A car interior rearview mirror structure with automatic expansion function

Abstract

The present invention discloses a car interior rearview mirror structure with automatic expansion function, including a display screen assembly, an automatic expansion wheel set and a rear shell, wherein the automatic expansion wheel set is arranged inside the rear shell, and the automatic expansion wheel set is composed of a gear ring, a sun gear and a planetary gear, and the wheel edge of the sun gear is meshed and connected with two symmetrically arranged planetary gears, and the inner ring teeth are evenly arranged on the inner ring side surface of the gear ring, and the inner ring teeth are meshed and connected with the planetary gears, and the display screen assembly is composed of a main display screen frame group, a left display screen frame group and a right display screen frame group, and two groups of gear ring outer teeth are arranged on the outer ring surface of the gear ring, and the outer teeth of the gear ring are meshed and connected with a bevel gear, and the bevel gear is meshed and connected with a rack. The beneficial effect is that the present invention realizes the telescopic interior rearview mirror, saves space, improves the utilization rate of the interior space of the car, and is applicable to the size requirements of the interior rearview mirror of different models.

Description

Technical Field

[0001] The invention relates to the field of automobile interior rearview mirror devices, in particular to an automobile interior rearview mirror structure with an automatic expansion function. Background Art

[0002] The automotive industry is constantly pursuing the utilization of in-vehicle space and improving passenger comfort to increase competitiveness. In-vehicle space optimization is mainly achieved through structural design optimization of in-vehicle components. To ensure that the driver can see the vehicle behind clearly, a rearview mirror is usually installed in the cab. Conventional rearview mirrors cannot be designed too small, while larger rearview mirrors will occupy the space in the car and affect the comfort of the ride. Summary of the invention

[0003] The purpose of the present invention is to provide a car interior rearview mirror structure with an automatic expansion function in order to improve the utilization rate of the interior space of the car and to meet the size requirements of the interior rearview mirror for different car models.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] A car interior rearview mirror structure with an automatic expansion function, comprising a display screen assembly, an automatic expansion wheel set and a rear shell, wherein the automatic expansion wheel set is arranged inside the rear shell, and the automatic expansion wheel set consists of a gear ring, a sun gear and a planetary gear, the wheel edge of the sun gear is meshingly connected with two symmetrically arranged planetary gears, the inner ring side surface of the gear ring is evenly provided with inner ring teeth, and the inner ring teeth are meshingly connected with the planetary gears, the display screen assembly consists of a main display screen frame group, a left display screen frame group and a right display screen frame group, two groups of gear ring outer teeth are arranged on the outer ring side surface of the gear ring, the outer teeth of the gear ring are meshingly connected with a bevel gear, the bevel gear is meshingly connected with a rack, one end of the rack is installed on the back of the main display screen frame group, the two planetary gears are respectively connected to the left display screen frame group and the right display screen frame group through a connecting rod, and a rotating motor for driving the gear ring is arranged on the back side of the sun gear, and the rotating motor is connected to the gear ring.

[0006] Furthermore, two groups of telescopic slide rails for limiting the sliding of the left display screen frame group and the right display screen frame group are installed on the inner shell wall of the rear shell, and slide rail mounting blocks are installed on the back of the left display screen frame group and the right display screen frame group, and the slide rail mounting blocks are installed on the telescopic slide rails.

[0007] Furthermore, the bevel gear is rotatably installed in the rear housing via the bevel gear shaft.

[0008] Furthermore, the ring gear is rotatably mounted to one end of the connecting rod via a ring gear shaft, a connecting rod end shaft is provided on the back of the left display screen frame group and the right display screen frame group, and the left display screen frame group and the right display screen frame group are both rotatably mounted to the other end of the connecting rod via the connecting rod end shaft.

[0009] Furthermore, the main display screen frame group consists of a main screen frame and a main display screen installed on the front side of the main screen frame. Left and right screen frame grooves are arranged on both sides of the main screen frame. The left display screen frame group and the right display screen frame group are respectively arranged in the left and right screen frame grooves.

[0010] Furthermore, the back of the main display screen frame assembly is connected to the inner wall of the rear shell through a telescopic shaft.

[0011] In the above structure, when the display screen is not unfolded, the planetary gear is at an angle to the horizontal direction, the connecting rod is in a retracted state, the left display screen and the right display screen are retracted behind the main display screen, and the sun gear is fixed. When the left and right display screens need to be unfolded, the rotating motor drives the gear ring to rotate counterclockwise, and then drives the two planetary gears to rotate counterclockwise, and the connecting rod and the left and right display screens are also unfolded accordingly. When the planetary gear rotates until the line connecting the two planetary gear axes is parallel to the horizontal direction, the connecting rod is unfolded to the maximum distance, and the left and right display screens are also unfolded to the farthest. At this time, there is a certain gap between the left and right display screens and the main display screen, thereby ensuring that the main display screen has enough space to move, and the outer teeth of the gear ring on the gear ring have not yet contacted the bevel gear, so the bevel gear does not rotate at this time;

[0012] When the rotating system continues to rotate counterclockwise, the outer teeth of the gear ring contact the bevel gear, driving the bevel gear to rotate, and then driving the rack to move backward, thereby driving the main display screen to move backward. During this process, the connecting rod passes the maximum expansion position, driving the left and right display screens to shrink toward the middle and clamp the main display screen, completing the expansion of the display screen assembly;

[0013] When the left and right display screens need to be folded, the rotary motor rotates clockwise, driving the rotating system to rotate, and the main display screen is driven forward by the rack. During this process, the connecting rod will drive the left and right display screens to expand to the maximum distance on both sides first to avoid interference between the left and right display screens and the main display screen. After passing the maximum expansion position, as the planetary gear rotates, the left and right display screens will continue to shrink until they are received behind the main display screen, completing the shrinkage of the display screen.

[0014] The beneficial effects are: 1. When in the retracted state, the left and right display screens are hidden behind the main display screen, saving space, improving the utilization rate of the interior space of the car, and meeting the size requirements of the interior rearview mirror for different models;

[0015] 2. The automobile interior rearview mirror structure with automatic expansion function provided by the present invention utilizes a planetary gear train and a structure of a gear, rack, and connecting rod combination to realize the expansion and movement of the display screen;

[0016] 3. During the retraction process, the left and right display screens are first extended to the farthest position and then retracted to avoid movement interference with the main display screen;

[0017] 4. The display screen is driven to move forward and backward by the rack, and the movement of the display screen is precisely controlled by the retractable slide rail to ensure the smooth movement of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a vehicle interior rearview mirror structure with an automatic expansion function according to the present invention;

[0019] Figure 2 It is an enlarged schematic diagram of an automatic expansion component of an automobile interior rearview mirror structure with an automatic expansion function according to the present invention;

[0020] Figure 3 It is a schematic diagram of a retracted state of a vehicle interior rearview mirror structure with an automatic expansion function according to the present invention;

[0021] Figure 4 The present invention is a schematic diagram of an extended state of a vehicle interior rearview mirror structure with an automatic expansion function.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Main display screen frame assembly; 2. Left display screen frame assembly; 3. Right display screen frame assembly; 4. Retractable slide rail; 5. Connecting rod; 6. Ring gear; 7. Sun gear; 8. Planetary gear; 9. Bevel gear; 10. Rack; 11. Rotating motor; 12. Outer teeth of ring gear; 13. Back shell. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be further described below in conjunction with the accompanying drawings:

[0027] like Figure 1-4 As shown, a car interior rearview mirror structure with an automatic expansion function, the car interior rearview mirror structure with an automatic expansion function is composed of a display screen assembly, an automatic expansion wheel set and a rear shell 13;

[0028] The automatic expansion wheel set is arranged inside the rear housing 13, and the automatic expansion wheel set is composed of a ring gear 6, a sun gear 7 and a planetary gear 8. The wheel edge of the sun gear 7 is meshedly connected with two symmetrically arranged planetary gears 8. The inner side surface of the ring gear 6 is evenly provided with inner ring teeth, and the inner ring teeth are meshedly connected with the planetary gears 8.

[0029] The display screen assembly consists of a main display screen frame group 1, a left display screen frame group 2 and a right display screen frame group 3. Two groups of ring gear external teeth 12 are provided on the outer side surface of the ring gear 6. The ring gear external teeth 12 are meshed with a bevel gear 9, and the bevel gear 9 is meshed with a rack 10. One end of the rack 10 is installed on the back of the main display screen frame group 1. The two planetary gears 8 are respectively connected to the left display screen frame group 2 and the right display screen frame group 3 through a connecting rod 5. A rotating motor 11 for driving the ring gear 6 is provided on the back side of the sun gear 7, and the rotating motor 11 is connected to the ring gear 6.

[0030] In this embodiment, two groups of telescopic slide rails 4 for limiting the sliding of the left display screen frame group 2 and the right display screen frame group 3 are installed on the inner shell wall of the rear shell 13, and slide rail mounting blocks are installed on the back of the left display screen frame group 2 and the right display screen frame group 3, and the slide rail mounting blocks are installed on the telescopic slide rails 4.

[0031] In this embodiment, the bevel gear 9 is rotatably mounted in the rear housing 13 via the bevel gear shaft.

[0032] In this embodiment, the ring gear 6 is rotatably mounted to one end of the connecting rod 5 via the ring gear shaft, and a connecting rod end shaft is provided on the back of the left display screen frame group 2 and the right display screen frame group 3. The left display screen frame group 2 and the right display screen frame group 3 are rotatably mounted to the other end of the connecting rod 5 via the connecting rod end shaft.

[0033] In this embodiment, the main display screen frame group 1 consists of a main screen frame and a main display screen installed on the front side of the main screen frame. Left and right screen frame grooves are set on both sides of the main screen frame, and the left display screen frame group 2 and the right display screen frame group 3 are respectively set in the left and right screen frame grooves.

[0034] In this embodiment, the back of the main display screen frame assembly 1 is connected to the inner wall of the rear housing 13 via a telescopic shaft.

[0035] In the above structure, when the display screen is not unfolded, the planetary gear 8 is inclined with the horizontal direction, the connecting rod 5 is in a retracted state, the left display screen frame group 2 and the right display screen frame group 3 are retracted behind the main display screen frame group 1, and the sun gear 7 is fixed. When the left and right display screens need to be unfolded, the rotating motor 11 drives the gear ring 6 to rotate counterclockwise, and then drives the two planetary gears 8 to rotate counterclockwise, and the connecting rod 5 and the left and right display screens are also unfolded. When the planetary gear 8 rotates until the line connecting the two planetary gear axes is parallel to the horizontal direction, the connecting rod 5 is unfolded to the maximum distance, and the left and right display screens are also unfolded to the farthest. At this time, there is a certain gap between the left and right display screens and the main display screen, thereby ensuring that the main display screen frame group has enough space to move, and the outer gear ring teeth 12 on the gear ring 6 have not yet contacted the bevel gear 9, so the bevel gear 9 does not rotate at this time;

[0036] When the rotating system continues to rotate counterclockwise, the outer teeth 12 of the gear ring contact the bevel gear 9, driving the bevel gear 9 to rotate, and then driving the rack 10 to move backward, thereby driving the main display screen frame assembly 1 to move backward. During this process, the connecting rod 5 passes the maximum expansion position, driving the left and right display screens to shrink toward the middle, and clamping the main display screen 1, completing the expansion of the display screen assembly;

[0037] When the left and right display screens need to be folded up, the rotary motor rotates clockwise to drive the rotating system to rotate, and the main display screen is driven forward by the rack 10. During this process, the connecting rod 5 will drive the left and right display screens to expand to the maximum distance on both sides to avoid interference between the left and right display screens and the main display screen. After passing the maximum expansion position, as the planetary gear rotates, the left and right display screens will continue to shrink until they are received behind the main display screen, completing the shrinking action of the display screen.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle interior rearview mirror structure with automatic expansion function, characterized in that: It includes a display screen assembly, an automatic expansion wheel set and a rear shell, wherein the automatic expansion wheel set is arranged inside the rear shell, and the automatic expansion wheel set consists of a gear ring, a sun gear and a planetary gear, the wheel edge of the sun gear is meshingly connected with two symmetrically arranged planetary gears, the inner ring side surface of the gear ring is evenly provided with inner ring teeth, and the inner ring teeth are meshingly connected with the planetary gears, the display screen assembly consists of a main display screen frame group, a left display screen frame group and a right display screen frame group, two groups of gear ring outer teeth are arranged on the outer ring side surface of the gear ring, the outer teeth of the gear ring are meshingly connected with a bevel gear, and the bevel gear is meshingly connected with a rack, one end of the rack is installed on the back of the main display screen frame group, the two planetary gears are respectively connected to the left display screen frame group and the right display screen frame group through a connecting rod, and a rotating motor for driving the gear ring is arranged on the back side of the sun gear, and the rotating motor is connected to the gear ring; Two sets of telescopic slide rails are installed on the inner shell wall of the rear shell for limiting the sliding of the left display screen frame group and the right display screen frame group. The backs of the left display screen frame group and the right display screen frame group are both installed with slide rail mounting blocks, and the slide rail mounting blocks are installed on the telescopic slide rails; The bevel gear is rotatably mounted in the rear housing via the bevel gear shaft.

2. The vehicle interior rearview mirror structure with automatic expansion function according to claim 1, characterized in that: The ring gear is rotatably mounted to one end of the connecting rod via the ring gear shaft, and a connecting rod end shaft is provided on the back of the left display screen frame group and the right display screen frame group. The left display screen frame group and the right display screen frame group are both rotatably mounted to the other end of the connecting rod via the connecting rod end shaft.

3. The vehicle interior rearview mirror structure with automatic expansion function according to claim 1, characterized in that: The main display screen frame group consists of a main screen frame and a main display screen installed on the front side of the main screen frame. Left and right screen frame grooves are arranged on both sides of the main screen frame. The left display screen frame group and the right display screen frame group are respectively arranged in the left and right screen frame grooves.

4. The vehicle interior rearview mirror structure with automatic expansion function according to claim 1, characterized in that: The back of the main display screen frame assembly is connected to the inner side wall of the rear shell through a telescopic shaft.

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