Rear bumper mounting structure and method

Abstract

The invention relates to the technical field of automobiles, in particular to a rear bumper mounting structure and method. The mounting structure comprises a rear bumper bracket and a rear wall bracket, a screw joint structure is arranged in the middle of the inner side of the rear bumper, the rear bumper support is detachably mounted on the screw joint structure of the rear bumper, a mounting plate is arranged on the inner side of the rear bumper support, and a clamping groove is formed in the mounting plate. The inner side of the rear wall support is fixedly installed on an automobile body, a supporting plate is arranged on the outer side of the rear wall support, a clamping plate is arranged at the root of the supporting plate, the installation plate of the rear wall support is connected to the supporting plate of the rear wall support in a pressing mode, and the clamping plate is clamped in a clamping groove of the supporting plate. According to the invention, the assembly convenience problem of the rear bumper and the vehicle body is solved, and the problems that the space of the rear bumper is small and the installation of a structure mold cannot be realized in order to meet the attractive appearance are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to a rear bumper mounting structure and a mounting method. Background Art

[0002] As a key component of the automobile exterior, the rear bumper not only protects the rear part of the vehicle, but also affects the appearance and overall aesthetic feeling of the automobile. During the automobile manufacturing process, the rear bumper needs to be reliably connected to the vehicle body to ensure the stability and safety of the vehicle during driving.

[0003] Due to insufficient space, the mounting structure for the rear bumper to cooperate with the vehicle body cannot be arranged or causes appearance defects, and vibration noise will occur during driving. In addition, in the prior art, there are methods of clamping and welding with brackets. The middle mounting bracket is in the form of a buckle. First, the buckle is installed on the middle bracket and then connected to the body sheet metal bracket. The bottom mounting bracket is connected to the body sheet metal bracket through bolts.

[0004] Technical problems existing in the prior art: First, the space of the rear bumper is narrow, making it difficult to arrange the mounting structure and easily causing appearance defects. Second, vibration and noise are likely to occur during driving, affecting the driving experience of users and the satisfaction with the vehicle quality. In addition, for the existing bracket mounting method, the mounting structure is relatively complex and the mounting process is cumbersome, increasing the time and cost of production and manufacturing. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the embodiments of the present invention is to provide a rear bumper mounting structure to solve the problem of the assembly convenience of the installation of the rear bumper and the vehicle body, and to solve the problem that the installation structure mold cannot be realized due to the small space of the rear bumper in order to meet the aesthetic requirements. The rear bumper will not be limited by the shape, resulting in the inability to arrange the installation and fixing structure with the vehicle body in the mold space, and there will be no problems of loosening, vibration noise and clamping and falling off during driving, improving the satisfaction of customers.

[0006] To achieve the above purpose, the embodiments of the present invention provide the following technical solutions: A rear bumper mounting structure includes: a rear bumper bracket and a rear surround bracket; a screwing structure is arranged in the middle of the inner side of the rear bumper, the rear bumper bracket is detachably installed on the screwing structure of the rear bumper, an installation plate is arranged on the inner side of the rear bumper bracket, and a clamping groove is opened on the installation plate; the inner side of the rear surround bracket is fixedly installed on the vehicle body, a support plate is arranged on the outer side of the rear surround bracket, a clamping plate is arranged at the root of the support plate, the installation plate of the rear bumper bracket is pressed on the support plate of the rear surround bracket, and the clamping plate is clamped in the clamping groove of the support plate.

[0007] Optionally, the screwing structure on the rear bumper is a boss post, the rear bumper support has a convex shell, and the convex shell is provided with a mounting hole. A screw passes through the mounting hole on the convex shell and is mounted on the boss post of the rear bumper.

[0008] Optionally, the boss post is inserted into the interior of the convex shell, and a limiting rib is provided on the inner wall of the convex shell. The inner edge of the limiting rib abuts against the outer wall of the boss post.

[0009] Optionally, the rear bumper has two boss posts, the rear bumper support has two convex shells respectively connected to the two boss posts, and the two convex shells are symmetrically arranged on both sides of the mounting plate.

[0010] Optionally, the outer side surface between the rear bumpers is a stepped surface, the stepped surface includes an upper support surface and a lower support surface, both the upper support surface and the lower support surface are attached to the rear bumper, and the mounting plate is located at the rear side of the junction of the upper support surface and the lower support surface.

[0011] Optionally, the rear enclosure support is integrally L-shaped, including a horizontal support plate and a vertical fixing plate. The fixing plate is fixedly connected to the vehicle body. A notch is provided on the support plate, and the fixing plate extends upward and bends toward the notch position to form the clamping plate.

[0012] Optionally, the clamping groove of the mounting plate is a long strip groove, the top of the clamping plate is a V-shaped bending plate. After installation, the mounting plate is located above the support plate, the long strip groove of the mounting plate is located at the notch of the support plate, and the bent part at the bottom of the V-shaped bending plate is clamped in the long strip groove.

[0013] Optionally, the support plate is provided with a limiting plate bent upward. There are two limiting plates, and the two limiting plates are symmetrically arranged on both sides of the clamping plate. The limiting plate and the bent part at the bottom of the clamping plate are arranged obliquely. The two sides of the mounting plate have inclined platforms arranged obliquely to the long strip groove, and the two limiting plates abut against the two inclined platforms of the mounting plate.

[0014] Optionally, an inward recessed groove is provided at the bent part of the fixing plate and the support plate, and the front end of the support plate is provided with a downward bent plate.

[0015] The embodiment of the present invention also provides an installation method using the rear bumper installation structure as described above, including: installing the rear enclosure support on the vehicle body, and installing the rear bumper support on the screwing structure inside the rear bumper; moving the rear bumper to drive the rear bumper support in the front-rear direction of the vehicle, pressing the mounting plate of the rear bumper support against the support plate of the rear enclosure support, and making the clamping plate on the support plate of the rear enclosure support be clamped into the clamping groove of the mounting plate.

[0016] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: 1. The rear bumper mounting structure of the present invention is mainly composed of a rear bumper bracket and a rear surround bracket. A screwing structure is provided in the middle of the inner side of the rear bumper. The rear bumper bracket is detachably mounted on the rear bumper by means of this screwing structure, and a clamping groove is designed on the mounting plate on the inner side of the rear bumper bracket. The inner side of the rear surround bracket is fixed to the vehicle body, and a clamping plate is provided at the root of the support plate on the outer side thereof. During assembly, the mounting plate of the rear bumper bracket is pressed against the support plate of the rear surround bracket, and the clamping plate is clamped into the clamping groove of the support plate. The cooperation between the rear bumper bracket and the rear surround bracket better solves the problem that the installation structure of the rear bumper cannot meet the requirements due to insufficient space in cooperation with the vehicle body. The cooperation between the screwing structure and the clamping structure solves the problem of vibration and abnormal noise of the rear bumper and the rear surround bracket during driving, not only simplifies the assembly process, but also ensures the firm connection between the rear bumper and the vehicle body, improving the installation efficiency and assembly stability.

[0017] 2. The cooperation between the limiting rib and the boss post can ensure the accuracy of the installation position and improve the assembly quality. This feature cooperates with the screwing structure. The screw provides axial tension, and the limiting rib provides radial restraint. The double locking ensures the installation strength. Even in case of bumps and vibrations, the rear bumper bracket can still keep closely attached to the rear bumper without loosening and abnormal noise. Moreover, when the screw is tightened, the limiting rib generates radial pre-pressure to compensate for the tolerance of the injection molded part.

[0018] 3. The two limiting plates symmetrically clamp the clamping plate, and its inclination angle matches the inclined table: it limits the left-right movement in the X direction, and enhances the pressing force through the component force of the inclined plane in the Y direction. It forms a three-dimensional constraint network in cooperation with the V-shaped clamping to prevent the rear bumper bracket from shifting due to vibrations or collisions during vehicle driving. The inclined limiting plates and the inclined table can also provide a certain elastic buffering effect, reduce the impact force on the connection part, extend the service life of the connection structure, and at the same time reduce the risk of abnormal noise during vehicle driving.

[0019] Advantages of additional aspects of the present invention will be given in the following description, some of which will become obvious from the following description, or can be learned through the practice of the present invention. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In addition, the distances or sizes between each component are exaggerated for showing the positions, and the schematic diagrams are only for illustration.

[0021] Figure 1Schematic diagram of the rear bumper support installed on the rear bumper provided by an embodiment of the present invention; Figure 2 Schematic diagram of the rear bumper support fitting with the rear bumper provided by an embodiment of the present invention; Figure 3 Schematic diagram of the rear bumper support connected to the rear bumper provided by an embodiment of the present invention; Figure 4 Schematic diagram of the rear bumper support cooperating with the rear body panel support provided by an embodiment of the present invention; Figure 5 Schematic diagram of the inner side of the rear bumper support provided by an embodiment of the present invention; Figure 6 Schematic diagram of the outer side of the rear bumper support provided by an embodiment of the present invention; Figure 7 Stereogram of the rear body panel support provided by an embodiment of the present invention; Figure 8 Rear view of the rear body panel support provided by an embodiment of the present invention; Figure 9 Schematic diagram of the rear bumper support and the rear body panel support being snap-connected provided by an embodiment of the present invention; Figure 10 Schematic diagram of the rear bumper support connected to the rear bumper provided by an embodiment of the present invention; Figure 11 Schematic diagram of the limiting plate and the inclined platform cooperating provided by an embodiment of the present invention; In the figure: 1, rear bumper; 11, boss post; 2, rear bumper support; 21, convex shell; 2,11, mounting hole; 2,12, limiting rib; 22, mounting plate; 2,21, inclined platform; 2,22, snap-in groove; 23, upper support surface; 24, lower support surface; 3, screw; 4, rear body panel support; 41, fixing plate; 42, support plate; 4,21, lower bent plate; 4,22, limiting plate; 43, snap-in plate; 44, recessed groove; 5, vehicle body; Detailed implementation manners It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanations of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present invention belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. [[ID=,38]]

[0022] Embodiment 1 The installation structure of this embodiment adds a rear bumper support 2 on the basis of directly providing installation and fixing points on the rear bumper 1, so that the installation and fixing structure of the rear bumper 1 and the rear body panel support 4 is not limited to the shape, has sufficient strength, and ensures the matching between the two and no problems of loosening, abnormal noise, and disengagement.

[0023] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, the installation structure of the rear bumper 1 in this embodiment includes a rear bumper support 2 and a rear panel support 4; a screwing structure is provided in the middle of the inner side of the rear bumper 1, the rear bumper support 2 is detachably installed on the screwing structure of the rear bumper 1, and an installation plate 22 is provided on the inner side of the rear bumper support 2, and a clamping groove 222 is formed in the installation plate 22; the inner side of the rear panel support 4 is fixedly installed on the vehicle body 5, and a support plate 42 is provided on the outer side of the rear panel support 4, and a clamping plate 43 is provided at the root of the support plate 42. The installation plate 22 of the rear bumper support 2 is pressed against the support plate 42 of the rear panel support 4, and the clamping plate 43 is clamped in the clamping groove 222 of the support plate 42.

[0024] The screwing structure ensures a reliable connection method between the rear bumper support 2 and the rear bumper 1, ensuring that the two are closely combined and will not become loose during vehicle driving. The cooperation between the clamping groove 222 and the clamping plate 43 further enhances the connection stability between the rear bumper support 2 and the rear panel support 4, preventing abnormal noises and unlocking problems caused by vehicle vibrations. Through this installation structure, the problems that the installation structure cannot be arranged or cause appearance defects due to the small installation space of the rear bumper 1 are solved. At the same time, the abnormal noise problem caused by the vibration between the vehicle body 5 and the rear bumper 1 is also solved. Without increasing the assembly complexity, the quality is further improved.

[0025] As Figure 10 shown, the screwing structure on the rear bumper 1 is a boss post 11 (with a 6 mm diameter round hole). As Figure 5 , Figure 6 shown, the rear bumper support 2 is provided with a convex shell 21, and an installation hole 211 is formed in the convex shell 21. A screw 3 passes through the installation hole 211 on the convex shell 21 and is installed on the boss post 11 of the rear bumper 1.

[0026] The cooperation form of the boss post 11 and the convex shell 21 makes the connection between the rear bumper 1 and the rear bumper support 2 more firm and simple. During the installation process, the threaded connection between the screw 3 and the boss post 11 can provide sufficient clamping force to ensure that the rear bumper support 2 is firmly fixed on the rear bumper 1. The design of the convex shell 21 not only provides an installation space for the screw 3, but also plays a role in protecting the threaded connection, avoiding damage caused by external impacts during vehicle driving.

[0027] Furthermore, the boss post 11 is inserted into the inside of the convex shell 21, and a limiting rib 212 is provided on the inner wall of the convex shell 21, and the inner edge of the limiting rib 212 abuts against the outer wall of the boss post 11.

[0028] The cooperation between the positioning rib 212 and the boss post 11 can ensure the accuracy of the installation position and improve the assembly quality. This feature is combined with the screwing structure. The screw 3 provides axial tension, and the positioning rib 212 provides radial constraint. The double locking ensures the installation strength. Even in case of bumps and vibrations, the rear bumper bracket 2 can still maintain a tight fit with the rear bumper 1 without loosening or abnormal noises. Moreover, when the screw 3 is tightened, the positioning rib 212 generates radial pre-pressure to compensate for the tolerances of the injection-molded parts.

[0029] The rear bumper 1 has two boss posts 11, and the rear bumper bracket 2 has two convex shells 21 respectively connected to the two boss posts 11, and the two convex shells 21 are symmetrically arranged on both sides of the mounting plate 22.

[0030] The design of the double boss posts 11 and the double convex shells 21 can provide a more uniform distribution of the connection force, making the connection between the rear bumper bracket 2 and the rear bumper 1 more stable. The symmetrically arranged convex shells 21 can ensure that the rear bumper bracket 2 remains balanced when stressed, avoiding deformation or damage caused by single-point stress, further reducing the occurrence of vibration or loosening phenomena, and increasing the reliability of the structure. During the vehicle driving process, the rear bumper 1 will be subjected to forces from various directions. The design of the double connection points can better resist the action of these forces, improving the reliability and durability of the installation structure of the rear bumper 1.

[0031] As Figure 2 、 Figure 6 、 Figure 9 shown, the outer side surface between the rear bumpers is a stepped surface, and the stepped surface includes an upper support surface 23 and a lower support surface 24. Both the upper support surface 23 and the lower support surface 24 are in contact with the rear bumper 1, and the mounting plate 22 is located at the rear side of the junction of the upper support surface 23 and the lower support surface 24.

[0032] The upper support surface 23 and the lower support surface 24 support the rear bumper 1 from the upper and lower positions respectively, which can effectively prevent the rear bumper 1 from shifting or deforming at the installation position. The mounting plate 22 is located at the rear side of the junction of the stepped surface. Such a position arrangement enables the rear bumper bracket 2 to better fit the shape of the rear bumper 1 after installation, and at the same time provides a reasonable space layout for the connection between the rear bumper bracket 2 and the rear panel bracket 4. The upper support surface 23, the lower support surface 24, and the mounting plate 22 cooperate to disperse the load, eliminating torsional deformation. During the vehicle driving process, it can disperse the stress received by the rear bumper 1, reduce the risk brought by local stress concentration, and extend the service life of the rear bumper 1.

[0033] As Figure 7 、 Figure 8As shown, the rear bracket 4 is L-shaped as a whole, including a horizontal support plate 42 and a vertical fixing plate 41. The fixing plate 41 is fixedly connected to the vehicle body 5. A notch is provided on the support plate 42. The fixing plate 41 extends upward and bends toward the notch to form the clip plate 43.

[0034] like Figure 9 As shown, the fixing plate 41 is welded to the vehicle body 5, ensuring the overall stability of the rear bumper bracket 4 and providing a solid foundation for the installation of the rear bumper 1. A notch design allows the fixing plate 41 to extend to form the connecting plate 43, achieving integral stamping. The space between the support plate 42 and the connecting plate 43 provides a space for the mounting plate 22 of the rear bumper bracket 2 to connect. This design ensures a tighter and more stable connection between the rear bumper bracket 2 and the rear bumper bracket 4, while also facilitating installation and removal.

[0035] The snap-in groove 222 of the mounting plate 22 is a long groove, and the top of the snap-in plate 43 is a V-shaped bent plate. After installation, the mounting plate 22 is located on the upper side of the support plate 42, and the long groove of the mounting plate 22 is located at the notch of the support plate 42. The bottom bend of the V-shaped bent plate is snapped into the long groove.

[0036] The V-bend plate provides a certain degree of installation guidance, facilitating the accurate snapping of the snap plate 43 into the groove. During installation, the V-shaped base slides along the inclined surface of the elongated groove, generating a self-locking force. The vertical component of this force presses the mounting plate 22 against the support plate 42, while the horizontal component resists dislodging. The design of the elongated groove and V-bend plate ensures a more secure snap connection, greatly improving the accuracy and firmness of the snap connection during installation.

[0037] like Figure 7 、 Figure 10 、 Figure 11 As shown, the support plate 42 is provided with an upwardly bent limit plate 422, and there are two limit plates 422. The two limit plates 422 are symmetrically arranged on both sides of the clamping plate 43, and the limit plates 422 are inclined to the bottom bending part of the clamping plate 43. The two sides of the mounting plate 22 have inclined platforms 221 arranged obliquely with the long groove, and the two limit plates 422 abut against the two inclined platforms 221 of the mounting plate 22.

[0038] After the mounting plate 22 is crimped with the support plate 42 and the clamping plate 43 is inserted into the clamping groove 222, the limiting plate 422 abuts against the inclined platform 221, restricting the movement of the mounting plate 22 in the transverse and longitudinal directions. This symmetrically arranged limiting structure can ensure that the rear bumper support 2 maintains a stable positional relationship on the rear body support 4, preventing the rear bumper support 2 from shifting due to vibrations or collisions during vehicle driving. The inclined limiting plate 422 and the inclined platform 221 can also provide a certain elastic buffering effect, reducing the impact on the connection part, extending the service life of the connection structure, and at the same time reducing the risk of abnormal noise during vehicle driving.

[0039] An inward recessed groove 44 is provided at the bent portion of the fixed plate 41 and the support plate 42. The provision of the inward recessed groove 44 helps to enhance the strength of the bent portion of the fixed plate 41 and the support plate 42. During vehicle driving, the rear body support 4 will bear various complex loads, and the bent portion is often the area where stress concentration occurs and is prone to fatigue damage. The inward recessed groove 44 can optimize the stress distribution and improve the overall strength and durability of the rear body support 4. A downwardly bent plate 421 is provided at the front end of the support plate 42, facilitating the installation operation of the rear bumper support 2, enabling the rear bumper support 2 to be assembled with the rear body support 4 more smoothly, improving production efficiency, and also helping to ensure the installation quality.

[0040] Based on the existing structure where the skin of the rear bumper 1 is directly fixed to the headlight, the mounting structure of this embodiment adds a fixing form with screws 3, so that the rear body support 4 is not directly fixed to the rear bumper 1, which well solves the problem that the mounting structure cannot be arranged or causes appearance defects due to the small mounting space for the rear bumper, and at the same time solves the problem of abnormal noise generated by the vibration between the vehicle body 5 and the rear bumper 1, without increasing the assembly complexity and further improving the quality.

[0041] Embodiment 2 This embodiment provides an installation method using the rear bumper 1 mounting structure as described in Embodiment 1, including: installing the rear body support 4 on the vehicle body 5, and installing the rear bumper support 2 on the screwing structure inside the rear bumper 1; moving the rear bumper 1 together with the rear bumper support 2 in the vehicle's front-rear direction, pressing the mounting plate 22 of the rear bumper support 2 against the support plate 42 of the rear body support 4, and engaging the clamping plate 43 on the support plate 42 of the rear body support 4 into the clamping groove 222 of the mounting plate 22.

[0042] Such an installation method is simple and efficient. First, installing the rear enclosure bracket 4 lays the foundation for subsequent steps and ensures the stability of the rear enclosure bracket 4 on the vehicle body 5. Then, installing the rear bumper support 2 onto the rear bumper 1 facilitates the subsequent overall assembly. Push the rear bumper 1 to dock the rear bumper support 2 with the rear enclosure bracket 4, and achieve quick fixation through the cooperation of crimping and clamping. The whole process does not require complex tools and cumbersome operation steps. It can effectively improve production efficiency while ensuring the installation quality, reduce the complexity and error rate of manual assembly, and is particularly suitable for large-scale automobile production and manufacturing scenarios, which helps to improve the overall efficiency and quality control level of automobile production.

[0043] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A rear bumper mounting structure, characterized in that, Comprising: A rear bumper support and a rear surround support; A screwing structure is provided in the middle of the inner side of the rear bumper. The rear bumper support is detachably installed on the screwing structure of the rear bumper. An installation plate is provided on the inner side of the rear bumper support, and a clamping groove is formed in the installation plate; The inner side of the rear surround support is fixedly installed on the vehicle body. The outer side of the rear surround support has a support plate, and a clamping plate is provided at the root of the support plate. The installation plate of the rear bumper support is pressed against the support plate of the rear surround support, and the clamping plate is clamped in the clamping groove of the support plate.

2. The rear bumper mounting structure according to claim 1, characterized in that, The screwing structure on the rear bumper is a boss post. The rear bumper support has a convex shell, and an installation hole is formed in the convex shell. A screw passes through the installation hole in the convex shell and is installed on the boss post of the rear bumper.

3. The rear bumper mounting structure according to claim 2, characterized in that, The boss post is inserted into the interior of the convex shell, and a limiting rib is provided on the inner wall of the convex shell. The inner edge of the limiting rib abuts against the outer wall of the boss post.

4. The rear bumper mounting structure according to claim 2, characterized in that, The rear bumper has two boss posts. The rear bumper support has two convex shells respectively connected to the two boss posts, and the two convex shells are symmetrically arranged on both sides of the installation plate.

5. The rear bumper mounting structure according to claim 4, wherein, The outer side surface between the rear bumpers is a stepped surface, which includes an upper support surface and a lower support surface. Both the upper support surface and the lower support surface are attached to the rear bumper, and the installation plate is located at the rear side of the junction of the upper support surface and the lower support surface.

6. The rear bumper mounting structure according to claim 1, characterized in that, The rear surround support is integrally L-shaped, including a horizontal support plate and a vertical fixing plate. The fixing plate is fixedly connected to the vehicle body. A notch is formed in the support plate, and the fixing plate extends upward and bends toward the notch position to form the clamping plate.

7. The rear bumper mounting structure according to claim 6, wherein, The clamping groove of the installation plate is a long strip groove. The top of the clamping plate is a V-shaped bent plate. After installation, the installation plate is located above the support plate. The long strip groove of the installation plate is located at the notch of the support plate, and the bent part at the bottom of the V-shaped bent plate is clamped in the long strip groove.

8. The rear bumper mounting structure according to claim 7, characterized in that, The support plate is provided with upwardly bent limiting plates. There are two limiting plates, which are symmetrically arranged on both sides of the clamping plate, and the limiting plates are inclined with respect to the bent part at the bottom of the clamping plate. Both sides of the installation plate have inclined platforms inclined with respect to the long strip groove, and the two limiting plates abut against the two inclined platforms of the installation plate.

9. The rear bumper mounting structure according to claim 6, wherein, An inward recessed groove is provided at the bent part of the fixing plate and the support plate, and the front end of the support plate is provided with a downwardly bent lower bent plate.

10. An installation method using the rear bumper installation structure according to any one of claims 1-9, characterized in that, Comprising: Install the rear surround support on the vehicle body and install the rear bumper support on the screwing structure on the inner side of the rear bumper; Make the rear bumper drive the rear bumper support to move in the front-rear direction of the vehicle. The installation plate of the rear bumper support is pressed against the support plate of the rear surround support, and the clamping plate on the support plate of the rear surround support is clamped into the clamping groove of the installation plate.

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