Light guide fixing structure capable of saving space

Abstract

The utility model belongs to the technical field of vehicle lamp light guide fixing, and particularly relates to a space-saving light guide fixing structure which comprises a light guide, a support and a PCB. A limiting rib and a positioning rib are arranged at one end of the light guide in the radial direction, the limiting rib is closer to the end face of one end of the light guide than the positioning rib, and the limiting rib penetrates through the support to abut against the PCB. The side, close to the PCB, of the support is provided with a buckle, and the upper end face of the limiting rib abuts against the lower end face of the buckle so as to achieve the fixing effect in the X negative direction. According to the utility model, the positioning ribs and the positioning grooves play a guiding and positioning role in the X-direction assembling process, meanwhile, the freedom degrees of the light guide in the X-direction, the Y-direction and the Z-direction are limited, and then the freedom degree of the light guide in the X-direction is limited through the clamping matching of the limiting ribs and the buckles, so that the light guide can be assembled in the X-direction and the Y-direction. The fixed area of the light guide is reduced, and space occupation is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of light guide fixing of vehicle lamps, and in particular relates to a light guide fixing structure that saves space. Background Art

[0002] With the rapid development of science and technology, the technology of automobile lights is also constantly improving. In today's society where automobile designs are becoming more and more beautiful and sharp, in order to pursue a more beautiful visual experience, the functions and shapes of car lights are becoming more and more diverse and complicated. However, many novel lamp shapes are often limited by technology and space, and cannot fully achieve the expected effect. In order to meet manufacturing feasibility, the shape and size of the car lights must be modified, resulting in many novel shapes that cannot be launched, which is a pity.

[0003] In order to ensure the fixing strength of the light guide, the existing light guide fixing solution usually needs to reserve an area of ​​more than 20mm around the light guide as a fixing surface, which takes up a lot of internal space of the lamp and limits the design space of compact lamps. For example, in the Y-type position lamp, the gap between the two light-emitting areas is too large, affecting the overall visual effect. Utility Model Content

[0004] In view of this, in order to solve the problems existing in the prior art, an object of the present invention is to provide a space-saving light guide fixing structure, which has a more compact and space-saving light guide fixing effect.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A space-saving light guide fixing structure, comprising: a light guide, a bracket and a PCB board;

[0007] A limiting rib and a positioning rib are radially arranged at one end of the light guide, the limiting rib is closer to the end surface of the one end of the light guide than the positioning rib, and the limiting rib passes through the bracket and abuts against the PCB board;

[0008] A buckle is provided on one side of the bracket close to the PCB board, and the upper end surface of the limiting rib abuts against the lower end surface of the buckle to form a fixing effect in the negative X direction;

[0009] The bracket is provided with a positioning groove, and the positioning rib is inserted into the positioning groove to form a fixing function in the X-direction, the Y-direction and the Z-direction.

[0010] The specific technical effect is: the positioning ribs and positioning grooves play a guiding and positioning role in the X-direction assembly process, while limiting the freedom of the light guide in the positive, Y and Z directions, and then limiting the freedom of the light guide in the negative direction of X through the limit ribs and buckles. The limit structure used to fix the light guide is controlled within the diameter range of the light guide, ensuring that the light guide is positioned and fixed without occupying the space of the lamp.

[0011] Furthermore, it also includes: a shell, the PCB board is arranged on the shell, and the bracket is also installed on the shell.

[0012] Furthermore, the PCB board and the bracket are connected to the housing via screws.

[0013] The specific technical effect is to ensure that the light guide, the bracket and the PCB board can be positioned and assembled on the housing.

[0014] Furthermore, the number of the limiting ribs is two, and the two limiting ribs are arranged on both sides of the light guide along the Z direction.

[0015] Furthermore, a locking plane is formed at the connection between each of the limiting ribs and the light guide, and the lower end surface of the buckle is against the locking plane.

[0016] The specific technical effect is: after the limiting rib passes through the bracket and the buckle in sequence, the abutment plane abuts against the lower end surface of the buckle, and the freedom of the light guide X in the negative direction is limited through the clamping cooperation between the limiting rib and the buckle.

[0017] Furthermore, the number of the positioning ribs is two, and the two positioning ribs are in a wing-shaped structure and are arranged on both sides of the light guide.

[0018] Furthermore, the two positioning ribs are arranged on both sides of the light guide along the Z direction, the positioning groove is also opened along the Z direction, and the two positioning ribs are inserted into the positioning groove.

[0019] The specific technical effect is that the positioning rib inserted into the positioning groove can limit the freedom of the light guide in the X-direction, Y-direction and Z-direction.

[0020] Furthermore, the lower end of the buckle has a slope for facilitating introduction into the limiting rib.

[0021] The specific technical effect is: the slope design can play a guiding role, making it easier for the limiting rib to be inserted under the buckle.

[0022] The beneficial effects of the utility model are:

[0023] (1) The positioning ribs and positioning grooves play a guiding and positioning role in the X-direction assembly process, while limiting the freedom of the light guide in the positive, Y and Z directions. The limiting ribs and the buckle are then used to limit the freedom of the light guide in the negative direction of X. While taking into account the reliability and service life of the light guide and ensuring that the optical performance is not affected, the fixing area of ​​the light guide is reduced and the space occupancy is reduced.

[0024] (2) By optimizing the internal structure of the lamp, more space can be freed up for innovative design, providing a feasible solution for some compact combination lamps and creating more possibilities for lamp design.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 yes Figure 1 The main view;

[0029] Figure 3 yes Figure 1 Right view of;

[0030] Figure 4 yes Figure 2 Sectional view at AA in the middle;

[0031] Figure 5 yes Figure 2 Cross-sectional view at the middle BB.

[0032] In the figure:

[0033] 1. Bracket; 2. Light guide; 3. PCB board; 4. Shell; 11. Buckle; 12. Positioning groove; 13. Slope; 21. Limiting rib; 22. Positioning rib; 23. Abutment plane. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are

[0035] like Figures 1 to 5 As shown, a space-saving light guide 2 fixing structure includes: a light guide 2, a bracket 1 and a PCB board 3;

[0036] A limiting rib 21 and a positioning rib 22 are radially arranged at one end of the light guide 2. The limiting rib 21 is closer to the end surface of one end of the light guide 2 than the positioning rib 22. The limiting rib 21 passes through the bracket 1 and abuts against the PCB board 3.

[0037] A buckle 11 is provided on one side of the bracket 1 close to the PCB board 3, and the upper end surface of the limiting rib 21 abuts against the lower end surface of the buckle 11 to form a fixing effect in the negative X direction;

[0038] The bracket 1 is provided with a positioning groove 12, and the positioning rib 22 is inserted into the positioning groove 12 to form a fixing function in the X-direction, the Y-direction and the Z-direction.

[0039] It should be noted that the positioning ribs 22 and the positioning grooves 12 play a guiding and positioning role in the X-direction assembly process, and at the same time limit the freedom of the light guide 2X in the positive, Y and Z directions, and then limit the freedom of the light guide 2X in the negative direction through the clamping fit of the limiting ribs 21 and the buckle 11. The limiting structure used to fix the light guide 2 is controlled within the diameter range of the light guide 2, ensuring that the light guide 2 is positioned and fixed without occupying the space of the lamp.

[0040] See also Figure 2 As shown, when the light guide 2 and the bracket 1 are fixed, a space of about 2 mm is formed between the light guide 2 and the bracket 1 in the Y direction, which provides a feasible solution for some compactly arranged combination lamp shapes and creates more possibilities for lamp shape design.

[0041] The lower end surface of the limiting rib 21 is closer to the PCB board 3 than the lower end surface of the light guide 2 . The limiting rib 21 and the PCB board 3 are limited and matched to ensure the gap between the light guide 2 and the PCB board 3 .

[0042] It also includes: a shell 4 , a PCB board 3 is arranged on the shell 4 , and a bracket 1 is also installed on the shell 4 .

[0043] The PCB board 3 and the bracket 1 are connected to the housing 4 via screws.

[0044] It should be noted here that: to ensure that the light guide 2 , the bracket 1 and the PCB board 3 can be positioned and assembled on the housing 4 .

[0045] The number of the limiting ribs 21 is two, and the two limiting ribs 21 are arranged on both sides of the light guide 2 along the Z direction.

[0046] A locking plane 23 is formed at the connection between each limiting rib 21 and the light guide 2 , and the lower end surface of the buckle 11 is against the locking plane 23 .

[0047] It should be noted here that after the limiting rib 21 passes through the bracket 1 and the buckle 11 in sequence, the abutting plane 23 abuts against the lower end surface of the buckle 11, and the limiting rib 21 and the buckle 11 are engaged with each other to limit the freedom of the light guide 2X in the negative direction.

[0048] There are two positioning ribs 22 , and the two positioning ribs 22 are wing-shaped and arranged on two sides of the light guide 2 .

[0049] Two positioning ribs 22 are arranged on both sides of the light guide 2 along the Z direction. The positioning groove 12 is also opened along the Z direction. The two positioning ribs 22 are inserted into the positioning groove 12 .

[0050] It should be noted here that the positioning rib 22 inserted into the positioning groove 12 can limit the freedom of the light guide 2 in the X-direction, Y-direction and Z-direction.

[0051] The lower end of the buckle 11 has a slope 13 for facilitating the introduction of the limiting rib 21 .

[0052] It should be noted here that the design of the slope 13 can play a guiding role, making it easier for the limiting rib 21 to be inserted under the buckle 11 .

[0053] In summary, the beneficial effects of the utility model are:

[0054] (1) The positioning ribs 22 and the positioning grooves 12 play a guiding and positioning role during the X-direction assembly process, while limiting the freedom of the light guide 2X in the positive, Y and Z directions. The limiting ribs 21 and the buckles 11 are engaged with each other to limit the freedom of the light guide 2X in the negative direction. While taking into account the reliability and service life of the light guide 2 and ensuring that the optical performance is not affected, the fixing area of ​​the light guide 2 is reduced and the space occupied is reduced.

[0055] (2) By optimizing the internal structure of the lamp, more space can be freed up for innovative design, providing a feasible solution for some compact combination lamps and creating more possibilities for lamp design.

[0056] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0057] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0059] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A space-saving light guide fixing structure, characterized in that: include: Light guide (2), bracket (1) and PCB board (3); One end of the light guide (2) is provided with a limiting rib (21) and a positioning rib (22) in the radial direction, the limiting rib (21) is closer to the end surface of one end of the light guide (2) than the positioning rib (22), and the limiting rib (21) passes through the bracket (1) and abuts against the PCB board (3); A buckle (11) is provided on one side of the bracket (1) close to the PCB board (3), and the upper end surface of the limiting rib (21) abuts against the lower end surface of the buckle (11) to form a fixing effect in the negative X direction; The bracket (1) is provided with a positioning groove (12), and the positioning rib (22) is inserted into the positioning groove (12) to form a fixing function in the X-direction, Y-direction and Z-direction.

2. A space-saving light guide fixing structure as claimed in claim 1, characterized in that: Also includes: A housing (4), the PCB board (3) is arranged on the housing (4), and the bracket (1) is also installed on the housing (4).

3. A space-saving light guide fixing structure as claimed in claim 2, characterized in that: The PCB board (3) and the bracket (1) are both connected to the housing (4) via screws.

4. A space-saving light guide fixing structure as claimed in claim 1, characterized in that: The number of the limiting ribs (21) is two, and the two limiting ribs (21) are arranged on both sides of the light guide (2) along the Z direction.

5. A space-saving light guide fixing structure as claimed in claim 4, characterized in that: A locking plane (23) is formed at the connection between each of the limiting ribs (21) and the light guide (2), and the lower end surface of the buckle (11) is against the locking plane (23).

6. A space-saving light guide fixing structure as claimed in claim 1, characterized in that: The number of the positioning ribs (22) is two, and the two positioning ribs (22) are in the form of wing-shaped structures and are arranged on both sides of the light guide (2).

7. A space-saving light guide fixing structure as claimed in claim 6, characterized in that: The two positioning ribs (22) are arranged on both sides of the light guide (2) along the Z direction, and the positioning groove (12) is also opened along the Z direction, and the two positioning ribs (22) are inserted into the positioning groove (12).

8. A space-saving light guide fixing structure as claimed in claim 1, characterized in that: The lower end of the buckle (11) has a slope (13) for facilitating the introduction of the limiting rib (21).

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