Tolerance adjusting mechanism

Abstract

The utility model provides a tolerance adjusting mechanism which comprises a nut, a sealing ring and a sliding groove part. The sliding groove part is used for being connected with an automobile lamp and comprises an upper sliding block, a lower sliding block and a connecting part, and the upper sliding block is connected with the lower sliding block through the connecting part. The outer diameter of the connecting part is smaller than that of the upper sliding block and the lower sliding block, so that a sliding groove is formed between the upper sliding block and the lower sliding block. A mounting space is formed in the connecting part, an upper through hole is formed in the upper sliding block, a lower through hole is formed in the lower sliding block, and the mounting space is communicated with the outside through the upper through hole and / or the lower through hole; the nut is provided with an internal thread through hole; the nut is positioned in the mounting space; the sealing ring is used for sealing and preventing water and is attached to the upper through hole of the upper sliding block, and the upper surface of the sealing ring is higher than the upper surface of the upper sliding block. According to the utility model, the external volume of the part can be reduced, the universality of the part is enhanced, the sealing and waterproof performance is optimized, and the part can be used as a nut fastening point without assembling other nuts.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting pieces, in particular to a tolerance adjustment mechanism. Background Art

[0002] With the advancement of technology, aesthetic standards for headlight design are rising, leading to changes in headlight shape. For example, elongated headlights are increasingly popular. However, these changes in headlight shape require higher assembly precision. Misaligned mounting holes can lead to cumulative tolerances in the Y direction, reducing installation efficiency. Furthermore, with seasonal changes, headlights experience significant temperature changes, and the inherent thermal expansion and contraction characteristics of these lights at different temperatures place even higher demands on tolerance compensation in all directions.

[0003] Existing tolerance adjustment parts are large, but the mounting space is small, making them unsuitable for existing headlights. Furthermore, existing tolerance adjustment parts offer poor sealing and waterproofing, particularly between the tolerance adjustment parts and the body sheet metal, making them difficult to meet the waterproofing requirements of real-world use. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a tolerance adjustment mechanism that reduces the parts space and optimizes the waterproof sealing effect through ingenious structural design.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A tolerance adjustment mechanism includes a nut, a sealing ring, and a slide groove;

[0007] The chute portion is used to connect the vehicle lamp and includes an upper slider, a lower slider, and a connecting portion, wherein the upper slider and the lower slider are connected via the connecting portion; the outer diameter of the connecting portion is smaller than the outer diameters of the upper slider and the lower slider, so that a chute is formed between the upper slider and the lower slider; an installation space is defined within the connecting portion, the upper slider is defined with an upper through hole, the lower slider is defined with a lower through hole, and the installation space is communicated with the outside via the upper through hole and / or the lower through hole;

[0008] The nut is provided with an internal threaded through hole; the nut is located in the installation space;

[0009] The sealing ring is used for sealing and waterproofing, is fitted with the upper through hole of the upper slider, and the upper surface of the sealing ring is higher than the upper surface of the upper slider.

[0010] Preferably, the outer edge of the sealing ring is provided with an outer edge protrusion; the upper through hole is provided with a recessed portion;

[0011] After the tolerance adjustment mechanism is assembled, the outer edge protrusion is located in the recess.

[0012] Preferably, the inner edge of the sealing ring is provided with an inner edge protrusion.

[0013] Preferably, the chute portion is made of high-temperature nylon and glass fiber.

[0014] Preferably, the sealing ring is made of rubber.

[0015] Preferably, the sealing ring and the slide groove portion are integrally formed by a two-color injection molding process.

[0016] Preferably, the installation space is a hexagonal prism-shaped space, and the nut is a hexagonal nut.

[0017] Preferably, it further comprises 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 threaded blind hole.

[0018] Preferably, the sealing ring is further provided with an undercut, and the upper through hole is provided with an undercut groove cooperating with the undercut; when the sealing ring is fitted with the upper through hole, the undercut is located in the undercut groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The utility model uses the special structural design of the slide groove and the sealing ring to ensure that the tolerance adjustment mechanism has better sealing and waterproof performance after assembly.

[0021] 2. The utility model reduces the external volume of the tolerance adjustment mechanism through the special structural design of the nut and the slide groove, has better versatility, and also allows the part to be used as a nut fastening point without the need to assemble other nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0023] Figure 1 Schematic diagram of the structure of the tolerance adjustment mechanism in the first and second embodiments of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the chute portion in the first and second embodiments of the present invention;

[0025] Figure 3 Schematic bottom view of the chute portion in the first and second embodiments of the present invention;

[0026] Figure 4 Schematic cross-sectional view of the tolerance adjustment mechanism in the first embodiment of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the sealing ring described in the first and second embodiments of the present utility model;

[0028] Figure 6 It is a cross-sectional schematic diagram of the tolerance adjustment mechanism described in the second embodiment of the present invention.

[0029] The figure shows:

[0030] 1- nut;

[0031] 2-sealing ring; 21-outer edge protrusion; 22-inner edge protrusion; 23-undercut;

[0032] 3-chute portion; 31-upper slider; 32-lower slider; 33-connecting portion; 34-installation space; 35-upper through hole; 36-lower through hole; 37-recessed portion;

[0033] 4-bolts;

[0034] 5-body sheet metal;

[0035] 6-Nut extension. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures. In addition, all directional indications in this application (such as up, down, left, right, front, back, bottom, etc.) are only used to explain the relative position relationship and movement of various components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly.

[0039] First embodiment

[0040] This embodiment provides a tolerance adjustment mechanism, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, it includes a nut 1, a sealing ring 2, and a slide groove portion 3.

[0041] As for the design of the chute portion 3, Figure 2 、 Figure 3 As shown, it is used to connect the car lights, including an upper slider 31, a lower slider 32 and a connecting portion 33. The upper slider 31 and the lower slider 32 are connected by the connecting portion 33. The outer diameter of the connecting portion 33 is smaller than the outer diameters of the upper slider 31 and the lower slider 32, so that a slide groove is formed between the upper slider 31 and the lower slider 32. An installation space 34 is provided inside the connecting portion 33, and the installation space 34 is used to install the nut 1. The upper slider 31 is provided with an upper through hole 35, and the lower slider 32 is provided with 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 be connected to the external space through the upper through hole 35 or the lower through hole 36. Furthermore, the slide groove portion 3 is made of high-temperature nylon and glass fiber, which can make the slide groove portion 3 resistant to high temperatures and have good toughness, and enhance the corrosion resistance of the component in a salt spray environment.

[0042] Regarding the design of the nut 1, it is internally threaded and positioned within the mounting space 34. The internally threaded through-hole, upper through-hole 35, and lower through-hole 36 of the nut 1 are coaxially arranged, allowing the bolt 4 to penetrate the chute portion 3 and form a threaded connection with the nut 1. The shape and dimensions of the nut 1 are compatible with the mounting space 34, and the nut 1 can be overmolded within the mounting space 34 of the chute portion 3 via insert molding. This allows the outer wall of the nut 1 to conform to the inner wall of the mounting space 34, thereby minimizing any movement of the 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 the nut 1 and the bolt 4 can be used together to prevent rotation.

[0044] As for the design of the sealing ring 2, Figure 1 、 Figure 5As shown, the sealing ring 2 is used for waterproofing and fits in the upper through-hole 35 on the upper slider 31. The upper surface of the sealing ring is higher than the upper surface of the upper slider, ensuring a tight fit with the bolt 4 and the vehicle body sheet metal 5, achieving a waterproof seal. Furthermore, the outer edge of the sealing ring 2 is provided with an outer edge protrusion 21, and the upper through-hole 35 is provided with 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. Thus, the recess 37 can position 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 outer edge protrusion 21 and the recess 37 can be the same number, and can be one, two, or more, which is not limited in this embodiment. Furthermore, the inner edge of the sealing ring 21 is provided with an inner edge protrusion 22, which can ensure a tighter fit between the sealing ring 2 and the bolt 4, enhancing the waterproof seal. Furthermore, the sealing ring 2 is made of rubber, which can make the sealing ring 2 have better sealing, waterproof, fit and durability. Furthermore, the sealing ring 2 and the chute part 3 are integrally formed using a two-color injection molding process, making the fit between the two more firm and stable, and less likely to leak.

[0045] Furthermore, if Figure 5 As shown, the sealing ring 2 is further provided with a plurality of undercuts 23, and the upper through hole 35 is provided with an undercut groove cooperating with the undercut 23, so that when the sealing ring 2 is fitted with the upper through hole 35, the undercut 23 is located in the undercut groove, thereby increasing the stability of the sealing ring 2. In this way, 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, so that the sealing ring 2 is resistant to torsion and pulling out.

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

[0047] By utilizing the tolerance adjustment mechanism provided in this embodiment, the following advantages can be achieved: First, the coordinated design of the chute and the sealing ring ensures that the tolerance adjustment mechanism has excellent sealing and waterproofing performance after assembly. Second, the unique structural design of the nut and chute reduces the external volume of the tolerance adjustment mechanism, enhancing its versatility and allowing it to be used as a nut fastening point without the need for additional nuts.

[0048] Second embodiment

[0049] This embodiment provides a tolerance adjustment mechanism, such as Figure 1-3 、 Figure 5 、 Figure 6 As shown, the structure of this tolerance adjustment mechanism is substantially the same as that of the rivet stud pull riveting mechanism described in the first embodiment, both comprising a nut 1, a sealing ring 2, and a slide groove 3. The difference is that the mechanism provided in this embodiment further comprises a nut extension 6, one end of which 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, the thread of which 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 further improves the waterproof sealing performance of the first embodiment.

[0050] The working principle of the tolerance adjustment mechanism provided in this embodiment is described as follows: Figure 6 As shown, during assembly, the tolerance adjustment mechanism is used with the nut 1 positioned within the mounting space 34 within the chute 3. During assembly, the chute 3 connects to the lamp mating structure, the upper slider 31 contacts the body sheet metal 5, and the bolt 4 passes through the body sheet metal 5, threading the upper through-hole 35 into the internal threads of the nut 1 and the nut extension 6. During tightening of the bolt 4, the sealing ring 2 is squeezed by the upper slider 31, deforming and tightly fitting the bolt 4, thereby achieving a seal.

[0051] The above describes the specific embodiments of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the scope of the technical concept of this utility model.

Claims

1. A tolerance adjustment mechanism, characterized in that: Including nut, sealing ring and slide groove; The chute portion is used to connect the vehicle lamp and includes an upper slider, a lower slider, and a connecting portion, wherein the upper slider and the lower slider are connected via the connecting portion; the outer diameter of the connecting portion is smaller than the outer diameters of the upper slider and the lower slider, so that a chute is formed between the upper slider and the lower slider; an installation space is defined within the connecting portion, the upper slider is defined with an upper through hole, the lower slider is defined with a lower through hole, and the installation space is communicated with the outside via the upper through hole and / or the lower through hole; The nut is provided with an internal threaded through hole; the nut is located in the installation space; The sealing ring is used for sealing and waterproofing, is fitted with the upper through hole of the upper slider, and the upper surface of the sealing ring is higher than the upper surface of the upper slider.

2. A tolerance adjustment mechanism according to claim 1, characterized in that: The outer edge of the sealing ring is provided with an outer edge protrusion; the upper through hole is provided with a recessed portion; After the tolerance adjustment mechanism is assembled, the outer edge 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 chute portion is made of high-temperature nylon and glass fiber.

5. The tolerance adjustment mechanism according to claim 1, characterized in that: The sealing ring is made of rubber.

6. The tolerance adjustment mechanism according to claim 1, characterized in that: The sealing ring and the slide groove are integrally formed by a two-color injection molding process.

7. The tolerance adjustment mechanism according to claim 1, characterized in that: The installation space is a hexagonal column-shaped space, and the nut is a hexagonal nut.

8. The tolerance adjustment mechanism according to claim 1, characterized in that: 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 threaded blind hole.

9. The tolerance adjustment mechanism according to claim 1, characterized in that: The sealing ring is further provided with an undercut, and the upper through hole is provided with an undercut groove cooperating with the undercut; when the sealing ring is fitted with the upper through hole, the undercut is located in the undercut groove.

Images