Tolerance adjustment mechanism

Abstract

A tolerance adjustment mechanism, comprising a nut (1), a sealing ring (2), and a slide groove portion (3). The slide groove portion (3) is adapted to be connected to a vehicle lamp, and comprises an upper slide block (31), a lower slide block (32) and a connecting portion (33); the upper slide block (31) is connected to the lower slide block (32) by means of the connecting portion (33); the outer diameter of the connecting portion (33) is smaller than the outer diameters of the upper slide block (31) and the lower slide block (32), so that a slide groove is formed between the upper slide block (31) and the lower slide block (32); a mounting space (34) is provided inside the connecting portion (33); the upper slide block (31) is provided with an upper through hole (35); the lower slide block (32) is provided with a lower through hole (36); the mounting space (34) is communicated with the outside by means of the upper through hole (35) and / or the lower through hole (36); the nut (1) is provided with an internally threaded through hole; the nut (1) is located in the mounting space (34); the sealing ring (2) is used for sealing and waterproofing and is fitted to the upper through hole (35) of the upper slide block (31), and the upper surface of the sealing ring (2) is higher than the upper surface of the upper slide block (31). According to the tolerance adjustment mechanism, the external volume of the component can be reduced, the versatility of the component is enhanced, the sealing and waterproof performance is optimized, and the component can also be used as a nut fastening point without the need of assembling other nuts.

Description

A tolerance adjustment mechanism

[0001] This application claims priority to Chinese Patent Application No. 202422906730X, filed on November 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of connector technology, and more specifically, to a tolerance adjustment mechanism. Background Technology

[0003] With the advancement of technology, people have increasingly higher aesthetic demands for the design of car lights, leading to changes in their shapes. For example, elongated headlights are becoming increasingly popular in the market. However, these changes in headlight shape increase the precision requirements for assembly. Misalignment of mounting holes can cause cumulative tolerances in the Y direction, reducing installation efficiency. Furthermore, during seasonal changes, headlights are affected by temperature, resulting in significant deformation. The thermal expansion and contraction characteristics at different temperatures place even higher demands on tolerance compensation in all directions.

[0004] Existing tolerance adjustment parts are too large, while the installation space for vehicle lights is limited, making them unsuitable for existing vehicle lights. Furthermore, the sealing and waterproofing performance of existing tolerance adjustment parts is poor, particularly the sealing between the tolerance adjustment parts and the vehicle body sheet metal, making it difficult to meet the waterproofing requirements of practical use. Application content

[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide a tolerance adjustment mechanism that, through ingenious structural design, reduces component space and optimizes waterproof sealing performance.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] A tolerance adjustment mechanism includes a nut, a sealing ring, and a sliding groove.

[0008] The grooved section is used to connect the vehicle lights and includes an upper slider, a lower slider, and a connecting section. The upper slider and the lower slider are connected by the connecting section. The outer diameter of the connecting section is smaller than the outer diameters of the upper slider and the lower slider, so that a groove is formed between the upper slider and the lower slider. The connecting section has an installation space inside. The upper slider has an upper through hole, and the lower slider has a lower through hole. The installation space communicates with the outside through the upper through hole and / or the lower through hole.

[0009] The nut is provided with an internally threaded through hole; the nut is located within the installation space;

[0010] The sealing ring is used for sealing and waterproofing, and it fits into the upper through hole of the upper slider, with the upper surface of the sealing ring being higher than the upper surface of the upper slider.

[0011] Preferably, the sealing ring has an outer edge protrusion; the upper through hole has a recess.

[0012] After the tolerance adjustment mechanism is assembled, the outer protrusion is located in the recess.

[0013] Preferably, the inner edge of the sealing ring is provided with an inner edge protrusion.

[0014] Preferably, the groove is made of high-temperature nylon and glass fiber.

[0015] Preferably, the sealing ring is made of rubber.

[0016] Preferably, the sealing ring and the sliding groove are integrally molded using a two-color injection molding process.

[0017] Preferably, the installation space is a hexagonal prism-shaped space, and the nut is a hexagonal nut.

[0018] Preferably, it further includes a nut extension; one end of the nut extension is connected to the nut, and the other end extends outward through the lower through hole; the nut extension is provided with an internal thread blind hole.

[0019] Preferably, the sealing ring is further provided with a buckle, and the upper through hole is provided with a buckle groove that mates with the buckle; when the sealing ring is in contact with the upper through hole, the buckle is located in the buckle groove.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] This application, through the special structural design of the sliding groove and the sealing ring, enables the tolerance adjustment mechanism to have better sealing and waterproof performance after assembly.

[0022] This application reduces the external volume of the tolerance adjustment mechanism through a special structural design of the nut and the slide, thus improving its versatility. It also allows the part to be used as a nut fastening point without the need to assemble other nuts. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 is a schematic diagram of the tolerance adjustment mechanism described in the first and second embodiments of this application;

[0025] Figure 2 is a structural schematic diagram of the sliding groove portion described in the first and second embodiments of this application;

[0026] Figure 3 is a bottom view of the slide section described in the first and second embodiments of this application;

[0027] Figure 4 is a cross-sectional schematic diagram of the tolerance adjustment mechanism described in the first embodiment of this application;

[0028] Figure 5 is a schematic diagram of the sealing ring described in the first and second embodiments of this application;

[0029] Figure 6 is a cross-sectional schematic diagram of the tolerance adjustment mechanism described in the second embodiment of this application.

[0030] The diagram shows:

[0031] 1-Nut;

[0032] 2-Sealing ring; 21-Outer edge protrusion; 22-Inner edge protrusion; 23-Undercut;

[0033] 3-Slide groove; 31-Upper slide block; 32-Lower slide block; 33-Connecting part; 34-Mounting space; 35-Upper through hole; 36-Lower through hole; 37-Recessed part;

[0034] 4- Bolts;

[0035] 5-Body sheet metal;

[0036] 6-Nut extension. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, all directional indications (such as up, down, left, right, front, back, bottom, etc.) in this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. Example 1

[0040] This embodiment provides a tolerance adjustment mechanism, as shown in Figures 1, 2, 3, 4, and 5, which includes a nut 1, a sealing ring 2, and a sliding groove 3.

[0041] Regarding the design of the sliding groove 3, as shown in Figures 2 and 3, it is used to connect the vehicle light and includes an upper slider 31, a lower slider 32, and a connecting part 33. The upper slider 31 and the lower slider 32 are connected by the connecting part 33. The outer diameter of the connecting part 33 is smaller than the outer diameters of the upper slider 31 and the lower slider 32, thus forming a sliding groove between the upper slider 31 and the lower slider 32. The connecting part 33 has an installation space 34 inside, which is used to install the nut 1. The upper slider 31 has an upper through hole 35, and the lower slider 32 has a lower through hole 36. The installation space 34, the upper through hole 35, and the lower through hole 36 are all connected, so that the installation space 34 can communicate with the external space through either the upper through hole 35 or the lower through hole 36. Furthermore, the sliding groove 3 is made of high-temperature nylon and glass fiber, which makes the sliding groove 3 resistant to high temperatures and has good toughness, enhancing the corrosion resistance of the component in a salt spray environment.

[0042] Regarding the design of nut 1, nut 1 has internal threads and is positioned within the mounting space 34. The internal threaded through hole, upper through hole 35, and lower through hole 36 of nut 1 are coaxially arranged, allowing bolt 4 to pass through the sliding groove 3 and be threadedly connected to nut 1. The shape and size of nut 1 match the mounting space 34, and it can be encapsulated in the mounting space 34 via insert injection molding, ensuring that the outer wall of nut 1 fits snugly against the inner wall of the mounting space 34, thereby reducing the amount of wobble of nut 1 relative to the mounting space 34.

[0043] Furthermore, the installation space 34 is a hexagonal prism-shaped space, and the nut 1 is a hexagonal nut, so that when the nut 1 and the bolt 4 are used together, they can prevent rotation.

[0044] Regarding the design of the sealing ring 2, as shown in Figures 1 and 5, the sealing ring 2 is used for sealing and waterproofing. It fits into the upper through hole 35 on the upper slider 31, and the upper surface of the sealing ring is higher than the upper surface of the upper slider. This allows it to fit tightly with the bolt 4 and the body sheet metal 5, achieving a sealing and waterproofing effect. Furthermore, the outer edge of the sealing ring 2 has an outer edge protrusion 21, and the upper through hole 35 has a recess 37. After the tolerance adjustment mechanism provided in this embodiment is assembled, the outer edge protrusion 21 is located in the recess 37. Therefore, the recess 37 can limit the sealing ring 2 through the outer edge protrusion 21, thereby limiting the radial offset of the sealing ring 2 and enhancing stability. It should be noted that the number of outer edge protrusions 21 and recesses 37 is the same; there can be one, two, or more. This embodiment does not limit this. Furthermore, the inner edge of the sealing ring 21 has an inner edge protrusion 22, which allows the sealing ring 2 to fit more tightly with the bolt 4, enhancing the waterproof sealing effect. Furthermore, the sealing ring 2 is made of rubber, which gives it better sealing performance, waterproofing, fit, and durability. Furthermore, the sealing ring 2 and the sliding groove 3 are integrally molded using a two-color injection molding process, making their fit more secure and stable, and less prone to leakage.

[0045] Furthermore, as shown in Figure 5, the sealing ring 2 is also provided with several undercuts 23, and the upper through hole 35 is provided with undercut grooves that cooperate with the undercuts 23, so that when the sealing ring 2 is in contact with the upper through hole 35, the undercuts 23 are located in the undercut grooves, thereby increasing the stability of the sealing ring 2. Thus, when there is an interference between the bolt 4 and the sealing ring 2, the sealing ring 2 will not rotate when the bolt 4 is screwed into the nut 1, and the sealing ring 2 will not be pulled out when the bolt 4 is screwed out, making the sealing ring 2 resistant to torsion and pull-out.

[0046] The working principle of the tolerance adjustment mechanism provided in this embodiment is described below. As shown in Figure 4, when the tolerance adjustment mechanism is used for assembly, the nut 1 is located in the installation space 34 inside the slide groove 3, the sealing ring 2 is fitted with the upper through hole 35 of the slide groove 3, and the outer protrusion 21 of the sealing ring 2 is located in the recess 37 of the upper through hole 35. During the assembly process, the slide groove 3 is connected to the mating structure of the headlight, the upper slider 31 contacts the body sheet metal 5, and the bolt 4 passes through the body sheet metal 5, the upper through hole 35 and the internal thread of the nut 1 to achieve thread engagement. During the tightening of the bolt 4, the sealing ring 2 is squeezed and deformed by the upper slider 31, thereby tightly fitting with the bolt 4, thus achieving a seal between the sealing ring 2 and the bolt 4, and simultaneously achieving a seal between the sealing ring 2 and the body sheet metal 5, and allowing the headlight to release stress in the Y direction.

[0047] By utilizing the tolerance adjustment mechanism provided in this embodiment, the following can be achieved: First, through the matching design of the sliding groove and the sealing ring, the tolerance adjustment mechanism can achieve good sealing and waterproof performance after assembly. Second, through the special structural design of the nut and the sliding groove, the external volume of the tolerance adjustment mechanism is reduced, resulting in better versatility. It also allows the part to be used as a nut fastening point without the need for additional nuts. Example 2

[0048] This embodiment provides a tolerance adjustment mechanism, as shown in Figures 1-3, 5, and 6. The structure of this tolerance adjustment mechanism is largely the same as that of the rivet stud riveting mechanism described in the first embodiment, both including a nut 1, a sealing ring 2, and a sliding groove 3. The difference lies in that the mechanism provided in this embodiment also includes a nut extension 6. One end of the nut extension 6 is connected to the nut 1, and the other end extends outward through the lower through hole 36. The nut extension 6 is provided with an internally threaded blind hole, and the thread is continuous with the internal thread of the nut 1, allowing the bolt 4 to be threadedly connected to the nut extension 6 after passing through the nut 1. This embodiment, based on the first embodiment, can further improve the waterproof sealing performance.

[0049] The working principle of the tolerance adjustment mechanism provided in this embodiment is described below. As shown in Figure 6, when the tolerance adjustment mechanism is used for assembly, the nut 1 is located in the mounting space 34 inside the slide groove 3. During assembly, the slide groove 3 is connected to the headlight mating structure, the upper slider 31 contacts the body sheet metal 5, and the bolt 4 passes through the body sheet metal 5, the upper through hole 35, and the internal threads of the nut 1 and the nut extension 6 to achieve thread engagement. During the tightening process of the bolt 4, the sealing ring 2 is deformed by the upper slider 31, thereby tightly fitting with the bolt 4 and achieving a seal between them.

[0050] The specific embodiments of this application have been described above. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application.

Claims

1. A tolerance adjustment mechanism, characterized in that, Includes nuts, sealing rings, and sliding grooves; The grooved section is used to connect the vehicle lights and includes an upper slider, a lower slider, and a connecting section. The upper slider and the lower slider are connected by the connecting section. The outer diameter of the connecting section is smaller than the outer diameters of the upper slider and the lower slider, so that a groove is formed between the upper slider and the lower slider. The connecting section has an installation space inside. The upper slider has an upper through hole, and the lower slider has a lower through hole. The installation space communicates with the outside through the upper through hole and / or the lower through hole. The nut is provided with an internally threaded through hole; the nut is located within the installation space; The sealing ring is used for sealing and waterproofing, and it fits into the upper through hole of the upper slider, with the upper surface of the sealing ring being higher than the upper surface of the upper slider.

2. A tolerance adjustment mechanism according to claim 1, wherein The sealing ring has an outer edge protrusion; the upper through hole has a recess. After the tolerance adjustment mechanism is assembled, the outer protrusion is located in the recess.

3. The tolerance adjustment mechanism according to claim 1, characterized in that, The inner edge of the sealing ring is provided with an inner edge protrusion.

4. The tolerance adjustment mechanism according to claim 1, characterized in that, The groove is made of high-temperature nylon and glass fiber.

5. A tolerance adjustment mechanism according to claim 1, wherein The sealing ring is made of rubber.

6. A tolerance adjustment mechanism according to claim 1, wherein The sealing ring and the sliding groove are integrally molded using a two-color injection molding process.

7. A tolerance adjustment mechanism as claimed in claim 1, wherein The installation space is a hexagonal prism-shaped space, and the nut is a hexagonal nut.

8. A tolerance adjustment mechanism according to claim 1, wherein It also includes a nut extension; one end of the nut extension is connected to the nut, and the other end extends outward through the lower through hole; the nut extension is provided with an internal thread blind hole.

9. The tolerance adjustment mechanism according to claim 1, characterized in that, The sealing ring is also provided with a buckle, and the upper through hole is provided with a buckle groove that mates with the buckle; when the sealing ring is in contact with the upper through hole, the buckle is located in the buckle groove.

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