Mirror arm device, rearview mirror assembly and vehicle

Abstract

The utility model relates to a mirror arm device, rearview mirror assembly and vehicle, mirror arm device includes mirror arm skeleton, first shell, second shell and rotatory drive subassembly, the first shell is designed with the accommodation cavity of opening towards the first side, mirror arm skeleton is located in the accommodation cavity and is connected with the first shell, the second shell is located at the opening, and the rotatory drive subassembly is connected with the mirror arm skeleton. And the connecting rod is hermetically connected with the accommodating cavity. The rotation driving assembly is located on the lens arm framework and drives the second shell to rotate. When the rotary driving assembly rotates, the included angle between the longitudinal face of the first shell and the second shell is adjusted. In the running process of the vehicle, the rotary driving assembly can be driven to work, and the second shell is driven to rotate to be flush with the first shell. In the high-speed running process of a vehicle, it is guaranteed that the mirror arm device cannot generate obliquely-downward airflow through rotation of the second shell, and therefore eddy noise generated when the airflow encounters airflow on the lower surface due to the fact that the airflow moves downwards along the oblique face of the mirror arm can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle accessory technical field, concretely relates to a mirror arm device, rear -view mirror assembly and vehicle. BACKGROUND

[0002] In the high speed running process of vehicle, wind noise is the main source of the noise in the car. Among them, the rearview mirror wind noise as the important component of wind noise, the existing part vehicle type avoids the interference of the shell and mirror arm when folding, and the upper surface of the rear part of the mirror arm is designed as a downward inclined structure. When the car runs at high speed, the airflow passing through the mirror arm will move downward along the inclined surface and meet the airflow on the lower surface, and then generate vortex noise to aggravate the wind noise problem.

[0003] At present, the commonly used method to reduce the rearview mirror wind noise, such as adding sealing structure at the gap of the rearview mirror, increasing the spoiler structure on the rearview mirror shell, etc., although it can reduce the rearview mirror wind noise to a certain extent, but the airflow will move downward along the inclined surface of the mirror arm, resulting in the vortex noise generated by the meeting of the airflow on the lower surface. The noise reduction effect of the above structure is poor. UTILITY MODEL CONTENT

[0004] One of the purposes of the utility model is to provide a mirror arm device to solve the problem of vortex noise caused by the airflow moving downward along the inclined surface of the mirror arm and meeting the airflow on the lower surface in the high speed running process of the vehicle in the prior art. The second purpose is to provide a rearview mirror assembly. The third purpose is to provide a vehicle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A mirror arm device, the mirror arm device comprises a mirror arm skeleton, a first shell, a second shell and a rotary drive assembly, the first shell is designed with a containing cavity with an opening towards the first side, the mirror arm skeleton is located in the containing cavity and connected with the first shell, and the second shell is located at the opening and sealingly connected with the first shell. The rotary drive assembly is located on the mirror arm skeleton and drives the second shell to rotate. When the rotary drive assembly rotates, the included angle between the longitudinal surface of the first shell and the second shell is adjusted.

[0007] According to the above technical means, during the running of the vehicle, the rotary drive assembly can be driven to work, thereby driving the second shell to rotate and adjusting the included angle between the longitudinal surface of the first shell and the second shell. During the high speed running of the vehicle, the rotation of the second shell ensures that the mirror arm device will not produce inclined downward airflow, so that the vortex noise caused by the airflow moving downward along the inclined surface of the mirror arm and meeting the airflow on the lower surface can be greatly reduced.

[0008] Furthermore, when the rotary drive assembly rotates to reduce the angle between the longitudinal surface of the first housing and the second housing, it makes the second housing flush with the first housing. When the rotary drive assembly rotates to increase the angle between the longitudinal surface of the first housing and the second housing, it makes the second housing tilted relative to the first housing.

[0009] According to the above-mentioned technical means, by driving the second housing to rotate through the rotary drive assembly, and reducing the angle between the first and second housings to zero, the first and second housings become flush, and the mirror arm assembly will not generate downward tilting airflow. This can greatly reduce the vortex noise caused by the airflow moving downward along the tilting surface of the mirror arm and encountering the airflow on the lower surface. When increasing the angle between the first and second housings, the surface of the second housing is designed to tilt downward relative to the surface of the first housing, thereby avoiding interference between the housing and the mirror arm assembly when the rearview mirror is folded.

[0010] Furthermore, the rotation drive assembly includes a rotation motion output device and a gear transmission unit, the rotation motion output device being connected to the mirror arm frame. The gear transmission unit is drively connected to the output shaft of the rotation motion output device, wherein the gear transmission unit drives the second housing to rotate.

[0011] According to the above-mentioned technical means, the rotation of the second housing can be driven by the rotary motion output device, thereby realizing the rotation control of the second housing and improving the adjustment convenience of the second housing.

[0012] Furthermore, the gear transmission unit includes a drive gear, a driven gear, a rotating shaft, and a connecting bracket. The drive gear is coaxially fixed to the output shaft of the rotary motion output device. The driven gear meshes with the drive gear, the rotating shaft is coaxially fixed to the driven gear, and the mirror arm frame is rotatably connected. The connecting bracket is fixedly connected to the second housing and is interference-fitted with the rotating shaft.

[0013] Based on the above technical means, through the mutual cooperation of the driving gear, driven gear, rotating shaft and connecting bracket, the rotational motion of the rotary motion output device can be transmitted on the basis of simple structure, which improves the adjustment convenience of the second housing.

[0014] Furthermore, the second housing includes an inclined portion and an arc-shaped portion. The inclined portion is designed with an inclined surface and is connected to the rotary drive assembly so that when the rotary drive assembly rotates in the first direction, the inclined surface is flush with the longitudinal surface of the first housing. The arc-shaped portion is designed at an angle to the inclined portion, and the arc-shaped portion matches the bottom shape of the first housing.

[0015] The structure of the second housing can be simplified and the rotation of the second housing can be achieved using the above-mentioned technical means.

[0016] Furthermore, the telescope arm assembly also includes two first seals and two second seals. The two first seals are respectively located on both sides of the second housing in the length direction, and the first seals are interference-fitted with the first housing. The two second seals are respectively located on the first housing and distributed on both sides of the opening in the width direction to form a sealed connection between the first housing and the second housing.

[0017] According to the above technical means, the structural cooperation between the first seal and the second seal facilitates the assembly of the first housing and the second housing, and ensures the sealing of the accommodating cavity when the second housing rotates.

[0018] Furthermore, the first housing is designed with an air inlet, and the arm assembly further includes a follow-up air inlet assembly, which includes an air inlet housing, an air inlet sealing gasket, an air inlet pad, and an air inlet spring. The air inlet housing is connected to the first housing and has an air inlet cavity, wherein the air inlet cavity is in communication with the air passage of the air inlet. The air inlet sealing gasket is located in the air inlet cavity and covers the air inlet. The air inlet pad is located on the end face of the air inlet sealing gasket away from the air inlet. One end of the air inlet spring presses against the air inlet housing, and the other end presses against the air inlet pad. The air inlet spring presses against the air inlet sealing gasket to seal the accommodating cavity. When the pressure inside the accommodating cavity decreases, the external air pressure pushes the air inlet spring to compress and open the air inlet.

[0019] According to the above-mentioned technical means, during the process of the second housing rotating to be flush with the surface of the first housing, the air pressure between the accommodating cavity and the outside environment can be balanced, thereby reducing the influence of the air pressure difference in the accommodating cavity on the movement of the rotary drive assembly. This can improve the movement response speed of the rotary drive assembly.

[0020] Furthermore, the first housing is designed with an exhaust port, and the telescope arm device also includes a follow-up exhaust assembly, which includes an exhaust housing, an exhaust pull-back component, an exhaust sealing gasket, an exhaust baffle, and an exhaust spring. The exhaust housing is connected to the first housing and has an exhaust cavity, wherein the exhaust cavity is in communication with the exhaust port. The exhaust pull-back component is located in the exhaust cavity, and a portion of the exhaust pull-back component is embedded in the exhaust port. The exhaust sealing gasket is located in the exhaust port and is sleeved on the exhaust pull-back component. The exhaust baffle is fixed to the exhaust pull-back component, and one end of the exhaust spring abuts against the exhaust baffle, while the other end abuts against the first housing. When the pressure inside the accommodating cavity increases, the air pressure inside the accommodating cavity pushes the exhaust sealing gasket to move away from the exhaust cavity, thereby opening the exhaust port.

[0021] According to the above-mentioned technical means, during the process of the second housing rotating to an inclined downward position, the air pressure between the accommodating cavity and the outside environment can be balanced, thereby reducing the influence of the air pressure difference in the accommodating cavity on the movement of the rotary drive assembly. This can improve the movement response speed of the rotary drive assembly.

[0022] A rearview mirror assembly includes a mirror arm device as described in any of the above utility model descriptions.

[0023] According to the above technical means, during vehicle operation, the rotary drive component can be driven to work, thereby driving the second housing to rotate and adjusting the angle between the longitudinal surface of the first housing and the second housing. This ensures that during high-speed vehicle operation, the rotation of the second housing prevents the mirror arm device from generating downward tilting airflow, thereby greatly reducing the vortex noise caused by the airflow moving downward along the tilting surface of the mirror arm and encountering the airflow on the lower surface, and improving the product performance of the rearview mirror assembly.

[0024] A vehicle includes a rearview mirror assembly as described above.

[0025] According to the above-mentioned technical means, during vehicle operation, the rotary drive component can be driven to work, thereby driving the second housing to rotate and adjusting the angle between the longitudinal surface of the first housing and the second housing. This ensures that during high-speed vehicle operation, the rotation of the second housing prevents the mirror arm device from generating downward tilting airflow, thereby greatly reducing the vortex noise caused by the airflow moving downward along the tilting surface of the mirror arm and encountering the airflow on the lower surface, thus improving the riding experience of the vehicle.

[0026] The beneficial effects of this utility model are:

[0027] During vehicle operation, this invention can drive the rotary drive assembly to work, thereby rotating the second housing and adjusting the angle between the longitudinal surface of the first housing and the second housing. This prevents the mirror arm device from generating downward tilting airflow during high-speed vehicle operation, thus greatly reducing the vortex noise caused by the airflow moving downward along the tilting surface of the mirror arm and encountering the airflow on the lower surface. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a mirror arm device provided by this utility model;

[0029] Figure 2 This is a perspective view of the structure of a rotary drive assembly within a accommodating cavity provided by this utility model;

[0030] Figure 3 This is a three-dimensional structural diagram of a second shell provided by this utility model;

[0031] Figure 4 This is a schematic diagram of the connection between the first sealing element and the second housing provided by this utility model;

[0032] Figure 5 This is a schematic diagram showing the connection between the second sealing element and the first housing at the top of the opening provided by this utility model;

[0033] Figure 6 This is a schematic diagram showing the connection between the second sealing element and the first housing at the bottom of the opening provided by this utility model;

[0034] Figure 7 This is a structural schematic diagram of a follow-up intake assembly and a follow-up exhaust assembly provided by this utility model;

[0035] Reference numerals: 1. Arm frame; 2. First housing; 201. Opening; 202. Air inlet; 203. Exhaust outlet; 21. Longitudinal surface; 3. Second housing; 31. Inclined portion; 311. Inclined surface; 32. Arc portion; 4. Rotary drive assembly; 41. Rotary motion output device; 42. Gear transmission unit; 421. Drive gear; 422. Driven gear; 423. Rotation shaft; 424. Connecting bracket; 5. First seal; 6. Second seal; 7. Follow-up air inlet assembly; 71. Air inlet housing; 7101. Air inlet cavity; 72. Air inlet sealing gasket; 73. Air inlet pad; 74. Air inlet spring; 8. Follow-up exhaust assembly; 81. Exhaust housing; 8101. Exhaust cavity; 82. Exhaust pull-back component; 83. Exhaust sealing gasket; 84. Exhaust baffle; 85. Exhaust spring. Detailed Implementation

[0036] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0037] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0038] During high-speed vehicle operation, wind noise is a major source of interior noise. Rearview mirror wind noise is a significant component of this noise. To prevent interference between the mirror housing and the mirror arm assembly when the mirror is folded, some existing models design the upper rear surface of the mirror arm with a downward-sloping structure. When the car is traveling at high speed, the airflow passing over the mirror arm moves downwards along the slope and encounters the airflow on the lower surface of the mirror arm, thus generating vortex noise and exacerbating the wind noise problem.

[0039] Currently, common methods for reducing rearview mirror wind noise include adding a sealing structure at the gap between the rearview mirrors and adding a turbulence structure to the rearview mirror housing. Although these methods can reduce rearview mirror wind noise to some extent, the airflow will move downward along the inclined surface of the mirror arm, resulting in a large vortex noise generated when it meets the airflow on the lower surface. Therefore, the noise reduction effect of the above structures is poor.

[0040] Based on the aforementioned technical problems, this utility model is proposed. This utility model may include a mirror arm frame 1, a first housing 2, a second housing 3, and a rotation drive assembly 4. The first housing 2 is designed with an opening 201 facing a first side, forming a receiving cavity. The mirror arm frame 1 is located within the receiving cavity and connected to the first housing 2. The second housing 3 is located at the opening 201 and is sealed to the first housing 2. The rotation drive assembly 4 is located on the mirror arm frame 1 and drives the second housing 3 to rotate. When the rotation drive assembly 4 rotates, it adjusts the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3. This ensures that during high-speed vehicle operation, the rotation of the second housing 3 prevents the mirror arm device from generating downward-sloping airflow, thereby significantly reducing vortex noise caused by airflow moving downwards along the inclined surface of the mirror arm and encountering the airflow on the lower surface.

[0041] Reference Figures 1-7This utility model provides a telescope arm device, which may include a telescope arm frame 1, a first housing 2, a second housing 3, and a rotation drive assembly 4. The first housing 2 is designed with an opening 201 facing a first side of a receiving cavity. The telescope arm frame 1 is located in the receiving cavity and connected to the first housing 2. The second housing 3 is located at the opening 201 and is sealed to the first housing 2. The rotation drive assembly 4 is located on the telescope arm frame 1 and drives the second housing 3 to rotate. When the rotation drive assembly 4 rotates, it adjusts the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3.

[0042] In this embodiment of the invention, the mirror arm frame 1 is connected to the vehicle body structure. The mirror arm frame 1 also provides structural support for other components of the mirror arm device. The first housing 2 is designed with an opening 201 in its accommodating cavity. The opening 201 faces a first side of the first housing 2, which may be the side of the mirror arm device near the rear of the vehicle body. This side may also be referred to as the longitudinal surface 21 of the first housing 2. The mirror arm frame 1 is located within the accommodating cavity. The second housing 3 is located at the opening 201 and is sealed to the first housing 2. This sealed connection between the second housing 3 and the first housing 2 ensures that the accommodating cavity is sealed, thereby reducing wind noise from the mirror arm device.

[0043] The rotation drive assembly 4 is installed within the accommodating cavity and connected to the telescope arm frame 1. The rotation drive assembly outputs rotational motion. Thus, the second housing 3 is drive-connected to the rotation drive assembly 4, allowing the second housing 3 to rotate synchronously when the rotation drive assembly 4 outputs rotational motion. This allows adjustment of the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3. During high-speed vehicle operation, the rotation of the second housing 3 prevents the telescope arm from generating downward-sloping airflow, significantly reducing vortex noise caused by airflow moving downwards along the tilted surface of the telescope arm and encountering the airflow on the lower surface.

[0044] An optional embodiment of the utility model, referring to... Figure 1 As shown, when the rotary drive assembly 4 rotates to reduce the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3, the second housing 3 becomes flush with the first housing 2. When the rotary drive assembly 4 rotates to increase the angle between the longitudinal surface of the first housing 2 and the second housing 3, the second housing 3 becomes inclined relative to the first housing 2.

[0045] In this embodiment of the invention, when the rotary drive assembly 4 rotates along the first direction, the second housing 2 can move away from the accommodating cavity. At this time, the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3 gradually decreases. Driven by the rotary drive assembly 4, the second housing 3 rotates until the angle between it and the longitudinal surface 21 of the first housing 2 is zero, that is, the second housing 3 is flush with the longitudinal surface 31. "Flat" can be understood as the surface of the first housing 2 and the surface of the second housing 3 being in the same plane, or approximately in the same plane (considering allowable errors in height, unevenness, etc.). Since the first housing 2 and the second housing 3 remain flush on the longitudinal surface 31 (also called the first side) of the mirror arm device, the mirror arm device will not generate downward-sloping airflow during high-speed vehicle operation. This greatly reduces the vortex noise generated when the airflow moves downward along the inclined surface of the mirror arm and encounters the airflow on the lower surface.

[0046] When the rotary drive assembly 4 rotates along the second direction, the second housing 2 moves closer to the accommodating cavity, at which point the angle between the longitudinal surface of the first housing 2 and the second housing 3 gradually increases. This causes the second housing 3 to change from a flush position with the first housing 2 to an inclined design relative to the first housing 2. Consequently, the second housing 3 is inclined downwards relative to the longitudinal surface 21 of the first housing 2. From the overall perspective of the mirror arm assembly, the first housing 2 and the second housing 3 form an inclined surface from top to bottom on the first side, thereby preventing interference between the housing and the mirror arm assembly when the rearview mirror is folded.

[0047] An optional embodiment of the utility model, referring to... Figure 2 As shown, the rotation drive assembly 4 includes a rotation motion output device 41 and a gear transmission unit 42. The rotation motion output device 41 is connected to the mirror arm frame 1. The gear transmission unit 42 is driven by the output shaft of the rotation motion output device 41, and the gear transmission unit 42 is driven by the output shaft of the rotation motion output device 41. The gear transmission unit 42 drives the second housing 3 to rotate.

[0048] In this embodiment of the present invention, the rotary drive assembly 4 may include a rotary motion output device 41 and a gear transmission unit 42, wherein the rotary motion output device 41 is used to output rotary motion. For example, the rotary motion output device 41 may include a motor, and the gear transmission unit 42 includes at least two gears, so that the rotary motion output by the rotary motion output device 41 can be transmitted through the gear transmission unit 42. The gear transmission unit 42 is designed to facilitate the arrangement of the rotary motion output device 41 and the second housing 3.

[0049] The gear transmission unit 42 may include a power input end and a power output end. The power input end of the gear transmission unit 42 is connected to the output shaft of the rotary motion output device 41, and the power output end of the gear transmission unit 42 is fixedly connected to the second housing 3, so that when the rotary motion output device 41 outputs rotary motion, it drives the second housing 3 to rotate synchronously. Furthermore, the gear transmission unit 42 can be connected to the mirror arm frame 1. Thus, the rotation of the second housing 3 can be driven by the rotary motion output device 41, realizing rotational control of the second housing 3 and improving the ease of adjustment of the second housing 3.

[0050] An optional embodiment of the utility model, referring to... Figure 2 As shown, the gear transmission unit 42 includes a drive gear 421, a driven gear 422, a rotating shaft 423, and a connecting bracket 424. The drive gear 421 is coaxially fixed with the output shaft of the rotary motion output device 41. The driven gear 422 meshes with the drive gear 421, and the rotating shaft 423 is coaxially fixed with the driven gear 422, and is rotatably connected to the mirror arm frame 1. The connecting bracket 424 is fixedly connected to the second housing 3 and is interference-fitted with the rotating shaft 423.

[0051] In this embodiment of the invention, the gear transmission unit 42 may include a drive gear 421, a driven gear 422, a rotating shaft 423, and a connecting bracket 424. The drive gear 421 is coaxially fixed with the output shaft of the rotary motion output device 41. This can be understood as the central axis of the drive gear 421 coinciding with the central axis of the output shaft of the rotary motion output device 41, and the drive gear 421 is fixed to the output shaft of the rotary motion output device 41. For example, an interference fit or similar method can be used to achieve this fixation. Therefore, when the output shaft of the rotary motion output device 41 rotates, it can drive the drive gear 421 to rotate synchronously.

[0052] The rotating shaft 423 is coaxially fixed with the driven gear 422. This can be understood as the central axis of the rotating shaft 423 coinciding with the central axis of the driven gear 422, and the rotating shaft 423 and the driven gear 422 being fixed. For example, an interference fit or similar method can be used to achieve this fixation. The rotating shaft 423 is rotatably connected to the telescope frame 1. For example, the rotating shaft 423 can be rotatably connected to the telescope frame 1 via components such as bearing seats. This allows for the free rotation of the rotating shaft 423 while simultaneously limiting its movement.

[0053] The driven gear 422 meshes with the driving gear 421. When the driving gear 421 rotates, it drives the driven gear 422 to rotate synchronously. The driven gear 422 drives the rotating shaft 423, which is fixedly connected to it, to rotate. The connecting bracket 424 is fixedly connected to the second housing 3 and is interference-fitted with the rotating shaft 423. Thus, when the rotating shaft 423 rotates, it drives the second housing 3 to rotate around the rotating shaft 423.

[0054] When the rotary motion output device 41 rotates along the first direction, the second housing 3 is driven to rotate upward. After the second housing 3 rotates at a certain angle, the surfaces of the first housing 2 and the second housing 3 are flush. During the high-speed driving of the vehicle, the rotation of the second housing 3 ensures that the mirror arm device will not generate downward tilted airflow, thereby greatly reducing the vortex noise caused by the airflow moving downward along the tilted surface of the mirror arm and meeting the airflow on the lower surface.

[0055] When the rotary motion output device 41 rotates in the second direction, the second housing 3 is driven to rotate downwards. This causes the second housing 3 to change from a flush position with the first housing 2 to an inclined position relative to the first housing 2. Thus, with the second housing 3 inclined downwards relative to the surface of the first housing 2, from the overall view of the mirror arm assembly, the first housing 2 and the second housing 3 form a downward-sloping surface on the first side, thereby preventing interference between the housing and the mirror arm assembly when the rearview mirror is folded.

[0056] In summary, through the cooperation of the driving gear 421, the driven gear 422, the rotating shaft 423, and the connecting bracket 424, the rotational motion of the rotary motion output device 41 can be transmitted on the basis of simple structure, thereby improving the adjustment convenience of the second housing 3.

[0057] An optional embodiment of the utility model, referring to... Figure 3As shown, the second housing 3 includes an inclined portion 31 and an arc-shaped portion 32. The inclined portion 31 is designed with an inclined surface 311. The inclined portion 31 is connected to the rotary drive assembly 4 so that when the rotary drive assembly 4 rotates in a first direction, the inclined surface 311 is flush with the surface of the first housing 2. The arc-shaped portion 32 is designed at an angle to the inclined portion 31, and the arc-shaped portion 32 matches the bottom shape of the first housing 2.

[0058] In this embodiment of the invention, the second housing 3 may include an inclined portion 31 and an arcuate portion 32. The inclined portion 31 is used to prevent the formation of airflow from the upper to the lower surface of the lens arm assembly. In some embodiments, to ensure the sealing of the accommodating cavity, the inclined portion 31 and the arcuate portion 32 may be an integral structure. The inclined surface 311 may be the end face of the inclined portion 31 away from the accommodating cavity. The inclined portion 31 is fixedly connected to the rotary drive assembly 4. For example, the rotary drive assembly 4 and the end face of the inclined portion 31 close to the accommodating cavity are fixed by the connecting bracket 424. Thus, when the rotary drive assembly 4 rotates a certain angle in the first direction, the inclined surface 311 is flush with the surface of the first housing 2. Therefore, during high-speed vehicle operation, no downward airflow is generated, reducing the vortex noise caused by the airflow moving downward along the inclined surface of the lens arm and encountering the airflow on the lower surface.

[0059] The arc portion 32 and the inclined portion 31 are designed at an angle (i.e., the arc portion 32 and the inclined portion 31 form a certain angle), which facilitates the arc portion 32 to abut against the bottom of the first housing 2. The area of ​​the bottom of the first housing 2 near the opening 201 can match the shape of the arc portion 32, thereby maintaining a sealed connection between the arc portion 32 and the first housing 2 during the reciprocating rotation of the inclined portion 31 and the arc portion 32, ensuring the airtightness of the accommodating cavity and preventing additional wind noise. The center of the arc portion 32 is located at the central axis of the rotation shaft 423. The second housing 3 has a simple structural design, which facilitates the rotational adjustment of the second housing 3 and reduces its production cost.

[0060] An optional embodiment of the utility model, referring to... Figure 3 , Figure 4 , Figure 5 as well as Figure 6As shown, the telescope arm assembly further includes two first seals 5 and two second seals 6. The two first seals 5 are respectively located on both sides of the second housing 3 in the length direction, and the first seals 5 are interference-fitted with the first housing 2. The two second seals 6 are respectively located on the first housing 2 and distributed on both sides of the opening 201 in the width direction to form a sealed connection between the first housing 2 and the second housing 3.

[0061] In this embodiment of the invention, the telescope arm device may further include two first sealing elements 5 and two second sealing elements 6. (Refer to...) Figure 3 As shown, the two first seals 5 are located on opposite sides of the second housing 3 along its length (also referred to as the length direction of the opening 201). That is, the first seals 5 are distributed along the height direction of the vehicle. (Refer to...) Figure 4 As shown, the edge of the second housing 3 may be pre-formed with a first sealing groove for the installation of the first sealing member 5, wherein the first sealing member 5 is embedded in the first sealing groove and can be fixed with the second housing 3 by interference fit. Thus, the end face of the first sealing member 5 away from the second housing 3 is used for interference fit with the first housing 2, thereby ensuring that the two sides of the second housing 3 in the length direction are sealed and connected to the second housing 3 during the rotation of the second housing 3.

[0062] The second seal 6 is located on the first housing 2 and is distributed on both sides of the opening 201 in the width direction; that is, the second seal 6 is distributed along the width direction of the vehicle. (Refer to...) Figure 5 As shown, the first second sealing member 6 can be located above the opening 201. For example, the first housing 2 has a second sealing groove in the area above the opening 201, and the opening of the second sealing groove is horizontally designed. The second sealing member 6 is embedded in the second sealing groove and can be fixed with the first housing 2 by interference fit. Thus, the end face of the second sealing member 6 away from the first housing 2 is used for interference fit with the second housing 3, so that even when the second housing 3 rotates, the first housing 2 can still be sealed to the second housing 3 on its upper side in the width direction.

[0063] Reference Figure 6As shown, the second sealing member 6 can be located below the opening 201. For example, the first housing 2 has a second sealing groove in the area below the opening 201, with the opening of the second sealing groove facing upwards. The second sealing member 6 is embedded in the second sealing groove and can be fixed with the first housing 2 by interference fit. Thus, the end face of the second sealing member 6 away from the first housing 2 is used for interference fit with the second housing 3 (or for interference fit with the arc portion 32 of the second housing 3), thereby ensuring that the first housing 2 is sealed to the second housing 3 on its lower side in the width direction during the rotation of the second housing 3.

[0064] In summary, the structural cooperation between the first sealing element 5 and the second sealing element 6 facilitates the assembly of the first housing 2 and the second housing 3, and ensures the sealing of the accommodating cavity when the second housing 3 rotates.

[0065] An optional embodiment of the utility model, referring to... Figure 7 As shown, the first housing 2 is designed with an air inlet 202. The arm assembly also includes a follow-up air inlet assembly 7, which includes an air inlet housing 71, an air inlet sealing gasket 72, an air inlet pad 73, and an air inlet spring 74. The air inlet housing 71 is connected to the first housing 2 and has an air inlet cavity 7101, which is connected to the air inlet 202. The air inlet sealing gasket 72 is located inside the air inlet cavity 7101 and covers the air inlet 202. The air inlet pad 73 is located on the end face of the air inlet sealing gasket 72 away from the air inlet 202. One end of the air inlet spring 74 presses against the air inlet housing 71, and the other end presses against the air inlet pad 73. The air inlet spring 74 presses against the air inlet sealing gasket 72 to seal the accommodating cavity. When the pressure inside the accommodating cavity decreases, the external air pressure pushes the intake spring 74 to compress and open the air intake port 202.

[0066] In this embodiment of the invention, the follow-up air intake component 7 refers to a component that automatically opens or seals the air intake port 202 based on the air pressure difference between the accommodating cavity and the external environment. The air intake housing 71 can be an integral structure with the first housing 2. The air intake housing 71 has an air intake cavity 7101 designed inside, and the air intake cavity 7101 is connected to the air intake port 202. Thus, external airflow can enter the air intake cavity 7101 through the air intake port 202, and then enter the accommodating cavity through the air intake cavity 7101. The air intake sealing gasket 72 covers the air intake port 202, thereby sealing the air intake port 202. The cross-sectional shape of the air intake cavity 7101 can be consistent with the cross-sectional shape of the air intake spring 74, so that the air intake spring 74 can be radially limited by the shape matching the air intake cavity 7101. Furthermore, the intake housing 71 and the first housing 2 cooperate to limit the intake spring 74 in the axial direction.

[0067] One end of the intake spring 74 abuts against the inner wall of the intake housing 71, and the other end abuts against the intake gasket 73 covering the intake sealing gasket 72. The intake gasket 73 has a certain rigidity to prevent radial deformation of the intake spring 74. The intake spring 74 is in a compressed state within the intake cavity 7101. Therefore, the deformation force of the intake spring 74 maintains pressure on the intake sealing gasket 72, ensuring the sealing performance of the intake sealing gasket 72 to the intake port 202.

[0068] As the second housing 3 rotates upwards until it is flush with the surface of the first housing 2, the space inside the accommodating cavity increases, and the air pressure decreases. The air pressure outside the air inlet 202 is greater than the air pressure inside the accommodating cavity. Driven by the external air pressure, the air inlet sealing gasket 72 moves towards the air inlet spring 74, further compressing the air inlet spring 74. At this time, the air inlet 202 opens, allowing external airflow into the accommodating cavity. When the air pressure balances, the air pressure pushing force on the air inlet sealing gasket 72 disappears, and the air inlet spring 74, due to its deformation recovery, pushes the air inlet sealing gasket 72 to seal the air inlet 202. This reduces the impact of the air pressure difference in the accommodating cavity on the movement of the rotary drive assembly 4 and improves the movement response speed of the rotary drive assembly 4.

[0069] An optional embodiment of the utility model, referring to... Figure 7As shown, the first housing 2 is designed with an exhaust port 203. The arm assembly also includes a follow-up exhaust component 8, which includes an exhaust housing 81, an exhaust pull-back component 82, an exhaust sealing gasket 83, an exhaust baffle 84, and an exhaust spring 85. The exhaust housing 81 is connected to the first housing 2 and has an exhaust cavity 8101, which is connected to the exhaust port 203. The exhaust pull-back component 82 is located in the exhaust cavity 8101, and a portion of the exhaust pull-back component 82 is embedded in the exhaust port 203. The exhaust sealing gasket 83 is located in the exhaust port 203 and is sleeved on the exhaust pull-back component 82. The exhaust baffle 84 is fixed to the exhaust pull-back component 82, and one end of the exhaust spring 85 abuts against the exhaust baffle 84, while the other end abuts against the first housing 2. When the pressure inside the accommodating cavity increases, the air pressure inside the accommodating cavity pushes the exhaust sealing gasket 83 to move away from the exhaust cavity 8101, thereby opening the exhaust port 203.

[0070] In this embodiment of the invention, the follow-up exhaust assembly 8 refers to an assembly that automatically opens or seals the exhaust port 203 based on the air pressure difference between the accommodating cavity and the external environment. The exhaust housing 81 can be an integral structure with the first housing 2. An exhaust chamber 8101 is designed within the exhaust housing 81, and the exhaust chamber 8101 is connected to the exhaust port 203. Thus, external airflow can enter the exhaust chamber 8101 through the exhaust port 203, and then enter the accommodating cavity through the exhaust chamber 8101. The exhaust pull-back member 82 can be a structural component with a rod. The exhaust pull-back member 82 is located in the exhaust chamber 8101, with a portion extending into the exhaust port 203. Alternatively, a portion of the exhaust pull-back member 82 may be inserted into the exhaust port 203. The exhaust sealing gasket 83 is sleeved on the exhaust pull-back member 82 and fixedly connected to it. The exhaust sealing gasket 83 can seal the exhaust hole 203, thereby ensuring the airtightness of the accommodating cavity.

[0071] The end of the exhaust pull-back member 82 away from the exhaust sealing gasket 83 can be fixedly connected to the exhaust baffle 84. The cross-sectional shape of the exhaust baffle 84 can be consistent with the cross-sectional shape of the exhaust cavity 8101, allowing the exhaust baffle 84 to slide along the exhaust cavity 8101 through shape matching. The cross-sectional shape of the exhaust spring 85 can be consistent with the cross-sectional shape of the exhaust cavity 8101, allowing the exhaust spring 85 to be radially limited through shape matching. Furthermore, the exhaust baffle 84, through its cooperation with the first housing 2, provides axial limitation for the exhaust spring 85. The first housing 2 can be designed with a flange facing the exhaust spring 85, thereby radially limiting the exhaust spring 85 and preventing radial displacement.

[0072] The exhaust spring 85 is compressed by the gravity of the exhaust baffle 84, the exhaust pull-back member 82, and the exhaust sealing gasket 83 when there is no air pressure. The exhaust baffle 84 is positioned within the exhaust cavity 8101 based on the elastic force of the exhaust spring 85. At this time, the exhaust sealing gasket 83 is located inside the exhaust hole 203, sealing the exhaust hole 203. When the second housing 3 rotates downwards, the space in the accommodating cavity decreases, and the corresponding air pressure increases. Under the action of the internal air pressure, the exhaust sealing gasket 83 moves downwards away from the exhaust cavity 8101, thereby opening the exhaust hole 203. This balances the air pressure between the accommodating cavity and the outside environment.

[0073] When the air pressure on the exhaust sealing gasket 83 disappears, the exhaust spring 85 deforms and recovers, driving the exhaust baffle 84 to move upward, simultaneously driving the exhaust sealing gasket 83 to move upward, thus sealing the exhaust port 203 again. Therefore, the design of the follow-up intake assembly 7 and the follow-up exhaust assembly 8 can reduce the influence of the air pressure difference in the accommodating cavity on the movement of the rotary drive assembly 4 during the reciprocating rotation of the second housing 3. This improves the movement response speed of the rotary drive assembly 4.

[0074] In one or more embodiments, the sealing structures involved in the present invention (e.g., the first seal, the second seal, the intake gasket, and the exhaust gasket) can be made of soft materials such as rubber, plastic, or silicone. The directions of rotation of the rotary motion output device 41 along the first direction and the second direction are not specifically limited.

[0075] This utility model embodiment also provides a rearview mirror assembly, which may include the mirror arm device as described in any of the above utility model embodiments.

[0076] In this embodiment of the present invention, the mirror arm device described in any of the above embodiments can drive the rotation drive component 4 to operate during vehicle operation, thereby rotating the second housing 3 and adjusting the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3. This ensures that during high-speed vehicle operation, the rotation of the second housing 3 prevents the mirror arm device from generating downward-sloping airflow, significantly reducing vortex noise caused by airflow moving downwards along the inclined surface of the mirror arm and encountering the airflow on the lower surface.

[0077] The rearview mirror assembly may further include a rearview mirror housing and a rearview mirror lens, wherein the rearview mirror lens is embedded in the rearview mirror housing and the rearview mirror housing is connected to the mirror arm assembly.

[0078] This utility model embodiment also provides a vehicle, which may include the rearview mirror assembly described in the above utility model embodiment.

[0079] In this embodiment of the invention, the vehicle described in the above-described embodiment can drive the rotary drive assembly 4 to operate during vehicle operation, causing the second housing 3 to rotate, thereby adjusting the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3. This ensures that during high-speed vehicle operation, the rotation of the second housing 3 prevents the mirror arm device from generating downward-sloping airflow, thus significantly reducing vortex noise caused by airflow moving downwards along the inclined surface of the mirror arm and encountering the airflow on the lower surface.

[0080] The vehicles may include, but are not limited to, the following types: gasoline vehicles, hybrid vehicles, and pure electric vehicles.

[0081] In summary, this utility model discloses a mirror arm device, a rearview mirror assembly, and a vehicle. The mirror arm device may include a mirror arm frame 1, a first housing 2, a second housing 3, and a rotation drive assembly 4. The first housing 2 is designed with an opening 201 facing a first side, and the mirror arm frame 1 is located in the receiving cavity and connected to the first housing 2. The second housing 3 is located at the opening 201 and is sealed to the first housing 2. The rotation drive assembly 4 is located on the mirror arm frame 1, and its output shaft is fixedly connected to the mirror arm frame 1. When the rotation drive assembly 4 rotates in a first direction, it drives the second housing 3 to rotate until it is flush with the first housing 2. During vehicle operation, the rotation drive assembly 4 drives the second housing 3 to rotate, thereby adjusting the angle between the longitudinal surface 21 of the first housing 2 and the second housing 3. This ensures that during high-speed vehicle operation, the rotation of the second housing 3 prevents the mirror arm device from generating downward tilting airflow, thus greatly reducing the vortex noise caused by the airflow moving downward along the tilting surface of the mirror arm and encountering the airflow on the lower surface.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0083] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible. Therefore, any combination of the above embodiments is an implementation scheme of this utility model. However, due to space limitations, this specification will not describe them in detail here.

[0084] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0085] Similarly, it should be understood that, in order to simplify the present invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the present invention above, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0086] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A mirror arm apparatus, characterized by, The mirror arm device comprises: a mirror arm skeleton (1); a first shell (2) designed with a receiving cavity with an opening (201) towards a first side, the mirror arm skeleton (1) being located in the receiving cavity and connected with the first shell (2); a second shell (3) located at the opening (201) and sealingly connected with the first shell (2); a rotary driving assembly (4) located on the mirror arm skeleton (1) and driving the second shell (3) to rotate, the rotary driving assembly (4) adjusting the included angle between the longitudinal surface (21) of the first shell (2) and the second shell (3) when rotating.

2. The mirror arm apparatus of claim 1, wherein, When the rotary driving assembly (4) rotates to reduce the included angle between the longitudinal surface (21) of the first shell (2) and the second shell (3), the second shell (3) is flush with the first shell (2); When the rotary driving assembly (4) rotates to increase the included angle between the longitudinal surface of the first shell (2) and the second shell (3), the second shell (3) is arranged obliquely relative to the first shell (2).

3. The mirror arm apparatus of claim 1, wherein, The rotary driving assembly (4) comprises: a rotary motion output device (41) connected with the mirror arm skeleton (1); a gear transmission unit (42) in transmission connection with the output shaft of the rotary motion output device (41), wherein the gear transmission unit (42) drives the second shell (3) to rotate.

4. The mirror arm apparatus of claim 3, wherein, The gear transmission unit (42) comprises: a driving gear (421) coaxially fixed with the output shaft of the rotary motion output device (41); a driven gear (422) in meshing connection with the driving gear (421); a rotary shaft (423) coaxially fixed with the driven gear (422) and rotationally connected with the mirror arm skeleton (1); a connecting bracket (424) fixedly connected with the second shell (3) and in interference fit with the rotary shaft (423).

5. The mirror arm apparatus of claim 1, wherein, The second shell (3) comprises: an inclined portion (31) designed with an inclined surface (311), the inclined portion (31) being connected with the rotary driving assembly (4) so that the inclined surface (311) is flush with the longitudinal surface (21) of the first shell (2) when the rotary driving assembly (4) rotates in a first direction; a circular arc portion (32) designed at an included angle with the inclined portion (31), the circular arc portion (32) being in shape fit with the bottom of the first shell (2).

6. The mirror arm apparatus of claim 1, wherein, The mirror arm device further comprises: two first sealing members (5) respectively located on both sides of the second shell (3) in the length direction, the first sealing members (5) being in interference fit with the first shell (2); Two second sealing members (6) are arranged on the first housing (2) and are distributed on both sides of the opening (201) in the width direction to form a sealed connection between the first housing (2) and the second housing (3).

7. The mirror arm apparatus of claim 1, wherein, The first housing (2) is provided with an air inlet hole (202), and the mirror arm device further comprises a follow-up air inlet assembly (7), which comprises: an air inlet housing (71) connected with the first housing (2) and provided with an air inlet cavity (7101), wherein the air inlet cavity (7101) is in air communication with the air inlet hole (202); an air inlet sealing gasket (72) arranged in the air inlet cavity (7101) and covering the air inlet hole (202); an air inlet gasket (73) arranged on the end face of the air inlet sealing gasket (72) away from the air inlet hole (202); an air inlet spring (74) abutting against the air inlet housing (71) at one end and abutting against the air inlet gasket (73) at the other end, and abutting against the air inlet sealing gasket (72) to seal the accommodating cavity; when the pressure in the accommodating cavity decreases, the external air pressure pushes the air inlet spring (74) to compress and open the air inlet hole (202).

8. The mirror arm apparatus of claim 1, wherein, The first housing (2) is provided with an air outlet hole (203), and the mirror arm device further comprises a follow-up air outlet assembly (8), which comprises: an air outlet housing (81) connected with the first housing (2) and provided with an air outlet cavity (8101), wherein the air outlet cavity (8101) is in air communication with the air outlet hole (203); an air outlet pull member (82) arranged in the air outlet cavity (8101) and partially embedded in the air outlet hole (203); an air outlet sealing gasket (83) arranged in the air outlet hole (203) and sleeved on the air outlet pull member (82); an air outlet baffle (84) fixed on the air outlet pull member (82); an air outlet spring (85) abutting against the air outlet baffle (84) at one end and abutting against the first housing (2) at the other end; when the pressure in the accommodating cavity increases, the air pressure in the accommodating cavity pushes the air outlet sealing gasket (83) to move away from the air outlet cavity (8101) to open the air outlet hole (203).

9. A rearview mirror assembly characterized by, The rearview mirror assembly comprises the mirror arm device according to any one of claims 1-8.

10. A vehicle characterized by comprising: The vehicle comprises the rearview mirror assembly according to claim 9. The vehicle comprises the rearview mirror assembly according to claim 9.

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