Split type front bumper mounting structure

Abstract

The invention belongs to the technical field of automobile bumpers, and provides a split type front bumper mounting structure which comprises an automobile body front end frame, a front bumper upper assembly, a front bumper lower assembly and a headlamp assembly. The front bumper upper grille and the front bumper lower assembly are designed to be detachably connected and are matched to form a Z-direction positioning structure, and the assembling gap of the front bumper upper grille and the front bumper lower assembly in the Z direction can be accurately controlled; meanwhile, due to the detachable connection mode, the front bumper upper grille and the front bumper lower assembly are more convenient to disassemble and assemble, and convenience is provided for follow-up maintenance; the groove structure is arranged on the front bumper upper grille, the boss structure is arranged on the front bumper lower body, and after the groove structure and the boss structure are clamped, a stable restraining structure can be formed in the Y direction of a vehicle body, the Y-direction gap between the front bumper upper assembly and the front bumper lower assembly is effectively controlled, and then the left-right symmetry of the appearance of the whole vehicle is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of automotive bumper technology, and specifically relates to a split-type front bumper mounting structure. Background Technology In the field of automotive bumper technology, one-piece front bumpers are widely used in ordinary family cars due to their mature application. Even if some models' front bumpers are structurally divided into upper and lower assemblies, actual assembly still requires pre-assembling the upper and lower assemblies into a complete front bumper assembly before installing the assembly as a whole onto the vehicle body. This assembly method has significant drawbacks for one-piece front bumpers: firstly, their large size and numerous mounting points prevent quick disassembly, resulting in low assembly and disassembly efficiency; secondly, when driving on complex off-road conditions, one-piece bumpers cannot increase the vehicle's approach angle through partial disassembly, thus limiting off-road capability. Furthermore, the lower front bumper assembly, due to its low mounting position, is easily damaged in collisions and scrapes, and one-piece bumpers require replacement of the entire assembly for repair, significantly increasing maintenance costs. While existing split-type front bumpers have solved some of the problems of integrated structures, they still have two key technical deficiencies: First, the upper and lower assemblies lack a related positioning structure in the Z-direction (height direction) of the vehicle body, making it difficult to accurately control the assembly gap in the vertical direction and resulting in poor gap consistency; Second, the upper and lower assemblies also lack a related constraint structure in the Y-direction (width direction) of the vehicle body, making it impossible to guarantee the gap in the left and right directions, affecting the left and right symmetry of the overall vehicle appearance. Summary of the Invention

[0002] To address the problems in the background art, this invention proposes a split-type front bumper mounting structure.

[0003] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a split-type front bumper mounting structure, comprising: Front end frame of the vehicle body; The upper front bumper assembly includes an upper front bumper body and an upper front bumper grille. The upper front bumper body is located on top of the upper front bumper grille. The upper front bumper body is detachably connected to the front end frame of the vehicle body. The upper front bumper grille is used to control the position of the upper front bumper assembly along the X-direction of the vehicle body, where the X-direction of the vehicle body is the length direction of the vehicle body. The lower front bumper assembly is detachably connected to the front end frame of the vehicle along the X-direction of the vehicle body; and the lower front bumper assembly is detachably connected to the upper front bumper grille, which is used to limit the lower front bumper assembly along the Y-direction and Z-direction of the vehicle body; the Y-direction of the vehicle body is the width direction of the vehicle body. The headlight assembly is detachably connected to the front frame of the vehicle body and is mounted in the upper grille of the front bumper along the X direction of the vehicle body.

[0004] Furthermore, the top of the front bumper body is provided with a Y-direction positioning hole and first X-direction positioning holes symmetrically arranged on both sides of the Y-direction positioning hole; The upper body of the front bumper is detachably connected to the front frame of the vehicle body through a Y-axis positioning hole and a first X-axis positioning hole.

[0005] Furthermore, the upper front bumper body has first mounting holes at both ends, and the surface where the first mounting holes are located fits against the front frame of the vehicle body to limit the position of the upper front bumper assembly in the X direction of the vehicle body. The first mounting hole is located outside the first X-direction positioning hole to absorb tolerances.

[0006] Furthermore, the bottom of the upper front bumper grille is provided with symmetrical second mounting holes and symmetrical third mounting holes, the third mounting holes being located outside the second mounting holes; the surfaces containing the second and third mounting holes are fitted with the front end frame of the vehicle body, which is used to define the position of the upper front bumper assembly in the X direction of the vehicle body; The upper front bumper grille has a fourth mounting hole at both ends. The surface of the fourth mounting hole is in contact with the headlight assembly and is used to define the position of the upper front bumper assembly in the X direction of the vehicle body.

[0007] Furthermore, the structure containing the symmetrical second mounting holes is a groove structure; the groove structure engages with the lower front bumper assembly and is used to limit the lower front bumper assembly along the Y-direction of the vehicle body; The bottom of the upper grille of the front bumper is also provided with a symmetrical first Z-direction positioning hole. The first Z-direction positioning hole is located between the second mounting hole and the fourth mounting hole, and is used to limit the lower front bumper assembly along the Z direction of the vehicle body after cooperating with the lower front bumper assembly.

[0008] Furthermore, the front bumper lower assembly includes a front bumper lower body and a front bumper lower bracket, the front bumper lower bracket being mounted on the surface of the front bumper lower body facing the vehicle interior.

[0009] Furthermore, the top of the lower front bumper body is provided with a boss structure, which engages with a groove structure to limit the lower front bumper assembly along the Y-direction of the vehicle body.

[0010] Furthermore, the surface of the lower front bumper body is provided with symmetrical positioning pins, which are used to limit the lower front bumper assembly along the Z direction of the vehicle body after cooperating with the first Z-direction positioning hole.

[0011] Furthermore, the lower body of the front guard is also provided with a second X-direction positioning hole, a load-bearing surface, and a second Z-direction positioning hole; The second X-direction positioning hole is symmetrically installed on the top of the front bumper lower body, and is used for X-direction limiting after being connected to the front frame of the vehicle body; The load-bearing surface is symmetrically arranged on the surface of the lower body of the front guard for Z-axis limiting; The second Z-axis positioning hole is provided in several places and is located at the bottom of the front bumper lower body. It is used to limit the Z-axis position after being connected to the front frame of the vehicle body.

[0012] Furthermore, the surface of the front bumper lower bracket is provided with a fifth mounting hole, a sixth mounting hole, and a seventh mounting hole; The fifth, sixth, and seventh mounting holes are symmetrically distributed at both ends of the front bumper lower bracket, and are used to achieve X-axis positioning after assembly with the front frame of the vehicle body.

[0013] The beneficial effects of this invention are: 1. To address the problem of difficulty in controlling the Z-axis clearance of existing split front bumpers, this invention designs the upper front bumper grille and the lower front bumper assembly as a detachable connection, and the two work together to form a Z-axis positioning structure, which can accurately control the assembly clearance of the two in the Z-axis; at the same time, this detachable connection method also makes the disassembly and assembly of the upper front bumper grille and the lower front bumper assembly more convenient, providing convenience for subsequent maintenance. 2. To address the problems of difficulty in ensuring the Y-direction clearance and poor appearance symmetry of existing split front bumpers, this invention sets a groove structure in the upper grille of the front bumper and a boss structure in the lower body of the front bumper. After the two are engaged, a stable constraint structure can be formed in the Y direction of the vehicle body, effectively controlling the Y-direction clearance between the upper and lower assemblies of the front bumper, thereby ensuring the left-right symmetry of the overall vehicle appearance.

[0014] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a split-type front bumper mounting structure according to the present invention is shown; Figure 2a A front view of the front bumper assembly of the present invention is shown; Figure 2b A top view of the front bumper upper assembly of the present invention is shown; Figure 2c It shows Figure 2b A magnified view of position A in the middle; Figure 3aA front view of the front lower guard assembly of the present invention is shown; Figure 3b It shows Figure 3a A bottom view; Figure 3c It shows Figure 3a A magnified view of position B in the middle; Figure 4a An assembly diagram of the upper front bumper assembly and the lower front bumper assembly is shown. Figure 4b It shows Figure 4a A magnified view of area C in the middle; Figure 5 It shows Figure 4b A cross-sectional view of the AA plane; Figure 6a The location diagram of the locating pin is shown; Figure 6b It shows Figure 6a A magnified view of region D in the middle.

[0017] In the diagram: 100, front end frame; 200, upper front bumper assembly; 210, upper front bumper body; 220, upper front bumper grille; 211, Y-axis positioning hole; 212, first X-axis positioning hole; 213, first mounting hole; 221, groove structure; 222, second mounting hole; 223, first Z-axis positioning hole; 224, third mounting hole; 225, fourth mounting hole; 300, lower front bumper assembly; 310, lower front bumper body; 320, lower front bumper bracket; 311, boss structure; 312, second X-axis positioning hole; 313, positioning pin; 314, load-bearing surface; 315, second Z-axis positioning hole; 321, fifth mounting hole; 322, sixth mounting hole; 323, seventh mounting hole; 400, headlight assembly. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1As shown, a split-type front bumper mounting structure includes a front vehicle frame 100, an upper front bumper assembly 200, a lower front bumper assembly 300, and a headlight assembly 400. The upper front bumper assembly 200, the lower front bumper assembly 300, and the headlight assembly 400 are all mounted on the front vehicle frame 100. The upper front bumper assembly 200 is assembled before the lower front bumper assembly 300 and provides an assembly positioning structure for the lower front bumper assembly 300. Furthermore, the upper front bumper assembly 200 only provides a positioning structure for the lower front bumper assembly 300 but does not provide a fastening mounting point, thus allowing for free installation and removal of the lower front bumper assembly 300.

[0020] Combination Figure 2a It can be seen that the upper front bumper assembly 200 includes the upper front bumper body 210 and the upper front bumper grille 220. The upper front bumper body 210 is located on top of the upper front bumper grille 220. The upper front bumper body 210 is detachably connected to the front end frame 100 of the vehicle body. The upper front bumper grille 220 is used to control the position of the upper front bumper assembly 200 along the X direction of the vehicle body. The X direction of the vehicle body is the length direction of the vehicle body.

[0021] Specifically, such as Figure 2c As shown, it is Figure 2b The enlarged layout diagram shows that the top of the upper front bumper assembly 210 has a Y-direction positioning hole 211 and two first X-direction positioning holes 212 symmetrically arranged on both sides of the Y-direction positioning hole 211. The upper front bumper assembly 210 is detachably connected to the front vehicle frame 100 through the Y-direction positioning hole 211 and the first X-direction positioning holes 212. This embodiment does not limit the specific shape of the positioning holes, but only provides an illustrative example: the Y-direction positioning hole 211 is designed to be waist-shaped, with its long side along the X direction (i.e., the length direction of the vehicle body) and its short side along the Y direction (i.e., the width direction of the vehicle body). After the Y-direction positioning hole 211 and the first X-direction positioning holes 212 are connected to the front vehicle frame 100 (such as by bolting or welding), the Y-direction (i.e., the height direction of the vehicle body) position of the upper front bumper assembly 200 on the vehicle body can be constrained. In addition, the first X-direction positioning hole 212 is also a waist hole, with two holes arranged symmetrically on the left and right. Its long side is in the Y direction and its short side is in the X direction. After it is connected with the front frame 100 of the vehicle body, it can constrain the X-direction position of the front bumper assembly 200 on the vehicle body.

[0022] exist Figure 2a In this embodiment, the upper front bumper assembly 200 has circular first mounting holes 213 at both ends. The surface where the first mounting holes 213 are located fits against the front frame 100 of the vehicle body, and is used to limit the position of the upper front bumper assembly 200 in the X direction of the vehicle body. This embodiment does not limit the number and shape of the first mounting holes 213. For example, there are two first mounting holes 213 arranged symmetrically on the left and right sides. They are circular and do not play a positioning role in the diameter direction. Their function is to absorb tolerances.

[0023] like Figure 2aAs shown, the bottom of the upper front bumper grille 220 has symmetrically distributed second mounting holes 222 and third mounting holes 224, with the third mounting hole 224 located outside the second mounting hole 222. The plane containing these mounting holes fits into the front frame 100 of the vehicle body, together defining the position of the upper front bumper assembly 200 in the X-direction (length direction) of the vehicle body. The two ends of the upper front bumper grille 220 have fourth mounting holes 225, the plane of which fits into the headlight assembly 400, also constraining the position of the upper front bumper assembly 200 in the X-direction of the vehicle body. Furthermore, the fourth mounting hole 225, when fitted with the headlight assembly 400, facilitates the control of the X-direction gap between the two, improving and ensuring the refinement of the appearance. In this embodiment, the second mounting hole 222, the third mounting hole 224, and the fourth mounting hole 225 are all circular; their diameter does not serve a positioning function but rather absorbs tolerances.

[0024] Furthermore, the structure containing the symmetrically arranged second mounting holes 222 is designed as a groove structure 221. This groove structure 221 forms a snap-fit ​​engagement with the lower front bumper assembly 300, and can limit the positioning of the lower front bumper assembly 300 along the Y-direction (width direction) of the vehicle body. This embodiment does not specifically limit the groove structure 221. For example, the groove structure 221 is an assembly positioning structure formed by two Y-direction planes. It engages with the boss structure 311 of the lower front bumper assembly 300, providing Y-direction assembly positioning for the lower front bumper assembly 300. Moreover, the size of the groove structure 221 is greater than or equal to the size of the boss structure 311, so that the two can form an assembly positioning. This Y-direction associated positioning facilitates the precision control of the symmetrical engagement feature, thereby improving the appearance refinement.

[0025] Furthermore, the bottom of the upper front bumper grille 220 is provided with symmetrical first Z-direction positioning holes 223, located between the second mounting hole 222 and the fourth mounting hole 225. When these first Z-direction positioning holes 223 mate with the lower front bumper assembly 300, they can limit the positioning of the lower front bumper assembly 300 along the Z-direction (height direction) of the vehicle body. This embodiment does not limit the specific structure of the first Z-direction positioning holes 223. For example, the first Z-direction positioning holes 223 are not mounting holes for the upper front bumper assembly 200 and the front frame 100 of the vehicle body, but rather provide mounting positioning for the lower front bumper assembly 300. Additionally, there are two symmetrically arranged first Z-direction positioning holes 223, shaped like an oblong waist, with the long side in the Y-direction and the short side in the Z-direction. They mate with the positioning pin 313 of the lower front bumper assembly 300, providing Z-direction assembly positioning for the lower front bumper assembly 300. This Z-direction correlation positioning facilitates precise control of the Z-direction mating gap between the two components, thereby improving the overall aesthetic appeal.

[0026] like Figure 3aAs shown, the lower front bumper assembly 300 is detachably connected to the front frame 100 of the vehicle body along the X direction (length direction); at the same time, the lower front bumper assembly 300 and the upper front grille 220 are also detachably connected. Through this connection, the lower front bumper assembly 300 can be limited along the Y direction (width direction) and Z direction (height direction) of the vehicle body.

[0027] Furthermore, the front lower bumper assembly 300 consists of a front lower bumper body 310 and a front lower bumper bracket 320, wherein the front lower bumper bracket 320 is mounted on the surface of the front lower bumper body 310 facing the vehicle interior. Together, they form a stable combined structure, providing a basis for subsequent connection and limiting functions with other components.

[0028] The top of the lower front bumper body 310 is provided with a boss structure 311, which engages with the groove structure 221 of the upper front bumper grille 220. This engagement allows for the limiting of the lower front bumper assembly 300 along the Y-axis (width direction) of the vehicle body; simultaneously, combined with Figure 4a It can be seen that the surface of the lower front bumper body 310 is also provided with symmetrically distributed positioning pins 313. After the positioning pins 313 cooperate with the first Z-direction positioning hole 223 of the upper front bumper grille 220, they can limit and constrain the lower front bumper assembly 300 along the Z-direction (height direction) of the vehicle body. This embodiment does not specifically limit the boss structure 311. For example, such as Figure 4b As shown, the boss structure 311 is an assembly positioning structure formed by two Y-planes. It cooperates with the groove structure 221 of the upper front bumper assembly 200 to achieve Y-axis positioning of the lower front bumper assembly 300. It should be noted that the front end of the boss structure 311 is chamfered to prevent assembly jamming.

[0029] like Figure 5 The diagram shows the engagement between the upper grille 220 and the lower body 310 of the front bumper, wherein the lower body 310 of the front bumper is engaged in the groove structure 221 by a boss structure 311.

[0030] like Figure 6a As shown, two locating pins 313 are symmetrically arranged on the left and right sides of the front bumper lower assembly 300. During assembly, they are inserted into the first Z-axis locating hole 223 of the front bumper upper assembly 200 to achieve Z-axis positioning of the front bumper lower assembly 300. Their assembly relationship is as follows: Figure 6b As shown, the first Z-axis positioning hole 223, being oblong, has a certain degree of freedom in the Y-axis. It should be noted that the positioning pin 313 is a tapered pin, the purpose of which is to ensure that the pin can be smoothly inserted into the first Z-axis positioning hole 223 during assembly.

[0031] In addition, the lower front bumper body 310 is also provided with a second X-direction positioning hole 312, a load-bearing surface 314, and a second Z-direction positioning hole 315: the second X-direction positioning hole 312 is symmetrically opened at the top, and can be limited along the X direction (length direction) after being connected to the front frame 100 of the vehicle body; the load-bearing surface 314 is symmetrically arranged on the surface of the lower front bumper body 310, and mainly plays a supporting and limiting role along the Z direction; combined with Figure 3b It can be seen that there are several second Z-direction positioning holes 315 located at the bottom of the front bumper lower body 310. After being connected to the front frame 100 of the vehicle body, the Z-direction limiting effect can be further enhanced.

[0032] Furthermore, the surface of the front bumper lower bracket 320 is provided with a fifth mounting hole 321, a sixth mounting hole 322, and a seventh mounting hole 323, and these three types of mounting holes are symmetrically distributed at both ends of the front bumper lower bracket 320. When these mounting holes are assembled with the front frame 100 of the vehicle body, they can jointly realize the positioning of the front bumper lower assembly 300 in the X direction (length direction) of the vehicle body.

[0033] In addition, the headlight assembly 400 is detachably connected to the front frame 100 of the vehicle body, and is mounted in the corresponding mounting area of ​​the upper grille 220 of the front bumper along the X direction of the vehicle body, forming a matching relationship with the upper grille 220 of the front bumper.

[0034] It should be noted that all mounting points of the upper front bumper assembly 200 and the lower front bumper assembly 300 are not visible from the front of the vehicle. This design effectively avoids the installation structure being exposed and fully meets the design requirements for the overall refinement of the vehicle's appearance.

[0035] It should be further explained that, in the embodiments of the present invention, in addition to using the fit between the waist hole and the round pin, the fit between the square block and the round pin can also be used. Furthermore, the structure of the waist hole and the cross-shaped pin, etc., is based on the same principle as the positioning structure in this example, and therefore is also within the scope of protection of the present invention. Moreover, in the embodiments of the present invention, the Y-direction positioning of the lower front bumper assembly 300 is achieved by the combined action of the outer contour dimension of the boss shape of the lower assembly and the inner contour dimension of the groove shape of the upper assembly, which can be considered a special hole-pin structure, and its principle is still hole-pin fit. Therefore, the following situations are also within the scope of protection of the present invention: the upper front bumper assembly 200 (or the lower front bumper assembly 300) has a waist hole, rectangular hole, or other shaped hole feature with the short side in the Y direction; the lower front bumper assembly 300 (or the upper front bumper assembly 200) has a round pin, tapered pin, cross-shaped pin, or other shaped pin feature.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A split-type front bumper mounting structure, characterized in that, include: Front end frame of vehicle body (100); The front bumper upper assembly (200) includes a front bumper upper body (210) and a front bumper upper grille (220). The front bumper upper body (210) is located on top of the front bumper upper grille (220). The front bumper upper body (210) is detachably connected to the front end frame (100) of the vehicle body. The front bumper upper grille (220) is used to control the position of the front bumper upper assembly (200) along the X direction of the vehicle body, where the X direction of the vehicle body is the length direction of the vehicle body. The lower front bumper assembly (300) is detachably connected to the front end frame (100) of the vehicle body along the X direction; and the lower front bumper assembly (300) is detachably connected to the upper front bumper grille (220) for limiting the lower front bumper assembly (300) along the Y and Z directions of the vehicle body; the Y direction of the vehicle body is the width direction of the vehicle body; The headlight assembly (400) is detachably connected to the front frame (100) of the vehicle body and is mounted in the upper grille (200) of the front bumper along the X direction of the vehicle body.

2. The split-type front bumper mounting structure according to claim 1, characterized in that, The top of the front bumper upper body (210) is provided with a Y-direction positioning hole (211) and a first X-direction positioning hole (212) symmetrically arranged on both sides of the Y-direction positioning hole (211). The front bumper upper body (210) is detachably connected to the front frame of the vehicle body (100) through the Y-direction positioning hole (211) and the first X-direction positioning hole (212).

3. The split-type front bumper mounting structure according to claim 2, characterized in that, The front bumper upper body (210) has first mounting holes (213) at both ends. The surface where the first mounting holes (213) are located fits against the front frame (100) of the vehicle body to limit the position of the front bumper upper assembly (200) in the X direction of the vehicle body. The first mounting hole (213) is located outside the first X-direction positioning hole (212) and is used to absorb tolerances.

4. The split-type front bumper mounting structure according to claim 1, characterized in that, The bottom of the upper front bumper grille (220) is provided with symmetrical second mounting holes (222) and symmetrical third mounting holes (224), the third mounting holes (224) being located outside the second mounting holes (222); the surfaces where the second mounting holes (222) and the third mounting holes (224) are located are fitted with the front end frame (100) of the vehicle body, which is used to define the position of the upper front bumper assembly (200) in the X direction of the vehicle body; The upper front grille (220) has a fourth mounting hole (225) at both ends. The surface of the fourth mounting hole (225) is in contact with the headlight assembly (400) to limit the position of the upper front grille assembly (200) in the X direction of the vehicle body.

5. A split-type front bumper mounting structure according to claim 4, characterized in that, The structure where the symmetrical second mounting hole (222) is located is a groove structure (221); the groove structure (221) is engaged with the front bumper lower assembly (300) and is used to limit the front bumper lower assembly (300) along the Y direction of the vehicle body; The bottom of the upper grille (220) of the front bumper is also provided with a symmetrical first Z-direction positioning hole (223). The first Z-direction positioning hole (223) is located between the second mounting hole (222) and the fourth mounting hole (225) and is used to limit the lower front bumper assembly (300) along the Z direction of the vehicle body after cooperating with the lower front bumper assembly (300).

6. A split-type front bumper mounting structure according to claim 5, characterized in that, The front lower bumper assembly (300) includes a front lower bumper body (310) and a front lower bumper bracket (320), the front lower bumper bracket (320) being mounted on the surface of the front lower bumper body (310) facing the interior of the vehicle.

7. A split-type front bumper mounting structure according to claim 6, characterized in that, The front bumper lower body (310) is provided with a boss structure (311) on the top, which engages with the groove structure (221) to limit the front bumper lower assembly (300) along the Y direction of the vehicle body.

8. A split-type front bumper mounting structure according to claim 6, characterized in that, The front bumper lower body (310) is provided with symmetrical positioning pins (313) on its surface. The positioning pins (313) are used to limit the front bumper lower assembly (300) along the Z direction of the vehicle body after cooperating with the first Z-direction positioning hole (223).

9. A split-type front bumper mounting structure according to claim 6, characterized in that, The front lower body (310) is also provided with a second X-direction positioning hole (312), a load-bearing surface (314), and a second Z-direction positioning hole (315). The second X-direction positioning hole (312) is symmetrically installed on the top of the front bumper lower body (310) for X-direction limiting after being connected to the front frame (100) of the vehicle body; The load-bearing surface (314) is symmetrically arranged on the surface of the front lower body (310) for Z-direction limiting; The second Z-direction positioning hole (315) is provided in several places and is located at the bottom of the front bumper lower body (310) for Z-direction positioning after being connected to the front frame (100) of the vehicle body.

10. A split-type front bumper mounting structure according to any one of claims 6-9, characterized in that, The surface of the front lower bracket (320) is provided with a fifth mounting hole (321), a sixth mounting hole (322) and a seventh mounting hole (323); The fifth mounting hole (321), the sixth mounting hole (322) and the seventh mounting hole (323) are symmetrically distributed at both ends of the front bumper lower bracket (320) and are used to achieve X-axis positioning after assembly with the front frame (100) of the vehicle body.

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