Rear bumper beam tow hook reinforcing structure and automobile
By designing a three-layer enclosed buffer cavity structure in the rear bumper beam trailer hook structure, the problem of insufficient structural stability and strength of the trailer hook structure in a compact car is solved, and a tow hook reinforcement structure with high load capacity and stability is achieved.
Patent Information
- Application Number
- CN202421480804.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing rear bumper cross-beam trailer hook structure is difficult to arrange a larger reinforcement structure under the compact car shape, resulting in insufficient structural stability and strength, which can easily lead to uneven stress, damage or falling off of the trailer hook.
A rear bumper cross beam tow hook reinforcement structure is designed, and a three-layer closed buffer cavity structure is formed by welding the tow hook casing and the tow hook casing reinforcement plate, rear bumper cross beam, buffer shell, and bumper cross beam fixed support to form a three-layer closed buffer cavity structure to enhance the bearing capacity and stability of the structure.
The structure has a small space occupancy, compact structure, large load capacity, high strength and stability. It is suitable for rear bumper beam structures of different models, and has low production costs.
Smart Images
Figure CN222663102U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile bumpers, and in particular relates to a rear bumper cross beam trailer hook reinforcement structure and an automobile. Background Art
[0002] The main function of the trailer hook is to tow the vehicle. It can be installed at the front or rear of the vehicle, depending on the usage scenario. The trailer hook is usually installed on SUVs, off-road vehicles, pickup trucks, trucks and other models to tow trailers, motorboat trailers, storage boxes and other trailer equipment. It can also be used to tow and assist other vehicles out of trouble. When a car breaks down or gets stuck in sand and mud and cannot move on its own, the trailer hook on the car is needed to tow the car out of danger; at the same time, the trailer hook on the vehicle can also be used to rescue other vehicles in danger. The stability and strength of the trailer hook-related structure determine the reliability and safety of rescue and escape. A poor fixing structure can easily cause uneven force on the trailer hook and cause damage. In severe cases, it will cause the trailer hook to fall off and crack, which will cause danger to the vehicle and the rescue vehicle and cause the accident to happen again. The advancement of automobile styling has made the rear bumper trailer hook structure compact and difficult to arrange a large reinforcement structure. Most of the existing reinforcement structures occupy a large space, have a complex structure, and are not suitable for the rear bumper beam structure of all models. Corresponding design solutions are needed to solve this problem. Utility Model Content
[0003] The utility model aims to provide a rear bumper beam trailer hook reinforcement structure and a car, wherein a trailer hook sleeve is penetrated and welded in the middle of a three-layer closed buffer cavity structure formed by welding and fixing a trailer hook sleeve reinforcement plate, a rear bumper beam, a buffer shell, and a bumper beam fixing support, and the trailer hook reinforcement structure occupies a small space, has a compact structure, a large bearing capacity, and high strength and stability; it is suitable for rear bumper beam structures of different models; and the production cost is low.
[0004] The specific contents of the plan are as follows:
[0005] A rear bumper beam trailer hook reinforcement structure includes a trailer hook reinforcement subassembly and a trailer hook sleeve, the trailer hook reinforcement subassembly includes a trailer hook sleeve reinforcement plate and a buffer shell, the trailer hook sleeve reinforcement plate is a U-shaped structure, the buffer shell is a square stool structure, the trailer hook sleeve reinforcement plate is matched and adjacent to the buffer shell, the front end of the trailer hook sleeve is provided with an internal thread and is penetrated through the trailer hook sleeve reinforcement plate and the middle of the buffer shell, and the two ends of the trailer hook sleeve are exposed outside the front end surface of the trailer hook sleeve reinforcement plate and the rear end surface of the buffer shell.
[0006] The rear bumper beam trailer hook reinforcement structure of the utility model includes a trailer hook reinforcement sub-assembly and a trailer hook sleeve. The trailer hook reinforcement sub-assembly includes a trailer hook sleeve reinforcement plate and a buffer shell. The trailer hook sleeve reinforcement plate, the rear bumper beam, the buffer shell and the rear bumper beam fixing support are welded and fixed in sequence from front to back to form a three-layer reinforcement structure. The rear bumper beam, the buffer shell and the rear bumper beam form a buffer cavity. The front end of the trailer hook sleeve is provided with an internal thread and is penetrated through the trailer hook sleeve reinforcement plate and the middle of the buffer shell, and its two ends are exposed outside the front end surface of the trailer hook sleeve reinforcement plate and the rear end surface of the buffer shell. The three-layer reinforcement structure and the buffer cavity work together to greatly enhance the bearing capacity of the rear bumper beam trailer hook structure. In addition, the trailer hook reinforcement structure of the utility model has a compact structure, occupies a small space, and can be less than 50mm in depth. Compared with the existing trailer hook reinforcement structure, it is applicable to a wider range of vehicle models, especially for vehicles where the rear bumper trailer hook structure is too small to be arranged due to the shape of the car.
[0007] Furthermore, the upper and lower ends of the towing hook sleeve reinforcement plate are respectively provided with backward folded edges to form a U-shaped structure, and the middle of the towing hook sleeve reinforcement plate is provided with a first mounting hole. The towing hook sleeve is penetrated and welded in the first mounting hole and its two ends are exposed outside the first mounting hole.
[0008] The upper and lower ends of the towing hook sleeve reinforcement plate are provided with backward folded edges to form a U-shaped structure. The shape and size of the towing hook sleeve reinforcement plate match the shape and size of the rear bumper cross beam. The rear end face of the towing hook sleeve reinforcement plate is welded to the front end face of the rear bumper cross beam. The middle part of the towing hook sleeve reinforcement plate is provided with a first mounting hole. The towing hook sleeve is penetrated and welded in the first mounting hole and its two ends are exposed outside the first mounting hole. The towing hook sleeve reinforcement plate is a U-shaped structure so that it can match the shape of the rear bumper cross beam and be welded to each other to form a three-part closed reinforcement structure to increase the bearing capacity of the towing hook structure, so that the towing hook structure will not be broken during towing, and damage to personnel and vehicles is avoided.
[0009] Furthermore, the buffer shell includes a rectangular panel and four support plates. Corresponding support plates are arranged backward on the four sides of the rectangular panel to form a square stool structure. The ends of the four support plates are provided with support plate folded edges parallel to the rectangular panel. A third mounting hole is provided in the middle of the rectangular panel. The tow hook sleeve is passed through the third mounting hole and both ends thereof are exposed outside the third mounting hole.
[0010] The four support plates of the buffer shell are respectively arranged on the four sides of the rectangular panel to form a shell structure similar to a cube. The rectangular panel and support plates of the buffer shell are tightly welded to the rear end surface of the rear bumper beam. The support plate folding edges of the four support plates are respectively welded to the front end surface of the rear bumper beam fixing support. The buffer shell is accommodated between the rear bumper beam and the rear bumper beam fixing support. The buffer shell and the rear bumper beam fixing support form a buffer cavity. The buffer cavity can play a buffering role, further enhance the bearing capacity of the rear bumper beam trailer hook reinforcement structure, and ensure the personal and property safety of passengers when using the trailer hook. A third mounting hole is provided in the middle of the rectangular panel, and the tow hook sleeve is penetrated and welded in the third mounting hole, and both ends thereof are exposed outside the third mounting hole.
[0011] Furthermore, reinforcing ribs are provided on the towing hook sleeve reinforcement plate and the buffer shell.
[0012] There are reinforcing ribs on the towing hook sleeve reinforcement plate and the buffer shell, which can increase the strength of the towing hook sleeve reinforcement plate and the buffer shell.
[0013] Furthermore, it also includes a rear bumper cross beam and a rear bumper cross beam fixing support. The rear bumper cross beam is clamped and welded between the tow hook sleeve reinforcement plate and the buffer shell. The support plate folded edge of the buffer shell is welded to the front end surface of the rear bumper cross beam fixing support. The buffer shell, the rear bumper cross beam fixing support and the tow hook sleeve together form an annular buffer cavity. The rear end surface of the rear bumper cross beam on the left side of the buffer shell is welded and fixed to the end surface at the corresponding position of the rear bumper cross beam fixing support. The buffer shell is accommodated between the rear bumper cross beam and the rear bumper cross beam fixing support.
[0014] The shape and size of the hook sleeve reinforcement plate match those of the rear bumper beam, and the hook sleeve reinforcement plate is welded to the front end face of the rear bumper beam. The shape and size of the buffer shell also match those of the rear bumper beam, and the bumper beam is matched and welded to the front end face of the buffer shell. The support plate fold of the buffer shell is welded to the front end face of the rear bumper beam fixing support and forms a buffer cavity. The rear bumper beam is not a straight structure. The end portion of the rear bumper beam connected to the reinforcement structure is bent forward and welded to the end face at the corresponding position of the rear bumper beam fixing support to form a receiving cavity, and the buffer shell is accommodated in this receiving cavity.
[0015] Furthermore, a second mounting hole is provided in the middle of the rear bumper cross beam, and the towing hook sleeve is sleeved in the second mounting hole with both ends thereof exposed outside the second mounting hole.
[0016] A second mounting hole is provided in the middle of the rear bumper cross beam, and the towing hook sleeve is inserted into the second mounting hole and its two ends are exposed outside the second mounting hole. The second mounting hole is a through hole, and its diameter is larger than the outer diameter of the towing hook sleeve. The towing hook sleeve only passes through the second mounting hole but is not welded thereto. Because the rear bumper cross beam is too thin and is easily damaged when pulled, the second mounting hole and the towing hook sleeve are not welded together, which can improve the strength and stability of the reinforced structure.
[0017] Furthermore, a reinforcing seat with a truncated cone-shaped structure protruding from the front end surface of the rear bumper cross beam fixing support is provided in the middle part of the rear bumper cross beam fixing support, and the reinforcing seat is located at the center position of the folded edges of the four support plates. A fourth mounting hole is provided at the center of the reinforcing seat, and the towing hook sleeve is passed through and welded in the fourth mounting hole with both ends thereof exposed outside the fourth mounting hole.
[0018] The fourth mounting hole on the rear bumper beam fixing support is set at the center point of the upper end of the reinforcement seat. The reinforcement seat is a truncated cone-shaped structure raised on the front end surface of the rear bumper beam fixing support. Its main function is to strengthen the connection between the towing hook sleeve and the rear bumper beam fixing support and increase the bearing capacity of the towing hook structure. The reinforcement seat is set at the center of the four support plates of the strong buffer shell. The towing hook sleeve is penetrated and welded in the fourth mounting hole and its two ends are exposed outside the fourth mounting hole.
[0019] Furthermore, the diameter of the second mounting hole is larger than the outer diameter of the towing hook sleeve.
[0020] The purpose of the second mounting hole having a diameter larger than the outer diameter of the towing hook sleeve is to make the second mounting hole and the towing hook sleeve fit in a clearance manner. Since the rear bumper beam is relatively thin and has poor strength, this can prevent the rear bumper beam from being broken by the towing hook and better play the buffering role of the buffer shell. The first mounting hole, the third mounting hole, and the fourth mounting hole are welded and fixed to the towing hook sleeve.
[0021] The first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole are respectively provided at corresponding positions in the middle of the front end surface of the towing hook sleeve reinforcement plate, the rear bumper beam, the buffer shell and the rear bumper beam fixing support. The towing hook sleeve is inserted into the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole from front to back in sequence, and is welded and fixed with the first mounting hole and the fourth mounting hole. Because the thickness of the rear bumper beam is small and the overall structure is thin, the towing hook sleeve is not welded with the second mounting hole, which can better protect the rear bumper beam and avoid the rear bumper beam from breaking due to poor bearing capacity. The third mounting hole is also a through hole, which is not welded with the towing hook sleeve and can more effectively play a buffering role.
[0022] An automobile comprises a body-in-white and a rear bumper beam trailer hook reinforcement structure, wherein the rear bumper beam trailer hook reinforcement structure is threadedly fixedly connected to the body-in-white.
[0023] Furthermore, the rear bumper beam fixing support also includes a pre-hanging hole for installation, and pre-hanging bolts are welded on corresponding positions of the body-in-white. The rear bumper beam fixing support and the body-in-white are fixedly connected by screwing the pre-hanging holes and the pre-hanging bolts.
[0024] The white body of the car is welded with pre-hanging bolts, and the rear bumper beam fixing support is provided with installation pre-hanging holes, and the positions of the two correspond to each other. The rear bumper beam fixing support of the rear bumper beam trailer hook reinforcement structure is fixed by screwing the installation pre-hanging holes and the pre-hanging bolts.
[0025] Compared with the prior art, the utility model has the following beneficial effects:
[0026] 1. The rear bumper beam trailer hook reinforcement structure of the utility model forms a three-layer closed buffer cavity structure by welding the trailer hook sleeve and the trailer hook sleeve reinforcement plate, the rear bumper beam, the buffer shell, and the bumper beam fixing support, and the structural bearing capacity is large;
[0027] 2. The rear bumper beam trailer hook reinforcement structure of the utility model has a compact structure and occupies little space, which can meet the need of arranging a large reinforcement structure when the rear bumper trailer hook structure has too little space to be arranged due to the shape of the car;
[0028] 3. The rear bumper beam trailer hook reinforcement structure proposed in the utility model can achieve the purpose of being suitable for rear bumper beam structures of different models by adjusting the size of each component and the position of the installation pre-hanging holes of the rear bumper beam fixing support. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 This is the overall structural diagram of the rear bumper beam trailer hook reinforcement structure of the utility model;
[0030] Figure 2 This is an exploded view of the rear bumper beam trailer hook reinforcement structure of the utility model;
[0031] Figure 3 It is a front view of the rear bumper beam trailer hook reinforcement structure of the utility model;
[0032] Figure 4 It is a schematic diagram of the AA section of the utility model;
[0033] Figure 5 This is a schematic diagram of the vehicle body installation position of the rear bumper cross beam trailer hook reinforcement structure of the utility model.
[0034] In the figure:
[0035] 1. Trailer hook reinforcement sub-assembly; 11. Trailer hook sleeve reinforcement plate; 111. First mounting hole; 12.
[0036] Buffer shell; 121. Rectangular panel; 122. Support plate; 1221. Support plate folding edge; 123.
[0037] The third mounting hole; 2. Tow hook sleeve; 3. Rear bumper beam; 31. The second mounting hole; 4. Rear bumper beam fixing support; 41. Reinforcement seat; 42. The fourth mounting hole; 5. Buffer cavity; 6. Body in white; 7. Pre-hanging hole for installation; 8. Pre-hanging bolt. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0039] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.
[0040] It should be noted that the directions or positional relationships indicated by the terms "front", "rear", "inside" and "outside" in the present invention are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0041] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.
[0042] The embodiment provided by the utility model, that is, an embodiment of a rear bumper beam trailer hook reinforcement structure and a vehicle, is described below in combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Provide detailed explanation.
[0043] Embodiment 1:
[0044] See Figure 1 , Figure 2 , Figure 3As shown, a rear bumper beam trailer hook reinforcement structure is characterized in that it includes a trailer hook reinforcement subassembly 1 and a trailer hook sleeve 2, the trailer hook reinforcement subassembly 1 includes a trailer hook sleeve reinforcement plate 11 and a buffer shell 12, the trailer hook sleeve reinforcement plate 11 is a U-shaped structure, the buffer shell 12 is a square stool structure, the trailer hook sleeve reinforcement plate 11 is matched and adjacent to the buffer shell 12, the front end of the trailer hook sleeve 2 is provided with an internal thread and is penetrated through the middle of the trailer hook sleeve reinforcement plate 11 and the buffer shell 12, and the two ends of the trailer hook sleeve 2 are exposed outside the front end surface of the trailer hook sleeve reinforcement plate 11 and the rear end surface of the buffer shell 12.
[0045] The upper and lower ends of the towing hook sleeve reinforcement plate 11 are respectively provided with backward folded edges to form a U-shaped structure. The middle of the towing hook sleeve reinforcement plate 11 is provided with a first mounting hole 111. The towing hook sleeve 2 is penetrated and welded in the first mounting hole 111 and its two ends are exposed outside the first mounting hole 111.
[0046] The buffer shell 12 includes a rectangular panel 121 and four support plates 122. Corresponding support plates 122 are arranged backward on the four sides of the rectangular panel 121 to form a square stool structure. The ends of the four support plates 122 are provided with support plate folded edges 1221 parallel to the rectangular panel 121. A third mounting hole 123 is provided in the middle of the rectangular panel 121. The towing hook sleeve 2 is penetrated and welded in the third mounting hole 123 and its two ends are exposed outside the third mounting hole 123.
[0047] The towing hook sleeve reinforcement plate 11 and the buffer shell 12 are both provided with reinforcement ribs.
[0048] See Figure 4 As shown, it also includes a rear bumper beam 3 and a rear bumper beam fixing support 4, the rear bumper beam 3 is clamped and welded between the tow hook sleeve reinforcement plate 11 and the buffer shell 12, the support plate folded edge 1221 of the buffer shell 12 is welded to the front end surface of the rear bumper beam fixing support 4, the buffer shell 12, the rear bumper beam fixing support 4 and the tow hook sleeve 2 together form an annular buffer cavity 5, the rear end surface of the rear bumper beam 3 on the left side of the buffer shell 12 is welded and fixed to the end surface of the rear bumper beam fixing support 4 at the corresponding position, and the buffer shell 12 is clamped and fixed between the rear bumper beam 3 and the rear bumper beam fixing support 4.
[0049] A second mounting hole 31 is provided in the middle of the rear bumper cross beam 3 , and the towing hook sleeve 2 is sleeved in the second mounting hole 31 with both ends thereof exposed outside the second mounting hole 31 .
[0050] A reinforcing seat 41 of a truncated cone-shaped structure is provided in the middle of the rear bumper beam fixing support 4 and protrudes outward from the front end surface of the rear bumper beam fixing support 4. The reinforcing seat 41 is located at the center position of the four support plate folding edges 1221. A fourth mounting hole 42 is provided at the center of the reinforcing seat 41. The towing hook sleeve 2 is penetrated and welded in the fourth mounting hole 42 and both ends thereof are exposed outside the fourth mounting hole 42.
[0051] The diameter of the second mounting hole 31 is greater than the outer diameter of the towing hook sleeve 2 .
[0052] Embodiment 2:
[0053] See Figure 5 As shown, the utility model also provides an automobile, including a body-in-white 6, and also including the rear bumper beam trailer hook reinforcement structure, wherein the rear bumper beam trailer hook reinforcement structure is threadedly fixedly connected to the body-in-white 6.
[0054] The rear bumper beam fixing support 4 also includes a pre-hanging hole 7 for installing, and a pre-hanging bolt 8 is welded on the corresponding position of the body-in-white 6. The rear bumper beam fixing support 4 and the body-in-white 6 are screwed and fixedly connected by the pre-hanging hole 7 and the pre-hanging bolt 8.
[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A rear bumper beam trailer hook reinforcement structure, characterized in that: The invention comprises a trailer hook reinforcement subassembly (1) and a trailer hook sleeve (2), wherein the trailer hook reinforcement subassembly (1) comprises a trailer hook sleeve reinforcement plate (11) and a buffer shell (12), wherein the trailer hook sleeve reinforcement plate (11) is a U-shaped structure, and the buffer shell (12) is a square stool structure, wherein the trailer hook sleeve reinforcement plate (11) matches and is adjacent to the buffer shell (12), wherein the front end of the trailer hook sleeve (2) is provided with an internal thread and is penetrated through the middle of the trailer hook sleeve reinforcement plate (11) and the buffer shell (12), and wherein the two ends of the trailer hook sleeve (2) are exposed outside the front end surface of the trailer hook sleeve reinforcement plate (11) and the rear end surface of the buffer shell (12).
2. The rear bumper beam trailer hook reinforcement structure according to claim 1, characterized in that: The upper and lower ends of the towing hook sleeve reinforcement plate (11) are respectively provided with backward folded edges to form a U-shaped structure, and the middle part of the towing hook sleeve reinforcement plate (11) is provided with a first mounting hole (111), and the towing hook sleeve (2) is penetrated and welded in the first mounting hole (111) and its two ends are exposed outside the first mounting hole (111).
3. The rear bumper beam trailer hook reinforcement structure according to claim 2, characterized in that: The buffer shell (12) comprises a rectangular panel (121) and four support plates (122); corresponding support plates (122) are arranged backward on the four sides of the rectangular panel (121) to form a square stool structure; the ends of the four support plates (122) are provided with support plate folding edges (1221) parallel to the rectangular panel (121); a third mounting hole (123) is provided in the middle of the rectangular panel (121); the towing hook sleeve (2) is penetrated and welded in the third mounting hole (123) and both ends thereof are exposed outside the third mounting hole (123).
4. The rear bumper beam trailer hook reinforcement structure according to claim 3, characterized in that: The towing hook sleeve reinforcement plate (11) and the buffer shell (12) are both provided with reinforcement ribs.
5. The rear bumper beam trailer hook reinforcement structure according to claim 4, characterized in that: The invention also comprises a rear bumper cross beam (3) and a rear bumper cross beam fixing support (4); the rear bumper cross beam (3) is clamped and welded between the towing hook sleeve reinforcement plate (11) and the buffer shell (12); the support plate folding edge (1221) of the buffer shell (12) is welded to the front end surface of the rear bumper cross beam fixing support (4); the buffer shell (12), the rear bumper cross beam fixing support (4) and the towing hook sleeve (2) together form an annular buffer cavity (5); the rear end surface of the rear bumper cross beam (3) on the left side of the buffer shell (12) is welded and fixed to the end surface of the rear bumper cross beam fixing support (4) at a corresponding position; the buffer shell (12) is clamped and fixed between the rear bumper cross beam (3) and the rear bumper cross beam fixing support (4).
6. The rear bumper beam trailer hook reinforcement structure according to claim 5, characterized in that: A second mounting hole (31) is provided in the middle of the rear bumper cross beam (3), and the towing hook sleeve (2) is sleeved in the second mounting hole (31) with both ends thereof exposed outside the second mounting hole (31).
7. The rear bumper beam trailer hook reinforcement structure according to claim 6, characterized in that: A reinforcing seat (41) of a truncated cone-shaped structure protruding from the front end surface of the rear bumper cross beam fixing support (4) is provided in the middle of the rear bumper cross beam fixing support (4); the reinforcing seat (41) is located at the center of the four support plate folding edges (1221); a fourth mounting hole (42) is provided at the center of the reinforcing seat (41); a towing hook sleeve (2) is penetrated and welded in the fourth mounting hole (42) and both ends thereof are exposed outside the fourth mounting hole (42).
8. The rear bumper beam trailer hook reinforcement structure according to claim 7, characterized in that: The diameter of the second mounting hole (31) is greater than the outer diameter of the towing hook sleeve (2).
9. A car, characterized in that: It comprises a body in white (6), and also comprises a rear bumper beam trailer hook reinforcement structure as claimed in any one of claims 1 to 8, wherein the rear bumper beam trailer hook reinforcement structure is threadedly fixedly connected to the body in white (6).
10. The automobile according to claim 9, characterized in that: The rear bumper cross beam fixing support (4) also includes a pre-hanging installation hole (7), and a pre-hanging bolt (8) is welded at a corresponding position of the body-in-white (6). The rear bumper cross beam fixing support (4) and the body-in-white (6) are screwed and fixedly connected by the pre-hanging installation hole (7) and the pre-hanging bolt (8).