Inner rear-view mirror base pre-hanging bolt structure

Abstract

The utility model relates to the field of automobile inside rear-view mirrors, and discloses an inside rear-view mirror base pre-hanging bolt structure which comprises an inside rear-view mirror base and a plurality of fastening bolts, a plurality of first mounting holes are formed in the inside rear-view mirror base, a plurality of second mounting holes are formed in a top cover metal plate, and the first mounting holes correspond to the second mounting holes one to one. A plurality of limiting blocks are fixedly connected into the first mounting hole in the circumferential direction, and fastening bolts can be pre-hung on the limiting blocks. According to the technical scheme, the problems that in the installation process of an existing inside rear-view mirror, operation is complex, bolts are prone to falling off, and assembly efficiency is low are solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive rearview mirrors, specifically to a pre-mounted bolt structure for a rearview mirror base. Background Technology

[0002] In the production of small and micro commercial vehicles, due to the limited interior space layout, in order to make full use of the limited space and meet the overall design requirements of the vehicle, the interior rearview mirror generally adopts a design scheme that integrates with the front dome light. In this design scheme, the interior rearview mirror base has two No. 1 mounting holes, and the corresponding top cover sheet metal has two No. 2 mounting holes.

[0003] In actual assembly, the assembly worker needs to hold the rearview mirror in one hand, aligning the first mounting hole of the rearview mirror base with the second mounting hole of the roof sheet metal; simultaneously, the other hand needs to attach a bolt to the head of a power tool, and then operate the power tool to lock the rearview mirror base onto the roof sheet metal using the bolt, thus completing the fixed installation of the rearview mirror. However, this traditional installation method has significant drawbacks. Because the assembly process involves multiple delicate steps, it not only demands extremely high levels of skill and precision from the worker, but also makes the bolts prone to accidental loss during the complex operation. Once a bolt falls out, the assembly process is forced to stop, requiring extra time to find and reinstall the bolt. This not only significantly extends the assembly cycle but also severely restricts the improvement of production efficiency, making it difficult to meet the demands of modern automobile manufacturing for high-efficiency production. Utility Model Content

[0004] The present invention aims to provide a pre-mounted bolt structure for the interior rearview mirror base to solve the problems of complex operation, easy bolt loss, and low assembly efficiency in the existing interior rearview mirror installation process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pre-mounted bolt structure for an interior rearview mirror base, comprising an interior rearview mirror base and a plurality of fastening bolts, wherein the interior rearview mirror base is provided with a plurality of first mounting holes, and the top cover sheet metal is provided with a plurality of second mounting holes, wherein the first mounting holes correspond one-to-one with the second mounting holes, and wherein a plurality of limiting blocks are fixedly connected circumferentially within the first mounting holes, and the fastening bolts can be pre-mounted on the limiting blocks.

[0006] The beneficial effects of this solution are as follows: During the actual assembly process, the fastening bolts are first pre-attached to the limiting blocks, then the first mounting hole of the interior rearview mirror base is aligned with the second mounting hole of the top cover sheet metal. Using power tools, the interior rearview mirror base is then locked onto the top cover sheet metal via the fastening bolts. Compared to traditional installation methods, this structure represents a significant technological improvement.

[0007] First, the operation process is simplified. Workers no longer need to perform multiple complex actions such as "holding the rearview mirror, tightening the bolts, and aligning the mounting holes" with one hand during assembly. They only need to align the rearview mirror base with the pre-attached bolts with the mounting hole number two to tighten it. This greatly reduces the difficulty of the assembly operation and the reliance on the worker's skill and accuracy. New employees can also quickly master the assembly method.

[0008] Secondly, it prevents fasteners from falling off. The limit block ensures that the fasteners are pre-fixed before installation, effectively preventing them from accidentally falling off during assembly due to excessive hand movements or operational errors. This prevents assembly process interruptions caused by fallen fasteners and reduces the time wasted searching for and reinstalling them.

[0009] Furthermore, it improves assembly efficiency. By reducing operational steps and preventing fastening bolts from falling off, the installation time for a single rearview mirror is significantly shortened, effectively increasing the number of mirrors assembled per unit time and meeting the needs of large-scale, high-efficiency production in modern automobile manufacturing.

[0010] Furthermore, it reduces assembly costs. Reducing the number of loose fasteners avoids component wear and tear, shortens the time spent on repetitive manual operations, and simultaneously increases production capacity due to improved assembly efficiency, thus achieving effective control over overall production costs.

[0011] Furthermore, the longitudinal section of the limiting block is triangular, and multiple limiting blocks together form a shrinkage hole with an inner diameter that gradually decreases from bottom to top within the No. 1 mounting hole.

[0012] The beneficial effects of this solution are as follows: In this technical solution, the longitudinal section of the limiting block is triangular and forms a shrinkage hole from bottom to top. When pre-attaching the fastening bolt, the larger lower opening can guide the bolt, making it easier to align and insert it into the first mounting hole, reducing assembly difficulty. As the fastening bolt moves upward, the shrinkage hole gradually fits tightly against the bolt, and the stability of the triangular structure enhances the limiting effect on the bolt, preventing it from shaking or falling off. Moreover, this fit ensures that the bolt remains vertical during installation, guaranteeing uniform force during tightening and improving the stability and reliability of the interior rearview mirror installation.

[0013] Furthermore, the side of the limiting block closest to the fastening bolt adopts an arc-shaped design.

[0014] The beneficial effects of this solution are as follows: In this technical solution, the limiting block adopts an arc-shaped design on the side near the fastening bolt, which can perfectly fit the cylindrical shape of the bolt, effectively reducing the gap and friction between them. This makes the bolt pre-hanging operation smoother and less labor-intensive, significantly improving assembly efficiency. At the same time, the arc-shaped structure can evenly distribute the pressure on the bolt, avoid stress concentration, enhance the stability of the bolt in the pre-hanging state, prevent it from accidentally falling off during assembly, and further ensure installation accuracy and reliability.

[0015] Furthermore, the thickness of the limiting block is 0.8-1mm.

[0016] The beneficial effects of this solution are as follows: By setting the thickness of the limiting block at 0.8-1mm, it ensures sufficient structural strength to securely fasten the pre-attached bolts without increasing assembly difficulty due to excessive thickness. The thinner thickness reduces resistance when the bolt passes through, facilitating quick tightening and improving assembly efficiency. Simultaneously, moderate thinning helps reduce material usage and overall weight, meeting lightweight design requirements without excessively weakening the limiting block's role in restricting and fixing the bolts.

[0017] Furthermore, the minimum inner diameter enclosed by the limiting block is 0.5-1mm smaller than the outer diameter of the fastening bolt.

[0018] The beneficial effects of this solution are as follows: In this technical solution, the minimum inner diameter enclosed by the limiting block is 0.5-1mm smaller than the outer diameter of the fastening bolt, forming a suitable interference fit. During assembly, this dimensional difference requires a slight external force when the fastening bolt is inserted into the limiting block. This allows it to be smoothly pre-attached to the threads of the fastening bolt through elastic deformation, while also generating sufficient friction to prevent the fastening bolt from slipping off, ensuring a stable and reliable pre-attached state. At the same time, this precise dimensional fit ensures that the fastening bolt remains centered during installation, effectively preventing tilting and ensuring precise alignment with the mounting holes on the top cover sheet metal, thus improving installation efficiency and assembly quality.

[0019] Furthermore, there are four limiting blocks, which are evenly distributed along the inner circumference of the first mounting hole.

[0020] The beneficial effects of this solution are as follows: In this technical solution, four limiting blocks evenly distributed along the inner circumference of the No. 1 mounting hole can provide stable support and limit the fastening bolts from multiple directions. On the one hand, this makes the fastening bolts more stable when pre-attached to the rearview mirror base, less prone to shaking or falling off, ensuring the reliability of the pre-attached state and providing convenience for subsequent assembly operations; on the other hand, the evenly distributed design ensures that the bolts are subjected to uniform force, and can better align with the mounting holes during the tightening process, improving the installation accuracy, and thus enhancing the overall stability and firmness of the rearview mirror installation.

[0021] Furthermore, the limiting block is made of plastic.

[0022] The beneficial effects of this solution are as follows: The limiting block in this technical solution is made of plastic, which has good toughness. When the fastening bolt is pre-attached, it can undergo slight elastic deformation, closely conforming to the shape of the bolt and easily embedding it for pre-attachment, without the need for complex tools or additional operations, significantly reducing assembly difficulty. Furthermore, due to the low density and light weight of plastic, the overall weight of the rearview mirror base can be effectively reduced, aligning with the trend of lightweight design for automotive components. This not only helps reduce overall vehicle energy consumption but also reduces material costs while ensuring structural strength, achieving a dual optimization of economic benefits and performance. Attached Figure Description

[0023] Figure 1 This is a three-dimensional view of a pre-mounted bolt structure for an interior rearview mirror base according to this utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the rearview mirror base of this utility model;

[0025] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method:

[0027] The reference numerals in the accompanying drawings include: interior rearview mirror base 1, fastening bolt 2, mounting hole number 1 3, and limit block 4.

[0028] Example

[0029] like Figure 1 The rearview mirror base pre-mounted bolt structure shown includes an interior rearview mirror base 1 and two fastening bolts 2.

[0030] like Figure 2-3 As shown, the upper side of the rearview mirror base 1 has two through-holes 3 extending to the bottom, and the top cover sheet metal has two mounting holes 2. The mounting holes 3 and 2 correspond one-to-one. Each mounting hole 3 has four limit blocks 4 integrally formed in the inner circumference of the inner circumference, which are evenly distributed along the inner circumference of the mounting hole 3. The fastening bolts 2 can be pre-attached to the limit blocks 4.

[0031] like Figure 3As shown, the longitudinal section of the limiting block 4 is triangular, and the four limiting blocks 4 together form a shrinkage hole with an inner diameter that gradually decreases from bottom to top within the first mounting hole 3. Simultaneously, the side of the limiting block 4 closest to the fastening bolt 2 adopts an arc-shaped design, which helps to better conform to the shape of the fastening bolt 2. The thickness of the limiting block 4 is 0.8-1mm, and the minimum inner diameter enclosed by the limiting blocks 4 is 0.5-1mm smaller than the outer diameter of the fastening bolt 2. Furthermore, the limiting blocks 4 are made of plastic, combining the advantages of toughness and lightweight. In this embodiment, the thickness of the limiting block 4 is 1mm, and the minimum inner diameter enclosed by the limiting blocks 4 is 0.8mm smaller than the outer diameter of the fastening bolt 2.

[0032] The specific implementation process is as follows:

[0033] During actual assembly, firstly, the fastening bolt 2 is pre-hung on the limiting block 4, and the structural characteristics of the limiting block 4 are used to ensure that the bolt is securely hung; then, the first mounting hole 3 of the interior rearview mirror base 1 is aligned with the second mounting hole of the top cover sheet metal; finally, with the help of power tools, the interior rearview mirror base 1 is firmly locked onto the top cover sheet metal by fastening the fastening bolt 2, thus completing the entire installation process.

[0034] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pre-mounted bolt structure for an interior rearview mirror base, characterized in that: The inner rear-view mirror base is provided with a plurality of first mounting holes, and the top cover metal plate is provided with a plurality of second mounting holes corresponding to the first mounting holes.

2. The pre-bolted mirror base structure of claim 1, wherein: The longitudinal section of the limiting block is triangular, and the plurality of limiting blocks form a tapered hole with a gradually decreasing inner diameter from bottom to top in the first mounting hole.

3. The pre-bolted mirror base structure of claim 2, wherein: The side of the limiting block close to the fastening bolt is designed in an arc shape.

4. The pre-bolted mirror base structure of claim 3, wherein: The thickness of the limiting block is 0.8-1mm.

5. The pre-bolted mirror base structure of claim 4, wherein: The minimum inner diameter surrounded by the limiting block is 0.5-1mm smaller than the outer diameter of the fastening bolt.

6. The pre-bolted mirror base structure of claim 5, wherein: The number of the limiting blocks is four, and the limiting blocks are evenly distributed along the inner periphery of the first mounting hole.

7. The pre-bolted mirror base structure of claim 6, wherein: The limiting block is made of plastic material.

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