Optical focusable device of lens car lamp

Abstract

The utility model relates to an optical focusable device of a lens car lamp, which comprises a lamp body support, a lens, a light source module, a spring and an adjusting screw, the light source module consists of a reflection cup, a light source PCB (printed circuit board) and a sliding support, the lens is fixed at the front end of the lamp body support, and the light source module is mounted on the lamp body support according to optical requirements. The adjusting screw penetrates through a screw through hole in the lamp body support to mechanically connect the lamp body support, the spring and the light source module in sequence, the adjusting screw is screwed clockwise and anticlockwise, and the light source module can be driven to do linear reciprocating motion on a track of the lamp body support under the action of the spring force. Therefore, the optical focusable device of the lens car lamp is formed. The device can finely adjust the size of the matching position of the light source module and the lens of the optical system within the range meeting the optical requirement, so that the illumination effect of the automobile lamp reaches the optimal state, the defect that the automobile lamp optical system is influenced by insufficient size precision of production accessories is effectively overcome, and the production benefit of automobile lamp manufacturers is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive lighting, and particularly relates to an optical focusing adjustment device for a lens headlight. Background Art

[0002] In vehicle headlamps, the lens optical system is very popular because it well meets the requirements of road lighting technology. However, due to the high dimensional accuracy requirements for the fit between the light source module assembled with the optical system and the lens, and because each component in production has insufficient machining accuracy or cumulative dimensional tolerances during assembly, the fit dimensional accuracy between them is affected, easily resulting in poor lighting effects of the headlamp and a high rejection rate, which relatively affects the production efficiency of the headlamp manufacturer. In view of this situation, the utility model proposes an optical focusing adjustment device for a lens headlamp. Therefore, in order to avoid the disadvantages existing in the prior art, it is necessary to make improvements to the prior art. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is that, for the lens optical system of the headlamp, the dimensional accuracy requirements for the fit between the light source module and the lens are high, and each component in production has insufficient machining accuracy or cumulative dimensional tolerances during assembly, which affects the fit dimensional accuracy between them, easily resulting in poor lighting effects of the headlamp and a high rejection rate.

[0004] In order to solve the above technical problem, the technical solution of the utility model is as follows:

[0005] An optical focusing adjustment device for a lens headlamp, comprising a lamp body bracket, a lens, a light source module, a spring and an adjustment screw. The lens is installed at the front end of the lamp body bracket. The light source module is slidably connected to the lamp body bracket and can move back and forth. The light source module emits light towards the lens. The adjustment screw is installed at the tail end of the lamp body bracket and is screwed to the light source module. The spring is sleeved outside the adjustment screw, and both ends of the spring respectively abut against the light source module and the lamp body bracket.

[0006] Further, the front end of the lamp body bracket is provided with a structure for fixing the lens. A screw through hole is provided on the side wall at the rear end of the lamp body bracket. A track for the light source module to slide is provided on each of the left and right sides of the lamp body bracket.

[0007] Further, the light source module is composed of a reflector cup, a light source PCB circuit board and a sliding bracket. The reflector cup and the light source PCB circuit board are fixed to the sliding bracket according to optical requirements.

[0008] Further, a screw hole aligned with the screw through hole at the rear end of the lamp body bracket is provided at the rear end of the sliding bracket. Smooth planes adapted to the tracks of the lamp body bracket are provided on both the left and right sides of the sliding bracket, and the sliding bracket is provided with a plurality of heat dissipation fins.

[0009] Further, the lens is fixed at the front end of the lamp body bracket, the light source module is installed on the lamp body bracket according to optical requirements, and the adjusting screw passes through the screw through hole on the lamp body bracket to mechanically connect the lamp body bracket, the spring, and the light source module together in sequence. By screwing the adjusting screw clockwise or counterclockwise, the light source module can be driven to move linearly back and forth on the track of the lamp body bracket under the action of the spring force.

[0010] Adopting the above technical solution, an optical focusing adjustable device for a lens vehicle lamp provided by the present invention has the following beneficial effects: The device can finely adjust the matching position dimension between the light source module and the lens of the optical system within the range meeting optical requirements, enabling the lighting effect of the vehicle lamp to reach the best state, effectively compensating for the defect of the influence of insufficient dimensional accuracy of production parts on the vehicle lamp optical system, and also improving the production efficiency of vehicle lamp manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0012] Figure 1 is a schematic structural diagram of the optical focusing adjustable device for a lens vehicle lamp of the present invention;

[0013] Figure 2 is a longitudinal sectional structural diagram of the optical focusing adjustable device for a lens vehicle lamp of the present invention;

[0014] Figure 3 is a schematic structural diagram of the lamp body bracket of the present invention;

[0015] Figure 4 is a schematic structural diagram of the light source module of the present invention;

[0016] Figure 5 is an exploded structural diagram of the light source module of the present invention;

[0017] Figure 6 is a schematic structural diagram of the sliding bracket of the present invention;

[0018] Figure 7This is a schematic diagram of the focusing mechanical movement of the optical focusing device for the lens headlight of the present utility model.

[0019] The numbers in the figure represent: 1. Lamp body bracket; 2. Lens; 3. Light source module; 4. Spring; 5. Adjusting screw; 11. Track; 12. Screw through-hole; 31. Reflector cup; 32. Light source PCB circuit board; 33. Sliding bracket; 34. Movement direction of the light source module; 331. Smooth plane; 332. Screw hole; 51. Screwing direction of the adjusting screw. Detailed implementation manners

[0020] The following further describes the detailed implementation manners of the present utility model with reference to the accompanying drawings. It should be noted here that the description of these implementation manners is used to help understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various implementation manners of the present utility model described below can be combined with each other as long as they do not interfere or conflict with each other. Additionally, the orientation or positional relationship indicated in the description of the present utility model is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0021] As Figure 1 shown, as a schematic structural diagram of the optical focusing device for the lens headlight of the present utility model, it is used to illustrate the positional relationship of the main components in the optical system of the lens headlight.

[0022] As Figure 2 shown, as a schematic longitudinal sectional structural diagram of the optical focusing device for the lens headlight of the present utility model, it is used to illustrate the internal mechanical connection relationship of the main components in the optical system of the lens headlight.

[0023] As Figure 1 and Figure 2 shown, in an exemplary implementation manner, an optical focusing device for a lens headlight includes a lamp body bracket 1, a lens 2, a light source module 3, a spring 4 and an adjusting screw 5. The lens 2 is installed at the front end of the lamp body bracket 1. The light source module 3 is slidably connected to the lamp body bracket 1 so as to move back and forth. The light source module 3 emits light towards the lens 2. The adjusting screw 5 is installed at the rear end of the lamp body bracket 1. The adjusting screw 5 is screwed to the light source module 3. The spring 4 is sleeved outside the adjusting screw 5. The two ends of the spring 4 respectively abut against the light source module 3 and the lamp body bracket 1.

[0024] As Figure 3 shown, in an exemplary implementation manner, the front end of the lamp body bracket 1 is provided with a structure for fixing the lens 2. A screw through-hole 12 is provided on the rear side wall of the lamp body bracket 1. One track 11 for the light source module 3 to slide is provided on each of the left and right sides of the lamp body bracket 1.

[0025] As Figure 4 and Figure 5 shown, in an exemplary embodiment, the light source module 3 is composed of a reflector cup 31, a light source PCB circuit board 32 and a sliding bracket 33. The rear end of the reflector cup 31 is open, and the reflector cup 31 and the light source PCB circuit board 32 are fixed on the sliding bracket 33 according to optical requirements.

[0026] As Figure 6 shown, in an exemplary embodiment, a screw hole 332 aligned with the screw through hole 12 at the rear end of the lamp body bracket 1 is provided at the rear end of the sliding bracket 33. Smooth planes 331 adapted to the track 11 surfaces of the lamp body bracket 1 are provided on both the left and right sides of the sliding bracket 33. The sliding bracket 33 is also provided with a number of heat dissipation fins and thus has a heat dissipation function.

[0027] As Figure 7 shown, in an exemplary embodiment, the lens 2 is fixed to the front end of the lamp body 1 bracket, and the light source module 3 is installed on the lamp body bracket 1 according to optical requirements. The adjusting screw 5 passes through the screw through hole 12 on the lamp body bracket 1 to mechanically connect the lamp body bracket 1, the spring 4 and the light source module 3 in sequence. By screwing the adjusting screw 5 clockwise or counterclockwise and under the action of the force of the spring 4, the light source module 3 can be driven to move in a straight line back and forth on the track 11 of the lamp body bracket 1, constituting an optically adjustable focusing device for the lens headlamp; thereby realizing that the matching position dimension between the light source module 3 and the lens 2 of the optical system can be finely adjusted within the range meeting the optical requirements, so that the lighting effect of the headlamp reaches the best state, effectively compensating for the defect of the influence of the insufficient dimensional accuracy of the production accessories on the vehicle lamp optical system.

[0028] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. An optical focus-adjustable device for a lens headlight, characterized in that: The utility model comprises a lamp body bracket, a lens, a light source module, a spring and an adjusting screw, wherein the lens is installed at the front end of the lamp body bracket, the light source module is slidably connected to the lamp body bracket and can move forward and backward, the light source module emits light to the lens, the adjusting screw is installed at the rear end of the lamp body bracket, the adjusting screw is threadedly connected to the light source module, the spring is sleeved on the outside of the adjusting screw, and the two ends of the spring respectively resist the light source module and the lamp body bracket.

2. The optical focus adjustable device of the lens headlight according to claim 1, characterized in that: The front end of the lamp body bracket is provided with a structure for fixing the lens, the rear end side wall of the lamp body bracket is provided with a screw through hole, and the left and right sides of the lamp body bracket are respectively provided with a track for the light source module to slide.

3. The optical focus adjustable device of the lens headlight according to claim 2, characterized in that: The light source module is composed of a reflective cup, a light source PCB circuit board and a sliding bracket. The reflective cup and the light source PCB circuit board are fixed on the sliding bracket according to optical requirements.

4. The optical focus adjustable device of the lens headlight according to claim 3, characterized in that: The rear end of the sliding bracket is provided with a screw hole aligned with the screw through hole at the rear end of the lamp body bracket, the left and right sides of the sliding bracket are both provided with smooth planes adapted to the track of the lamp body bracket, and the sliding bracket is provided with a plurality of heat dissipation fins.

5. The optical focus adjustable device of the lens headlight according to claim 4, characterized in that: The lens is fixed at the front end of the lamp body bracket, the light source module is installed on the lamp body bracket according to optical requirements, the adjusting screw passes through the screw hole on the lamp body bracket to mechanically connect the lamp body bracket, the spring and the light source module in sequence, and the adjusting screw is turned clockwise or counterclockwise and the light source module can be driven to move in a straight line reciprocating direction on the track of the lamp body bracket under the action of the spring force.

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