, the front side of the first reinforcing bracket 4 is located on the left or right side of the operation opening 5. This requires that the second reinforcing bracket 6 has at least one bracket connecting portion 610 located on the left or right side of the operation opening 5, thereby achieving connection with the first reinforcing bracket 4. This embodiment exemplarily shows that the second reinforcing bracket 6 has two bracket connecting portions 610 distributed in the left and right directions. Depending on the specific configuration of the first reinforcing bracket 4, the front side of the first reinforcing bracket 4 can be selectively connected to one of the bracket connecting portions 610.

[0060] In addition, the connection between the first reinforcing bracket 4 and the second reinforcing bracket 6 includes but is not limited to the following forms: 1) the connection point between the first reinforcing bracket 4 and the rear enclosure unit 2 (specifically the rear enclosure inner panel 220) is defined as the first point, and the connection point between the bracket connecting portion 610 and the rear enclosure unit 2 (specifically the rear enclosure inner panel 220) is defined as the second point. The first point and the second point are staggered, and at the same time, the first reinforcing bracket 4 and the bracket connecting portion 610 are connected within the area covered by the operation opening 5, that is, the third point between the first reinforcing bracket 4 and the bracket connecting portion 610 is located within the operation opening 5. This form is not shown in the figure; 2) the connection point between the first reinforcing bracket 4 and the rear enclosure unit 2 (specifically the rear enclosure inner panel 220) is defined as the first point, and the connection point between the bracket connecting portion 610 and the rear enclosure unit 2 (specifically the rear enclosure inner panel 220) is defined as the second point. In order to simplify the connection structure and enhance the connection strength, the first point and the second point overlap with each other, as shown in FIG. Figure 4 and Figure 5 shown.

[0061] An implementation example of the above-mentioned form 2) is as follows: 2-1) A first connecting hole 421 is provided on the inner flange 420, a second connecting hole is provided on the bracket connecting portion 610, and a third connecting hole is provided on the rear enclosure unit 2 (specifically, the rear enclosure inner panel 220). The first connecting hole 421, the second connecting hole and the third connecting hole correspond to each other, and the connection between the first reinforcing bracket 4, the rear enclosure unit 2 (specifically, the rear enclosure inner panel 220) and the second reinforcing bracket 6 is realized by the same set of threaded connectors passing through the first connecting hole 421, the second connecting hole and the third connecting hole; in this implementation method, the first connecting hole 421, the second connecting hole and the third connecting hole correspond one to one, and in order to facilitate connection and improve connection reliability, a plurality of first connecting holes 421 (for example, two or three) are provided along the up and down directions; it should also be noted that the connection method between the first reinforcing bracket 4 and the rear enclosure unit 2 (specifically, the rear enclosure inner panel 220) can be welding to avoid affecting the appearance of the rear enclosure. 2-2) The first reinforcing bracket 4, the rear enclosure unit 2 (specifically, the rear enclosure inner panel 220) and the second reinforcing bracket 6 are connected by multi-layer welding.

[0062] In addition to the second reinforcement bracket 6, functional device mounting points are formed on the second reinforcement bracket 6. While ensuring the reinforcement effect, the number of mounting brackets in the rear area is reduced, ensuring that some functional devices can be adaptively installed in the rear area. Functional devices include, but are not limited to, cameras and sensors, and are selected based on the vehicle design and user needs. The functional device mounting points include, but are not limited to, mounting holes.

[0063] See Figure 3 、 Figure 8 and Figure 9 The side panel unit 1 includes a side panel outer panel 110 and a wheel cover structure arranged on the inner side of the side panel outer panel 110 (which includes a wheel cover inner panel 130 and a wheel cover outer panel 120 arranged on the outer side of the wheel cover inner panel 130), and a side panel force transmission cavity 101 is formed between the side panel outer panel 110 and the wheel cover structure. The side panel unit 1 also includes a pillar inner panel 140 connected to the rear part of the wheel cover structure; the rear panel unit 2 includes a rear panel and a rear panel inner panel 220 arranged on the inner side of the rear panel outer panel 210, and a rear panel force transmission cavity 201 is formed between the rear panel outer panel 210 and the rear panel inner panel 220, and the lower part of the pillar inner panel 140 is also connected to the rear panel inner panel 220. Based on this, in order to further improve the integrity of the rear structure of the vehicle body and increase the force transmission path, the rear outer panel 210 is connected to the side outer panel 110, and the rear inner panel 220 is connected to the wheel arch structure. Through this structural design, the side and rear panels at the rear of the vehicle body can both play a role in transmitting and leveraging force, further improving the structural strength and torsional stiffness of the entire vehicle, and the deformation ability to cope with low-speed collisions can be effectively improved.

[0064] The force transmission path after the overall connection is achieved is as follows Figure 2As shown by the thick solid double arrows, the upper portion of the rear side force transmission cavity 201 can transmit force in the left-right direction, the front portion can transmit force in the left-right direction, and force transmission can also be achieved between the upper and front portions of the rear side force transmission cavity 201. Force transmission can also be achieved between the rear side unit 2 and the pillar inner panel 140, between the pillar inner panel 140 and the wheel arch structure, and between the rear side unit 2 and the wheel arch structure. Therefore, whether the rear side unit 2, the side panel 110 in the area where the pillar is located, or the wheel arch structure collides, the applied force is effectively dispersed through the above-described force transmission paths, resulting in smoother force transmission and reduced deformation of the rear vehicle body structure.

[0065] On the basis of the above embodiment, in order to realize the connection between the rear inner panel 220 and the wheel cover structure, see Figure 1 and Figure 2 The rear inner panel 220 has a flange extending from its side edge, which is fitted and connected to the wheelhouse structure. Examples of methods for connecting the rear inner panel 220 flange to the wheelhouse structure include: the rear inner panel 220 flange, the wheelhouse inner panel 130, and the wheelhouse outer panel 120 can be connected via three-layer welding. Alternatively, the rear inner panel 220 flange, the wheelhouse inner panel 130, and the wheelhouse outer panel 120 can be connected via a single set of threaded fasteners. In a specific implementation, the side edge of the rear inner panel 220 is bent forward to form the rear inner panel 220 flange. The flange is provided with an arcuate groove, which not only avoids components of the wheelhouse structure but also contributes to lightweighting.

[0066] Based on the same inventive concept, an embodiment of the present application also provides a vehicle, including the above-mentioned vehicle body rear structure assembly.

[0067] Compared with the prior art, the vehicle provided in this embodiment promotes the improvement of the structural strength and torsional stiffness of the entire vehicle by adopting the above-mentioned rear body structure assembly with better structural strength and torsional stiffness, thereby reducing the degree of deformation of the vehicle body when a collision occurs, which not only reduces maintenance costs but also improves driving safety. In addition, compared with the traditional rear structure, the rear body structure assembly of this embodiment mainly has the first reinforcing bracket 4 as the additional component. However, since the first reinforcing bracket 4 is arranged in the rear force transmission channel 3, the overall volume is relatively small, and the impact on the vehicle body weight and energy consumption is very small. It can achieve effective reinforcement of the rear body structure at a lower cost and weight, thereby improving the overall low-speed collision performance of the vehicle. At the same time, the cost of the entire vehicle is also relatively low, and it has stronger market competitiveness.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle body rear structure assembly, characterized in that: include: A side panel unit (1) having a side panel force transmission cavity (101); A rear enclosure unit (2) having a rear enclosure force transmission cavity (201), wherein the side enclosure force transmission cavity (101) is communicated with the rear enclosure force transmission cavity (201) to form a rear force transmission channel (3) extending along the circumference of the vehicle body; and The first reinforcing bracket (4) is supported and connected in the inside of the rear force transmission channel (3) along the inside-outside direction.

2. The vehicle body rear structure assembly according to claim 1, characterized in that: The first reinforcing bracket (4) includes a reinforcing plate (410), the inner side of the reinforcing plate (410) is bent to form an inner flange (420), and the outer side of the reinforcing plate (410) is bent to form an outer flange (430), the inner flange (420) is closely connected to the inner wall of the rear force transmission channel (3), and the outer flange (430) is closely connected to the outer wall of the rear force transmission channel (3), and the bending directions of the inner flange (420) and the outer flange (430) are opposite.

3. The vehicle body rear structure assembly according to claim 1, characterized in that: The top of the first reinforcing bracket (4) is connected to the top wall of the rear force transmission channel (3), and the bottom of the first reinforcing bracket (4) is connected to the bottom wall of the rear force transmission channel (3).

4. The vehicle body rear structure assembly according to claim 1, characterized in that: An operating opening (5) is formed on the inner side of the rear enclosure unit (2), and the operating opening (5) corresponds to the rear enclosure force transmission cavity (201). The vehicle body rear structure assembly further comprises a second reinforcing bracket (6) that is fitted and connected to the inner side of the side enclosure unit (1) and / or the inner side of the rear enclosure unit (2), and the second reinforcing bracket (6) is arranged across the operating opening (5).

5. The vehicle body rear structure assembly according to claim 4, characterized in that: The second reinforcing bracket (6) is an inwardly arched bracket.

6. The vehicle body rear structure assembly according to claim 4 or 5, characterized in that: The first reinforcing bracket (4) is arranged corresponding to the operating opening (5), the inner side of the first reinforcing bracket (4) is connected to the inner wall of the rear force transmission channel (3), and the outer side is connected to the outer wall of the rear force transmission channel (3); The area on the second reinforcing bracket (6) that is in contact with the inner side of the rear enclosure unit (2) is defined as a bracket connecting portion (610), and the inner side of the first reinforcing bracket (4) is also connected to the bracket connecting portion (610).

7. The vehicle body rear structure assembly according to claim 4, characterized in that: Functional device mounting points are formed on the second reinforcement bracket (6).

8. The vehicle body rear structure assembly according to claim 1, wherein: The side enclosure unit (1) comprises a side enclosure outer panel (110) and a wheel cover structure provided on the inner side of the side enclosure outer panel (110), wherein the side enclosure force transmission cavity (101) is formed between the side enclosure outer panel (110) and the wheel cover structure; the rear enclosure unit (2) comprises a rear enclosure outer panel (210) and a rear enclosure inner panel (220) provided on the inner side of the rear enclosure outer panel (210), wherein the rear enclosure force transmission cavity (201) is formed between the rear enclosure outer panel (210) and the rear enclosure inner panel (220); the rear enclosure outer panel (210) is connected to the side enclosure outer panel (110), and the rear enclosure inner panel (220) is connected to the wheel cover structure.

9. The vehicle body rear structure assembly according to claim 8, characterized in that: A rear inner panel (220) flange extends from the side edge of the rear inner panel (220), and the rear inner panel (220) flange is fitted and connected to the wheel cover structure.

10. A vehicle, characterized in that: It comprises the vehicle body rear structure assembly as described in any one of claims 1 to 9.

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