Adjustment device for automobile rearview mirror, rearview mirror and adjustment method

Abstract

The present invention discloses an electromechanical control technology. The adjustment device of the automobile rearview mirror of the present invention comprises a planetary gear mechanism connected to a driving device, an outer ring gear is provided on the gear ring, and a ring gear driven gear meshing with the outer ring gear is provided, the ring gear driven gear is connected to a first worm gear transmission mechanism, the planet carrier is connected to a second worm gear transmission mechanism, a braking device is provided on the first worm gear transmission mechanism and the second worm gear transmission mechanism, and a first direction rotating gear is provided with the first worm gear transmission mechanism, and a second direction rotating gear is provided with the second worm gear transmission mechanism. The adjustment device cleverly utilizes the planetary gear mechanism, cooperates with the first worm gear transmission mechanism and the second worm gear transmission mechanism to form an axial movement in two directions, and the entire device only needs one driving device to realize the adjustment of the rearview mirror in two directions, and the entire adjustment device has a simple structure and a small volume, which is conducive to controlling the assembly accuracy and assembly quality, and controlling the cost.

Description

Technical Field

[0001] The invention relates to an electromechanical control technology, and in particular to an adjustment device for a vehicle rearview mirror, a rearview mirror and an adjustment method. Background Art

[0002] The adjustment device of the exterior rearview mirror of an existing automobile includes two directions of rotation. One is to rotate around an axis approximately perpendicular to the ground to complete the folding and unfolding of the exterior rearview mirror; the other is to rotate around an axis approximately parallel to the ground to complete the pitch of the exterior rearview mirror. This two-directional rotation is achieved by two separate control devices.

[0003] For example, the Chinese patent: Automobile rearview mirror driver, application number: 2011101854496, discloses an automobile rearview mirror driver, which includes a base, an upper cover, a floating plate, a floating rod, a transmission device, and two motors and an arc-shaped rack connected to the transmission device; it provides an automobile rearview mirror driver with good stability during adjustment, low noise, large bearing capacity, smooth manual adjustment, and large adjustment angle. However, while meeting the adjustment function, the mirror driver has the following disadvantages: two separate control devices require a transmission device and two motors, resulting in a dispersed and complex structure, a large overall volume of components, and is not conducive to controlling assembly accuracy, quality, and cost. Summary of the invention

[0004] The purpose of the present invention is to overcome the technical problems of the existing rearview mirror adjustment device, such as the dispersed and complex structure, the large overall volume of the components, and the disadvantages of controlling the assembly precision, quality and cost, and to provide an adjustment device, a rearview mirror and an adjustment method for an automobile rearview mirror. The adjustment device cleverly utilizes a planetary gear mechanism, and cooperates with a first worm gear transmission mechanism and a second worm gear transmission mechanism to form axial movement in two directions. The entire device only needs one driving device to realize the adjustment of the rearview mirror in two directions. The entire adjustment device has a simple structure and a small volume, which is conducive to controlling the assembly precision and assembly quality, and controlling the production cost.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] A device for adjusting a rearview mirror of an automobile comprises a planetary gear mechanism connected to a driving device, wherein the planetary gear mechanism comprises a sun gear, a planetary gear, a planetary carrier and a ring gear, wherein the ring gear is provided with an outer ring gear and is provided with a ring gear driven gear meshing with the outer ring gear, wherein the ring gear driven gear is connected to a first worm gear transmission mechanism, wherein the planetary carrier is connected to a second worm gear transmission mechanism, wherein a braking device is provided on the first worm gear transmission mechanism and the second worm gear transmission mechanism, wherein a first direction rotating gear is provided with the first worm gear transmission mechanism and a second direction rotating gear is provided with the second worm gear transmission mechanism, wherein the first direction rotating gear and the second direction rotating gear are both connected to a housing on which the rearview mirror is mounted.

[0007] The adjusting device cleverly utilizes a planetary gear mechanism, and provides an outer ring gear and a ring gear driven wheel, cooperates with a first worm gear transmission mechanism and a second worm gear transmission mechanism, utilizes a first rotating gear and a second rotating gear to form axial motion in two directions, and realizes the action requirements of the entire adjusting device and the rearview mirror; a braking device is provided on both the first worm gear transmission mechanism and the second worm gear transmission mechanism, when the first worm gear transmission mechanism is braked, the ring gear driven gear and the ring gear are braked, the driving device drives the planetary wheel to rotate and revolve, and drives the planetary carrier and the second worm gear transmission mechanism to rotate, realizes the rotation of the second rotating gear, and realizes the second-direction adjustment of the rearview mirror; conversely, when the second worm gear transmission mechanism is braked, the planetary carrier is braked, the revolution of the planetary wheel is limited, the driving device drives the planetary wheel to rotate and the ring gear to rotate, drives the first worm gear transmission mechanism to rotate, realizes the rotation of the first rotating gear and the second-direction adjustment of the rearview mirror, the entire device only needs one driving device to realize the adjustment of the rearview mirror in two directions, the entire adjusting device has a simple structure and a small volume, is conducive to controlling assembly accuracy and assembly quality, and controls costs.

[0008] Preferably, the first worm gear mechanism is equipped with a horizontal axis rotating gear, and the second worm gear mechanism is equipped with a vertical axis rotating gear. Conversely, the first worm gear mechanism can be equipped with a vertical axis rotating gear, and the second worm gear mechanism can be equipped with a horizontal axis rotating gear to achieve rotation adjustment of the rearview mirror in two directions.

[0009] Preferably, the first worm gear transmission mechanism comprises a first transmission worm arranged on the ring gear driven gear, and the first transmission worm is provided with first worm teeth, and the horizontal axis rotating gear is matched with the first worm teeth to form a worm gear structure.

[0010] Preferably, the second worm gear transmission mechanism includes a second transmission worm gear disposed on the planetary carrier, and a second worm gear tooth is disposed on the second transmission worm gear, and the vertical shaft gear and the second worm gear tooth are matched to form a worm gear structure. The device combines the worm gear mechanism with the planetary gear mechanism, and utilizes the worm gear mechanism's compact structure, large transmission ratio, stable operation, low noise and self-locking performance, further simplifies the structure, reduces the volume of the entire adjustment device, ensures the movement accuracy of the rearview mirror, and ensures stable performance after long-term operation.

[0011] Preferably, the brake device includes a solenoid valve, a spring and a brake disc, and friction discs are provided on the first transmission worm and the second transmission worm, respectively. The contact or separation of the brake disc and the friction disc is achieved by controlling the on and off of the solenoid valve, thereby achieving or stopping braking, controlling the rotation or stopping of the first transmission worm and the second transmission worm, and achieving the steering of the entire adjustment device, which plays a key role in achieving accurate adjustment of the position of the rearview mirror of the car.

[0012] Preferably, the vertical axis rotating gear is connected with a support, the adjustment device components of the automobile rearview mirror are arranged in the housing, and the support is connected to the housing by a ball joint. The support is used to place the entire adjustment device on the automobile, and the support is connected to the housing by a ball joint to facilitate the folding and unfolding of the housing and the rearview mirror.

[0013] Regarding the technical problem that there is a gap between the exterior rearview mirror housing and the lens, the sealing is poor, water and dust easily enter, and have an adverse effect on the product life:

[0014] Preferably, the housing comprises an inner housing and an outer housing, the inner housing is connected to the outer housing by a ball joint, the horizontal axis rotating gear is arranged on the outer housing, the other adjustment device components of the rearview mirror are arranged in the inner housing, the inner housing is connected to the support by a ball joint, and the rearview mirror lens is mounted on the outer housing. The horizontal axis rotating gear is arranged in the outer housing, the inner housing is connected to the outer housing by a ball joint, and when the horizontal axis rotating gear rotates to drive the rearview mirror to pitch, other components in the inner housing do not need to move, thus reducing wear and tear, and at the same time, the gap between the rearview mirror housing and the lens can be reduced, thereby improving sealing, reducing dust ingress, and ensuring performance.

[0015] Preferably, the driving device comprises a driving motor, the output shaft of the driving motor is connected to a driving worm, and a driven worm wheel is provided with the driving worm, and the output shaft of the driven worm wheel is connected to the sun wheel of the planetary gear mechanism. By controlling the rotation of the planetary gear mechanism, the adjustment of the rearview mirror of the vehicle in two directions can be achieved with only one driving motor, the overall structure is simplified, the volume of the device is reduced, and the cost is saved.

[0016] A car rearview mirror comprises the above-mentioned adjusting device for the car rearview mirror.

[0017] A method for adjusting an adjusting device for a vehicle rearview mirror, when the adjusting device for a vehicle rearview mirror is used for adjusting the vehicle rearview mirror, comprises the following steps:

[0018] A. Determine the adjustment direction of the rearview mirror. If the mirror is to be rotated in the first direction, activate the brake device on the second worm gear mechanism. If the mirror is to be rotated in the second direction, activate the brake device on the first worm gear mechanism.

[0019] B. Start the driving device. If the first worm gear transmission mechanism is braked, the planetary wheel rotates and revolves, driving the planetary carrier and the second worm gear transmission mechanism to rotate, thus realizing the second rotation of the rearview mirror;

[0020] C. In step B, if the second worm gear mechanism is braked, the planetary gear can only rotate on its own, and the ring gear drives the ring gear driven gear to rotate, thereby realizing the rotation of the first worm gear mechanism and realizing the first direction rotation of the rearview mirror.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The adjusting device cleverly utilizes a planetary gear mechanism, and cooperates with a first worm gear transmission mechanism and a second worm gear transmission mechanism to form axial movement in two directions. The entire device only needs one driving device to adjust the rearview mirror in two directions. The entire adjusting device has a simple structure and a small volume, which is conducive to controlling assembly accuracy and assembly quality, and controlling costs.

[0023] The device combines the worm gear mechanism with the planetary gear mechanism, and utilizes the worm gear mechanism's compact structure, large transmission ratio, stable operation, low noise and self-locking performance to further simplify the structure, reduce the volume of the entire adjustment device, ensure the movement accuracy of the rearview mirror, and ensure stable performance after long-term operation;

[0024] By controlling the on and off of the solenoid valve, the brake disc and the friction disc are brought into contact or separated, thereby achieving or stopping braking, controlling the rotation or stopping of the first transmission worm and the second transmission worm, and achieving the steering of the entire adjustment device, which plays a key role in achieving accurate adjustment of the position of the rearview mirror of the car;

[0025] By controlling the rotation of the planetary gear mechanism, the automobile rearview mirror can be adjusted in two directions with only one drive motor, thereby simplifying the overall structure, reducing the size of the device, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure is a schematic structural diagram of the adjusting device for the automobile rearview mirror of the present invention.

[0027] Figure 2 Schematic diagram of another direction of the adjusting device of the automobile rearview mirror of the present invention in an embodiment.

[0028] Markings in the figure: 1-driving motor, 2-driving worm, 3-driven worm wheel, 4-sun gear, 5-planetary gear, 6-planet carrier, 7-ring gear, 8-first worm gear transmission mechanism, 801-first transmission worm, 802-first worm gear tooth, 803-first transmission brake disc, 804-first transmission friction disc, 805-first spring, 806-first solenoid valve, 9-second worm gear transmission mechanism, 901-second transmission worm, 902-second worm gear tooth, 903-second transmission brake disc, 904-second transmission friction disc, 905-second spring, 906-second solenoid valve, 10-vertical shaft gear, 11-horizontal shaft gear, 12-ring gear driven gear, 13-inner housing, 14-outer housing, 15-support. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention. Example 1

[0030] like Figure 1 and Figure 2 As shown, the adjustment device of the automobile rearview mirror of this embodiment includes a planetary gear mechanism connected to a driving device. The driving device of this embodiment is a driving motor 1. The planetary gear mechanism includes a sun gear 4, a planetary gear 5, a planetary carrier 6 and a ring gear 7. The ring gear 7 is provided with an outer ring gear and is equipped with a ring gear driven gear 12 meshing with the outer ring gear. The ring gear driven gear 12 is connected to a first worm gear transmission mechanism 8, and the planetary carrier 6 is connected to a second worm gear transmission mechanism 9. Braking devices are provided on the first worm gear transmission mechanism 8 and the second worm gear transmission mechanism 9, and a first direction rotating gear is equipped with the first worm gear transmission mechanism 8 and a second direction rotating gear is equipped with the second worm gear transmission mechanism 9. The first direction rotating gear and the second direction rotating gear are both connected to a housing where the rearview mirror is mounted.

[0031] Furthermore, the output shaft of the driving motor 1 is a driving worm 2 , and is provided with a driven worm wheel 3 matched with the driving worm 2 , and the driven worm wheel 3 is connected to the sun wheel 4 through a shaft.

[0032] The adjusting device of the present embodiment cleverly utilizes the planetary gear mechanism, and provides an outer ring gear and a ring gear driven wheel, cooperates with the first worm gear transmission mechanism and the second worm gear transmission mechanism, utilizes the first rotating gear and the second rotating gear to form axial movement in two directions, and realizes the action requirements of the entire adjusting device and the rearview mirror; braking devices are provided on the first worm gear transmission mechanism and the second worm gear transmission mechanism, when the first worm gear transmission mechanism is braked, the ring gear driven gear and the ring gear are braked, the driving device drives the planetary wheel to rotate and revolve, and drives the planetary carrier and the second worm gear transmission mechanism to rotate, realizes the rotation of the second rotating gear, and realizes the second direction adjustment of the rearview mirror; conversely, when the second worm gear transmission mechanism is braked, the planetary carrier is braked, the revolution of the planetary wheel is limited, the driving device drives the planetary wheel to rotate and the ring gear to rotate, drives the first worm gear transmission mechanism to rotate, realizes the rotation of the first rotating gear and the second direction adjustment of the rearview mirror, the entire device only needs one driving device to realize the adjustment of the rearview mirror in two directions, the entire adjusting device has a simple structure and a small volume, is conducive to controlling assembly accuracy and assembly quality, and controls costs. Example 2

[0033] like Figure 1 and Figure 2 As shown, according to the adjustment device of the automobile rearview mirror described in Example 1, in this embodiment, the first worm gear transmission mechanism 8 is equipped with a horizontal axis rotation gear 11, and the second worm gear transmission mechanism 9 is equipped with a vertical axis rotation gear 10. On the contrary, the first worm gear transmission mechanism 8 can also be equipped with a vertical axis rotation gear 10, and the second worm gear transmission mechanism 9 can be equipped with a horizontal axis rotation gear 11 to achieve rotation adjustment of the rearview mirror in two directions.

[0034] Furthermore, the first worm gear transmission mechanism 8 includes a first transmission worm 801 disposed on the ring gear driven gear 12, and a first worm tooth 802 is provided on the first transmission worm 801, and the horizontal axis rotating gear 11 is matched with the first worm tooth 802 to form a worm gear structure.

[0035] Furthermore, the second worm gear transmission mechanism 9 includes a second transmission worm 901 disposed on the planet carrier 6, and a second worm tooth 902 is disposed on the second transmission worm 901, and the vertical shaft gear 10 is matched with the second worm tooth 902 to form a worm gear structure.

[0036] like Figure 2 As shown, the first transmission worm 801 is arranged on the axis center line of the ring gear driven gear 12, and the second transmission worm 901 is arranged on the axis center line of the planet carrier 6.

[0037] The adjusting device of this embodiment combines a worm gear mechanism with a planetary gear mechanism, and utilizes the worm gear mechanism's compact structure, large transmission ratio, smooth operation, low noise and self-locking performance, thereby further simplifying the structure, reducing the size of the entire adjusting device, ensuring the movement accuracy of the rearview mirror, and ensuring stable performance after long-term operation. Example 3

[0038] like Figure 1 and Figure 2 As shown, according to the adjustment device of the automobile rearview mirror described in Example 1 or Example 2, the braking device of this embodiment includes a solenoid valve, a spring and a brake disc, and friction discs are respectively provided on the first transmission worm 801 and the second transmission worm 901.

[0039] Specifically, the braking device on the first transmission worm 801 includes a first solenoid valve 806, a first spring 805, a first transmission friction disc 804 and a first transmission brake disc 803 arranged in sequence from the end, and the braking device on the second transmission worm 901 includes a first solenoid valve 906, a first spring 905, a first transmission friction disc 904 and a first transmission brake disc 903 arranged in sequence from the end.

[0040] By controlling the on and off of the solenoid valve, the brake disc and the friction disc are brought into contact or separated, thereby achieving or stopping braking, controlling the rotation or stopping of the first transmission worm and the second transmission worm, and achieving the steering of the entire adjustment device, which plays a key role in achieving precise adjustment of the position of the car's rearview mirror. Example 4

[0041] like Figure 1 and Figure 2 As shown, according to the adjustment device for the rearview mirror of the automobile described in one of the first to third embodiments, the vertical axis rotating gear 10 of this embodiment is connected with a support 15, and the adjustment device components of the rearview mirror of the automobile are arranged in the housing, and the support 15 is connected with the housing by a ball joint. The support is used to place the entire adjustment device on the automobile, and the support is connected with the housing by a ball joint to facilitate the folding and unfolding of the housing and the rearview mirror.

[0042] Furthermore, the housing includes an inner housing 13 and an outer housing 14, the inner housing 13 and the outer housing 14 are connected by a ball joint, the horizontal axis rotating gear 11 is arranged on the outer housing 14, and the other adjustment device components of the automobile rearview mirror are arranged in the inner housing 13, the inner housing 13 and the support 15 are connected by a ball joint, and the rearview mirror lens is installed on the outer housing 14. The horizontal axis rotating gear is arranged in the outer housing, and the inner housing and the outer housing are connected by a ball joint. When the horizontal axis rotating gear rotates to drive the rearview mirror to pitch, there is no need for other components in the inner housing to move, which reduces wear and tear, and at the same time can reduce the gap between the rearview mirror housing and the lens, improve sealing, reduce dust entry, and ensure performance. Example 5

[0043] like Figure 1 and Figure 2 As shown, the automobile rearview mirror of this embodiment includes the adjustment device of the automobile rearview mirror described in one of Embodiments 1 to 4. Example 6

[0044] like Figure 1 and Figure 2 As shown, when the adjusting device of the automobile rearview mirror of one of the embodiments 1 to 4 is used for adjusting the automobile rearview mirror, the following steps are included:

[0045] A. Determine the adjustment direction of the rearview mirror. If the mirror is to be rotated in the first direction, activate the brake device on the second worm gear mechanism. If the mirror is to be rotated in the second direction, activate the brake device on the first worm gear mechanism.

[0046] B. Start the driving device. If the first worm gear transmission mechanism is braked, the planetary wheel rotates and revolves, driving the planetary carrier and the second worm gear transmission mechanism to rotate, thus realizing the second rotation of the rearview mirror;

[0047] C. In step B, if the second worm gear mechanism is braked, the planetary gear can only rotate on its own, and the ring gear drives the ring gear driven gear to rotate, thereby realizing the rotation of the first worm gear mechanism and realizing the first direction rotation of the rearview mirror.

Claims

1. An adjustment device for a rearview mirror of a vehicle, characterized in that: It includes a planetary gear mechanism connected to a driving device, the planetary gear mechanism includes a sun gear, a planetary gear, a planetary carrier and a ring gear, the ring gear is provided with an outer ring gear, and is equipped with a ring gear driven gear meshing with the outer ring gear, the ring gear driven gear is connected to a first worm gear transmission mechanism, the planetary carrier is connected to a second worm gear transmission mechanism, a braking device is provided on the first worm gear transmission mechanism and the second worm gear transmission mechanism, and a first direction rotating gear is equipped with the first worm gear transmission mechanism and a second direction rotating gear is equipped with the second worm gear transmission mechanism, the first direction rotating gear and the second direction rotating gear are both connected to a housing for accommodating a rearview mirror.

2. The adjusting device for a rearview mirror of a vehicle according to claim 1, characterized in that: The first worm gear transmission mechanism is provided with a horizontal axis rotating gear, and the second worm gear transmission mechanism is provided with a vertical axis rotating gear.

3. The adjusting device for a rearview mirror of a vehicle according to claim 2, characterized in that: The first worm gear transmission mechanism includes a first transmission worm gear arranged on the axis of the ring gear driven gear, and the first transmission worm gear is provided with a first worm gear tooth. The horizontal axis rotating gear and the first worm gear tooth are matched to form a worm gear structure.

4. The adjusting device for a rearview mirror of a vehicle according to claim 3, characterized in that: The second worm gear transmission mechanism includes a second transmission worm gear disposed on the axis of the planet carrier, and the second transmission worm gear is provided with second worm gear teeth. The vertical shaft gear and the second worm gear teeth are matched to form a worm gear structure.

5. The adjusting device for a rearview mirror of a vehicle according to claim 4, characterized in that: The braking device comprises a solenoid valve, a spring and a brake disc, and corresponding friction discs are respectively arranged on the first transmission worm and the second transmission worm.

6. The adjusting device for a rearview mirror of a vehicle according to claim 5, characterized in that: The vertical axis rotating gear is connected with a support, and the adjusting device component of the automobile rearview mirror is arranged in the shell, and the support is connected with the shell by a ball joint.

7. The adjusting device for a rearview mirror of a vehicle according to claim 6, characterized in that: The shell comprises an inner shell and an outer shell, the inner shell is connected to the outer shell by a ball joint, the horizontal axis rotating gear is arranged on the outer shell, the remaining adjustment device components of the automobile rearview mirror are arranged in the inner shell, the inner shell is connected to the support by a ball joint, and the rearview mirror lens is installed on the outer shell.

8. The adjusting device for a rearview mirror of a vehicle according to claim 7, characterized in that: The driving device comprises a driving motor, the output shaft of which is connected with a driving worm, and a driven worm wheel is arranged with the driving worm, and the output shaft of the driven worm wheel is connected with the sun wheel of the planetary gear mechanism.

9. A car rearview mirror, characterized in that: The invention comprises an adjustment device for a vehicle rearview mirror as claimed in any one of claims 1 to 8.

10. A method for adjusting a rearview mirror of a vehicle, characterized in that: When the adjusting device for a rearview mirror of a vehicle as claimed in any one of claims 1 to 7 is used for adjusting the rearview mirror of the vehicle, the following steps are included: A. Determine the adjustment direction of the rearview mirror. If the mirror is to be rotated in the first direction, activate the brake device on the second worm gear mechanism. If the mirror is to be rotated in the second direction, activate the brake device on the first worm gear mechanism. B. Start the driving device. If the first worm gear transmission mechanism is braked, the planetary wheel will rotate and revolve, driving the planetary carrier and the second worm gear transmission mechanism to rotate, thus realizing the second rotation of the rearview mirror; C. In step B, if the second worm gear mechanism is braked, the planetary gear can only rotate on its own, and the ring gear drives the ring gear driven gear to rotate, thereby realizing the rotation of the first worm gear mechanism and realizing the first direction rotation of the rearview mirror.

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