Positioning structure for vehicle outside rear-view mirror folding device

Abstract

The utility model relates to the technical field of automobile parts, in particular to a positioning structure for a vehicle outside rear-view mirror folding device, which comprises a positioning ring and a positioning elastic piece, and a positioning ring boss is arranged at the lower end of the positioning ring; the positioning elastic piece is of an elastic sheet-shaped structure, one end of the elastic sheet-shaped structure is integrally formed at the upper end of the positioning ring, and an acute angle structure is formed between the elastic sheet-shaped structure and the upper end face of the positioning ring. According to the positioning structure for the vehicle outside rear-view mirror folding device, positioning matching can be achieved through the positioning ring boss and the transmission piece boss on the transmission piece on the vehicle outside rear-view mirror folding device, and therefore the accuracy of a vehicle outside rear-view mirror in the electric folding process is guaranteed. Meanwhile, the whole positioning structure can be installed in the upper space of a transmission piece, no extra space is occupied, and the size of a shell of the vehicle outside rear-view mirror folding device can be reduced.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, specifically a positioning structure for a vehicle exterior rearview mirror folding device. Background Technology

[0002] The folding mechanism of vehicle exterior rearview mirrors is typically rotatably mounted between a mirror base plate and a mirror bracket fixed to the vehicle to achieve the folding function of the exterior rearview mirror. To reduce the frictional resistance between the mirror base plate and the mirror bracket during electric folding, a certain gap is often maintained in the design of the rearview mirror. However, the problem is that the gap means that the lower end of the mirror bracket lacks the support of the mirror base plate. This means that the mirror bracket is entirely supported by the folding mounting shaft and pressed down by a spring fitted onto the mounting shaft. This results in poor vibration resistance, making it prone to shaking during driving, especially at high speeds or on bumpy roads. In addition, the gap generates significant wind noise during high-speed driving.

[0003] To ensure the stable operation of electrically folding exterior rearview mirrors, the rotation position of the mirrors is typically positioned when rotating them from the folded to the unfolded state to ensure the accuracy of the unfolded angle. For example, Chinese invention patent CN108297798B discloses a positioning ring. One end of the positioning ring is rotatably connected to a base, and an elastic element for elastic reset is provided between the positioning ring and the base. An inwardly extending mounting platform is provided on the inner wall of one side of the base, and one end of the positioning ring is rotatably fitted onto a vertically arranged shaft on the mounting platform. The elastic element is a spring sheet integrally formed with the positioning ring, with one side of the spring sheet abutting against the inner wall of the base, and the other side of the spring sheet having a gap with the positioning ring that allows for elastic displacement.

[0004] To avoid conflicts with the aforementioned positioning structure, how to provide a novel positioning structure for a vehicle exterior rearview mirror folding device is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One object of this application is to provide a novel positioning structure for a vehicle exterior rearview mirror folding device that does not occupy extra space.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a positioning structure for a vehicle exterior rearview mirror folding device, including a positioning ring and a positioning elastic element, wherein the lower end of the positioning ring is provided with a positioning ring boss; the positioning elastic element is an elastic sheet-like structure, one end of the elastic sheet-like structure is integrally formed on the upper end of the positioning ring, and an acute angle structure is formed between the elastic sheet-like structure and the upper end face of the positioning ring.

[0007] Preferably, a cylinder protrudes from one end of the elastic sheet structure away from the positioning ring.

[0008] Preferably, a positioning ring inclined surface is provided between one side of the lower end of the positioning ring boss and the lower end face of the positioning ring.

[0009] Preferably, the number of positioning ring protrusions is at least two, and each positioning ring protrusion is arranged at equal intervals along the circumference of the positioning ring.

[0010] Preferably, the number of positioning ring bosses is three.

[0011] Preferably, the number of elastic sheet-like structures is at least two, and each of the elastic sheet-like structures is arranged at equal intervals along the circumference of the positioning ring.

[0012] Preferably, a buffer portion is formed between the elastic sheet structure and the positioning ring to prevent the elastic sheet structure from breaking.

[0013] Preferably, the upper end of the positioning ring is provided with an insert block.

[0014] Preferably, the number of the inserts is at least two, and each insert is arranged at equal intervals along the circumference of the positioning ring.

[0015] Preferably, the number of elastic sheet structures is at least two, each elastic sheet structure is arranged at equal intervals along the circumference of the positioning ring, and each insert block and each elastic sheet structure are adapted to be arranged alternately.

[0016] Compared with the prior art, the advantages of this application are as follows: the positioning structure for the vehicle exterior rearview mirror folding device can achieve positioning cooperation between the positioning ring boss and the transmission component boss on the transmission component of the vehicle exterior rearview mirror folding device, thereby ensuring the accuracy of the vehicle exterior rearview mirror during the electric folding process. At the same time, the positioning structure can be installed in the upper space of the transmission component without occupying additional space, which helps to reduce the volume of the housing of the vehicle exterior rearview mirror folding device. Attached Figure Description

[0017] Figure 1 A perspective view of a folding device for a vehicle vision device provided in this application.

[0018] Figure 2 Provided for this application Figure 1 Exploded view of the folding mechanism of the vehicle vision device.

[0019] Figure 3 Provided for this application Figure 2 Enlarged view of the gear body.

[0020] Figure 4Provided for this application Figure 2 Enlarged view of the middle part of the structure.

[0021] Figure 5 Provided for this application Figure 1 Working status of the folding device of the vehicle vision device Figure 1 .

[0022] Figure 6 Provided for this application Figure 1 Working status of the folding device of the vehicle vision device Figure 2 .

[0023] Figure 7 Provided for this application Figure 6 Front view of each structure.

[0024] Figure 8 Provided for this application Figure 1 Working status of the folding device of the vehicle vision device Figure 3 .

[0025] Figure 9 The working state of the gear body and drive unit provided in this application Figure 1 .

[0026] Figure 10 The working state of the gear body and drive unit provided in this application Figure 2 .

[0027] Figure 11 This is a schematic diagram illustrating the working principle of a positioning structure provided in this application.

[0028] Figure 12 An exploded view of another transmission component provided in this application.

[0029] Figure 13 A perspective view of another positioning structure provided for this application.

[0030] Figure 14 Provided for this application Figure 13 Another perspective view of the positioning structure.

[0031] Figure 15 Provided for this application Figure 14 Installation diagram of the positioning structure.

[0032] Figure 16 Provided for this application Figure 13 Mid-positioning structure and Figure 12 A schematic diagram illustrating the working principle between the transmission components.

[0033] In the diagram: 1. Gear body; 11. Guide post; 12. Locking protrusion; 2. Transmission component; 20. Transmission component split; 21. Guide groove; 211. First horizontal section; 212. Inclined section; 22. Locking groove; 23. Transmission component boss; 24. Transmission component inclined surface; 25. Positioning slot; 3. Positioning structure; 31. Positioning ring; 311. Positioning ring boss; 312. Positioning ring inclined surface; 313. Insert block; 32. Positioning elastic element; 321. Cylinder; 322. Buffer part; 33. Clamping arm; 34. Elastic arm; 4. Housing; 41. Housing body; 42. Slot; 5. Mounting shaft; 6. Drive unit; 61. Motor; 62. Transmission mechanism; 63. Transmission worm gear. Detailed Implementation

[0034] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] In the description of this application, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this application 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. They should not be construed as limiting the specific scope of protection of this application. The terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "comprising" and "having," and any variations thereof, in the specification and claims of this application, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0036] like Figures 1 to 10 As shown, this embodiment provides a folding device for a vehicle vision device, including a transmission gear structure, a transmission component 2, a housing 4 mounted on a mirror bracket, a mounting shaft 5 mounted on a mirror base plate, and a drive unit 6 mounted on the housing 4. Figure 3 As shown, the transmission gear structure includes a gear body 1, with guide posts 11 radially arranged on the inner ring surface of the gear body 1. The gear body 1 meshes with the drive unit 6 (e.g., Figure 9 As shown). Figure 4As shown, the transmission component 2 is coaxially mounted on the mounting shaft 5, and the gear body 1 is coaxially sleeved on the outside of the transmission component 2 (e.g., Figure 6 As shown, a guide groove 21 is provided circumferentially on the outer wall of the transmission component 2 corresponding to the position of the guide post 11. The guide groove 21 includes a first horizontal section 211 and an inclined section 212, one end of which is smoothly connected to the first horizontal section 211. The guide post 11 is slidably engaged with the guide groove 21. When the guide post 11 is slidably engaged with the first horizontal section 211, it is used to keep the mirror bracket in an unfolded state. When the drive unit 6 drives the gear body 1 to rotate, thereby driving the guide post 11 to slide from the first horizontal section 211 to the inclined section 212 and continue to slide, it is used to lift the transmission gear structure, the drive unit 6, and the housing 4. When the guide post 11 slides to the end of the inclined section 212 and continues to be driven, it is used to fold the mirror bracket. It should be understood that the positions of the guide post 11 and the guide groove 21 can be interchanged, that is, the guide post 11 is set on the outer wall of the transmission component 2, and the guide groove 21 is set on the inner ring surface of the gear body 1.

[0037] Working principle: When the folding device of this vehicle vision device is in use, with the mirror bracket in the unfolded state (i.e., the exterior rearview mirror is normally open), the guide post 11 is located in the first horizontal section 211 of the guide groove 21 (e.g., Figure 5 As shown), at this time, there is no gap between the mirror bracket and the mirror base plate, allowing the mirror base plate to support the mirror bracket and prevent the exterior rearview mirror from wobbling; eliminating the gap also reduces wind noise. When it is necessary to fold the exterior rearview mirror, the drive unit 6 drives the gear body 1, thereby driving the guide column 11 to rotate (to... Figure 9 For example, the drive unit 6 drives the gear body 1 to rotate counterclockwise. At this time, the guide post 11 slides within the first horizontal section 211. The guide post 11 does not generate a force component in the vertical direction, and the relatively sliding parts are lubricated by the lubricating medium. Therefore, the resistance experienced by the guide post 11 within the first horizontal section 211 is very small. Thus, at the moment of startup, the drive unit 6 only drives the gear body 1 to rotate, resulting in a small starting load, which helps reduce wear, extend service life, and reduce starting noise. Figure 6As shown, when the guide post 11 slides from the first horizontal section 211 into the inclined section 212 and continues to drive, the guide post 11 exerts downward pressure on the inclined section 212 in the vertical direction. At this time, since the transmission component 2, the mounting shaft 5, and the mirror base plate are equivalent to a stationary whole, according to the interaction of forces, that is, the inclined section 212 generates an upward reaction force on the guide post 11, thereby driving the overall structure composed of the gear body 1, the drive unit 6, the housing 4, and the mirror bracket to rise upward, thus creating a gap between the mirror bracket and the mirror base plate. In this process, since the gear body 1 and the drive unit 6 are equivalent to a whole, that is, the gear body 1 does not generate relative displacement with the drive unit 6 along its axial direction, the noise between the drive unit 6 and the gear body 1 can be reduced, and the axial dimension of the gear body 1 does not need to reserve extra margin, which is beneficial to reduce the axial dimension of the transmission gear structure; in addition, the interaction force between the guide post 11 and the inclined section 212 only needs to overcome the gravity of the gear body 1, the housing 4, the drive unit 6, and the mirror bracket, and does not need to overcome the spring force as in the prior art, further reducing the starting load of the drive unit 6. like Figures 7 to 8 As shown, when the guide post 11 slides to the end of the inclined section 212 (i.e., the end of the inclined section 212 away from the first horizontal section 211), the gear body 1, housing 4, drive unit 6, and mirror bracket are raised to the upper limit (i.e., the gap between the mirror bracket and the mirror base plate reaches its maximum). At this time, since the transmission component 2 cannot be pushed by the guide post 11, that is, the transmission component 2 blocks the gear body 1 from continuing to rotate, but the drive unit 6 is still driving. According to the relative motion, that is, the overall structure composed of the drive unit 6, housing 4, and mirror bracket will rotate clockwise around the gear body 1 (e.g., ...). Figure 14 As shown in the diagram, this allows the mirror bracket (i.e., the exterior rearview mirror) to fold. When the drive unit 6 is activated in reverse, the exterior rearview mirror can be unfolded.

[0038] Because the internal space of the exterior rearview mirror is limited, the size of the guide post 11 cannot be designed to be very large, and the guide post 11 and the gear body 1 are generally injection molded parts; furthermore, because during the retraction process of the exterior rearview mirror, the power transmission between the guide post 11 and the tilting section 212 is entirely applied to the guide post 11, the guide post 11 bears a heavy load and is prone to breakage over time. To solve this problem, in this embodiment, such as Figure 3 As shown, the upper end of the gear body 1 is provided with a locking protrusion 12; as Figure 5 As shown, the outer wall of the transmission component 2 is provided with a locking groove 22; as Figure 7 As shown, when the guide post 11 slides to contact the end of the inclined section 212 or before contact, the locking protrusion 12 engages with the locking groove 22 to restrict relative rotation between the gear body 1 and the transmission component 2; at this time, the locking protrusion 12 and the locking groove 22 can partially or completely offset the force on the guide post 11, thereby reducing the load on the guide post 11 and preventing the guide post 11 from breaking. Figure 5 As shown, when the guide post 11 slides within the first horizontal section 211, there is no contact between the locking protrusion 12 and the locking groove 22.

[0039] It should be understood that, since the actual movement trajectory of the locking protrusion 12 during the lifting process is spiral upward, taking the trapezoidal locking protrusion 12 and locking groove 22 as an example, the size of the locking groove 22 needs to be slightly larger than the size of the locking protrusion 12, so that when the locking protrusion 12 and the locking groove 22 interact, there is still a certain amount of space between the locking protrusion 12 and the locking groove 22 (e.g., Figure 7 As shown), under the effect of this allowance space, when the exterior rearview mirror goes from folded to unfolded, that is, when the drive unit 6 drives the gear body 1 to rotate in the opposite direction, the locking protrusion 12 and the locking groove 22 will not immediately achieve reverse engagement. It is necessary to wait for the gear body 1 to transmit a certain angle to offset the allowance space before the locking protrusion 12 and the locking groove 22 can achieve reverse engagement and limit. Only then will the exterior rearview mirror unfold. Therefore, under the effect of the allowance space, the reverse starting load when the drive unit 6 drives the exterior rearview mirror to unfold can also be reduced, thereby reducing starting noise and wear, and extending service life.

[0040] This application does not limit the specific structure of the locking protrusion 12 and the locking groove 22. The locking protrusion 12 is preferably a trapezoidal or triangular protrusion structure, and the locking groove 22 is preferably a trapezoidal or triangular groove structure (of course, the positions of the locking protrusion 12 and the locking groove 22 can be interchanged).

[0041] It should be understood that this application does not limit the number of guide posts 11 and guide grooves 21, but in order to improve the uniformity of force distribution, the number of guide posts 11 and guide grooves 21 can be set to multiple, and multiple guide posts 11 and multiple guide grooves 21 are arranged at equal intervals along the circumference of the mounting shaft 5.

[0042] In this embodiment, as Figure 2 As shown, the housing 4 comprises at least two housing bodies 41 joined and fixed together, wherein a limiting area for limiting the gear body 1 is formed between the at least two housing bodies 41; the clamping action between the at least two housing bodies 41 facilitates the installation of the gear body 1, ensuring that the gear body 1 can only rotate relative to the housing 4. It should be understood that this application does not limit the specific structure of the housing 4 and the housing bodies 41, and can be adjusted and designed according to actual needs.

[0043] In order to position the exterior rearview mirror to the unfolded position, the folding device of the vehicle vision device also includes a positioning structure 3. Only two positioning structures 3 are provided below for reference, see Embodiment 1 and Embodiment 2 for details.

[0044] Example 1

[0045] like Figure 11 As shown, the upper outer side of the transmission component 2 is provided with a positioning slot 25; the folding device of the vehicle vision device also includes a positioning structure 3, which includes a locking arm 33 rotatably connected to the housing 4. An elastic arm 34 is integrally formed on the locking arm 33, and the elastic arm 34 abuts against the inner wall of the housing 4, thereby causing the locking arm 33 to rotate to abut against the outer wall of the transmission component 2; when the exterior rearview mirror rotates from the folded position to the unfolded position, the locking arm 33 just abuts against the positioning slot 25, thereby restricting the relative rotation between the housing 4 and the transmission component 2. Figure 15 For example, when the exterior rearview mirror is in the unfolded position, the housing 4 and the mirror bracket cannot continue to rotate counterclockwise around the transmission component 2. However, when the exterior rearview mirror's internal fit is disordered due to external collisions or human folding, the cooperation between the locking arm 33 and the positioning slot 25 allows the mirror bracket and housing 4 to rotate 360 ​​degrees clockwise around the transmission component 2 for adjustment until the folding device inside the exterior rearview mirror is restored to use. Its principle is similar to a ratchet mechanism.

[0046] Example 2

[0047] like Figures 12 to 16As shown, the upper end of the transmission component 2 is provided with a transmission component boss 23; the folding device of the vehicle vision device also includes a positioning structure 3, which includes a positioning ring 31 and a positioning elastic element 32; the positioning ring 31 is slidably mounted on the housing 4, and the lower end of the positioning ring 31 is provided with a positioning ring boss 311; the positioning elastic element 32 is disposed on the housing 4 or the positioning ring 31, and is used to make the transmission component boss 23 contact the lower end face of the positioning ring 31 or to make the positioning ring boss 311 contact the upper end face of the transmission component 2; when the mirror bracket is rotated to the unfolded state, the transmission component boss 23 just abuts against the positioning ring boss 311, thereby restricting the relative rotation between the positioning ring 31 (i.e., the housing 4) and the transmission component 2. A drive component inclined surface 24 is provided between the upper end of the drive component boss 23 away from the positioning ring boss 311 and the upper end face of the drive component 2; a positioning ring inclined surface 312 is provided between the lower end of the positioning ring boss 311 away from the drive component boss 23 and the lower end face of the positioning ring 31. When relative sliding occurs between the drive component inclined surface 24 and the positioning ring inclined surface 312, it is used to make the positioning ring 31 slide upward, so that the positioning ring boss 311 crosses the drive component boss 23, thereby also realizing 360-degree reverse rotation adjustment. Among them, the positioning ring 31 has a ring structure, which facilitates reasonable avoidance of structures such as the installation shaft 5. The number of positioning ring bosses 311 is at least two, preferably three, and the bosses of each positioning ring 31 are arranged at equal intervals along the circumference of the positioning ring 31. The number and position of the drive component bosses 23 are matched with the positioning ring bosses 311; when there are multiple, the force is more even and avoids unilateral force. The positioning elastic element 32 is an elastic sheet structure, with one end integrally formed into the positioning ring 31, and an acute angle structure formed between the elastic sheet structure and the upper end face of the positioning ring 31. This integral structure of the positioning elastic element 32 and the positioning ring 31 is simpler and easier to install. The elastic sheet structure and the positioning ring 31 are integrally injection molded, resulting in lower cost. A cylinder 321 protrudes from the end of the elastic sheet structure away from the positioning ring 31, and the cylinder 321 is used to reduce the relative sliding resistance between it and the housing 4. There are at least two elastic sheet structures, and each elastic sheet structure is arranged at equal intervals along the circumference of the positioning ring 31; increasing the number of elastic sheet structures can improve both the elastic force and the uniformity of the elastic force, avoiding unilateral force. A buffer portion 322 is formed between the elastic sheet structure and the positioning ring 31 to prevent the elastic sheet structure from breaking. Since the elastic sheet structure and the positioning ring 31 are integrally formed, the buffer portion 322 can prevent breakage due to stress concentration between the elastic sheet structure and the positioning ring 31. The buffer portion 322 can be formed by gradually decreasing the thickness at the junction between the elastic sheet structure and the positioning ring 31 towards the middle, and the elastic sheet structure and the positioning ring 31 have a rounded corner transition. To facilitate the sliding installation between the positioning ring 31 and the housing 4, the upper end of the positioning ring 31 is provided with a plug 313, and the housing 4 is provided with a slot 42. The plug 313 is slidably connected to the slot 42.The number of inserts 313 is preferably at least two, and each insert 313 is arranged at equal intervals along the circumference of the positioning ring 31; each insert 313 and each elastic sheet structure are preferably arranged alternately.

[0048] In this embodiment, as Figure 12 As shown, the guide groove 21 also includes a second horizontal section 213, one end of which is smoothly connected to the end of the inclined section 212 away from the first horizontal section 211. When the guide post 11 slides to the end of the inclined section 212, without the action of the locking protrusion 12 and the locking groove 22, it is necessary to wait for the guide post 11 to slide to the end of the second horizontal section 213 (i.e., the end of the second horizontal section 213 away from the inclined section 212) and continue to drive before it is used to fold the mirror bracket. If the locking protrusion 12 and the locking groove 22 are provided, it is necessary to ensure that when the guide post 11 slides to contact the end of the second horizontal section 213 or before contact, the locking protrusion 12 and the locking groove 22 achieve abutment engagement to partially or completely offset the force on the guide post 11. When the exterior rearview mirror changes from the folded state to the unfolded state, the drive unit 6 drives in the opposite direction. At the moment of reverse start-up, since the guide post 11 slides within the second horizontal segment 213 first, the sliding resistance of the guide post 11 is also very small, that is, the load on the drive unit 6 is also relatively small at the moment of start-up.

[0049] It is understood that the specific structure of the drive unit 6 is existing technology. For example, the drive unit 6 includes a motor 61, a transmission mechanism 62 and a transmission worm 63. The transmission worm 63 is rotatably mounted on the housing 4 and meshes with the gear body 1. The motor 61 is mounted on the housing 4, and the output shaft of the motor 61 drives the worm to rotate through the transmission mechanism 62. The transmission mechanism 62 is preferably a worm gear mechanism.

[0050] This application does not limit the method by which the guide post 11 slides into the guide groove 21, for example, as Figure 6 As shown, when the guide post 11 is located on the inner ring surface of the gear body 1, the transmission component 2 includes at least two transmission component parts 20 spliced ​​together; when the transmission component parts 20 are separated, they are used to allow the gear body 1 to be fitted onto the outside of the transmission component 2 and to create a notch in the guide groove 21 for the guide post 11 to enter. This split-type transmission component 2 enables the assembly between the transmission component 2 and the gear body 1.

[0051] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed application.

Claims

1. A positioning structure for a vehicle exterior rearview mirror folding device, characterized in that, The positioning ring is provided with a positioning ring boss at the lower end; the elastic sheet structure is integrally formed at the upper end of the positioning ring; and an acute angle structure is formed between the elastic sheet structure and the upper end surface of the positioning ring.

2. The positioning structure for a vehicle mirror folding apparatus according to claim 1, wherein A cylinder is formed at the end of the elastic sheet structure away from the positioning ring.

3. The positioning structure for a vehicle mirror folding apparatus according to claim 1, wherein An inclined surface is arranged between the lower end surface of the positioning ring and one side of the lower end of the positioning ring boss.

4. The positioning structure for a vehicle mirror folding apparatus according to claim 1, wherein The number of the positioning ring bosses is at least two, and each positioning ring boss is arranged equidistantly along the circumference of the positioning ring.

5. The positioning structure for a vehicle mirror folding apparatus according to claim 4, wherein The number of the positioning ring bosses is three.

6. The positioning structure for a vehicle mirror folding apparatus according to claim 1, wherein The number of the elastic sheet structures is at least two, and each elastic sheet structure is arranged equidistantly along the circumference of the positioning ring.

7. The positioning structure for a vehicle mirror folding apparatus according to claim 1, wherein A buffer part is formed between the elastic sheet structure and the positioning ring to prevent the elastic sheet structure from breaking.

8. The positioning structure for a vehicle mirror folding apparatus according to claim 1, wherein The upper end of the positioning ring is provided with an insertion block.

9. The positioning structure for a vehicle mirror folding apparatus according to claim 8, wherein The number of the insertion blocks is at least two, and each insertion block is arranged equidistantly along the circumference of the positioning ring.

10. The positioning structure for a vehicle mirror folding apparatus according to claim 9, wherein The number of the elastic sheet structures is at least two, and each elastic sheet structure is arranged equidistantly along the circumference of the positioning ring, and each insertion block and each elastic sheet structure are alternately arranged.

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