Vehicle lamp decorative frame assembly and machining method

Abstract

The vehicle lamp decorative frame assembly comprises a decorative frame, a mounting cavity is formed in the center of the rear end of the decorative frame, a mounting hole which penetrates through the decorative frame and is communicated with the mounting cavity is formed in the center of the decorative frame, and a thick-wall mounting cavity which is formed along the periphery of the decorative frame and is formed in the front end face of the decorative frame in a sinking mode is formed in the front end face of the decorative frame. The thick-wall mounting cavity comprises circuit mounting plates which are arranged at the bottom of the thick-wall mounting cavity in a backward protruding mode, the circuit mounting plates are arranged in a step-shaped high-low staggered mode along the periphery of the decorative frame, and flexible circuit boards which are provided with a plurality of LED light sources and are arranged corresponding to the step-shaped circuit mounting plates are installed at the rear ends of the circuit mounting plates. Light source containing holes used for containing LED light sources on the flexible circuit board are formed in all the step faces of the circuit installation board, hot riveting columns extending backwards are arranged at the rear end of the circuit installation board, and positioning holes formed in the outer sides of the hot riveting columns are formed in the flexible circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamps, and in particular to a vehicle lamp decorative frame assembly and a processing method thereof. Background Art

[0002] Currently, vehicle lights are becoming increasingly integrated and multifunctional, with various combination lights appearing on vehicles. Existing taillights require the integration of position lights, turn signals, brake lights, and high-intensity position lights into a single body. However, these taillights are not sufficiently integrated, are bulky, and their internal components are primarily connected through one or more of a combination of bonding, welding, snap-on connections, and screw connections. Assembly using these methods is not only unreliable, but also aesthetically pleasing and can even damage components. Existing taillights are directly hot-riveted to the taillight trim using a flexible PCB. However, these lighting products have various issues, including poor PCB hot-riveting quality, unfavorable taillight structures, uneven lighting, and a large installation footprint. The layout of the corresponding taillight functions needs improvement. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the above-mentioned prior art and provide a vehicle lamp decorative frame assembly, which is convenient for the highly integrated installation of lamp bodies with different functions, and has a firm installation and good stability, which is convenient for subsequent hot riveting equipment to perform hot riveting.

[0004] The present invention solves its technical problems by adopting a technical solution: this vehicle lamp decorative frame assembly includes a decorative frame, a mounting cavity is provided at the center position of the rear end of the decorative frame, a mounting hole is provided in the center of the decorative frame, and a thick-walled mounting cavity is provided along the outer periphery of the decorative frame and sunken on the front end of the decorative frame. The thick-walled mounting cavity includes a circuit mounting plate protruding rearwardly and arranged at the bottom of the thick-walled mounting cavity. The circuit mounting plate is arranged in a stepped manner along the outer periphery of the decorative frame. A flexible circuit board with a plurality of LED light sources and corresponding to the stepped circuit mounting plate is installed at the rear end of the circuit mounting plate. A light source accommodating hole for accommodating the LED light source on the flexible circuit board is provided on each stepped surface of the circuit mounting plate. A heat rivet column extending rearward is provided at the rear end of the circuit mounting plate. A positioning hole installed on the outside of the heat rivet column is provided on the flexible circuit board. There are three mounting holes designed at corresponding intervals, and a mounting hole is provided. The mounting cavity and mounting holes are used for positioning and installing the turn signals, brake lights and high-brightness position lights, and a thick-walled mounting cavity for installing thick-walled light guides for the position lights is provided on the periphery of the decorative frame, thereby forming a surround setting form, ensuring that each headlight is relatively highly integrated and the setting form and light-emitting effect are relatively beautiful, and the flexible circuit board is relatively arranged on the rear end of the circuit mounting plate of the decorative frame through the heat rivet column, and the position lights are illuminated by combining the LED light source and the thick-walled light guide, thereby reducing the styling space of the taillights and facilitating the subsequent heat riveting operation of the flexible circuit board; and the heat rivet columns are relatively arranged on the rear end surface of the circuit mounting plate, which is convenient for one-time multi-point heat riveting and shortens the processing time. The circuit mounting plate and the corresponding flexible circuit board are arranged in a stepped manner to avoid interference installation of subsequent heat rivet heads at different positions, and at the same time can make the lighting effects at different positions on the arc-shaped decorative frame the same.

[0005] Preferably, a limiting portion is provided at the lower end of the hot riveting column for engaging with the positioning hole to limit the position of the flexible circuit board. The limiting portion limits and fixes the flexible circuit board on the rear end surface of the circuit mounting plate. The limiting portion is provided, and before the flexible circuit board is hot riveted, the limiting portion can be used to limit the flexible circuit board to fit on the rear end of the circuit mounting plate of the decorative frame, thereby facilitating subsequent hot riveting operations and ensuring the quality of hot riveting.

[0006] Preferably, at least one pair of thermal rivet columns is provided on each stepped surface of the circuit mounting board, and the thick-walled mounting cavity further includes a first edge support plate provided on the circuit mounting board and close to the mounting hole, and a second edge support plate provided on the circuit mounting board and away from the mounting hole. The pair of thermal rivet columns are respectively provided on vertical surfaces close to the first edge support plate and the second edge support plate, and the pair of thermal rivet columns are relatively provided at positions close to the first edge support plate and the second edge support plate, so that the thermal rivet columns can be effectively supported when pressed down during thermal riveting, thereby preventing the circuit mounting board from being deformed by force, thereby ensuring accurate positioning during subsequent decorative frame installation, avoiding light leakage from the light source, and ensuring the light output effect of the car lights.

[0007] Preferably, a method for processing a vehicle lamp trim frame assembly comprises the following steps: Step 1: Place the front end of the decorative frame downward on the fixed fixture of the hot riveting equipment, so that the hot riveting studs at the rear end of the circuit mounting plate on the decorative frame are in a vertical position; Step 2: Move the flexible circuit board from top to bottom, close to the rear end surface of the circuit mounting board, and make the positioning holes on the flexible circuit board cover the outside of the heat rivet column and fit the flexible circuit board to the rear end surface of the circuit mounting board through the limiting part; Step 3: Start the hot riveting equipment so that the hot riveting head located above the decorative frame on the hot riveting equipment moves downward under the action of the driving device. The hot riveting head gradually moves downward to cover the outside of the hot riveting column and contact the hot riveting column; during the downward movement, the high-temperature hot riveting head heats the hot riveting column and melts and deforms the hot riveting column and limits it to the outside of the flexible circuit board. Then the hot riveting head moves upward to its original position under the action of the driving device.

[0008] Preferably, the hot riveting equipment includes a frame, a workbench arranged on the frame, a lower jig mounting plate detachably mounted on the workbench, a fixed tool mounted on the lower jig mounting plate, an upper jig mounting plate mounted on the frame and located above the lower jig mounting plate and driven up and down by a driving device, a heating block mounted on the upper jig mounting plate and arranged corresponding to the fixed tool, and a plurality of hot riveting heads mounted on the lower end of the heating block.

[0009] Preferably, a mounting surface is provided at the lower end of the heating block corresponding to each stepped surface on the circuit mounting plate, and the thermal rivet head is detachably mounted on the mounting surface through threads. The thermal rivet head includes a threaded connection portion whose upper end is threadedly mounted on the heating block, a rotation adjustment portion connected below the threaded connection portion, and a thermal rivet portion connected below the rotation adjustment portion. A hexagonal boss for wrench rotation is provided on the outer side of the rotation adjustment portion, and a rotation slot is provided on the rotation adjustment portion that passes through the rotation adjustment portion.

[0010] Preferably, a hot rivet groove corresponding to the vertical hot rivet column is provided at the lower end of the hot rivet head. The hot rivet groove includes a groove which is concavely provided on the lower end surface of the hot rivet head and a fixed extension space which is provided at the lower end edge of the groove and is connected to the groove. The upper end of the groove is offset downward to reduce the melting space in the groove to compensate for the fixed extension space.

[0011] Preferably, the heating block includes a heat transfer portion mounted on the upper fixture mounting plate, a plurality of mounting holes opened on the heat transfer portion, and an electric heating device arranged in the mounting holes.

[0012] Preferably, the fixing tooling includes several positioning blocks arranged on the outside of the edge of the decorative frame, and the positioning blocks are provided with an inclined support surface opened on the upper end surface of the positioning block and arranged corresponding to the outer side of the front end of the decorative frame. The inclined support surface is supported on the lower ends of the first edge support plate and the second edge support plate, and the inclined support surface is connected to an outer limiting surface located on the outside of the decorative frame and extending upward to limit the decorative frame.

[0013] Preferably, the positioning block includes a rear positioning block arranged at the rear end of the lower jig mounting plate, a downwardly concave sinking groove is provided at the middle end of the inclined support surface on the rear positioning block, an auxiliary block positioning groove is provided at the front end of the rear positioning block, which is located at the lower end of the decorative frame and corresponds to the sinking groove, and an auxiliary positioning block is provided on the lower jig mounting plate to be inserted into the auxiliary block positioning groove, and a positioning protrusion is provided on the auxiliary positioning block to protrude upward and be inserted into the mounting hole.

[0014] The beneficial effects of the present invention are as follows: the present invention forms a surrounding headlight arrangement structure by arranging an installation cavity and an installation hole in the middle position and a thick-walled installation cavity arranged on the periphery, so that each lamp body is relatively highly integrated after installation and the arrangement form and the light-emitting effect are relatively beautiful; and the position lights are illuminated by combining LED light sources and thick-walled light guides, so that the styling space of the taillights can be reduced; and the hot rivet columns are relatively arranged on the rear end surface of the circuit mounting plate and the flexible circuit board is limited before hot riveting, which is convenient for one-time multi-point hot riveting and shortens the processing time. The circuit mounting plate and the corresponding flexible circuit board are arranged in a stepped manner to avoid interference installation of subsequent hot rivet heads at different positions, and at the same time, the lighting effects at different positions on the arc-shaped decorative frame can be made the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the invention; Figure 2 This is an exploded view of the flexible circuit board and decorative frame; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 It is a structural diagram of the hot riveting equipment; Figure 5 It is a schematic diagram of the structure of the heating block, decorative frame and positioning block; Figure 6 It is a structural diagram of the hot riveting head; Figure 7 This is the installation diagram of the positioning block; Figure 8 It is a structural diagram of the rear positioning block and the auxiliary positioning block.

[0016] Explanation of the accompanying symbols: 1. Decorative frame, 2. Mounting cavity, 3. Mounting hole, 4. Thick-walled mounting cavity, 4-1. Circuit mounting plate, 4-2. First edge support plate, 4-3. Second edge support plate, 5. Flexible circuit board, 6. Light source accommodating hole, 7. Hot rivet column, 8. Positioning hole, 9. Limiting part, 10. Rack, 11. Workbench, 12. Lower fixture mounting plate, 14. Upper fixture mounting plate, 15. Heating block, 15-1. Heat transfer part, 15-2. Mounting hole, 15-3. Electric heating device, 16. Hot rivet head, 16- 1. Threaded connection part, 16-2. Rotation adjustment part, 16-3. Hot riveting part, 17. Mounting surface, 18. Hexagonal boss, 19. Rotation slot, 20. Hot riveting groove, 20-1. Groove, 20-2. Fixed extension space, 21. Positioning block, 22. Inclined support surface, 23. External limit surface, 24. Rear positioning block, 25. Sunken groove, 26. Auxiliary block positioning groove, 27. Auxiliary positioning block, 28. Positioning protrusion, 29. First step surface, 30. Second step surface, 31. End step surface, 32. Second step surface. DETAILED DESCRIPTION

[0017] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0018] Refer to the attached Figures 1-8 :This embodiment discloses a vehicle lamp frame assembly and a method for processing the vehicle lamp frame assembly. Specifically, Figure 1-Figure 3 As shown, the headlight decorative frame assembly includes a decorative frame 1, a mounting cavity 2 is provided at the center position of the rear end of the decorative frame 1, and a mounting hole 3 is opened in the center of the decorative frame 1 to connect with the mounting cavity 2, the mounting cavity 2 is used to install the headlight module, and the light-emitting end of the headlight module is arranged in the mounting hole 3 to facilitate lighting forward; in this embodiment, there are three mounting holes 3 and they are arranged at intervals from each other, so that the turn signal, brake light and high-brightness position light are arranged in the mounting cavity 2 and the corresponding light-emitting ends of the lamp bodies are located in the mounting holes 3, and a thick-walled mounting cavity 4 is provided on the front face of the decorative frame 1 along the outer periphery of the decorative frame 1 and sunken on the front face of the decorative frame 1, and the thick-walled mounting cavity 4 is used to install corresponding thick-walled light guides to form position lights arranged around the turn signal, brake light and high-brightness position light, thereby forming a surrounding headlight arrangement structure, so that the respective lamp bodies are relatively integrated after installation and the arrangement form and light-emitting effect are relatively beautiful; as shown Figure 2As shown, in order to realize the installation of position lights in small spaces, this embodiment adopts a combination of thick-walled light guides and LED light sources to realize the lighting of position lights; specifically, the thick-walled mounting cavity 4 in this embodiment includes a circuit mounting plate 4-1 protruding backward and arranged at the bottom of the thick-walled mounting cavity 4, a first edge support plate 4-2 arranged on the circuit mounting plate 4-1 and close to the mounting hole 3, and a second edge support plate 4-3 arranged on the circuit mounting plate 4-1 away from the mounting hole 3. The front ends of the first edge support plate 4-2 and the second edge support plate 4-3 are both connected to the decorative frame 1, and the corresponding rear ends of the first edge support plate 4-2 and the second edge support plate 4-3 are both connected to the circuit mounting plate 4-1, and then the first edge support plate 4-2, the circuit mounting plate 4-1 and the second edge support plate 4-3 are connected in sequence to form a thick-walled mounting cavity 4; a flexible electric plate with several LED light sources is installed at the rear end of the circuit mounting plate 4-1 Road board 5, and at the same time, in order to avoid the mutual influence between LED light sources and the occurrence of stray light, in this embodiment, the circuit mounting board 4-1 is arranged in a staggered manner along the outer periphery of the decorative frame 1, and the flexible circuit board 5 is also arranged in a relatively stepped manner. At the same time, a number of LED light sources are relatively arranged on each step surface at the rear end of the stepped circuit mounting board 4-1, and each step surface of the circuit mounting board 4-1 is provided with a light source accommodating hole 6 for accommodating the LED light source on the flexible circuit board 5, so that the protruding LED light source on the flexible circuit board 5 can be relatively arranged in the light source accommodating hole 6, and the flexible circuit board 5 can be relatively fitted on the rear end plane of the circuit mounting board 4-1. The stepped arrangement of the circuit mounting board 4-1 and the flexible circuit board 5 can also ensure that the distance from the LED light source on each step surface to the light emitting surface is close when the light emitting end of the decorative frame 1 is arranged in an arc shape, thereby ensuring uniform lighting effect of the car lights; further, as Figure 1 、 Figure 2 and Figure 5 As shown, the thick-walled mounting cavity 4 is provided with two symmetrically arranged on the left and right outer peripheries of the decorative frame 1, and the decorative frame 1 is designed to be completely curved from top to bottom and gradually outward in order to adapt to the streamlined design of the vehicle body; correspondingly, the circuit mounting plates 4-1 arranged at the rear end of the thick-walled mounting cavity 4 are respectively in a stepped trend that decreases from top to bottom toward the front light-emitting surface. At the same time, in order to make the thickness of the decorative frame 1 relatively uniform, the height difference between the various stepped surfaces in this embodiment can be adaptively adjusted. Moreover, since the taillights are installed on the left and right sides of the vehicle body, the side of the decorative frame close to the side of the vehicle body has more installation design space, thereby making the thickness of the side of the decorative frame 1 close to the side of the vehicle body in this embodiment relatively greater than the side away from the side of the vehicle body, as shown in FIG. Figure 2 As shown, Figure 2The frame 1 in the left tail lamp is slightly thicker on the left side than on the right side, so in this embodiment, the first stepped surface 29 on the upper end of the left circuit mounting plate 4-1 is set lower than the second stepped surface 30 based on the above frame structure, thereby making the stepped surface height on the upper end of the left circuit mounting plate 4-1 close to the stepped surface height on the upper end of the right circuit mounting plate 4-1, thereby making the thick-walled light guide in the thick-walled mounting cavity 4 on the left and right sides relatively uniform in light emission, avoiding large brightness differences; similarly, the terminal stepped surface 31 on the lower end of the right circuit mounting plate 4-1 is set higher than the second-to-last stepped surface 32, thereby making the stepped surface height on the lower end of the right circuit mounting plate 4-1 close to the stepped surface height on the lower end of the right circuit mounting plate 4-1, avoiding brightness differences in the light emission position of the thick-walled light guide on the left and right sides.

[0019] As shown in Figure 2 and Figure 3 To achieve stable installation of the flexible circuit board 5, the rear end of the circuit mounting plate 4-1 in this embodiment is provided with a rearwardly extending hot riveting column 7, and the flexible circuit board 5 is provided with a positioning hole 8 mounted on the outer side of the hot riveting column 7, thereby limiting the flexible circuit board 5 on the rear end plane of the circuit mounting plate 4-1 by hot riveting the hot riveting column 7 with a hot riveting device.

[0020] When installing the flexible circuit board 5 on the rear end plane of the circuit mounting plate 4-1, the flexible circuit board 5 will be raised relative to the stepped rear end plane of the circuit mounting plate 4-1 due to the stepped arrangement, and the flexible circuit board 5 cannot be completely attached to the circuit mounting plate 4-1 before hot riveting, thereby causing the flexible circuit board 5 to be raised and arranged on the upper end of the hot riveting column 7, and when the hot riveting device performs hot riveting, the hot riveting head is easy to contact the flexible circuit board 5, thereby avoiding damage to the flexible circuit board 5 due to heat; as Figure 3As shown, in this embodiment, in order to facilitate the positioning of the flexible circuit board 5 before hot riveting, so that the flexible circuit board 5 is fit and limited on the rear end plane of the circuit mounting board 4-1 to facilitate hot riveting by the hot riveting equipment, a limiting portion 9 is provided at the lower end of the hot riveting column 7 to be engaged with the positioning hole 8. The limiting portion 9 is used to limit and fix the flexible circuit board 5 on the rear end surface of the circuit mounting board 4-1, and to make each step surface on the flexible circuit board 5 fit on the step surface of the rear end of the circuit mounting board 4-1; specifically, the limiting portion 9 in this embodiment is The outer expansion portion is gradually expanded outward from top to bottom, and the diameter of the lower end of the outer expansion portion is slightly larger than the inner diameter of the positioning hole 8. When the flexible circuit board 5 is installed, the positioning hole 8 on the flexible circuit board 5 is sleeved on the outside of the hot rivet column 7 and moves to the side of the limiting portion 9, so that the positioning hole 8 is clamped and limited on the outside of the limiting portion 9, so that the flexible circuit board 5 is fit and limited on the rear end plane of the circuit mounting board 4-1 before hot riveting, avoiding the hot rivet head from contacting the flexible circuit board 5 during hot riveting, and ensuring the normal use of the flexible circuit board 5 after hot riveting.

[0021] Further, such as Figure 3 As shown, in order to ensure the accurate positioning of the flexible circuit board 5, at least one pair of thermal rivet columns 7 is provided on each step surface of the circuit mounting board 4-1 in this embodiment, so that each step surface of the flexible circuit board 5 is limited and attached to the circuit mounting board 4-1 by the thermal rivet columns 7; further, as shown Figure 2 As shown, a pair of hot riveting columns 7 on the stepped surface in this embodiment are respectively arranged on vertical surfaces close to the first edge support plate 4-2 and the second edge support plate 4-3. When the hot riveting head on the hot riveting device presses the hot riveting columns 7 from top to bottom for hot riveting, the hot riveting position of the corresponding hot riveting head is relatively close to the vertically arranged first edge support plate 4-2 and the second edge support plate 4-3, thereby preventing the hot riveting device from directly applying force to the circuit mounting board 4-1 when hot riveting downward, thereby affecting the installation flatness of the circuit mounting board 4-1.

[0022] Among them, such as Figure 4 As shown, the hot riveting equipment includes a frame 10, a workbench 11 arranged on the frame 10, a lower jig mounting plate 12 detachably mounted on the workbench 11, a fixed tool mounted on the lower jig mounting plate 12, an upper jig mounting plate 14 mounted on the frame 10 and located above the lower jig mounting plate 12 and driven up and down by a driving device, a heating block 15 mounted on the upper jig mounting plate 14 and corresponding to the fixed tool, and a plurality of hot rivet heads 16 mounted at the lower end of the heating block 15; specifically, the driving device in this embodiment can be a driving cylinder mounted in a vertical state on the frame 10, and the upper jig mounting plate 14 is mounted on the piston end below the driving cylinder and is driven to move up and down by the driving cylinder.

[0023] Further, such as Figure 5 As shown, in this embodiment, the lower end of the heating block 15 is provided with a mounting surface 17 corresponding to each stepped surface on the circuit mounting plate 4-1, and the hot rivet head 16 is detachably mounted on the mounting surface 17 by a thread; wherein, the heating block 15 includes a heat transfer portion 15-1 mounted on the upper fixture mounting plate 14, a plurality of mounting holes 15-2 opened on the heat transfer portion 15-1, and an electric heating device 15-3 arranged in the mounting hole 15-2; the hot rivet head 16 is threadedly connected to the heat transfer portion 15-1, and the heating block 15 in this embodiment heats the heat transfer portion 15-1 through the electric heating device 15-3 when in use, and then can indirectly heat a plurality of hot rivet heads 16 simultaneously through the heat transfer portion 15-1; and in order to facilitate the height of the hot rivet head 16 Adjustment and replacement of the hot rivet head 16, the hot rivet head 16 in this embodiment includes a threaded connection part 16-1 whose upper end is threadedly mounted on the heating block 15, a rotation adjustment part 16-2 connected below the threaded connection part 16-1, and a hot rivet part 16-3 connected below the rotation adjustment part 16-2, and a hexagonal boss 18 for rotation of a wrench is provided on the outside of the rotation adjustment part 16-2; since the pair of hot rivet columns 7 in this embodiment are relatively close to each other, the hot rivet head 16 cannot be rotationally adjusted by a wrench after the installation is completed, and a rotation slot 19 is provided on the rotation adjustment part 16-2 in this embodiment; and the installation and adjustment of the hot rivet head 16 can be achieved by inserting a short rod into the rotation slot 19.

[0024] Specifically, such as Figure 6As shown, in this embodiment, a heat rivet groove 20 is provided at the lower end of the heat rivet head 16 corresponding to the vertical heat rivet column 7. The heat rivet groove 20 includes a concave groove 20-1 provided on the lower end surface of the heat rivet head 16 and a fixed extension space 20-2 provided at the lower edge of the groove 20-1 and connected to the groove 20-1. The upper end of the groove 20-1 is offset downward to reduce the melting space in the groove 20-1 to compensate for the fixed extension space 20-2. When the heat rivet is performed, the heat rivet column 7 is melted by the high-temperature heat rivet head 16 and reshaped into a fixed rivet head with a size larger than the positioning hole 8 under the action of the heat rivet head 16, and then the flexible circuit board 5 is pressed and fixed on the rear end surface of the circuit mounting board 4-1 by the fixed rivet head. In this embodiment, in order to make the installation of the flexible circuit board 5 more convenient, At the same time, the flexible circuit board 5 and the circuit mounting board 4-1 are more firmly connected, and a fixed extension space 20-2 is designed in the outer ring connection of the groove 20-1, so that the hot rivet column 7 forms a larger fixed rivet head after being hot-riveted by the hot rivet head 16, and the fixed rivet head formed after the hot rivet column 7 is hot-riveted can further extend to the flexible circuit board 5 outside the positioning hole 8 while limiting the positioning hole 8, thereby increasing the hot riveting strength of the hot rivet column 7 after hot riveting. At the same time, the top of the upper end of the groove 20-1 is offset downward, so that the center thickness of the fixed rivet head formed after the hot rivet column 7 is relatively reduced. After the hot rivet column 7 is melted, the excess molten material in the corresponding groove 20-1 caused by the relative height reduction in the groove 20-1 flows into the fixed extension space 20-2 to form a reinforcement part extending outward.

[0025] Further, such as Figure 5 and Figure 7 As shown, in order to further ensure the accurate positioning of the decorative frame 1 in this embodiment, the fixing tool includes a plurality of positioning blocks 21 arranged on the outer side of the edge of the decorative frame 1. The positioning block 21 is provided with an inclined support surface 22 provided on the upper end surface of the positioning block 21 and corresponding to the outer side of the front end of the decorative frame 1. The inclined support surface 22 is adapted to the front end surface of the decorative frame 1 and is arranged at the lower end of the decorative frame 1 during hot riveting to support the decorative frame 1 and enable the hot riveting column 7 at the rear end of the decorative frame 1 to be arranged in a vertical state when the decorative frame 1 is placed; the inclined support surface 22 supports the lower ends of the first edge support plate 4-2 and the second edge support plate 4-3, and When performing the hot riveting operation, the force exerted by the hot rivet head 16 on the hot rivet column 7 can be indirectly transmitted to the inclined support surface 22 through the first edge support plate 4-2 or the second edge support plate 4-3. The inclined support surface 22 is connected to an outer limiting surface 23 located on the outer side of the decorative frame 1 and extending upward to limit the decorative frame 1. The edge of the decorative frame 1 is limited by the outer limiting surface 23, so that the decorative frame 1 is effectively limited by the outer limiting surface 23 after being supported by the inclined support surface 22, ensuring the accurate positioning of the decorative frame 1, so as to facilitate the accurate hot riveting of the subsequent hot riveting process; further, as Figure 7 and Figure 8As shown, the positioning block 21 includes a rear positioning block 24 arranged at the rear end of the lower jig mounting plate 12, and a downwardly concave sinking groove 25 is provided at the middle end of the inclined support surface 22 on the rear positioning block 24, and an auxiliary block positioning groove 26 is provided at the front end of the rear positioning block 24, which is located at the lower end of the decorative frame 1 and corresponds to the sinking groove 25. The lower jig mounting plate 12 is provided with an auxiliary positioning block 27 that is inserted into the auxiliary block positioning groove 26, and the auxiliary positioning block 27 is provided with a positioning protrusion 28 that protrudes upward and is inserted into the mounting hole 3.

[0026] Furthermore, this embodiment also discloses a method for processing the above-mentioned vehicle lamp frame assembly, comprising the following steps: Step 1: Place the front end of the decorative frame 1 downward on the fixed fixture of the hot riveting equipment, so that the front end of the decorative frame 1 is supported downward on the inclined support surface 22, and the hot riveting studs 7 at the rear end of the circuit mounting plate 4-1 on the decorative frame 1 are arranged in an upward vertical position; Step 2: Move the flexible circuit board 5 downward from the top to the rear end of the circuit mounting board 4-1, and make the positioning holes 8 on the flexible circuit board 5 cover the outside of the heat rivet studs 7. Use the limiting part 9 to fit the flexible circuit board 5 on the rear end of the circuit mounting board 4-1, so that the flexible circuit board 5 is completely attached to the circuit mounting board 4-1. Then, make the positioning holes 8 on the flexible circuit board 5 clamped on the outside of the lowest end of the heat rivet studs 7 to ensure the quality of subsequent heat riveting. Step 3: Start the hot riveting equipment so that the hot riveting head 16 located above the decorative frame 1 on the hot riveting equipment moves downward under the action of the driving device. The hot riveting head 16 gradually moves downward to cover the outside of the hot riveting column 7 and contact the hot riveting column 7; during the downward movement, the high-temperature hot riveting head 16 heats the hot riveting column 7 and melts and deforms the hot riveting column 7 to form a fixed rivet head limited to the outside of the flexible circuit board 5, and then the hot riveting head 16 moves upward to its original position under the action of the driving device.

[0027] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A headlight frame assembly, comprising a frame (1), wherein a mounting cavity (2) is provided at the rear center of the frame (1), and wherein: The center of the decorative frame (1) is provided with a mounting hole (3) penetrating the decorative frame (1) and communicating with the mounting cavity (2); the front end surface of the decorative frame (1) is provided with a thick-walled mounting cavity (4) arranged along the outer periphery of the decorative frame (1) and sunken on the front end surface of the decorative frame (1); the thick-walled mounting cavity (4) includes a circuit mounting plate (4-1) protruding rearward and arranged at the bottom of the thick-walled mounting cavity; the circuit mounting plate (4-1) is arranged in a staggered manner along the outer periphery of the decorative frame (1); a flexible circuit board (5) provided with a plurality of LED light sources and arranged corresponding to the stepped circuit mounting plate (4-1) is installed at the rear end of the circuit mounting plate (4-1); each stepped surface of the circuit mounting plate (4-1) is provided with a light source accommodating hole (6) for accommodating the LED light source on the flexible circuit board (5); the rear end of the circuit mounting plate (4-1) is provided with a thermal rivet column (7) extending rearward; and the flexible circuit board (5) is provided with a positioning hole (8) installed on the outside of the thermal rivet column (7).

2. The vehicle lamp trim frame assembly according to claim 1, wherein: The lower end of the heat riveting column (7) is provided with a limiting portion (9) that is engaged with the positioning hole (8) and is limited in position. The limiting portion (9) limits and fixes the flexible circuit board (5) on the rear end surface of the circuit mounting plate (4-1).

3. The vehicle lamp frame assembly according to claim 1, wherein: At least one pair of heat rivet columns (7) is provided on each stepped surface of the circuit mounting plate (4-1); the thick-wall mounting cavity (4) further comprises a first edge support plate (4-2) provided on the circuit mounting plate (4-1) and close to the mounting hole (3); and a second edge support plate (4-3) provided on the circuit mounting plate (4-1) and away from the mounting hole (3); the pair of heat rivet columns (7) are respectively provided on vertical surfaces close to the first edge support plate (4-2) and the second edge support plate (4-3).

4. A method for processing a vehicle lamp frame assembly, comprising the vehicle lamp frame assembly according to any one of claims 1 to 3, comprising the following steps: Step 1: Place the front end of the decorative frame (1) downward on the fixed fixture of the hot riveting equipment, so that the hot riveting column (7) at the rear end of the circuit mounting plate (4-1) on the decorative frame (1) is in a vertical state; Step 2: Move the flexible circuit board (5) from top to bottom close to the rear end surface of the circuit mounting plate (4-1), and make the positioning hole (8) on the flexible circuit board (5) fit on the outside of the heat rivet column (7) and fit the flexible circuit board (5) to the rear end surface of the circuit mounting plate (4-1) through the limiting portion (9); Step 3: Start the hot riveting device so that the hot riveting head (16) located above the decorative frame (1) on the hot riveting device moves downward under the action of the driving device, and the hot riveting head (16) gradually moves downward to be sleeved on the outside of the hot riveting column (7) and contacts the hot riveting column (7); during the downward movement, the high-temperature hot riveting head (16) heats the hot riveting column (7) and melts and deforms the hot riveting column (7) and limits it to the outside of the flexible circuit board (5), and then the hot riveting head (16) moves upward to its original position under the action of the driving device.

5. The method for processing a vehicle lamp frame assembly according to claim 4, wherein: The hot riveting equipment comprises a frame (10), a workbench (11) arranged on the frame (10), a lower jig mounting plate (12) detachably mounted on the workbench (11), a fixed tool mounted on the lower jig mounting plate (12), an upper jig mounting plate (14) mounted on the frame (10) and located above the lower jig mounting plate (12) and driven to move up and down by a driving device, a heating block (15) mounted on the upper jig mounting plate (14) and arranged corresponding to the fixed tool, and a plurality of hot riveting heads (16) mounted on the lower end of the heating block (15).

6. The method for processing a vehicle lamp frame assembly according to claim 5, wherein: The lower end of the heating block (15) is provided with a mounting surface (17) corresponding to each stepped surface on the circuit mounting plate (4-1); the thermal rivet head (16) is detachably mounted on the mounting surface (17) via a thread; the thermal rivet head (16) comprises a threaded connection portion (16-1) whose upper end is threadedly mounted on the heating block (15); a rotation adjustment portion (16-2) connected below the threaded connection portion (16-1); and a thermal rivet portion (16-3) connected below the rotation adjustment portion (16-2); a hexagonal boss (18) for wrench rotation is provided on the outer side of the rotation adjustment portion (16-2); and a rotation slot (19) penetrating the rotation adjustment portion (16-2) is provided on the rotation adjustment portion (16-2).

7. A method for processing a vehicle lamp frame assembly according to any one of claims 4, 5 or 6, characterized in that: The lower end of the hot rivet head (16) is provided with a hot rivet groove (20) corresponding to the vertical hot rivet column (7). The hot rivet groove (20) comprises a groove (20-1) provided on the lower end surface of the hot rivet head (16) and arranged in an inwardly concave manner, and a fixed extension space (20-2) provided at the lower end edge of the groove (20-1) and communicating with the groove (20-1). The upper end of the groove (20-1) is offset downward to reduce the melting space in the groove (20-1) to compensate for the fixed extension space (20-2). The method for processing a vehicle lamp frame assembly according to claim 5 is characterized in that the heating block (15) includes a heat transfer portion (15-1) mounted on an upper fixture mounting plate (14), a plurality of mounting holes (15-2) provided on the heat transfer portion (15-1), and an electric heating device (15-3) provided in the mounting holes (15-2).

8. The method for processing a vehicle lamp frame assembly according to claim 4, wherein: The fixing fixture comprises a plurality of positioning blocks (21) arranged on the outer side of the edge of the decorative frame (1), the positioning block (21) being provided with an inclined support surface (22) provided on the upper end surface of the positioning block (21) and corresponding to the outer side of the front end of the decorative frame (1), the inclined support surface (22) being supported on the lower ends of the first edge support plate (4-2) and the second edge support plate (4-3), and the inclined support surface (22) being connected to an outer limiting surface (23) located on the outer side of the decorative frame (1) and extending upwards to limit the decorative frame (1).

9. The method for processing a vehicle lamp frame assembly according to claim 9, wherein: The positioning block (21) includes a rear positioning block (24) arranged at the rear end of the lower fixture mounting plate (12). A downwardly concave sinking groove (25) is provided at the middle end of the upper inclined support surface (22) of the rear positioning block (24), and an auxiliary block positioning groove (26) is provided at the front end of the rear positioning block (24), which is located at the lower end of the decorative frame (1) and is arranged corresponding to the sinking groove (25). The lower fixture mounting plate (12) is provided with an auxiliary positioning block (27) that is inserted into the auxiliary block positioning groove (26), and the auxiliary positioning block (27) is provided with a positioning protrusion (28) that protrudes upward and is engaged in the mounting hole (3).

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