Axial limiting structure for automobile bulb holder

Abstract

The utility model discloses an axial limiting structure for an automobile bulb socket, a mounting shell is sleeved on the bulb socket, a clamping part is arranged at the lower part of the bulb socket, the mounting shell is clamped with the bulb socket through the clamping part, the limiting structure comprises at least two bulges, the bulges are in free shapes and are arranged on the outer circumferential side wall of the upper part of the bulb socket, and the bulges are arranged on the outer circumferential side wall of the upper part of the bulb socket. And the mounting shell is limited between the clamping part and the bulge. When the bulb holder is assembled, the axial direction of the bulb holder can be stably limited, operation is easy, the assembling speed is increased, and the service life of the bulb holder is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an axial limiting structure for automotive bulb holders. Background Technology

[0002] In automotive lighting systems, the bulb socket is a crucial component connecting the bulb to the vehicle's electrical circuitry, and its structural reliability and stability are paramount. Among these components, the bulb socket's positioning mechanism is the core element ensuring correct installation and secure fixation, directly impacting the bulb's performance and the overall safety of the automotive lighting system.

[0003] Existing axial positioning structures for automotive bulb holders generally employ a multi-component assembly design, such as through snap-fit ​​or threaded connections. However, this design suffers from significant sealing issues. Due to the assembly gaps between components, rainwater can easily seep into the bulb holder. Once rainwater enters, it may cause a short circuit, damage the vehicle's electrical system, and even threaten driving safety. Furthermore, during installation, misalignment is prone to occur in the multi-component assembly, requiring operators to frequently adjust the positioning. This not only increases installation time and difficulty but also makes it difficult to ensure consistent installation quality, resulting in unstable performance of the positioning structure. Utility Model Content

[0004] The purpose of this invention is to provide an axial limiting structure for automotive bulb holders, which can ensure stable axial positioning of the bulb holder during assembly, simplifying operation, increasing assembly speed, and ensuring the service life of the bulb holder.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides an axial limiting structure for an automotive bulb holder. The bulb holder is fitted with a mounting shell, and the lower part of the bulb holder is provided with a snap-fit ​​part. The mounting shell is snapped into the bulb holder through the snap-fit ​​part. The limiting structure includes at least two protrusions. The protrusions are free-shaped and are provided on the outer circumferential sidewall of the upper part of the bulb holder, so that the mounting shell is limited between the snap-fit ​​part and the protrusions.

[0007] Preferably, the bulb holder includes a cylindrical portion located at the upper part of the bulb holder, and the mounting shell is provided with a mounting shell through hole, through which the mounting shell is fitted onto the cylindrical portion.

[0008] Preferably, the protrusion is provided on the outer side wall of the cylindrical portion, and the lower edge of the protrusion abuts against the upper surface of the mounting shell.

[0009] Preferably, the snap-fit ​​part is a snap-fit ​​boss, and the edge of the mounting shell through hole is provided with an extension platform in the direction towards the bulb holder. The extension platform matches the snap-fit ​​boss so that the snap-fit ​​boss snaps into the extension platform.

[0010] Preferably, a sealing ring is provided between the extension platform and the snap-fit ​​boss.

[0011] Preferably, the inner wall of the mounting shell through hole is provided with a plurality of grooves, the number of grooves being the same as the number of protrusions, and each protrusion being able to pass through a groove adjacent to the protrusion in the same direction.

[0012] Preferably, the number of protrusions is four.

[0013] Preferably, the bottom surface of one of the protrusions is provided with a limiting groove, and the top surface of the mounting shell is provided with a rib, which can be engaged in the limiting groove.

[0014] The present invention achieves the following beneficial technical effects compared to the prior art:

[0015] This utility model provides an axial limiting structure for automotive bulb holders. In use, the cylindrical portion of the bulb holder passes through the through hole of the mounting housing, and the first protrusion passes through the first groove, the second protrusion through the second groove, the third protrusion through the third groove, and the fourth protrusion through the fourth groove. This causes the extension platform on the mounting housing to engage with the engaging protrusion on the bulb holder. Then, the bulb holder is rotated counterclockwise, causing the mounting housing to be positioned between the engaging protrusion and the protrusions. This achieves stable axial limiting of the bulb holder, simplifies operation, and improves assembly speed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the axial limiting structure for automotive bulb holders in this utility model.

[0017] Figure 2 This is a schematic diagram of the axial limiting structure for automotive bulb holders from another angle in this invention:

[0018] Figure 3 This is an exploded view of the axial limiting structure for automotive bulb holders in this invention:

[0019] In the diagram: 1-bulb holder, 2-mounting shell, 3-cylindrical part, 4-mounting shell through hole, 5-clamping boss, 6-extension platform, 7-limiting groove, 8-protruding rib, 9-sealing ring, 10-first protrusion, 11-second protrusion, 12-third protrusion, 13-fourth protrusion, 14-first groove, 15-second groove, 16-third groove, 17-fourth groove. Detailed Implementation

[0020] This utility model provides an axial limiting structure for automotive bulb holders, such as... Figures 1-3 As shown, a mounting shell 2 is fitted onto the bulb holder 1. Specifically, the bulb holder 1 includes a cylindrical portion 3, which is located at the upper part of the bulb holder 1. The mounting shell 2 has a mounting shell through hole 4. The mounting shell 2 is fitted onto the cylindrical portion 3 through the mounting shell through hole 4, thus connecting the mounting shell 2 and the bulb holder 1. The lower part of the bulb holder 1 has a snap-fit ​​protrusion 5. The edge of the mounting shell through hole 4 has an extension platform 6 in the direction towards the bulb holder 1. The extension platform 6 matches the snap-fit ​​protrusion 5 so that the snap-fit ​​protrusion 5 snaps into the extension platform 6, allowing the mounting shell 2 to snap into the bulb holder 1 through the snap-fit ​​protrusion 5. This snap-fit ​​between the bulb holder 1 and the mounting shell 2 limits the axial downward movement of the bulb holder 1.

[0021] The limiting structure includes at least two protrusions; in this embodiment, there are four protrusions. These four protrusions can limit the mounting housing 2 from multiple directions, allowing for a more even distribution of the limiting force. The protrusions are free-form and are located on the outer circumferential sidewall of the cylindrical portion 3 of the bulb holder 1. The lower edge of the protrusion abuts against the upper surface of the mounting housing 2, limiting the axial upward movement of the bulb holder 1, thus limiting the mounting housing 2 between the snap-fit ​​boss 5 and the protrusion. This effectively limits the mounting housing 2 between the snap-fit ​​boss 5 and the protrusion of the bulb holder 1, preventing axial movement of the bulb holder 1, ensuring the stability of the relative position between the bulb holder 1 and the mounting housing 2, preventing the normal installation and use of the automotive bulb from being affected by loosening of the mounting housing 2, ensuring the service life of the bulb holder 1, and guaranteeing the reliability of the automotive lighting system. In a preferred embodiment, the bottom surface of one of the protrusions is provided with a limiting groove 7, and the top surface of the mounting housing 2 is provided with a protruding rib 8, which can be snapped into the limiting groove 7. This further enhances the connection stability between the mounting shell 2 and the bulb holder 1. In addition to axially limiting the bulb holder 1, the snap-fit ​​of the rib 8 and the limiting groove 7 prevents the bulb holder 1 from rotating in the circumferential direction to a certain extent, making the entire limiting structure more perfect and ensuring the stability of the car bulb holder 1.

[0022] A sealing ring 9 is provided between the extension platform 6 and the snap-fit ​​boss 5. The sealing ring 9 can effectively prevent external moisture, dust and other impurities from entering the gap between the bulb holder 1 and the mounting shell 2, improve the assembly sealing of the bulb holder 1 and the mounting shell 2, avoid safety hazards such as short circuits caused by impurities entering, ensure the service life of the car bulb holder 1, and ensure the normal operation of the car lighting system.

[0023] The inner wall of the mounting shell through hole 4 is provided with 4 grooves. Each protrusion can pass through the groove adjacent to the protrusion in the same direction. In this embodiment, in a clockwise direction, the protrusions include a first protrusion 10, a second protrusion 11, a third protrusion 12, and a fourth protrusion 13. The grooves include a first groove 14, a second groove 15, a third groove 16, and a fourth groove 17. The first protrusion 10 can pass through the first groove 14, the second protrusion 11 can pass through the second groove 15, the third protrusion 12 can pass through the third groove 16, and the fourth protrusion 13 can pass through the fourth groove 17. Specifically, when assembling the mounting shell 2 with the bulb holder 1, the cylindrical portion 3 of the bulb holder 1 passes through the through hole 4 of the mounting shell, and the first protrusion 10 passes through the first groove 14, the second protrusion 11 passes through the second groove 15, the third protrusion 12 passes through the third groove 16, and the fourth protrusion 13 passes through the fourth groove 17, so that the extension platform 6 on the mounting shell 2 engages with the engaging protrusion 5 on the bulb holder 1. Then, the bulb holder 1 is rotated counterclockwise so that the bottom surface of each protrusion abuts against the upper surface of the mounting shell 2, and the protruding rib 8 engages in the limiting groove 7. This achieves stable axial positioning of the bulb holder 1, simplifies operation, and improves assembly speed.

[0024] The axial limiting structure for automotive bulb holder 1 provided by this utility model, in specific application, involves passing the cylindrical part 3 of the bulb holder 1 through the through hole 4 of the mounting shell, and passing the first protrusion 10 through the first groove 14, the second protrusion 11 through the second groove 15, the third protrusion 12 through the third groove 16, and the fourth protrusion 13 through the fourth groove 17, so that the extension platform 6 on the mounting shell 2 is engaged with the engaging protrusion 5 on the bulb holder 1. Then, the bulb holder 1 is rotated counterclockwise so that the mounting shell 2 is limited between the engaging protrusion 5 and the protrusion.

[0025] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An axial limiting structure for an automotive bulb holder, characterized in that: A mounting shell is fitted onto the bulb holder. The lower part of the bulb holder has a snap-fit ​​part. The mounting shell snaps into the bulb holder through the snap-fit ​​part. The limiting structure includes at least two protrusions. The protrusions are free-shaped and are located on the outer circumferential sidewall of the upper part of the bulb holder, so that the mounting shell is limited between the snap-fit ​​part and the protrusions.

2. The axial limiting structure for automotive bulb holder according to claim 1, characterized in that: The bulb holder includes a cylindrical part located at the top of the bulb holder. The mounting shell has a mounting shell through hole, and the mounting shell is fitted onto the cylindrical part through the mounting shell through hole.

3. The axial limiting structure for automotive bulb holders according to claim 2, characterized in that: The protrusion is provided on the outer side wall of the cylindrical part, and the lower edge of the protrusion abuts against the upper surface of the mounting shell.

4. The axial limiting structure for automotive bulb holder according to claim 2, characterized in that: The snap-fit ​​part is a snap-fit ​​boss, and the edge of the mounting shell through hole is provided with an extension platform in the direction towards the bulb holder. The extension platform matches the snap-fit ​​boss so that the snap-fit ​​boss snaps into the extension platform.

5. The axial limiting structure for automotive bulb holder according to claim 4, characterized in that: A sealing ring is provided between the extension platform and the snap-fit ​​boss.

6. The axial limiting structure for an automotive bulb holder according to claim 2, characterized in that: The inner wall of the mounting shell through hole is provided with a number of grooves, the number of grooves being the same as the number of protrusions, and each protrusion can pass through a groove adjacent to the protrusion in the same direction.

7. The axial limiting structure for an automotive bulb holder according to claim 1, characterized in that: The number of protrusions is 4.

8. The axial limiting structure for an automotive bulb holder according to claim 3, characterized in that: The bottom surface of the protrusion is provided with a limiting groove, and the top surface of the mounting shell is provided with a rib, which can be engaged in the limiting groove.

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