Clamping and sealing structure for light guide strip of automotive trim atmosphere lamp

Abstract

The utility model relates to the technical field of automotive trim lighting, and discloses a clamping sealing structure of an automotive trim atmosphere lamp light guide strip, which comprises a lamp strip, a clamping groove body is fixedly connected to the outer wall of the lamp strip, a mounting base is attached to the outer wall of the clamping groove body, and a fixing assembly is arranged on the outer wall of the clamping groove body; the fixing assembly comprises a fixing ball, the fixing ball is arranged on one side of the outer wall of the clamping groove body, a first spring is fixedly connected to the inner wall of the clamping groove body, a compression plate is fixedly connected to one end of the first spring, a fixing block is fixedly connected to the outer wall of the compression plate, and a connecting plate is fixedly connected to the inner wall of the fixing block. The outer wall of the connecting plate is fixedly connected with a limiting rod, and the outer wall of the limiting rod is sleeved with a second spring. According to the LED lamp strip, the clamping groove body is formed in the outer wall of the lamp strip and matched with the mounting base to form the basic mounting frame, it is ensured that the fixing balls are continuously and stably clamped into the fixing holes, and the lamp strip is prevented from loosening or falling off or generating abnormal sound.

Description

Technical Field

[0001] This utility model relates to the field of automotive interior lighting technology, and in particular to a snap-fit ​​sealing structure for an automotive interior ambient light guide strip. Background Technology

[0002] With the increasing demand for intelligent and personalized vehicles, ambient lighting, as an important feature to enhance the visual aesthetics and passenger experience of the vehicle interior, is gradually becoming a standard feature in mid-to-high-end models. Light guides, as key components for transmitting ambient light sources, are typically embedded in the dashboard, door panels, and center console. Their installation stability and visual effect directly affect the stability of the ambient lighting system and the user experience. To ensure the adaptability of light guides to different curved surfaces and complex installation environments, a snap-fit ​​structure is usually used for installation.

[0003] Most existing light guides are made of plastic and are fixed to the interior trim panel by using slots and raised structures. This type of structure is easy to install, low in cost, and has good applicability in some low-vibration areas. Usually, there is no dedicated buffer sealing structure between the light guide and the trim piece; the connection is achieved only through plastic deformation or tight fitting, and some also rely on adhesives for auxiliary fixation. The overall structure has a certain degree of stability in initial use, but under long-term dynamic loads and high-temperature environments, it is prone to loosening due to thermal expansion and contraction or vehicle vibration.

[0004] The existing snap-fit ​​fixing structure of light guide strips generally lacks effective shock-resistant design and cannot fully absorb the micro-vibrations and impacts generated during vehicle operation. As a result, the clips may gradually loosen during long-term use, which may lead to displacement, detachment, or abnormal noise of the light guide strip, seriously affecting the overall aesthetics of the interior and the driving experience. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a snap-fit ​​sealing structure for automotive interior ambient light guide strips, aiming to improve the insufficient shock resistance of existing fixing structures, which can cause vibrations during vehicle operation, leading to loosening of the snap-fit, displacement, detachment, or abnormal noise of the light guide strip.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a snap-fit ​​sealing structure for an automotive interior ambient light guide strip, comprising a light strip, a slot body fixedly connected to the outer wall of the light strip, an mounting base fitted to the outer wall of the slot body, and a fixing component provided on the outer wall of the slot body;

[0007] The fixing component includes a fixing ball disposed on one side of the outer wall of the slot body. A spring is fixedly connected to the inner wall of the slot body. A compression plate is fixedly connected to one end of the spring. A fixing block is fixedly connected to the outer wall of the compression plate. A connecting plate is fixedly connected to the inner wall of the fixing block. A limit rod is fixedly connected to the outer wall of the connecting plate. A spring is sleeved on the outer wall of the limit rod. The inner wall of the fixing block is slidably connected to the outer wall of the fixing ball. A connecting rod is fixedly connected to the outer wall of the fixing ball. The fixing ball is slidably connected to the inner wall of the connecting block. A fixing hole is opened inside the connecting block.

[0008] Furthermore, a sealing strip is fixedly connected to the outer wall of the slot body, a sealing extension strip is fixedly connected to the outer wall of the sealing strip, a sealing head is attached to the outer wall of the sealing strip, a gasket is fixedly connected to the inner wall of the sealing head, a U-shaped spring is fixedly connected to the inner wall of the sealing head, and the outer wall of the sealing head is fixedly connected to the outer wall of the mounting base.

[0009] Furthermore, a positioning rod is fixedly connected to the outer wall of the slot, and a positioning hole is provided on the inner wall of the mounting base.

[0010] Furthermore, the positioning rod is disposed inside the positioning hole, and the outer wall of the connecting block is fixedly connected to the inner wall of the mounting base.

[0011] Furthermore, the outer wall of the compression plate is slidably connected to the inner wall of the slot, and the outer wall of the fixing block is slidably connected to the inner wall of the connecting block.

[0012] Furthermore, one end of the second spring is fixedly connected to the lower surface of the connecting rod, and the other end of the second spring is fixedly connected to the outer wall of the connecting plate.

[0013] Furthermore, one end of the second spring is fixedly connected to the outer wall of the connecting rod, and the outer wall of the sealing extension strip is attached to the inner wall of the U-shaped spring sheet.

[0014] Furthermore, the connecting block is disposed outside the slot body, and the mounting base is disposed outside the light strip.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, a slot body is set on the outer wall of the light strip, and a basic installation frame is formed in conjunction with the mounting base. A multi-level buffering and snapping mechanism composed of springs, compression plates, connecting rods, and fixing balls is set in the slot body. This enables automatic sliding fit and precise snapping positioning during the insertion of the light guide strip. During assembly, the fixing ball compresses the spring under force and enters the fixing hole on the mounting base to form a stable connection. During vehicle operation, this structure effectively offsets vibration and impact through the buffering and rebound effects of spring one and spring two, ensuring that the fixing ball is continuously and stably snapped into the fixing hole, preventing the light strip from loosening, falling off, or making abnormal noises, and significantly improving the shock resistance and connection reliability of the light guide strip under complex working conditions.

[0017] 2. In this utility model, a double-layer composite sealing structure is formed by setting a sealing strip, a sealing extension strip, and a sealing head on the outer wall of the slot body. The sealing extension strip, together with the U-shaped spring and gasket on the mounting base, provides elastic clamping force to ensure continuous sealing interface, thereby effectively preventing dust, moisture, or condensation from seeping into the snap-fit ​​area and the interior of the light strip, avoiding contamination of the lighting effect or failure of electronic components due to moisture. At the same time, the structure has good self-adaptive sealing ability and anti-condensation damage ability, which helps to improve the service life, sealing performance and environmental adaptability of the light guide system. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a snap-fit ​​sealing structure for an automotive interior ambient lighting light guide strip proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the slot structure of a snap-fit ​​sealing structure for an automotive interior ambient light guide strip proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of a compression plate structure for a snap-fit ​​sealing structure of an automotive interior ambient light guide strip proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the fixing block structure of the snap-fit ​​sealing structure of the automotive interior ambient light guide strip proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the sealing head structure of a snap-fit ​​sealing structure for an automotive interior ambient light guide strip proposed in this utility model.

[0023] Legend:

[0024] 1. LED strip; 2. Slot body; 3. Mounting base; 4. Positioning rod; 5. Positioning hole; 6. Connecting block; 7. Fixing block; 8. Sealing strip; 9. Spring 1; 10. Compression plate; 11. Fixing ball; 12. Connecting rod; 13. Spring 2; 14. Connecting plate; 15. Limiting rod; 16. Fixing hole; 17. Sealing extension strip; 18. Sealing head; 19. Gasket; 20. U-shaped spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-5 This utility model provides an embodiment of a snap-fit ​​sealing structure for an ambient light guide strip in automotive interior lighting, including a light strip 1. The light strip 1 is the core lighting component of this structure, used to conduct ambient light and provide a visual experience inside the vehicle. Its outer wall is fixedly connected to a slot body 2, and the snap-fit ​​and sealing structure achieves installation fixation and environmental protection. The outer wall of the light strip 1 is fixedly connected to the slot body 2, and the outer wall of the slot body 2 is fitted with a mounting base 3. The mounting base 3 is fixedly set on the interior panel of the vehicle and cooperates with the slot body 2 to form an installation frame, serving as a support platform for the entire structure. Its inner wall is provided with positioning holes 5 and connecting blocks 6 and other auxiliary assembly structures to ensure that the light strip 1 is accurately snapped and maintains structural stability. The outer wall of the slot body 2 is provided with fixing components.

[0027] The fixing component includes a fixing ball 11 located on the outside of the slot body 2. Under structural stress, it can slide into the fixing hole 16 in the connecting block 6, achieving automatic locking and fixing of the light guide strip. Its spherical design facilitates press-fit sliding and provides stable insertion locking force. The fixing ball 11 is located on one side of the outer wall of the slot body 2. A spring 9 is fixedly connected to the inner wall of the slot body 2. The spring 9 acts as a structural buffer element, absorbing assembly force or dynamic load during installation or vehicle vibration, providing stable rebound force, and ensuring continuous fit between structures. One end of the spring 9 is fixedly connected to a compression plate 10. A fixing block 7 is fixedly connected to the outer wall of the compression plate 10. The fixing block 7 provides a supporting base for the fixing ball 11 and the connecting structure, and internally slides to engage with the fixing ball 11. It is used to transmit assembly force and maintain coordinated structural movement during insertion. The inner wall of the fixing block 7 is fixedly connected to... There is a connecting plate 14, and a limiting rod 15 is fixedly connected to the outer wall of the connecting plate 14. A spring 13 is sleeved on the outer wall of the limiting rod 15. The spring 13 maintains a constant pressure locking state after the fixing ball 11 is inserted into the fixing hole 16, and provides elastic adaptive displacement buffer to prevent the structure from loosening or insufficient rebound. The inner wall of the fixing block 7 is slidably connected to the outer wall of the fixing ball 11. A connecting rod 12 is fixedly connected to the outer wall of the fixing ball 11. The fixing ball 11 is slidably connected to the inner wall of the connecting block 6. The connecting block 6 has a fixing hole 16 inside, which cooperates with the fixing ball 11 to insert and position. It is a key structural component to realize automatic locking and ensures that the light guide strip will not fall off due to vibration or impact.

[0028] Reference Figures 1-5A sealing strip 8 is fixedly connected to the outer wall of the slot body 2. The sealing strip 8 provides the first sealing interface and, together with the sealing head 18 and the sealing extension strip 17, forms a dustproof and waterproof structure between the light guide strip and the mounting base 3, preventing moisture and dust from entering the lamp body. A sealing extension strip 17 is fixedly connected to the outer wall of the sealing strip 8, and a sealing head 18 is fitted to the outer wall of the sealing strip 8. A gasket 19 is fixedly connected to the inner wall of the sealing head 18, and a U-shaped spring 20 is fixedly connected to the inner wall of the sealing head 18. The U-shaped opening of the U-shaped spring 20 is used to contain and press the sealing extension strip 17, providing continuous elastic pressure to ensure that the sealing interface remains tightly fitted under thermal expansion and contraction or vibration conditions, preventing dust and moisture from entering. The outer wall of the sealing head 18 is fixedly connected to the outer wall of the mounting base 3, and a positioning rod 4 is fixedly connected to the outer wall of the slot body 2. A positioning hole 5 is opened on the inner wall of the mounting base 3, and the positioning rod 4 is set inside the positioning hole 5. The positioning hole 5 is used to cooperate with the positioning rod 4 to achieve quick alignment. To prevent the light guide strip from shifting, tilting, or being installed backwards during installation, the outer wall of the connecting block 6 is fixedly connected to the inner wall of the mounting base 3, the outer wall of the compression plate 10 is slidably connected to the inner wall of the slot body 2, the outer wall of the fixing block 7 is slidably connected to the inner wall of the connecting block 6, and one end of the second spring 13 is fixedly connected to the lower surface of the connecting rod 12. The connecting rod 12 serves as a snap-fit ​​transmission mechanism, transmitting the pressing force to the spring to achieve the rebound and positional stability of the fixed ball 11, preventing the fixed ball 11 from shifting or loosening during vehicle vibration. The other end of the second spring 13 is fixedly connected to the outer wall of the connecting plate 14, and one end of the second spring 13 is fixedly connected to the outer wall of the connecting rod 12. The outer wall of the sealing extension strip 17 is attached to the inner wall of the U-shaped spring piece 20. The connecting block 6 is located outside the slot body 2, and the mounting base 3 is located outside the light strip 1. The mounting base 3 serves as a support platform for the entire structure. Its inner wall is provided with positioning holes 5 and auxiliary assembly structures such as the connecting block 6 to ensure that the light strip 1 is accurately snapped in place and maintains structural stability.

[0029] Working principle: When installing the light guide strip 1 using this structure, firstly, the slot body 2, which is fixedly connected to the outer wall, is fitted and assembled with the mounting base 3 to form a basic connection frame. The mounting base 3 is pre-fixed inside the car interior panel. A spring 9 is installed inside the slot body 2, and one end of the spring 9 is connected to the outer wall of the compression plate 10. A fixing block 7 is fixedly connected to the outer wall of the compression plate 10. A fixing ball 11 is slidably connected to the inner wall of the fixing block 7. When the slot body 2 and the mounting base 3 are assembled and connected, the axial extrusion force generated during the insertion of the light guide strip pushes the fixing... The ball 11 moves inward, which in turn drives the connecting rod 12 connected to it to compress the second spring 13, so that the fixed ball 11 can smoothly enter the fixing hole 16 provided by the connecting block 6 in the mounting base 3, and complete the reliable snap-fit ​​positioning. Since the fixing block 7 is connected to the first spring 9 through the compression plate 10, if vibration or dynamic load occurs during vehicle operation, the first spring 9 can provide effective buffering and rebound force, thereby ensuring that the fixed ball 11 continues to maintain the snap-fit ​​state, preventing the light strip 1 from loosening, falling off or making abnormal noise, and improving the stability and shock resistance of the assembly structure under dynamic working conditions.

[0030] In addition, to enhance the sealing performance of the light guide strip, a sealing strip 8 is provided on the outer wall of the slot body 2. A sealing extension strip 17 extends from one side of the sealing strip 8, which is set along the length of the light guide strip and forms a linear fit with the surface of the sealing head 18 on the outer wall of the mounting base 3. A sealing head 18 is also fitted on the outside of the sealing strip 8. A gasket 19 and a U-shaped spring 20 are provided on the inner wall of the sealing head 18. The U-shaped spring 20 provides a stable clamping force on the sealing extension strip 17 to ensure its continuous fit. The sealing head 18 is fixed on the outer wall of the mounting base 3, forming an overall closed seal between the light strip 1 and the mounting structure. When the light strip 1 passes through the slot body 2, the sealing extension strip 17 is sealed. After the slot 2 is installed, the sealing strip 8 fits into the sealing head 18, and the sealing extension strip 17 is inserted into the U-shaped spring 20 to form a flexible press. The gasket 19 further enhances the fit under the structural compression, thus forming a double sealing interface. During vehicle operation, this sealing structure can effectively prevent dust, moisture and condensate from seeping into the lamp strip 1 or the slot 2, avoiding optical area contamination, light efficiency attenuation or component damage; at the same time, it prevents condensation backflow caused by temperature changes from damaging the sealing effect, significantly improving the working stability, structural durability and sealing reliability of the light guide strip in the automotive environment.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A snap-fit ​​sealing structure for an ambient light guide strip in automotive interior lighting, comprising a light strip (1), characterized in that: The outer wall of the light strip (1) is fixedly connected to a slot body (2), the outer wall of the slot body (2) is fitted with an installation base (3), and the outer wall of the slot body (2) is provided with a fixing component; The fixing component includes a fixing ball (11), which is disposed on one side of the outer wall of the slot body (2). A spring (9) is fixedly connected to the inner wall of the slot body (2). A compression plate (10) is fixedly connected to one end of the spring (9). A fixing block (7) is fixedly connected to the outer wall of the compression plate (10). A connecting plate (14) is fixedly connected to the inner wall of the fixing block (7). A limit rod (15) is fixedly connected to the outer wall of the connecting plate (14). A spring (13) is sleeved on the outer wall of the limit rod (15). The inner wall of the fixing block (7) is slidably connected to the outer wall of the fixing ball (11). A connecting rod (12) is fixedly connected to the outer wall of the fixing ball (11). The fixing ball (11) is slidably connected to the inner wall of the connecting block (6). A fixing hole (16) is opened inside the connecting block (6).

2. The snap-fit ​​sealing structure for an automotive interior ambient light guide strip according to claim 1, characterized in that: A sealing strip (8) is fixedly connected to the outer wall of the slot body (2). A sealing extension strip (17) is fixedly connected to the outer wall of the sealing strip (8). A sealing head (18) is attached to the outer wall of the sealing strip (8). A gasket (19) is fixedly connected to the inner wall of the sealing head (18). A U-shaped spring (20) is fixedly connected to the inner wall of the sealing head (18). The outer wall of the sealing head (18) is fixedly connected to the outer wall of the mounting base (3).

3. The snap-fit ​​sealing structure for an automotive interior ambient light guide strip according to claim 1, characterized in that: The outer wall of the slot body (2) is fixedly connected with a positioning rod (4), and the inner wall of the mounting base (3) is provided with a positioning hole (5).

4. The snap-fit ​​sealing structure for an automotive interior ambient light guide strip according to claim 3, characterized in that: The positioning rod (4) is set inside the positioning hole (5), and the outer wall of the connecting block (6) is fixedly connected to the inner wall of the mounting base (3).

5. The snap-fit ​​sealing structure for an automotive interior ambient light guide strip according to claim 1, characterized in that: The outer wall of the compression plate (10) is slidably connected to the inner wall of the slot body (2), and the outer wall of the fixing block (7) is slidably connected to the inner wall of the connecting block (6).

6. The snap-fit ​​sealing structure for an automotive interior ambient light guide strip according to claim 1, characterized in that: One end of the second spring (13) is fixedly connected to the lower surface of the connecting rod (12), and the other end of the second spring (13) is fixedly connected to the outer wall of the connecting plate (14).

7. The snap-fit ​​sealing structure for an automotive interior ambient light guide strip according to claim 2, characterized in that: One end of the second spring (13) is fixedly connected to the outer wall of the connecting rod (12), and the outer wall of the sealing extension strip (17) is attached to the inner wall of the U-shaped spring sheet (20).

8. The snap-fit ​​sealing structure for an automotive interior ambient light guide strip according to claim 2, characterized in that: The connecting block (6) is located outside the slot body (2), and the mounting base (3) is located outside the light strip (1).

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