Rear wall assembly and vehicle

Abstract

The rear wall assembly comprises an inner plate and an outer plate, the outer plate comprises a first welding part, a first bearing part and a peripheral main plate, and the first welding part and the first bearing part are connected to the two sides of the peripheral main plate; the inner plate is located on the side, close to the vehicle body, of the outer plate and comprises a second welding part, a second bearing part and an inner main plate, the second welding part and the second bearing part are connected to the two sides of the inner main plate, the outer main plate and the inner main plate are spaced to form an energy absorption cavity, and the second welding part and the first welding part are fixed in an attached mode. The second bearing part and the first bearing part are attached and fixed, and spare tire groove mounting holes are formed in the first bearing part and the second bearing part. Therefore, the first bearing part on one side of the outer plate and the second bearing part on one side of the inner plate are attached and fixed together, and the inner plate and the outer plate are provided with the spare tire groove mounting holes which penetrate through the inner plate and the outer plate at the same time, so that the structure of the rear wall assembly is simple, the effect of reducing cost can be achieved, and the weight of a spare tire groove part can be borne.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle parts, in particular to a rear wall assembly and a vehicle. BACKGROUND

[0002] In order to improve the safety performance of the vehicle, a rear wall assembly is arranged at the tail of the vehicle, so as to improve the performance of the vehicle. In addition, the rear wall assembly also has the function of connecting with the spare tire groove to bear part of the weight of the spare tire groove. However, the structure of the existing rear wall assembly is redundant, which is not conducive to meeting the needs of energy saving and emission reduction and high cost performance in the current automobile industry. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a rear wall assembly and a vehicle, which aims to solve the above technical problems existing in the prior art.

[0004] In order to solve the above problems, the present application provides a rear wall assembly, which comprises an inner plate and an outer plate. The outer plate comprises a first welding portion, a first receiving portion and an outer peripheral main plate. The first welding portion and the first receiving portion are connected on both sides of the outer peripheral main plate. The inner plate is located on the side of the outer plate close to the vehicle body. The inner plate comprises a second welding portion, a second receiving portion and an inner peripheral main plate. The second welding portion and the second receiving portion are connected on both sides of the inner peripheral main plate. The outer peripheral main plate and the inner peripheral main plate are spaced apart to form an energy absorption cavity. The second welding portion and the first welding portion are fixedly attached. The second receiving portion and the first receiving portion are fixedly attached. The first receiving portion and the second receiving portion are provided with a spare tire groove mounting hole.

[0005] In some embodiments, the first receiving portion and the second receiving portion are both arranged to extend in the first direction.

[0006] In some embodiments, the rear wall assembly comprises a first reinforcing plate. The first reinforcing plate is located in the energy absorption cavity. The first reinforcing plate comprises a first support main body and a lower welding edge. The lower welding edge is bent and arranged to extend in the first direction from the first support main body. The lower welding edge is located between the first receiving portion and the second receiving portion. The two surfaces of the lower welding edge are connected with the first receiving portion and the second receiving portion. The size of the lower welding edge in the first direction is smaller than the size of the first receiving portion.

[0007] In some embodiments, the first support main body is arranged to be spaced apart from the outer peripheral main plate. The first support main body comprises a support portion and an abutting portion. The support portion comprises a lower support portion and a side support portion. The side support portion is located on both sides of the abutting portion in the second direction. The two sides of the lower support portion are connected with the abutting portion and the lower welding edge. The side support portion and the lower support portion are supported between the abutting portion and the outer peripheral main plate.

[0008] In some embodiments, the inner peripheral main plate comprises a lock mounting portion connected to the second receiving portion near one end of the inner peripheral main plate, the plane where the abutting portion is located intersects with the plane where the second receiving portion is located, and the upper surface of the abutting portion abuts against the lower surface of the lock mounting portion.

[0009] In some embodiments, the rear wall assembly further comprises a second reinforcing plate symmetrically arranged in the second direction in the energy absorption cavity, the second reinforcing plate comprises a reinforcing portion and a connecting portion, the connecting portion is located on both sides of the reinforcing portion, one connecting portion is connected between the first welding portion and the second welding portion, and the other connecting portion is connected between the first receiving portion and the second receiving portion, the reinforcing portion is curved and extends in the first direction from the connecting portion near the first welding portion, and then curved and extends in a direction perpendicular to the first direction towards the other connecting portion.

[0010] In some embodiments, the second reinforcing plate comprises a second support main body supported between the reinforcing portion and the outer plate.

[0011] In some embodiments, the second reinforcing plate is arranged on both sides of the first reinforcing plate in the second direction, the second support main body extends in the second direction towards the first reinforcing plate from the end of the reinforcing portion to form a third welding portion, the side support portion is provided with a side welding edge in the second direction towards the second reinforcing plate from the end of the abutting portion, and the third welding portion is connected with the side welding edge and the peripheral main plate respectively.

[0012] In some embodiments, the peripheral main plate comprises an energy absorption portion connected to the first receiving portion near the second welding portion, the energy absorption portion is inclined and arranged to extend in the first direction, and the energy absorption portion is provided with a plurality of energy absorption ribs arranged at intervals, the energy absorption ribs protrude from the energy absorption portion in the direction away from the inner plate.

[0013] To solve the above problems, the application provides a vehicle, which comprises the rear wall assembly as described above, and the rear wall assembly is connected with the spare tire groove to receive part of the weight of the spare tire groove

[0014] Compared with the prior art, the rear wall assembly and the vehicle provided by the application comprise an inner plate and an outer plate, the outer plate comprises a first welding portion, a first receiving portion and an outer main plate, the first welding portion and the first receiving portion are connected on both sides of the outer main plate; the inner plate is located on the side of the outer plate close to the vehicle body, the inner plate comprises a second welding portion, a second receiving portion and an inner main plate, the second welding portion and the second receiving portion are connected on both sides of the inner main plate, the outer main plate and the inner main plate are spaced apart to form an energy absorption cavity, the second welding portion and the first welding portion are fixedly attached together, the second receiving portion and the first receiving portion are fixedly attached together, and the first receiving portion and the second receiving portion are provided with a spare tire groove mounting hole. Through the above-mentioned implementation, the first receiving portion on one side of the outer plate and the second receiving portion on one side of the inner plate are fixedly attached together, and the spare tire groove mounting hole which penetrates through the inner plate and the outer plate is mounted on the inner plate and the outer plate, so that the structure of the rear wall assembly is relatively simple, and the effect of reducing cost can be achieved, and the spare tire groove part weight can be received. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] Figure 1 is a first perspective view of an embodiment of the rear wall assembly provided by the application;

[0017] Figure 2 is Figure 1 a sectional view of the rear wall assembly shown in FIG. 1 along the A-A direction;

[0018] Figure 3 is Figure 1 an exploded view of the rear wall assembly shown in FIG. 1;

[0019] Figure 4 is Figure 3 a structural schematic view of the first reinforcing plate shown in FIG. 2;

[0020] Figure 5 is Figure 3 a structural schematic view of the second reinforcing plate shown in FIG. 3;

[0021] Figure 6 is Figure 3 an enlarged structural schematic view of the rear wall assembly at B shown in FIG. 4;

[0022] Figure 7 is Figure 1 a structural schematic view of the rear wall assembly from a second perspective shown in FIG. 5.

[0023] Reference signs: rear wall assembly 10; outer plate 100; first welding portion 110; first receiving portion 120; outer main plate 130; energy absorbing portion 131; energy absorbing rib 1311; inner plate 200; second welding portion 210; second receiving portion 220; spare tire groove mounting hole 221; inner main plate 230; lock catch mounting portion 231; energy absorbing cavity 500; first reinforcing plate 300; first support main body 310; support portion 311; lower support portion 3111; side support portion 3112; abutting portion 312; lower welding edge 330; side welding edge 340; second reinforcing plate 400; reinforcing portion 410; connecting portion 420; second support main body 430; third welding portion 431; first direction X; second direction Y. DETAILED DESCRIPTION

[0024] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "include" and "have" and any variations thereof used in the specification and claims of the present application and the above description of the drawings are intended to cover the non-exclusive inclusion.

[0026] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0027] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0029] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0030] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0031] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] In order to improve the safety performance of the vehicle, a rear wall assembly is arranged at the tail of the vehicle, so as to improve the overall performance of the vehicle. In addition, the rear wall assembly also has the function of connecting with the spare tire groove to bear part of the weight of the spare tire groove. However, the structure of the existing rear wall assembly is redundant, which is not conducive to meeting the needs of energy saving and emission reduction, high cost performance in the current automobile industry.

[0033] To solve the problems in the prior art, an embodiment of a rear wall assembly is provided, which is connected to a spare tire groove on one side of a vehicle body to support part of the weight of the spare tire groove. Specifically, the rear wall assembly includes an inner plate, an outer plate, and a lower sealing plate. The inner plate is arranged on the side of the outer plate close to the spare tire groove, and the inner plate and the outer plate are partially spaced apart to form an energy absorption cavity. The outer plate includes a first welding portion, a first supporting portion, and a peripheral main plate. The upper and lower sides of the peripheral main plate are connected to the first welding portion and the first supporting portion, respectively. The inner plate includes a second welding portion, a second supporting portion, and an inner peripheral main plate. The upper and lower sides of the inner peripheral main plate are connected to the second welding portion and the second supporting portion, respectively. The first welding portion and the second welding portion are fixedly connected. The second supporting portion is arranged in the first direction, which can be understood as the direction of the inner plate towards the spare tire groove. The first supporting portion is arranged in the first direction and away from the inner peripheral main plate based on the peripheral main plate. The lower sealing plate has an L-shaped cross section, i.e., the lower sealing plate includes a first plate and a second plate, and the first plate and the second plate are connected perpendicularly. One side of the first plate is fixedly attached to the second supporting portion, and the same side of the second plate is fixedly attached to the second supporting portion, so that the lower end of the inner plate is connected to the lower end of the outer plate through the lower sealing plate. The first plate and the second supporting portion are provided with mounting holes penetrating through the two plates, and the mounting holes are used for mounting the spare tire groove. The second supporting portion supports the side edge of the spare tire groove, so that the spare tire groove can be supported on the rear wall assembly.

[0034] However, the structure of the rear wall assembly of the embodiment is relatively complex, and the weight is relatively heavy.

[0035] To solve the problems in the prior art, another embodiment is provided. Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a first perspective view of an embodiment of the rear wall assembly provided by the present application. Figure 2 is Figure 1 a sectional view of the rear wall assembly shown in

[0036] The rear wall assembly 10 includes an inner plate 200 and an outer plate 100. The outer plate 100 includes a first welding portion 110, a first supporting portion 120, and a peripheral main plate 130. The first welding portion 110 and the first supporting portion 120 are connected to the two sides of the peripheral main plate 130. The inner plate 200 is arranged on the side of the outer plate 100 close to the vehicle body. The inner plate 200 includes a second welding portion 210, a second supporting portion 220, and an inner peripheral main plate 230. The second welding portion 210 and the second supporting portion 220 are connected to the two sides of the inner peripheral main plate 230. The peripheral main plate 130 and the inner peripheral main plate 230 are spaced apart to form an energy absorption cavity 500. The second welding portion 210 and the first welding portion 110 are fixedly attached. The second supporting portion 220 and the first supporting portion 120 are fixedly attached. The first supporting portion 120 and the second supporting portion 220 are provided with a spare tire groove mounting hole 221.

[0037] The outer plate 100 comprises a first welding portion 110, a first receiving portion 120, and a peripheral main plate 130. The peripheral main plate 130 can be vertically arranged to resist external impact. The first welding portion 110 can be understood as an extension of the peripheral main plate 130 away from the first receiving portion 120. The angle between the extension and the peripheral main plate 130 can be obtuse, which can make the outer plate 100 stronger and reduce the risk of bending of the first welding portion 110.

[0038] The inner plate 200 comprises a second welding portion 210, a second receiving portion 220, and an inner peripheral main plate 230. The inner peripheral main plate 230 can be arranged in correspondence with the outer plate 100. The second welding portion 210 and the second receiving portion 220 can be located at the upper and lower ends of the inner peripheral main plate 230, respectively. The second welding portion 210 can be regarded as an extension of one end of the inner peripheral main plate 230 away from the second receiving portion 220 in the direction of the outer plate 100, and the second welding portion 210 is fixedly attached to the first welding portion 110. In this way, the inner peripheral main plate 230 and the peripheral main plate 130 are spaced apart and form an energy absorption cavity 500, thereby improving the impact resistance of the rear wall assembly 10. In addition, the first receiving portion 120 and the second receiving portion 220 are directly attached together. The rear wall assembly 10 further comprises a spare tire groove mounting hole 221, which simultaneously penetrates the first receiving portion 120 and the second receiving portion 220. The end of the spare tire groove close to the rear wall assembly 10 is connected to the rear wall assembly 10 through the spare tire groove mounting hole 221. The radial dimension of the mounting hole of the second receiving portion 220 can be greater than the radial dimension of the mounting hole of the first receiving portion 120, so as to avoid the hole of the second receiving portion 220 hindering the insertion of the bolt after electrophoresis or punching, thereby enabling the screw to be smoothly inserted into the spare tire groove mounting hole 221. The spare tire groove mounting hole 221 can be arranged in the middle of the second receiving portion 220. Positioning holes can also be arranged on both sides of the spare tire groove mounting hole 221 in the second direction Y. The positioning holes can be arranged in a spaced-apart manner with the spare tire groove mounting hole 221, so as to make the positioning of the spare tire groove more accurate.

[0039] According to the above embodiment, the first receiving portion 120 on one side of the outer plate 100 and the second receiving portion 220 on one side of the inner plate 200 are fixedly attached together. The inner plate 200 and the outer plate 100 are provided with a spare tire groove mounting hole 221 that simultaneously penetrates the inner plate 200 and the outer plate 100, thereby making the structure of the rear wall assembly 10 relatively simple. Directly connecting the first receiving portion 120 and the second receiving portion 220 reduces the installation of the lower sealing plate, thereby speeding up the production efficiency and also accommodating the spare tire groove. In this way, the purpose of weight reduction and cost reduction is achieved, and the spare tire groove part of the weight can also be accommodated.

[0040] In some embodiments, the first receiving portion 120 and the second receiving portion 220 are both arranged to extend along the first direction X. The first direction X can be understood as the direction in which the inner plate 200 faces the spare tire groove. The second receiving portion 220 and the first receiving portion 120 are arranged to extend along the first direction X, the second receiving portion 220 can be understood as the side of the inner peripheral main plate 230 away from the second welding portion 210 being bent to extend along the first direction X, and the first receiving portion 120 can be understood as the outer peripheral main plate 130 also being bent to extend along the first direction X. The first receiving portion 120 and the second receiving portion 220 are fixedly connected to each other so that the outer plate 100 and the inner plate 200 simultaneously receive the spare tire groove. In addition, the second receiving portion 220 has an angle relative to the inner peripheral main plate 230, and the angle can be greater than or equal to 90 degrees. Thus, after the spare tire groove is received by the second receiving portion 220, the deformation of the second receiving portion 220 can be reduced, and the height of the installation of the spare tire groove can be increased. In addition, although the first receiving portion 120 and the second receiving portion 220 are connected together, there is still a gap between the first receiving portion 120 and the second receiving portion 220. When the vehicle is driven in the rain or on a road with water, water can enter the rear wall assembly 10 from the gap. To prevent rusting, waterproof glue can be arranged between the first receiving portion 120 and the second receiving portion 220 and the part where the first receiving portion 120 and the spare tire groove are connected. In addition, the first receiving portion 120 and the second receiving portion 220 are arranged to extend along the first direction X and are perpendicular to the vertical direction, which can reduce the water inlet path of the rear wall assembly 10, thereby reducing the risk of rusting of the rear wall assembly 10, and can also save the cost of gluing.

[0041] Referring to Figure 3 and Figure 4 , Figure 3 is Figure 1 a disassembled schematic view of the rear wall assembly. Figure 4 is Figure 3 a structural schematic view of the first reinforcing plate.

[0042] In some embodiments, the rear wall assembly 10 comprises a first reinforcing plate 300, the first reinforcing plate 300 is located in the energy absorption cavity 500, the first reinforcing plate 300 comprises a first support body 310 and a lower welding edge 330, the lower welding edge 330 is arranged to extend in the first direction X from the first support body 310, the lower welding edge 330 is located between the first receiving part 120 and the second receiving part 220, the two surfaces of the lower welding edge 330 are connected with the first receiving part 120 and the second receiving part 220, and the size of the lower welding edge 330 in the first direction X is smaller than the size of the first receiving part 120. The first reinforcing plate 300 is located in the energy absorption cavity 500, so that the first support body 310 is supported between the inner wall main plate 230 and the outer wall main plate 130. The lower welding edge 330 can be understood as an end of the first support body 310 close to the second receiving part 220 extending in the first direction X. The lower welding edge 330 is connected to an end of the first support body 310 close to the first receiving part 120, the lower welding edge 330 is located between the first receiving part 120 and the second receiving part 220, and is fixedly attached to the first receiving part 120 and the second receiving part 220, thereby forming a three-layer welding structure of the second receiving part 220-the lower welding edge 330-the first receiving part 120, which jointly receives the spare tire groove, thereby improving the strength of the rear wall assembly 10, and also improving the receiving capacity of the rear wall assembly 10. In addition, the size of the lower welding edge 330 in the first direction X is smaller than the size of the first receiving part 120 and the second receiving part 220 in the first direction X, that is, the parts of the second receiving part 220 and the first receiving part 120 corresponding to the lower welding edge 330 extend in the first direction X relative to the lower welding edge 330, thereby reducing the weight of the first reinforcing plate 300. The first receiving part 120 is provided with a stepped structure, so that the parts of the first receiving part 120 and the second receiving part 220 extending relative to the lower welding edge 330 are also fixedly attached, which can improve the strength between the first receiving part 120 and the second receiving part 220, thereby forming a mounting surface for mounting the spare tire groove on the upper surface of the second receiving part 220, the size of the mounting surface matches the welding surface of the spare tire groove, so that the size of the mounting surface is as small as possible to meet the minimum requirement of the spare tire groove installation, thereby achieving lightweight. The size of the mounting surface can be 40mm x 40mm, the length of 40mm is the size of the end of the second receiving part 220 away from the inner wall main plate 230 to the inner wall main plate 230, and the width of 40mm is the size of the mounting surface of the second receiving part 220 in the second direction Y.

[0043] In some embodiments, the first support body 310 is spaced apart from the peripheral main plate 130, the first support body 310 comprises a support part 311 and an abutting part 312, the support part 311 comprises a lower support part 3111 and a side support part 3112, the side support part 3112 is located on both sides of the abutting part 312 in the second direction Y, both sides of the lower support part 3111 are connected to the abutting part 312 and the lower welding edge 330, the side support part 3112 and the lower support part 3111 are supported between the abutting part 312 and the peripheral main plate 130. The first support body 310 is spaced apart from the peripheral main plate 130, and the first support body 310 is supported between the inner plate 200 and the outer plate 100 to form an energy absorption space. The first support body 310 comprises a support part 311 and an abutting part 312, the support part 311 comprises a lower support part 3111 and a side support part 3112, the abutting part 312 is connected to an upper welding edge near one end of the first welding part 110, the upper welding edge is fixedly connected between the first welding part 110 and the second welding part 210, the other end of the abutting part 312 is connected to one end of the lower support part 3111, the other end of the lower support part 3111 is connected to the lower welding edge 330, the lower support part 3111 can be arranged in the vertical direction, so that the lower support part 3111 can share the downward pressure from the second receiving part 220, and can also share the impact force from the outer plate 100. The side support part 3112 is located on both sides of the abutting part 312 in the second direction Y, the side support part 3112 and the lower support part 3111 are supported between the peripheral main plate 130 and the abutting part 312, which can improve the bending resistance of the first reinforcing plate 300. The first support body 310 is also connected with the peripheral main plate 130, so that the first reinforcing plate 300 and the outer plate 100 can transmit the pressure received to each other, thereby improving the bending resistance of the entire rear wall assembly 10. In addition, the lower support part 3111 and the side support part 3112 are provided with reinforcing ribs in the direction of their respective extension, thereby further improving the overall strength of the first reinforcing plate 300.

[0044] In some embodiments, the inner main plate 230 comprises a lock mounting portion 231 connected to the second welding portion 210 near one end of the inner main plate 230, the plane where the abutting portion 312 is located intersects the plane where the second receiving portion 220 is located, and the upper surface of the abutting portion 312 abuts the lower surface of the lock mounting portion 231. The intersection of the plane where the abutting portion 312 is located and the plane where the second receiving portion 220 is located can be understood as the plane where the abutting portion 312 extends away from the end of the upper welding edge intersects the plane where the second receiving portion 220 is located, and the intersection angle can be an acute angle, so that the energy absorption effect of the energy absorption space formed by the first reinforcing plate 300 and the outer main plate 130 is better, and when the rear wall assembly 10 is subjected to pressure, the deformation amount of the first reinforcing plate 300 is smaller, and it can withstand greater pressure. The inner main plate 230 further comprises a lock mounting portion 231, and the inclination angle of the lock mounting portion 231 is the same as that of the abutting portion 312, thereby making the energy absorption effect of the energy absorption cavity 500 formed by the inner plate 200 and the outer plate 100 better. It can also make the lock mounting portion 231 and the abutting portion 312 abut each other to increase the thickness of the inner main plate 230 in a direction. The abutment of the lock mounting portion 231 and the abutting portion 312 can also transmit the pressure received by the inner main plate 230 to the abutting portion 312, and the abutting portion 312 is connected to the outer main plate 130 through the first support body 310, thereby improving the overall strength of the rear wall assembly 10.

[0045] Referring to Figure 5 , Figure 5 is Figure 3 the structural schematic diagram of the second reinforcing plate.

[0046] In some embodiments, the rear wall assembly 10 further comprises a second reinforcing plate 400, the second reinforcing plate 400 is symmetrically arranged in the energy absorption cavity 500 in the second direction Y, the second reinforcing plate 400 comprises a reinforcing portion 410 and a connecting portion 420, the connecting portion 420 is located on both sides of the reinforcing portion 410, one of the connecting portions 420 is connected between the first welding portion 110 and the second welding portion 210, and the other connecting portion 420 is connected between the first receiving portion 120 and the second receiving portion 220, the reinforcing portion 410 can be seen as being arranged by bending and extending the connecting portion 420 close to the first welding portion 110 in the first direction X, and then bending and extending in a direction perpendicular to the first direction X towards the other connecting portion 420. The second reinforcing plate 400 is symmetrically arranged in the energy absorption cavity 500, which can strengthen the strength of the rear wall assembly 10 while making the stress more uniform. The second reinforcing plate 400 comprises the reinforcing portion 410 and the connecting portion 420, the reinforcing portion 410 and the outer peripheral main plate 130 are arranged at intervals, the connecting portion 420 is located on both sides of the reinforcing portion 410, the connecting portion 420 on one side of the reinforcing portion 410 is fixedly connected between the first receiving portion 120 and the second receiving portion 220, and the connecting portion 420 on the other side is fixedly connected between the first welding portion 110 and the second welding portion 210, so that the force received by the inner plate 200 and the outer plate 100 can be transmitted to the first reinforcing plate 300, thereby improving the strength of the rear wall assembly 10 and the ability to receive the spare tire groove. The reinforcing portion 410 arranged in the second direction Y can be understood as the reinforcing portion 410 having a width in the second direction Y, the connecting portion 420 close to one end of the second welding portion 210 of the second reinforcing plate 400 also has a certain width in the second direction Y, and the reinforcing portion 410 can be understood as the connecting portion 420 close to one end of the second welding portion 210 being arranged by first extending in the direction close to the inner peripheral main plate 230, and then extending in the vertical direction towards the second receiving portion 220 and being connected with the other connecting portion 420. The reinforcing portion 410 has a certain width in the second direction Y, which can improve the ability of the second reinforcing plate 400 to receive pressure from the spare tire groove, thereby allowing the inner plate 200 and the outer plate 100 to share more external force. In addition, the part of the reinforcing portion 410 arranged in the vertical direction can be fixedly connected with the inner peripheral main plate 230, thereby strengthening the connection between the inner peripheral main plate 230 and the outer peripheral main plate 130, making the force transmission between the inner plate 200 and the outer plate 100 more directional, so as to improve the overall strength of the rear wall assembly 10. In other words, in addition to transmitting pressure to the second reinforcing portion 410 through the connecting portion 420, the inner plate 200 can also transmit pressure through the reinforcing portion 410, thereby making full use of the reinforcing portion 410 to resist external force, thereby improving the strength and receiving capacity of the rear wall assembly 10.

[0047] In some embodiments, the second reinforcing plate 400 comprises a second support body 430 supported between the reinforcing portion 410 and the outer plate 100. The second support body 430 can be understood as being bent and extended in the vertical direction towards the direction of the peripheral main plate 130 on one side of the reinforcing portion 410 in the second direction Y, so that the second support body 430 can support the reinforcing portion 410, and the pressure on the second receiving portion 220 of the inner plate 200 can be sequentially transmitted to the peripheral main plate 130 through the inner peripheral main plate 230, the reinforcing portion 410, and the second support body 430, thereby strengthening the connection between the inner plate 200 and the outer plate 100, improving the strength of the second reinforcing plate 400, and improving the strength of the rear wall assembly 10.

[0048] Referring to Figure 6 , Figure 6 is Figure 3 an enlarged structural schematic view of the rear wall assembly shown in FIG. 4 at B.

[0049] In some embodiments, the second reinforcing plate 400 is arranged on both sides of the first reinforcing plate 300 in the second direction Y, and the second support body 430 extends in the direction of the first reinforcing plate 300 in the second direction Y from the end away from the reinforcing portion 410 to form a third welding portion 431, and the side support portion 3112 is provided with a side welding edge 340 in the direction of the second reinforcing plate 400 in the second direction Y from the end away from the abutting portion 312, and the two surfaces of the third welding portion 431 are connected with the side welding edge 340 and the peripheral main plate 130, respectively. The second reinforcing plate 400 is provided with the third welding portion 431, which is located on the side of the second support body 430 away from the reinforcing portion 410, and the third welding portion 431 is arranged to extend in the direction of the first reinforcing plate 300. The side support portion 3112 of the first reinforcing plate 300 is provided with a side welding edge 340 at the end away from the abutting portion 312, and the side welding edge 340 is arranged to extend in the second direction Y towards the second welding edge, so that the third welding portion 431 is fixedly attached with the side welding edge 340 and the peripheral main plate 130 at the same time, thereby forming a three-layer welding structure of the side welding edge 340-third welding edge-peripheral main plate 130 at the welding position. The existing connection portion 420 of the first reinforcing plate 300, the second reinforcing plate 400, and the peripheral main plate 130 is fully utilized to form a three-layer welding structure, thereby increasing the thickness of the peripheral main plate 130 in the direction, and improving the strength of the outer plate 100.

[0050] Referring to Figure 7 , Figure 7 is Figure 1 a structural schematic view of the rear wall assembly from a second viewing angle.

[0051] In some embodiments, the peripheral main plate 130 comprises an energy absorption portion 131 connected to the first receiving portion 120 at one end close to the second welding portion 210, the energy absorption portion 131 is inclinedly arranged in the first direction X, and the energy absorption portion 131 is provided with a plurality of energy absorption ribs 1311 arranged at intervals, the energy absorption ribs 1311 protrude from the energy absorption portion 131 in a direction away from the inner plate 200. The peripheral main plate 130 comprises the energy absorption portion 131 and an impact portion, the energy absorption portion 131 can be understood as the first receiving portion 120 being inclinedly arranged in the first direction X towards the first welding portion 110, and the impact portion is arranged in a vertical direction from one end of the energy absorption portion 131 away from the first receiving portion 120 and connected with the first welding portion 110, so that the cross section of the peripheral main plate 130 and the inner peripheral main plate 230 forms a structure similar to a parallelogram, so that after the outer plate 100 is impacted, the impact of the outer plate 100 on the inner plate 200 can be reduced, and the rigidity of the peripheral main plate 130 itself can be fully utilized to absorb external impact force. In addition, the energy absorption portion 131 is also provided with energy absorption ribs 1311 arranged at intervals, the energy absorption ribs 1311 protrude in a direction away from the inner plate 200 relative to the peripheral main plate 130, which can increase the volume of the energy absorption cavity 500, and thus the structural strength of the peripheral main plate 130 can be increased. The energy absorption ribs 1311 can be semi-elliptical, and are arranged from one side of the energy absorption portion 131 close to the impact portion to one side close to the first receiving portion 120, so as to improve the strength of the energy absorption portion 131, and thus improve the impact resistance of the outer plate 100.

[0052] In summary, the first receiving portion 120 on one side of the outer plate 100 is fixedly attached to the second receiving portion 220 on one side of the inner plate 200, and the inner plate 200 and the outer plate 100 are provided with a spare tire groove mounting hole 221 which penetrates through the inner plate 200 and the outer plate 100, so that the structure of the rear wall assembly 10 is relatively simple, thereby achieving the effect of reducing cost, and also being able to receive part of the weight of the spare tire groove.

[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A backrest assembly characterized by, The rear wall assembly comprises: an outer plate comprising a first welding portion, a first receiving portion and an outer main plate, the first welding portion and the first receiving portion being connected at two sides of the outer main plate; an inner plate located at a side of the outer plate close to a vehicle body, the inner plate comprising a second welding portion, a second receiving portion and an inner main plate, the second welding portion and the second receiving portion being connected at two sides of the inner main plate, the outer main plate and the inner main plate being spaced apart to form an energy absorption cavity, the second welding portion and the first welding portion being fixedly attached, the second receiving portion and the first receiving portion being fixedly attached, the first receiving portion and the second receiving portion being provided with a spare tire groove mounting hole.

2. The backrest assembly of claim 1, wherein The first receiving portion and the second receiving portion are both arranged in a first direction.

3. The backrest assembly of claim 2, wherein, The rear wall assembly comprises a first reinforcing plate, the first reinforcing plate being located in the energy absorption cavity, the first reinforcing plate comprising a first support main body and a lower welding edge, the lower welding edge being arranged in a first direction by being bent from the first support main body, the lower welding edge being located between the first receiving portion and the second receiving portion, two surfaces of the lower welding edge being connected with the first receiving portion and the second receiving portion, and a dimension of the lower welding edge in the first direction being smaller than a dimension of the first receiving portion.

4. The backrest assembly of claim 3, wherein The first support main body is arranged in a spaced apart manner with the outer main plate, the first support main body comprising a support portion and an abutting portion, the support portion comprising a lower support portion and a side support portion, the side support portion being located at two sides of the abutting portion in a second direction, two sides of the lower support portion being connected with the abutting portion and the lower welding edge, the side support portion and the lower support portion being supported between the abutting portion and the outer main plate.

5. The backrest assembly of claim 4, wherein The inner main plate comprises a lock buckle mounting portion, the lock buckle mounting portion being connected to one end of the second welding portion close to the inner main plate, a plane where the abutting portion is located intersecting a plane where the second receiving portion is located, and an upper surface of the abutting portion abutting a lower surface of the lock buckle mounting portion.

6. The backrest assembly of claim 2, wherein The rear wall assembly further comprises a second reinforcing plate, the second reinforcing plate being symmetrically arranged in the energy absorption cavity in a second direction, the second reinforcing plate comprising a reinforcing portion and a connecting portion, the connecting portion being located at two sides of the reinforcing portion, one of the connecting portions being connected between the first welding portion and the second welding portion, and the other of the connecting portions being connected between the first receiving portion and the second receiving portion, the reinforcing portion being arranged by being bent from the connecting portion close to the first welding portion in the first direction and then being bent in a direction perpendicular to the first direction towards the other connecting portion.

7. The backrest assembly of claim 6, wherein The second reinforcing plate comprises a second support main body, the second support main body being supported between the reinforcing portion and the outer plate.

8. The backrest assembly of claim 7, wherein, The second reinforcing plate is arranged at two sides of the first reinforcing plate in the second direction, one end of the second support main body away from the reinforcing portion extending in the second direction towards the first reinforcing plate to form a third welding portion, and one end of the side support portion away from the abutting portion being provided with a side welding edge in the second direction towards the second reinforcing plate, two surfaces of the third welding portion being connected with the side welding edge and the outer main plate respectively.

9. The backrest assembly of claim 1, wherein, The peripheral main plate comprises an energy absorbing portion, which is connected to one end of the first receiving portion close to the second welding portion, is arranged to extend obliquely in a first direction, and is provided with a plurality of energy absorbing ribs arranged at intervals and protruding from the energy absorbing portion in a direction away from the inner plate.

10. A vehicle characterized by comprising: The vehicle comprises the rear wall assembly according to any one of claims 1 to 9, which is connected with the spare tire groove to receive part of the weight of the spare tire groove.

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