Car headlight bezel with end-to-end connected light guide strip

Abstract

This utility model relates to a tail-connected light guide strip for automotive headlight bezels. It is characterized by comprising a light guide strip body, with a tail end and a head end at each end. The head end has a rod, and the tail end has a slot for inserting the rod. The slot has evenly distributed claws around its outer circumference, which can retract inwards or expand outwards to fix or release the rod. This utility model has the following advantages and effects: it improves the ease of assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of headlight light guide technology, specifically to a headlight bezel-type light guide with end-to-end connection. Background Technology

[0002] The headlight light guide primarily utilizes total internal reflection to direct the light emitted by the LEDs from the PCB to the front panel or other structural components. Currently, light guides are mainly divided into two types: flexible and rigid. Flexible light guides are primarily made of polyethylene, while rigid light guides are primarily made of acrylic. Furthermore, some models use circular headlights for decoration, thus requiring compatible light guides that can be connected end-to-end to form a circle.

[0003] For example, Chinese patent document CN217559735U discloses a light guide for a rear combination lamp with a head-to-tail connection, including a light guide body, with a head end and a tail end respectively provided at both ends of the light guide body. The head end and the tail end cooperate with each other to form a ring-shaped light guide body. The head end is provided with a connector, and the tail end is provided with a plug-in. The head end and the tail end are connected to each other by the plug-in engaging with the inside of the connector.

[0004] In the above technical solution, the two ends of the light guide body are quickly connected and engaged by the set head end and tail end, making it a ring-shaped light guide body. This connection method mainly involves inserting the tail end into the head end, and increasing the positive pressure applied to the head end by squeezing the support rod inside the tail end, thereby increasing the friction between the two and thus fixing them together. However, this connection method requires overcoming a lot of friction during assembly and disassembly, making it relatively inconvenient. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a head-to-tail connecting light guide for automotive headlight rings, which can improve the convenience of disassembly and assembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a headlight bezel with a tail-to-tail connection, comprising a light guide body, wherein the two ends of the light guide body are respectively provided with a tail end and a head end, the head end is provided with an insertion rod, the tail end is provided with a slot for inserting the insertion rod, and the outer periphery of the slot is provided with claws evenly distributed in a circumferential pattern, the claws being able to retract inward or open outward to fix or release the insertion rod.

[0007] The present invention is further configured such that: a rotatable connecting sleeve is provided on the outer periphery of the tail end, and the connecting sleeve moves toward the tail end to push the claw to retract inward.

[0008] The present invention is further configured such that: the inner side of the connecting sleeve is provided with a pushing part, the inner diameter of the pushing part increases sequentially along the direction near the tail end to form an inclined pushing side wall, the outer side of the claw increases sequentially along the direction near the tail end to form an inclined connecting side wall, the connecting side wall and the pushing side wall cooperate with each other, and as the pushing side wall and the connecting side wall gradually come into contact, the claw can be pushed to retract inward.

[0009] The present invention is further configured such that: the outer periphery of the tail end is provided with an external thread, and the inner side of the connecting sleeve is provided with an internal thread, wherein the internal thread can form a threaded engagement with the external thread.

[0010] The present invention is further configured such that: the connecting sleeve is provided with a receiving groove on the side facing the head end, the receiving groove being used to receive the head end.

[0011] The present invention is further configured such that: the outer periphery of the connecting sleeve is provided with an outwardly extending connecting rod, and the end of the connecting rod is provided with a locking block.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] Because of the inward-retracting or outward-opening claws, after the insert rod is inserted into the slot, the claws can retract inward to press against the outer circumference of the insert rod, thus securing it. Furthermore, this securing structure allows the slot to be slightly larger than the insert rod, preventing friction between the insert rods when inserted. Similarly, when the insert rod needs to be removed from the slot, the claws can be opened outward to stop the pressure on the outer circumference of the insert rod, allowing it to be pulled out. Therefore, friction is avoided when inserting or removing the insert rod, improving the ease of assembly and disassembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the present invention.

[0016] Figure 3 This is an exploded view showing the connection between the tail end and the head end in this utility model;

[0017] Figure 4 This is a partially enlarged structural diagram of part A of this utility model.

[0018] In the figure: light guide strip body 1; tail end 2; slot 21; claw 22; connecting side wall 221; external thread 23; head end 3; insertion rod 31; connecting sleeve 4; pushing part 41; pushing side wall 411; receiving groove 42; connecting rod 5; locking block 6. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 4 As shown, this utility model discloses a tail-connected light guide for automotive headlight bezels, including a light guide body 1. The light guide body 1 has a tail end 2 and a head end 3 at both ends. The head end 3 has an insert rod 31 integrally formed with it. The tail end 2 has a slot 21 for inserting the insert rod 31. The slot 21 has evenly distributed claws 22 around its outer periphery. The claws 22 can retract inwards or open outwards to fix or release the insert rod 31. After inserting the insert rod 31 into the slot 21, the claws 22 can retract inwards to compress the outer periphery of the insert rod 31, thereby fixing or releasing it. The insertion rod 31 is fixed in place. In addition, by adopting this fixing structure, the size of the slot 21 can be set to be slightly larger than that of the insertion rod 31. In this way, when the insertion rod 31 is inserted into the slot 21, it can avoid contact and friction between them. Similarly, when it is necessary to pull the insertion rod 31 out of the slot 21, by opening the claw 22 outward, the compression on the outer periphery of the insertion rod 31 can be stopped, and then the insertion rod 31 can be pulled out of the slot 21. Therefore, when inserting or pulling the insertion rod 31 into the slot 21, it can avoid the influence of friction, thereby improving the convenience of disassembly and assembly.

[0022] In this embodiment, the principle of retracting the claw 22 inward is that a rotatable connecting sleeve 4 is provided on the outer periphery of the tail end 2. The connecting sleeve 4 can move toward the tail end 2 by rotating. Specifically, an external thread 23 is provided on the outer periphery of the tail end 2, and an internal thread is provided on the inner side of the connecting sleeve 4. Through the threaded engagement formed by the internal thread and the external thread 23, the connecting sleeve 4 can be moved toward the tail end 2 by rotating it. The locking force generated between the threads can effectively prevent the connecting sleeve 4 from moving erroneously, thereby ensuring the stability of the connection between the tail end 2 and the head end 3.

[0023] In addition, the inner side of the connecting sleeve 4 is provided with a pushing part 41. The inner diameter of the pushing part 41 increases sequentially in the direction close to the tail end 2 to form an inclined pushing side wall 411. The outer side of the claw 22 increases sequentially in the direction close to the tail end 2 to form an inclined connecting side wall 221. The connecting side wall 221 and the pushing side wall 411 cooperate with each other. When the connecting sleeve 4 moves toward the tail end 2, the pushing side wall 411 can gradually contact the connecting side wall 221, thereby pushing the claw 22 to retract inward.

[0024] It should be noted that the light guide strip body 1 is made of polyethylene material, which has better elasticity. The tail end 2, the head end 3 and the connecting sleeve 4 are preferably made of acrylic material, which has higher hardness than polyethylene material, thus ensuring the stability of the connection between the tail end 2 and the head end 3, and has a certain degree of elasticity. Thus, when the connecting sleeve 4 moves away from the tail end 2, the pushing side wall 411 can gradually separate from the connecting side wall 221, so that the claw 22 can open outward on its own. In the specific processing, the light guide strip body 1 and the tail end 2 and the head end 3 are formed by secondary injection molding.

[0025] In this embodiment, the connecting sleeve 4 is further provided with a receiving groove 42 on the side facing the first end 3. The receiving groove 42 is used to receive the first end 3. In this way, when the insertion rod 31 is inserted into the slot 21, the first end 3 can enter the receiving groove 42 and be received by the receiving groove 42. Thus, the connecting sleeve 4 can simultaneously cover the first end 3 and the tail end 2. When the first end 3 and the tail end 2 cooperate with each other to form the annular light guide strip body 1, the overall integrity can be improved.

[0026] In this embodiment, an outwardly extending connecting rod 5 is provided on the outer periphery of the connecting sleeve 4, and a locking block 6 is provided at the end of the connecting rod 5. The locking block 6 and the connecting rod 5 are integrally injection molded with the connecting sleeve 4. With the setting of the locking block 6, after the annular light guide strip body 1 is formed, it can be snapped into the corresponding slot of the vehicle lamp housing to achieve quick installation of the light guide strip body 1 as a whole.

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A type of end-to-end connecting light guide for automotive headlight rings, characterized in that, The light guide strip includes a light guide strip body, which has a tail end and a head end at both ends. The head end has a rod, and the tail end has a slot for inserting the rod. The slot has claws evenly distributed around its periphery. The claws can retract inward or open outward to fix or release the rod.

2. The end-to-end connecting light guide strip for automotive headlight bezels according to claim 1, characterized in that, The tail end is provided with a rotatable connecting sleeve on its outer periphery. The connecting sleeve moves toward the tail end to push the claw to retract inward.

3. The end-to-end connecting light guide strip for automotive headlight bezels according to claim 2, characterized in that, The inner side of the connecting sleeve is provided with a pushing part, and the inner diameter of the pushing part increases sequentially along the direction near the tail end to form an inclined pushing sidewall. The outer side of the claw increases sequentially along the direction near the tail end to form an inclined connecting sidewall. The connecting sidewall and the pushing sidewall cooperate with each other. As the pushing sidewall and the connecting sidewall gradually come into contact, the claw can be pushed to retract inward.

4. The end-to-end connecting light guide strip for automotive headlight rings according to claim 3, characterized in that, The tail end has an external thread on its outer periphery, and the connecting sleeve has an internal thread on its inner side. The internal thread can form a threaded fit with the external thread.

5. A tail-connected light guide strip for automotive headlight bezels according to claim 3, characterized in that, The connecting sleeve has a receiving groove on the side facing the head end, and the receiving groove is used to receive the head end.

6. A tail-connected light guide strip for automotive headlight bezels according to claim 5, characterized in that, The connecting sleeve has an outwardly extending connecting rod on its outer periphery, and the end of the connecting rod has a locking block.

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