Vehicle-mounted turnover screen movement mechanism system

Abstract

The invention discloses a vehicle-mounted turnover screen movement mechanism system which comprises a turnover screen shell, a display screen assembly, gear transmission boxes, a motor driving PCBA and a locking mechanism, the display screen assembly is arranged at the bottom of the turnover screen shell, a containing groove is formed in one side of the turnover screen shell, the gear transmission boxes are distributed and installed on the left side and the right side of the containing groove, and the motor driving PCBA is arranged in the containing groove. The gear transmission box penetrates through the containing groove to be fixedly provided with the display screen assembly so that the display screen assembly can be rotationally adjusted, and the vehicle-mounted turnover screen movement mechanism system can turn over and open the display screen assembly of the vehicle-mounted turnover screen to any angle to be suspended and retracted; by adjusting motor driving time and gear transmission box parameters, vehicle vibration impact is resisted; a locking function is achieved, and the display screen assembly can be reset manually; the turnover system is long in service life and low in noise. And the device is suitable for various vehicle types and has wide applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile display screens, and in particular to a vehicle-mounted flip screen motion mechanism system. Background Art

[0002] As people's material needs grow, more and more consumers choose to buy vehicles with on-board flip screens, and many car owners choose to install on-board flip screens themselves. However, the flip motion mechanisms of many on-board flip screens on the market cannot meet the safety and use requirements of cars under complex working conditions: flip open and hover at any angle, withstand vehicle vibration and impact, anti-shake when the screen is opened, lock when folded, automatically reset after power off and then on, long life and low noise. In order to solve the above problems, the present invention provides a vehicle-mounted flip screen motion mechanism system that can meet the use requirements and safety of the vehicle-mounted ceiling under rapid acceleration and deceleration, vibration and impact, and complex working conditions. The present invention adopts a modular design, is easy to assemble, and has a wide range of applications. It can be flexibly arranged on the roof interior, sunroof, flip screen, and rear entertainment screen assembly of the entire vehicle, thereby ensuring the safety of the vehicle-mounted flip screen.

[0003] The gear transmission mechanisms commonly used at present have many gears, large size, high noise, and complex assembly. The present invention adopts a transmission scheme combining a lead screw, a rack, and a gear, which has the core competitiveness of small overall size, easy assembly, low noise, long life, impact resistance, vibration resistance, stable operation, and strong damping, and meets the requirements of vehicle regulations.

[0004] Therefore, it is necessary to provide a vehicle-mounted flip screen motion mechanism system. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a vehicle-mounted flip screen motion mechanism system, which is mainly used to realize the flip opening, folding and locking functions of the display screen assembly, and at the same time realizes the functions of resistance to vehicle vibration and impact, anti-shake when the screen is opened, automatic reset after power failure and power on, long life, low noise and firm locking, etc., to meet the safety requirements. It has the core competitiveness of low noise, long life, impact resistance, vibration resistance, stable operation and damping maintenance, and meets the requirements of vehicle regulations.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a vehicle-mounted flip screen motion mechanism system, including a flip screen housing, a display screen assembly, a gear transmission box, a motor-driven PCBA, and a locking mechanism, the bottom of the flip screen housing is set as a display screen assembly, one side of the flip screen housing is set as a receiving slot, and the left and right sides of the receiving slot are both distributed and installed with gear transmission boxes, the gear transmission box passes through the receiving slot to fix the display screen assembly to adjust the rotation of the display screen assembly, and the upper part of the flip screen housing is symmetrically provided with locking mechanisms, after the gear transmission box rotates to retract the display screen assembly, the locking mechanism passes through the flip screen housing and locks on both sides of the display screen assembly to fix and limit the display screen assembly, and the side of the flip screen housing away from the receiving slot is set as a motor-driven PCBA, which is used to control the driving operation of the gear transmission box and the locking movement of the locking mechanism; The gear transmission box includes a transmission box housing, a motor, a screw output shaft, a rack nut seat, a bushing, a damping plate, a main rotating shaft, and a main gear. The transmission box housing is installed on the upper part of the flip screen housing by screws. One side of the main rotating shaft is set as a fixed platform for installing the display screen assembly. The other side of the main rotating shaft passes through the surface of the transmission box housing and is fixedly installed with the main rotating shaft through a bushing. The main rotating shaft is rotatably installed with the transmission box housing through a bushing. The main rotating shaft extends along its axial direction to the inside of the transmission box housing and is rotatably installed with the transmission box housing through a bearing seat. An angle sensor is provided between the end face of the main rotating shaft and the inside of the transmission box housing to adjust the hovering of the display screen assembly at any angle. The main gear is assembled on the rotating shaft through spline interference fit, and a screw output shaft is arranged in the vertical direction of the main rotating shaft. The screw output shaft extends out of the transmission box housing and is fixedly connected to a motor 1. A rack nut seat is slidably arranged on the screw output shaft, and the upper part of the rack nut seat is limited and slidably installed with the inner wall of the transmission box housing, and the rack nut seat is meshed and connected with the main gear. A limiting groove 1 is provided at the connection between the transmission box housing and the shaft sleeve 1, and a damping plate is plugged and installed at the bottom of the limiting groove 1, and a screw hole is provided at the top of the limiting groove 1, and an adjusting screw is installed with a thread inside the screw hole, so that the damping plate is abutted and adjusted by the adjusting screw through the threaded installation of the adjusting screw and the screw hole, so that the damping plate performs friction damping on the shaft sleeve 1.

[0007] Preferably, the locking mechanism includes an upper cover, a lower cover, a locking motor, a worm, gear two, gear three, a mounting plate, and an integrated rack. The upper cover and the lower cover are mounted by screws, and the lower cover is fixedly connected to the flip screen shell. The upper cover is provided with a locking motor, gear two and gear three inside, and the output end of the locking motor is provided with a worm, and the worm and gear two are driven by a turbine worm structure, and gear two is meshingly connected with gear three. The upper part of the lower cover is connected to the mounting plate by screws, and a slide rail one is symmetrically provided on the mounting plate, and an integrated rack is slidably installed on the slide rail one, and the locking gear is meshingly connected to the inside of the integrated rack, and the locking gear is fixedly connected to the mounting plate, and the locking gear is meshingly connected to gear three. A locking tongue is provided at the end of the integrated rack away from the locking motor, and the locking tongue extends out of the upper cover and the lower cover, and locking tongue travel sensors are respectively provided on both sides of the mounting plate along the sliding movement direction of the integrated rack.

[0008] Preferably, the integrated rack is arranged in a rectangular frame structure, and a rack is arranged inside the frame structure to mesh with the locking gear.

[0009] Preferably, a slide groove one is provided on the inner wall surface of the transmission box housing at the upper part of the rack nut seat, and the rack nut seat is slidably installed in the slide groove one.

[0010] Preferably, the main rotating shaft is provided as a hollow shaft structure, so as to allow the display screen harness to pass through the hollow shaft structure.

[0011] Preferably, the contact portion between the damping plate and the shaft sleeve 1 is made of nylon or POM.

[0012] Preferably, the angle sensor includes an induction magnet and a magnetoelectric induction encoding chip. The induction magnet is fixed to the end of the main rotating shaft inside the gear transmission box by a magnet clamp and rotates with the main rotating shaft. The magnetoelectric induction encoding chip is fixed inside the gear transmission box facing the induction magnet. The induction magnet and the magnetoelectric induction encoding chip convert the rotation angle of the main rotating shaft into an electrical signal through magnetoelectric induction and feed it back to the control circuit, which is used for electrically adjusting and controlling the opening, folding and locking of the display screen assembly, and for hovering the display screen assembly at any angle.

[0013] In summary, the present invention provides a vehicle-mounted flip screen motion mechanism system. The vehicle-mounted flip screen motion mechanism system of the present invention can flip the display screen assembly of the vehicle-mounted flip screen to any angle to hover and retract; by adjusting the motor driving time and the gear transmission box parameters, the flip opening angle and speed of the display screen assembly of the vehicle-mounted flip screen can be adjusted; the display screen assembly of the vehicle-mounted flip screen is anti-shake after opening, and is resistant to vehicle vibration and impact; it has a locking function, and the display screen assembly can be manually reset; the flip system has a long life and low noise. It is suitable for various models and has a wide range of applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the exploded view of the vehicle-mounted flip screen motion mechanism system of the present invention; Figure 2 It is a schematic diagram of the top structure of the vehicle-mounted flip screen motion mechanism system of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the gear transmission box of the present invention; Figure 4 It is a schematic structural diagram of an axial cross-sectional view of a gear transmission box motor of the present invention; Figure 5 It is a structural schematic diagram of the screw hole and the slide groove of the present invention; Figure 6 It is a schematic diagram of the structure of the damping plate, the limiting groove 1 and the adjusting screw of the present invention; Figure 7 It is a schematic diagram of the damping installation structure of the damping sheet and the main rotating shaft of the present invention; Figure 8 It is a schematic diagram of the structure of the angle sensor of the present invention installed inside the gear transmission box; Fig. 9 The locking mechanism explosion structure of the present invention is schematically shown in FIG. Figure 1 ; Fig.10 The locking mechanism explosion structure of the present invention is schematically shown in FIG. Figure 2 ; Fig.11 It is a schematic diagram of the cross-sectional structure of the locking mechanism and the display screen assembly lock installation of the present invention; Fig.12 It is a schematic structural diagram of the bottom of the flip screen housing of the present invention; Fig.13 It is a schematic diagram of the structure of the software logic block diagram of the vehicle-mounted flip screen motion mechanism system of the present invention; Fig.14 It is a schematic diagram of the electronic hardware block diagram of the vehicle-mounted flip screen motion mechanism system of the present invention; In the figure: flip screen shell 1, display screen assembly 2, gear transmission box 3, motor drive PCBA4, locking mechanism 5, accommodating groove 6, transmission box shell 7, motor 11, screw output shaft 12, rack nut seat 13, sleeve 14, damping plate 15, main rotating shaft 16, main gear 17, fixed platform 21, bearing seat 22, angle sensor 23, limit groove 1 24, screw hole 25, adjusting screw 26, upper cover 27, lower cover 31, locking motor 32, worm 33, gear 2 34, gear 3 46, mounting plate 35, integrated rack 36, locking gear 37, lock tongue 41, lock tongue travel sensor 42, slide groove 1 43, induction magnet 44, magneto-electric induction encoding chip 45, key module 47, upper shell 71, lower shell 72. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] like Figures 1 to 14 As shown: The present invention is a vehicle-mounted flip screen motion mechanism system, such as Figure 1 As shown: the whole system is divided into an active system including: a motor 11, a gear transmission box 3, a motor drive PCBA, and a key module 47. The motor drive PCBA in this embodiment preferably has models ZC-339 and RK3288; the driven system includes a display assembly 2; the locking system includes a locking motor 32, a reduction gear set (including a worm 33, a gear 2 34, a locking gear 37), an integrated rack 36, a lock tongue 41, and a lock tongue travel sensor 42; the active system is responsible for providing a driving force for the flipping motion of the driven system and performing speed, angle, time, etc. of its flipping motion The driven system is only assembled with the active system and is fixedly connected by means of screws, nuts, etc. The motor gear transmission box 3 assembly, motor drive PCBA, and key module 47 of the active system are fixed to the back of the flip screen housing 1 by screws and shock-absorbing pads; the motor 11, the gear transmission box 3 assembly, the locking mechanism 5, and the key module 47 are connected to the motor drive PCBA through a wiring harness, and the key module 47 inputs a signal to the motor drive PCBA, and the motor drive PCBA will output a PWM signal to the motor 11 after calculating according to the input instruction requirements, thereby realizing flipping and opening control.

[0017] The output end of the motor 11 on the active system is fixedly connected to a cylindrical screw. One end of the screw output shaft 12 of the motor 11 is inserted into the bearing seat 22 inside the gear transmission box 3. The rack nut seat 13 is assembled on the screw output shaft 12. The rotation of the output end of the motor 11 drives the screw output shaft 12 to rotate synchronously, thereby driving the rack nut seat 13 to move linearly on the screw output shaft 12, and changing the rotational motion of the motor 11 into the linear motion of the rack nut seat 13. The rack feature on the rack nut seat 13 is closely matched with the main gear 17. The main gear 17 is driven to rotate through the linear motion of the rack on the rack nut seat 13. The main rotating shaft 16 and the main gear 17 are assembled into a whole through spline interference fit. The rotation of the main gear 17 drives the main rotating shaft 16 to rotate together. The main rotating shaft 16 has a mounting platform structure, and the mounting platform is fixed to the display screen assembly 2 by screws. The rotation of the main rotating shaft 16 drives the display screen to flip, thereby realizing the flipping, opening and folding of the display screen assembly 2.

[0018] like Figures 3 to 6As shown: the gear transmission box 3 is internally provided with a bearing seat 22, a damping plate 15, a screw output shaft 12, a rack nut seat 13, a main rotating shaft 16, and a main gear 17; the driving principle of the gear transmission box 3 is: ① the screw output shaft 12 is fixedly installed by the motor 11, and the screw output shaft 12 drives the rack nut seat 13 to slide linearly; ② the linear motion of the rack nut seat 13 is converted into rotational motion through the rack driving gear; ③ the sliding friction between the damping plate 15 and the main rotating shaft 16 provides damping for the main rotating shaft 16.

[0019] like Figure 3 As shown, the transmission parts of the left and right sides of the gear transmission box 3 have the same structure, and the structure and operation principle of the gear transmission box 3 on the left side are taken as an example: the gear transmission box 3 assembly on the left side is mainly divided into a motor 11, a main rotating shaft 16, a transmission box housing 7, a rack nut seat 13, a bearing seat 22, a damping plate 15, a sleeve 14, an adjusting screw 26 and a screw output shaft 12, and the transmission box housing 7 is composed of an upper shell 71 and a lower shell 72 fixedly installed.

[0020] The transmission mode of the gear box 3 on the left is: In the first step, the rack part of the rack nut seat 13 is inserted into the slide groove of the lower shell 72, and the screw output shaft 12 is assembled with the thread in the rack nut seat 13. The rack nut seat 13 is divided into two parts, one is the nut seat that matches the screw output shaft 12, with internal threads; the other is the rack part, which is used to match the main gear 17. The rack nut seat 13 adopts a ball screw nut mechanism, which has stable operation, high transmission accuracy, and long service life.

[0021] In the second step, the screw output shaft 12 is sleeved on the rotating shaft of the motor 11 through an interference fit, and the motor 11 is inserted into the shell through the opening in the length direction of the lower shell 72. The other end of the screw output shaft 12 is inserted into the hole of the bearing seat 22 of the lower shell 72, and the drive motor is fixed from the inside with screws.

[0022] The third step is to insert the main rotating shaft 16 from the mounting hole at the front of the upper shell 71, and then assemble the sleeve 14 and the main gear 17 onto the main rotating shaft 16. The main gear 17 and the main rotating shaft 16 are interference fit, and the mounting hole on the fixed platform 21 is used to connect and fix the display screen. The main rotating shaft 16 is a hollow shaft, and the hollow shaft here is used to pass the display screen harness through to prevent the harness from twisting and tangling when the display screen rotates.

[0023] The fourth step is to assemble the adjustment screw 26 into the corresponding screw hole 25 of the upper shell 71, and press the damping plate 15 and the shaft sleeve 14 tightly, so as to provide a rotation damping force for the main rotating shaft 16 through the friction force generated by the damping plate 15 and the shaft sleeve 14, thereby providing a rotation damping for the gear shaft. The damping effect on the main rotating shaft can ensure that the display screen assembly 2 can remain stable and not rotate under external force and vibration after being flipped open. Then insert the bearing seat 22 into the corresponding groove of the lower shell 72 and install it coaxially with the main rotating shaft 16.

[0024] Step 5: Assemble the lower shell 72 and the upper shell 71 together by screws to form the gear transmission box 3 assembly. Figure 4 As shown in the cross-sectional view, the movement principle of the gear transmission box 3 is as follows: the output shaft of the motor 11 drives the screw output shaft 12 to rotate, the screw output shaft 12 drives the rack nut seat 13 to move linearly, the rack feature of the rack nut seat 13 slides in the slide groove 43 of the lower shell 72, the rack feature drives the main gear 17 to rotate, the main gear 17 drives the main rotating shaft 16 to rotate, thereby realizing the main rotating shaft 16 adjusting the display screen assembly 2 to rotate at any angle; the four mounting points distributed on the fixed platform 21 are used to fix with the display screen assembly 2, thereby driving the display screen to rotate.

[0025] Preferably, the motor 11 can be in various forms such as a brushed DC motor, a brushless DC motor, a planetary gear reduction motor, etc., and can be adjusted according to the customer's specific flipping and opening angle and time by adjusting the lead of the screw output shaft 12 of the gear transmission box 3, the module number of teeth of the rack on the rack nut seat 13, and the module number of teeth of the main gear 17 to match the corresponding motor's speed, torque, driving time, etc., thereby achieving the flipping and opening angle and speed adjustment of the vehicle-mounted flip screen display assembly 2.

[0026] like Figures 3 to 6 As shown in the cross section of the main rotating shaft 16, the adjusting screw 26 presses the damping plate 15 and the sleeve 14 to generate friction, thereby providing rotational damping force for the main rotating shaft 16. The contact portion of the damping plate 15 and the sleeve 14 can be made of nylon, POM and other materials, and the surface roughness is adjusted according to the size of the damping force. At the same time, the clamping force between the damping sleeve and the bearing seat 22 can also be adjusted by adjusting the screw 26 to assist in adjusting the size of the damping force.

[0027] Preferably, the motor 11 is selected to have a single product noise of about 37db, and the motor 11 is covered with a rubber sleeve for vibration isolation to avoid rigid contact with the gear transmission box 3 shell and reduce the overall noise. When the structural load is running, the motor 11 runs at the highest speed, which is the best noise usage range of the motor; the transmission mechanism inside the gear transmission box 3 uses a worm 33 to reduce speed, providing a large reduction ratio, which can help the transmission gear reduce noise more effectively; thereby controlling the operating noise below 40db.

[0028] One operation cycle of the vehicle-mounted flip screen is about 7s (calculated based on an opening angle of 105° and a gear shaft speed of 2.5r / min (i.e., 15° / s)), and the motor life is about 2000h, so the number of times the vehicle-mounted flip screen is flipped and opened is 2000*60*60 / 7=1028571, about 1 million times. Therefore, the vehicle-mounted flip screen flipping system of the present invention has a long service life.

[0029] The gear transmission box 3 and the angle sensor 23 on the right are installed as follows: Figure 8 As shown, in this embodiment, an angle sensor 23 is preferably installed inside the gear transmission box 3 on the right side. The angle sensor 23 includes an induction magnet 44 and a magneto-electric induction encoding chip 45. The induction magnet 44 is fixed to the shaft end of the main rotating shaft 16 by a magnet clamp and rotates with the main rotating shaft 16. The magneto-electric induction encoding chip 45 is fixed in the upper shell 71 of the gear transmission box 3 and is directly opposite to the induction magnet 44. Through the magneto-electric induction of the induction magnet 44 and the magneto-electric induction encoding chip 45, the rotation angle of the main rotating shaft 16 is converted into an electrical signal and fed back to the control circuit for electric adjustment and control of the display screen assembly 2 to open, fold and lock, and to achieve hovering at any angle; preferably, the flip angle adjustment accuracy of the magneto-electric induction encoding chip 45 can reach ±0.5°.

[0030] The specific structure and assembly of the locking mechanism 5 are as follows: Figures 9 to 11 As shown, the locking mechanism 5 includes an upper cover 27, a lower cover 31, a locking motor 32, a worm 33, a gear set, a locking gear 37, a mounting plate 35, an integrated rack 36, and a locking tongue 41. The gear set includes a second gear 34 and a third gear 46, and the second gear 34, the third gear 46, and the locking gear 37 are all configured as double gears; In the first step, the worm 33 is sleeved on the rotating shaft of the locking motor 32 with an interference fit, and the worm 33 rotates with the rotating shaft of the locking motor 32; then the locking motor 32 is clamped in the upper cover 27; The second step is to fix the locking gear 37 on the mounting plate 35, and the gear set is fixed in the upper cover 27, so as to form a linkage assembly composed of the locking motor 32, the gear set, the locking gear 37 and the mounting plate 35; The third step is to slide the integrated rack 36 onto the slide rail 1, fix the lock tongue 41 at the end of the integrated rack 36, and mesh the integrated rack 36 with the locking gear 37, and then fix the upper cover 27 and the lower cover 31 with screws. The rotating shaft of the locking motor 32 drives the worm 33 to rotate, and the worm 33 drives the gear set to mesh with the locking gear 37, so as to drive the lock tongue 41 to extend and retract through the meshing of the locking gear 37 and the integrated rack 36. The lock tongue 41 is inserted into the limit hole of the display assembly 2 to achieve locking. At this time, the lock tongue travel sensor 42 is triggered, and the feedback signal to the MCU indicates that the lock tongue 41 is firmly locked. The MCU cuts off the power to the locking motor 32, thereby realizing the locking function to prevent the display screen from loosening on bumpy roads and injuring passengers. Figure 6 shown.

[0031] The motor drive PCBA uses YTM32B1LE05 as the main control chip, and uses keil to complete the function development. The input capture function of the timer is used to collect the rotation position and speed information of the motor 11 in real time, and the AD is used to collect the current of the motor 11. The software performs calculations based on the collected information, and the PWM function of the timer is used to control the motor 11. Human-computer interaction is achieved by periodically scanning whether there is a key pressed, and the corresponding function is realized according to the corresponding key. In addition, it can also be remotely operated through infrared remote control, such as Fig.13 shown.

[0032] The hardware circuit part of the flip screen motion mechanism system mainly includes MCU module, power supply module, motor module, button module 47, etc. The design is based on MCU. The power supply module provides suitable voltage for each module. The motor driver chip drives the 12V DC motor to work normally. This design uses a brushed DC motor. The input signal of the motor driver chip can realize PWM modulation to control the motor speed using the current chopping method. The control module consists of 5 independent buttons that can control the movement, stop, forward rotation, and reverse rotation of the motor, such as Fig.14 shown.

[0033] The embodiments of the present invention are only used to illustrate the present invention and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutes that can be thought of by those skilled in the art are all within the protection scope of the present invention.

Claims

1. A vehicle-mounted flip screen motion mechanism system, characterized in that: The invention comprises a flip screen housing (1), a display screen assembly (2), a gear transmission box (3), a motor drive PCBA (4), and a locking mechanism (5); the bottom of the flip screen housing (1) is provided with the display screen assembly (2); one side of the flip screen housing (1) is provided with a receiving groove (6); the left and right sides of the receiving groove (6) are both provided with gear transmission boxes (3); the gear transmission box (3) passes through the receiving groove (6) to fix the display screen assembly (2) so as to adjust the rotation of the display screen assembly (2); the upper part of the flip screen housing (1) is symmetrically provided with locking mechanisms (5); after the gear transmission box (3) rotates to retract the display screen assembly (2), the locking mechanisms (5) pass through the flip screen housing (1) and are locked to the two sides of the display screen assembly (2) so as to fix and limit the display screen assembly (2); the side of the flip screen housing (1) away from the receiving groove (6) is provided with a motor drive PCBA (4) so ​​as to control the driving operation of the gear transmission box (3) and the locking movement of the locking mechanism (5); The gear transmission box (3) comprises a transmission box housing (7), a motor (11), a lead screw output shaft (12), a rack nut seat (13), a shaft sleeve (14), a damping plate (15), a main rotating shaft (16), and a main gear (17). The transmission box housing (7) is mounted on the upper part of the flip screen housing (1) by screws. One side of the main rotating shaft (16) is provided as a fixed platform (21) for mounting the display screen assembly (2). The other side of the main rotating shaft (16) passes through the surface of the transmission box housing (7). , and is fixedly installed with the main rotating shaft (16) through the shaft sleeve (14), the main rotating shaft (16) is rotatably installed with the transmission box housing (7) through the shaft sleeve (14), the main rotating shaft (16) extends along its axial direction to the inside of the transmission box housing (7) and is rotatably installed with the transmission box housing (7) through the bearing seat (22), and an angle sensor (23) is provided between the end surface of the main rotating shaft (16) and the inside of the transmission box housing (7) to adjust the hovering of the display screen assembly (2) at any angle. A main gear (17) is assembled on the main rotating shaft (16) through a spline interference fit, a screw output shaft (12) is arranged in the vertical direction of the main rotating shaft (16), the screw output shaft (12) extends out of the transmission box housing (7) and is fixedly connected to a motor 1 (11), a rack nut seat (13) is slidably arranged on the screw output shaft (12), the upper part of the rack nut seat (13) is limited and slidably installed with the inner wall of the transmission box housing (7), the rack nut seat (13) is meshed and connected with the main gear (17), and the transmission box housing (7) A limiting groove (24) is provided at the connection with the shaft sleeve (14), a damping plate (15) is inserted and installed at the bottom of the limiting groove (24), a screw hole (25) is provided at the top of the limiting groove (24), and an adjusting screw (26) is installed in the inner thread of the screw hole (25), so that the adjusting screw (26) can be threadedly installed with the screw hole (25) and the damping plate (15) to adjust the contact of the damping plate (15) with the shaft sleeve (14), so that the damping plate (15) can perform friction damping on the shaft sleeve (14).

2. The vehicle-mounted flip screen motion mechanism system according to claim 1, characterized in that: The locking mechanism (5) comprises an upper cover (27), a lower cover (31), a locking motor (32), a worm (33), a second gear (34), a third gear (46), a mounting plate (35), and an integrated rack (36). The upper cover (27) and the lower cover (31) are mounted by screws. The lower cover (31) is fixedly connected to the flip screen housing (1). The upper cover (27) is provided with a locking motor (32), a second gear (34), and a third gear (46). The output end of the locking motor (32) is provided with a worm (33). The worm (33) and the second gear (34) are driven by a worm gear structure. The second gear (34) is meshed with the third gear (46). The upper cover (27) and the lower cover (31) are provided with a worm gear structure. The mounting plate (35) is connected to the upper cover (27) and the lower cover (31) by screws. The mounting plate (35) is symmetrically provided with a slide rail (36). An integrated rack (36) is slidably installed on the slide rail (36). A locking gear (37) is meshingly connected to the inside of the integrated rack (36). The locking gear (37) is fixedly connected to the mounting plate (35). The locking gear (37) is meshingly connected to a gear (46). A locking tongue (41) is provided at the end of the integrated rack (36) away from the locking motor (32). The locking tongue (41) extends out of the upper cover (27) and the lower cover (31). Lock tongue travel sensors (42) are respectively provided on both sides of the mounting plate (35) along the sliding movement direction of the integrated rack (36).

3. The vehicle-mounted flip screen motion mechanism system according to claim 2, characterized in that: The integrated rack (36) is arranged in a rectangular frame structure, and a rack is arranged inside the integrated rack and meshes with the locking gear (37).

4. The vehicle-mounted flip screen motion mechanism system according to claim 1, characterized in that: A slide groove (43) is provided on the inner wall surface of the transmission box housing (7) above the rack nut seat (13), and the rack nut seat (13) is slidably mounted on the slide groove (43).

5. The vehicle-mounted flip screen motion mechanism system according to claim 1, characterized in that: The main rotating shaft (16) is provided as a hollow shaft structure, so as to allow the display screen harness to pass through the hollow shaft structure.

6. The vehicle-mounted flip screen motion mechanism system according to claim 1, characterized in that: The contact portion between the damping sheet (15) and the shaft sleeve (14) is made of nylon or POM.

7. The vehicle-mounted flip screen motion mechanism system according to claim 1, characterized in that: The angle sensor (23) comprises an induction magnet (44) and a magnetoelectric induction encoding chip (45). The induction magnet (44) is fixed to the shaft end of the main rotating shaft (16) inside the gear transmission box (3) through a magnet clamp and rotates with the main rotating shaft (16). The magnetoelectric induction encoding chip (45) is fixed inside the gear transmission box (3) directly facing the induction magnet (44). The induction magnet (44) and the magnetoelectric induction encoding chip (45) convert the rotation angle of the main rotating shaft (16) into an electrical signal through magnetoelectric induction and feed it back to the control circuit, so as to electrically adjust and control the display screen assembly (2) to open, retract and lock, and to hover the display screen assembly (2) at any angle.

Images