Automobile rearview mirror assembly device and method

Abstract

The present application relates to the technical field of rearview mirror assembly, in particular to a kind of automobile rearview mirror assembly device and method, including mechanical arm, mounting bracket, lifting drive module, differential deflection mechanism, offset push rod, transmission arm assembly, touch pressure rod and receiving die, receiving die is used to be connected and limit for rearview mirror shell, the middle position of mounting bracket is fixedly connected with connecting rod, the bottom end of connecting rod is fixedly connected with fixed plate.In the present application, when adjusting tray is inclined, two touch pressure rods are extruded to move up differently, and then the touch pressure rod drives two offset push rods to move up and down through differential deflection mechanism, so that the inclination angle of mirror surface is consistent with the inclination angle of tray, the mirror surface and tray are conveniently parallelly connected, and the internal gear or structure of adjusting tray is damaged due to the uneven contact when the mirror surface and tray are extruded and connected.

Description

Technical Field

[0001] This invention relates to the field of rearview mirror assembly technology, specifically to a vehicle rearview mirror assembly device and method. Background Technology

[0002] Existing car rearview mirrors not only allow for retraction and adjustment of the mirror itself, but also for the mirror lens. The mirror housing contains a drive assembly. Typically, the lens is engaged with a tray on the drive assembly via a retaining ring (composed of multiple ring-shaped connectors) on the back. The drive assembly adjusts the lens angle slightly by rotating the tray, compensating for the limited angle adjustment of the mirror housing and allowing for more flexible adjustment of the mirror's field of vision. However, existing assembly devices often directly press the lens against the retaining ring during assembly. Because the drive assembly undergoes a power-on test in the preceding process to check the tray's operation, and the tray fails to reset after the test, the tray is tilted after the drive assembly is installed on the housing. If the mirror is then held in a single position against the tray, the resulting pressure on the lens leads to uneven contact between the lens and the tray, potentially forcing the tray to deflect and damaging the worm gear within the drive assembly. Summary of the Invention

[0003] The purpose of this invention is to provide an automotive rearview mirror assembly device and method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A vehicle rearview mirror assembly device and method, comprising:

[0006] The receiving mold is used to snap and limit the position of the rearview mirror housing.

[0007] The mounting bracket has a connecting rod fixedly connected in the middle, a fixing plate fixedly connected to the bottom end of the connecting rod, a fixing tube fixedly connected to the bottom end of the fixing plate, and a suction cup fixedly connected to the bottom end of the fixing tube.

[0008] There are two differential deflection mechanisms, which are respectively installed at both ends of the fixed plate.

[0009] There are four transmission arm assemblies. The multiple transmission arm assemblies are grouped in pairs, and the two groups of transmission arm assemblies correspond to two differential deflection mechanisms respectively. The bottom ends of the two transmission arm assemblies located on the same side are fixedly connected with a pressure rod.

[0010] There are two lifting drive modules, each corresponding to one of the two sets of transmission arm assemblies. The lifting drive modules are fixedly mounted on the mounting frame and are used to drive the corresponding transmission arm assemblies to deflect.

[0011] There are two offset push rods, which are slidably installed at both ends of the side bracket. The offset push rods are used to tilt the mirror surface.

[0012] A robotic arm is used for fixed installation between itself and the mounting frame, and the robotic arm is used to move the mounting frame.

[0013] Furthermore, the transmission arm assembly also includes an arm rod, the top end of which is connected to the top end of the differential deflection mechanism. An outer tube is fixedly connected to the bottom end of the arm rod, and a second gear is slidably sleeved on the bottom end of the outer tube. A first round shaft is rotatably connected to the inner wall of the top end of the arm rod, and a second round shaft is rotatably connected to the bottom end of the arm rod. The first round shaft and the second round shaft are connected in a transmission manner. A first transmission gear is fixedly connected to the outer wall of the first round shaft, and a second transmission gear is fixedly connected to the outer wall of the second round shaft. The second transmission gear meshes with the second gear, and the second gear is fixedly connected to an adjacent contact rod.

[0014] Furthermore, the lifting drive module includes a telescopic cylinder, the top of which is fixedly connected to the mounting frame, a crank arm is rotatably connected to the outer wall of the boom, a connecting seat is fixedly connected to the output end of the telescopic cylinder, and the crank arm is rotatably connected to the adjacent connecting seat.

[0015] Furthermore, the differential deflection mechanism includes a fixed frame, which is fixedly connected to a fixed plate. Both ends of the fixed frame are rotatably connected to sleeves. The top end of the arm is rotatably sleeved with an adjacent sleeve. A central shaft is rotatably connected to the inner walls of the two sleeves. A bevel gear one is fixedly sleeved at the middle position of the sleeve. A spur gear two is fixedly sleeved at the outer wall of one end of the sleeve. A socket is fixedly sleeved at the middle position of the central shaft. A bevel gear two is rotatably connected to one end of the socket. The bevel gear two is located between two spur gear twos, and the bevel gear two meshes with both spur gear twos.

[0016] Furthermore, the arm is zigzag-shaped, and the first and second circular shafts are connected by a transmission and rotate synchronously.

[0017] Furthermore, a return spring is installed between the top end of the second toothed rod and the inner top wall of the outer tube.

[0018] Furthermore, a transmission module is provided between the central shaft and the two offset push rods, and the rotation of the central shaft drives the two offset push rods to move up and down in opposite directions through the transmission module.

[0019] Furthermore, the transmission module includes two fixed seats, the top of the fixed seats is fixedly connected to the side bracket, the bottom of the fixed seats is rotatably connected to a first spur gear, one end of the central shaft is fixedly connected to a third spur gear, the third spur gear meshes with the first spur gear, and both sides of the offset push rod are fixedly connected to a first rack, the first rack meshes with the adjacent first spur gear.

[0020] Furthermore, an electric push rod is fixedly connected to the bottom end of the fixed plate, and a limit seat is fixedly connected to the bottom end of the electric push rod. The limit seat is used to contact the central shaft and restrict the rotation of the central shaft.

[0021] This invention also provides a method for assembling a car rearview mirror, wherein the specific steps for using the car rearview mirror assembly device are as follows:

[0022] Step 1: Place the rearview mirror housing inside the receiving mold, use a robotic arm to move the mounting bracket, use a fixing tube to attach the center of the mirror, and then move the mounting bracket to the top of the receiving mold.

[0023] Step 2: The lifting drive module drives the two transmission arm assemblies to deflect downwards, causing the two touch rods to rotate to below the mirror surface. Then, the robotic arm drives the mounting bracket to move down, so that the two touch rods come into contact with the adjustment tray. The touch rods are squeezed and retract relative to the mounting bracket. When the adjustment tray is tilted, the retraction amount of the two touch rods is different, and then the touch rods drive the two offset push rods to move up and down through the differential deflection mechanism.

[0024] Step 3: The two offset push rods are driven to move in opposite directions, thereby tilting the mirror so that the tilt angle of the mirror is consistent with the tilt angle of the tray;

[0025] Step 4: The lifting drive module drives the transmission arm assembly to rise back to the initial position, and the mounting bracket moves down to fasten the mirror onto the tray in a parallel position.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. With the differential deflection mechanism, after the suction cup adsorbs the center of the mirror, the lifting drive module drives the two touch rods to rotate below the mirror. Then, the robotic arm drives the mounting bracket to move down, so that the two touch rods contact the adjustment tray. When the adjustment tray is tilted, the two touch rods are squeezed and their relative upward retraction is different. Then, the touch rods drive the two offset push rods to move up and down through the differential deflection mechanism. The greater the tilt angle of the adjustment tray, the greater the distance the two offset push rods move towards each other. The offset push rods contact the mirror and tilt it, so that the tilt angle of the mirror is consistent with the tilt angle of the tray. This makes it easy for the mirror and the tray to be parallel and locked together. It avoids the tray being forcibly deflected due to uneven contact when the mirror and the tray are squeezed and locked together, which would damage the internal gears or structure of the adjustment tray.

[0028] 2. Through the arrangement of the transmission arm assembly, when the mounting bracket moves downward, the contact rod contacts and presses against the tray. The contact rod drives the rack two to move upward relative to the outer tube, causing the corresponding bevel gear one to rotate. The bevel gear one drives the adjacent spur gear two to rotate. Since the two transmission arm assemblies in the same group are centrally symmetrically arranged, when both contact rods retract, the two spur gears two on the differential deflection mechanism rotate in opposite directions. The rotation angle of the spur gear two is related to the retraction amount of the corresponding contact rod. Furthermore, since the bevel gear two is located between the two spur gears two and is parallel to both spur gears two, the rotation direction of the two spur gears two is opposite. When the adjusting tray is tilted, the two contact rods retract upwards at different rates, resulting in different rotation angles of the two spur gears. This causes the bevel gears to rotate on their own axis and revolve around the central shaft, which in turn rotates the central shaft. The rotation angle of the central shaft is positively correlated with the difference in the retraction of the two contact rods. The rotation of the central shaft causes the two offset push rods to move up and down, thereby tilting the mirror surface until it is parallel to the adjusting tray. The parallelism between the mirror surface and the adjusting tray is achieved by mechanical transmission, and this process is completed when the mirror surface is close to the adjusting tray, reducing process time and improving efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a schematic diagram of the overall front view structure of this invention; Figure 4 This is a schematic diagram of the mounting frame structure in this invention; Figure 5 This is a schematic diagram of the differential deflection mechanism in this invention; Figure 6 This is a schematic diagram of the transmission arm assembly structure in this invention; Figure 7 This is a schematic diagram of the boom structure in this invention; Figure 8This is a schematic diagram of the outer tube and the toothed rod structure in this invention.

[0030] In the diagram: 100, mounting bracket; 110, connecting rod; 120, fixing plate; 130, fixing pipe; 140, side bracket; 150, transmission module; 151, fixing seat; 152, spur gear one; 160, electric push rod; 161, limit seat; 200, lifting drive module; 210, telescopic cylinder; 220, connecting seat; 230, crank arm; 300, differential deflection mechanism; 310, fixing bracket; 311, sleeve; 312 313. Flat gear II; 320. Bevel gear I; 330. Central shaft; 331. Sleeve seat; 332. Bevel gear II; 340. Flat gear III; 400. Offset push rod; 410. Tooth rack I; 500. Transmission arm assembly; 510. Arm rod; 520. Round shaft I; 521. Transmission gear I; 530. Round shaft II; 531. Transmission gear II; 540. Outer tube; 541. Tooth rack II; 600. Contact rod; 700. Receiving mold. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-6In this embodiment of the invention, a car rearview mirror assembly device includes a robotic arm, a mounting bracket 100, a lifting drive module 200, a differential deflection mechanism 300, an offset push rod 400, a transmission arm assembly 500, a pressing rod 600, and a receiving mold 700. The receiving mold 700 is used to snap and limit the rearview mirror housing. A connecting rod 110 is fixedly connected to the middle position of the mounting bracket 100, and a fixing plate 120 is fixedly connected to the bottom end of the connecting rod 110. A fixing tube 130 is fixedly connected to the bottom end of the fixing plate 120, and a suction cup is fixedly connected to the bottom end of the fixing tube 130. There are two differential deflection mechanisms 300, which are respectively installed at both ends of the fixing plate 120. There are four transmission arm assemblies 500. The components are arranged in pairs, with each pair of transmission arm assemblies 500 corresponding to a different differential deflection mechanism 300. A pressure rod 600 is fixedly connected between the bottom ends of the two transmission arm assemblies 500 located on the same side. There are two lifting drive modules 200, each corresponding to one of the two transmission arm assemblies 500. The lifting drive modules 200 are fixedly mounted on the mounting frame 100 and are used to drive the corresponding transmission arm assembly 500 to deflect. There are two offset push rods 400, which are slidably mounted at both ends of the side bracket 140. The offset push rods 400 are used to tilt the mirror surface. A robotic arm is fixedly mounted to the mounting frame 100 and is used to move the mounting frame 100.

[0033] Specifically, after the rearview mirror housing is placed inside the receiving mold 700, the mounting bracket 100 is moved by a robotic arm. The center of the mirror surface is attracted by a suction cup below the fixing tube 130, and the mounting bracket 100 is moved directly above the receiving mold 700. The lifting drive module 200 drives the two transmission arm assemblies 500 to deflect downwards, causing the two contact rods 600 to rotate below the mirror surface. Then, the robotic arm moves the mounting bracket 100 downwards, causing the two contact rods 600 to contact the adjustment tray. The contact rods 600 are compressed and retract relative to the mounting bracket 100. When the adjustment tray tilts, the retraction amounts of the two contact rods 600 are different, thus the contact rods 600 drive the two offset push rods 4 via the differential deflection mechanism 300. The vertical movement of the offset push rod 400 is only related to the difference in the retraction of the two pressure rods 600. That is, the greater the tilt angle of the adjustment tray, the greater the distance the two offset push rods 400 move towards each other. One offset push rod 400 moves upward and the other offset push rod 400 moves downward to tilt the mirror surface, so that the tilt angle of the mirror surface is consistent with the tilt angle of the tray. This facilitates the parallel engagement of the mirror surface and the tray, and avoids the tray being forcibly deflected due to uneven contact when the mirror surface and the tray are pressed and engaged, which could damage the internal gears or structure of the adjustment tray. Example 1

[0034] like Figures 4-8 As shown, in this embodiment, the transmission arm assembly 500 further includes an arm 510. The top end of the arm 510 is connected to the top end of the differential deflection mechanism 300. An outer tube 540 is fixedly connected to the bottom end of the arm 510. A second gear 541 is slidably sleeved on the bottom end of the outer tube 540. A first round shaft 520 is rotatably connected to the inner wall of the top end of the arm 510. A second round shaft 530 is rotatably connected to the bottom end of the arm 510. A first round shaft 520 and a second round shaft 530 are connected to each other. The outer wall of the first round shaft 520 is fixedly connected to... A transmission gear 521 is fixedly connected to the outer wall of a round shaft 530. The transmission gear 531 meshes with a rack 541, which is fixedly connected to an adjacent pressure rod 600. The lifting drive module 200 includes a telescopic cylinder 210, the top of which is fixedly connected to a mounting bracket 100. A crank arm 230 is rotatably connected to the outer wall of the arm 510. A connecting seat 220 is fixedly connected to the output end of the telescopic cylinder 210. The crank arm 230 is connected to the adjacent connecting seat 220. The differential deflection mechanism 300 includes a fixed frame 310, which is fixedly connected to the fixed plate 120. Both ends of the fixed frame 310 are rotatably connected to sleeves 311. The top end of the arm 510 is rotatably sleeved with the adjacent sleeve 311. The two transmission arm assemblies 500 in the same group are centrally symmetrically designed. A central shaft 320 is rotatably connected to the inner walls of the two sleeves 311. A right bevel gear 313 is fixedly sleeved at the middle position of the sleeve 311. One end of the sleeve 311... A second spur gear 312 is fixedly sleeved on the outer wall. A sleeve seat 330 is fixedly sleeved at the middle position of the central shaft 320. A second bevel gear 331 is rotatably connected to one end of the sleeve seat 330. The second bevel gear 331 is located between the two second spur gears 312, and the second bevel gear 331 meshes with both second spur gears 312. The arm 510 is zigzag-shaped. The first round shaft 520 and the second round shaft 530 are connected by transmission and rotate synchronously. A return spring is installed between the top of the second gear 541 and the inner top wall of the outer tube 540.

[0035] In this embodiment, the output end of the telescopic cylinder 210 drives the connecting seat 220 to move downward. The connecting seat 220 drives the arm 510 to deflect downward through the crank arm 230, causing the two pressing rods 600 to deflect directly below the mirror surface. When the mounting bracket 100 moves downward, the pressing rods 600 contact and press with the tray, causing the pressing rods 600 to move upward and retract relative to the mounting bracket 100. The pressing rods 600 drive the second gear 541 to move upward relative to the outer tube 540. The upward movement of the outer tube 540 is transmitted through the second transmission gear 531. The rotation of the second round shaft 530 drives the rotation of the first round shaft 520, which in turn drives the rotation of the first round shaft 521. Since the deflection angle of the arm 510 is fixed by the telescopic cylinder 210, the arm 510 maintains a constant angle. Therefore, the rotation of the first transmission gear 521 directly drives the corresponding bevel gear 313 to rotate. The bevel gear 313 then drives the adjacent flat gear 312 to rotate. Because the two transmission arm assemblies 500 in the same group are centrally symmetrical... When both pressure levers 600 retract, the two spur gears 312 on the differential deflection mechanism 300 rotate in opposite directions. The rotation angle of the spur gear 312 is related to the retraction amount of the corresponding pressure lever 600. Since the bevel gear 331 is located between and meshes with both spur gears 312, when the adjustment tray is tilted, the upward retraction amount of the two pressure levers 600 is different, resulting in different rotation angles of the two spur gears 312. This causes the bevel gear 331 to rotate on its own axis and revolve around the central shaft 320, which in turn causes the central shaft 320 to rotate. The rotation angle of the central shaft 320 is positively correlated with the difference in the retraction amount of the two pressure levers 600. The rotation of the central shaft 320 causes the two offset push rods 400 to move up and down, thereby tilting the mirror surface to be parallel to the adjustment tray. The suction cup is generally made of rubber or other soft materials, which can withstand a certain degree of deformation. Therefore, a certain degree of tilting of the mirror surface when the suction cup is adsorbing the mirror surface will not cause the mirror surface to fall off.

[0036] The present invention also provides a method for assembling a car rearview mirror, which specifically includes the following steps: Step 1: Place the rearview mirror housing inside the receiving mold 700, and use a robotic arm to move the mounting bracket 100. Use the fixing tube 130 to attach the center of the mirror surface, and then move the mounting bracket 100 directly above the receiving mold 700. Step 2: The lifting drive module 200 drives the two transmission arm assemblies 500 to deflect downwards, causing the two touch rods 600 to rotate to below the mirror surface. Then, the robotic arm drives the mounting bracket 100 to move downwards, causing the two touch rods 600 to contact the adjustment tray. The touch rods 600 are squeezed and retract relative to the mounting bracket 100. When the adjustment tray is tilted, the retraction amount of the two touch rods 600 is different, and then the touch rods 600 drive the two offset push rods 400 to move up and down through the differential deflection mechanism 300. Step 3: The two offset push rods 400 are driven to move in opposite directions, thereby tilting the mirror so that the tilt angle of the mirror is consistent with the tilt angle of the tray. Step 4: The lifting drive module 200 drives the transmission arm assembly 500 to rise back to the initial position, and the mounting bracket 100 moves down to fasten the mirror onto the tray in a parallel position. Example 2

[0037] like Figures 2-6 As shown, in this embodiment, a transmission module 150 is provided between the central shaft 320 and the two offset push rods 400. The rotation of the central shaft 320 drives the two offset push rods 400 to move up and down in opposite directions through the transmission module 150. The transmission module 150 includes two fixed seats 151. The top of the fixed seat 151 is fixedly connected to the side bracket 140. The bottom of the fixed seat 151 is rotatably connected to a first spur gear 152. One end of the central shaft 320 is fixedly connected to a third spur gear 340. The third spur gear 340 meshes with the first spur gear 152. Both sides of the offset push rod 400 are fixedly connected to a first rack 410. The first rack 410 meshes with the adjacent first spur gear 152. The bottom end of the fixed plate 120 is fixedly connected to an electric push rod 160. The bottom end of the electric push rod 160 is fixedly connected to a limit seat 161. The limit seat 161 is used to contact the central shaft 320 and limit the rotation of the central shaft 320.

[0038] In specific implementation, when the central shaft 320 rotates, it drives the two spur gears 152 on both sides to rotate via the spur gear 340. The spur gear 152 drives the corresponding offset push rod 400 to move up and down via the rack 410, causing the two offset push rods 400 to move towards each other, facilitating the tilting of the mirror surface. When the mirror surface is level with the adjusting tray, the electric push rod 160 drives the limit seat 161 to move down, causing the limit seat 161 to abut against the central shaft 320, thereby restricting the rotation of the central shaft 320. This keeps the bevel gear 331 in its revolution position, and keeps the offset push rods 400 and the mirror surface in their current posture. Subsequently, the telescopic cylinder 210 drives the transmission arm assembly 500 to rise, and the transmission arm assembly 500 rotates around the central shaft 320. As the arm 510 rotates upwards, it drives the bevel gear 313 to rotate via the transmission gear 521. Since the position of the second bevel gear 331 is fixed, the two bevel gears 313 rotate synchronously in opposite directions. After the mirror and the adjusting tray are engaged, the electric push rod 160 drives the limit seat 161 to release the restriction on the central shaft 320. The 341 is reset under the action of the reset spring, thereby driving the second bevel gear 331 and the central shaft 320 to reset.

[0039] 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.

[0040] 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 car rearview mirror assembly device, characterized in that, include: The receiving mold (700) is used to snap and limit the rearview mirror housing. The mounting bracket (100) has a connecting rod (110) fixedly connected in the middle. The bottom end of the connecting rod (110) is fixedly connected to a fixing plate (120). The bottom end of the fixing plate (120) is fixedly connected to a fixing tube (130). The bottom end of the fixing tube (130) is fixedly connected to a suction cup. There are two differential deflection mechanisms (300), and the two differential deflection mechanisms (300) are respectively installed at both ends of the fixed plate (120); There are four transmission arm assemblies (500). The multiple transmission arm assemblies (500) are grouped in pairs, and the two groups of transmission arm assemblies (500) correspond to two differential deflection mechanisms (300) respectively. The bottom ends of the two transmission arm assemblies (500) located on the same side are fixedly connected with a pressure rod (600). There are two lifting drive modules (200), and the two lifting drive modules (200) correspond to two sets of transmission arm assemblies (500) respectively. The lifting drive modules (200) are fixedly installed on the mounting frame (100) and are used to drive the corresponding transmission arm assemblies (500) to deflect. There are two offset push rods (400), which are slidably installed at both ends of the side bracket (140). The offset push rods (400) are used to tilt the mirror surface. A robotic arm is used for fixed installation between the mounting frame (100) and the mounting frame (100) for moving the mounting frame (100); The transmission arm assembly (500) also includes an arm (510), the top end of which is connected to the top end of the differential deflection mechanism (300). An outer tube (540) is fixedly connected to the bottom end of the arm (510), and a second gear (541) is slidably sleeved on the bottom end of the outer tube (540). A round shaft (520) is rotatably connected to the inner wall of the top end of the arm (510). The bottom end of the shaft is rotatably connected to a second round shaft (530). The first round shaft (520) and the second round shaft (530) are connected in a transmission. The outer side wall of the first round shaft (520) is fixedly connected to a first transmission gear (521). The outer side wall of the second round shaft (530) is fixedly connected to a second transmission gear (531). The second transmission gear (531) meshes with a second rack (541). The second rack (541) is fixedly connected to an adjacent pressing rod (600). The differential deflection mechanism (300) includes a fixed frame (310), which is fixedly connected to a fixed plate (120). Both ends of the fixed frame (310) are rotatably connected to sleeves (311). The top end of the arm (510) is rotatably sleeved with the adjacent sleeve (311). The inner walls of the two sleeves (311) are rotatably connected to a central shaft (320). A bevel gear (313) is fixedly sleeved at the middle position of the sleeve (311). A spur gear (312) is fixedly sleeved at the outer wall of one end of the sleeve (311). A socket (330) is fixedly sleeved at the middle position of the central shaft (320). A bevel gear (331) is rotatably connected at one end of the socket (330). The bevel gear (331) is located between two spur gears (312), and the bevel gear (331) meshes with both spur gears (312).

2. The automotive rearview mirror assembly device according to claim 1, characterized in that, The lifting drive module (200) includes a telescopic cylinder (210), the top of which is fixedly connected to the mounting frame (100), a crank arm (230) is rotatably connected to the outer side wall of the arm (510), a connecting seat (220) is fixedly connected to the output end of the telescopic cylinder (210), and the crank arm (230) is rotatably connected to the adjacent connecting seat (220).

3. The automotive rearview mirror assembly device according to claim 1, characterized in that, The arm (510) is in the shape of a broken line, and the first round shaft (520) and the second round shaft (530) are connected by transmission and rotate synchronously.

4. The automotive rearview mirror assembly device according to claim 1, characterized in that, A return spring is installed between the top end of the second toothed rod (541) and the inner top wall of the outer tube (540).

5. A car rearview mirror assembly device according to claim 4, characterized in that, A transmission module (150) is provided between the central shaft (320) and the two offset push rods (400). The rotation of the central shaft (320) drives the two offset push rods (400) to move up and down in opposite directions through the transmission module (150).

6. The automotive rearview mirror assembly device according to claim 5, characterized in that, The transmission module (150) includes two fixed seats (151). The top of the fixed seat (151) is fixedly connected to the side bracket (140). The bottom of the fixed seat (151) is rotatably connected to a first spur gear (152). One end of the central shaft (320) is fixedly connected to a third spur gear (340). The third spur gear (340) meshes with the first spur gear (152). Both sides of the offset push rod (400) are fixedly connected to a first rack (410). The first rack (410) meshes with the adjacent first spur gear (152).

7. A car rearview mirror assembly device according to claim 6, characterized in that, An electric push rod (160) is fixedly connected to the bottom end of the fixed plate (120), and a limiting seat (161) is fixedly connected to the bottom end of the electric push rod (160). The limiting seat (161) is used to contact the central shaft (320) and restrict the rotation of the central shaft (320).

8. The method for assembling a car rearview mirror according to claim 7, characterized in that, The specific steps for using the automotive rearview mirror assembly device are as follows: Step 1: Place the rearview mirror housing inside the receiving mold (700), and use a robotic arm to move the mounting bracket (100). Use a fixing tube (130) to attach the center of the mirror surface, and move the mounting bracket (100) directly above the receiving mold (700). Step 2: The lifting drive module (200) drives the two transmission arm assemblies (500) to deflect downwards, causing the two touch rods (600) to rotate to below the mirror surface. Then, the mechanical arm drives the mounting bracket (100) to move downwards, causing the two touch rods (600) to contact the adjustment tray. The touch rods (600) are squeezed and retract relative to the mounting bracket (100). When the adjustment tray is tilted, the retraction amount of the two touch rods (600) is different. Then, the touch rods (600) drive the two offset push rods (400) to move up and down through the differential deflection mechanism (300). Step 3: The two offset push rods (400) are driven to move in opposite directions, thereby tilting the mirror so that the tilt angle of the mirror is consistent with the tilt angle of the tray; Step 4: The lifting drive module (200) drives the transmission arm assembly (500) to rise back to the initial position, and the mounting bracket (100) moves down to fasten the mirror onto the tray in a parallel position.

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