Headlamp supporting structure

Abstract

The invention relates to an automobile headlamp supporting and stabilizing structure which mainly solves the problem of headlamp dislocation caused by insufficient strength of an automobile body mounting point. The structure comprises a supporting bracket arranged below a headlamp body, a first end of the supporting bracket is connected with the headlamp through a positioning pin and a screw, and a second end of the supporting bracket is fixed on a vehicle body front bumper beam mounting plate through a bolt; two supporting ribs are arranged at the bottom of the support and are in 0.1 mm clearance fit with the top of the mounting plate, and Z-direction main bearing support is provided. According to the double-mode supporting mechanism, supporting ribs are in clearance fit to bear dynamic loads, and bolt connection provides rigid fixation; according to the unbalance loading prevention design, the rectangular supporting face is located in the Z-direction projection range of the gravity center of the headlamp, and overturning torque is eliminated; the structure is strengthened, and the star-shaped / circular reinforcing ribs disperse more than 70% of the gravity of the headlamp. The structure can share stress of vehicle body mounting points, vehicle body deformation caused by insufficient vehicle body strength of local vehicle body mounting points is avoided, the risk of lamp overturning in assembly is zero, and the structure is suitable for light-weight vehicle bodies with high-integration-level headlamps.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile lighting, in particular to a front headlamp support structure. BACKGROUND

[0002] The current automobile front headlamp has a complex internal structure and a high degree of functional integration, resulting in an increasing weight of the headlamp, and a higher requirement for the rigidity and strength of the vehicle body load-bearing member for fixing the headlamp. Due to the material and structural limitations of the vehicle body, the strength cannot be improved too much. Under the condition of long time and especially rough road, the deformation of the vehicle body caused by the weight of the headlamp will affect the position of the headlamp, and further affect the lighting performance of the headlamp, causing a vehicle hidden danger.

[0003] In the related art, the scheme for dealing with the deformation of the vehicle body mainly increases the mounting hole of the headlamp on the headlamp beam or the front bumper anti-sag support to increase the support point and share the weight of the headlamp, thereby reducing the stress of the local mounting point of the vehicle body.

[0004] In the related art, in order to solve the problem of deformation of the vehicle body, the mounting point of the headlamp is increased on the headlamp beam or the front bumper anti-sag support to share the stress of the mounting point of the vehicle body, but there are two problems. First, the installation process of the headlamp is prone to turning the headlamp, which affects the installation precision. Second, the anti-sag support is installed on the front end frame of the vehicle body, which is a plastic support and a cantilever beam structure, and also has a risk of large deformation. SUMMARY

[0005] The purpose of the present application is to provide a front headlamp support structure, which overcomes the defects of the prior art and solves the problem of deformation of the local mounting point of the vehicle body due to insufficient strength of the vehicle body, which affects the lighting performance of the front headlamp.

[0006] To this end, the present application provides a front headlamp support structure. The front headlamp assembly is composed of a front headlamp body and a support bracket. The support bracket is located below the front headlamp body, and the first end thereof is positioned by a positioning pin and a positioning hole below the lamp shell and is fixedly connected to the front headlamp body by a screw. The second end of the support bracket is fastened to the front bumper beam mounting plate of the vehicle body by a bolt. The bottom of the support bracket is provided with at least two support ribs, and the support plane of the support rib is gap-fitted with the top plane of the front bumper beam mounting plate of the vehicle body to provide Z-direction support force to bear the gravity of the front headlamp body.

[0007] As a preferred technical solution of the present application, the gap between the support plane of the support rib and the top plane of the front bumper beam mounting plate of the vehicle body is 0.1 mm.

[0008] As a preferred technical scheme of the present application, the second end of the support bracket is provided with a bracket mounting hole one, which is fixed by a bolt in the X direction with the front beam mounting plate of the vehicle body.

[0009] As a preferred technical scheme of the present application, the support bracket adopts a cross-shaped and / or circular reinforcing rib structure.

[0010] As a preferred technical scheme of the present application, the connecting surface of the support bracket and the front headlamp body is a rectangular support surface.

[0011] As a preferred technical scheme of the present application, the rectangular support surface is located within the projection range of the center of gravity of the front headlamp body in the Z direction.

[0012] As a preferred technical scheme of the present application, the support bracket is provided with a main positioning hole matched with the positioning pin, for realizing accurate positioning of the support bracket and the front headlamp body.

[0013] As a preferred technical scheme of the present application, the support bracket is provided with a waist-shaped auxiliary positioning hole matched with the positioning pin, for realizing accurate positioning of the support bracket and the front headlamp body.

[0014] As a preferred technical scheme of the present application, the support bracket is fixed to the Z-direction lower lamp shell of the front headlamp body by four mounting holes.

[0015] As a preferred technical scheme of the present application, the four mounting holes are respectively a bracket mounting hole two, a bracket mounting hole three, a bracket mounting hole four and a bracket mounting hole five, which are arranged at the four corners of the support bracket.

[0016] The front headlamp support structure provided by the present application is characterized in that the support bracket of the front headlamp is located below the front headlamp, is supported on the sheet metal of the vehicle body beam mounting plate through the support rib of the bracket, can well support in the Z direction, in addition, the support bracket is fastened to the vehicle body beam mounting plate through the mounting bolt, also synchronously plays a Z-direction supporting role, shares the bearing capacity of other mounting points of the front headlamp, and reduces the deformation amount of the vehicle body.

[0017] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the present application form a part thereof, and serve to provide further understanding of the present application, the illustrative embodiments of the present application and its description serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings: The following drawings Figures 1-5 Some lines are blurred, please provide the inventor with a clear line drawing or CAD original drawing.

[0019] Figure 1 is a structural schematic view of an automobile headlamp support structure provided by the present application; Figure 2 is a side view of an automobile headlamp support structure provided by the present application; Figure 3 is an assembly view of an automobile headlamp support structure provided by the present application; Figure 4 is a component view of an automobile headlamp support structure provided by the present application; Figure 5 is a partial enlarged view of an automobile headlamp support structure provided by the present application; The explanation of each reference numeral in the figure is as follows: 1, headlamp assembly; 11, support bracket; 12, headlamp body; 111, bracket support rib; 112, bracket mounting hole one; 113, bracket main positioning hole; 114, waist-type auxiliary positioning hole; 115, bracket mounting hole two; 116, bracket mounting hole three; 117, bracket mounting hole four; 118, bracket mounting hole five; 2, fender assembly; 3, vehicle body front protection cross beam; 31, cross beam mounting plate; 4, headlamp cross beam; 5, front end frame; 6, anti-sinking bracket; 7, bolt. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] As shown in Figures 1-5 , the headlamp support structure of the present application is arranged at the position of the headlamp assembly 1, which comprises two parts of the support bracket 11 and the headlamp body 12. Among them, the support bracket 11 is located below the headlamp body 12, is positioned with the headlamp, and is fastened on the lamp shell below the headlamp Z direction by screws; the other end of the support bracket 11 is fastened on the mounting plate of the vehicle body front protection cross beam 3 by the bolt 7, and the Z direction of the bracket is supported on the cross beam mounting plate 31 by two ribs.

[0022] Specifically, the support bracket 11 is connected with the two positioning pins below the lamp shell of the headlamp body 12 through the bracket main positioning hole 113 and the waist-type auxiliary positioning hole 114, respectively, to realize the accurate positioning of the support bracket 11 at the position of the whole lamp, and the support bracket 11 is fastened below the headlamp body 12 by four screws through the four mounting holes (bracket mounting hole two 115, bracket mounting hole three 116, bracket mounting hole four 117, and bracket mounting hole five 118) on the bracket, to realize the mounting and fixing of the support bracket 11 and the headlamp body 12.

[0023] Wherein, the support bracket 11 is located below the headlamp body 12, and is positioned by a positioning pin and fastened to the lamp shell below the headlamp Z by a screw; the other end of the support bracket 11 is fastened to the mounting plate of the front body beam 3 by a bolt 7, and the bracket Z is supported by two ribs on the mounting plate 31 to play a Z-direction supporting role.

[0024] The main positioning hole 113 is a circular hole with a size of 8 mm, and the auxiliary positioning hole 114 is a waist-shaped hole with a size of 10*6 mm, which forms an interference fit + floating compensation with the metal positioning pin (8 mm) of the headlamp body 12, and the installation tolerance is ±0.5 mm. Four M5 screws pass through the bracket mounting holes (115-118) and are locked to the metal insert nut at the bottom of the lamp shell with a torque of 8 Nm, forming a rigid connection.

[0025] Two 2 mm wide support ribs 111 are designed on the body of the support bracket 11, and the support plane of the support rib is matched with the top plane of the front beam mounting plate 31 with a gap of 0.1 mm (as shown in Figure 5 After the support rib plane is attached to the top plane of the beam mounting plate 31, the support bracket 11 is connected and fixed to the beam mounting plate 31 in the X direction through the bracket mounting hole one 112 and the bolt 7, realizing the connection of the support bracket and the vehicle body, and applying a locking force of 25 Nm to constrain the X-direction displacement. The support bracket is hard-fixed with the vehicle body, and further supports the headlamp body 12 in the Z direction to prevent it from sinking. When the vehicle is jolted, it is converted to a surface contact support, bearing 70% of the sinking force (about 120 N) of the headlamp body.

[0026] In addition, the support surface of the support bracket 11 and the headlamp body 12 is designed as a rectangle, forming a rectangular support surface (120*40 mm), which is designed to increase the contact surface with the headlamp body, so that the force is larger and the force distribution is more uniform. The support surface is designed below the headlamp body 12 because the projection of the center of gravity of the headlamp body in the Z direction falls within the range of the support surface (the center point coincides with the Z-direction projection point of the center of gravity of the headlamp, and the eccentricity is ≤5 mm). Such design is to prevent the headlamp from turning and shifting, and the overall support structure is more stable and reliable, ensuring that the gravity transmission has no torsional moment.

[0027] In the scheme, the support bracket 11 is made of PA66+30%GF material and is injection molded, with a thickness of 3mm. The support bracket 11 is designed with a cross-shaped reinforcing rib (radial cross rib) and a circular reinforcing rib (around the mounting hole) structure at multiple positions, which better disperses the gravity of the headlamp and enhances the structural strength of the support bracket. The local bearing strength is improved by 60%, and the gravity dispersion efficiency is improved by 45%. The two parallel support ribs 111 at the bottom have a width of 2mm and a length covering 80% of the width of the mounting plate 31. The support plane is ground and treated, with a flatness tolerance of ≤0.05mm.

[0028] In the bench vibration test (simulating a bumpy road), the deformation of the body mounting point is reduced from 1.2mm in the traditional scheme to 0.3mm (a decrease of 75%). The gap between the support ribs 111 provides temporary support during the pre-installation stage, eliminating the assembly sinking gravity (about 80N) and avoiding lamp body tilting. The gravity projection design makes the eccentric load torque ≤2N•m (≥8N•m in the traditional scheme), completely eliminating the risk of lamp flipping. After strengthening the support, the fatigue life of the vehicle body fender assembly 2 is increased from 100,000 times to 250,000 times (ISO 16750-3 standard).

[0029] As Figure 1 , the headlamp assembly 1 is also connected to other vehicle body components through several mounting points, which are arranged as follows: The main positioning of the headlamp assembly 1 is arranged on the vehicle body fender assembly 2. The mounting foot mounting hole of the headlamp is connected to the mounting hole of the fender assembly 2 by pressing the plastic sub-dog, limiting the X and Y directions of the headlamp assembly 1, and then fixedly connected to the fender assembly 2 in the Z direction by a M6 bolt. The auxiliary positioning of the headlamp assembly 1 is designed on the side plate of the fender assembly 2, which limits the Z and Y directions of the headlamp through a "U" shaped groove, and then fixedly connected to the fender by a M6 bolt. The headlamp assembly 1 is fixedly connected to the vehicle body headlamp cross beam 4 by a M6 bolt. The headlamp assembly 1 is fixedly connected to the plastic anti-sinking bracket 6 of the front bumper by a M6 bolt.

[0030] Since the anti-sinking bracket 6 is a plastic part and is fixed on the front end frame 5, it is a cantilever beam structure, and its bearing capacity is limited. It is easy to be deformed by external force. The fender assembly 2 of the vehicle body is also limited by the cantilever beam structure and the metal material itself, and its bearing capacity of large external force is also limited and easy to be deformed. The support bracket 11 of the headlamp is arranged directly below the headlamp assembly, which supports the sinking force of the headlamp body 12 in the Z direction, and also shares the Z direction stress of the other mounting points of the headlamp. It can effectively prevent the deformation of the front lamp caused by the excessive sinking force of the front lamp fixing point, which leads to the dislocation of the headlamp, affecting the appearance of the whole vehicle and the lighting performance of the lamp.

[0031] The headlamp support structure of the present application has the following characteristics in addition to the beneficial effects mentioned above: 1. To address the issues of deformation of the plastic anti-sinking bracket 6 and insufficient strength of the fender 2, the main load-bearing point is transferred to the steel front guard beam 3, which utilizes its high rigidity (elastic modulus 210GPa) to bear the core load.

[0032] 2. Static fixation is provided by bolt 7; the gap fit of the support rib 111 absorbs the impact vibration of the road surface and reduces the shear force of the bolt.

[0033] 3. The waist-shaped hole 114 allows for ±2° angle adjustment during assembly to avoid positioning interference; the cross-shaped reinforcing ribs form a stress buffer ring around the bolt holes to prevent plastic creep cracking.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A headlamp support structure, characterized in that, a headlamp assembly is composed of a headlamp body (12) and a support bracket (11); the support bracket (11) is located below the headlamp body (12), the first end is positioned by a positioning pin and a positioning hole (113, 114) below the lamp shell, and is fixedly connected with the headlamp body (12) by a screw; the second end of the support bracket (11) is fastened to the front beam mounting plate (31) of the vehicle body by a bolt; the bottom of the support bracket (11) is provided with at least two support ribs (111), the support plane of the support rib (111) is gap-fitted with the top plane of the front beam mounting plate (31) of the vehicle body, and Z-direction support force is provided to bear the gravity of the headlamp body (12).

2. The headlamp support structure according to claim 1, characterized by The gap between the support plane of the support rib (111) and the top plane of the front beam mounting plate (31) of the vehicle body is 0.1mm.

3. The headlamp support structure according to claim 1 or 2, characterized by The second end of the support bracket (11) is provided with a bracket mounting hole one (112), which is hard connected and fixed with the front beam mounting plate (31) of the vehicle body in X direction by a bolt.

4. The headlamp support structure according to claim 1, characterized by The support bracket (11) adopts a cross-shaped and / or circular reinforcing rib structure.

5. The headlamp support structure according to claim 1, characterized by The connecting surface of the support bracket (11) and the headlamp body (12) is a rectangular support surface.

6. The headlamp support structure according to claim 5, characterized by The rectangular support surface is located in the projection range of the center of gravity of the headlamp body (12) in the Z direction.

7. The headlamp support structure of claim 1, wherein The support bracket (11) is provided with a main positioning hole (113) matched with the positioning pin, which is used to realize the precise positioning of the support bracket (11) and the headlamp body (12).

8. The headlamp support structure according to claim 7, characterized by The support bracket (11) is provided with a waist-shaped auxiliary positioning hole (114) matched with the positioning pin, which is used to realize the precise positioning of the support bracket (11) and the headlamp body (12).

9. The headlamp support structure of claim 1, wherein The support bracket (11) is fixed to the Z-direction lower lamp shell of the headlamp body (12) by four mounting holes (115, 116, 117, 118) through screws.

10. The headlamp support structure according to claim 9, characterized by The four mounting holes are bracket mounting hole two (115), bracket mounting hole three (116), bracket mounting hole four (117), and bracket mounting hole five (118), which are arranged at the four corners of the support bracket (11).

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