CN111964002A - Optical system sub-assembly for automobile illumination - Google Patents

Abstract

The present invention relates to an optical system sub-assembly for automotive lighting, comprising a shutter and a baffle horizontally arranged above the shutter, the baffle is connected with the baffle through a snap connection structure, and the snap The connection structure includes a plurality of card slots and plugs arranged on the baffle plate, a punching bridge is arranged on the shutter, the punching bridge cooperates with the plug to limit the position, and a plurality of air windows are arranged on the shutter, The air window is engaged with the card slot. The patent is fixed by means of snap connection, which is conducive to quick assembly. The size can be adjusted according to the 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-optical module, a thin-walled baffle can be considered; The position in the baffle plate and the elastic deformation of the slot during the clamping process, the material can be changed. For material reflectivity requirements in optical design, surface treatment can be performed prior to assembly.

Description

An optical system sub-assembly for automotive lighting

technical field

The invention belongs to the technical field of automotive lighting, and relates to an optical system sub-assembly used for automotive lighting.

Background technique

The low-beam function in the vehicle headlamp lighting system is mainly used in townships and urban roads to avoid the bad phenomenon of driver's vision dazzling during the process of passing vehicles. In the modern low beam lighting system, the "Z"-shaped cut-off line is the key part to form the low beam lighting effect. In order to fix the shape inside the system and form a certain angular relationship with the light source, so as to achieve the purpose of low beam, the most commonly used installation methods are bracket assembly and plastic integrated. However, these two methods have design deficiency. For the bracket assembly type, the cut-off line shape can be formed by a sheet metal stamping process to form a metal cut-off line baffle, and then the metal cut-off line baffle is fixed on the bracket by means of fastening, hot riveting, etc. In addition, the bracket carries a light hood , and finally lock the bracket assembly on the lens bracket with screws. Although the bracket assembly type can meet the functions of cut-off line imaging and resist sunlight focusing and ablation of the lens bracket at the same time, the assembly involves tedious procedures and processes, which affects the production efficiency. For the plastic integrated type, although injection molding reduces the assembly process, the plastic material has the hidden safety hazard of internal sunlight focused ablation, so higher requirements are placed on the rationality of the structure. Compared with the two methods, the present invention can not only satisfy the basic low-beam lighting function of the cut-off line, but also fully simplifies the assembly process, and does not need to consider the hidden danger of sunlight focusing and ablation of the lens holder.

SUMMARY OF THE INVENTION

In order to solve the problem of complicated assembly, the present invention provides an optical system sub-assembly for automotive lighting, which includes a shutter and a baffle horizontally arranged above the shutter. The baffle is connected, the clamping structure includes a plurality of card slots and plugs arranged on the baffle, and a punching bridge is provided on the shutter, and the punching bridge cooperates with the plug to limit the position, so The shutter is provided with a plurality of air windows, and the air windows are engaged with the clamping grooves.

Preferably, the side portions of the two sides of the shutter are bent inwardly to form a mounting surface, and the rest of the shutters form a limiting surface. The limiting surface is located at one end of the mounting surface, and the limiting surface is connected to the mounting surface. A gap is formed at the connection, and the baffle plate is provided with a covering surface and a plug-in surface respectively matched with the installation surface and the limit surface, the covering surface covers the outside of the installation surface, and the plug-in surface is The surface is inserted into the notch and abuts the inner side of the limiting surface. The limiting surface limits the axial dimension of the baffle and the shutter to prevent the clamping from being in place or the clamping dislocation. At the same time, the use of this structure has strong stability and compact structure.

Further, a positioning plug is also provided on the shutter, and the positioning plug is engaged with the through hole on the lamp housing. The positioning plug plays a positioning role and ensures that the shutter and the lamp housing are installed in place.

Preferably, a fixing plate extends downward from one side of the shutter, and the fixing plate is provided with screw holes. The fixing plate fixes the fixing plate on the lamp housing through screws, thereby fixing the shutter.

Further, the interior of the shade is U-shaped, and the outer shape of the shade matches the shape of the lamp housing. The U-shaped shutter prevents focused light ablation while maintaining maximum light flux.

Preferably, in order to improve the ability of the light shield to resist bending deformation, a raised strip is provided on the peripheral wall of the light shield.

Further, the shutter and the baffle are made of metal, and the surfaces of the shutter and the baffle are mirror polished or aluminized. The metal material can be austenitic stainless steel, ferritic stainless steel, dual-phase steel, phase-transformation-induced plasticity steel, twin-crystal-induced plasticity steel, and precipitation hardening martensitic stainless steel. The metal material is used to facilitate light reflection and avoid light focusing. ablation.

Preferably, in order to assist in forming the effect of low light, one end of the baffle is provided with a crescent-shaped notch.

Beneficial effects: The patent adopts the clamping method to fix, which is beneficial to quick assembly. The size can be adjusted according to the 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-optical module, a thin-walled baffle can be considered; The position in the baffle plate, and the elastic deformation of the slot during the clamping process, the material can be changed. For material reflectivity requirements in optical design, surface treatment can be performed prior to assembly.

Description of drawings

Fig. 1 is the baffle plate and the shutter assembly drawing of the present invention;

Fig. 2 is the schematic diagram of baffle plate of the present invention;

Fig. 3 is the schematic diagram of the shutter of the present invention;

Figure 4 is a schematic diagram of the present invention and lamp housing assembly;

1. Baffle; 2. Shutter; 3. Positioning plug; 4. Gap; 5. Fixed plate; 6. Screw hole; 7. Transom; 8. Card slot; 9. Stamping bridge; 10. Plug; 11. Convex strip; 12, installation surface; 13, limit surface; 14, crescent-shaped notch; 15, plug surface; 16, covering surface;

Detailed ways

As shown in FIG. 1, an optical system sub-assembly for automotive lighting includes a shutter 2 and a baffle 1 horizontally arranged above the shutter 2. The baffle 1 is connected to the Baffle 1 is connected. As shown in FIGS. 2 and 3 , the clamping structure includes a plurality of clamping slots 8 and plugs 10 arranged on the baffle 1 , and a punching bridge 9 is provided on the shutter 2 , and the punching bridge 9 is connected to the The plug 10 cooperates to limit the position. The shutter 2 is provided with a plurality of air windows 7 , and the air windows 7 are engaged with the card slot 8 . The baffle 1 is clamped with the shutter 2, which is convenient for disassembly and assembly.

As shown in FIG. 3 , the two sides of the shutter 2 are bent and extended inward to form a mounting surface 12 , and the remaining parts form a limiting surface 13 , and the limiting surface 13 is located at one end of the mounting surface 12 . A gap 4 is formed at the connection between the limiting surface 13 and the mounting surface 12 , and the baffle 1 is provided with a covering surface 16 and an inserting surface 15 which are respectively matched with the mounting surface 12 and the limiting surface 13 . The covering surface 16 covers the outside of the mounting surface 12 , and the insertion surface 15 is inserted into the notch 4 and abuts against the inner side of the limiting surface 13 . By adopting this structure, the structure is more compact and the stability is strong, and the baffle 1 will not be easily detached. The limiting surface 13 limits the axial dimension of the baffle 1 and the shutter 2 being snapped together, so as to prevent the snap fit from being in place or the snap fit from being 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 and ensures that the shutter 2 is installed in place. As shown in FIG. 4 , a fixing plate 5 extends downward from one side of the shutter 2 , and the fixing plate 5 is provided with screw holes 6 . The fixing plate 5 is used to fix the fixing plate 5 on the lamp housing through screws, thereby fixing the shutter 2 . The interior of the shutter 2 is U-shaped, and the external shape of the shutter 2 matches the shape of the lamp housing. The U-shaped shutter 2 prevents light from focusing while maintaining maximum light flux.

As shown in FIG. 3 , in order to improve the ability of the light shield to resist bending deformation, a raised strip 11 is provided on the peripheral wall of the light shield 2 . In order to assist in forming the effect of low light, one end of the baffle 1 is provided with a crescent-shaped notch 14 . The shutter 2 and the baffle 1 are made of metal, and the surfaces of the shutter 2 and the baffle 1 are mirror polished or aluminized. The metal material can be austenitic stainless steel, ferritic stainless steel, dual-phase steel, phase-transformation-induced plasticity steel, twin-crystal-induced plasticity steel, and precipitation hardening martensitic stainless steel. The metal material is used to facilitate light reflection and avoid light focusing. ablation.

Claims (8)

1. An optical system subassembly for automotive lighting, comprising: set up including photochopper (2) and level baffle (1) of photochopper (2) top, baffle (1) through the joint structure with baffle (1) is connected, the joint structure is including setting up a plurality of draw-in grooves (8) and plug (10) on baffle (1), be equipped with punching bridge (9) on photochopper (2), punching bridge (9) with plug (10) cooperation is carried on spacingly, be equipped with a plurality of transoms (7) on photochopper (2), transom (7) with draw-in groove (8) cooperation joint.

2. An optical system subassembly for automotive lighting, as claimed in claim 1, wherein: the light chopper is characterized in that the two side portions of the light chopper (2) are bent inwards to extend to form an installation surface (12), the rest portions form a limiting surface (13), the limiting surface (13) is located at one end of the installation surface (12), a gap (4) is formed at the joint of the limiting surface (13) and the installation surface (12), a cladding surface (16) and an inserting surface (15) which are matched with the installation surface (12) and the limiting surface (13) respectively are arranged on the baffle (1), the cladding surface (16) is wrapped outside the installation surface (12), and the inserting surface (15) is inserted into the gap (4) and abuts against the inner side of the limiting surface (13).

3. An optical system subassembly for automotive lighting, as claimed in claim 1, wherein: still be equipped with location plug (3) on photochopper (2), location plug (3) and the through-hole cooperation joint on the lamp body.

4. An optical system subassembly for automotive lighting, as claimed in claim 1, wherein: one side downwardly extending of shutter (2) has fixed plate (5), be equipped with screw hole (6) on fixed plate (5).

5. An optical system subassembly for automotive lighting, as claimed in claim 1, wherein: the interior of the light chopper (2) is U-shaped, and the external shape of the light chopper (2) is matched with the shape of the lamp shell.

6. An optical system subassembly for automotive lighting, as claimed in claim 1, wherein: the peripheral wall of the light chopper (2) is provided with a protruding strip (11).

7. An optical system subassembly for automotive lighting, as claimed in claim 1, wherein: the light chopper (2) and the baffle (1) are made of metal materials, and the surfaces of the light chopper (2) and the baffle (1) are subjected to mirror polishing or aluminizing treatment.

8. An optical system subassembly for automotive lighting, as claimed in claim 1, wherein: one end of the baffle (1) is provided with a crescent notch (14).

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