Rearview mirror adjusting mechanism with tooth-shaped step positioning and latch fixing and rearview mirror

Abstract

The utility model discloses a tooth profile subgrade positioning and bolt fixed rear -view mirror adjusting mechanism and rear -view mirror, wherein tooth profile subgrade positioning and bolt fixed rear -view mirror adjusting mechanism, include: for with the fixed mounting seat of car body, install fixed gear disc, for with the mirror stem of rear -view mirror fixed and can with rear -view mirror common rotation, wear and set up in mounting seat and fixed gear disc, mirror stem cover is equipped with rotating gear disc, and rotating gear disc and fixed gear disc engage rotation, connecting component, including connecting pin and compression spring, and connecting pin is along the radial of mirror stem and enters rotating gear disc and mirror stem, to drive rotating gear disc, mirror stem and rear -view mirror common rotation, and one end of compression spring and mounting seat abut, and the other end abuts on mirror stem, to drive rotating gear disc and fixed gear disc engage fixed. Provide clear feedback and definite gear interval, make rear -view mirror visual angle adjustment more accurate controllable, and the industry pain point such as traditional ball hinge structure easy to deviate, bolt welding assembly complex, stepless regulation precision deficiency has been solved comprehensively.

Description

Technical Field

[0001] This utility model relates to the field of rearview mirror technology, and in particular to a rearview mirror adjustment mechanism with toothed positioning and pin fixing, and a rearview mirror having a rearview mirror adjustment mechanism with toothed positioning and pin fixing. Background Technology

[0002] In the automotive and trucking industries, rearview mirrors are crucial components for drivers to obtain rear and side visibility of the vehicle, and the performance of their adjustment mechanisms directly impacts driving safety and convenience. However, existing rearview mirror adjustment mechanisms in cars and trucks generally suffer from several problems that urgently need to be addressed.

[0003] From the perspective of stability adjustment, the traditional ball joint structure is a common structural form in the adjustment of rearview mirrors for cars and trucks. However, during vehicle operation, both cars and trucks are affected by vibrations from various sources. For cars, when driving on bumpy roads, the unevenness of the road surface causes the vehicle to vibrate vertically and horizontally. In addition, the engine running also causes a certain degree of vibration to the vehicle body. Trucks, due to their large mass and variable load, experience more complex and intense vibrations during operation, including vibrations from road bumps as well as vibrations caused by the inertial forces generated when the vehicle accelerates, decelerates, and turns. These vibrations are transmitted to the rearview mirror adjustment mechanism, and the traditional ball joint structure itself lacks sufficient positioning and locking capabilities, making it difficult to resist the influence of these vibrations, thus causing the rearview mirror angle to easily shift. When the rearview mirror angle shifts, the driver's field of vision is interfered with, making it impossible to accurately observe the situation behind and to the sides of the vehicle. This not only inconveniences the driver's operation but also greatly increases the risk to driving safety. To maintain a good field of vision, the driver needs to frequently manually adjust the rearview mirror angle, which undoubtedly distracts the driver's attention and further affects driving safety.

[0004] Regarding assembly complexity, many existing car and truck rearview mirror adjustment mechanisms are assembled using bolt nesting or welding. For automobile production, bolt nesting requires specialized tools for tightening and loosening bolts, and often necessitates multiple people working together to complete the assembly. This is because the assembly process requires precise alignment of the components to ensure the bolts pass accurately through the corresponding holes and are tightened to the appropriate force to guarantee the strength and stability of the connection. Truck rearview mirror adjustment mechanisms, due to their potentially more complex structure and larger size, present even greater challenges when using bolt nesting. Welding also presents problems. Whether for cars or trucks, welding requires specialized welding equipment and technicians, and the welding process necessitates strict control of welding parameters and quality to ensure the weld's strength and reliability. These complex assembly methods not only increase assembly difficulty but also lead to low production efficiency. The cumbersome assembly process, requiring significant time and manpower, increases production costs, hindering car and truck manufacturers from improving production efficiency and reducing product prices.

[0005] Regarding positioning accuracy, existing continuously variable adjustment mechanisms are common in the adjustment of rearview mirrors in cars and trucks. However, this adjustment method lacks clear feedback on the adjustment levels. When adjusting the rearview mirror angle, drivers can only rely on their own senses and experience to judge whether the angle is appropriate, making it difficult to precisely control the viewing angle. For car drivers, it may be necessary to quickly adjust the rearview mirror to the appropriate angle in different driving scenarios (such as city roads, highways, etc.), but because they cannot accurately perceive the adjustment range, they often need to try and adjust multiple times to find the right angle. Truck drivers also need to precisely adjust the rearview mirror angle according to the load and road conditions when transporting goods, but the continuously variable adjustment mechanism makes this process difficult, wasting time and potentially leading to inaccurate rearview mirror angle adjustments, affecting the driver's vision and driving safety.

[0006] In summary, existing rearview mirror adjustment mechanisms for automobiles and trucks have many problems in terms of adjustment stability, assembly complexity, and positioning accuracy. There is an urgent need for a new technical solution to solve these problems in order to improve the performance of rearview mirrors and the driver's driving experience. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a rearview mirror adjustment mechanism with toothed segmentation positioning and pin fixing. Through toothed segmentation and spring self-locking anti-vibration displacement, the rearview mirror adjustment angle can be locked. Furthermore, the assembly method of the pin and spring clip allows for rapid assembly by a single person within 3 minutes, improving assembly efficiency. In addition, each 30° toothed segment provides clear tactile feedback, improving adjustment accuracy and solving the problems of poor stability, complex assembly, and insufficient precision in traditional rearview mirror adjustments.

[0008] This utility model also proposes a rearview mirror with the aforementioned toothed positioning and pin-fixed rearview mirror adjustment mechanism.

[0009] The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to this utility model includes:

[0010] Mounting bracket for fixing to the vehicle body, wherein the mounting bracket is equipped with a fixing gear plate;

[0011] A mirror rod is used to fix to the rearview mirror and can rotate together with the rearview mirror. The mirror rod passes through the mounting base and the fixed gear plate. The mirror rod is fitted with a rotating gear plate, and the rotating gear plate meshes with the fixed gear plate to rotate.

[0012] The connecting assembly includes a connecting pin and a compression spring. The connecting pin passes radially through the rotating gear and the mirror rod to drive the rotating gear, the mirror rod, and the rearview mirror to rotate together. One end of the compression spring abuts against the mounting base, and the other end abuts against the mirror rod to drive the rotating gear to mesh and fix with the fixed gear.

[0013] The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to this utility model has at least the following beneficial effects: the meshing design of the rotating toothed disc and the fixed toothed disc, combined with the axial preload of the compression spring, ensures that the two fit tightly together to form a reliable gear lock, effectively resisting vibration interference caused by road bumps, rapid acceleration, or braking during vehicle operation, and keeping the rearview mirror angle locking error within a very small range, such as less than 0.5°, significantly improving the ability to maintain the adjusted position and avoiding frequent manual correction by the driver; at the same time, through the synergistic action of the connecting pin and the compression spring, the mirror rod, the rotating toothed disc, and the rearview mirror are connected as one unit, making the adjustment operation more direct and efficient. The elastic compensation design of the compression spring further optimizes the engagement clearance during the meshing process, ensuring both ease of operation and stability during locking. In addition, the structure adopts a standardized toothed locking mechanism with 30° increments per interval, replacing the traditional stepless adjustment method. This provides the driver with clear tactile feedback and precise intervals, making the rearview mirror angle adjustment more accurate and controllable. It is especially suitable for the multi-angle adjustment needs of different vehicle types such as cars and trucks. It comprehensively solves the industry pain points such as easy misalignment of traditional ball joint structures, complex bolt welding assembly, and insufficient precision of stepless adjustment, significantly improving the reliability and user experience of the rearview mirror adjustment mechanism.

[0014] According to some embodiments of the present invention, the rearview mirror adjustment mechanism with toothed positioning and pin fixing includes a rotating toothed disc with a connecting part. The peripheral wall of the connecting part is provided with a first connecting hole that penetrates radially along the connecting part. The peripheral wall of the mirror rod is provided with a second connecting hole that penetrates through the connecting part. The second connecting hole is arranged correspondingly to the first connecting hole. The connecting pin is placed in the first connecting hole and the second connecting hole.

[0015] According to some embodiments of the present invention, a rearview mirror adjustment mechanism with toothed positioning and pin fixing is provided, wherein a friction cylinder is installed in the mirror rod, the center line of the friction cylinder coincides with the center line of the first connecting hole, and the connecting pin is rotatably engaged with the inner circumferential surface of the friction cylinder.

[0016] According to some embodiments of the present invention, the rearview mirror adjustment mechanism with toothed positioning and pin fixing has a quick-installation structure for installing the connecting pin that passes through the rotating toothed disc and the mirror rod.

[0017] According to some embodiments of the present invention, the rearview mirror adjustment mechanism with toothed positioning and pin fixing includes a limiting part disposed at one end of the connecting pin and a retaining spring disposed at the other end of the connecting pin, and the connecting part is disposed between the limiting part and the retaining spring.

[0018] According to some embodiments of the present invention, the rearview mirror adjustment mechanism with toothed positioning and pin fixing has multiple indexing grooves and multiple indexing blocks evenly distributed circumferentially between the rotating toothed disk and the fixed toothed disk, and the indexing grooves and the indexing blocks are meshed one-to-one.

[0019] According to some embodiments of the present invention, in the rearview mirror adjustment mechanism with toothed positioning and pin fixing, adjacent indexing slots are 30° apart in the circumferential direction of the fixed toothed disc.

[0020] According to some embodiments of the present invention, the rearview mirror adjustment mechanism with toothed positioning and pin fixing has a compression spring sleeved on the mirror rod, the mirror rod having an annular portion located at the end of the compression spring away from the rotating toothed disc, and the compression spring and the annular portion engaging in abutment to drive the mirror rod and the rotating toothed disc to move together.

[0021] According to some embodiments of the present invention, the rearview mirror adjustment mechanism with toothed positioning and pin fixing has a dust cover on the side of the mounting base facing the fixed toothed disc, and the rotating toothed disc and the fixed toothed disc are placed inside the dust cover.

[0022] The rearview mirror according to this utility model includes the rearview mirror adjustment mechanism with toothed positioning and pin fixing as described in this utility model.

[0023] The rearview mirror according to this utility model has at least the following beneficial effects: the meshing structure of the fixed gear plate and the rotating gear plate realizes the gear positioning, and the pin fixing method of the connecting pin and the compression spring effectively resists the vibration interference during vehicle driving. At the same time, the quick-installation structure and modular design simplify the assembly process, and the precise meshing of the indexing groove and the indexing block ensures that the angle adjustment gear is clear. It has the advantages of stable and reliable structure, convenient and efficient assembly, accurate and clear positioning, and excellent vibration resistance.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a cross-sectional structural diagram of the rearview mirror adjustment mechanism with toothed positioning and pin fixing according to an embodiment of the present utility model.

[0027] Figure 2This is a schematic diagram of the overall structure of the rearview mirror adjustment mechanism with toothed positioning and pin fixing according to an embodiment of the present utility model.

[0028] Figure 3 This is an exploded structural diagram of the rearview mirror adjustment mechanism with toothed positioning and pin fixing according to an embodiment of the present invention.

[0029] Explanation of icon numbers:

[0030] Mounting base 100; fixing hole 101; fixing gear plate 110; indexing groove 1101; dust cover 120;

[0031] Mirror rod 200; second connecting hole 201; annular part 202; receiving cylinder 2021; rotating gear disk 210; connecting part 211; first connecting hole 21101; indexing block 212; friction cylinder 220;

[0032] Connecting pin 310; limiting part 311; retaining ring 312; compression spring 320. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] In the automotive and trucking industries, rearview mirrors are crucial components for drivers to obtain rear and side visibility of the vehicle, and the performance of their adjustment mechanisms directly impacts driving safety and convenience. However, existing rearview mirror adjustment mechanisms in cars and trucks generally suffer from several problems that urgently need to be addressed.

[0039] From the perspective of stability adjustment, the traditional ball joint structure is a common structural form in the adjustment of rearview mirrors for cars and trucks. However, during vehicle operation, both cars and trucks are affected by vibrations from various sources. For cars, when driving on bumpy roads, the unevenness of the road surface causes the vehicle to vibrate vertically and horizontally. In addition, the engine running also causes a certain degree of vibration to the vehicle body. Trucks, due to their large mass and variable load, experience more complex and intense vibrations during operation, including vibrations from road bumps as well as vibrations caused by the inertial forces generated when the vehicle accelerates, decelerates, and turns. These vibrations are transmitted to the rearview mirror adjustment mechanism, and the traditional ball joint structure itself lacks sufficient positioning and locking capabilities, making it difficult to resist the influence of these vibrations, thus causing the rearview mirror angle to easily shift. When the rearview mirror angle shifts, the driver's field of vision is interfered with, making it impossible to accurately observe the situation behind and to the sides of the vehicle. This not only inconveniences the driver's operation but also greatly increases the risk to driving safety. To maintain a good field of vision, the driver needs to frequently manually adjust the rearview mirror angle, which undoubtedly distracts the driver's attention and further affects driving safety.

[0040] Regarding assembly complexity, many existing car and truck rearview mirror adjustment mechanisms are assembled using bolt nesting or welding. For automobile production, bolt nesting requires specialized tools for tightening and loosening bolts, and often necessitates multiple people working together to complete the assembly. This is because the assembly process requires precise alignment of the components to ensure the bolts pass accurately through the corresponding holes and are tightened to the appropriate force to guarantee the strength and stability of the connection. Truck rearview mirror adjustment mechanisms, due to their potentially more complex structure and larger size, present even greater challenges when using bolt nesting. Welding also presents problems. Whether for cars or trucks, welding requires specialized welding equipment and technicians, and the welding process necessitates strict control of welding parameters and quality to ensure the weld's strength and reliability. These complex assembly methods not only increase assembly difficulty but also lead to low production efficiency. The cumbersome assembly process, requiring significant time and manpower, increases production costs, hindering car and truck manufacturers from improving production efficiency and reducing product prices.

[0041] Regarding positioning accuracy, existing continuously variable adjustment mechanisms are common in the adjustment of rearview mirrors in cars and trucks. However, this adjustment method lacks clear feedback on the adjustment levels. When adjusting the rearview mirror angle, drivers can only rely on their own senses and experience to judge whether the angle is appropriate, making it difficult to precisely control the viewing angle. For car drivers, it may be necessary to quickly adjust the rearview mirror to the appropriate angle in different driving scenarios (such as city roads, highways, etc.), but because they cannot accurately perceive the adjustment range, they often need to try and adjust multiple times to find the right angle. Truck drivers also need to precisely adjust the rearview mirror angle according to the load and road conditions when transporting goods, but the continuously variable adjustment mechanism makes this process difficult, wasting time and potentially leading to inaccurate rearview mirror angle adjustments, affecting the driver's vision and driving safety.

[0042] In summary, existing rearview mirror adjustment mechanisms for automobiles and trucks have many problems in terms of adjustment stability, assembly complexity, and positioning accuracy. There is an urgent need for a new technical solution to solve these problems in order to improve the performance of rearview mirrors and the driver's driving experience.

[0043] Therefore, such as Figures 1 to 3As shown, this utility model presents a rearview mirror adjustment mechanism with toothed positioning and pin fixing, comprising a mounting base 100, a mirror rod 200, and a connecting assembly. The mounting base 100 is used to fix itself to the vehicle body, for example, by screws through fixing holes 101 on its side. The mirror rod 200 is used to fix itself to the rearview mirror and can rotate with it, for example, by screws after the rearview mirror is fitted onto the mirror rod 200. Specifically, the mounting base 100 is equipped with a fixed gear plate 110, the mirror rod 200 passes through the mounting base 100 and the fixed gear plate 110, and the mirror rod 200 is fitted with a rotating gear plate 210, which meshes with the fixed gear plate 110 for rotation. Furthermore, the connecting assembly includes a connecting pin 310 and a compression spring 320. The connecting pin 310 passes radially through the rotating gear 210 and the mirror rod 200 to drive the rotating gear 210, the mirror rod 200 and the rearview mirror to rotate together. In addition, one end of the compression spring 320 abuts against the mounting base 100 and the other end abuts against the mirror rod 200 to drive the rotating gear 210 to engage and fix with the fixed gear 110. It should be noted that the meshing design of the rotating gear 210 and the fixed gear 110, combined with the axial preload of the compression spring 320, ensures that the two fit tightly together to form a reliable gear lock. This effectively resists vibration interference caused by road bumps, rapid acceleration, or braking during vehicle operation, keeping the rearview mirror angle locking error within a very small range, such as less than 0.5°. This significantly improves the ability to maintain the adjusted position and avoids frequent manual adjustments by the driver. Simultaneously, through the synergistic action of the connecting pin 310 and the compression spring 320, the mirror rod 200, the rotating gear 210, and the rearview mirror are integrated, making the adjustment operation more direct and efficient. The 0 elastic compensation design further optimizes the engagement clearance during the meshing process, ensuring both ease of operation and stability during locking. Furthermore, the structure employs a standardized toothed locking mechanism with 30° increments per interval, replacing the traditional stepless adjustment method. This provides drivers with clear tactile feedback and precise intervals, making rearview mirror angle adjustment more accurate and controllable. It is particularly suitable for the multi-angle adjustment needs of various vehicle types, such as cars and trucks. It comprehensively addresses industry pain points such as the ease of misalignment in traditional ball joint structures, complex bolt welding assembly, and insufficient precision in stepless adjustment, significantly improving the reliability and user experience of the rearview mirror adjustment mechanism.

[0044] Specifically, when adjusting the rearview mirror angle, an external force is applied to overcome the preload of the compression spring 320, temporarily disengaging the rotating gear 210 from the fixed gear 110. After the mirror rod 200 rotates the rearview mirror to the target angle, the external force is released, causing the compression spring 320 to push the rotating gear 210 back into engagement with the fixed gear 110. The connecting pin 310 radially passes through the rotating gear 210 and the mirror rod 200, ensuring synchronous rotation. During this process, the meshing tooth profile of the fixed gear 110 and the rotating gear 210 provides clear gear feedback, and the preload maintained by the compression spring 320 effectively resists vehicle vibration. Compared with existing technologies, ball joint structures rely on friction to maintain the angle, while this solution achieves mechanical interlocking through tooth meshing, significantly improving vibration resistance and stability. Furthermore, traditional bolt assembly requires multiple tightening steps, while this solution uses a pin and spring combination for rapid installation, improving assembly efficiency. Continuously adjustable mirrors rely on tactile feedback to judge the angle. This solution uses a graduated gear to provide perceptible gear positioning, improving adjustment accuracy. Through this technical solution, this application effectively prevents rearview mirror misalignment caused by vehicle vibration, reducing the frequency of manual correction by the driver. The pin-and-spring combination simplifies the assembly process and reduces production complexity. The graduated gear structure provides clear gear feedback, enabling the driver to quickly and accurately adjust the rearview mirror angle, improving driving safety.

[0045] Refer to Figure 1 and Figure 3In some embodiments of this utility model, the rotating gear disk 210 includes a connecting portion 211. The peripheral wall of the connecting portion 211 is provided with a first connecting hole 21101 that penetrates radially along the connecting portion 211. The peripheral wall of the lens rod 200 is provided with a second connecting hole 201 that penetrates through the lens. The second connecting hole 201 is arranged correspondingly to the first connecting hole 21101, and a connecting pin 310 is placed in the first connecting hole 21101 and the second connecting hole 201. The connecting portion 211 refers to a partial structure on the rotating gear disk 210 used for connection with the lens rod 200. Specifically, it can be implemented using a cylindrical boss structure, with its inner diameter matching the outer diameter of the lens rod 200 to achieve coaxial positioning. The first connecting hole 21101 and the second connecting hole 201 refer to through holes respectively opened on the peripheral walls of the connecting portion 211 and the lens rod 200. Specifically, they can be formed by drilling or stamping processes, and a through channel is formed when the axes of the two holes coincide. The connecting pin 310 refers to a cylindrical part inserted into the two holes, which can be a metal cylindrical pin or a pin with an anti-loosening structure. Specifically, during assembly, the connecting part 211 of the rotating gear 210 aligns with the mirror rod 200 through the first connecting hole 21101 and the second connecting hole 201, and the connecting pin 310 is inserted into the holes to form a rigid connection. When an external force is applied to the rearview mirror, the torque is transmitted from the mirror rod 200 to the rotating gear 210 through the connecting pin 310, causing it to mesh and rotate with the fixed gear 110. Thus, the rotating gear 210 and the mirror rod 200 form a rigid connection that rotates synchronously, avoiding relative slippage caused by vibration. It can be understood that the structure of the connecting pin 310 and the double-hole engagement simplifies the assembly steps. The operator only needs to align the holes and insert the pin to complete the installation, without the need for special tools or multiple people working together. Furthermore, prolonged use can lead to wear gaps due to metal-to-metal friction, causing the adjustment mechanism to loosen. Since replacing the lens rod 200 is costly, in some embodiments of this invention, a friction cylinder 220 is installed in the lens rod 200. The centerline of the friction cylinder 220 coincides with the centerline of the first connecting hole 21101, and the connecting pin 310 rotates with the inner circumferential surface of the friction cylinder 220. The friction cylinder 220 can be made of copper alloy or surface-plated steel. Its function is to reduce frictional wear between the connecting pin 310 and the lens rod 200 by forming a low-friction pair with the contact surface of the connecting pin 310. Therefore, by concentrating the vulnerable interface on a replaceable independent component, the cost of maintenance and replacement is reduced.

[0046] In some embodiments of this utility model, the connecting pin 310 is provided with a quick-installation structure to install the connecting pin 310 that passes through the rotating gear disk 210 and the lens rod 200, which can greatly simplify the installation process of installing the connecting pin 310 to the rotating gear disk 210 and the lens rod 200. Specifically, refer to Figure 1 and Figure 3The quick-installation structure includes a limiting part 311 at one end of the connecting pin 310 and a retaining ring 312 at the other end of the connecting pin 310, with the connecting part 211 positioned between the limiting part 311 and the retaining ring 312. During assembly, the connecting pin 310 is controlled by the limiting part 311 to pass through a predetermined distance between the first connecting hole 21101 of the rotating gear disk 210 and the second connecting hole 201 of the mirror rod 200, and then the retaining ring 312 is installed to the other end of the connecting pin 310. The limiting part 311 and the retaining ring 312 clamp the connecting part 211 of the rotating gear disk 210 from both sides, forming an axial constraint. For example, the retaining ring 312 can be quickly installed into the annular groove at the end of the connecting pin 310 using tools such as retaining ring pliers, without the need for bolt tightening or welding, significantly reducing assembly complexity. For example, in the scenario of assembling a truck rearview mirror, the operator only needs to use pliers with one hand to press the retaining ring 312 to complete the fixation, greatly improving assembly efficiency. In other embodiments, the quick-release structure consists of two retaining rings 312, located at both ends of the connecting pin 310. After the connecting pin 310 passes through the first connecting hole 21101 and the second connecting hole 201, retaining rings 312 are installed at both ends of the connecting pin 310 to axially limit the connecting pin 310 and prevent it from falling off. The retaining ring 312 is an annular elastic element with an opening, specifically a C-shaped retaining ring 312 or an E-shaped retaining ring 312. It elastically deforms and engages with the annular groove at the end of the connecting pin 310, forming a detachable axial limit.

[0047] Refer to Figure 1 and Figure 3In some embodiments of this utility model, multiple indexing grooves 1101 and multiple indexing blocks 212 are evenly distributed circumferentially between the rotating gear disk 210 and the fixed gear disk 110, and the indexing grooves 1101 and indexing blocks 212 mesh with each other in a one-to-one correspondence. For example, the indexing groove 1101 can be implemented as a V-shaped groove, a U-shaped groove, or a rectangular groove structure. Correspondingly, the indexing block 212 can be implemented as a V-shaped block, an arc-shaped block, or a rectangular block structure. Compared with the continuous sliding friction of traditional stepless adjustment, multi-position positioning is formed by the mechanical meshing of the tooth structure. The meshing of the indexing groove 1101 and the indexing block 212 provides a clear position resistance through tooth surface contact, so that the rearview mirror angle is precisely limited to a preset fixed position. For example, adjacent indexing grooves 1101 are 45° or 60° apart, providing a discrete position positioning reference for rearview mirror adjustment. For example, based on research into actual driver usage scenarios, adjacent indexing slots 1101 are spaced 30° apart on the circumferential direction of the fixed gear 110. This fixed 30° interval ensures comprehensive adjustment range coverage, allowing for a total adjustment angle of over 120°, while avoiding operational confusion caused by overly dense gears. The driver can move the rotating gear 210 one indexing slot 1101 with a single push of the rearview mirror, precisely switching to an adjacent 30° gear. Unlike stepless adjustment, there's no need to repeatedly test the angle, significantly reducing adjustment time, especially in scenarios requiring quick adjustments such as observing blind spots during lane changes or reversing into parking spaces. Furthermore, the axial force generated by the tooth surface slope during gear meshing enhances friction, achieving self-locking characteristics and improving vibration resistance, ensuring the rearview mirror angle remains stable under bumpy, accelerating, or braking conditions. Simultaneously, the geared design provides clear operational feedback, such as the "click" feel during gear shifting, improving adjustment efficiency and accuracy. In addition, the depth of the indexing groove 1101 and the height of the indexing block 212 are matched to ensure that sufficient positioning and holding force is provided during engagement, while allowing gear shifting when a manual rotational torque is applied.

[0048] Refer to Figure 1 and Figure 3In some embodiments of this utility model, a compression spring 320 is sleeved on the mirror rod 200, and the mirror rod 200 is provided with an annular portion 202. The annular portion 202 is located at the end of the compression spring 320 away from the rotating gear disk 210. The compression spring 320 and the annular portion 202 are in abutting engagement to drive the mirror rod 200 and the rotating gear disk 210 to move together. It can be understood that by using the annular portion 202 on the mirror rod 200 as the abutting fulcrum of the compression spring 320, elastic compensation for the meshing force between the rotating gear disk 210 and the fixed gear disk 110 is achieved. When the rearview mirror is not pushed, the compression spring 320 is in a naturally compressed state. One end of it abuts against the fixing surface of the mounting base 100, and the other end applies an axial thrust to the mirror rod 200 through the annular portion 202, thereby pushing the rotating gear disk 210 to press tightly against the fixed gear disk 110. This elastic preload can automatically compensate for the gaps caused by manufacturing tolerances or wear during the tooth meshing process, ensuring that the tooth surfaces are always tightly fitted and maintaining a stable locking force. Meanwhile, the elastic properties of the compression spring 320 allow the driver to push the rearview mirror with a small operating force, thereby compressing the compression spring 320 and causing the rotating gear 210 to disengage from the fixed gear 110. After the rearview mirror is released, the compression spring 320 can quickly rebound and resume engagement, optimizing the balance between the ease of adjustment and the stability of locking. In addition, the limiting design of the annular portion 202 ensures that the direction of the thrust of the compression spring 320 is precisely pointed to the meshing surface of the gear, avoiding local stress concentration or engagement failure caused by the misalignment of the compression spring 320. Optionally, the annular portion 202 is integrally fixed to the mirror rod 200. For this purpose, a receiving sleeve 2021 is provided between the annular portion 202 and the compression spring 320. The two ends of the receiving sleeve 2021 abut against the annular portion 202 and the compression spring 320 respectively, preventing the rigid compression spring 320 from directly contacting the annular portion 202 and damaging the annular portion 202, which would require replacing the entire mirror rod 200 and increase maintenance costs.

[0049] Furthermore, referring to Figure 1In some embodiments of this utility model, a dust cover 120 is provided on the side of the mounting base 100 facing the fixed gear disk 110. The rotating gear disk 210 and the fixed gear disk 110 are placed inside the dust cover 120, which can effectively prevent external dust, mud, and other contaminants from entering the meshing area. It is easy to understand that the internal space of the dust cover 120 matches the size of the rotating gear disk 210 and the fixed gear disk 110 to avoid interfering with the rotational movement of the rotating gear disk 210. During vehicle operation, road dust, rain splashes, or high-pressure water from car washes can easily adhere to the surface of the adjustment mechanism. If they directly contact the tooth meshing surface, it can lead to accelerated tooth wear, lubrication failure, or even jamming. The dust cover 120 can form a closed space through physical isolation, which not only protects the cleanliness of the rotating gear disk 210 and the fixed gear disk 110, but also slows down the oxidation and corrosion rate of metal parts, extending the service life of the adjustment mechanism. Optionally, the dust cover 120 is made of flexible materials such as rubber or silicone, which can absorb some vibration energy and further improve the user experience. In some embodiments, a sealing interface is formed between the opening edge of the dust cover 120 and the mounting base 100, for example, by means of a rubber sealing ring or a labyrinth structure.

[0050] The rearview mirror according to an embodiment of the present invention includes a rearview mirror adjustment mechanism with toothed positioning and pin fixing. Positioning is achieved through the meshing structure of the fixed toothed disc 110 and the rotating toothed disc 210. The pin fixing method, combined with the connecting pin 310 and the compression spring 320, effectively resists vibration interference during vehicle operation. Simultaneously, the quick-installation structure and modular design simplify the assembly process. The precise meshing of the indexing groove 1101 and the indexing block 212 ensures clear angle adjustment positions. It has the advantages of stable and reliable structure, convenient and efficient assembly, precise positioning, and excellent vibration resistance.

[0051] Other configurations and operations of the rearview mirror according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0052] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A rearview mirror adjustment mechanism with toothed positioning and pin fixing, characterized in that, include: Mounting bracket for fixing to the vehicle body, wherein the mounting bracket is equipped with a fixing gear plate; A mirror rod is used to fix to the rearview mirror and can rotate together with the rearview mirror. The mirror rod passes through the mounting base and the fixed gear plate. The mirror rod is fitted with a rotating gear plate, and the rotating gear plate meshes with the fixed gear plate to rotate. The connecting assembly includes a connecting pin and a compression spring. The connecting pin passes radially through the rotating gear and the mirror rod to drive the rotating gear, the mirror rod, and the rearview mirror to rotate together. One end of the compression spring abuts against the mounting base, and the other end abuts against the mirror rod to drive the rotating gear to mesh and fix with the fixed gear.

2. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 1, characterized in that: The rotating gear includes a connecting part, the peripheral wall of which is provided with a first connecting hole that extends radially through the connecting part, and the peripheral wall of the mirror rod is provided with a second connecting hole that extends through the connecting part. The second connecting hole is arranged correspondingly to the first connecting hole, and the connecting pin is placed in the first connecting hole and the second connecting hole.

3. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 2, characterized in that: A friction cylinder is installed in the mirror rod, the center line of the friction cylinder coincides with the center line of the first connecting hole, and the connecting pin is rotatably engaged with the inner circumferential surface of the friction cylinder.

4. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 2, characterized in that: The connecting pin is provided with a quick-release structure for installing the connecting pin that passes through the rotating gear and the mirror rod.

5. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 4, characterized in that: The quick-release structure includes a limiting part disposed at one end of the connecting pin and a retaining ring disposed at the other end of the connecting pin, with the connecting part positioned between the limiting part and the retaining ring.

6. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 1, characterized in that: The rotating gear disk and the fixed gear disk are evenly distributed circumferentially with multiple indexing grooves and multiple indexing blocks that mesh with each other, and the indexing grooves and the indexing blocks mesh with each other in a one-to-one correspondence.

7. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 6, characterized in that: In the circumferential direction of the fixed gear plate, adjacent indexing slots are 30° apart.

8. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 1, characterized in that: The compression spring is sleeved on the lens rod, which has an annular portion located at the end of the compression spring away from the rotating gear. The compression spring and the annular portion press against each other to drive the lens rod and the rotating gear together.

9. The rearview mirror adjustment mechanism with toothed positioning and pin fixing according to claim 1, characterized in that: The mounting base is provided with a dust cover on the side facing the fixed gear plate, and the rotating gear plate and the fixed gear plate are placed inside the dust cover.

10. A rearview mirror, characterized in that: The rearview mirror adjustment mechanism includes the toothed positioning and pin fixing as described in any one of claims 1 to 9.

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