Fine adjustment mechanism for outside rear-view mirror of automobile

Abstract

The invention discloses a fine adjustment mechanism for an automobile outside rear-view mirror. The fine adjustment mechanism comprises a folding motor; the shell is used for mounting the folding motor; the planetary gear is located at the output end of the folding motor; the control column is positioned on the inner ring of the planetary gear and is connected with the rearview mirror connecting part; the clamping plate and the control column are elastically arranged; the clamping groove is formed in the inner ring of the planetary gear and is clamped and limited with the clamping plate; the induction coil is arranged in the control column; the magnetic block is arranged in the clamping plate; wherein a closed loop formed by the induction coil is electrified to generate a magnetic field, and magnetic attraction is generated on the magnetic block. When the folding motor is in a failure state, the induction coil is electrified to generate a magnetic field, the magnetic field is generated to magnetically attract the clamping plate containing the magnetic block, so that the clamping plate is separated from the clamping groove, the planetary gear is separated from the control column, and then the planetary gear is rotated by any angle to enable the clamping plate and the clamping groove not to be in butt joint; the folding motor cannot interfere with rotation of the rearview mirror, and the angle of the rearview mirror can be manually adjusted at will.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle accessories, and in particular to a fine-tuning mechanism for an automotive exterior rearview mirror. Background Art

[0002] An automotive exterior rearview mirror is an essential component that helps a driver constantly observe the information status of vehicles on the side and rear. Usually, a folding motor is supplemented to electronically control and adjust the deflection angle of the automotive exterior rearview mirror to achieve the best viewing angle.

[0003] However, when the electronic adjustment fails, such as the tooth jamming and wear between the planetary gear sets in the folding motor during long-term use, resulting in unstable meshing connection, it is difficult to drive the rearview mirror to rotate or reset when adjusting or folding and retracting the rearview mirror. Then, when the electronic adjustment fails to adjust the angle of the rearview mirror, it will cause inconvenience in obtaining the status of oncoming vehicles from the rear side during vehicle driving. Summary of the Invention

[0004] The purpose of the present invention is to propose a fine-tuning mechanism for an automotive exterior rearview mirror, which sets mechanical redundancy and has an electric / manual dual-mode drive. When the electronic adjustment fails, manual adjustment of the rearview mirror is supplemented to complete the angle adjustment of the rearview mirror.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A fine-tuning mechanism for an automotive exterior rearview mirror, comprising: A folding motor; A housing for mounting the folding motor; A planetary gear located at the output end of the folding motor; A control column located inside the inner ring of the planetary gear and connected to the connection part of the rearview mirror; A clamping plate elastically arranged with the control column; [[ID=۳۲]] A clamping groove opened in the inner ring of the planetary gear and engaged with the clamping plate for restriction; An induction coil arranged inside the control column; A magnetic block arranged inside the clamping plate; Wherein, an electric current is passed through the closed loop formed by the induction coil to generate a magnetic field, which generates magnetic attraction on the magnetic block, causing the clamping plate to retract towards the control column against the elasticity, and releasing the restriction between the clamping plate and the clamping groove.

[0006] Preferably, an elastic groove is opened at the central part inside the control column, an annular foam is arranged on the circumferential inner wall of the elastic groove, two symmetrically arranged horizontal grooves are opened in the control column, and the two clamping plates are respectively slidably connected to the two horizontal grooves, and one end of the clamping plate is in contact with the foam.

[0007] Preferably, the control column is fixedly connected with a metal cylinder, which is made of a conductive metal material. An iron core is fixedly arranged inside the metal cylinder, and an induction coil is regularly wound around the iron core. Both ends of the induction coil are connected to the metal cylinder. The metal cylinder passes through the control column, and one end thereof extends into the elastic groove, and the height of the end portion extending into the elastic groove is lower than that of the clamping plate.

[0008] Preferably, a connecting ring is fixedly connected to the control column coaxially, and a chassis is fixedly connected to the connecting ring coaxially. A power supply is installed on the chassis, and a trigger plate is elastically connected to the chassis. The trigger plate is made of the same material as the metal cylinder, and the positive and negative electrodes of the power supply are both connected to the trigger plate through wires.

[0009] Preferably, a central groove is opened at the center of the chassis, a central ring is fixedly connected to the central groove, a retaining ring is fixedly connected to the bottom of the central ring, the trigger plate is slidably connected inside the central ring, a tension spring is arranged between the trigger plate and the retaining ring, and both ends of the tension spring are respectively connected to the trigger plate and the retaining ring. The two connection ends of the positive and negative electrodes of the power supply and the trigger plate are both located in the area where the upper side of the trigger plate does not overlap with the metal cylinder.

[0010] Preferably, a transverse groove is opened on the chassis, a positioning plate is slidably connected inside the transverse groove, a compression spring is arranged inside the transverse groove, and both ends of the compression spring are respectively connected to the positioning plate and the inner wall of the transverse groove. The housing is provided with a plurality of positioning grooves adapted to the positioning plate.

[0011] Preferably, one end of the positioning plate away from the compression spring is a triangular tip, and the shape of the positioning groove is adapted to the triangular tip of the positioning plate, forming a triangular groove shape.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: When the folding motor fails in the present invention, the induction coil is energized to generate a magnetic field. The generation of the magnetic field magnetically attracts the clamping plate containing the magnetic block, so that the clamping plate disengages from the card slot, so that the planetary gear disengages from the control column. Then, after rotating at any angle so that the clamping plate and the card slot cannot be docked, the folding motor cannot interfere with the rotation of the rearview mirror, and the angle of the rearview mirror can be manually adjusted at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a fine adjustment mechanism for an external rearview mirror of an automobile proposed by the present invention; Figure 2 is a schematic structural diagram of another perspective of a fine adjustment mechanism for an external rearview mirror of an automobile proposed by the present invention; Figure 3 is a schematic structural diagram of the connection structure between the planetary gear and the control column in a fine adjustment mechanism for an external rearview mirror of an automobile proposed by the present invention; Figure 4 is Figure 3 a schematic exploded view of the structure.

[0014] In the figure: 1. Folding motor; 2. Housing; 3. Planetary gear; 4. Control column; 5. Clamping plate; 6. Card slot; 7. Magnet; 8. Elastic groove; 9. Foam; 10. Horizontal groove; 11. Metal cylinder; 12. Iron core; 13. Connecting ring; 14. Chassis; 15. Power supply; 16. Trigger plate; 17. Central groove; 18. Central ring; 19. Retaining ring; 20. Tension spring; 21. Horizontal slot; 22. Positioning plate; 23. Compression spring; 24. Positioning slot. Specific implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Refer to the attached Figure 1 - attached Figure 4 , an external rearview mirror fine-tuning mechanism for an automobile, comprising: Folding motor 1; Housing 2 for installing the folding motor 1; Planetary gear 3 located at the output end of the folding motor 1; Control column 4 located inside the inner ring of the planetary gear 3 and connected to the connecting part of the rearview mirror; Clamping plate 5 elastically arranged with the control column 4; Card slot 6 opened in the inner ring of the planetary gear 3 and clamped and restricted with the clamping plate 5; Induction coil arranged inside the control column 4; Magnet 7 arranged inside the clamping plate 5; Among them, when an electric current is applied to the closed loop formed by the induction coil to generate a magnetic field, a magnetic attraction is generated on the magnet 7, so that the clamping plate 5 retracts towards the control column 4 against the elasticity, releasing the restriction between the clamping plate 5 and the card slot 6.

[0017] Through the above technical solution, when the folding motor 1 fails, an electric current is applied to the induction coil to generate a magnetic field. The generation of the magnetic field magnetically attracts the clamping plate 5 containing the magnet 7, so that the clamping plate 5 disengages from the card slot 6, so that the planetary gear 3 is disengaged from the control column 4. After rotating at any angle so that the clamping plate 5 and the card slot 6 cannot be docked, the folding motor 1 cannot interfere with the rotation of the rearview mirror, and the angle of the rearview mirror can be adjusted manually at will.

[0018] An elastic groove 8 is opened in the central part of the control column 4. An annular foam 9 is arranged on the inner wall of the circumference of the elastic groove 8. Two symmetrically arranged horizontal grooves 10 are opened in the control column 4. The two clamping plates 5 are respectively slidably connected to the two horizontal grooves 10, and one end of the clamping plate 5 is in contact with the foam 9.

[0019] The elastic force of the foam 9 itself can prompt the clamping plate 5 to have a tendency to move in a direction away from the elastic groove 8. When the clamping plate 5 corresponds to the clamping groove 6, the elastic force of the foam 9 can clamp the clamping plate 5 and the clamping groove 6 together. When the clamping plate 5 is to be separated from the clamping groove 6, the clamping plate 5 relies on the magnetic force to overcome the elastic force of the foam 9, causing the foam 9 to deform inwardly.

[0020] The control column 4 is fixedly connected with a metal cylinder 11. The metal cylinder 11 is made of a conductive metal material. An iron core 12 is fixedly arranged inside the metal cylinder 11. The induction coil is regularly wound around the iron core 12, and both ends of the induction coil are connected to the metal cylinder 11. The metal cylinder 11 passes through the control column 4, and one end of it extends into the elastic groove 8. The height of the end part extending into the elastic groove 8 is lower than that of the clamping plate 5.

[0021] Both ends of the induction coil are connected to the metal cylinder 11. Energizing the metal cylinder 11 makes the induction coil energized and generates a magnetic field near the metal cylinder 11. The generated magnetic field magnetically attracts the magnetic block 7, causing the clamping plate 5 to move towards the center of the control column 4 and separate from the clamping groove 6.

[0022] The control column 4 is coaxially and fixedly connected with a connecting ring 13. The connecting ring 13 is coaxially and fixedly connected with a chassis 14. A power supply 15 is installed on the chassis 14. The chassis 14 is elastically connected with a trigger plate 16. The trigger plate 16 is made of the same material as the metal cylinder 11. The positive and negative poles of the power supply 15 are both connected to the trigger plate 16 through wires.

[0023] By adjusting the position of the trigger plate 16, it is possible to control whether the induction coil is energized.

[0024] A central groove 17 is opened in the center of the chassis 14. The central groove 17 is fixedly connected with a central ring 18. A retaining ring 19 is fixedly connected to the bottom of the central ring 18. The trigger plate 16 is slidably connected inside the central ring 18. A tension spring 20 is arranged between the trigger plate 16 and the retaining ring 19. Both ends of the tension spring 20 are respectively connected to the trigger plate 16 and the retaining ring 19. The two connection ends of the positive and negative poles of the power supply 15 and the trigger plate 16 are all located in the area on the upper side of the trigger plate 16 that does not overlap with the metal cylinder 11.

[0025] Through the above technical solution, in the natural state, the tension spring 20 pulls the trigger plate 16 so that it does not contact the metal cylinder 11, and the induction coil is in a de-energized state. By pushing the trigger plate 16 upward through the central groove 17 to overcome the elastic force of the tension spring 20 until the trigger plate 16 contacts the bottom of the metal cylinder 11, the induction coil is in an energized state.

[0026] A transverse groove 21 is opened in the chassis 14. A positioning plate 22 is slidably connected inside the transverse groove 21. A compression spring 23 is arranged inside the transverse groove 21. Both ends of the compression spring 23 are respectively connected to the positioning plate 22 and the inner wall of the transverse groove 21. The housing 2 is provided with a plurality of positioning grooves 24 adapted to the positioning plate 22.

[0027] One end of the positioning plate 22 away from the compression spring 23 is a triangular tip, and the shape of the positioning groove 24 is adapted to the triangular tip of the positioning plate 22, forming a triangular groove shape.

[0028] Through the above technical solution, when in the manual mode, after adjusting the rearview mirror angle by rotating the chassis 14, the adjusted angle can be determined to remain unchanged when the positioning plate 22 is snapped into the positioning groove 24.

[0029] Working principle: In the automatic mode, the rotation of the planetary gear 3 is controlled by the worm and worm gear drive of the folding motor 1, thereby controlling the angle of the rearview mirror; In the manual mode, the trigger plate 16 is pushed upward through the central groove 17 to overcome the elastic force of the tension spring 20 until the trigger plate 16 contacts the bottom of the metal cylinder 11. Then, the induction coil is energized, generating a magnetic field to magnetically attract the magnetic block 7 to make the clamping plate 5 disengage from the clamping groove 6. Keeping the state where the trigger plate 16 contacts the metal cylinder 11 and rotating the chassis 14 can manually adjust the angle of the rearview mirror. During maintenance and replacement, rotating the chassis 14 makes the positioning plate 22 just disengage from the positioning groove 24 to cancel the restraint with the housing 2, so that the control column 4 and the rearview mirror can be completely separated, facilitating the subsequent replacement of the folding motor 1.

[0030] It should be noted that: The foam 9 is a material obtained by foaming plastic particles, and has a series of characteristics such as elasticity, light weight, quick pressure-sensitive fixation, easy to use, flexible bending, ultra-thin volume, and reliable performance. In this solution, it serves as the elastic force for the clamping plate 5 to snap into the clamping groove 6.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An external rearview mirror fine-tuning mechanism for an automobile, characterized in that, Including: Folding motor (1); Housing (2) for mounting the folding motor (1); Planetary gear (3) located at the output end of the folding motor (1); Control column (4) located inside the inner ring of the planetary gear (3) and connected to the connecting part of the rearview mirror; Clamping plate (5) elastically arranged with the control column (4); Clamping slot (6) opened in the inner ring of the planetary gear (3) and clamped and restricted with the clamping plate (5); Induction coil arranged inside the control column (4); Magnet (7) arranged inside the clamping plate (5); Among them, when the closed loop formed by the induction coil is energized to generate a magnetic field, magnetic attraction is generated on the magnet (7), causing the clamping plate (5) to retract towards the control column (4) against the elasticity, releasing the restriction between the clamping plate (5) and the clamping slot (6).

2. The fine-tuning mechanism for an external rearview mirror of an automobile according to claim 1, wherein An elastic groove (8) is opened at the central part inside the control column (4). An annular foam (9) is arranged on the circumferential inner wall of the elastic groove (8). Two symmetrically arranged horizontal grooves (10) are opened in the control column (4). The two clamping plates (5) are respectively slidably connected to the two horizontal grooves (10), and one end of the clamping plate (5) is attached to the foam (9).

3. The fine adjustment mechanism for an external rearview mirror of an automobile according to claim 1, characterized in that, The control column (4) is fixedly connected with a metal cylinder (11). The metal cylinder (11) is made of a conductive metal material. An iron core (12) is fixedly arranged inside the metal cylinder (11). The induction coil is regularly wound around the iron core (12), and both ends of the induction coil are connected to the metal cylinder (11). The metal cylinder (11) passes through the control column (4), and one end of it extends into the elastic groove (8), and the height of the end part extending into the elastic groove (8) is lower than that of the clamping plate (5).

4. A fine adjustment mechanism for an external rearview mirror of an automobile according to claim 1, characterized in that, The control column (4) is coaxially fixedly connected with a connecting ring (13). The connecting ring (13) is coaxially fixedly connected with a chassis (14). A power supply (15) is installed on the chassis (14). A trigger plate (16) is elastically connected to the chassis (14). The trigger plate (16) is made of the same material as the metal cylinder (11). The positive and negative poles of the power supply (15) are both connected to the trigger plate (16) through wires.

5. The fine adjustment mechanism for an external rearview mirror of an automobile according to claim 4, characterized in that, A central groove (17) is opened at the center of the chassis (14). The central groove (17) is fixedly connected with a central ring (18). A retaining ring (19) is fixedly connected to the bottom of the central ring (18). The trigger plate (16) is slidably connected inside the central ring (18). A tension spring (20) is arranged between the trigger plate (16) and the retaining ring (19). The two ends of the tension spring (20) are respectively connected to the trigger plate (16) and the retaining ring (19). The two connection ends of the positive and negative poles of the power supply (15) to the trigger plate (16) are both located in the area on the upper side of the trigger plate (16) that does not overlap with the metal cylinder (11).

6. The fine adjustment mechanism for an external rearview mirror of an automobile according to claim 4, characterized in that A transverse groove (21) is opened in the chassis (14). A positioning plate (22) is slidably connected inside the transverse groove (21). A compression spring (23) is arranged inside the transverse groove (21). The two ends of the compression spring (23) are respectively connected to the positioning plate (22) and the inner wall of the transverse groove (21). The housing (2) is provided with a plurality of positioning grooves (24) adapted to the positioning plate (22).

7. The fine-tuning mechanism for an automotive exterior rearview mirror according to claim 6, characterized in that, One end of the positioning plate (22) away from the compression spring (23) is a triangular tip. The shape of the positioning groove (24) is adapted to the triangular tip of the positioning plate (22), forming a triangular groove shape.

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