An optical system subassembly for automotive lighting

Abstract

The present invention is an optical system subassembly for automotive lighting, including a sunshade and a baffle horizontally arranged above the sunshade, the baffle being connected to the baffle through a snap-fit ​​structure, the snap-fit ​​structure including a plurality of slots and plugs arranged on the baffle, the sunshade being provided with a stamping bridge, the stamping bridge cooperating with the plug for position limiting, the sunshade being provided with a plurality of air windows, the air windows cooperating with the slots for snap-fitting. This patent adopts snap-fitting fixing, which is conducive to quick assembly. The size can be adjusted according to actual product requirements. For example, when designing a wide-body lens module, the wall thickness of the baffle can be increased; when designing a dual-light module, a thin-walled baffle can be considered; the material can be changed according to the position of the slot in the snap-fit ​​structure in the baffle, and the elastic deformation of the slot during the snap-fitting process. For the requirements of material reflectivity in optical design, surface treatment can be performed before assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile lighting, and relates to an optical system subassembly for automobile lighting. Background Art

[0002] The low beam function in the vehicle headlamp lighting system is mainly used in towns and cities to avoid the undesirable phenomenon of visual dazzle for drivers during the process of meeting. In modern low beam lighting systems, the "Z"-shaped cutoff line shape is the key part to form the low beam lighting effect. In order to fix the shape inside the system and form a certain angle relationship with the light source to achieve the purpose of low beam, the most commonly used installation methods are bracket assembly and plastic integrated type. However, these two methods have design deficiencies. For the bracket assembly type, the cutoff line shape can be formed into a metal cutoff line baffle through sheet metal stamping process, and then the metal cutoff line baffle is fixed to the bracket by fastening, hot riveting and other methods. In addition, the bracket carries the sunshade, and finally the bracket assembly is locked on the lens bracket with screws. Although the bracket assembly type can simultaneously meet the functions of cutoff line imaging and resisting the sunlight focusing ablation of the lens bracket, the assembly involves cumbersome procedures and processes, which affects the production efficiency. For the plastic integrated type, although injection molding reduces the assembly link, the plastic material has the safety hazard of internal sunlight focusing ablation, so it puts forward higher requirements for structural rationality. Compared with these two methods, this invention can not only meet the basic low-beam lighting function of the cut-off line, but also fully simplifies the assembly process, without considering the hidden danger of sunlight focusing ablation of the lens bracket. Summary of the invention

[0003] In order to solve the problem of complicated assembly, the present invention provides an optical system subassembly for automotive lighting, including a sunshade and a baffle horizontally arranged above the sunshade, the baffle being connected to the baffle through a snap-fit ​​structure, the snap-fit ​​structure including a plurality of slots and plugs arranged on the baffle, the sunshade being provided with a stamping bridge, the stamping bridge cooperating with the plug for limiting, the sunshade being provided with a plurality of air windows, the air windows cooperating with the slots for snap-fitting.

[0004] Preferably, the two side edges of the sunshade are bent inward to extend to form a mounting surface, and the remaining part forms a limiting surface, the limiting surface is located at one end of the mounting surface, and a notch is formed at the connection between the limiting surface and the mounting surface, and the baffle is provided with a covering surface and a plug-in surface respectively matching the mounting surface and the limiting surface, the covering surface covers the outside of the mounting surface, and the plug-in surface is inserted into the notch and abuts against the inner side of the limiting surface. The limiting surface limits the axial dimension of the baffle and the sunshade to prevent the card from not being in place or being misplaced, and at the same time, the use of this structure has strong stability and compact structure.

[0005] Furthermore, the shade is also provided with a positioning plug, and the positioning plug is engaged with the through hole on the lamp housing. The positioning plug plays a positioning role, ensuring that the shade and the lamp housing are installed in place.

[0006] Preferably, a fixing plate is extended downwardly from one side of the shade, and a screw hole is provided on the fixing plate. The fixing plate is fixed to the lamp housing by screws, thereby fixing the shade.

[0007] Furthermore, the interior of the shutter is U-shaped, and the exterior shape of the shutter matches the shape of the lamp housing. The U-shaped shutter prevents light from being focused and ablated while maintaining a maximum luminous flux.

[0008] Preferably, in order to enhance the ability of the sunshade to resist bending deformation, a raised strip is provided on the peripheral wall of the sunshade.

[0009] Furthermore, the shade and the baffle are made of metal, and the surfaces of the shade and the baffle are mirror-polished or aluminum-plated. The metal material can be austenitic stainless steel, ferritic stainless steel, duplex steel, phase change induced plastic steel, twinning induced plastic steel, precipitation hardening martensitic stainless steel, and the use of metal material facilitates light reflection and avoids light focusing ablation.

[0010] Preferably, in order to assist in forming the low beam effect, a crescent-shaped notch is provided at one end of the baffle.

[0011] Beneficial effects: This patent adopts a snap-on method for fixing, which is conducive to quick assembly. The size can be adjusted according to actual product requirements. For example, when designing a wide-body lens module, the baffle wall thickness can be increased; when designing a dual-light module, a thin-walled baffle can be considered; the material can be changed according to the position of the card slot in the baffle in the snap-on structure and the elastic deformation of the card slot during the snap-on process. For the requirements of material reflectivity in optical design, surface treatment can be performed before assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an assembly diagram of the baffle and the shade of the present invention;

[0013] Figure 2 It is a schematic diagram of the baffle of the present invention;

[0014] Figure 3 is a schematic diagram of the sunshade of the present invention;

[0015] Figure 4 It is a schematic diagram of assembling the present invention and the lamp housing;

[0016] 1. baffle; 2. sunshade; 3. positioning plug; 4. notch; 5. fixing plate; 6. screw hole; 7. air window; 8. slot; 9. stamping bridge; 10. plug; 11. raised strip; 12. mounting surface; 13. limiting surface; 14. crescent-shaped notch; 15. plug-in surface; 16. covering surface; DETAILED DESCRIPTION

[0017] like Figure 1 As shown, an optical system subassembly for automobile lighting includes a shade 2 and a baffle 1 horizontally arranged above the shade 2, and the baffle 1 is connected to the baffle 1 through a clamping structure. Figure 2 and 3 As shown, the snap-fit ​​structure includes a plurality of snap-fit ​​grooves 8 and a plug 10 provided on the baffle 1, a punch bridge 9 is provided on the shade 2, and the punch bridge 9 cooperates with the plug 10 to limit the position, and a plurality of air windows 7 are provided on the shade 2, and the air windows 7 cooperate with the snap-fit ​​grooves 8. The baffle 1 is snap-fitted with the shade 2 for easy disassembly and assembly.

[0018] like Figure 3 As shown, the two side edges of the shutter 2 are bent inward and extended to form a mounting surface 12, and the remaining part forms a limiting surface 13. The limiting surface 13 is located at one end of the mounting surface 12, and a notch 4 is formed at the connection between the limiting surface 13 and the mounting surface 12. The baffle 1 is provided with a covering surface 16 and a plug-in surface 15 respectively matching the mounting surface 12 and the limiting surface 13. The covering surface 16 covers the outside of the mounting surface 12, and the plug-in surface 15 is inserted into the notch 4 and abuts against the inner side of the limiting surface 13. This structure makes the structure more compact and stable, and the baffle 1 will not easily fall out. The limiting surface 13 limits the axial dimension of the baffle 1 and the shutter 2 to prevent the notch from being in place or misaligned. The shutter 2 is also provided with a positioning plug 3, and the positioning plug 3 is engaged with the through hole on the lamp housing. The positioning plug 3 plays a positioning role to ensure that the shutter 2 is installed in place. As shown Figure 4 As shown, a fixing plate 5 extends downward from one side of the shade 2, and a screw hole 6 is provided on the fixing plate 5. The fixing plate 5 is fixed to the lamp housing by screws, thereby fixing the shade 2. The interior of the shade 2 is U-shaped, and the outer shape of the shade 2 matches the shape of the lamp housing. The U-shaped shade 2 prevents light from focusing while maintaining the maximum luminous flux.

[0019] like Figure 3As shown, in order to enhance the ability of the sunshade to resist bending and deformation, a raised strip 11 is provided on the peripheral wall of the sunshade 2. In order to assist in forming the effect of low beam illumination, a crescent-shaped notch 14 is provided at one end of the baffle 1. The sunshade 2 and the baffle 1 are made of metal, and the surfaces of the sunshade 2 and the baffle 1 are mirror-polished or aluminum-plated. The metal material can be austenitic stainless steel, ferritic stainless steel, duplex steel, phase-change induced plastic steel, twin-induced plastic steel, precipitation-hardened martensitic stainless steel. The use of metal material facilitates light reflection and avoids light focusing and ablation.

Claims

1. An optical system subassembly for automotive lighting, characterized in that: Including sunshade The light shield (2) comprises a baffle (1) and a baffle (1) horizontally arranged above the light shield (2), the baffle (1) being connected to the light shield (2) via a snap-fit ​​structure, the snap-fit ​​structure comprising a plurality of snap-fit ​​grooves (8) and a plug (10) arranged on the baffle (1), the light shield (2) being provided with a punching bridge (9), the punching bridge (9) and the plug (10) being cooperated to limit the position, the light shield (2) being provided with a plurality of air windows (7), the air windows (7) being cooperated to snap-fit ​​with the slots (8); The two side edges of the sunshade (2) are bent inwardly and extended to form a mounting surface, and the remaining portion forms a limiting surface (13). The limiting surface (13) is located at one end of the mounting surface, and a notch (4) is formed at the connection between the limiting surface (13) and the mounting surface. The baffle (1) is provided with a covering surface (16) and a plug-in surface (15) respectively matching the mounting surface and the limiting surface (13). The covering surface (16) covers the outside of the mounting surface, and the plug-in surface (15) is inserted into the notch (4) and abuts against the inner side of the limiting surface (13). The shade (2) is also provided with a positioning plug (3), and the positioning plug (3) is engaged with a through hole on the lamp housing; A fixing plate (5) extends downwardly from one side of the shade (2), and a screw hole (6) is provided on the fixing plate (5); The interior of the shade (2) is U-shaped, and the exterior shape of the shade (2) matches the shape of the lamp housing; The shading device (2) has a convex strip (11) on its peripheral wall; The shade (2) and the baffle (1) are made of metal, and the surfaces of the shade (2) and the baffle (1) are mirror-polished or aluminum-plated; A crescent-shaped notch (14) is provided at one end of the baffle (1).

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