A shaft support device for a vehicle actuator, rearview mirror, and vehicle.

Abstract

This utility model provides a shaft support device for a vehicle actuator, rearview mirror, and vehicle. The shaft support device includes a rotating shaft, a mounting base, and a housing. One end of the housing has a mounting hole arranged along a second center line. The rotating shaft passes through the mounting hole along the second center line and is detachably connected to one end of the mounting base.

Description

[0001] This application claims priority to Chinese Utility Model Patent Application No. 202520623073.X, filed on April 3, 2025, and incorporates the entire contents of the aforementioned patent application as part of this application. Technical Field

[0002] This utility model relates to the field of automotive technology, specifically to an actuator, a rearview mirror, and a vehicle. Background Technology

[0003] Vehicle rearview mirrors are typically fixed to the sides of the vehicle body, and their angle adjustment mainly relies on manual or electric operation. With the development of the automotive industry and technological advancements, higher demands are placed on the functionality and flexibility of rearview mirrors. Drivers have varying needs for rearview mirror visibility under different driving conditions (such as city driving, highway cruising, and night driving), and each driver's body size and seating posture also differ; these factors all affect the effective use of rearview mirrors. Furthermore, in inclement weather or special road conditions, a fixed viewing angle may not meet the requirements for safe driving.

[0004] To meet the requirements of safe driving, rearview mirrors that can rotate forward and backward as well as left and right have appeared on the market. However, they have the problem of unstable operation.

[0005] On the other hand, how to conveniently and stably assemble and maintain the actuator is also an urgent problem to be solved. Utility Model Content

[0006] The purpose of this invention is to provide a shaft support device for vehicle actuators, rearview mirrors, and vehicles, in order to solve the problems mentioned in the background art or other similar problems.

[0007] In a first aspect, this utility model provides a shaft support device, including a rotating shaft, a mounting base, and a housing, wherein one end of the housing has a mounting hole arranged along a second center line, the rotating shaft passes through the mounting hole along the second center line, and is detachably connected to one end of the mounting base.

[0008] According to an embodiment of the present invention, the other end of the mounting base has a guide sleeve arranged along the second center line. The guide sleeve includes an upper half and a lower half, wherein the upper half and the lower half are misaligned in the axial direction of the guide sleeve. The other end of the housing has a guide shaft arranged along the second center line, and the guide shaft is inserted into the guide sleeve from between the upper half and the lower half.

[0009] A second aspect of the present invention provides an actuator for a vehicle that includes the shaft support device provided in the first aspect of the present invention.

[0010] According to an embodiment of the present invention, the rotating shaft is arranged along the second center line, the rotating shaft is part of the swing arm, the swing arm is arranged on the sub-shaft assembly, and the actuator further includes a second drive assembly, wherein the sub-shaft assembly cooperates with the second drive assembly to drive the housing of the rearview mirror to rotate around the second center line.

[0011] According to an embodiment of the present invention, the actuator further includes a spindle assembly and a first drive assembly. The spindle assembly is connected to the first drive assembly in a transmission manner. The spindle assembly is used to convert the rotational motion of the first drive assembly itself into a rotational motion in which the first drive assembly drives the housing of the actuator to rotate around the first center line. The first center line and the second center line are not parallel to each other.

[0012] According to an embodiment of the present invention, the secondary shaft assembly further includes: a secondary shaft; a second rotary support, sleeved on the secondary shaft and connected to the second drive assembly for transmission, the second rotary support being used to rotate around a third center line using the torque output by the second drive assembly, the third center line being non-parallel to the second center line; the swing arm further includes an engaging portion, the engaging portion engaging with the second rotary support for transmission, the engaging portion using the torque output by the second rotary support to swing around the second center line, thereby driving the outer casing to rotate around the second center line.

[0013] According to an embodiment of the present invention, the secondary shaft assembly further includes a gap-eliminating element, which is sleeved on the outside of the secondary shaft and abuts against the second rotary support in the axial direction of the secondary shaft. The gap-eliminating element includes a first guide slope that cooperates with the housing and a second guide slope that cooperates with the swing arm. The first guide slope and the second guide slope are used to guide the swing arm to move toward the direction close to the third center line when the second rotary support is compressed, so as to eliminate the gap between the meshing part and the second rotary support.

[0014] According to an embodiment of the present invention, the gap elimination element further includes a first limiting end face and a second limiting end face, and the housing further includes: a first positioning platform, including a first positioning inclined surface and a first supporting end face, wherein the first positioning inclined surface is used to cooperate with the first guiding inclined surface, and the first supporting end face is used to cooperate with the first limiting end face; the swing arm further includes a first positioning protrusion, wherein the first positioning protrusion has a sliding inclined surface that cooperates with the second guiding inclined surface and a positioning end face that cooperates with the second limiting end face, wherein the first guiding inclined surface is in contact with the first positioning inclined surface, and the first supporting end face and the first limiting end face have a first gap in the axial direction of the secondary shaft; and the second guiding inclined surface is in contact with the sliding inclined surface, and the second limiting end face and the positioning end face have a second gap in the axial direction of the secondary shaft.

[0015] According to an embodiment of the present invention, the housing further includes a second positioning platform, and the rotating shaft further includes a second positioning protrusion. There is a gap between the first positioning protrusion and the second positioning protrusion, and the second positioning platform is inserted into the gap in a direction parallel to the second center line.

[0016] According to an embodiment of the present invention, the second rotary support includes a first gear and a second gear that abut against each other along the longitudinal centerline and can disengage from each other in the circumferential direction. The swing arm meshes with the first gear, and the output end of the second drive assembly meshes with the second gear. The gap elimination element further has a fitting portion, the fitting portion has a fitting surface, and the fitting surface is at least partially in contact with the inner wall of the second gear.

[0017] According to an embodiment of the present invention, the rotating shaft and the meshing part are an integral structure.

[0018] A third aspect of the present invention also provides a rearview mirror, comprising: a housing; and an actuator according to a second aspect of the present invention disposed within the housing.

[0019] A fourth aspect of this utility model provides a vehicle including the rearview mirror provided in the third aspect of this utility model. Attached Figure Description

[0020] The above and other objects, features, and advantages of this utility model will become clearer from the following description of embodiments of the present utility model with reference to the accompanying drawings. Obviously, the drawings described below are some embodiments of the present utility model, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0021] Figure 1A cross-sectional view of a rearview mirror according to an embodiment of the present invention is shown schematically.

[0022] Figure 2 A partial perspective view of a rearview mirror according to an embodiment of the present invention is shown schematically.

[0023] Figure 3 A partial cross-sectional view of a rearview mirror according to an embodiment of the present invention is shown schematically.

[0024] Figure 4 A perspective view of the main shaft assembly and the first drive assembly of a rearview mirror according to an embodiment of the present invention is shown schematically.

[0025] Figure 5(a) schematically shows a perspective view of the sub-shaft assembly and the second drive assembly of a rearview mirror according to an embodiment of the present invention.

[0026] Figure 5(b) schematically shows a perspective view of the sub-shaft assembly and the second drive assembly of another rearview mirror according to an embodiment of the present invention.

[0027] Figure 6 A schematic perspective view of the drive ring, sliding ring, and main shaft of a rearview mirror according to an embodiment of the present invention is shown.

[0028] Figure 7 A perspective view of the first and second gears of a rearview mirror according to an embodiment of the present invention is shown schematically.

[0029] Figure 8 A partial cross-sectional view of a rearview mirror according to another embodiment of the present invention is shown schematically.

[0030] Figure 9 A perspective view of the mounting base according to an embodiment of the present invention is shown schematically.

[0031] Figure 10 A partial cross-sectional view of a rearview mirror according to another embodiment of the present invention is shown schematically.

[0032] Figure 11 yes Figure 9 Enlarged view of a partial cross-sectional view of the center rearview mirror.

[0033] Figure 12 A partial cross-sectional view of a rearview mirror according to another embodiment of the present invention is shown schematically.

[0034] Figure 13 The diagram schematically illustrates an assembly of a rearview mirror housing and an elastic component according to an embodiment of the present invention.

[0035] Figure 14A schematic diagram of an elastic member according to an embodiment of the present invention is shown.

[0036] Figure 15 A partial cross-sectional view of a rearview mirror according to another embodiment of the present invention is shown schematically.

[0037] Figure 16 The schematic diagram illustrates the structure of the sliding ring and drive ring of the first rotary support in the meshing state according to an embodiment of the present invention.

[0038] Figure 17 The schematic diagram illustrates the structure of the sliding ring and drive ring of the first rotary support in the disengaged state according to an embodiment of the present invention.

[0039] Figure 18 The diagram illustrates the structure of the first gear and the second gear in the meshing state according to an embodiment of the present invention.

[0040] Figure 19 The schematic diagram illustrates the structure of the first gear and the second gear in the disengaged state according to an embodiment of the present invention.

[0041] Figure 20 A perspective view of a gap elimination element according to an embodiment of the present invention is shown schematically.

[0042] Figure 21 A perspective view of a swing arm according to an embodiment of the present invention is shown schematically.

[0043] Figure 22 A partial perspective view of the lower housing according to an embodiment of the present invention is shown schematically.

[0044] Figure 23 A partial cross-sectional view of an actuator according to an embodiment of the present invention is shown schematically. Detailed Implementation

[0045] To make the aforementioned objects, features, and advantages more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the present invention.

[0046] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0047] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0048] When using expressions such as "at least one of A, B, and C," it should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art (e.g., "having at least one of A, B, and C" should include, but is not limited to, having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0049] The actuator of the present invention will now be described in detail with reference to the accompanying drawings.

[0050] like Figures 1 to 23 As shown, the actuator 100 of this embodiment can be disposed within the housing 800 of a vehicle's rearview mirror. The housing of the rearview mirror may include an upper housing (not shown) and a lower housing. A lens of the rearview mirror can be mounted on the upper housing. The lens may or may not be part of the rearview mirror of this embodiment. The lower housing is detachably connected to the upper housing. The actuator 100 can be mounted on the lower housing. Further, the actuator housing 700 includes at least an upper housing 701 and a lower housing 702. Specifically, the actuator housing 700 can be mounted on the rearview mirror housing 800. The housing 800 may have a longitudinal centerline and a transverse centerline. The longitudinal centerline can serve as the rotation center of the rearview mirror in the horizontal direction (referred to as the in & out direction), and the transverse centerline can serve as the rotation center of the rearview mirror in the vertical direction (referred to as the up & down direction). For ease of distinction, the rotation of the rearview mirror in the vertical direction around the transverse centerline can be referred to as oscillation.

[0051] like Figure 3As shown, actuator 100 defines a longitudinal centerline X1 and a lateral centerline X2 that are identical to the rearview mirror housing. The longitudinal centerline X1 can serve as the rotation center of the rearview mirror in the horizontal direction (referred to as the in & out direction), and the lateral centerline X2 can serve as the rotation center (also referred to as the swing center) of the rearview mirror in the vertical direction (referred to as the up & down direction). For ease of description, the longitudinal centerline X1 can also be referred to as the first centerline, and the lateral centerline X2 can also be referred to as the second centerline.

[0052] The actuator 100 includes a main shaft assembly 200, a secondary shaft assembly 300, a first drive assembly 400, and a second drive assembly 500. The first drive assembly 400 and the second drive assembly 500 are independent of each other. The first drive assembly 400 cooperates with the main shaft assembly 200 to drive the rearview mirror housing to rotate about a first centerline X1. The second drive assembly 500 cooperates with the secondary shaft assembly 300 to drive the rearview mirror housing to rotate about a second centerline X2. It can be seen that the first centerline X1 and the second centerline X2 are not parallel. In some embodiments, the first centerline X1 and the second centerline X2 are perpendicular to each other.

[0053] The main spindle assembly 200 is disposed along the first center line X1, meaning that the axis of the main spindle assembly 200 can coincide with the first center line X1. The secondary spindle assembly 300 can be disposed along the third center line X3. In some embodiments, the first center line X1 and the third center line X3 can be parallel to each other.

[0054] In an embodiment of this utility model, the spindle assembly 200 is connected to the first drive assembly 400 and is configured to convert the rotational motion of the first drive assembly 400 itself into a rotational motion in which the first drive assembly 400 drives the housing 800 to rotate around the first center line X1.

[0055] The spindle assembly 200 includes at least a spindle 201 and a first rotary support 210. A first centerline X1 can be considered as the central axis of the spindle 201, which can be fixed to a base that can be fixedly connected to a cantilever fixed to the vehicle body, thereby achieving support and fixation of the spindle 201.

[0056] like Figure 2 , Figure 3 , Figure 4As shown, the first rotary support 210 is sleeved outside the main shaft 201 and is connected to the first drive assembly 400 for transmission, and is used to support the rotational movement of the rearview mirror housing about the longitudinal centerline X1 (i.e., rotational movement in the in & out directions). The first rotary support 210 can remain circumferentially stationary relative to the main shaft 201 without rotating relative to the main shaft 201. In this case, the first rotary support 210 and the main shaft 201 can be regarded as an integral structure that cannot rotate about the longitudinal centerline X1.

[0057] like Figure 2 , Figure 3 As shown in Figures 5(a) and 5(b), the secondary shaft assembly 300 includes a secondary shaft 301 disposed along a third centerline, a second rotary support 310, and a swing arm 320. The third centerline X3 can be considered as the central axis of the secondary shaft 301.

[0058] The second rotary support 310 is sleeved outside the sub-shaft 301 and is connected to the second drive assembly 500 for transmission, and is used to support the rotational movement (i.e., the swinging movement in the up & down direction) of the rearview mirror housing around the second center line X2.

[0059] As shown in Figures 5(a) and 5(b), the swing arm 320 includes an engagement portion 3201 and a rotating shaft portion 3202 (i.e., a rotating shaft). The rotating shaft portion 3202 and the engagement portion 3201 are integrally formed. The engagement portion 3201 of the swing arm 320 engages with the second rotary support 310 for transmission. The rotating shaft portion 3202 of the swing arm 320 is arranged along the second center line X2 and is connected to the actuator housing 700. The actuator housing 700 drives the rearview mirror housing 800 to rotate around the second center line X2.

[0060] like Figure 2 , Figure 4 As shown, the first drive assembly 400 is disposed within the housing 700 and can be connected to the outer casing 800. The first rotary support 210 engages with the output end of the first drive assembly 400 to support the first drive assembly 400 and the outer casing 800 to rotate around the longitudinal centerline X1. Specifically, when the output torque of the first drive assembly 400 is activated, since the first rotary support 210 remains circumferentially stationary relative to the main shaft 201 and does not rotate relative to the main shaft 201, the first drive assembly 400, which engages with the first rotary support 210, will rotate around the first rotary support 210 and simultaneously rotate the outer casing 800 together, thereby realizing the rotation of the rearview mirror around the longitudinal centerline X1. This adjustment of the rearview mirror can be referred to as electric adjustment in the in & out directions.

[0061] like Figure 2As shown in Figures 5(a) and 5(b), the second drive assembly 500 is disposed within the housing 700 and can be connected to the outer casing 800. The second rotary support 310 engages with the output end of the second drive assembly 500 at one location and with the swing arm 320 at the other. Thus, the torque from the second drive assembly 500 is transmitted to the swing arm 320 via the second rotary support 310, causing the outer casing 800 to swing around the second centerline X2. Specifically, when the second drive assembly 500 outputs torque, since the second rotary support 310 can rotate relative to the secondary shaft 301 around the third centerline X3, the second rotary support 310 will rotate around the third centerline X3 due to the torque, and the swing arm 320, which engages with the second rotary support 310, will rotate around the transverse centerline X2 as the second rotary support 310 rotates. Furthermore, the swing arm 320 can swing around the second centerline X2 along with the housing 800, thereby realizing the rotation of the rearview mirror around the second centerline X2. That is, the secondary shaft assembly 300 can use the torque output by the second drive assembly 500 to perform rotational motion around the third centerline X3 and swinging motion around the second centerline X2, and drive the housing 800 to rotate around the second centerline X2. In other words, the second rotational support 310, sleeved outside the secondary shaft 301, is connected to the second drive assembly 500 for transmission. The second rotational support 310 is used to perform rotational motion around the third centerline X3 using the torque output by the second drive assembly 500; the engaging part 3201 of the swing arm engages with the second rotational support 310 for transmission. The engaging part 3201 uses the torque output by the second rotational support 310 to perform swinging motion around the second centerline X2, thereby driving the housing 800 to rotate around the second centerline X2. This adjustment of the rearview mirror can be called electric adjustment in the up and down directions.

[0062] In this embodiment, the first drive assembly 400 and the second drive assembly 500 are housed in the same housing, and the first rotary support 210 for supporting rotational motion and the second rotary support 310 for supporting oscillating motion are respectively sleeved on two parallel main shafts. Because a dual-motor, dual-axis drive is used to control the rotation of the actuator 100 in both in-and-out and up-and-down directions, the movements in the two directions are relatively independent and less prone to interference. This simplifies the rearview mirror design, achieves compact structural integration, improves the operational stability of the actuator 100, and facilitates manufacturing and maintenance.

[0063] like Figure 6As shown, in some embodiments, the first rotary support 210 includes a sliding ring 211 and a drive ring 212 that abut against each other along a first centerline X1 and are detachably abutting each other in the circumferential direction. The sliding ring 211 is slidable along the first centerline X1 and is prevented from rotating relative to the main shaft 201 about the first centerline X1. The drive ring 212 engages with the output end of the first drive assembly 400. The drive ring 212 responds to different torques received from the first drive assembly 400 and selectively remains fixed or rotatable relative to the sliding ring 211 in the circumferential direction.

[0064] The rearview mirror in this embodiment has both electric adjustment function in the in and out directions and manual adjustment function in the in and out directions.

[0065] When electric adjustment is required, the first drive assembly 400 is activated. When the first drive assembly 400 outputs torque (referred to as the first electric torque), the first electric torque is small and insufficient to drive the drive ring 212 to disengage from the sliding ring 211 in the circumferential direction. That is, at this time, the drive ring 212 remains fixed relative to the sliding ring 211 in the circumferential direction and cannot rotate. Therefore, the first drive assembly 400, which is engaged with the drive ring 212, will rotate around the drive ring 212 and rotate with the outer casing 800 at the same time, thereby realizing the electric rotation of the rearview mirror around the longitudinal center line X1, thus realizing the electric adjustment of the rearview mirror in the in & out directions.

[0066] When manual adjustment is required, a rotational pushing force (referred to as the first manual torque) is applied to the housing 800 by hand. This first manual torque is transmitted to the drive ring 212 via the first drive assembly 400 connected to the housing 800. This first manual torque is large enough to drive the drive ring 212 to disengage from the sliding ring 211 in the circumferential direction. That is, at this time, the drive ring 212 can rotate relative to the sliding ring 211 in the circumferential direction. Therefore, the housing 800, the first drive assembly 400 and the drive ring 212 rotate together around the main axis 201, thereby realizing the manual rotation of the rearview mirror around the first center line X1, thus realizing the manual adjustment of the rearview mirror in the in & out directions.

[0067] like Figure 16 and Figure 17As shown, in one feasible technical solution, the drive ring 212 has at least one first boss 2121 protruding along the first center line X1 toward the sliding ring 211, and the sliding ring 211 has at least one second boss 2111 protruding along the first center line X1 toward the drive ring 212. In the circumferential direction, the first boss 2121 and the second boss 2111 can disengage and abut against each other. When the first boss 2121 and the second boss 2111 abut against each other in the circumferential direction, the drive ring 212 is fixed relative to the sliding ring 211 in the circumferential direction and cannot rotate. When the first boss 2121 and the second boss 2111 disengage in the circumferential direction, the drive ring 212 can rotate relative to the sliding ring 211. Thus, by providing the first boss 2121 and the second boss 2111, the drive ring 212 and the sliding ring 211 can disengage and abut against each other in the circumferential direction.

[0068] like Figure 6 , Figure 16 and Figure 17 As shown, exemplarily, the drive ring 212 has a plurality of first protrusions 2121 spaced apart around the longitudinal center line X1, and the sliding ring 211 has a plurality of second protrusions 2111 spaced apart around the longitudinal center line X1. When the plurality of first protrusions 2121 and the plurality of second protrusions 2111 are engaged, the drive ring 212 and the sliding ring 211 are relatively fixed in the circumferential direction. When the plurality of first protrusions 2121 and the plurality of second protrusions 2111 are disengaged, the drive ring 212 can rotate relative to the sliding ring 211.

[0069] Furthermore, at least one of the first boss 2121 and the second boss 2111 is provided with an inclined side surface for guiding the first boss 2121 to disengage from the abutment of the second boss 2111 in the circumferential direction. At least one of the first boss 2121 and the second boss 2111 is provided with a horizontal end face that allows the first boss 2121 to rotate relative to the second boss 2111. Thus, when the drive ring 212 is driven by the second preset torque, the first boss 2121 located between the two second bosses 2111 can slide under the guidance of the inclined side surface to contact one of the second bosses 2111 through the horizontal end face (i.e., the second boss 2111 is lifted by the first boss 2121 and contacts the upper end face of the first boss 2121), and can continue to rotate along the horizontal end face until the first boss 2121 falls back between the second boss 2111 and the third second boss 2111.

[0070] The inclined side is tilted at an angle relative to the longitudinal centerline X1, the angle being greater than 0 and less than 90°, and the horizontal end face can be perpendicular to the first centerline X1.

[0071] For example, each first boss 2121 has two opposite sides in the circumferential direction that are inclined sides 2122, and the end face of each first boss 2121 facing the sliding ring 211 is a horizontal end face 2123; each second boss 2111 has two opposite sides in the circumferential direction that are inclined sides 2112, and the end face of each second boss 2111 facing the sliding ring 211 is a horizontal end face 2113.

[0072] Optionally, the outer wall of the drive ring 212 is provided with a first tooth 2124, and the output end of the first drive assembly 400 meshes with the first tooth 2124. Each tooth of the first tooth 2124 is an oblique tooth that is inclined relative to the longitudinal centerline X1.

[0073] Optionally, at least one sliding guide protrusion 2011 is provided on the outer surface of the main shaft 201. The sliding guide protrusion 2011 extends along the first centerline X1. At least on the inner surface of the sliding ring 211, a sliding guide groove 2013 is provided to cooperate with the plurality of sliding guide protrusions 2011, so as to at least facilitate the positioning and limiting of the sliding ring 211 on the main shaft 201, and allow the sliding ring 211 to be stationary in the circumferential direction and to slide in the longitudinal direction relative to the main shaft 201. This achieves selective prevention of rotation of the sliding ring 211 relative to the main shaft 201 about the longitudinal centerline X1 based on different torques output by the first drive assembly 400, and allows the sliding ring 211 to slide relative to the main shaft 201 along the longitudinal centerline X1.

[0074] Optionally, the sliding guide protrusion 2011 may narrow in the direction extending along the first center line X1. Because the sliding guide protrusion 2011 narrows in the direction extending along the first center line X1, the drive ring 212 and the sliding ring 211 can fit with the sliding guide protrusion 2011 without clearance, enhancing stability.

[0075] Optionally, the outer surface of the spindle 201 may be provided with a plurality of sliding guide protrusions 2011, which are spaced apart around the central axis of the spindle; at least the inner surface of the sliding ring 211 is provided with a plurality of sliding guide grooves 2013 that mate with the plurality of sliding guide protrusions 2011. The number of sliding guide protrusions 2011 is the same as the number of sliding guide grooves 2013, so as to enhance the positioning and limiting of the sliding ring 211 on the spindle 201.

[0076] As shown in Figure 5(a), Figure 5(b) and Figure 7As shown, in some embodiments, the second rotary support 220 includes a first gear 311 and a second gear 312 that abut against each other along a longitudinal centerline X1 and are detachably abutting each other in the circumferential direction. A rocker arm 320 meshes with the first gear 311, and the output end of the second drive assembly 500 meshes with the second gear 312. The first gear 311, in response to torque received from the second drive assembly 500 via the second gear 312 or torque received from the rocker arm 320, can selectively remain fixed or rotatable relative to the second gear 312 in the circumferential direction.

[0077] The rearview mirror in this embodiment not only has an electric adjustment function in the up and down directions, but also a manual adjustment function in the up and down directions.

[0078] When electric adjustment is required, the second drive assembly 500 is activated, and the second drive assembly 500 outputs torque (referred to as the second electric torque). This second rotational torque is small and insufficient to drive the second gear 312 to disengage from the first gear 311 in the circumferential direction. At this time, the first gear 311 and the second gear 312 are relatively fixed in the circumferential direction and can rotate as a whole around the third center line X3. Therefore, the swing arm 320 meshing with the first gear 311 will drive the housing 800 to swing around the second center line X2 through the rotating shaft 3202, thereby realizing the electric swing of the rearview mirror around the second center line X2, thus realizing the electric adjustment of the rearview mirror in the up and down directions.

[0079] When manual adjustment is required, a swinging force (referred to as the second manual torque) is applied to the housing 800 by hand. This second manual torque is transmitted to the first gear 311 via the swing arm 320 connected to the housing 800. The second manual torque is large enough to drive the first gear 311 to disengage from the second gear 312 in the circumferential direction. At this time, the first gear 311 can rotate relative to the second gear 312 in the circumferential direction, thereby allowing the swing arm 320 to swing. Therefore, the housing 800 and the swing arm 320 swing together around the second center line X2, thereby realizing the manual swing of the rearview mirror around the second center line X2, thus realizing the manual adjustment of the rearview mirror in the up and down directions.

[0080] like Figure 7 , Figure 18 and Figure 19As shown, in one feasible technical solution, the first gear 311 has at least one third boss 3111 protruding towards the second gear 312 along the third center line X3, and the second gear 312 has at least one groove 3121 along the third center line X3 that engages with the third boss. In the circumferential direction, the third boss 3111 and the groove 3121 can disengage from each other. Specifically, when the third boss 3111 and the groove 3121 abut in the circumferential direction, the first gear 311 is fixed relative to the second gear 312 in the circumferential direction and can rotate with it; when the third boss 3111 and the groove 3121 disengage in the circumferential direction, the first gear 311 can rotate relative to the second gear 312. Thus, by providing the third boss 3111 and the groove 3121, the first gear 311 and the second gear 312 can disengage from each other in the circumferential direction.

[0081] like Figure 7 , Figure 18 and Figure 19 As shown, exemplarily, the first gear 311 has a plurality of third protrusions 3111 spaced around the third center line X3, and the second gear 312 has a plurality of grooves 3121 spaced around the third center line X3. When the plurality of third protrusions 3111 and the plurality of grooves 3121 mesh, the first gear 311 and the second gear 312 are relatively fixed in the circumferential direction. When the plurality of third protrusions 3111 and the plurality of grooves 3121 disengage, the first gear 311 can rotate relative to the second gear 312.

[0082] like Figure 7 , Figure 18 and Figure 19As shown, at least one of the third boss 3111 and the groove 3121 is provided with an inclined side surface for guiding the third boss 3111 to disengage from the top of the groove 3121 in the circumferential direction, and at least one of the third boss 3111 and the groove 3121 is provided with a horizontal end face that allows the third boss 3111 to rotate relative to the groove 3121. Therefore, when the swing arm 320 is driven by the second manual torque, since the contact surface between the swing arm 320 and the first gear 311 is curved, and the third boss 3111 and the groove 3121 are inclined on the side that abuts in the circumferential direction, the force F1 (circumferential direction) applied by the swing arm 320 to the second rotary support 310 can be decomposed into a first pressure F2 and a second pressure F3 that are perpendicular to each other. The first pressure F2 is consistent with the inclination angle of the inclined side, or it can be decomposed into a component force consistent with the inclination angle of the inclined side, so as to drive the first gear 311 to slide in the direction of disengaging from the groove of the second gear 312 under the guidance of the inclined side, until it contacts the horizontal end face of the second gear 312 (that is, the third boss 3111 disengages from the groove 3121 and contacts the upper end face of the second gear 312), and can continue to rotate along the horizontal end face until the third boss 3111 falls into the second groove 3121 again.

[0083] The inclined side is inclined at an angle relative to the first center line X1, the angle being greater than 0 and less than 90°, and the horizontal end face can be perpendicular to the first center line X1.

[0084] like Figure 7 , Figure 18 and Figure 19 As shown, by way of example, each third boss 3111 has two opposite sides in the circumferential direction that are inclined sides 3112, and the end face of each third boss 3111 facing the second gear 312 is a horizontal end face 3113; each groove 3121 has two opposite sides in the circumferential direction that are inclined sides 3122, and the end face of the second gear 312 facing the first gear 311 is a horizontal end face 3123.

[0085] In the examples shown in Figures 5(a) and 5(b), the first gear 311 is a spur gear and the rocker arm 320 is a face gear. The teeth of the meshing part 3201 are arranged in a fan shape and evenly distributed on the arc end of the rocker arm 320, thereby realizing the conversion of the rotational motion of the first gear 311 around the third center line X3 into the swing motion of the rocker arm 320 around the second center line X2.

[0086] The structural configuration of this utility model embodiment ensures that when the first gear 311 is driven by the second manual torque, after the first gear 311 is lifted (i.e. disengaged from the groove), it can still maintain engagement with the rocker arm 320.

[0087] Optionally, the secondary shaft assembly also includes a backlash elimination element 930, which is sleeved on the outside of the secondary shaft 301 and abuts against the second rotary support 310 in the axial direction of the secondary shaft 301. It can be understood that the axial direction of the secondary shaft 301 coincides with the direction of the third center line X3.

[0088] refer to Figures 20-23 As shown, the gap-eliminating element 930 includes a first guide slope 9301, a second guide slope 9302, a first limiting end face 9303, and a second limiting end face 9304. Specifically, the gap-eliminating element includes a first guide slope 9301 that mates with the housing, and a second guide slope 9302 that mates with the swing arm 320. The first guide slope 9301 and the second guide slope 9302 are used to guide the swing arm 320 to move toward the direction closer to the third center line X3 when the second rotary support 310 is compressed, so as to eliminate the gap between the engaging portion 3201 and the second rotary support 310.

[0089] The gap elimination element 930 also includes a first limiting end face 9303 and a second limiting end face 9304.

[0090] In an embodiment of this utility model, the lower housing 702 further includes a first positioning platform 7201 and a second positioning platform 7202, which are used to connect with the gap elimination element 930 and the swing arm 320 respectively.

[0091] Specifically, the first positioning platform 7201 includes a first positioning inclined surface 72011 and a first supporting end surface 72012. The first positioning inclined surface 72011 is used to cooperate with the first guiding inclined surface 9301, and the first supporting end surface 72012 is used to cooperate with the first limiting end surface 9303 to support the gap elimination element 930. The pivot portion 3202 of the swing arm 320 can be engaged with the second positioning platform 7202 to achieve positioning of the swing arm 320. For example, the pivot portion 3202 of the swing arm 320 may also include a first positioning protrusion 3203 and a second positioning protrusion 3204, with a gap between the first positioning protrusion 3203 and the second positioning protrusion 3204, the gap being used to engage with the second positioning platform 7202. That is, the second positioning platform 7202 is inserted into the gap in a direction parallel to the second center line X2.

[0092] Furthermore, the first positioning protrusion 3203 of the swing arm 320 has a sliding inclined surface 32031 that mates with the second guide inclined surface 9302 and a positioning end surface 32032 that mates with the second limiting end surface 9304. Optionally, the sliding inclined surface 32031 and the positioning end surface 32032 can be cylindrical surfaces or a part of a cylindrical surface.

[0093] The first guide slope 9301 is in contact with the first positioning slope 72011, and the first support end face 72012 and the first limiting end face 9303 have a first gap in the axial direction of the secondary shaft 301; and the second guide slope 9302 is in contact with the sliding slope 32031, and the second limiting end face 9304 and the positioning end face 32032 have a second gap in the axial direction of the secondary shaft.

[0094] In some embodiments, the countershaft assembly 300 further includes a spring member 302, which is disposed radially inside the second rotary support 310 and abuts against the second rotary support 310 along the third centerline X3. Specifically, the spring member 302 abuts against the first gear 311 so that a spring force can be applied to the first gear 311 and the second gear 312. Thus, the second rotary support is subjected to pressure from the spring member 302, and when the first gear 311 and the second gear 312 disengage, the first gear 311 must overcome the spring force of the spring member 302.

[0095] When the second rotary support 310 is compressed, the first guide slope 9301 can move along the first positioning slope 72011 of the lower housing 702, and the second guide slope 9302 can move along the sliding slope 32031 of the swing arm 320. At the same time, the swing arm 320 can move radially along the secondary shaft 301. Under the action of the elastic member 302, the second rotary support 310 can always maintain a compressed state. The use of the gap elimination element 930 can eliminate the gear backlash between the meshing part 3201 and the second rotary support 310, so that the meshing part 3201 and the second rotary support 310 can always fit together, thereby reducing the shaking of the lens bracket.

[0096] In some embodiments, the first positioning protrusion 3203 and the second positioning protrusion 3204 are connected by a positioning end face 3205. In a direction perpendicular to the axial direction of the secondary shaft 301, there is a gap between the positioning end face 3205 and the second positioning stage 7202, so as to allow the swing arm 320 to approach the second rotating support 310 when the second rotating support 310 is compressed.

[0097] Optionally, the second guide slope 9302 and the second limiting end face 9304 are cylindrical surfaces, and the sliding slope 32031 and the positioning end face 32032 are cylindrical surfaces that respectively cooperate with the second guide slope 9302 and the second limiting end face 9304, so as to facilitate the integral forming of the swing arm pivot part during processing and reduce the friction between the swing arm 320 and the gap elimination element 930 during relative movement.

[0098] Optionally, the gap-eliminating element 930 further includes a fitting portion 9305, which has a fitting surface 93051 that at least partially abuts against the inner wall of the second gear 312. In other words, the gap-eliminating element can be partially embedded into the second gear 312 through the fitting portion, thereby achieving positioning of the gap-eliminating element 930 on the second rotary support 310 and making the structural layout more compact.

[0099] Optionally, the housing 700 of the actuator 100 is connected to the housing 800 of the rearview mirror via a mounting base 600.

[0100] The first end of the housing 700 (i.e., the other end of the housing) and the first end of the mounting base 600 (i.e., the other end of the mounting base, such as...) Figure 8 The right end of the connector is rotatable. For example, as... Figure 8 and Figure 9 As shown, the right end of the mounting base 600 has a hollowed-out mounting shaft hole 601 to facilitate the assembly of the actuator 100. Furthermore, a semi-hollowed-out bushing structure D can be used to achieve a rotatable connection between the housing 700 and the mounting base 600, facilitating the opening and closing of the housing and the mounting base 600. Optionally, as... Figure 9 As shown, the mounting shaft hole 601 (i.e., guide sleeve 601) includes an upper part 611 and a lower part 612. The upper part 611 (i.e., upper sleeve 611) and the lower part 612 (i.e., lower sleeve 612) are offset in the axial direction of the mounting shaft hole to facilitate the assembly of the actuator 100 housing 700.

[0101] That is, the first end of the mounting base 600 has a guide sleeve 601 disposed along the second center line X2. The guide sleeve 601 includes an upper half-sleeve 611 and a lower half-sleeve 612, wherein the upper half-sleeve 611 and the lower half-sleeve 612 are misaligned in the axial direction of the guide sleeve 601. The other end of the housing 700 has a guide shaft 7022 disposed along the second center line X2. The guide shaft 7022 is inserted into the guide sleeve 601 between the upper half-sleeve 611 and the lower half-sleeve 612.

[0102] During assembly, the guide shaft 7022 is inserted into the upper half-sleeve 611 from above the lower half-sleeve 612, meaning that the two axial parts of the guide shaft 7022 are located in the lower half-sleeve 612 and the upper half-sleeve 611, respectively. Because the upper half-sleeve 611 and the lower half-sleeve 612 are staggered, with the upper half-sleeve 611 open upwards and the lower half-sleeve 612 open downwards, the guide shaft is easily inserted.

[0103] At the second end of the mounting base 600 (i.e., one end of the mounting base 600, such as...) Figure 8Since the length of the mounting base 600 is longer than the length of the lower housing 702 of the actuator, the second end of the housing 700 can be completely located within the second end of the mounting base 600, and the second end of the housing 700 (i.e., one end of the housing 700) is spaced apart from the second end of the mounting base 600. This space defines a receiving cavity on the mounting base 600. The housing 700 has a mounting hole, for example, defined by the upper housing 701 and the lower housing 702 of the actuator, the shape of which mates with the pivot portion 3202 of the swing arm 320. This allows the pivot portion 3202 of the swing arm to pass through the housing 700 along its axial direction and be detachably mounted in the receiving cavity, wherein the axis of the pivot portion (i.e., the pivot) of the swing arm 320 coincides with the second center line X2. In other words, one end of the housing 700 has a mounting hole along the second centerline X2, and the rotating shaft 3202 passes through the mounting hole along the second centerline X2 and is detachably connected to one end of the mounting base 600. It can be understood that the mounting base 600, the housing 700, and the rotating shaft 3202 can together constitute a shaft support device. In other embodiments, the rotating shaft 3202 can also be replaced by an independent rotating shaft, i.e., the shaft support device is constituted by an independent rotating shaft, the mounting base, and the housing. The housing and mounting base of this shaft support device can be flexibly connected during assembly and support tool-free quick insertion of the rotating shaft, greatly improving assembly efficiency; furthermore, the detachable connection characteristic of this device facilitates component replacement and maintenance.

[0104] In some embodiments, such as Figure 8 , Figures 10-11 As shown, a spring member 602 is also provided at the second end of the mounting base 600. The spring member 602 can be pre-assembled onto the second end of the mounting base 600. The spring member 602 is used to deform when the swing arm 320 is installed in the receiving cavity to facilitate installation, and to return to its original shape after the installation process is completed to limit the rotation shaft portion 3202. For example, the spring member 602 is deformable, thereby selectively stopping or allowing the rotation shaft portion 3202 to pass through, so that it can be placed in the receiving cavity. Specifically, during the installation of the rotation shaft portion 3202 of the swing arm into the receiving cavity, the rotation shaft portion 3202 begins to contact the spring member 602. Since the rotation shaft portion 3202 is rigid, as the contact time continues, it can push the spring member 602 to deform, so as to allow the rotation shaft portion 3202 to fully enter the receiving cavity. When the rotating shaft 3202 is fully installed in the receiving cavity, the elastic member 602 is no longer subjected to the pressure of the rotating shaft 3202 and returns to its original state. At this time, the elastic member 602 can prevent the rotating shaft 3202 from leaving the receiving cavity.

[0105] Optional, as shown in Figure 5(a) and Figure 5(b), Figure 8 , Figures 10-11As shown, the elastic member 602 can be U-shaped and is fitted onto the end face of the second end of the mounting base 600. The pivot portion 3202 has a frustum 32021 on each of its two sides perpendicular to the second center line X2. The cross-section of the frustum 32021 in the direction perpendicular to the axis of the pivot portion 3202 is trapezoidal. In some embodiments, the trapezoid has a first side, a second side, a third side, and a fourth side, wherein the first side is located on the side of the pivot portion 3202, the second side is parallel to the first side and away from the side of the pivot portion 3202, the third side is an inclined side close to the mounting base 600, and the fourth side is an inclined side away from the mounting base 600. Accordingly, in the direction extending along the axis of the pivot portion 3202, the frustum 32021 has a frustum surface corresponding to the second side, a first side surface corresponding to the third side, and a second side surface corresponding to the fourth side. During the installation of the pivot portion into the receiving cavity, the first side surface pushes the U-shaped elastic member 602 to open it until the prism surface abuts against the U-shaped elastic member 602. As installation proceeds, the surface of the frustum 32021 slides over the zigzag elastic member 602 in the direction of movement toward the mounting base 600 until it is fully inserted into the receiving cavity. At this time, the second side is restricted by the zigzag elastic member 602, and the pivot portion 3202 is stopped to prevent it from dislodging from the receiving cavity.

[0106] Optionally, the length of the third side can be longer than the length of the fourth side. This facilitates the installation of the pivot 3202 and enhances the stopping effect of the elastic member 602 on the pivot 3202.

[0107] Optional, such as Figure 12 and Figure 13 As shown, the actuator 100 housing 700 has a mounting portion 7021. Correspondingly, the rearview mirror housing has a limiting portion 801. The mounting portion 7021 can be fitted onto the limiting portion 801. The limiting portion 801 and the mounting portion 7021 have a gap G in the radial direction. A variable seal 900 can be provided radially inside the limiting portion 801 and abuts against the mounting portion 7021 circumferentially. That is, the variable seal 900 is placed in the gap G. The gap G is used to accommodate the deformable seal 900. This further enhances the stability of the actuator 100 and reduces rearview mirror noise.

[0108] Optional, such as Figure 14 The seal 900 can be an annular component with a very small gap Q between its two ends, for example, the gap Q between the two ends of the annular component can be 0 to 3 mm. Further, the seal 900 can be C-shaped, with a gap of 0 to 3 mm between the two ends of the C-shape. The seal 900 can be made of a self-lubricating material to reduce friction with the limiting part 801 and the mounting part 7021.

[0109] Furthermore, such as Figure 14 As shown, at least one set of small grooves A can be formed on the outer surface of the seal 900 to form a groove group. The groove group consists of two small grooves A with a small gap, and a deformable portion 901 is defined between the two small grooves A. Due to the presence of the deformable portion 901, the mounting portion 7021 of the actuator 100 is allowed to expand the seal 900 during installation to the limiting portion 801 of the rearview mirror housing for easy installation.

[0110] Optionally, multiple sets of grooves may be formed on the outer surface of the seal 900, with the distance between two sets of grooves being greater than the distance between the two small grooves A in one set of grooves. Thus, the surface of the seal may have multiple deformable portions 901 to further enhance the ease of installation of the mounting portion 7021.

[0111] In embodiments of this utility model, such as Figure 2 and Figure 15 As shown, the actuator 100 also includes an intermediate housing 703. The intermediate housing 703 can be used to support and position the first drive assembly 400 and the second drive assembly 500.

[0112] In some embodiments, the first drive assembly 400 includes a first motor 401 and a first transmission assembly 402, the first motor 401 being connected to the first rotary support 210 via the first transmission assembly 402; the second drive assembly 500 includes a second motor 501 and a second transmission assembly 502, the second motor 501 being connected to the second rotary support 310 via the second transmission assembly 502.

[0113] The intermediate housing 703 is provided with limiting portions for accommodating the first motor 401 and the second motor 501 respectively. A plug-in portion 713 is also provided on the intermediate housing 703 for accommodating a buffer member 720. The buffer member 720 can be plugged into the plug-in portion 713 and abuts against the first motor 401 and / or the second motor 501, thereby absorbing axial vibrations from the first motor 401 and / or the second motor 501 during motor operation and improving the stability of the actuator 100.

[0114] like Figure 4 As shown, in one feasible technical solution, the first transmission assembly 402 includes a first worm 411 coaxially fixedly connected to the motor shaft of the first motor 401, a first worm wheel 412 meshing with the first worm 411, a second worm 413 coaxially fixedly connected to the first worm wheel 412, a second worm wheel 414 meshing with the second worm 413, a third worm 415 coaxially connected to the second worm wheel, and the third worm 415 meshing with the first rotary support 210.

[0115] like Figures 5(a) to 5(b)As shown, in one feasible technical solution, the second transmission assembly 502 includes a fourth worm 511 coaxially fixedly connected to the motor shaft of the second motor 501, a third worm wheel 512 meshing with the fourth worm 511, a fifth worm 513 coaxially fixedly connected to the third worm wheel 512, a fourth worm wheel 514 meshing with the fifth worm 513, and a sixth worm 515 coaxially fixedly connected to the fourth worm wheel 514. The sixth worm 515 meshes with the second rotary support 310.

[0116] like Figure 3 As shown, in some embodiments, the spindle assembly 200 further includes a spring element 202, which is located radially inside the first rotary support 210 and abuts against the first rotary support 210 along the first centerline X1. Specifically, the spring element 202 abuts against the sliding ring 211 so that a spring force can be applied to the sliding ring 211 and the drive ring 212. When the sliding ring and the drive ring disengage, the sliding ring 211 needs to overcome the spring force of the spring element 202.

[0117] For example, elastic element 202 and elastic element 302 can both be cylindrical springs.

[0118] A second aspect of the present invention provides a vehicle that includes the rearview mirror of the first aspect embodiment.

[0119] Since the structure, working principle and beneficial effects of the rearview mirror have been described in the embodiments of the first aspect, the content of which is incorporated herein by reference, and the description is omitted here.

[0120] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A shafting support arrangement characterised in that, The device includes a rotating shaft, a mounting base, and a housing, wherein one end of the housing has a mounting hole disposed along a second center line, the rotating shaft passes through the mounting hole along the second center line, and is detachably connected to one end of the mounting base.

2. The shaft support device according to claim 1, characterized in that, The other end of the mounting base has a guide sleeve arranged along the second center line. The guide sleeve includes an upper half and a lower half, wherein the upper half and the lower half are misaligned in the axial direction of the guide sleeve. The other end of the housing has a guide shaft arranged along the second center line, and the guide shaft is inserted into the guide sleeve from between the upper half and the lower half.

3. An actuator for a vehicle, characterized by It includes the shaft support device as described in claim 1 or 2.

4. The actuator of claim 3, wherein, The rotating shaft is arranged along the second center line, and the rotating shaft is part of the swing arm, which is disposed on the secondary shaft assembly. The actuator further includes a second drive assembly, wherein the sub-shaft assembly cooperates with the second drive assembly to drive the housing of the rearview mirror to rotate about a second center line.

5. The actuator of claim 3, wherein, The actuator further includes a spindle assembly and a first drive assembly. The spindle assembly is drively connected to the first drive assembly. The spindle assembly is used to convert the rotational motion of the first drive assembly itself into rotational motion in which the first drive assembly drives the actuator housing to rotate around a first center line. The first center line and the second center line are not parallel to each other.

6. The actuator of claim 4, wherein, The secondary shaft assembly also includes: Secondary shaft; The second rotary support is sleeved on the outer side of the secondary shaft and is connected to the second drive assembly for transmission. The second rotary support is used to rotate around the third center line using the torque output by the second drive assembly. The third center line is not parallel to the second center line. The swing arm also includes a meshing part, which meshes with the second rotary support for transmission. The meshing part uses the torque output by the second rotary support to swing around the second center line, thereby driving the outer shell to rotate around the second center line.

7. The actuator as claimed in claim 6, characterized in that, The secondary shaft assembly also includes: A gap-eliminating element is sleeved on the outside of the secondary shaft and abuts against the second rotary support in the axial direction of the secondary shaft. The gap elimination element includes a first guide ramp that mates with the housing and a second guide ramp that mates with the swing arm. The first guide ramp and the second guide ramp are used to guide the swing arm to move toward the third center line when the second rotary support is compressed, so as to eliminate the gap between the engagement part and the second rotary support.

8. The actuator of claim 7, wherein, The gap elimination element further includes a first limiting end face and a second limiting end face, and the housing further includes: The first positioning platform includes a first positioning inclined surface and a first supporting end surface. The first positioning inclined surface is used to cooperate with the first guiding inclined surface, and the first supporting end surface is used to cooperate with the first limiting end surface. The swing arm further includes a first positioning protrusion, which has a sliding inclined surface that mates with the second guide inclined surface and a positioning end surface that mates with the second limiting end surface. Wherein, the first guide slope is in contact with the first positioning slope, and the first support end face and the first limiting end face have a first gap in the axial direction of the secondary shaft; and the second guide slope is in contact with the sliding slope, and the second limiting end face and the positioning end face have a second gap in the axial direction of the secondary shaft.

9. The actuator of claim 8, wherein, The housing further includes a second positioning platform, and the rotating shaft further includes a second positioning protrusion. There is a gap between the first positioning protrusion and the second positioning protrusion, and the second positioning platform is inserted into the gap in a direction parallel to the second center line.

10. The actuator of claim 7, wherein, The second rotary support includes a first gear and a second gear that abut against each other along the longitudinal centerline and are detachable from each other in the circumferential direction. The swing arm meshes with the first gear, and the output end of the second drive assembly meshes with the second gear. The gap elimination element further includes a fitting portion with a fitting surface that is at least partially in contact with the inner wall of the second gear.

11. The actuator of claim 6, wherein, The rotating shaft and the meshing part are an integral structure.

12. A rearview mirror characterized by include: shell; as well as The actuator according to any one of claims 3 to 11 is disposed within the housing.

13. A vehicle, characterized in that, Includes the rearview mirror as described in claim 12.

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