A spring connecting locking mechanism of an automobile rearview mirror, an automobile rearview mirror and a locking method

Abstract

The application relates to the technical field of automobile rearview mirrors, in particular to a spring connecting and locking mechanism of an automobile rearview mirror, an automobile rearview mirror and a locking method, which comprises a connecting seat, an inner rearview mirror body arranged on the connecting seat, a ball joint mechanism connecting the connecting seat and the inner rearview mirror body, the ball joint mechanism comprising a ball joint assembly and an abutting assembly, the ball joint assembly can make the inner rearview mirror body be universally adjusted relative to the connecting seat, and the ball joint assembly can switch the connection state between the inner rearview mirror body and the connecting seat, a dismounting assembly arranged between the ball joint assembly and the inner rearview mirror body, the dismounting assembly comprising a connecting plate and a locking structure, the connecting plate and the locking structure are matched, the inner rearview mirror body can be connected with the ball joint assembly or disconnected from the ball joint assembly, and a polarizing assembly arranged in the inner rearview mirror body, the polarizing assembly can adjust the angle of reflected light of the inner rearview mirror body, and the driving safety is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive rearview mirror technology, specifically to an automotive rearview mirror spring connection locking mechanism, an automotive rearview mirror, and a locking method. Background Technology

[0002] The most basic function of a rearview mirror is to observe rear passengers, especially if there are children in the back. Rearview mirrors can also be used to judge distances, provide steering assistance, and observe vehicles behind during emergency braking.

[0003] Existing rearview mirrors are connected to the windshield via a ball joint. This ball joint method has a certain degree of damping, which allows the rearview mirror to maintain a predetermined angle after adjustment. However, this ball joint connection method also has certain drawbacks. For example, during repeated adjustments of the rearview mirror, the friction of the ball joint decreases, and during bumpy driving, the angle of the rearview mirror changes, causing the driver to lose the effective field of vision transmitted by the rearview mirror, increasing the danger during driving. Summary of the Invention

[0004] The purpose of this invention is to provide a car rearview mirror spring connection locking mechanism, a car rearview mirror and locking method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A car rearview mirror spring connection locking mechanism includes:

[0007] A connecting seat is connected to the windshield of a car, and an interior rearview mirror body is provided on the connecting seat;

[0008] Also includes:

[0009] A ball joint mechanism connects the connecting seat and the interior rearview mirror body. The ball joint mechanism includes a ball joint component and an abutment component. The ball joint component enables the interior rearview mirror body to be omnidirectionally adjusted relative to the connecting seat. The ball joint component can switch the connection state between the interior rearview mirror body and the connecting seat.

[0010] As a further aspect of the present invention: the ball joint assembly includes a spherical cavity formed on the connector, a spherical member is disposed in the spherical cavity, the circumferential diameter of the spherical member is equal to the circumferential diameter of the spherical cavity, and the center of the spherical member is located in the spherical cavity;

[0011] The end of the spherical component away from the connecting seat is connected to the interior rearview mirror body.

[0012] As a further embodiment of the present invention: the abutting component includes a first hysteresis groove and a second hysteresis groove disposed on the connecting seat, an abutting member adapted to the spherical part is slidably installed in the first hysteresis groove, and the abutting member is connected to a first slider slidably disposed in the second hysteresis groove via a first vertical shaft.

[0013] A guide groove is provided on the side wall of the first hysteresis groove, and the protrusions symmetrically arranged on both sides of the abutment can slide in the guide groove.

[0014] A spring is fitted on the first vertical shaft. One end of the spring is connected to the abutment and the other end is connected to the top wall of the first hysteresis groove.

[0015] The abutment assembly also includes a lifting kit connected to the first vertical shaft.

[0016] As a further embodiment of the present invention: the lifting kit includes a baffle plate disposed on the connecting seat, the baffle plate having a sliding groove, a second slider being slidably installed in the sliding groove, and a first pulley being rotatably installed on the second slider;

[0017] The lifting assembly also includes a first inclined groove and a horizontal groove disposed on the first slider. The first inclined groove and the horizontal groove are connected and form a guide groove, and the first pulley can roll in the guide groove.

[0018] A car rearview mirror, including the aforementioned spring-connected locking mechanism, further includes:

[0019] A disassembly assembly is disposed between the ball joint assembly and the interior rearview mirror body. The disassembly assembly includes a connecting plate and a locking structure. The connecting plate and the locking structure cooperate to connect or disconnect the interior rearview mirror body from the ball joint assembly.

[0020] A polarizing assembly is disposed within the interior rearview mirror body, and the polarizing assembly is capable of adjusting the angle of light reflected by the interior rearview mirror body.

[0021] As a further embodiment of the present invention: the locking structure includes a connecting frame connected to the interior rearview mirror body, the connecting frame having a fitting groove, the fitting groove being adapted to a connecting shaft disposed at the bottom of the connecting plate;

[0022] The locking structure also includes a connecting kit disposed between the connecting frame and the connecting plate.

[0023] As a further embodiment of the present invention: the connecting kit includes a locking member that slides through the connecting frame and a locking groove disposed at the end of the connecting plate away from the connecting shaft. When the connecting shaft is placed at the end of the locking groove and the locking member is inserted into the locking groove, the connecting plate can maintain a connection with the connecting frame.

[0024] The connection kit also includes an energy storage device disposed on the connection frame and connected to the locking element.

[0025] As a further embodiment of the present invention: the energy storage device includes a side mounting bracket disposed on the side of the connecting frame, a third slider is slidably mounted in the side mounting bracket, a second vertical shaft is disposed on the third slider and passes through the side mounting bracket, one end of the second vertical shaft away from the third slider is connected to the locking member, and a second spring is sleeved on the second vertical shaft, one end of the second spring is connected to the side wall of the side mounting bracket, and the other end is connected to the third slider.

[0026] As a further embodiment of the present invention: the polarizing assembly includes a polarizing mirror rotatably mounted inside the interior rearview mirror body, two connecting plates are symmetrically arranged on the polarizing mirror, and an inclined second inclined groove is provided on the connecting plate;

[0027] The polarizing assembly also includes a linear motion module disposed within the interior rearview mirror body, on which a second pulley is rotatably mounted, and the second pulley is capable of rolling within the second inclined groove.

[0028] A method for locking a car rearview mirror as described above includes the following steps:

[0029] Step 1: Connect the interior rearview mirror body to the ball joint assembly through the cooperation of the connecting plate and the locking structure;

[0030] Step 2: Drive the abutment component to move freely, so as to adjust the interior rearview mirror body to a predetermined angle;

[0031] Step 3: Drive the abutment assembly to reset, so that the interior rearview mirror body and the connecting seat maintain a predetermined angle;

[0032] Step 4: When drivers of different heights and builds are driving the vehicle, by following steps 2 and 3 above, the height of the rearview mirror can be matched to the height and build of the driver.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] By using a ball joint mechanism, the abutment part and the ball part can be separated when adjusting the angle of the interior rearview mirror body, thus preventing friction and wear between the two during the adjustment of the interior rearview mirror body, which would reduce the friction between them and avoid changes in the angle of the interior rearview mirror body due to vehicle bumps during driving, thereby improving driving safety.

[0035] The detachable components allow for quick installation and removal of the connecting plate from the connecting bracket. This reduces the difficulty of installing the rearview mirror body and makes it easier to replace the mirror body if it is damaged, thus reducing maintenance costs. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of one embodiment of a car rearview mirror.

[0037] Figure 2 This is a structural schematic diagram of another angle in one embodiment of a car rearview mirror.

[0038] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0039] Figure 4 This is an exploded view of the structure of the spring-connected locking mechanism for a car rearview mirror.

[0040] Figure 5 This is a schematic diagram of the structure of pulley number one and baffle in one embodiment of the spring connection locking mechanism for a car rearview mirror.

[0041] Figure 6 This is a schematic diagram of the disassembly assembly in one embodiment of a car rearview mirror.

[0042] Figure 7 This is a schematic diagram of the internal structure of the interior rearview mirror body in one embodiment of a car rearview mirror.

[0043] Figure 8 for Figure 7 Enlarged view of the structure at point B in the middle.

[0044] In the diagram: 1. Connecting seat; 2. Interior rearview mirror body; 3. Baffle; 4. No. 1 hysteresis groove; 5. No. 2 hysteresis groove; 6. Guide groove; 7. Spherical chamber; 8. Spherical component; 9. Abutment component; 10. Protrusion; 11. No. 1 vertical shaft; 12. No. 1 spring; 13. No. 1 slider; 14. No. 1 inclined groove; 15. Horizontal groove; 16. Slide groove; 17. No. 2 slider; 18. No. 1 pulley; 19. Connecting frame; 20. Fitting groove; 21. Side mounting frame; 22. Locking component; 23. No. 2 vertical shaft; 24. No. 2 spring; 25. No. 3 slider; 26. Connecting plate; 27. Connecting shaft; 28. Locking groove; 29. ​​Polarizing lens; 30. Connecting plate; 31. No. 2 inclined groove; 32. No. 2 pulley; 33. Linear motion module. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0047] Please see Figures 1 to 8 In this embodiment of the invention, a car rearview mirror spring connection locking mechanism includes: a connecting seat 1 and a ball joint mechanism, which allows the abutment 9 and the ball joint 8 to separate when the angle of the interior rearview mirror body 2 is adjusted, thereby preventing friction and wear between the two during the adjustment of the interior rearview mirror body 2, which would reduce the frictional force between them and prevent the angle of the interior rearview mirror body 2 from changing due to vehicle bumps during vehicle operation, thus improving driving safety.

[0048] Specifically, the connecting seat 1 is connected to the windshield of the car, and the connecting seat 1 is provided with an interior rearview mirror body 2;

[0049] The ball joint mechanism connects the connecting seat 1 and the interior rearview mirror body 2. The ball joint mechanism includes a ball joint component and an abutment component. The ball joint component enables the interior rearview mirror body 2 to be adjusted omnidirectionally relative to the connecting seat 1. The ball joint component can switch the connection state between the interior rearview mirror body 2 and the connecting seat 1.

[0050] The ball joint assembly includes a spherical cavity 7 formed on the connecting seat 1, and a spherical member 8 is disposed in the spherical cavity 7. The circumferential diameter of the spherical member 8 is equal to the circumferential diameter of the spherical cavity 7, and the center of the spherical member 8 is located in the spherical cavity 7.

[0051] The end of the spherical component 8 away from the connecting seat 1 is connected to the interior rearview mirror body 2;

[0052] The abutting assembly includes a first hysteresis groove 4 and a second hysteresis groove 5 disposed on the connecting seat 1. An abutting member 9 adapted to the spherical part 8 is slidably installed in the first hysteresis groove 4. The abutting member 9 is connected to a first slider 13 slidably disposed in the second hysteresis groove 5 via a first vertical shaft 11.

[0053] A guide groove 6 is provided on the side wall of the first hysteresis groove 4, and the protrusions 10 symmetrically arranged on both sides of the abutment 9 can slide in the guide groove 6.

[0054] A first spring 12 is fitted on the first vertical shaft 11. One end of the first spring 12 is connected to the abutment 9, and the other end is connected to the top wall of the first hysteresis groove 4.

[0055] The abutment assembly also includes a lifting kit connected to the first vertical shaft 11. The lifting kit includes a baffle 3 disposed on the connecting seat 1. A groove 16 is provided on the baffle 3. A second slider 17 is slidably installed in the groove 16. A first pulley 18 is rotatably installed on the second slider 17.

[0056] The lifting assembly also includes a first inclined groove 14 and a horizontal groove 15 disposed on the first slider 13. The first inclined groove 14 and the horizontal groove 15 are connected and form a guide groove. The first pulley 18 can roll in the guide groove.

[0057] In the initial state, the abutment 9 will exert a force on the spherical part 8 under the action of the first spring 12. Under the action of this force, the spherical part 8 can maintain a stable stationary state in the spherical cavity 7. The spherical surface of the spherical part 8 and the abutment 9 are both made of frosted surface to improve the interaction force when they abut. In this state, the rearview mirror body 2 can maintain a stable connection with the connecting seat 1, so that the angle of the rearview mirror body 2 is stable during driving, avoiding the angle of the rearview mirror body 2 from being deflected due to the bumps generated during vehicle driving. This allows the driver to accurately grasp the situation behind the vehicle through the rearview mirror, improving driving safety.

[0058] When the angle of the interior rearview mirror body 2 needs to be adjusted, the second slider 17 can be pulled to move along the length of the slide groove 16. At this time, the first pulley 18 will follow the second slider 17 to move in a straight line, so that the first pulley 18 can move along the first inclined groove 14 and the horizontal groove 15 in sequence. When the first pulley 18 moves in the first inclined groove 14, it will drive the first slider 13 to move upward by cooperating with the first inclined groove 14, so that the first spring 12 is compressed and the abutting member 9 is separated from the ball member 8. In this state, the angle of the interior rearview mirror body 2 can be adjusted. After the angle of the interior rearview mirror body 2 is adjusted, the second slider 17 is pushed to reset, so that the abutting member 9 and the ball member 8 can abut again, so that the interior rearview mirror body 2 can be stabilized again.

[0059] When the first pulley 18 moves into the horizontal groove 15, since the horizontal groove 15 is perpendicular to the movement direction of the first slider 13, the second slider 17 can be released during the adjustment process, so that the angle of the interior rearview mirror body 2 can be adjusted by both hands, reducing the difficulty of operation.

[0060] With the above settings, when adjusting the angle of the interior rearview mirror body 2, the abutment 9 and the spherical part 8 can be separated, thus preventing friction and wear between the two when adjusting the interior rearview mirror body 2, which would reduce the friction between them. This avoids changes in the angle of the interior rearview mirror body 2 due to vehicle bumps during driving, thereby improving driving safety.

[0061] Please see Figure 2 , Figure 3 , Figure 6 As an embodiment of the present invention, a car rearview mirror is also provided, including the aforementioned spring connection locking mechanism, and further including: a disassembly component and a polarizing component.

[0062] The disassembly assembly is disposed between the ball joint assembly and the interior rearview mirror body 2. The disassembly assembly includes a connecting plate 26 and a locking structure. The connecting plate 26 cooperates with the locking structure to enable the interior rearview mirror body 2 to be connected or disconnected from the ball joint assembly.

[0063] The locking structure includes a connecting frame 19 connected to the interior rearview mirror body 2, and a fitting groove 20 is formed on the connecting frame 19. The fitting groove 20 is adapted to the connecting shaft 27 provided at the bottom of the connecting plate 26.

[0064] The locking structure also includes a connecting kit disposed between the connecting frame 19 and the connecting plate 26. The connecting kit includes a locking member 22 that slides through the connecting frame 19 and a locking groove 28 disposed at the end of the connecting plate 26 away from the connecting shaft 27. When the connecting shaft 27 is placed at the end of the fitting groove 20 and the locking member 22 is inserted into the locking groove 28, the connecting plate 26 can maintain a connection with the connecting frame 19.

[0065] The connecting kit further includes an energy storage device disposed on the connecting frame 19 and connected to the locking member 22. The energy storage device includes a side mounting frame 21 disposed on the side of the connecting frame 19. A third slider 25 is slidably mounted in the side mounting frame 21. A second vertical shaft 23 is disposed on the third slider 25 and passes through the side mounting frame 21. One end of the second vertical shaft 23 away from the third slider 25 is connected to the locking member 22. A second spring 24 is sleeved on the second vertical shaft 23. One end of the second spring 24 is connected to the side wall of the side mounting frame 21, and the other end is connected to the third slider 25.

[0066] During installation, the connecting shaft 27 is placed in the fitting groove 20, and the connecting shaft 27 is moved along the length of the fitting groove 20 to the end of the fitting groove 20. Then, the connecting plate 26 is rotated with the connecting shaft 27 as the rotation center. When the connecting plate 26 rotates, it will abut against the locking member 22. As the connecting plate 26 continues to move, the arc-shaped surface of the end of the connecting plate 26 away from the connecting shaft 27 will drive the locking member 22 to move upward, compressing the second spring 24, until the locking groove 28 on the connecting plate 26 is aligned with the locking member 22. At this time, the second spring 24 releases its elastic potential energy, allowing the locking member 22 to be inserted into the locking groove 28. At this time, the lower part of the connecting plate 26 is fixed by the cooperation of the connecting shaft 27 and the fitting groove 20, and the lower part is fixed by the cooperation of the locking member 22 and the locking groove 28, so that the interior rearview mirror body 2 can be connected to the spherical member 8.

[0067] During disassembly, by pulling the locking member 22 to separate it from the locking groove 28, and then rotating the connecting plate 26, the upper part of the connecting plate 26 can be released from the locking, and then the connecting plate 26 can be taken out from the fitting groove 20, thereby achieving quick disassembly.

[0068] The above settings enable the connecting plate 26 to be quickly installed and removed from the connecting bracket 19. On the one hand, this reduces the installation difficulty of the interior rearview mirror body 2. On the other hand, the detachable connection method makes it easier to replace the interior rearview mirror body 2 when it is damaged, thus reducing maintenance costs.

[0069] Please see Figure 7 , Figure 8The polarizing component is disposed inside the interior rearview mirror body 2, and the polarizing component can adjust the angle of light reflected by the interior rearview mirror body 2;

[0070] The polarizing assembly includes a polarizing mirror 29 rotatably mounted inside the interior rearview mirror body 2. Two connecting plates 30 are symmetrically arranged on the polarizing mirror 29, and an inclined second inclined groove 31 is provided on the connecting plate 30.

[0071] The polarizing assembly also includes a linear motion module 33 disposed within the interior rearview mirror body 2. A second pulley 32 is rotatably mounted on the linear motion module 33, and the second pulley 32 is capable of rolling within the second inclined groove 31.

[0072] When in use, when a vehicle behind turns on its high beams, the linear motion module 33 will drive the second pulley 32 to move in a straight line. At the same time, the second pulley 32 will move within the second inclined groove 31, which can change the angle of the polarizing mirror 29, prevent strong light from shining directly into the driver's eyes, prevent dizziness, and improve driving safety.

[0073] A method for locking a car rearview mirror as described above includes the following steps:

[0074] Step 1: The interior rearview mirror body 2 is connected to the ball joint assembly through the cooperation of the connecting plate 26 and the locking structure;

[0075] Step 2: Drive the abutment component to move freely, so as to adjust the interior rearview mirror body 2 to a predetermined angle;

[0076] Step 3: Drive the abutment component to reset, so that the rearview mirror body 2 and the connecting seat 1 maintain a predetermined angle;

[0077] Step 4: When drivers of different heights and builds drive the vehicle, by following steps 2 and 3 above, the height of the rearview mirror body 2 can be matched with the height and build of the driver.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spring-connected locking mechanism for a car rearview mirror, comprising: A connecting seat (1) is connected to the windshield of a car, and an interior rearview mirror body (2) is provided on the connecting seat (1). Its characteristic is that it further includes: Ball joint mechanism, connecting the connecting seat (1) and the interior rearview mirror body (2), the ball joint mechanism includes a ball joint component and an abutment component, the ball joint component enables the interior rearview mirror body (2) to be universally adjusted relative to the connecting seat (1), the ball joint component can switch the connection state between the interior rearview mirror body (2) and the connecting seat (1); The ball joint assembly includes a spherical cavity (7) formed on the connector (1), and a spherical component (8) is disposed in the spherical cavity (7). The circumferential diameter of the spherical component (8) is equal to the circumferential diameter of the spherical cavity (7), and the center of the spherical component (8) is located in the spherical cavity (7). The end of the spherical component (8) away from the connecting seat (1) is connected to the interior rearview mirror body (2); The abutting assembly includes a first hysteresis groove (4) and a second hysteresis groove (5) disposed on the connecting seat (1). An abutting member (9) adapted to the spherical part (8) is slidably installed in the first hysteresis groove (4). The abutting member (9) is connected to a first slider (13) slidably disposed in the second hysteresis groove (5) via a first vertical shaft (11). A guide groove (6) is provided on the side wall of the first hysteresis groove (4), and the protrusions (10) symmetrically arranged on both sides of the abutment (9) can slide in the guide groove (6). A first spring (12) is sleeved on the first vertical shaft (11). One end of the first spring (12) is connected to the abutment (9), and the other end is connected to the top wall of the first hysteresis groove (4). The abutment assembly also includes a lifting kit connected to the first vertical shaft (11); The lifting kit includes a baffle (3) provided on the connecting seat (1), a slide groove (16) is provided on the baffle (3), a second slider (17) is slidably installed in the slide groove (16), and a first pulley (18) is rotatably installed on the second slider (17). The lifting kit also includes a first inclined groove (14) and a horizontal groove (15) disposed on the first slider (13). The first inclined groove (14) and the horizontal groove (15) are connected, and the first inclined groove (14) and the horizontal groove (15) form a guide groove. The first pulley (18) can roll in the guide groove. In the initial state, the abutment (9) has a force acting on the spherical part (8) under the action of the first spring (12), which enables the spherical part (8) to remain stable and stationary in the spherical cavity (7); when it is necessary to adjust the angle of the interior rearview mirror body (2), the second slider (17) can be pulled to move along the length direction of the slide groove (16), so that the first pulley (18) can move along the first inclined groove (14) and the horizontal groove (15) in sequence, and through cooperation with the first inclined groove (14), drive the first slider (13) to move upward, so that the first spring (12) is compressed, and at the same time, the abutment (9) and the spherical part (8) are separated.

2. A car rearview mirror, characterized in that, Including the spring-connected locking mechanism as described in claim 1, it further includes: The disassembly assembly is located between the ball joint assembly and the interior rearview mirror body (2). The disassembly assembly includes a connecting plate (26) and a locking structure. The connecting plate (26) cooperates with the locking structure to enable the interior rearview mirror body (2) to be connected or disconnected from the ball joint assembly. A polarizing component is disposed inside the interior rearview mirror body (2), and the polarizing component can adjust the angle of light reflected by the interior rearview mirror body (2).

3. A car rearview mirror according to claim 2, characterized in that, The locking structure includes a connecting frame (19) connected to the interior rearview mirror body (2), and a fitting groove (20) is formed on the connecting frame (19). The fitting groove (20) is adapted to the connecting shaft (27) provided at the bottom of the connecting plate (26). The locking structure also includes a connecting kit disposed between the connecting frame (19) and the connecting plate (26).

4. A car rearview mirror according to claim 3, characterized in that, The connecting kit includes a locking member (22) that slides through the connecting frame (19) and a locking groove (28) located at the end of the connecting plate (26) away from the connecting shaft (27). When the connecting shaft (27) is placed at the end of the fitting groove (20) and the locking member (22) is inserted into the locking groove (28), the connecting plate (26) can maintain a connection with the connecting frame (19). The connection kit also includes an energy storage device disposed on the connection frame (19) and connected to the locking member (22).

5. A car rearview mirror according to claim 4, characterized in that, The energy storage device includes a side mounting bracket (21) disposed on the side of the connecting frame (19). A third slider (25) is slidably mounted inside the side mounting bracket (21). A second vertical shaft (23) is disposed on the third slider (25) and passes through the side mounting bracket (21). One end of the second vertical shaft (23) away from the third slider (25) is connected to the locking member (22). A second spring (24) is sleeved on the second vertical shaft (23). One end of the second spring (24) is connected to the side wall of the side mounting bracket (21), and the other end is connected to the third slider (25).

6. A car rearview mirror according to claim 2, characterized in that, The polarizing assembly includes a polarizing mirror (29) rotatably mounted inside the inner rearview mirror body (2). Two connecting plates (30) are symmetrically arranged on the polarizing mirror (29), and an inclined second inclined groove (31) is provided on the connecting plate (30). The polarizing assembly also includes a linear motion module (33) disposed in the inner rearview mirror body (2), on which a second pulley (32) is rotatably mounted, and the second pulley (32) can roll in the second inclined groove (31).

7. A locking method for a car rearview mirror as described in claim 2, characterized in that, Includes the following steps: Step 1: The interior rearview mirror body (2) is connected to the ball joint assembly through the cooperation of the connecting plate (26) and the locking structure; Step 2: Drive the abutment component to move so that the ball joint component can move freely to adjust the interior rearview mirror body (2) to a predetermined angle; Step 3: Drive the abutment assembly to reset, so that the interior rearview mirror body (2) and the connecting seat (1) remain at a predetermined angle; Step 4: When drivers of different heights and builds drive the vehicle, by following steps 2 and 3 above, the height of the rearview mirror body (2) can be matched with the height and build of the driver.

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