A rear bumper body

Abstract

The utility model relates to vehicle manufacturing technical field, concretely relates to a rear bumper body, including main part, upper edge mounting bracket and lower edge mounting bracket, be provided with first connecting rib between upper edge mounting bracket and main part, be provided with a plurality of first positioning clamping blocks on first connecting rib, be provided with second connecting rib between lower edge mounting bracket and main part, be provided with a plurality of second positioning clamping blocks on second connecting rib, wherein, the top surface of first positioning clamping block and second positioning clamping block all are along perpendicular to the direction of the edge where they are located and towards the outside of main part, can form the accurate preposition of circumference with corresponding component, reduced the alignment deviation when dismounting, reduced the bayonet, positioning mounting hole loss risk brought about by repeatedly adjusting, need not repeatedly dismounting adjustment, simultaneously form the effect that the contact surface that direction is towards the outside of main part is locked inwards in circumference when dismounting, provide the prestress of rear bumper body while improving its stability after installation.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, specifically to a rear bumper body. Background Technology

[0002] The rear bumper, as a key safety device, serves a dual function of protecting the vehicle body, occupants, and pedestrians, as well as enhancing its appearance. In the event of a collision, it effectively absorbs and cushions external impact forces, thus creating a barrier to protect the vehicle and its occupants from direct injury. Relying on internal cushioning materials and a crossbeam structure, the rear bumper, while maintaining its core protective performance, must also ensure harmony with the vehicle's styling and achieve a lightweight design.

[0003] In related technologies, automotive rear bumpers are mostly made of plastic and are connected and fixed to the vehicle body through mounting parts, clips, and screws. Due to the long length of the rear bumper, during disassembly and assembly, it is often difficult to accurately align the clips and positioning holes on one side while the other side is not. This inevitably requires repeated disassembly and adjustment of the installation position. Under the external force of repeated adjustment and disassembly, the clips and positioning holes are very prone to damage or deformation. Utility Model Content

[0004] The purpose of this utility model is to provide a rear bumper body to reduce the alignment deviation of the rear bumper body during disassembly and assembly, eliminating the need for repeated disassembly and adjustment.

[0005] This application provides a rear bumper body, including:

[0006] The main body has one side as an inner mounting surface and the other side as an outer mounting surface. Both ends of the main body are bent towards the inner mounting surface, and the bottom of the main body is bent towards the inner mounting surface.

[0007] An upper edge mounting bracket is provided along the top edge of the main body for connection with other components. A first connecting rib protruding inward to the mounting surface is provided between the upper edge mounting bracket and the main body. A plurality of first positioning blocks are provided on the first connecting rib.

[0008] A lower edge mounting bracket, provided along the bottom edge of the main body for connection with other components, is provided between the lower edge mounting bracket and the main body, with a second connecting rib protruding inward towards the mounting surface. The second connecting rib is provided with multiple second positioning blocks.

[0009] The top surfaces of the first positioning block and the second positioning block are both oriented towards the outside of the main body in a direction perpendicular to their own edges. The upper edge mounting bracket and the lower edge mounting bracket are each provided with multiple bolt holes for connecting the vehicle and the rear bumper outer panel.

[0010] In some embodiments, both the first connecting rib and the second connecting rib are provided with a plurality of mounting bases for installing the rear bumper outer panel. The mounting bases are recessed towards the inward mounting surface and have mounting slots.

[0011] In some embodiments, a primary guide plate is provided on the side wall of the mounting slot facing away from the main body and inclined toward the side of the main body, and the first positioning block and the second positioning block are both provided on the back of the corresponding primary guide plate.

[0012] In some embodiments, a secondary guide plate is provided on the inclined surface of the primary guide plate. The inclination direction of the secondary guide plate relative to the main body is the same as that of the primary guide plate, and the inclination angle is greater than that of the primary guide plate.

[0013] In some embodiments, the upper edge mounting bracket is provided with a first mounting plate recessed towards the inner mounting surface, and the first mounting plate is provided with a positioning mounting post towards the inner mounting surface, and the positioning mounting post is provided with a positioning mounting hole along its own axis.

[0014] In some embodiments, a plurality of positioning ribs are provided on the outer wall of the mounting column.

[0015] In some embodiments, a plurality of positioning grooves are provided on the sidewall of the lower edge mounting bracket and / or the sidewall of the second connecting rib facing the inner mounting surface.

[0016] In some embodiments, the upper edge mounting bracket is provided with a plurality of mounting blocks for mounting the rear bumper outer panel on the side facing the outer mounting surface, and the positioning block is recessed inward on the side facing the inner mounting surface to form a mounting groove.

[0017] In some embodiments, a plurality of reinforcing ribs are provided between the lower edge mounting bracket and the second connecting rib on the side of the lower edge mounting bracket facing the outer mounting surface.

[0018] The beneficial effects of this utility model are as follows: The rear bumper body provided in this application forms a circumferential positioning connection structure by setting an upper edge mounting bracket and a lower edge mounting bracket along the edge. The first connecting rib and the second connecting rib are set to protrude inward on the mounting surface to improve the connection strength between the mounting bracket and the main body. This not only enhances the load-bearing capacity of the bottom bending area, but also achieves the lightweight design goal through the reasonable distribution of the structure. At the same time, the first and second positioning blocks face outward along the vertical edge direction of the main body, which can form a precise circumferential pre-position with the corresponding parts, reducing the alignment deviation during disassembly and assembly, reducing the risk of wear on the locking and positioning mounting holes caused by repeated adjustments, and eliminating the need for repeated disassembly and adjustment. At the same time, during disassembly and assembly, the contact surface facing outward of the main body forms a circumferential inward locking effect, providing prestress to the rear bumper body while improving its stability after installation. This ensures both assembly efficiency and connection stability. Attached Figure Description

[0019] Figure 1 is a structural schematic diagram of the inner mounting surface of the rear bumper body in this utility model;

[0020] Figure 2 is a structural schematic diagram of the external mounting surface of the rear bumper body in this utility model;

[0021] Figure 3 is an enlarged view of A-1 in Figure 1;

[0022] Figure 4 is an enlarged view of A-2 in Figure 2;

[0023] Figure 5 is an enlarged view of B-1 in Figure 1;

[0024] Figure 6 is an enlarged view of B-2 in Figure 1.

[0025] Reference numerals: 1. Main body; 2. Upper edge mounting bracket; 21. First connecting rib; 22. First positioning block; 23. Mounting block; 24. Mounting groove; 3. Lower edge mounting bracket; 31. Second connecting rib; 32. Second positioning block; 33. Positioning groove; 34. Reinforcing rib plate; 4. Mounting base; 41. Primary guide plate; 42. Secondary guide plate; 43. Mounting slot; 5. First mounting plate; 51. Positioning mounting post; 52. Positioning mounting hole; 53. Positioning rib. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] The rear bumper, as a key safety device, serves a dual function of protecting the vehicle body, occupants, and pedestrians, as well as enhancing its appearance. In the event of a collision, it effectively absorbs and cushions external impact forces, thus creating a barrier to protect the vehicle and its occupants from direct injury. Relying on internal cushioning materials and a crossbeam structure, the rear bumper, while maintaining its core protective performance, must also ensure harmony with the vehicle's styling and achieve a lightweight design.

[0032] In related technologies, automotive rear bumpers are mostly made of plastic and are connected and fixed to the vehicle body through mounting parts, clips, and screws. Due to the long length of the rear bumper, during disassembly and assembly, it is often difficult to accurately align the clips and positioning holes on one side while the other side is not. This inevitably requires repeated disassembly and adjustment of the installation position. Under the external force of repeated adjustment and disassembly, the clips and positioning holes are very prone to damage or deformation.

[0033] In view of this, this application provides a rear bumper body to reduce the alignment deviation of the rear bumper body during disassembly and assembly, and reduce the risk of wear and tear on the bayonet and positioning mounting holes caused by repeated adjustments.

[0034] Example 1

[0035] A rear bumper body is disclosed, which serves as a connecting plate between the rear bumper outer panel and the vehicle. During installation, the rear bumper body is first connected to the vehicle, and then the rear bumper outer panel is connected to the rear bumper body to form a complete rear bumper. The entire structure is integrally injection molded from high-hardness alloy plastic material. In this embodiment, PMMA+ASA material can be used. The entire structure is constructed using a large high-gloss mirror mold, employing instantaneous rapid heating of the mold to create a mirror effect on the surface of the rear bumper body. Simultaneously, a rapid cooling molding method is used to reduce the molding cycle, thereby achieving a similar effect to traditional painting through a paint-free process.

[0036] Referring to Figures 1 and 2, the rear bumper body includes a main body 1, an upper edge mounting bracket 2, and a lower edge mounting bracket 3. One side of the main body 1 is designated as an inner mounting surface, and the other side as an outer mounting surface. Both ends of the main body 1 are bent towards the inner mounting surface, and the bottom of the main body 1 is bent towards the inner mounting surface. The inner mounting surface is the side wall of the inwardly bent side of the main body 1, which is used to tightly fit and fix the internal structure such as the vehicle frame and buffer components during disassembly and assembly. Both ends of the main body 1 are curved and bent towards the inner mounting surface, with the bending angle designed according to the rear profile of the vehicle body. The ends are bent towards the outer mounting surface at a 90° angle to form a vertical flat surface with strip holes for installing fastening bolts for fixed connection with the vehicle. The main body 1 has pre-drilled positioning mounting holes 52 for installing other components such as headlights, keyholes, and exhaust pipes. The location of the holes is set according to the compatible vehicle. At the same time, multiple connecting pieces for installing license plates are provided in the middle of the outer mounting surface of the main body 1.

[0037] Referring to Figures 3 and 4, the upper edge mounting bracket 2 is provided along the top edge of the main body 1 for connection with other components. A first connecting rib 21 protruding inward to one side of the mounting surface is provided between the upper edge mounting bracket 2 and the main body 1. Multiple first positioning blocks 22 are provided on the first connecting rib 21. The top of the main body 1 protrudes upward, and the upper edge of the main body 1 is continuously convex from one end to the other. Multiple first positioning blocks 22 are spaced apart on the upper edge mounting bracket 2. The upper edge mounting bracket 2 and the first connecting rib 21 extend continuously along the top edge of the main body 1 and are integrally formed for precise docking with components such as the lower edge of the vehicle's trunk lid and taillight bracket. The first connecting ribs 21 between the upper edge mounting bracket 2 and the main body 1 are designed to be distributed at intervals along the top edge of the main body 1. Each first connecting rib 21 has a rectangular cross-section and its inner edge is chamfered. Its root is connected to the outer mounting surface of the upper edge mounting bracket 2 by reinforcing ribs to form a stable support structure. Multiple first positioning blocks 22 are provided at intervals on the first connecting ribs 21. The first positioning blocks 22 are wedge-shaped and protrude inward to one side of the mounting surface. The wedge-shaped surface of the first positioning block faces the inner side of the main body 1, and the flat surface faces the outer side of the main body 1 and is raised outward, so that the first positioning blocks 22 are raised outward as a whole. The surface of the first positioning blocks 22 is polished and the edges are chamfered to achieve a guiding effect and reduce assembly friction.

[0038] Referring to Figures 5 and 6, the lower edge mounting bracket 3 is provided along the bottom edge of the main body 1 for connection with other components. A second connecting rib 31 protruding inward towards the mounting surface is provided between the lower edge mounting bracket 3 and the main body 1. Multiple second positioning blocks 32 are provided on the second connecting rib 31. The bottom edge of the main body 1 is located on a plane and forms a C-shaped edge by following the bending of the main body 1 towards the mounting surface. Multiple second positioning blocks 32 are spaced apart on the upper edge mounting bracket 2. The main body of the lower edge mounting bracket 3 has an inclined surface that slopes inward towards the mounting surface for connection with the vehicle chassis. The edges and other parts are fitted together, and the second connecting ribs 31 between them and the main body 1 are connected by a horizontal distribution. Each second connecting rib 31 has a rectangular cross-section and the inner edge is chamfered. Multiple second positioning blocks 32 are spaced apart on the second connecting rib 31. The second positioning blocks 32 are wedge-shaped and protrude inward to the mounting surface. The wedge-shaped surface of the second positioning block faces the inner side of the main body 1, and the flat surface faces the outer side of the main body 1 and is raised outward, so that the second positioning blocks 32 are raised outward as a whole. The surface is polished and the edges are chamfered to achieve the guiding effect and reduce assembly friction.

[0039] Referring to Figures 3 to 6, the top surfaces of both the first positioning block 22 and the second positioning block 32 face outwards from the main body 1 along a direction perpendicular to their respective edges. The surfaces of both the first positioning block 22 and the second positioning block 32 facing outwards from the main body 1 are the contact surfaces when engaging with the vehicle. Since both the first positioning block 22 and the second positioning block 32 are outwardly curved, when the main body engages with the vehicle, because the first positioning block 22 and the second positioning block 32 are continuously spaced, each time the previous first positioning block 22 or second positioning block 32 engages with the corresponding slot, the next positioning block will automatically align with the corresponding slot. After installation, the first... The top surfaces of both the first positioning block 22 and the second positioning block 32 are subjected to a force perpendicular to their own edges and toward the main body 1, causing the first positioning block 22 and the second positioning block 32 to undergo a certain elastic deformation. The elastic force of the deformation holds the main body 1 in place. When the main body 1 is disassembled, regardless of which side is disassembled from, bending the main body 1 outwards will release its elastic potential energy, causing it to lose the locking force at the connection point and return to its original shape. This makes it easier to remove the entire main body 1, reducing the alignment deviation of the rear bumper body during disassembly and assembly, and reducing the risk of wear and tear on the latches and positioning mounting holes 52 caused by repeated adjustments.

[0040] Both the upper edge mounting bracket 2 and the lower edge mounting bracket 3 have multiple bolt holes for connecting the vehicle and the outer panel of the rear bumper. Specifically, the upper edge mounting bracket 2 and the lower edge mounting bracket 3 are provided with connecting plates that protrude inward and / or outward at intervals. The connecting plates have through holes for connecting parts to pass through. The connecting plates are set vertically or adapted to the corresponding connection positions of the vehicle and the outer panel of the rear bumper. The connecting plates adapted to the vehicle protrude inward on the mounting surface side, and the connecting plates adapted to the outer panel of the rear bumper protrude outward on the mounting surface side, which facilitates alignment and fit during installation and further reduces the alignment deviation of the rear bumper body during disassembly and assembly.

[0041] Example 2

[0042] Referring to Figure 3, both the first connecting rib 21 and the second connecting rib 31 are provided with multiple mounting bases 4 for installing the rear bumper outer panel. The mounting base 4 is recessed inward to the mounting surface and has a mounting slot 43.

[0043] The mounting base 4 is spaced apart on the first connecting rib 21 and the second connecting rib 31, and is located at the junction of the first connecting rib 21 and the upper edge mounting bracket 2, and at the junction of the second connecting rib 31 and the lower edge mounting bracket 3. The shape of the mounting base 4 is determined according to the actual situation. In this embodiment, the mounting base 4 is recessed from the outer mounting surface to the inner mounting surface, thus protruding on the inner mounting surface to form a thin-walled shell. The mounting slot 43 is formed on the bottom wall of the recessed mounting base 4. The mounting slot 43 is a mounting opening for the connecting clip on the outer panel of the rear bumper to be installed. The shape of the mounting slot 43 is... According to the connecting clips on the rear bumper outer panel to be installed, in this embodiment, the mounting slot 43 is rectangular and its length direction is set along the edge direction of the main body 1 on which it is located, so as to allow the rear bumper outer panel to be installed and snapped. By setting the mounting slot 43 on the first connecting rib 21 and the second connecting rib 31, the connection position between the rear bumper outer panel and the rear bumper body and the connection position between the rear bumper body and the vehicle are located on the same path. After installation, the entire rear bumper structure forms a continuous force transmission structure of "rear bumper outer panel - rear bumper body - vehicle", thereby improving the stability of the entire structure.

[0044] Referring to Figures 3 to 6, a primary guide plate 41 is provided on the side wall of the mounting slot 43 facing away from the main body 1, which is inclined towards the side of the main body 1. The first positioning block 22 and the second positioning block 32 are both provided on the back of the corresponding primary guide plate 41. The mounting base 4 has an opening on the side facing the outer mounting surface that gradually narrows towards the mounting slot 43 to form a trapezoidal cavity. The wall of this cavity near the main body 1 extends inward in a direction perpendicular to the surface of the main body 1, while the wall away from the main body 1 extends obliquely towards the side facing the main body 1, thus forming a first-stage guide plate 41 with a guide slope, which facilitates the installation of the rear bumper outer panel. At the same time, the first positioning block 22 and the second positioning block 32 are both set on the back of the corresponding first-stage guide plate 41, so that after the rear bumper outer panel is installed, the load-bearing force is applied to the same position, thereby further forming a continuous force transmission structure. This allows the load-bearing force and external forces of the rear bumper outer panel to be directly transmitted to the vehicle, effectively preventing the rear bumper outer panel from affecting other parts of the rear bumper body and causing deformation, making the entire structure more stable.

[0045] In some embodiments, referring to Figures 3 to 6, a secondary guide plate 42 is provided on the guide slope surface of the primary guide plate 41. The inclination direction of the secondary guide plate 42 relative to the main body 1 is the same as that of the primary guide plate 41, and its inclination angle is greater than that of the primary guide plate 41. The secondary guide plate 42 is located on the wall surface of the primary guide plate 41 facing the main body 1. The inclination direction of the secondary guide plate 42 relative to the main body 1 is the same as that of the primary guide plate 41, and its inclination angle is greater than that of the primary guide plate 41. That is, the secondary guide plate 42 moves from the outer mounting surface to the inner mounting surface towards the main body 1. When the rear bumper outer panel aligns with the mounting slot 43, the initial alignment is guided by the primary guide plate 41 with a smaller tilt angle, reducing the difficulty of initial insertion. As assembly progresses, the secondary guide plate 42 with a larger tilt angle further precisely corrects the assembly direction, guiding the outer panel to the preset installation position. This gradient guidance improves positioning accuracy, effectively reducing the risk of slot deformation or damage due to alignment deviation during installation, improving assembly efficiency, and simultaneously enhancing the structural strength of the primary guide plate 41, preventing wear on the primary guide plate 41 during disassembly and assembly.

[0046] Example 3

[0047] Referring to Figures 3 and 4, a first mounting plate 5 recessed towards the inner mounting surface is provided on the upper edge mounting bracket 2. A positioning mounting post 51 is provided on the side of the first mounting plate 5 facing the inner mounting surface. The positioning mounting post 51 has a positioning mounting hole 52 along its own axis. The number of positioning mounting posts 51 can be determined according to the actual size and the mechanical distribution of the structure. In this embodiment, four positioning mounting posts 51 are provided. The positioning mounting posts 51 are spaced apart on the top of the upper edge mounting bracket 2 and are located on the same straight line.

[0048] The first mounting plate 5 has a strip hole for installing fastening bolts. By recessing it inward on one side of the mounting surface, it is easier to fit against the wall of the vehicle's mounting point and thus be fixed by bolts. The shrinkage of the local structure optimizes the use of space and avoids interference with surrounding components.

[0049] The positioning mounting post 51 extends towards the inner mounting surface, and the positioning mounting hole 52 opened along its own axis is used for the fixed connection of the rear bumper outer panel. Therefore, the positioning mounting post 51 is set on the first mounting plate 5, thereby providing a stable mounting base for the positioning mounting post 51. The positioning mounting post 51 is first inserted into the positioning hole at the corresponding position of the vehicle to achieve pre-fixation, so that the positioning of the rear bumper body is more accurate. When installing the rear bumper outer panel, it is fixedly connected to the positioning mounting post 51 by bolts, thereby further strengthening the continuous force transmission structure of "rear bumper outer panel - rear bumper body - vehicle", directly transmitting the load-bearing capacity of the rear bumper outer panel and the external force it receives to the vehicle, making the entire structure more stable.

[0050] In some embodiments, a plurality of positioning ribs 53 are provided on the outer wall of the positioning mounting post 51. In this embodiment, four positioning ribs 53 are provided, and the four positioning ribs 53 are evenly spaced along the circumference of the positioning mounting post 51. The positioning ribs 53 extend along the axial direction of the mounting post and are integrally formed with the body of the positioning mounting post 51. This effectively improves the torsional performance and radial load-bearing capacity of the mounting post and avoids deformation or breakage of the plastic material due to stress concentration during bolt tightening. At the same time, the spacing space formed by the multiple positioning ribs 53 further improves the guiding accuracy during installation. During the installation process, by fitting against the inner wall of the corresponding positioning mounting hole 52, the assembly angle of the positioning mounting post 51 is quickly corrected, reducing wear of the positioning mounting hole 52 caused by misalignment. This also enhances the overall stability of the connection between the rear bumper body and the vehicle body, achieving the goal of lightweighting while meeting the dual requirements of structural strength and assembly accuracy.

[0051] In some embodiments, the lower edge mounting bracket 3 is provided with a first mounting plate 5 recessed to one side of the inward mounting surface and a second mounting plate protruding to one side of the outward mounting surface, wherein the first mounting plate 5 is used to connect with the vehicle and the second mounting plate is used to connect with the outer panel of the rear bumper.

[0052] Example 4

[0053] Referring to Figures 5 and 6, multiple positioning grooves 33 are formed on the sidewall of the lower edge mounting bracket 3 and / or the second connecting rib 31 facing the inner mounting surface. These positioning grooves 33 are evenly spaced. In this embodiment, the positioning grooves 33 are longitudinally arranged and simultaneously formed on the lower edge mounting bracket 3 and the second connecting rib 31. The cross-sectional shape of the bottom of the positioning groove 33 is the same as that on the lower edge mounting bracket 3 and the second connecting rib 31, ensuring that the depth of each position of the positioning groove 33 is the same. The bottom and edge of the positioning groove 33 are chamfered. Simultaneously, the vehicle to be installed has protrusions that match its shape. The specific position and number of positioning grooves 33 are determined based on the protrusions on the vehicle to be installed. During installation, by precisely fitting the positioning grooves 33 with the corresponding protrusions on the vehicle body, the lateral stability of the entire structure is effectively limited, further reducing assembly errors. Simultaneously, the structure of the positioning grooves 33 provides a certain degree of reinforcement to the sidewall, improving local resistance to deformation without increasing wall thickness and reducing the risk of structural damage during installation or collision.

[0054] In some embodiments, the upper edge mounting bracket 2 has a plurality of mounting blocks 23 for mounting the rear bumper outer panel on the side facing the outward mounting surface. The positioning block is recessed inward on the side facing the inward mounting surface and has a mounting groove 24. The plurality of mounting blocks 23 are spaced apart in the top area of ​​the upper edge mounting bracket 2. Similar to the positioning groove 33, the rear bumper outer panel to be installed has a groove adapted to its shape. The specific position and number of mounting blocks 23 are determined according to the groove on the rear bumper outer panel to be installed. During installation, by making the mounting blocks 23 and the groove on the rear bumper outer panel fit precisely, the lateral stability of the entire structure is effectively limited, the assembly error is further reduced, and the installation loss caused by component misalignment is reduced.

[0055] The inwardly recessed mounting groove 24 on the side of the positioning block facing the inner mounting surface forms a compact structure of "external positioning and internal groove" without affecting the positioning function of the positioning block. At the same time, the vehicle to be installed has a protrusion that matches the shape of the mounting groove 24. During installation, the mounting groove 24 and the corresponding protrusion on the vehicle body are precisely engaged, thereby further strengthening the continuous force transmission structure of "rear bumper outer panel - rear bumper body - vehicle", further enhancing the stability of the entire structure. At the same time, the upper edge mounting bracket 2 achieves a stable connection with the outer panel while taking into account the structural lightweight and ease of assembly.

[0056] Example 5

[0057] Referring to Figure 6, multiple reinforcing ribs 34 are provided between the lower edge mounting bracket 3 and the second connecting rib 31 on the side of the lower edge mounting bracket 3 facing the outer mounting surface. One end of the reinforcing rib 34 is integrally connected to the lower edge mounting bracket 3, and the other end is integrally connected to the second connecting rib 31. This achieves the effect of dispersing the external force borne by the lower edge mounting bracket 3 to the second connecting rib 31, avoiding deformation or breakage of plastic parts caused by local stress concentration, and enhancing the impact resistance of the bending area at the bottom of the main body 1. At the same time, the spaced distribution of multiple reinforcing ribs 34 reduces the amount of material used compared to an overall solid structure, and while strengthening the structure, it also takes into account the convenience of installation and the lightweight requirements of the whole vehicle.

[0058] The rear bumper body provided in this application forms a circumferential positioning connection structure by setting an upper edge mounting bracket 2 and a lower edge mounting bracket 3 along the edge. The first connecting rib 21 and the second connecting rib 31 protrude inward to the mounting surface to improve the connection strength between the mounting bracket and the main body 1. This not only enhances the load-bearing capacity of the bottom bending area, but also achieves the lightweight design goal through the reasonable distribution of the structure. At the same time, the first and second positioning blocks 32 face outward along the vertical edge direction of the main body 1, which can form a precise circumferential pre-position with the corresponding parts, reducing the alignment deviation during disassembly and assembly, and reducing the risk of wear and tear on the locking and positioning mounting holes 52 caused by repeated adjustments. There is no need for repeated disassembly and adjustment. At the same time, during disassembly and assembly, the contact surface facing outward of the main body 1 forms a circumferential inward locking effect, which provides prestress to the rear bumper body and improves its stability after installation. This ensures both assembly efficiency and connection stability.

[0059] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A rear bumper body, characterized in that, include: The main body (1) has one side as an inner mounting surface and the other side as an outer mounting surface. Both ends of the main body (1) are bent toward the inner mounting surface, and the bottom of the main body (1) is bent toward the inner mounting surface. The upper edge mounting bracket (2) is provided along the edge of the top of the main body (1) for connecting with other components. A first connecting rib (21) protruding inward to the mounting surface is provided between the upper edge mounting bracket (2) and the main body (1). A plurality of first positioning blocks (22) are provided on the first connecting rib (21). A lower edge mounting bracket (3) is provided along the bottom edge of the main body (1) for connection with other components. A second connecting rib (31) protruding inward from the mounting surface is provided between the lower edge mounting bracket (3) and the main body (1). A plurality of second positioning blocks (32) are provided on the second connecting rib (31). The top surfaces of the first positioning block (22) and the second positioning block (32) are both directed toward the outside of the main body (1) in a direction perpendicular to their own edges. The upper edge mounting bracket (2) and the lower edge mounting bracket (3) are provided with multiple bolt holes for connecting the vehicle and the rear bumper outer panel.

2. The rear bumper body according to claim 1, characterized in that, Both the first connecting rib (21) and the second connecting rib (31) are provided with a plurality of mounting bases (4) for installing the rear bumper outer panel. The mounting base (4) is recessed to the side of the inward mounting surface and is provided with a mounting slot (43).

3. The rear bumper body according to claim 2, characterized in that, The mounting slot (43) has a first-level guide plate (41) that is inclined toward the side of the main body (1) on the side wall opposite to the main body (1). The first positioning block (22) and the second positioning block (32) are both located on the back of the corresponding first-level guide plate (41).

4. The rear bumper body according to claim 3, characterized in that, A secondary guide plate (42) is provided on the inclined surface of the primary guide plate (41). The inclination direction of the secondary guide plate (42) relative to the main body (1) is the same as that of the primary guide plate (41), and the inclination angle is greater than that of the primary guide plate (41).

5. The rear bumper body according to claim 1, characterized in that, The upper edge mounting bracket (2) is provided with a first mounting plate (5) recessed to the side of the inner mounting surface. The first mounting plate (5) is provided with a positioning mounting post (51) on the side of the inner mounting surface. The positioning mounting post (51) is provided with a positioning mounting hole (52) along its own axis.

6. The rear bumper body according to claim 5, characterized in that, The outer wall of the mounting column is provided with multiple positioning ribs (53).

7. The rear bumper body according to claim 1, characterized in that, The lower edge mounting bracket (3) and / or the second connecting rib (31) have multiple positioning grooves (33) on the side wall facing the inner mounting surface.

8. The rear bumper body according to claim 1, characterized in that, The upper edge mounting bracket (2) has multiple mounting blocks (23) for installing the rear bumper outer panel on the side facing the outer mounting surface, and the positioning block has an inward recessed mounting groove (24) on the side facing the inner mounting surface.

9. The rear bumper body according to claim 1, characterized in that, Multiple reinforcing ribs (34) are provided between the lower edge mounting bracket (3) and the second connecting rib (31) on the side of the lower edge mounting bracket (3) facing the outer mounting surface.

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