A vehicle lamp frame connection device

Abstract

The application discloses a kind of car lamp frame connecting devices, belong to the technical field of automobile headlamp, including lamp shell, the back of lamp shell is equipped with one main installation leg and at least two auxiliary installation legs, the main installation leg is equipped with reference positioning hole, for cooperation with the main positioning pin on the frame, realize the X direction, Y direction, Z direction three direction reference positioning of lamp shell, the auxiliary installation leg includes installation base plate, the installation base plate is equipped with adjusting installation hole and bolt via hole arranged with adjusting installation hole interval. In the application, by setting the pre-positioning groove on the force side in the middle of the adjusting installation hole, the rod part of the auxiliary positioning pin is formed to form a close support, in the initial stage of assembly, this structure can effectively receive the gravity and assembly reaction force of the lamp shell, so that the lamp shell can maintain a stable posture before the bolt is tightened, without artificial continuous support, so as to free the hands of the operator, significantly improve the operation convenience and efficiency of car lamp assembly.

Description

Technical Field

[0001] This invention belongs to the field of automotive lighting technology, and particularly relates to a lighting frame connection device. Background Technology

[0002] In the automotive manufacturing industry, headlights, as key exterior and functional components, directly affect lighting performance, aesthetic consistency, and driving safety due to the stability of their mounting structure. Headlights are typically secured to the vehicle body using mounting legs on the back of the headlight housing and locating pins, bolts, or other structural elements on the body panel. However, due to the significant weight of headlights, traditional auxiliary positioning structures, often simple cylindrical pin connections, lack effective temporary restraint capabilities. This causes headlights to slip, tilt, or wobble during assembly, making it difficult to maintain a stable posture, hindering subsequent bolt tightening, and impacting assembly efficiency.

[0003] To address the aforementioned issues, existing technologies propose distributing the weight of the headlights by setting up a headlight frame and using a structure that combines locating pins with an elastic support plate to achieve initial positioning. However, the locating pins in such structures are mostly rigid cylindrical structures and lack limiting designs for the force-bearing side. They cannot effectively bear the weight of the headlights to form reliable temporary support, and manual support is still required during assembly. Furthermore, their adjustment capabilities are limited, making it difficult to fully compensate for manufacturing errors in the body sheet metal, resulting in insufficient assembly compatibility. Summary of the Invention

[0004] The purpose of this invention is to provide a vehicle headlight frame connection device to solve the problems in traditional technology where the positioning pins are mostly rigid cylindrical structures and lack limiting design for the force-bearing side, which cannot effectively bear the weight of the vehicle headlight to form a reliable temporary support, and still require manual support during assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vehicle headlight frame connection device includes a headlight housing. The back of the headlight housing is provided with a main mounting leg and at least two auxiliary mounting legs. The main mounting leg has a reference positioning hole for cooperating with a main positioning pin on the vehicle frame to achieve three-way reference positioning of the headlight housing in the X, Y and Z directions. The auxiliary mounting legs include a mounting base plate. The mounting base plate has an adjustment mounting hole and bolt through holes arranged at intervals with the adjustment mounting hole. The bolt through holes are used to cooperate with fixing bolts to fix the headlight housing on the vehicle frame.

[0007] The adjustment mounting hole has an oblong hole structure, and the adjustment mounting hole is equipped with an auxiliary positioning pin. The long axis of the adjustment mounting holes on the multiple auxiliary mounting legs is consistent and they are all arranged along the width of the vehicle body.

[0008] The adjustment mounting hole is provided with a pre-positioning groove in the middle. The pre-positioning groove is located on the force-bearing side when the lamp housing is hooked onto the main positioning pin and the auxiliary positioning pin. It is used to bear the weight of the lamp housing and the assembly reaction force to form a stable temporary limit.

[0009] Both ends of the prepositioning groove are provided with smoothly transitioning guide slopes, and the width of the prepositioning groove is greater than the short axis width of the adjustment mounting hole.

[0010] The auxiliary positioning pin can enter the adjustment mounting hole through the pre-positioning groove and slide along its long axis. The rod of the auxiliary positioning pin can be inserted into the pre-positioning groove, and a temporary pre-position is formed by the fit between the pre-positioning groove and the auxiliary positioning pin.

[0011] The adjustment mounting hole and the auxiliary positioning pin cooperate to form an anti-detachment structure, which restricts the auxiliary positioning pin from detaching axially.

[0012] Preferably, the main mounting leg and the auxiliary mounting leg are integrally formed with the lamp housing, and the root of the mounting base is integrally formed with a reinforcing rib, with at least one reinforcing rib arranged at intervals along the length direction of the mounting base.

[0013] Preferably, the adjustment mounting hole includes a narrow opening that penetrates the mounting substrate and a wide groove that is located inside the mounting substrate, with a limiting step surface formed between the narrow opening and the wide groove.

[0014] Preferably, the auxiliary positioning pin includes a pin rod portion and an anti-detachment head. The diameter of the anti-detachment head is larger than the diameter of the pin rod portion. The diameter of the anti-detachment head is smaller than the width of the wide groove section but larger than the width of the narrow opening section. The limiting step surface and the anti-detachment head cooperate to form a complete anti-detachment structure, thereby achieving axial anti-detachment.

[0015] Preferably, the prepositioning groove is located in the middle of the narrow section, the width of the prepositioning groove is less than the width of the wide section and greater than or equal to the diameter of the anti-detachment head, the anti-detachment head can enter the wide section through the prepositioning groove, and the pin part is engaged in the prepositioning groove to form a preposition.

[0016] Preferably, the narrow section forms a transition fit with the pin rod portion, the wide groove section forms a clearance fit with the anti-detachment head, and the top of the anti-detachment head is provided with a guide cone surface, which is adapted to the guide slope of the pre-positioning groove.

[0017] Preferably, the outer edge of the narrow section of the adjustment mounting hole is provided with a chamfer, and the chamfer is consistent with the inclination direction of the guide slope.

[0018] Preferably, the inner wall of the prepositioning groove is provided with anti-slip teeth, which are evenly distributed along the circumference of the prepositioning groove and smoothly transition with the guide slope.

[0019] Preferably, a shock-absorbing rubber pad is provided between the mounting base plate and the body sheet metal. The shock-absorbing rubber pad has a clearance hole corresponding to the adjustment mounting hole and a through hole corresponding to the bolt through hole. The edge of the clearance hole fits with the inlet end of the adjustment mounting hole, and the edge of the shock-absorbing rubber pad has a sealing lip.

[0020] Preferably, the number of auxiliary mounting legs is three, which are symmetrically arranged in the upper middle and lower sides of the lamp housing.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In this invention, a pre-positioning groove is set in the middle of the adjustment mounting hole on the force-bearing side, which, together with the rod of the auxiliary positioning pin, forms a close-fitting support. In the initial stage of assembly, this structure can effectively bear the weight of the lamp housing and the assembly reaction force, so that the lamp housing can maintain a stable posture before the bolts are tightened, without the need for continuous manual support, thereby freeing the operator's hands and significantly improving the operational convenience and efficiency of vehicle lamp assembly.

[0023] 2. In this invention, the adjustment mounting hole adopts a T-shaped cross-section design that combines a narrow opening section and a wide groove section. It is equipped with an auxiliary positioning pin with a pin rod and an anti-detachment head. Through the axial limiting cooperation between the limiting step surface and the anti-detachment head, the path of the auxiliary positioning pin detaching along the axial direction is effectively blocked, ensuring the connection reliability of the auxiliary positioning pin during vehicle operation and preventing positioning failure caused by vibration.

[0024] 3. In this invention, the adjustment mounting holes on multiple auxiliary mounting legs are aligned along their long axis and arranged along the width of the vehicle body. Combined with the transition fit between the pin and the narrow section, the lamp housing can still be finely adjusted along its long axis after temporary positioning. This effectively absorbs dimensional errors in the manufacturing process of the body sheet metal and lamp housing, ensures precise alignment between the bolt through holes and the threaded holes in the body, reduces assembly difficulty, and avoids structural damage caused by rigid assembly.

[0025] 4. In this invention, the anti-slip teeth provided on the inner wall of the pre-positioning groove increase the friction with the auxiliary positioning pin, further enhancing the stability of the temporary pre-positioning and reducing shaking during assembly. At the same time, the matching design of the guide slope, the chamfer of the orifice and the guide cone surface forms a continuous and smooth guide channel, reducing the insertion resistance of the auxiliary positioning pin and making the assembly process smoother. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a vehicle headlight frame connection device proposed in this invention;

[0027] Figure 2 This is a schematic diagram showing the separation state of the adjustment mounting hole and auxiliary positioning pin of the vehicle headlight frame connecting device proposed in this invention;

[0028] Figure 3 This is a schematic diagram of the limiting step surface structure of a vehicle headlight frame connecting device proposed in this invention;

[0029] Figure 4 This is a schematic diagram showing the mating state of the adjustment mounting hole and auxiliary positioning pin of the vehicle headlight frame connecting device proposed in this invention;

[0030] Figure 5 This is a schematic diagram of the shock-absorbing rubber pad and sealing lip structure of a vehicle headlight frame connection device proposed in this invention.

[0031] In the diagram: 1. Lamp housing; 2. Main mounting leg; 3. Auxiliary mounting leg; 4. Mounting base plate; 5. Reinforcing rib; 6. Adjustment mounting hole; 7. Narrow opening section; 8. Wide groove section; 9. Limiting step surface; 10. Pre-positioning groove; 11. Guide slope; 12. Auxiliary positioning pin; 13. Pin rod part; 14. Anti-detachment head; 15. Guide cone surface; 16. Hole chamfer; 17. Shock-absorbing rubber pad; 18. Sealing lip; 19. Bolt through hole. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Reference Figures 1-5 A vehicle headlight frame connection device includes a headlight housing 1. The back of the headlight housing 1 is provided with a main mounting leg 2 and at least two auxiliary mounting legs 3. Based on the force balance design, there are three auxiliary mounting legs 3, which are symmetrically arranged in the upper middle and lower sides of the headlight housing 1, so that the headlight housing 1 forms a three-point support structure when it is hooked, which disperses the gravity during the assembly process and avoids positioning displacement caused by the force concentration on a single mounting leg.

[0034] The main mounting leg 2 has a reference positioning hole, which is used to cooperate with the main positioning pin on the frame to realize the X, Y and Z three-way reference positioning of the lamp housing 1. The inner wall of the reference positioning hole is precision ground and adopts a transition fit design with the main positioning pin. The three-way displacement is restricted by the tight fit relationship of the structure, providing a precise reference for subsequent auxiliary positioning and ensuring the overall assembly accuracy.

[0035] The auxiliary mounting leg 3 includes a mounting base plate 4. Both the main mounting leg 2 and the auxiliary mounting leg 3 are integrally formed with the lamp housing 1. They are made of modified PP material using an injection molding process to balance the requirements of lightweighting and structural rigidity, while eliminating positioning errors caused by assembly gaps and improving connection stability. The base of the mounting base plate 4 is integrally formed with reinforcing ribs 5. At least one reinforcing rib 5 is arranged at intervals along the length of the mounting base plate 4. The interval is designed according to the length of the mounting base plate 4 and the stress distribution characteristics to ensure that the fastening force and vibration load are evenly distributed and to prevent the base plate from bending and deforming.

[0036] The mounting base plate 4 has an adjustment mounting hole 6 and bolt through holes 19 spaced apart from the adjustment mounting hole 6. The spaced arrangement makes the tightening force of the fixing bolt and the positioning force of the auxiliary positioning pin 12 form a cooperative force system. The bolt through holes 19 are used to cooperate with the fixing bolt to fix the lamp housing 1 on the vehicle frame. The bolt through holes 19 have a chamfered edge to reduce the insertion resistance of the fixing bolt and avoid structural damage caused by rigid friction between the bolt and the hole wall.

[0037] The adjustment mounting hole 6 has an oblong shape and is fitted with an auxiliary positioning pin 12. The adjustment mounting holes 6 on the multiple auxiliary mounting legs 3 have the same long axis direction and are arranged along the width of the vehicle body. The long axis direction is adapted to the width of the vehicle body, providing adjustment space for dimensional errors during the vehicle body assembly process. The short axis direction is adapted to the structure of the subsequent auxiliary positioning pin 12, limiting invalid displacement in non-adjustment directions and ensuring adjustment accuracy.

[0038] The middle of the adjustment mounting hole 6 is provided with a pre-positioning groove 10. The pre-positioning groove 10 is located on the force-bearing side when the lamp housing 1 is hooked onto the main positioning pin and the auxiliary positioning pin 12. This side is the main bearing surface of gravity and assembly reaction force during the assembly of the lamp housing 1. The groove structure forms a targeted support to bear the gravity and assembly reaction force of the lamp housing 1 to form a stable temporary limit. The temporary limit can free the operator's hands, provide convenient operating conditions for the subsequent installation of fixing bolts, and improve assembly efficiency.

[0039] The pre-positioning groove 10 located at the upper part of the lamp housing 1 opens towards the inside of the lamp housing 1, and the pre-positioning groove 10 located at the lower part of the lamp housing 1 opens towards the outside of the lamp housing 1. This is adapted to the force direction when the lamp housing is hooked. By utilizing the weight of the lamp housing itself, the upper part forms a hook-type inner hook and the lower part forms a fulcrum-type outer support. This automatically generates a centering torque when the lamp housing is hooked, so that the lamp housing 1 fits tightly against the vehicle body mounting surface, achieving a stable hooking form with the upper hook and the lower press.

[0040] Both ends of the pre-positioning groove 10 are provided with smooth transition guide slopes 11. The guide slopes 11 adopt an arc transition design to avoid stress concentration and reduce the contact resistance when the auxiliary positioning pin 12 slides in. The width of the pre-positioning groove 10 is greater than the short axis width of the adjustment mounting hole 6, which ensures that the anti-detachment head 14 of the auxiliary positioning pin 12 can pass smoothly and avoids lateral shaking after positioning, thus balancing passability and stability.

[0041] The auxiliary positioning pin 12 can enter the adjustment mounting hole 6 through the pre-positioning groove 10 and slide along its long axis. During the sliding process, the complementary structure of the guide inclined surface 11 and the guide cone surface 15 of the auxiliary positioning pin 12 is used to achieve smooth guidance and reduce the assembly difficulty. The rod of the auxiliary positioning pin 12 can be inserted into the pre-positioning groove 10. The temporary pre-positioning is formed by the fit between the pre-positioning groove 10 and the auxiliary positioning pin 12. The fit support adopts a surface contact design to increase the force-bearing area, improve the stability of the pre-positioning, and prevent the lamp housing 1 from shifting during the assembly process.

[0042] The adjustment mounting hole 6 and the auxiliary positioning pin 12 cooperate to form an anti-detachment structure, which restricts the auxiliary positioning pin 12 from detaching along the axial direction. The anti-detachment structure avoids positioning failure caused by vibration during vehicle operation by mechanical limiting, thereby improving the reliability of the device.

[0043] The adjustment mounting hole 6 includes a narrow opening 7 that penetrates the mounting base plate 4 and a wide groove 8 located inside the mounting base plate 4. A limiting step surface 9 is formed between the narrow opening 7 and the wide groove 8. The limiting step surface 9 is chamfered to eliminate stress concentration caused by sharp edges. At the same time, it fits tightly with the anti-detachment head 14 of the auxiliary positioning pin 12. Through the axial limiting cooperation between the limiting step surface 9 and the anti-detachment head 14, the path of the auxiliary positioning pin 12 to detach along the axial direction is blocked, ensuring the reliability of the connection.

[0044] The auxiliary positioning pin 12 includes a pin rod portion 13 and an anti-detachment head 14. The diameter of the anti-detachment head 14 is larger than the diameter of the pin rod portion 13. The diameter of the anti-detachment head 14 is smaller than the width of the wide groove section 8 and larger than the width of the narrow opening section 7. This ensures that the anti-detachment head 14 can enter the wide groove section 8 for assembly, and also achieves the anti-detachment function through the dimensional difference with the narrow opening section 7. The limiting step surface 9 and the anti-detachment head 14 cooperate to form a complete anti-detachment structure to achieve axial anti-detachment. The complete anti-detachment structure combines transition fit and mechanical limiting, taking into account both assembly convenience and usage stability.

[0045] The pre-positioning groove 10 is located in the middle of the narrow section 7. The width of the pre-positioning groove 10 is less than the width of the wide section 8 and greater than or equal to the diameter of the anti-detachment head 14, ensuring that the anti-detachment head 14 can smoothly pass through the groove and enter the wide section 8. At the same time, the fit between the groove width and the anti-detachment head 14 prevents radial movement after positioning. The anti-detachment head 14 can enter the wide section 8 through the pre-positioning groove 10. The pin part 13 is engaged in the pre-positioning groove 10 to form a pre-position. In the pre-positioned state, the pin part 13 forms a frictional engagement with the anti-slip teeth on the inner wall of the groove, further improving the stability of the temporary positioning.

[0046] The narrow section 7 and the pin section 13 form a transition fit. The transition fit takes into account both positioning stability and smooth adjustment. It avoids shaking caused by excessive looseness and prevents the fit from affecting error adjustment by excessive tightness. The wide groove section 8 and the anti-detachment head 14 form a clearance fit. The clearance fit provides the anti-detachment head 14 with room to move, ensuring that the auxiliary positioning pin 12 slides smoothly along the long axis of the adjustment mounting hole 6 without interference. The top of the anti-detachment head 14 is provided with a guide cone surface 15. The guide cone surface 15 is adapted to the guide slope surface 11 of the pre-positioning groove 10. The adaptation design makes the two form a continuous guide channel, guiding the anti-detachment head 14 to slide smoothly into the pre-positioning groove 10 and reducing assembly resistance.

[0047] The outer edge of the narrow section 7 of the adjustment mounting hole 6 is provided with a chamfer 16. The chamfer 16 is in the same direction as the guide slope 11. The same direction of inclination forms a continuous guide path, avoiding guide dead angles and further improving the smoothness of the insertion of the auxiliary positioning pin 12.

[0048] The inner wall of the pre-positioning groove 10 is provided with anti-slip teeth. The anti-slip teeth are evenly distributed along the circumference of the pre-positioning groove 10. The even distribution ensures balanced friction and avoids structural damage caused by excessive local force. It also smoothly transitions with the guide slope 11. The smooth transition design avoids the formation of sharp edges on the anti-slip teeth, reduces the resistance when the auxiliary positioning pin 12 slides in, and prevents stress concentration.

[0049] A shock-absorbing rubber pad 17 is provided between the mounting base plate 4 and the vehicle body sheet metal. The shock-absorbing rubber pad 17 is made of EPDM material, which has both good shock absorption performance and weather resistance, and is suitable for the vibration environment during vehicle operation and outdoor use scenarios. The shock-absorbing rubber pad 17 has clearance holes corresponding to the adjustment mounting holes 6 and through holes corresponding to the bolt through holes 19. The edge of the clearance hole is designed to fit with the inlet end of the adjustment mounting hole 6 to avoid the shock-absorbing rubber pad 17 affecting the sliding adjustment of the auxiliary positioning pin 12, while ensuring sealing performance. The edge of the clearance hole fits with the inlet end of the adjustment mounting hole 6. The edge of the shock-absorbing rubber pad 17 is provided with a sealing lip 18. The sealing lip 18 is designed to be elastic and fits tightly with the vehicle body sheet metal to prevent moisture, dust and other impurities from entering the installation gap, thus playing a sealing and protective role, while compensating for the small gaps on the mounting surface.

[0050] During assembly, the operator aligns the main mounting leg 2 on the back of the lamp housing 1 with the main positioning pin on the vehicle frame, so that the reference positioning hole cooperates with the main positioning pin to achieve three-way reference positioning of the lamp housing 1 in the X, Y and Z directions.

[0051] Subsequently, the adjustment mounting holes 6 on each auxiliary mounting leg 3 are aligned with the auxiliary positioning pins 12 on the body sheet metal. The chamfer 16 at the entrance of the adjustment mounting hole 6 and the guide slopes 11 on both sides of the pre-positioning groove 10, along with the guide cone surface 15 at the top of the auxiliary positioning pin 12, allow the auxiliary positioning pin 12 to smoothly enter the adjustment mounting hole 6.

[0052] During the process of the auxiliary positioning pin 12 entering the adjustment mounting hole 6, its anti-detachment head 14 enters the wide groove section 8 through the pre-positioning groove 10, while the pin rod part 13 is inserted into the pre-positioning groove 10 under the guidance of the guide slope 11. With the help of the structural shape of the pre-positioning groove 10 and the friction of the anti-slip teeth, the lamp housing 1 forms a stable temporary pre-position under the action of gravity and assembly reaction force. At this time, the lamp housing 1 can maintain a fixed posture without manual support.

[0053] After the temporary positioning is completed, the operator can finely adjust the position of the lamp housing 1 along the long axis of the adjustment mounting hole 6 according to the actual assembly position of the lamp housing 1 to compensate for the assembly error of the body sheet metal.

[0054] After the position is adjusted to the optimal state, the fixing bolt is screwed into the threaded hole of the body sheet metal through the bolt through hole 19 to achieve the final fastening of the lamp housing 1.

[0055] During the fastening process, the shock-absorbing rubber pad 17 between the mounting base plate 4 and the body sheet metal is compressed, and its sealing lip 18 fits tightly against the body sheet metal, thereby achieving the dual functions of shock absorption and sealing protection.

[0056] Ultimately, through the benchmark positioning of the main positioning pin, the temporary limiting and adjustment of the auxiliary positioning pin 12, and the tightening effect of the fixing bolts, this device achieves precise, stable, and reliable installation of the lamp housing 1.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A vehicle headlight frame connecting device, comprising a headlight housing (1), wherein the back of the headlight housing (1) is provided with a main mounting leg (2) and at least two auxiliary mounting legs (3), and the main mounting leg (2) is provided with a reference positioning hole for cooperating with a main positioning pin on the vehicle frame to achieve three-way reference positioning of the headlight housing (1) in the X, Y, and Z directions, characterized in that, The auxiliary mounting leg (3) includes a mounting base plate (4), on which an adjustment mounting hole (6) and bolt through holes (19) are arranged at intervals from the adjustment mounting hole (6). The bolt through holes (19) are used to cooperate with the fixing bolts to fix the lamp housing (1) on the vehicle frame. The adjustment mounting hole (6) is a waist-shaped hole structure. The adjustment mounting hole (6) is equipped with an auxiliary positioning pin (12). The adjustment mounting holes (6) on the multiple auxiliary mounting legs (3) have the same long axis direction and are arranged along the width direction of the vehicle body. The adjustment mounting hole (6) is provided with a pre-positioning groove (10) in the middle. The pre-positioning groove (10) is located on the force-bearing side when the lamp housing (1) is hooked onto the main positioning pin and the auxiliary positioning pin (12). It is used to bear the weight of the lamp housing (1) and the assembly reaction force to form a stable temporary limit. Both ends of the prepositioning groove (10) are provided with smooth transition guide slopes (11), and the width of the prepositioning groove (10) is greater than the short axis width of the adjustment mounting hole (6). The auxiliary positioning pin (12) can enter the adjustment mounting hole (6) through the prepositioning groove (10) and slide along its long axis. The rod part of the auxiliary positioning pin (12) can be inserted into the prepositioning groove (10). The temporary prepositioning is formed by the fit between the prepositioning groove (10) and the auxiliary positioning pin (12). The adjustment mounting hole (6) and the auxiliary positioning pin (12) cooperate to form an anti-detachment structure, which restricts the auxiliary positioning pin (12) from detaching axially; The adjustment mounting hole (6) includes a narrow opening section (7) that penetrates the mounting substrate (4) and a wide groove section (8) located inside the mounting substrate (4), and a limiting step surface (9) is formed between the narrow opening section (7) and the wide groove section (8). The auxiliary positioning pin (12) includes a pin rod part (13) and an anti-detachment head (14). The diameter of the anti-detachment head (14) is larger than the diameter of the pin rod part (13). The diameter of the anti-detachment head (14) is smaller than the width of the wide groove section (8) and larger than the width of the narrow opening section (7). The limiting step surface (9) and the anti-detachment head (14) cooperate to form a complete anti-detachment structure to achieve axial anti-detachment.

2. The vehicle headlight frame connecting device according to claim 1, characterized in that, The main mounting leg (2) and the auxiliary mounting leg (3) are integrally formed with the lamp housing (1). The root of the mounting base plate (4) is integrally formed with a reinforcing rib (5), and at least one reinforcing rib (5) is arranged at intervals along the length direction of the mounting base plate (4).

3. The vehicle headlight frame connecting device according to claim 1, characterized in that, The prepositioning groove (10) is located in the middle of the narrow section (7). The width of the prepositioning groove (10) is less than the width of the wide section (8) and greater than or equal to the diameter of the anti-detachment head (14). The anti-detachment head (14) can enter the wide section (8) through the prepositioning groove (10). The pin (13) is engaged in the prepositioning groove (10) to form a preposition.

4. The vehicle headlight frame connecting device according to claim 1, characterized in that, The narrow section (7) forms a transition fit with the pin (13), the wide groove section (8) forms a clearance fit with the anti-detachment head (14), the top of the anti-detachment head (14) is provided with a guide cone surface (15), and the guide cone surface (15) is adapted to the guide slope (11) of the prepositioning groove (10).

5. A vehicle headlight frame connecting device according to claim 1, characterized in that, The outer edge of the narrow section (7) of the adjustment mounting hole (6) is provided with a chamfer (16), and the chamfer (16) is consistent with the inclination direction of the guide slope (11).

6. A vehicle headlight frame connecting device according to claim 1, characterized in that, The inner wall of the prepositioning groove (10) is provided with anti-slip teeth, which are evenly distributed along the circumference of the prepositioning groove (10) and smoothly transition with the guide slope (11).

7. A vehicle headlight frame connecting device according to claim 1, characterized in that, A shock-absorbing rubber pad (17) is provided between the mounting base plate (4) and the body sheet metal. The shock-absorbing rubber pad (17) has a clearance hole corresponding to the adjustment mounting hole (6) and a through hole corresponding to the bolt through hole (19). The edge of the clearance hole fits with the inlet end of the adjustment mounting hole (6). The edge of the shock-absorbing rubber pad (17) is provided with a sealing lip (18).

8. A vehicle headlight frame connecting device according to claim 1, characterized in that, The number of auxiliary mounting legs (3) is 3, which are symmetrically arranged in the upper middle and lower sides of the lamp housing (1).

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