An assembly method of a split front bumper assembly

Abstract

The application relates to the front protection field, in particular to an assembling method of an assembled front protection assembly, which comprises the following steps: checking to-be-assembled parts, pre-assembling the parts, assembling an upper protection body and a front grille, and installing a lower protection body; the application can avoid interference problems during assembling of the assembled front protection assembly through limitation of specific procedures, and can realize pre-integrated assembling of multiple parts through multiple stations, so that the assembling efficiency of the front protection assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of front protection, in particular to an assembling method of an assembled front protection assembly. BACKGROUND

[0002] The automobile front protection is a front end protection plate structure of an automobile, and a traditional automobile front protection assembly generally comprises a front protection plate, a middle mesh, a lower protection plate, a decorative part and a mounting bracket.

[0003] Although the existing automobile front protection assembly has good use effect, the following problems still exist:

[0004] The assembling process of the traditional front protection assembly is not unified, and each component of the front protection assembly is generally assembled at one station. At the same time, due to the disorder of the workers' assembly, the assembly interference between the components is easily caused. At the same time, whether the traditional front protection assembly is assembled itself or assembled on the whole vehicle, the error accumulation is caused due to the assembly, so that the front protection assembly has a large assembly gap with the adjacent components.

[0005] The size of the traditional front protection plate body is large, and the integral injection molding is prone to deformation, and the shrinkage is prone to occur at the corner.

[0006] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the structure or the assembling process of the existing front protection assembly.

[0007] Through retrieval, the existing patent 201920034158.9-a vehicle body structure for a micro electric vehicle does not explicitly solve the technical content of the above technical problems. SUMMARY

[0008] The purpose of the present application is to provide an assembling method of a front protection assembly.

[0009] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0010] An assembling method of an assembled front protection assembly, the assembled front protection assembly comprises a front protection body, the front protection body comprises an upper protection body, a front grille and a lower protection body, the upper protection body and the lower protection body are connected by an assembling structure at both ends respectively; the front grille is arranged between the upper protection body and the lower protection body, and the front grille is overlapped on the upper protection body and the lower protection body;

[0011] The upper end of the front grille is clamped on the upper protection body, and the lower end of the front grille is connected on the lower protection body;

[0012] The upper protection body is provided with a fog lamp support, and the fog lamp support is connected to the front protection body through a clamping part; the clamping part comprises a clamping buckle arranged on the upper protection body and a clamping slot arranged on the tail lamp support; the fog lamp support comprises a corner arranged at the corner of the upper protection body;

[0013] The assembly method comprises the following steps:

[0014] Step 1: inspecting the parts to be assembled; specifically determining the types of the parts of the front protection assembly to be assembled; and determining whether there are scratches or defects on the parts; if there are scratches or defects, the corresponding parts are replaced; until the parts meeting the design requirements are screened out;

[0015] Step 2: pre-assembling the parts; the installation and assembly between the upper protection body and the fog lamp support and between the front grille and the outer decorative strip are realized on two workstations; the upper protection body and the fog lamp support are assembled to form an upper protection finished product; the front grille and the outer decorative strip are assembled to form a grille finished product;

[0016] Step 3: assembling the upper protection body and the front grille; after Step 2 is completed, the grille finished product is clamped on the upper protection body in the upper protection finished product; after the upper protection body and the front grille are assembled, a front protection semi-finished product is formed;

[0017] Step 4: installing the lower protection body; after Step 3 is completed, the lower protection body is installed on the front protection semi-finished product in Step 3;

[0018] Step 5: after Step 4 is completed, the main assembly of one front protection assembly is completed; if it is necessary to repeatedly assemble the front protection assembly, Steps 1-4 can be repeated.

[0019] The assembly structure comprises a positioning mechanism and a fixing mechanism; the positioning mechanism comprises a longitudinal positioning plate arranged on the lower protection body and a positioning hole arranged on the upper protection body; the longitudinal positioning plate is provided with a positioning pin; the lower protection body is inserted on the upper protection body through the positioning pin; the fixing mechanism comprises a lower horizontal support plate arranged on the lower protection body and an upper horizontal support plate arranged on the upper protection body, and the upper protection body is arranged on the lower horizontal support plate of the lower protection body through the upper horizontal support plate; in Step 4, the positioning pin on the lower protection body is required to be inserted into the positioning hole on the upper protection body first; then the upper protection body and the lower protection body are fixed through the fasteners penetrating through the upper horizontal support plate and the lower horizontal support plate.

[0020] Before the lower protection body is connected with the front grille, the positioning pin in the assembly structure on one side of the lower protection body is required to be inserted into the positioning hole of the upper protection body.

[0021] In Step 4, the lower protection body is required to be clamped on the front grille after the lower protection body and the upper protection body are positioned through the positioning mechanism first.

[0022] The positioning structure is arranged between the upper protection body and the front grille, and comprises a front protection positioning end plate arranged on the front protection body and a grille positioning end plate arranged on the grille body end; the front protection positioning end plate and the grille positioning end plate are arranged in mutual adhesion, and the front grille end is pressed on the front protection positioning end plate through the grille positioning end plate; after the upper protection body, the front grille and the outer trim strip are assembled in step 2, the outer trim strip end is connected with the front protection positioning end plate and the grille positioning end plate on the upper protection body through screws.

[0023] The front grille is lapped on the side of the upper protection body away from the vehicle body, and the lower protection body is lapped on the end of the front grille away from the upper protection body; and is on the side of the grille away from the vehicle body.

[0024] The front grille comprises a grille body, and the grille body periphery is provided with a lapped flange; the lapped flange is provided with a grille buckle or a grille slot;

[0025] The lapped flange comprises an upper lapped flange and a lower lapped flange; the upper lapped flange is arranged close to the upper protection body; the lower lapped flange is arranged on the side close to the lower protection body; the upper lapped flange comprises a left lapped flange and a right lapped flange, and the left and right lapped flanges are distributed in symmetry on the grille body; the grille body is further provided with a license plate; the two ends of the license plate are connected with the left and right lapped flanges through connecting plates; the license plate is lapped on the upper protection body; the license plate is distributed in dislocation with the left and right lapped flanges; when the upper protection body and the front grille are assembled, the upper lapped flange and the license plate above the front grille are required to be lapped on the upper protection body.

[0026] A limiting mechanism is arranged between the upper protection body and the front grille, and the limiting mechanism comprises a plurality of limiting components; each limiting component comprises a limiting protrusion arranged on the upper protection body and a limiting groove arranged on the front grille; in step 3, the front grille is required to be pressed and assembled from the side of the upper protection body away from the vehicle body to the side close to the vehicle body.

[0027] A camera support plate is arranged on the upper protection body, the camera support plate is clamped on the upper protection body, and after the front grille is lapped on the upper protection body, the camera support plate is also clamped on the front grille; in step 3, after the upper protection body and the front grille are assembled to form a front protection semi-finished product, the camera support plate is installed on the upper protection body, and the camera support plate is clamped on the upper protection body and the front grille synchronously.

[0028] An outer trim strip is arranged at the connection between the front grille and the lower protection body; the outer trim strip is clamped on the front grille; the upper end of the outer trim strip is pressed on the front grille, and the lower end is pressed on the lower protection body.

[0029] The outer trim strip includes a central trim strip, and an end trim strip is attached to each end of the central trim strip. The end trim strips press against the grille positioning end plate on the grille body. During assembly, the central trim strip is pre-installed first, and after the central trim strip is installed, an end trim strip is attached to each end of it.

[0030] The advantages of this invention are:

[0031] This invention discloses an assembly method for a modular front bumper assembly.

[0032] By limiting specific processes, this invention can avoid interference problems during the assembly of modular front bumper assemblies. At the same time, by achieving pre-integration and assembly of multiple components through multiple workstations, the assembly efficiency of the front bumper assembly can be improved. Attached Figure Description

[0033] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0034] Figure 1 This is a diagram illustrating the assembly process of the present invention.

[0035] Figure 2 This is a perspective view of the invention from a first-person perspective.

[0036] Figure 3 This is a perspective view of the invention from a second viewpoint.

[0037] Figure 4 This is a perspective view of the invention from a second angle.

[0038] Figure 5 for Figure 2 A magnified view of a portion of region A in the middle.

[0039] Figure 6 for Figure 2 A magnified view of a portion of region B in the middle.

[0040] Figure 7 This is a schematic diagram of the structure when the front grille and the lower bumper body are connected in this invention.

[0041] Figure 8 for Figure 7 A magnified view of a portion of the image.

[0042] Figure 9 This is a schematic diagram of the front grille from a first-view perspective in this invention.

[0043] Figure 10 This is a structural schematic diagram of the front grille from a second perspective in this invention.

[0044] Figure 11 This is a schematic diagram of the structure of the upper body in this invention.

[0045] Figure 12 for Figure 11 Enlarged view of a portion of the image.

[0046] The markings in the above figures are all:

[0047] 1. Lower bumper body, 2. Front grille, 3. Upper bumper body, 4. Camera bracket, 5. Fog light bracket. Detailed Implementation

[0048] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0049] A method for assembling a modular front bumper assembly, the modular front bumper assembly including a front bumper body 1-1, the front bumper body 1-1 including an upper bumper body 3, a front grille 2 and a lower bumper body 1, the upper bumper body 3 is provided with a fog light bracket 5, and the front grille 2 is provided with an outer trim strip.

[0050] The assembly method includes the following steps:

[0051] Step 1: Inspect the parts to be assembled; specifically determine the model of each part of the front bumper assembly to be assembled; and determine whether each part has scratches or defects; if scratches or defects are found, replace the corresponding parts; until parts that meet the design requirements are selected.

[0052] Step 2: Pre-assembly of parts; The upper bumper body 3 and fog light bracket 5, as well as the front grille 2 and exterior trim strip are installed and assembled at two workstations; The upper bumper body 3 and fog light bracket 5 are assembled to form the upper bumper finished product; The front grille 2 and exterior trim strip are assembled to form the grille finished product;

[0053] Step 3: Assemble the upper bumper body 3 with the front grille 2; After step 2 is completed, snap the finished grille onto the upper bumper body 3 in the finished upper bumper; After the upper bumper body 3 and the front grille 2 are assembled, a semi-finished front bumper is formed;

[0054] Step 4: Install the lower protection body 1. After completing step 3, install the lower protection body 1 onto the front protection semi-finished product from step 3.

[0055] Step 5: After completing Step 4, the main assembly of a front bumper assembly is complete. If you need to reassemble the front bumper assembly, repeat Steps 1-4 above.

[0056] By limiting specific processes, this invention can avoid interference problems during the assembly of modular front bumper assemblies. At the same time, by achieving pre-integration and assembly of multiple components through multiple workstations, the assembly efficiency of the front bumper assembly can be improved.

[0057] In theory, after the above processes are completed, a step of visual inspection of the assembled product should be carried out. Specifically, this mainly involves checking whether the components are installed in place and observing whether there are scratches on the outer surface.

[0058] The modular front bumper assembly described in this invention includes a front bumper body 1-1, which comprises an upper bumper body 3, a front grille 2, and a lower bumper body 1. The upper bumper body 3 and the lower bumper body 1 are connected at both ends by an assembly structure. The front grille 2 is positioned between the upper bumper body 3 and the lower bumper body 1, and overlaps the upper bumper body 3 and the lower bumper body 1. The front bumper assembly disclosed in this invention, through its three-section structure of the front grille 2, the upper bumper body 3, and the lower bumper body 1, facilitates the production and processing of the front bumper body 1-1. The main structure of the front bumper body 1-1 disclosed in this invention includes three front grilles 2, an upper bumper body 3, and a lower bumper body 1. This design facilitates the subsequent assembly and forming of the front bumper body 1-1.

[0059] In this invention, the front bumper assembly mainly includes a front bumper body 1-1, which is the main structure of the front bumper assembly. The front bumper body 1-1 in this invention includes an upper bumper body 3, a front grille 2, and a lower bumper body 1. These three components constitute the main structure of the front bumper body 1-1. Each component is manufactured separately and then assembled during subsequent use, which greatly improves the production efficiency of the front bumper body 1-1. At the same time, it avoids the problems of large mold size, inconvenient layout, and difficulty in demolding that are common with traditional integrated front bumper body 1-1.

[0060] In addition, in this invention, the upper protective body 3 and the lower protective body 1 are connected at both ends by an assembly structure; the assembly structure facilitates the connection between the upper protective body 3 and the lower protective body 1; in this invention, the upper protective body 3 and the lower protective body 1 are mainly locked and fixed at both ends, and the middle part is connected and installed by the front grille 2.

[0061] In addition, in this invention, the front grille 2 is arranged between the upper bumper body 3 and the lower bumper body 1, and the front grille 2 overlaps the upper bumper body 3 and the lower bumper body 1. In this invention, one function of the front grille 2 is for air intake in the front compartment of the car, and another function is to reduce the wind resistance of the front bumper. At the same time, in this invention, the front grille 2 also plays a connecting role, mainly for fixing the overlap between the upper bumper body 3 and the lower bumper body 1.

[0062] In addition, in this invention, the upper end of the front grille 2 is snapped onto the upper body 3, and the lower end of the front grille 2 is connected to the lower body 1; this arrangement facilitates the connection and installation of the middle area of ​​the upper body 3 and the lower body 1.

[0063] Meanwhile, the upper bumper body 3 in this invention is provided with a fog light bracket 5. The essential function of the fog light bracket 5 is for the subsequent installation and assembly of the fog lights. In this invention, the fog light bracket 5 is connected to the front bumper body 1-1 through a snap-fit ​​component. The snap-fit ​​component includes a snap-fit ​​buckle provided on the upper bumper body 3 and a snap-fit ​​groove provided on the taillight bracket. The basic function of the fog light bracket 5 is for the installation and fixation of the front fog lights on the front bumper body 1-1. In this invention, the fog light bracket 5 also plays a good role in reinforcement and support, mainly to ensure the strength of the left and right sides of the front bumper body 1-1.

[0064] In addition, the fog light bracket 5 described in this invention is located at the corner of the upper body 3; this arrangement ensures the structural strength of the fog light bracket 5 at the corner.

[0065] Furthermore, the assembly structure described in this invention includes a positioning mechanism and a fixing mechanism; the positioning mechanism and fixing mechanism of this invention are mainly used for the connection between the upper protective body 3 and the lower protective body 1, so as to facilitate the installation and fixing of both ends of the upper protective body 3 and the lower protective body 1.

[0066] Specifically, the positioning mechanism in this invention includes a longitudinal positioning plate 111 disposed on the lower protective body 1 and a positioning insertion hole disposed on the upper protective body 3; the longitudinal positioning plate 111 is provided with a positioning pin 114; the lower protective body 1 is inserted into the upper protective body 3 through the positioning pin 114; this arrangement facilitates the lateral insertion and positioning of the lower protective body 1 on the upper protective body 3.

[0067] Furthermore, the fixing mechanism described in this invention includes a lower horizontal support plate 112 disposed on the lower protective body 1 and an upper horizontal support plate 113 disposed on the upper protective body 3. The upper protective body 3 is arranged on the lower horizontal support plate 112 on the lower protective body 1 via the upper horizontal support plate 113. With this arrangement, the upper protective body 3 can be erected on the lower protective body 1 by supporting the upper horizontal support plate 113 with the lower horizontal support plate 112. At the same time, the lower protective body 1 can provide longitudinal support for the upper protective body 3.

[0068] In addition, in this invention, the longitudinal positioning plate 111 is arranged along the longitudinal direction of the vehicle, and the upper transverse support plate 113 and the lower transverse support plate 112 are arranged parallel to the horizontal plane. Based on this design, a relative fixing mechanism between the upper protection body 3 and the lower protection body 1 can be realized in multiple directions, thus better ensuring the stability of the installation between the upper protection body 3 and the lower protection body 1.

[0069] Furthermore, in step 4 of this invention, the positioning pin 114 on the lower retainer body 1 is required to be inserted into the positioning hole on the upper retainer body 3 first; then, the upper retainer body 3 and the lower retainer body 1 are fixed by fasteners passing through the upper horizontal support plate 113 and the lower horizontal support plate 112. Based on this setting, the upper retainer body 3 and the lower retainer body 1 have a pre-positioning function, which facilitates the subsequent fasteners to pass through the lower horizontal support plate 112 and the upper horizontal support plate 113; and avoids misalignment of the holes on the lower horizontal support plate 112 and the upper horizontal support plate 113, which would affect the fastener connection.

[0070] In addition, before the lower bumper body 1 is connected to the front grille 2 as described in this invention, the positioning pin 114 in the assembly structure on one side of the lower bumper body 1 is required to be inserted into the positioning hole of the upper bumper body 3. Based on this operation method, this invention can achieve pre-positioning of the lower bumper body 1 and the front grille 2 before they are engaged, which is equivalent to one end of the lower bumper body 1 being connected to the front grille 2 through the upper bumper body 3, which helps to ensure the accuracy of the installation of the front grille 2 and the lower bumper body 1.

[0071] In addition, in step 4 of this invention, the lower retainer body 1 and the upper retainer body 3 are first positioned by a positioning mechanism, and then the lower retainer body 1 is snapped onto the front grille 2. Essentially, the position of the lower retainer along the Y-direction of the vehicle is first defined, and then the locking and fixing between the lower retainer body 1 and the front grille 2 is performed. This operation method ensures the stability of the installation between the lower retainer body 1 and the front grille 2.

[0072] Furthermore, in this invention, the side of the upper horizontal support plate 113 on the upper body 3 presses against the side of the longitudinal positioning plate 111. Based on this arrangement, the longitudinal positioning plate 111 can limit the end of the upper horizontal support plate 113, thereby ensuring the alignment operation of the ends of the upper body 3 and the lower body 1, facilitating the stability of the relative installation of the upper body 3 and the lower body 1, and avoiding relative movement between the upper body 3 and the lower body 1.

[0073] Furthermore, in this invention, a positioning structure is provided between the upper body 3 and the front grille 2. The positioning structure is mainly set to ensure the stability of the installation position between the upper body 3 and the front grille 2, and at the same time to avoid relative movement between the upper body 3 and the front grille 2. In other words, the positioning structure of this invention can limit the relative position between the upper body 3 and the front grille 2.

[0074] Specifically, the positioning structure in this invention includes a front bumper positioning end plate 31 disposed on the front bumper body 1-1 and a grille positioning end plate 21 disposed at the end of the grille body 201; the front bumper positioning end plate 31 and the grille positioning end plate 21 are arranged in close contact with each other, and the end of the front grille 2 is pressed against the front bumper positioning end plate 31 by the grille positioning end plate 21; the invention, through the cooperative use of the front bumper positioning end plate 31 and the grille positioning end plate 21, can ensure the close contact between the upper bumper body 3 and the end of the front grille 2, playing a role in relative positioning and limiting. In addition, in this invention, the front bumper positioning end plate 31 is set perpendicular to the upper bumper body 3, and the grille positioning end plate 21 is set perpendicular to the grille body 201; such an arrangement facilitates the limitation of the relative position between the front grille 2 and the upper bumper body 3.

[0075] Furthermore, in step 2 of this invention, after the upper bumper body 3, the front grille 2, and the outer trim strip are assembled, screws are passed through the front bumper positioning end plate 31 on the upper bumper body 3 and the grille positioning end plate 21 on the front grille 2 to connect with the end of the outer trim strip. This arrangement can achieve locking and fixing of the upper bumper body 3, the front grille 2, and the outer trim strip, and the upper bumper body 3, the front grille 2, and the outer trim strip have a mutual positioning function, which can ensure the accuracy of the assembly position of the three.

[0076] Furthermore, in this invention, the longitudinal positioning plate 111 and the lower horizontal support plate 112 are staggered; the longitudinal positioning plate 111 is set perpendicular to the lower horizontal support plate 112; based on this setting, the longitudinal positioning plate 111 and the lower horizontal support plate 112 have a certain offset, which facilitates the longitudinal positioning plate 111 to abut against the side of the upper horizontal support plate 113 during subsequent use, thereby realizing the relative position limitation and calibration of the upper protection body 3 and the lower protection body 1.

[0077] Furthermore, in this invention, the front grille 2 overlaps with the upper bumper body 3 on the side away from the vehicle body, and the lower bumper body 1 overlaps with the front grille 2 on the side away from the upper bumper body 3; and is located on the side of the grille away from the vehicle body; based on this arrangement, the front grille 2 is equivalent to overlapping the outside of the upper bumper body 3, and the lower part of the front grille 2 overlaps the inside of the lower bumper body 1. Based on this arrangement, it is convenient to overlap and install the upper bumper body 3, the front grille 2 and the lower bumper body 1 in sequence, and to facilitate the subsequent assembly operation of the front bumper body 1-1.

[0078] In addition, in this invention, the overlap between the front grille 2 body and the upper guard body 3 has a license plate structure, which ensures the strength of the license plate installation area of ​​the subsequent vehicle.

[0079] Furthermore, in this invention, the front grille 2 includes a grille body 201, and the grille body 201 has an overlapping flange around its perimeter; the overlapping flange has a grille buckle or a grille slot; generally, a grille buckle is provided on the upper part of the grille body 201, and a grille slot is provided on the lower part of the grille body 201; in this invention, the upper part of the grille body 201 is engaged with the corresponding slot of the upper body 3 by the grille buckle, while the lower body 1 is engaged with the corresponding slot of the grille body 201 by the corresponding buckle.

[0080] Meanwhile, the overlapping flange in this invention includes an upper overlapping flange and a lower overlapping flange 22; the upper overlapping flange is arranged close to the upper body 3; the lower overlapping flange 22 is arranged close to the lower body 1; based on this arrangement, it is convenient to overlap and install the front grille 2 with the upper body 3 and the lower body 1.

[0081] Furthermore, in this invention, the upper overlapping flange includes a left overlapping flange 23 and a right overlapping flange 231. The overlapping flange and the right overlapping flange 231 are symmetrically distributed at intervals on the grille body 201. In this invention, the setting of the left overlapping flange 23 and the right overlapping flange 231 facilitates the connection between the upper left and right sides of the front grille 2 and the upper body 3.

[0082] Meanwhile, the grille body 201 described in this invention is also provided with a license plate 24; the license plate 24 has two main functions, one is to connect the front grille 2 and the upper bumper body 3, and the other is to install the license plate 24 later.

[0083] In addition, in this invention, the two ends of the license plate 24 are connected to the left overlapping flange 23 and the right overlapping flange 231 respectively through connecting plates; the license plate 24 is overlapped with the upper bumper body 3; the license plate 24 and the left overlapping flange 23 and the right overlapping flange 231 are staggered; the staggered distribution means that the distance between the license plate 24 and the front of the vehicle body is greater than the distance between the left overlapping flange 23 and the right overlapping flange 231 and the front of the vehicle body. This setting makes the license plate 24 and the left overlapping flange 23 and the right overlapping flange 231 staggered, thus forming a stepped structure, which facilitates the position limitation of the upper bumper body 3 during subsequent use and avoids the upper bumper body 3 and the front grille 2 from shaking or moving along the Y direction of the whole vehicle.

[0084] In addition, in this invention, when the upper bumper body 3 and the front grille 2 are assembled, the upper overlapping flange and the license plate 24 above the front grille 2 are required to overlap on the upper bumper body 3. This design can increase the contact area between the upper bumper body 3 and the front grille 2, and better ensure the stability of the connection when the two overlap.

[0085] Furthermore, in this invention, the grille body 201 includes a grille frame plate, and the grille frame plate is provided with a ventilation cavity 202; this facilitates subsequent ventilation operations, facilitates air intake operations for the front compartment of the vehicle, facilitates air cooling of the front compartment area, and can reduce wind resistance during vehicle operation.

[0086] In addition, the ventilation cavity 202 described in this invention is provided with decorative ribs 203; the decorative ribs 203 serve two purposes: aesthetics and support, which helps to ensure the structural strength of the front grille 2; specifically, the decorative ribs 203 in this invention include two spaced-apart side plates, which are connected by a guide arc plate on the side away from the vehicle body; this arrangement can ensure the strength of the decorative ribs 203 while the guide arc plate reduces the wind resistance formed by the decorative ribs 203.

[0087] Furthermore, in this invention, a limiting mechanism is provided between the upper bumper body 3 and the front grille 2. The limiting mechanism plays a good role in limiting the position and prevents the upper bumper body 3 and the front grille 2 from shaking in the Y direction during subsequent use. Specifically, the limiting mechanism in this invention includes multiple limiting components. Each limiting component includes a limiting protrusion 271 provided on the upper bumper body 3 and a limiting groove 27 provided on the front grille 2. During subsequent use, the upper bumper body 3 is inserted into the limiting groove 27 of the front grille 2 through the limiting protrusion 271, thereby preventing the front grille 2 and the upper bumper body 3 from shaking.

[0088] In addition, in step 3 of this invention, the front grille 2 is required to be pressed and assembled from the side of the upper bumper body 3 away from the vehicle body to the side closer to the vehicle body; this setting can avoid installation interference between the front grille 2 and the upper bumper body 3.

[0089] Furthermore, in this invention, the upper body 3 is provided with a camera support plate 4. The basic function of the camera support plate 4 is to install and fix the front camera. In this invention, the camera support plate 4 is required to be snapped onto the upper body 3. After the front grille 2 overlaps the upper body 3, it is also snapped onto the camera support plate 4. This arrangement allows the camera support plate 4 to play a good bridging role by connecting the upper body 3 and the front grille 2, thus better ensuring the stability of the connection between the upper body 3 and the front grille 2.

[0090] In step 3 of this invention, after the upper bumper body 3 and the front grille 2 are assembled to form a semi-finished front bumper, a camera support plate 4 is then installed on the upper bumper body 3. The camera support plate 4 is simultaneously snapped onto the upper bumper body 3 and the front grille 2. Based on the above design, this invention enables the camera support plate 4 to have multiple functions. Its basic function is to install the camera later. Another function is to act as a connector to facilitate the fixed installation between the upper bumper body 3 and the front grille 2.

[0091] Furthermore, in this invention, an outer trim strip 6 is provided at the connection between the front grille 2 and the lower bumper body 1. The basic function of the outer trim strip 6 is to ensure the aesthetics of the front end of the front bumper body 1-1. In addition, the outer trim strip 6 is snapped onto the front grille 2. The upper end of the outer trim strip 6 presses against the front grille 2, and the lower edge presses against the lower bumper body 1. This arrangement allows the outer trim strip 6 to control the assembly gap between the front grille 2 and the upper bumper body 3, preventing the gap between the front grille 2 and the upper bumper body 3 from being exposed.

[0092] Furthermore, in this invention, the outer trim strip 6 includes a central trim strip 61, with an end trim strip 62 overlapping at both ends of the central trim strip 61. The end trim strips 62 press against the grille positioning end plate 21 on the grille body 201. The segmented structure of the outer trim strip 6 facilitates the production of the outer trim strip 6 structure. In this invention, the end trim strips 62 overlap the central trim strip 61. In actual connection, the central trim strip 61 is installed first, and then the end trim strips 62 are installed, reducing the mutual interference problem when the central trim strip 61 and the end trim strips 62 are installed.

[0093] In addition, in this invention, during assembly, the central trim strip 61 is pre-installed, and after the central trim strip 61 is installed, an end trim strip 62 is attached to each of its two ends. This arrangement can achieve the compression and fixation of the ends of the central trim strip 61 through the end trim strips 62, thereby ensuring the stability of the central trim strip 61 on the front grille 2 and reducing the risk of the central trim strip 61 falling off.

[0094] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A method for assembling a modular front bumper assembly, characterized in that, The modular front bumper assembly includes a front bumper body, which includes an upper bumper body, a front grille, and a lower bumper body. The upper and lower bumper bodies are connected at both ends by an assembly structure. The front grille is positioned between the upper and lower bumper bodies and overlaps the upper and lower bumper bodies. The upper end of the front grille is snapped onto the upper bumper body, and the lower end of the front grille is connected to the lower bumper body; The upper bumper body is provided with a fog light bracket, which is connected to the front bumper body via a snap-fit ​​component; the snap-fit ​​component includes a snap-fit ​​buckle provided on the upper bumper body and a snap-fit ​​groove provided on the taillight bracket; the fog light bracket is located at a corner of the upper bumper body. An outer trim strip is provided at the connection between the front grille and the lower bumper body; the outer trim strip is snapped onto the front grille; the upper end of the outer trim strip abuts against the front grille, and the lower edge abuts against the lower bumper body; The assembly structure includes a positioning mechanism and a fixing mechanism; the positioning mechanism includes a longitudinal positioning plate disposed on the lower protective body and a positioning insertion hole disposed on the upper protective body; the longitudinal positioning plate is provided with a positioning pin; the lower protective body is inserted into the upper protective body through the positioning pin; the fixing mechanism includes a lower horizontal support plate disposed on the lower protective body and an upper horizontal support plate disposed on the upper protective body, the upper protective body being arranged on the lower horizontal support plate of the lower protective body through the upper horizontal support plate; The assembly method includes the following steps: Step 1: Inspect the parts to be assembled; specifically determine the model of each part of the front bumper assembly to be assembled; and determine whether each part has scratches or defects; if scratches or defects are found, replace the corresponding parts; until parts that meet the design requirements are selected. Step 2: Component pre-assembly; The upper bumper body and fog light brackets, as well as the front grille and exterior trim, are installed and assembled at two workstations; The upper bumper body and fog light brackets are assembled to form the upper bumper finished product; The front grille and exterior trim are assembled to form the grille finished product; Step 3: Assemble the upper bumper body and the front grille; After step 2 is completed, snap the finished grille onto the upper bumper body in the finished upper bumper body; After the upper bumper body and the front grille are assembled, a semi-finished front bumper body is formed; Step 4: Install the lower protection body. After completing Step 3, install the lower protection body onto the front protection semi-finished product from Step 3. The positioning pin on the lower protection body must first be inserted into the positioning hole on the upper protection body; then the upper protection body and the lower protection body are fixed by fasteners passing through the upper and lower horizontal support plates. Step 5: After completing Step 4, the main assembly of a front bumper assembly is complete. If you need to reassemble the front bumper assembly, repeat Steps 1-4 above.

2. The assembly method of the modular front bumper assembly according to claim 1, characterized in that, Before the lower bumper body is connected to the front grille, the positioning pin in the assembly structure on one side of the lower bumper body must be inserted into the positioning hole of the upper bumper body.

3. The assembly method of a modular front bumper assembly according to claim 2, characterized in that, In step 4, the lower guard body and the upper guard body are first positioned by a positioning mechanism, and then the lower guard body is snapped onto the front grille.

4. The assembly method of a modular front bumper assembly according to claim 1, characterized in that, A positioning structure is provided between the upper bumper body and the front grille. The positioning structure includes a front bumper positioning end plate disposed on the front bumper body and a grille positioning end plate disposed at the end of the grille body. The front bumper positioning end plate and the grille positioning end plate are arranged in close contact with each other, and the end of the front grille is pressed against the front bumper positioning end plate through the grille positioning end plate. In step 2, after the upper bumper body, the front grille and the outer trim strip are assembled, screws are passed through the front bumper positioning end plate on the upper bumper body and the grille positioning end plate on the front grille to connect with the end of the outer trim strip.

5. The assembly method of a modular front bumper assembly according to claim 1, characterized in that, The front grille overlaps the upper bumper body on the side away from the vehicle body, and the lower bumper body overlaps the front grille on the side away from the upper bumper body; and is located on the side of the grille away from the vehicle body; The front grille includes a grille body, and the grille body has an overlapping flange around its perimeter; the overlapping flange is provided with a grille buckle or a grille slot; The overlapping flange includes an upper overlapping flange and a lower overlapping flange; the upper overlapping flange is arranged close to the upper bumper body; the lower overlapping flange is arranged on the side close to the lower bumper body; the upper overlapping flange includes a left overlapping flange and a right overlapping flange, the overlapping flange and the right overlapping flange are symmetrically distributed at intervals on the grille body, and the grille body is also provided with a license plate; the two ends of the license plate are connected to the left overlapping flange and the right overlapping flange respectively through connecting plates; the license plate is overlapped with the upper bumper body; the license plate is staggered with the left overlapping flange and the right overlapping flange; when the upper bumper body is assembled with the front grille, it is required that the upper overlapping flange and the license plate above the front grille overlap the upper bumper body.

6. The assembly method of a modular front bumper assembly according to claim 4, characterized in that, A limiting mechanism is provided between the upper bumper body and the front grille. The limiting mechanism includes multiple limiting components. Each limiting component includes a limiting protrusion on the upper bumper body and a limiting groove on the front grille. In step 3, the front grille is required to be pressed and assembled from the side of the upper bumper body away from the vehicle body to the side closer to the vehicle body.

7. The assembly method of a modular front bumper assembly according to claim 1, characterized in that, The upper bumper body is provided with a camera support plate, which is snapped onto the upper bumper body. After the front grille is attached to the upper bumper body, it is also snapped onto the camera support plate. In step 3, after the upper bumper body and the front grille are assembled to form a semi-finished front bumper, the camera support plate is then installed on the upper bumper body, and the camera support plate is snapped onto the upper bumper body and the front grille simultaneously.

8. The assembly method of a modular front bumper assembly according to claim 1, characterized in that, The outer trim strip includes a central trim strip, and each end of the central trim strip overlaps with an end trim strip, which presses against the grille positioning end plate on the grille body.

9. The assembly method of a modular front bumper assembly according to claim 8, characterized in that, During assembly, the central trim strip is pre-installed, and after the central trim strip is installed, an end trim strip is attached to each of its two ends.

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