Gear driving worm mechanism of automobile rearview mirror

Abstract

The utility model relates to the technical field of automobile rearview mirrors, in particular to an automobile rearview mirror gear driving worm mechanism which comprises a mirror frame, a mirror face is arranged on the mirror frame, the side wall of the mirror face slides on the inner side wall of the mirror frame, an adjusting assembly for adjusting the mirror face is arranged in the mirror frame, and a rotating block is arranged on one side of the mirror frame. Rotating grooves are formed in the sides, close to the glasses frame, of the rotating blocks, connecting blocks are rotationally connected to the rotating grooves, the ends, close to the glasses frame, of the connecting blocks are fixedly connected with the glasses frame, and buffering assemblies are arranged in the connecting blocks. According to the device, through the arranged buffer assembly, when the rearview mirror encounters external force, the connecting block can drive the mirror frame to rotate on the rotating block in the direction of the external force, so that the mirror frame and the mirror surface are turned over along the rotating block, the rearview mirror is folded, and the rearview mirror is prevented from being broken when the rearview mirror is subjected to collision and other external force; the torsion spring resets and drives the first rotating shaft to rotate, so that the first rotating shaft drives the rotating block and the mirror frame to reset.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile rearview mirrors, in particular to a gear-driven worm mechanism for an automobile rearview mirror. Background Art

[0002] The rearview mirror is an important automobile accessory for the driver to observe the status of the rear vehicles and pedestrians during driving. It is crucial for safe driving. In the adjustment of the rearview mirror, the worm gear transmission mechanism can adjust the angle of the lens and maintain a stable position, thereby helping the driver to observe the field of vision in a specific direction and facilitate safe driving.

[0003] Since the rearview mirrors of automobiles protrude from the left and right sides of the vehicle body, they are more likely to collide with objects and the rearview mirrors of other vehicles during driving. However, existing rearview mirrors of automobiles are generally not equipped with anti-collision mechanisms. Once a collision occurs, they are easily broken and damaged, and the entire rearview mirror can only be disassembled and replaced.

[0004] For example, the announcement number "CN208411569U" provides a car rearview mirror gear-driven worm gear mechanism. The device can enable the positioning pin to directly act on the large gear through the positioning mechanism, which has a better positioning effect and can save installation space. The design of the electric folder of the entire car exterior rearview mirror will also be more compact.

[0005] However, the above device still has the following problems during implementation:

[0006] However, when the car is driving, it is necessary to use the rearview mirror to observe the situation of the vehicle behind. If it collides with other vehicles or objects while driving, the rearview mirror housing and the reflector will be seriously damaged, threatening the safety of the car while driving. Utility Model Content

[0007] The utility model aims to provide a gear-driven worm mechanism for a rearview mirror of an automobile, so as to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A gear-driven worm mechanism for a rearview mirror of an automobile, comprising a mirror frame, a mirror surface being arranged on the mirror frame, a side wall of the mirror surface sliding on an inner side wall of the mirror frame, an adjusting assembly for adjusting the mirror surface being arranged inside the mirror frame, a rotating block being arranged on one side of the mirror frame, a rotating groove being provided on a side of the rotating block close to the mirror frame, a connecting block being rotatably connected to the rotating groove, an end of the connecting block close to the mirror frame being fixedly connected to the mirror frame, and a buffer assembly being arranged inside the connecting block;

[0010] The buffer assembly includes a first rotating shaft, which is fixedly connected to the inside of the connecting block. The top and bottom of the rotating groove are both provided with rotating holes. The two ends of the first rotating shaft are rotatably connected to adjacent rotating holes. The top and bottom of the connecting block are both provided with torsion springs, which are sleeved on the two ends of the first rotating shaft. One end of the torsion spring is fixed to the connecting block, and the other end is fixedly installed in the rotating hole.

[0011] Preferably: the adjustment assembly includes two first drive motors, the two first drive motors are fixedly installed inside the frame, the output ends of the two first drive motors are fixedly connected to the first transmission worm through a coupling, two fixed blocks are fixedly installed inside the frame, and the other ends of the two first transmission worms are rotatably connected to adjacent fixed blocks.

[0012] Preferably, the adjustment assembly further comprises two transmission worm wheels, both of which are rotatably connected to the inside of the frame, and the two transmission worm wheels are respectively meshed with adjacent first transmission worms, and adjustment sleeves are fixedly installed on the tops of the two transmission worm wheels, and thread grooves are provided inside the two adjustment sleeves, and the two adjustment sleeves are threadedly connected to the adjustment cylinders through the thread grooves;

[0013] Two limit rods are also fixedly installed inside the mirror frame, and the two limit rods are respectively rotatably connected to adjacent transmission worm gears, and the tops of the two limit rods respectively penetrate the adjacent transmission worm gears and extend into the adjustment sleeves, and the tops of the two limit rods are respectively rotatably connected to the insides of adjacent adjustment cylinders, and the tops of the two adjustment cylinders are fixedly installed with first fixed balls, and the tops of the two first fixed balls are rotatably connected to the mirror surface.

[0014] Preferably, a fixing plate is fixedly mounted inside the mirror frame, a fixing tube is fixedly mounted on the top of the fixing plate, a second fixing ball is fixedly mounted on the top of the fixing tube, and the top of the second fixing ball is rotatably connected to the mirror surface.

[0015] Preferably: a mounting block is provided on a side of the rotating block away from the mirror frame, one end of the mounting block is fixedly mounted on the car, a connecting groove is provided on a side of the mounting block close to the rotating block, and the rotating block is rotatably connected to the mounting block through the connecting groove;

[0016] A second rotating shaft is fixedly installed inside the rotating block, both ends of the second rotating shaft are extended to the outside of the rotating block, a clamping groove is opened on the bottom wall of the connecting groove, and the bottom of the second rotating shaft is rotatably connected to the clamping groove.

[0017] Preferably: a second drive motor is fixedly installed inside the mounting block, an output end of the second drive motor is fixedly connected to a second transmission worm via a coupling, a rotating gear is fixedly installed on the top of the second rotating shaft, the rotating gear is meshed with the second transmission worm, and the other end of the second transmission worm is rotatably connected to the inside of the mounting block.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model provides a buffer assembly. When the rearview mirror encounters an external force, the connecting block drives the mirror frame to rotate on the rotating block in the direction of the external force, so that the mirror frame and the mirror surface flip along the rotating block, and the rearview mirror is folded, so as to avoid the rearview mirror from breaking when it is subjected to external forces such as collision. When the external force is released, the torsion spring is reset and drives the first rotating shaft to rotate at the same time, so that the first rotating shaft drives the rotating block and the mirror frame to reset, which is convenient for continued use.

[0020] 2. The utility model can increase the adjustable range of the mirror surface and make the adjustment more accurate by providing two first transmission worms and transmission worm wheels in the mirror frame when in use. At the same time, by providing a fixed plate and a fixed cylinder in the mirror frame, when the first fixed ball pushes the mirror surface upward, the auxiliary support of the second fixed ball can make the mirror surface more stable during adjustment. At the same time, by providing a mounting block, when in use, by starting the second drive motor in the mounting block, the second drive motor can drive the second transmission worm and the rotating gear to rotate, so that the rotating block drives the connecting block and the mirror frame to rotate in the mounting block, so that the rearview mirror is retracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the first perspective of the present utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the mirror frame in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the middle buffer assembly and the rotating block of the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the mounting block in the utility model;

[0025] Figure 5 It is a partial structural schematic diagram of the adjustment component in the utility model.

[0026] In the figure: 1. mirror frame; 11. mirror surface; 12. connecting block; 13. rotating block; 14. first rotating shaft; 15. rotating hole; 16. second rotating shaft; 17. rotating gear; 18. fixed block; 2. adjusting assembly; 21. first driving motor; 22. first transmission worm; 23. transmission worm wheel; 24. adjusting sleeve; 25. adjusting cylinder; 26. first fixed ball; 27. fixed plate; 28. fixed cylinder; 29. ​​second fixed ball; 3. mounting block; 31. second driving motor; 32. second transmission worm. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] For example, see Figure 1-5 A gear-driven worm mechanism for a rearview mirror of an automobile comprises a mirror frame 1, a mirror surface 11 is arranged on the mirror frame 1, a side wall of the mirror surface 11 slides on the inner wall of the mirror frame 1, an adjusting component 2 for adjusting the mirror surface 11 is arranged inside the mirror frame 1, a rotating block 13 is arranged on one side of the mirror frame 1, a rotating groove is provided on the rotating block 13 close to the side of the mirror frame 1, a connecting block 12 is rotatably connected on the rotating groove, an end of the connecting block 12 close to the mirror frame 1 is fixedly connected to the mirror frame 1, a buffer component is arranged inside the connecting block 12, the buffer component comprises a first rotating shaft 14, the first rotating shaft 14 is fixedly connected to the inside of the connecting block 12, a rotating hole 15 is provided at the top and the bottom of the rotating groove, two ends of the first rotating shaft 14 are rotatably connected to adjacent rotating holes 15, a torsion spring is arranged at the top and the bottom of the connecting block 12, the torsion spring is sleeved on the two ends of the first rotating shaft 14, one end of the torsion spring is connected to the connecting block The connecting block 12 is fixed, and the other end is fixedly installed in the rotating hole 15. A mounting block 3 is provided on the side of the rotating block 13 away from the mirror frame 1. One end of the mounting block 3 is fixedly installed on the car. A connecting groove is provided on the side of the mounting block 3 close to the rotating block 13. The rotating block 13 is rotatably connected to the mounting block 3 through the connecting groove. A second rotating shaft 16 is fixedly installed inside the rotating block 13. Both ends of the second rotating shaft 16 are to the outside of the rotating block 13. A clamping groove is provided on the bottom wall of the connecting groove. The bottom of the second rotating shaft 16 is rotatably connected to the clamping groove. A second driving motor 31 is fixedly installed inside the mounting block 3. The output end of the second driving motor 31 is fixedly connected to the second transmission worm 32 through a coupling. A rotating gear 17 is fixedly installed on the top of the second rotating shaft 16. The rotating gear 17 is meshed with the second transmission worm 32. The other end of the second transmission worm 32 is rotatably connected to the inside of the mounting block 3.

[0029] When the rearview mirror is in use, when an external force acts on it, the connecting block 12 drives the mirror frame 1 to rotate on the rotating block 13 in the direction of the external force, so that the mirror frame 1 and the mirror surface 11 are turned over along the rotating block 13, so that the rearview mirror is folded. When the connecting block 12 rotates on the rotating block 13, the first rotating shaft 14 rotates on the rotating hole 15 at the same time, and the torsion spring on the first rotating shaft 14 is stretched. When the external force is released, the torsion spring is reset and drives the first rotating shaft 14 to rotate at the same time, so that the first rotating shaft 14 drives the rotating block 13 and the mirror frame 1 to reset.

[0030] By providing a buffer component, when the rearview mirror encounters an external force, the mirror frame 1 can be rotated along with the external force through the buffer component, thereby preventing the rearview mirror from being broken when it is subjected to external forces such as collision;

[0031] When the rearview mirror needs to be folded and stowed, first start the second drive motor 31 in the mounting block 3, so that the second drive motor 31 drives the second transmission worm 32 to rotate. When the second transmission worm 32 rotates, the rotating gear 17 meshing with the second transmission worm 32 rotates at the same time under the drive of the second transmission worm 32. The second rotating shaft 16 and the rotating block 13 are driven by the rotation of the rotating gear 17, so that the rotating block 13 drives the connecting block 12 and the mirror frame 1 to rotate in the mounting block 3, so that the rearview mirror is folded.

[0032] For example 2, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5The adjustment component 2 includes two first drive motors 21, and the two first drive motors 21 are fixedly installed inside the frame 1. The output ends of the two first drive motors 21 are fixedly connected to the first transmission worm 22 through a coupling. Two fixed blocks 18 are fixedly installed inside the frame 1. The other ends of the two first transmission worms 22 are rotatably connected to adjacent fixed blocks 18. The adjustment component 2 also includes two transmission worm wheels 23, and the two transmission worm wheels 23 are rotatably connected to the inside of the frame 1. The two transmission worm wheels 23 are respectively meshed with the adjacent first transmission worms 22. The tops of the two transmission worm wheels 23 are fixedly installed with adjustment sleeves 24, and the interiors of the two adjustment sleeves 24 are provided with threaded grooves. The two adjustment sleeves 24 are connected by The thread groove is threadedly connected with an adjustment cylinder 25, and two limit rods are fixedly installed inside the mirror frame 1. The two limit rods are respectively rotatably connected to adjacent transmission worm gears 23, and the tops of the two limit rods respectively penetrate the adjacent transmission worm gears 23 and extend into the adjustment sleeve 24. The tops of the two limit rods are respectively rotatably connected to the inside of the adjacent adjustment cylinders 25. The tops of the two adjustment cylinders 25 are both fixedly installed with first fixed balls 26, and the tops of the two first fixed balls 26 are both rotatably connected to the mirror surface 11. A fixed plate 27 is also fixedly installed inside the mirror frame 1, and a fixed cylinder 28 is fixedly installed on the top of the fixed plate 27. A second fixed ball 29 is fixedly installed on the top of the fixed cylinder 28, and the top of the second fixed ball 29 is rotatably connected to the mirror surface 11.

[0033] When the angle of the mirror surface 11 needs to be adjusted, the first driving motor 21 in the frame 1 is first started, so that the first driving motor 21 drives the first transmission worm 22 to rotate. When the first transmission worm 22 rotates, the transmission worm wheel 23 meshing with the first transmission worm 22 rotates at the same time, thereby driving the adjustment sleeve 24 on the transmission worm wheel 23 to rotate. Under the action of the limit rod, when the adjustment sleeve 24 rotates, the adjustment cylinder 25 connected in the adjustment sleeve 24 starts to move up and down along the adjustment sleeve 24. When the adjustment cylinder 25 moves upward, the first fixed ball 26 pushes the mirror surface 11, so that the mirror surface 11 slides on the frame 1, thereby adjusting the angle of the mirror surface 11.

[0034] By setting two first transmission worms 22 and a transmission worm wheel 23 in the frame 1, the adjustable range of the mirror surface 11 can be increased during use, so that the adjustment accuracy is higher. At the same time, by setting a fixed plate 27 and a fixed cylinder 28 in the frame 1, when the first fixed ball 26 pushes the mirror surface 11 upward, the auxiliary support of the second fixed ball 29 can make the mirror surface 11 more stable during adjustment.

[0035] Working principle: When the rearview mirror is in use, when an external force is applied to it, the connecting block 12 will drive the mirror frame 1 to rotate on the rotating block 13 in the direction of the external force, so that the mirror frame 1 and the mirror surface 11 are turned over along the rotating block 13, so that the rearview mirror is folded. When the connecting block 12 rotates on the rotating block 13, the first rotating shaft 14 rotates on the rotating hole 15 at the same time, and the torsion spring on the first rotating shaft 14 is stretched. When the external force is released, the torsion spring is reset and drives the first rotating shaft 14 to rotate at the same time, so that the first rotating shaft 14 drives the rotating block 13 and the mirror frame 1 to reset.

[0036] When the rearview mirror needs to be folded and stowed, the second drive motor 31 in the mounting block 3 is first started, so that the second drive motor 31 drives the second transmission worm 32 to rotate. When the second transmission worm 32 rotates, the rotating gear 17 meshing with the second transmission worm 32 rotates at the same time under the drive of the second transmission worm 32, and the second rotating shaft 16 and the rotating block 13 are driven to rotate by the rotating gear 17, so that the rotating block 13 drives the connecting block 12 and the mirror frame 1 to rotate in the mounting block 3, so that the rearview mirror is stowed;

[0037] When the angle of the mirror surface 11 needs to be adjusted, first start the first drive motor 21 in the frame 1, so that the first drive motor 21 drives the first transmission worm 22 to rotate. When the first transmission worm 22 rotates, the transmission worm wheel 23 meshing with the first transmission worm 22 rotates at the same time, thereby driving the adjustment sleeve 24 on the transmission worm wheel 23 to rotate. Under the action of the limit rod, when the adjustment sleeve 24 rotates, the adjustment cylinder 25 connected in the adjustment sleeve 24 starts to move up and down along the adjustment sleeve 24. When the adjustment cylinder 25 moves upward, the first fixed ball 26 pushes the mirror surface 11, so that the mirror surface 11 slides on the frame 1, thereby adjusting the angle of the mirror surface 11.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear-driven worm mechanism for a rearview mirror of an automobile, comprising a mirror frame (1), characterized in that: The frame (1) is provided with a mirror surface (11), the side wall of the mirror surface (11) slides on the inner wall of the frame (1), an adjusting component (2) for adjusting the mirror surface (11) is provided inside the frame (1), a rotating block (13) is provided on one side of the frame (1), a rotating groove is provided on the side of the rotating block (13) close to the frame (1), a connecting block (12) is rotatably connected to the rotating groove, one end of the connecting block (12) close to the frame (1) is fixedly connected to the frame (1), and a buffer component is provided inside the connecting block (12); The buffer assembly comprises a first rotating shaft (14), the first rotating shaft (14) being fixedly connected to the interior of the connecting block (12), the top and bottom of the rotating groove being provided with rotating holes (15), the two ends of the first rotating shaft (14) being rotatably connected to adjacent rotating holes (15), the top and bottom of the connecting block (12) being provided with torsion springs, the torsion springs being sleeved on the two ends of the first rotating shaft (14), one end of the torsion spring being fixed to the connecting block (12), and the other end being fixedly installed in the rotating hole (15).

2. The automotive rearview mirror gear drive worm mechanism according to claim 1, characterized in that: The adjustment assembly (2) comprises two first drive motors (21), the two first drive motors (21) are fixedly mounted inside the mirror frame (1), the output ends of the two first drive motors (21) are fixedly connected to a first transmission worm (22) via a coupling, two fixed blocks (18) are fixedly mounted inside the mirror frame (1), and the other ends of the two first transmission worms (22) are rotatably connected to adjacent fixed blocks (18).

3. The automotive rearview mirror gear drive worm mechanism according to claim 1, characterized in that: The adjustment assembly (2) further comprises two transmission worm wheels (23), the two transmission worm wheels (23) are rotatably connected to the interior of the lens frame (1), and the two transmission worm wheels (23) are respectively meshed with adjacent first transmission worms (22), and adjustment sleeves (24) are fixedly mounted on the tops of the two transmission worm wheels (23), the interiors of the two adjustment sleeves (24) are provided with thread grooves, and the two adjustment sleeves (24) are threadedly connected to the adjustment cylinders (25) via the thread grooves; Two limit rods are also fixedly mounted inside the mirror frame (1), the two limit rods are rotatably connected to adjacent transmission worm wheels (23), and the tops of the two limit rods respectively penetrate the adjacent transmission worm wheels (23) and extend into the adjustment sleeves (24), the tops of the two limit rods are rotatably connected to the inside of adjacent adjustment cylinders (25), the tops of the two adjustment cylinders (25) are fixedly mounted with first fixing balls (26), and the tops of the two first fixing balls (26) are rotatably connected to the mirror surface (11).

4. The automotive rearview mirror gear drive worm mechanism according to claim 1, characterized in that: A fixing plate (27) is fixedly mounted inside the mirror frame (1), a fixing cylinder (28) is fixedly mounted on the top of the fixing plate (27), a second fixing ball (29) is fixedly mounted on the top of the fixing cylinder (28), and the top of the second fixing ball (29) is rotatably connected to the mirror surface (11).

5. The automotive rearview mirror gear drive worm mechanism according to claim 1, characterized in that: A mounting block (3) is provided on a side of the rotating block (13) away from the mirror frame (1); one end of the mounting block (3) is fixedly mounted on the vehicle; a connecting groove is provided on a side of the mounting block (3) close to the rotating block (13); and the rotating block (13) is rotatably connected to the mounting block (3) via the connecting groove; A second rotating shaft (16) is fixedly mounted inside the rotating block (13), both ends of the second rotating shaft (16) are extended to the outside of the rotating block (13), a clamping groove is provided on the bottom wall of the connecting groove, and the bottom of the second rotating shaft (16) is rotatably connected to the clamping groove.

6. The automotive rearview mirror gear drive worm mechanism according to claim 5, characterized in that: A second drive motor (31) is fixedly mounted inside the mounting block (3); an output end of the second drive motor (31) is fixedly connected to a second transmission worm (32) via a coupling; a rotating gear (17) is fixedly mounted on the top of the second rotating shaft (16); the rotating gear (17) is meshed with the second transmission worm (32); and the other end of the second transmission worm (32) is rotatably connected to the inside of the mounting block (3).

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