A six-way rotation mechanism for a vehicle display screen

Abstract

The application discloses a six-direction rotating mechanism for a vehicle-mounted display screen. The six-direction rotating mechanism comprises a first fixed spherical support, a fixed base assembly, a rotating shaft pressing plate, a rotating drive motor assembly and a motion mechanism fixed support. The rotating drive motor assembly and the rotating shaft pressing plate are fixed on the motion mechanism fixed support. The display screen is fixed on one side of the first fixed spherical support. The other side of the first fixed spherical support is movably connected with the fixed base assembly. The six-direction rotating mechanism adopts a DC motor and a worm gear deceleration mechanism, and a ball head composite rotating shaft to realize six-angle adjustment of the vehicle-mounted display screen. The six-direction rotating mechanism can guarantee reliable structure, smooth movement and low noise, and can meet various functional and test requirements of automobile interiors.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automotive interior, and particularly relates to a six-way rotating mechanism for a vehicle-mounted display screen. BACKGROUND

[0002] Nowadays, automobiles have entered the intelligent era, and most of the current vehicle-mounted display screens are fixedly installed, and some vehicle models have single-angle (0 to 90°) two-grade adjustable vehicle-mounted display screens, but the existing vehicle-mounted display screens have the following defects:

[0003] 1. The angle adjustment is single, and cannot bring a large field of view effect;

[0004] 2. When sunlight shines on the display screen and the screen content cannot be seen, the strong light cannot be avoided at a specific angle as required;

[0005] 3. When driving, the distance between the driver and the screen is fixed, and the driver will frequently turn his head to look at the screen, which exists a driving safety hazard. SUMMARY

[0006] The purpose of the application is to solve the problems in the background art, and provide a six-way rotating mechanism for a vehicle-mounted display screen.

[0007] The technical scheme adopted by the application is: a six-way rotating mechanism for a vehicle-mounted display screen, comprising a first fixed spherical support, a fixed base assembly, a rotating shaft pressing plate, a rotating drive motor assembly, a motion mechanism fixed support, the rotating drive motor assembly and the rotating shaft pressing plate are fixed on the motion mechanism fixed support, the display screen is fixed on one side of the first fixed spherical support, and the other side of the first fixed spherical support is movably connected with the fixed base assembly;

[0008] The fixed base assembly comprises a display screen connector, a circular fixed support, a second fixed spherical support, a gear ring top rod, a spherical support cover, a second connecting shaft, a direct current motor and a second worm gear reduction transmission shaft;

[0009] The second connecting shaft is assembled on the spherical support cover, the spherical support cover is clamped on the second fixed spherical support, the combination of the second fixed spherical support and the spherical support cover is installed and fixed on the circular fixed support, and the circular fixed support and the display screen connector are rigidly connected;

[0010] Two groups of driving direct current motors, a second worm gear reduction transmission shaft and a gear ring top rod are installed in the combination of the second fixed spherical support and the spherical support cover, the two groups of driving direct current motors are meshed with the second worm gear reduction transmission shaft and the gear ring top rod respectively, one end of the two gear ring top rods is slidably connected with a sliding groove in the second fixed spherical support, and the other end of the gear ring top rod is hingedly connected to the first fixed spherical support.

[0011] Further preferably, the angle between the line connecting the ball center of the ball head of the two toothed ring top rods and the ball center of the second fixed spherical support is 90°.

[0012] Further preferably, the sliding groove is an arc-shaped sliding groove structure with an arc consistent with the arc of the inner wall of the second fixed spherical support.

[0013] Further preferably, the angle between the line connecting the two extreme positions of the two toothed ring top rods on the sliding groove and the central angle of the sliding groove is alpha, and the range of alpha is -30° to 30°.

[0014] Further preferably, the first fixed spherical support includes a spherical shell and a connecting plate, the spherical shell is connected with the second fixed spherical support, and the outer wall of the second fixed spherical support is attached to the inner wall of the spherical shell; the connecting plate is a rectangular box-shaped connecting structure for connecting the inner side of the display screen.

[0015] Further preferably, the rotary drive motor assembly includes a drive motor shell, a motor installed in the drive motor shell, a worm gear reduction gear ring, a tapered tooth connector, and a first worm gear reduction transmission shaft, the motor drives the worm gear reduction gear ring through the first worm gear reduction transmission shaft, the worm gear reduction gear ring is rigidly connected with the tapered tooth connector, and the tapered tooth connector is rigidly connected with the display screen connector through the first connecting shaft and the spring.

[0016] Further preferably, the rotary drive motor assembly further includes a fixed motor front cover and a fixed motor rear cover to seal both ends of the drive motor shell.

[0017] Further preferably, the display screen connector is provided with a limiting rod, the drive motor shell is provided with an arc-shaped limiting groove first limiting end and an arc-shaped limiting groove second limiting end, the angle between the arc-shaped limiting groove first limiting end and the arc-shaped limiting groove second limiting end is 90°, and the limiting rod is respectively limited to correspond to the landscape and portrait states of the display screen through the arc-shaped limiting groove first limiting end and the arc-shaped limiting groove second limiting end.

[0018] Further preferably, the motion mechanism fixed support is installed and fixed on the instrument panel through screws and clips.

[0019] Further preferably, the rotary shaft pressing plate is fixed on the motion mechanism fixed support through screws.

[0020] The DC motor and worm gear reduction mechanism, as well as the ball head composite rotating shaft, are adopted to realize six-angle adjustment of the vehicle-mounted display screen, which can ensure reliable structure, smooth movement, and low noise, and meet various functions and test requirements of automotive interiors.

[0021] The beneficial effects of the present application are as follows:

[0022] 1. The display screen is adjusted by 0 to 90° in two grades around the X axis, the horizontal and vertical screen switching can be realized, the vehicle-mounted display screen is automatically rotated from horizontal screen to vertical screen when the vehicle starts, the sense of ceremony is embodied, the vertical screen is used when driving, and the horizontal screen is used when relaxing and entertaining, which can bring the effect of large visual angle;

[0023] 2. The display screen is adjusted in multiple grades within a certain angle range around the Y axis, the screen can be rotated by a certain angle forward and backward to avoid strong light when the sunlight shines on the display screen and the screen content cannot be seen;

[0024] 3. The display screen is adjusted in multiple grades within a certain angle range around the Z axis, the screen can be turned to the main driver when driving, which can reduce the sight distance and the driver's frequent turning of head when looking at the screen, and reduce the driving safety hazard; when not driving, the display screen can also be automatically rotated left and right according to the sensing of the front seat personnel. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a horizontal screen posture schematic diagram of the display screen on the instrument panel of the present application;

[0026] Figure 2 It is a vertical screen posture schematic diagram of the display screen on the instrument panel of the present application;

[0027] Figure 3 It is a structure schematic diagram of the six-direction rotating mechanism of the present application;

[0028] Figure 4 It is a cross-sectional view of the rotating drive motor assembly of the present application;

[0029] Figure 5 It is an exploded view of the rotating drive motor assembly of the present application;

[0030] Figure 6 It is a cross-sectional view of the fixed base assembly of the present application;

[0031] Figure 7 It is an exploded view of the fixed base assembly of the present application;

[0032] Figure 8 It is a position schematic diagram of the gear ring and the top rod and the sliding groove of the six-direction rotating mechanism of the present application;

[0033] Figure 9 It is an inward top view of the first fixed spherical support of the six-direction rotating mechanism of the present application.

[0034] In the diagram, 1-display screen, 2-instrument panel, 3-motion mechanism mounting bracket, 4-rotary drive motor assembly (4.1-drive motor housing, b-first limiting end of arc-shaped limiting groove, c-second limiting end of arc-shaped limiting groove, 4.2-motor, 4.3-first connecting shaft, 4.4-spring, 4.5-worm gear reduction ring, 4.6-connector with tapered teeth, 4.7-first worm gear reduction transmission shaft, 4.8-fixed motor front cover, 4.9-fixed motor rear cover), 5 - Rotary shaft pressure plate, 6- Fixed base assembly (6.1- Display screen connector, a- Limiting rod, 6.2- Circular fixed bracket, 6.3- Second fixed spherical support, 6.31- Slide groove, 6.4- Gear ring top rod, 6.5- Spherical support cover, 6.6- Second connecting shaft, 6.7- Screw, 6.8- DC motor, 6.9- Second worm gear reducer transmission shaft), 7- First fixed spherical support (7.1- Spherical shell, 7.2- Connecting plate), 8- Screw. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but these descriptions do not constitute a limitation on the present invention.

[0036] like Figures 1-3 As shown, the present invention includes a first fixed spherical support 7, a fixed base assembly 6, a rotating shaft pressure plate 5, a rotating drive motor assembly 4, and a motion mechanism fixed support 3. The rotating drive motor assembly 4 and the rotating shaft pressure plate 5 are fixed on the motion mechanism fixed support 3. The display screen 1 is fixed on one side of the first fixed spherical support 7, and the other side of the first fixed spherical support 7 is movably connected to the fixed base assembly 6.

[0037] like Figures 6-9 As shown, the fixed base assembly 6 includes a display screen connector 6.1, a circular fixed bracket 6.2, a second fixed spherical support 6.3, a gear ring push rod 6.4, a spherical support cover 6.5, a second connecting shaft 6.6, a DC motor 6.8, and a second worm gear reducer transmission shaft 6.9.

[0038] The second connecting shaft 6.6 is assembled on the spherical support cover 6.5, the spherical support cover 6.5 is snapped onto the second fixed spherical support 6.3, the assembly consisting of the second fixed spherical support 6.3 and the spherical support cover 6.5 is installed and fixed on the circular fixed bracket 6.2, and the circular fixed bracket 6.2 is rigidly connected to the display connector 6.1;

[0039] The second fixed spherical support 6.3 and the spherical support cover 6.5 are internally mounted with two sets of driving DC motors 6.8 and a second worm gear reduction transmission shaft 6.9 and a gear ring top rod 6.4, the two sets of driving DC motors 6.8 are respectively engaged with the second worm gear reduction transmission shaft 6.9 and the gear ring top rod 6.4, one end of the two gear ring top rods 6.4 is slidingly connected with the sliding groove 6.31 in the second fixed spherical support 6.3, and the other end of the gear ring top rod 6.4 is hingedly connected to the first fixed spherical support 7.

[0040] As shown in Figure 8 , the included angle between the line connecting the ball centers of the hinged ball heads of the two gear ring top rods 6.4 and the ball center of the second fixed spherical support 6.3 is 90°.

[0041] As shown in Figure 8 , the sliding groove 6.31 is an arc-shaped sliding groove structure with an arc consistent with the inner wall arc of the second fixed spherical support 6.3.

[0042] As shown in Figure 8 , the included angle between the line connecting the two limit positions of the two gear ring top rods 6.4 on the sliding groove 6.31 and the central angle of the sliding groove 6.31 is α, and the range of α is -30°-30°.

[0043] As shown in Figure 6 , the first fixed spherical support 7 includes a spherical shell 7.1 and a connecting plate 7.2, the spherical shell 7.1 is in contact with the second fixed spherical support 6.3, and the outer wall of the second fixed spherical support 6.3 is fitted with the inner wall of the spherical shell 7.1; the connecting plate 7.2 is a rectangular box-shaped connecting structure for connecting the inner side of the display screen 1.

[0044] As shown in Figures 4-5 , the rotary drive motor assembly 4 includes a drive motor housing 4.1, a motor 4.2, a worm gear reduction gear ring 4.5, a tapered tooth connector 4.6, and a first worm gear reduction transmission shaft 4.7 installed in the drive motor housing 4.1, the motor 4.2 is drivingly connected to the worm gear reduction gear ring 4.5 through the first worm gear reduction transmission shaft 4.7, the worm gear reduction gear ring 4.5 is rigidly connected with the tapered tooth connector 4.6, and the tapered tooth connector 4.6 is rigidly connected with the display screen connector 6.1 through the first connecting shaft 4.3 and the spring 4.4.

[0045] The rotary drive motor assembly 4 further includes a fixed motor front cover 4.8 and a fixed motor rear cover 4.9 to seal both ends of the drive motor housing 4.1.

[0046] As shown in Figure 5As shown, the display screen connector 6.1 is provided with a limiting rod a, the driving motor housing 4.1 is provided with an arc-shaped limiting groove first limiting end b and an arc-shaped limiting groove second limiting end c, the included angle between the arc-shaped limiting groove first limiting end b and the arc-shaped limiting groove second limiting end c is 90°, and the limiting rod a is limited and corresponds to the landscape and portrait two states of the display screen 1 respectively through the arc-shaped limiting groove first limiting end b and the arc-shaped limiting groove second limiting end c.

[0047] The motion mechanism fixed support 3 is installed and fixed on the instrument panel 2 through screws and clips.

[0048] The rotating shaft pressing plate 5 is fixed on the motion mechanism fixed support 3 through screws 8.

[0049] As shown, Figures 4-5 In order to make the display screen 1 rotate around the X axis between 0 and 90°, the display screen 1 can be automatically rotated from landscape to portrait at startup and automatically rotated from portrait to landscape at shutdown through program setting, or the display screen 1 can be switched between landscape and portrait through physical keys, virtual keys on the display screen 1 and voice control of the motor 4.2 rotation in the powered state. In the normal state, the display screen connector 6.1, the motor 4.2, the worm gear reduction gear ring 4.5, the connector with taper teeth 4.6, the first worm gear and worm reduction transmission shaft 4.7, the fixed motor front cover 4.8 and the fixed motor rear cover 4.9 installed in the driving motor housing 4.1 are engaged together through the first connecting shaft 4.3 and the spring 4.4, and at this time, the engagement can be regarded as rigid connection. The motor 4.2 drives the worm gear reduction gear ring 4.5 to rotate forward and backward through the first worm gear and worm reduction transmission shaft 4.7, thereby driving the connector with taper teeth 4.6 and the worm gear reduction gear ring 4.5 to be rigidly connected, the connector with taper teeth 4.6 and the display screen connector 6.1 are engaged, so that the display screen connector 6.1 rotates forward and backward, thereby also enabling the display screen 1 fixed on the display screen connector 6.1 to rotate between 0 and 90°.

[0050] The motor 4.2 rotates the display screen connector 6.1 synchronously, the limiting rod a on the display screen connector 6.1 moves between the arc-shaped limiting groove first limiting end b and the arc-shaped limiting groove second limiting end c features on the driving motor housing 4.1, the landscape is switched to the portrait, the display screen 1 rotates clockwise, the display screen 1 rotates 90°, the a feature collides with the b feature, the physical blockage, and the motor 4.2 stops working. Conversely, the portrait is switched to the landscape, the display screen 1 rotates counterclockwise, the display screen 1 rotates 90°, the a feature collides with the c feature, the physical blockage, and the motor 4.2 stops working.

[0051] When the display screen 1 encounters an obstacle during rotation from 0 to 90°, the display screen 1 does not move, and the motor 4.2 continues to rotate, at which time the tapered tooth connector 4.6 and the display screen connector 6.1 will overcome the pressure of the spring 4.4 to produce slip. This function can also be used when the instrument panel 2 is powered off and the motor 4.2 does not work, manually rotating the display screen 1 to switch the display screen between 0 and 90°, so that the parts on the back of the display screen 1 can be repaired.

[0052] As shown in Figures 6-9 , the working principle of the display screen 1 is adjusted in multiple gears within a certain angle range around the Y axis and the Z axis: the spherical shell 7.1 of the first fixed spherical support 7 and the second fixed spherical support 6.3 are matched as two hemispheres, the spherical support cover 6.5 is clamped on the second fixed spherical support 6.3, the combination of the second fixed spherical support 6.3 and the spherical support cover 6.5 is fixed on the circular fixed support 6.2 by clips and screws 6.7, and the circular fixed support 6.2 and the display screen connector 6.1 are rigidly connected by screws.

[0053] The combination of the second fixed spherical support 6.3 and the spherical support cover 6.5 is internally provided with two groups of driving DC motors 6.8, a second worm gear reduction transmission shaft 6.9 and a gear ring top rod 6.4, the second connecting shaft 6.6 is assembled on the spherical support cover 6.5, and the second connecting shaft 6.6 can rotate around the B axis Figure 7 、 Figure 9 as shown) on the spherical support cover 6.5, the first fixed spherical support 7 can rotate in the direction of the A axis Figure 7 、 Figure 9 as shown) around the second connecting shaft 6.6, and the gear ring top rod 6.4 can rotate around the Y axis and the Z axis in the assembly hole of the first fixed spherical support 7; the Y axis and the Z axis on the two gear ring top rods 6.4 are 90° apart and control the up-down and left-right rotation of the display screen 1 respectively.

[0054] When the display screen 1 needs to be adjusted in left-right and up-down rotation, the DC motor 6.8 can be controlled by physical buttons, virtual buttons on the display screen 1 and voice to rotate, and the DC motor 6.8 drives the gear ring top rod 6.4 to rise or fall after being reduced by the second worm gear reduction transmission shaft 6.9. If the display screen 1 needs to be rotated towards the driver direction (the display screen 1 rotates clockwise around the Z axis), after physical or voice input instruction, the DC motor 6.8 operates to drive the upper gear ring top rod 6.4 Figure 9 as shown) to run outward, (all three axes pass through the centers of the two spherical supports of the first fixed spherical support 7 and the second fixed spherical support 6.3), at this time the first fixed spherical support 7 will rotate around the Z axis, (the composite motion of the upper axis A and the axis B produces a virtual Z axis which is the same as the lower Z axis and both pass through the center), so as to realize the left rotation of the display screen 1. Conversely, the rotation adjustment principles in other directions are the same.

[0055] That which is not described in detail in the specification is considered to be of prior art to those skilled in the art.

Claims

1. A six-way rotating mechanism for an in-vehicle display screen, characterized in that: It includes a first fixed spherical support (7), a fixed base assembly (6), a rotating shaft pressure plate (5), a rotating drive motor assembly (4), and a motion mechanism fixed support (3). The rotating drive motor assembly (4) and the rotating shaft pressure plate (5) are fixed on the motion mechanism fixed support (3). The display screen (1) is fixed on one side of the first fixed spherical support (7), and the other side of the first fixed spherical support (7) is movably connected to the fixed base assembly (6). The fixed base assembly (6) includes a display screen connector (6.1), a circular fixed bracket (6.2), a second fixed spherical support (6.3), a gear ring top rod (6.4), a spherical support cover (6.5), a second connecting shaft (6.6), a DC motor (6.8), and a second worm gear reducer transmission shaft (6.9). The second connecting shaft (6.6) is assembled on the spherical support cover (6.5), the spherical support cover (6.5) is snapped onto the second fixed spherical support (6.3), the assembly consisting of the second fixed spherical support (6.3) and the spherical support cover (6.5) is installed and fixed on the circular fixed bracket (6.2), the circular fixed bracket (6.2) and the display screen connector (6.1) are rigidly connected; The assembly consisting of the second fixed spherical support (6.3) and the spherical support cover (6.5) is internally equipped with two sets of drive DC motors (6.8), a second worm gear reducer transmission shaft (6.9), and a gear ring push rod (6.4). The two sets of drive DC motors (6.8) are respectively meshed with the gear ring push rod (6.4) through the second worm gear reducer transmission shaft (6.9). One end of the two gear ring push rods (6.4) is slidably connected to the sliding groove (6.31) in the second fixed spherical support (6.3), and the hinged ball head at the other end is hinged to the first fixed spherical support (7). The angle between the line connecting the center of the hinged ball joint of the two gear ring top rods (6.4) and the center of the ball of the second fixed spherical support (6.3) is 90°; The slide (6.31) is an arc-shaped slide structure whose curvature is consistent with the curvature of the inner wall surface of the second fixed spherical support (6.3); The angle between the two extreme positions on the slide groove (6.31) where the two gear ring push rods (6.4) are located and the line connecting the central angle of the slide groove (6.31) is α, and the range of α is -30° to 30°. The first fixed spherical support (7) includes a spherical shell (7.1) and a connecting plate (7.2). The spherical shell (7.1) is in contact with the second fixed spherical support (6.3), and the outer wall of the second fixed spherical support (6.3) is in contact with the inner wall of the spherical shell (7.1). The connecting plate (7.2) is a rectangular box-shaped connecting structure used to connect the inner side of the display screen (1). The rotary drive motor assembly (4) includes a drive motor housing (4.1) and a motor (4.2), a worm gear reducer ring (4.5), a tapered tooth connector (4.6), and a first worm gear reducer transmission shaft (4.7) installed in the drive motor housing (4.1). The motor (4.2) drives the worm gear reducer ring (4.5) through the first worm gear reducer transmission shaft (4.7). The worm gear reducer ring (4.5) is rigidly connected to the tapered tooth connector (4.6). The tapered tooth connector (4.6) is rigidly connected to the display screen connector (6.1) through a first connecting shaft (4.3) and a spring (4.4). The display connector (6.1) is provided with a limiting rod (a), and the drive motor housing (4.1) is provided with an arc-shaped limiting groove first limiting end (b) and an arc-shaped limiting groove second limiting end (c). The included angle between the arc-shaped limiting groove first limiting end (b) and the arc-shaped limiting groove second limiting end (c) is 90°. The limiting rod (a) limits the horizontal and vertical states of the corresponding display screen (1) to the arc-shaped limiting groove first limiting end (b) and the arc-shaped limiting groove second limiting end (c) respectively.

2. The six-way rotating mechanism for an in-vehicle display screen according to claim 1, characterized in that: The rotary drive motor assembly (4) also includes a fixed motor front cover (4.8) and a fixed motor rear cover (4.9) to seal both ends of the drive motor housing (4.1).

3. The six-way rotating mechanism for an in-vehicle display screen according to claim 1, characterized in that: The motion mechanism fixed support (3) is fixed to the instrument panel (2) by screws and clips.

4. A six-way rotating mechanism for an in-vehicle display screen according to claim 1, characterized in that: The rotating shaft pressure plate (5) is fixed to the motion mechanism fixed support (3) by screws (8).

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