Vehicle-mounted ceiling screen overturning and locking mechanism

Abstract

The utility model discloses a vehicle-mounted ceiling screen overturning and locking mechanism in the technical field of automobile display screens, which comprises a ceiling screen shell, a display screen assembly, a locking mechanism, a left reduction gear box, a right reduction gear box, a mounting plate and a screw I. The vehicle-mounted ceiling screen overturning and locking mechanism is characterized in that the left reduction gear box comprises an upper shell and a lower shell; a first duplicate gear, a second duplicate gear, a third duplicate gear, a fourth duplicate gear and a gear shaft are arranged in the upper shell, a worm is arranged at the bottom of the first duplicate gear, one end of the worm is connected with a driving motor, a main rotating shaft gear is arranged on the left side of the fourth duplicate gear, a bearing sleeve is arranged at the rear end of a main rotating shaft, and a gear shaft is arranged in the bearing sleeve. According to the overturning and locking system for the vehicle-mounted ceiling screen, a display screen assembly of the vehicle-mounted ceiling screen can be overturned and opened to any angle to be suspended and retracted.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive display screens, and specifically relates to a flip and locking mechanism for an in-vehicle ceiling screen. Background Technique

[0002] With the increasing material needs of the people, more and more consumers choose to buy vehicles equipped with in-vehicle ceiling screens, and many car owners even choose to install in-vehicle ceiling screens by themselves. However, many in-vehicle ceiling screens on the market cannot meet the safety and usage requirements of the vehicle under complex working conditions: flipping and opening to hover at any angle, resisting vehicle vibration and shock, preventing screen jitter when opened, retracting and locking, manual resetting after power failure, long service life, and low noise.

[0003] To solve the above problems, the present invention provides a flip and locking system for an in-vehicle ceiling screen, which can meet the requirements of the above complex working conditions of the in-vehicle ceiling, thereby ensuring the safety of the in-vehicle ceiling screen. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flip and locking mechanism for an in-vehicle ceiling screen to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A flip and locking mechanism for an in-vehicle ceiling screen, including a ceiling screen housing, a display screen assembly, a locking mechanism, a left reduction gearbox, a right reduction gearbox, a first mounting plate, and a first screw, characterized in that: the left reduction gearbox includes an upper housing and a lower housing, the upper housing is provided with a double gear one, a double gear two, a double gear three, a double gear four, and a gear shaft, a worm is arranged at the bottom of the double gear one, one end of the worm is connected to a driving motor, a main rotating shaft gear is arranged on the left side of the double gear four, a bearing sleeve is arranged at the rear end of the main rotating shaft, a damping piece is arranged at the top of the bearing sleeve, an idler gear is arranged at the front end of the main rotating shaft gear, a pressing screw is arranged on the upper housing, and a main rotating shaft is arranged on the first mounting plate.

[0006] Preferably, the left reduction gearbox includes an upper cover and a lower cover, a second mounting plate and a locking tongue are arranged between the upper cover and the lower cover, a gear set is arranged on the second mounting plate, a locking motor is arranged on the left side of the gear set, and a second screw is arranged on the lower cover.

[0007] Preferably, a cardiac induction coding chip and an induction magnet are arranged inside the right reduction gearbox.

[0008] Preferably, the ceiling screen housing is fixed on the car roof through a mounting bracket, a buckle, and a hinge.

[0009] Preferably, one end of the main rotating shaft is fixed to the main rotating shaft gear, and the other end is fixed to the display screen assembly by screws.

[0010] Preferably, the bearing sleeve is fixed on the main rotating shaft, the damping piece is fixed on the upper housing, and the damping piece and the bearing sleeve are pressed together by a compression screw.

[0011] Preferably, the rotating shaft of the driving motor is fixedly connected to the worm. By adjusting the number of teeth and the diameter coefficient of the worm, the lead angle of the worm is made greater than the equivalent friction angle to ensure that the worm cannot self-lock.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The flip and locking system of the in-vehicle ceiling-mounted screen of the present utility model can flip and open the display screen assembly of the in-vehicle ceiling-mounted screen to any angle for hovering and retracting.

[0014] 2. By adjusting the motor driving time and the parameters of the reduction gearbox, the flip angle and speed of the display screen assembly of the in-vehicle ceiling-mounted screen can be adjusted.

[0015] 3. After the display screen assembly of the in-vehicle ceiling-mounted screen is opened, it is anti-vibration and resistant to vehicle vibration and shock.

[0016] 4. It has a locking function, and the display screen assembly can be manually reset.

[0017] 5. The flip system has a long service life and low noise.

[0018] 6. It is applicable to various vehicle models and has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is an exploded view of the left reduction gearbox of the present utility model;

[0021] Figure 3 is a schematic diagram of the internal structure of the left reduction gearbox of the present utility model;

[0022] Figure 4 is a schematic diagram of the installation structure of the mounting plate and the left reduction gearbox of the present utility model;

[0023] Figure 5 is a sectional view of the main rotating shaft of the structure of the present utility model;

[0024] Figure 6 is a schematic diagram of the installation structure of the magnetoelectric induction coding chip and the induction magnet of the present utility model;

[0025] Figure 7 is an exploded view of the locking mechanism of the present utility model;

[0026] Figure 8 This is the installation sectional view of the locking mechanism of the present utility model.

[0027] In the figure: 1. Ceiling-mounted screen housing; 2. Display assembly; 3. Locking mechanism; 31. Upper cover; 32. Lower cover; 33. Screw II; 34. Second mounting plate; 35. Lock tongue; 36. Locking motor; 37. Gear set; 4. Left reduction gearbox; 5. Right reduction gearbox; 6. First mounting plate; 7. Upper housing; 8. Lower housing; 9. Worm; 10. Driving motor; 11. Double gear I; 12. Double gear IV; 13. Main rotating shaft gear; 14. Bearing sleeve; 15. Damping piece; 16. Compression screw; 17. Main rotating shaft; 18. Idler gear; 19. Double gear III; 20. Double gear II; 21. Gear shaft; 22. Inductive magnet; 23. Magneto-electric induction coding chip. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1-8, the present utility model provides a technical solution: a vehicle-mounted ceiling screen flipping and locking mechanism, including a ceiling screen housing 1, a display assembly 2, a locking mechanism 3, a left reduction gearbox 4, a right reduction gearbox 5, a first mounting plate 6 and a first screw 24. The left reduction gearbox 3 includes an upper housing 7 and a lower housing 8. Inside the upper housing 7, there are a double gear one 11, a double gear two 20, a double gear three 19, a double gear four 12 and a gear shaft 21. At the bottom of the double gear one 11, there is a worm 9. One end of the worm 9 is connected to a driving motor 10. On the left side of the double gear four 12, there is a main rotating shaft gear 13. At the rear end of the main rotating shaft 13, there is a bearing sleeve 14. On the top of the bearing sleeve 14, there is a damping piece 15. At the front end of the main rotating shaft gear 13, there is an idle gear 18. On the upper housing 7, there is a compression screw 16. On the right reduction gearbox 5, there is a main rotating shaft 17. The driving motor 10 is fixed to the outside of the left reduction gearbox 4 and the right reduction gearbox 5 by screws. The main rotating shaft 17 is assembled with the reduction gearbox 4. The assembly assembly formed by the driving device 3, the left reduction gearbox 4 and the right reduction gearbox 5 with the main rotating shaft 17 is fixed to the ceiling screen housing 1 by the first screw 8 to fix the first mounting plate 6. The display assembly 2 is assembled with the main rotating shaft 17 by screws to form a whole and rotates together with the main rotating shaft 17. The locking motor 46, the gear set 47 and the locking tongue 45 are encapsulated in a housing to form a locking system. The locking mechanism is fixed to the ceiling screen housing 1 by the first screw 8;

[0030] The left reduction gearbox 4 is mainly divided into an upper housing 7, a lower housing 8, a gear shaft 21 (a total of 5), a worm 9, double gears (a total of 4), an idle gear 18, a main rotating shaft gear 13, a bearing sleeve 14, a damping piece 15, a compression screw 16 and a first screw 24. The worm 9 is sleeved on the rotating shaft of the driving motor 10. The driving motor 10 is inserted into the housing from the opening at the bottom of the upper housing 7 and fixed with screws from the inside. The gear shaft 21 is assembled with the idle gear 18 and the double gears by interference fit to form an assembly of gears and shafts. The assembly of gears and the assembly shaft is inserted into the corresponding bearing seats inside the upper housing 7. The main rotating shaft 17 is inserted into the mounting hole at the front of the upper housing 7, and then the bearing sleeve 14 and the main rotating shaft gear 13 are assembled onto the main rotating shaft 17. The damping piece 15 is inserted into the corresponding slot of the upper housing 7 and coaxial with the bearing sleeve. Then the compression screw 16 is assembled into the corresponding mounting hole of the upper housing 7 to press the damping piece 15 and the bearing sleeve 14. The lower housing 8 and the upper housing 7 are assembled together by the first screw 24 to form an assembly of the driving motor, the reduction gearbox and the main rotating shaft. This assembly is fixed to the BOSS column of the ceiling screen housing 1 by screws;

[0031] The rotating shaft of the drive motor 10 drives the worm 9 to rotate, driving the first double gear, the second double gear, the third double gear, the fourth double gear, the idle gear 18 and the main rotating shaft gear 13 to rotate. Since the main rotating shaft gear 13 is fixedly connected to the main rotating shaft 17, the main rotating shaft 17 is also driven to rotate with the main rotating gear 13. The drive motor 10 drives the main rotating shaft 17 to rotate through the left reduction gearbox. Generally, the selected speed of the drive motor is (2000 - 3000) r / min. Therefore, the transmission ratio of the left reduction gearbox is usually designed to be 800 - 1200, reducing the high speed to a low speed of about 2.5 r / min. The transmission ratio of the left reduction gearbox and the motor drive time can be adjusted according to the specific flipping and opening angle and time of the customer. Mainly, the parameters of the gears, worm, and turbine, including the number of teeth, module, etc., are adjusted, so as to realize the adjustment of the flipping and opening angle and speed of the in-vehicle ceiling screen display assembly;

[0032] The compression screw 16 compresses the damping piece 15 and the bearing sleeve 14 to generate frictional force, thereby providing a rotational damping force for the main rotating shaft 17. The contact part between the damping piece 15 and the bearing sleeve 14 can be made of materials such as nylon and POM, and the surface roughness is adjusted according to the magnitude of the damping force. At the same time, the compression force between the damping piece 15 and the bearing sleeve 14 can also be adjusted through the compression screw 16 to assist in adjusting the magnitude of the damping force;

[0033] The drive motor 10 is selected as a brushless inner rotor motor, with a single - product noise of about 37 db. The outside of the motor is coated with a rubber sleeve for vibration isolation to avoid rigid contact with the gearbox housing and reduce the overall noise. When the structure is operating under load, the motor runs at the highest speed, which is the best noise - using range of the motor. The transmission mechanism inside the reduction gearbox uses worm reduction, providing a large reduction ratio, which can help the transmission gears reduce noise more effectively, thus controlling the operating noise below 40 db;

[0034] An operating cycle of the in - vehicle ceiling screen is about 7 s (calculated according to an opening angle of 105° and a main rotating shaft speed of 2.5 r / min (i.e., 15° / s)). The motor life is about 2000 h. Therefore, the number of times the in - vehicle ceiling screen flips and opens is 2000 * 60 * 60 / 7 = 1028571, approximately 1 million times. So, the in - vehicle ceiling screen flipping system of the present invention has a long service life;

[0035] Except for the angle sensor and the upper housing, the right reduction gearbox 5 is completely symmetrical to the left gearbox. The angle sensor includes an induction magnet 22 and a magnetoelectric induction coding chip 23. The induction magnet 22 is fixed to the shaft end of the main rotating shaft 17 through a magnet clamp and rotates with the main rotating shaft 17. The magnetoelectric induction coding chip 23 is fixed on the upper housing of the right reduction gearbox opposite to the induction magnet 22. Through magnetoelectric induction, the rotation angle of the main rotating shaft 17 is converted into an electrical signal and fed back to the control circuit, which is used for electrically adjusting and controlling the opening, retracting, and locking of the display screen assembly, and realizing hovering at any angle. The flipping angle adjustment accuracy of the magnetoelectric induction coding chip 23 can reach ±0.5°.

[0036] Reference embodiment: The locking mechanism 3 includes an upper cover 31 and a lower cover 32. A second mounting plate 34 and a locking tongue 35 are arranged between the upper cover 31 and the lower cover 32. A gear set 37 is arranged on the mounting plate 34. A locking motor 36 is arranged on the left side of the gear set 37. A second screw 33 is arranged on the lower cover 32. A second worm 38 is arranged on the said motor 36. The locking mechanism 3 is composed of an upper cover 31, a lower cover 33, a locking motor 36, a worm, a gear set 37 (3 double gears), a second mounting plate 34, and a locking tongue 35 (integrated rack). First step, sleeved the second worm 38 on the rotating shaft of the locking motor with interference fit and rotate with the rotating shaft of the locking motor 36, and then snap the locking motor 36 onto the mounting plate 34; Second step, fix the gear set 37 on the second mounting plate 34 to form an assembly of the locking motor, the gear set, and the mounting plate; Third step, fix the locking tongue 35 on the lower cover, snap the mounting plate assembly in the second step onto the lower cover, and then fix the upper cover 31 and the lower cover 32 with the second screw 33. The rotating shaft of the locking motor 36 drives the worm 38 to rotate. The worm 38 is linked with the gear set 37 and the rack mechanism of the locking tongue 35 to drive the locking tongue to extend and retract. The locking tongue 35 is inserted into the limiting hole arranged on the display screen assembly 2, namely, the locking is realized. And after the display screen assembly 2 is rotated and retracted through the driving shaft 17, the angle sensor feeds back a signal to the control circuit, and the locking motor 36 starts to work. Through the gear set 37 and the rack, the locking tongue is ejected and inserted into the limiting hole arranged on the display screen assembly 2 to realize the locking function and prevent the display screen from loosening and injuring passengers on bumpy roads.

[0037] Reference embodiment: A magnetoelectric induction coding chip 23 and an induction magnet 22 are arranged in the right reduction gearbox 5. The induction magnet 22 is fixed to the shaft end of the main rotating shaft 17 through a magnet clamp and rotates with the main rotating shaft 17. The magnetoelectric induction coding chip 23 is fixed inside the reduction gearbox opposite to the induction magnet. Through magnetoelectric induction, the rotation angle of the main rotating shaft is converted into an electrical signal and fed back to the control circuit, which is used for electrically adjusting and controlling the opening, retracting, and locking of the display screen assembly, and realizing hovering at any angle. The flipping angle adjustment accuracy of the magnetoelectric induction coding chip can reach ±0.5°;

[0038] Reference embodiment: The ceiling screen housing 1 is fixed on the car roof through mounting brackets, buckles and hinges.

[0039] Reference embodiment: The driving motor drives the main rotating shaft 17 to rotate through the left reduction gear box 4 and the right reduction gear box 5. One end of the main rotating shaft 17 is fixed to the main rotating shaft gear 13, and the other end is fixed to the display screen assembly 2 by screws. The high speed of the driving motor is reduced to a low speed, and the torque of the driving motor is amplified. The display screen assembly 2 rotates together with the main rotating shaft 17, thereby realizing the flipping, opening and folding of the display screen assembly 2.

[0040] Reference embodiment: The bearing sleeve 14 is fixed on the main rotating shaft 17, and the damping plate 15 is fixed on the upper shell 7. The damping plate 15 and the bearing sleeve 14 are pressed together by the clamping screw 16 to generate friction, thereby providing rotation damping of the main rotating shaft 17. The general design damping is 3-5NM, which is determined according to the mass of the display assembly and the impact force it receives, to ensure that the display assembly can remain stable and not rotate under external force and vibration after being flipped open. The damping plate 15 and the bearing sleeve 14 are made of POM or nylon or other materials.

[0041] Reference embodiment: the rotating shaft of the driving motor 10 is fixedly connected with the worm 9, the number of teeth and the diameter coefficient of the worm 9 are adjusted to make the lead angle of the worm 9 larger than the equivalent friction angle, to ensure that the worm 9 cannot self-lock, and the damping force (about 4NM) and the transmission ratio of the gear set are reasonably adjusted. Manual reset is supported, and the display screen assembly can be manually moved with 70N to reset the display screen. This function is not a common function and is only for protection.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted ceiling screen flipping and locking mechanism, comprising a ceiling screen housing (1), a display assembly (2), a locking mechanism (3), a left reduction gearbox (4), a right reduction gearbox (5), a first mounting plate (6), and a first screw (24), characterized in that: The left reduction gearbox (4) includes an upper housing (7) and a lower housing (8). Inside the upper housing (7), there are a double gear one (11), a double gear two (20), a double gear three (19), a double gear four (12), and a gear shaft (21). At the bottom of the double gear one (11), there is a worm (9). One end of the worm (9) is connected to a drive motor (10). On the left side of the double gear four (12), there is a main rotation shaft gear (13). At the rear end of the main rotation shaft gear (13), there is a bearing sleeve (14). At the top of the bearing sleeve (14), there is a damping plate (15). At the front end of the main rotation shaft gear (13), there is an idle gear (18). On the upper housing (7), there is a compression screw (16). On the first mounting plate (6), there is a main rotation shaft (17).

2. The in-vehicle ceiling screen flipping and locking mechanism according to claim 1, characterized in that: The locking mechanism (3) includes an upper cover (31) and a lower cover (32). Between the upper cover (31) and the lower cover (32), there are a second mounting plate (34) and a locking tongue (35). On the second mounting plate (34), there is a gear set (37). On the left side of the gear set (37), there is a locking motor (36). On the lower cover (32), there is a screw two (33).

3. The flip and locking mechanism of an in-vehicle ceiling screen according to claim 1, characterized in that: Inside the right reduction gearbox (5), there are a magnetoelectric induction coding chip (23) and an induction magnet (22).

4. A flip and locking mechanism for an in-vehicle ceiling screen according to claim 1, characterized in that: The ceiling screen housing (1) is fixed to the car roof through a mounting bracket, a buckle, and a hinge.

5. A flip and locking mechanism for an in-vehicle ceiling screen according to claim 1, characterized in that: One end of the main rotation shaft (17) is fixed to the main rotation shaft gear (13), and the other end is fixed to the display assembly (2) through screws.

6. The flip and locking mechanism of an in-vehicle ceiling screen according to claim 1, characterized in that: The bearing sleeve (14) is fixed on the main rotation shaft (17), and the damping plate (15) is fixed on the upper housing (7). The damping plate (15) is pressed against the bearing sleeve (14) through the compression screw (16).

7. The in-vehicle ceiling screen flipping and locking mechanism according to claim 1, characterized in that: The rotating shaft of the drive motor (10) is fixedly connected to the worm (9). By adjusting the number of teeth and the diameter coefficient of the worm (9), the lead angle of the worm (9) is made greater than the equivalent friction angle to ensure that the worm (9) cannot self-lock.

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