A two-way deployment mechanism for a vehicle roof-mounted display screen

Abstract

The application relates to the technical field of vehicle-mounted display devices, in particular to a bidirectional unfolding mechanism for a vehicle-mounted overhead display screen, which comprises a base, a transition frame connected with the base through a first rotating shaft and a display screen module connected with the transition frame through a second rotating shaft arranged in parallel with the first rotating shaft. The mechanism can selectively lock the transition frame and drive the display screen module to independently unfold, or lock the display screen module and drive the transition frame to integrally unfold, so that the bidirectional unfolding function is realized. The application preferably adopts a symmetrical double-drive and multi-point locking design, and the structure is stable and reliable. The application greatly enriches the application scenarios of the vehicle-mounted display screen and can provide more flexible and comfortable cabin entertainment experience for users in different sitting postures.

Description

Technical Field

[0001] This application relates to the field of vehicle-mounted display equipment technology, and in particular to a bidirectional unfolding mechanism for a vehicle-mounted overhead display screen. Background Technology

[0002] With the increasing demand for intelligent vehicles and in-cabin entertainment, roof-mounted displays have become a common feature in passenger cars. Currently, the roof-mounted display mechanisms used in existing mass-produced models are typically one-way flipping mechanical structures. That is, the display screen flips down from its storage position on the roof, with the screen facing the rear of the vehicle, so that passengers in the second row and subsequent seats can view it from their normal sitting position while facing the front of the vehicle.

[0003] However, this traditional one-way layout is relatively limited in function and cannot meet the diverse needs of various cabin application scenarios. For example, when users fold down the second row and rear seats to create a "double bed" for reclining, their viewing direction changes to facing the rear of the vehicle. In this scenario, the existing rear-facing displays cannot be viewed properly, as their position and angle are unsuitable for the new requirements. This significantly limits the functional expandability of the cabin space and reduces the overall entertainment experience for users.

[0004] Based on the above, this application proposes a bidirectional unfolding mechanism for a vehicle-mounted roof display screen, which can effectively solve the above problems. Utility Model Content

[0005] This application provides a bidirectional unfolding mechanism for a vehicle-mounted roof display screen, which solves the technical problem that existing roof display screens can only unfold in one direction and cannot adapt to diverse cockpit application scenarios.

[0006] A bidirectional unfolding mechanism for a vehicle-mounted overhead display screen includes:

[0007] A base, including the main frame;

[0008] A transition frame, including a fixed frame, the fixed frame being pivotally connected to the base via a first rotation axis; and

[0009] A display module is housed in the fixed frame, the display module being pivotally connected to the transition frame via a second rotation axis, the first rotation axis and the second rotation axis being parallel to each other; and a drive assembly and a locking assembly.

[0010] The drive component and the locking component are configured to operate in two selectable deployment modes:

[0011] First unfolding mode: The locking component locks the relative position of the transition frame and the base, while the driving component drives the display module to rotate and unfold around the second rotation axis; and

[0012] Second unfolding mode: The locking component locks the relative position of the display module and the transition frame, while the driving component drives the transition frame to rotate and unfold around the first rotation axis.

[0013] In one embodiment, the driving assembly includes a first driving unit and a second driving unit. The first driving unit is configured to drive the display module to rotate about the second rotation axis, while the second driving unit is configured to drive the transition frame to rotate about the first rotation axis. By equipping the two rotation axes with independent drive sources, automated and precise control of the two deployment modes is achieved.

[0014] In one embodiment, there are two of each of the first and second drive units, which are symmetrically arranged on both sides of the mechanism, effectively improving the stability of the first and second drive units and the rigidity of the structure.

[0015] In one embodiment, two first drive units are symmetrically arranged in the cavities on both sides of the short side of the transition frame, and two second drive units are symmetrically arranged on both sides of the main frame.

[0016] In one embodiment, the first drive unit includes a power transmission assembly configured to transmit power after a 90-degree reversal.

[0017] Specifically, the power transmission assembly includes a driving bevel gear and a driven bevel gear. The driving bevel gear is located at one end of the power transmission assembly, and the driven bevel gear is located at one end of the second rotating shaft. The driving and driven bevel gears are set at 90 degrees and mesh with each other to achieve power reversal transmission. This design arranges the axis of the first drive unit perpendicular to the second rotating shaft, thereby significantly optimizing the spatial layout of the mechanism in the thickness direction and making the overall structure more compact.

[0018] In one embodiment, the locking assembly includes a first locking unit and a second locking unit. The first locking unit is configured to selectively lock the display module, i.e., lock its relative position to the transition frame; the second locking unit is configured to selectively lock the transition frame, i.e., lock the relative position of the transition frame to the base.

[0019] Specifically, during vehicle operation, the two locking units can lock simultaneously, transforming the entire mechanism into a stable and rigid whole. This effectively eliminates the risk of abnormal noises, shaking, or accidental sagging caused by bumps and vibrations, ensuring driving safety.

[0020] In one embodiment, both the first locking unit and the second locking unit are provided with a retractable push rod. The display module has a through hole that mates with the retractable push rod of the first locking unit, and the transition frame has a groove that mates with the retractable push rod of the second locking unit. The retractable push rod is configured to extend into or out of the through hole and groove to achieve locking and unlocking. By precisely controlling the positions of the through hole and groove, it can be ensured that the display module and the transition frame are accurately positioned when retracted or extended to a predetermined angle, guaranteeing the repeatability accuracy of the mechanism's movements.

[0021] In one embodiment, the mechanism further includes a control system, which typically includes a main controller and at least one sensor electrically connected to the main controller. The sensor can detect the rotation angle or locking state of the mechanism and is electrically connected to the drive assembly and locking assembly to provide real-time feedback to the control system to achieve closed-loop control. The main controller is responsible for receiving user instructions and issuing control signals according to a preset program to coordinate the movement of the entire mechanism.

[0022] In one embodiment, the control system is configured to execute the following coordinated control logic: upon receiving a first instruction, controlling the second locking unit to remain locked while simultaneously controlling the first driving unit to drive the display module to rotate; and upon receiving a second instruction, controlling the first locking unit to remain locked while simultaneously controlling the second driving unit to drive the transition frame to rotate.

[0023] The bidirectional unfolding mechanism for a vehicle-mounted roof display screen provided in this application can achieve the following technical effects:

[0024] 1. By hierarchically arranging the base, transition frame, and display module in a parallel dual-axis structure, and integrating two independent drive units and locking units, and then coordinating them under a unified control system, the display can be deployed in both forward and backward modes within a single mechanism. This solves the problem of the single function of the top-mounted display in the prior art, and improves the functional diversity of the top-mounted display and its adaptability to different application scenarios in the cockpit.

[0025] 2. By setting a first locking unit and a second locking unit on the base and display module respectively, and in conjunction with the "full lock when folded" control logic in the control system, the mechanism is ensured to be a stable and rigid whole in the folded storage state, which fundamentally eliminates the risk of abnormal noise, shaking or accidental sagging caused by bumps and vibrations during vehicle operation, thus ensuring driving safety.

[0026] 3. By integrating the main controller and sensors for feedback of position and status, a complete closed-loop control system is formed. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a bidirectional unfolding mechanism for a vehicle-mounted roof display screen provided in an embodiment of this application.

[0028] Figure 2 This is an exploded view of a bidirectional unfolding mechanism for a vehicle-mounted roof display screen provided in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the structure of a display module (with the display removed) in a bidirectional unfolding mechanism for a vehicle-mounted roof display screen provided in an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the transition frame in a bidirectional unfolding mechanism for a vehicle-mounted roof display screen, provided in an embodiment of this application.

[0031] Figure 5 yes Figure 4 An enlarged schematic diagram of part A in the middle.

[0032] Figure 6 This is a schematic diagram of the base in a bidirectional unfolding mechanism for a vehicle-mounted roof display screen, provided in an embodiment of this application.

[0033] Figure 7 yes Figure 6 Enlarged diagram of part B.

[0034] Figure 8 This is a schematic diagram of a bidirectional unfolding mechanism for a vehicle-mounted roof display screen, provided in an embodiment of this application, unfolding towards the rear of the vehicle in a first mode.

[0035] Figure 9 This is a schematic diagram of a bidirectional unfolding mechanism for a vehicle-mounted roof display screen, provided in an embodiment of this application, unfolding towards the front of the vehicle in a second mode.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Base; 11. Main frame; 111. Mounting interface;

[0038] 2. Transition frame; 21. First rotation axis; 22. Fixing frame; 23. Groove;

[0039] 3. Display module; 31. Second rotating axis; 32. Display screen; 33. Module bracket; 331. Through hole;

[0040] 4. Drive assembly; 41. First drive unit; 411. Power transmission assembly; 4111. Driving bevel gear; 4112. Driven bevel gear; 412. Drive element; 42. Second drive unit;

[0041] 5. Locking assembly; 51. First locking unit; 52. Second locking unit; 53. Telescopic push rod;

[0042] 6. Control system; 61. Main controller; 62. Sensor; 621. Angle sensor; 622. Position sensor. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-9 This application provides a further detailed description of a bidirectional unfolding mechanism for a vehicle-mounted roof display screen.

[0044] This application discloses a bidirectional unfolding mechanism for a vehicle-mounted roof display screen, which mainly includes a base 1, a transition frame 2, a display screen module 3, a driving component 4, and a locking component 5.

[0045] The drive component 4 and the locking component 5 are configured to operate in two selectable deployment modes:

[0046] First unfolding mode: The locking component 5 locks the relative position of the transition frame 2 and the base 1, while the driving component 4 drives the display module 3 to rotate and unfold around the second rotation axis 31; and

[0047] Second unfolding mode: The locking component 5 locks the relative position of the display module 3 and the transition frame 2, while the driving component 4 drives the transition frame 2 to rotate and unfold around the first rotation axis 21.

[0048] In this embodiment, the base 1 is the fixed foundation of the entire mechanism, including a main frame 11. The main frame 11 is rigidly connected to the vehicle roof and other stabilizing components through a preset installation interface 111, thereby fixing the entire mechanism to the vehicle body.

[0049] In this embodiment, the transition frame 2 serves as an intermediate functional component connecting the base 1 and the display module 3. It includes a fixed frame 22, and one end of the transition frame 2 is pivotally connected to the base 1 via a first rotation axis 21, so that the transition frame 2 can rotate relative to the base 1 around the first rotation axis 21.

[0050] In this embodiment, the display module 3 is the part directly facing the user and is disposed within the fixed frame 22. The display module 3 includes a display screen 32 and a module bracket 33. The display screen 32 is disposed inside the module bracket 33 and can be a high-definition LCD screen or an organic light-emitting diode screen. The display module 3 is pivotally connected to the transition frame 2 via a second rotation axis 31 arranged along its long side, allowing the display module 3 to rotate relative to the transition frame 2 about the second rotation axis 31. Specifically, the first rotation axis 21 and the second rotation axis 31 are set to be parallel to each other, which ensures that the two flipping actions of the mechanism are performed in parallel planes.

[0051] In this embodiment, the driving assembly 4 includes a first driving unit 41 and a second driving unit 42. The first driving unit 41 is configured to drive the display module 3 to rotate around the second rotation axis 31. Preferably, there are two first driving units 41, symmetrically arranged in the cavities on both sides of the short side of the transition frame 2 to provide a balanced driving torque. The second driving unit 42 is configured to drive the transition frame 2 to rotate around the first rotation axis 21. Similarly, there are also preferably two second driving units 42, symmetrically arranged on both sides of the main frame 11. This symmetrical dual-drive layout can provide a balanced driving torque for the two rotation axes, fundamentally avoiding the torsional deformation problem that may be caused by unilateral drive.

[0052] Specifically, to optimize space, the first drive unit 41 may include a drive element 412 and a power transmission assembly 411. The drive element 412 may be a micro servo motor to achieve smooth speed regulation and precise angle control. In this embodiment, the power transmission assembly 411 is preferably a set of bevel gears. In this set of bevel gears, the driving bevel gear 4111 is connected to the drive element 412, and the driven bevel gear 4112 is sleeved on one end of the second rotating shaft 31. The motor can drive the driving bevel gear 4111 to rotate, thereby driving the driven bevel gear 4112 to rotate. Since the second rotating shaft 31 is perpendicular to the short side of the transition frame 2, the bevel gear set can reverse the power of the drive element 412 by 90 degrees and then transmit it to the second rotating shaft 31, thereby driving the display module 3 to flip. This design allows the axis of the drive element 412 to be arranged perpendicular to the second rotating shaft 31, so that the drive element 412 can be installed laterally, saving space in the thickness direction of the mechanism and allowing the mechanism to be easily accommodated in the limited space of the car roof. The same technical solution can also be applied to the second drive unit 42.

[0053] Specifically, in other embodiments, when a self-locking function is required to prevent reverse drive by external force, the power transmission component 411 can also be selected as a worm gear mechanism.

[0054] In this embodiment, the mechanism further includes a locking assembly 5, which is divided into a first locking unit 51 and a second locking unit 52. The first locking unit 51 is configured to selectively lock the display module 3, that is, to rigidly fix the display module 3 to the transition frame 2 when needed; the second locking unit 52 is configured to selectively lock the transition frame 2, that is, to rigidly fix the transition frame 2 to the base 1 when needed. To ensure absolute stability of the lock and prevent any slight displacement when the vehicle is bumpy, the number of second locking units 52 is preferably two, symmetrically installed on both sides of the long side of the main frame 11.

[0055] In this embodiment, the first locking unit 51 and the second locking unit 52 are locked and unlocked by a built-in retractable push rod 53. To achieve precise mechanical fit, through holes 331 are provided on the side of the module bracket 33 opposite to the first rotating shaft 21 and on the side of the transition frame 2 near the second rotating shaft 31, which fit the retractable push rod 53 inside the first locking unit 51. The through holes 331 serve as guide channels for the retractable push rod 53 of the first locking unit 51. A groove 23 is provided on the outer side wall of the transition frame 2 away from the second rotating shaft 31 in the short side direction to fit the retractable push rod 53 inside the second locking unit 52.

[0056] In this embodiment, the mechanism also includes a control system 6, which typically includes a main controller 61 and at least one sensor 62 electrically connected to the main controller 61. The sensor 62 is configured to detect the rotation angle or locking state of the mechanism. The main controller 61 is typically a high-performance microcontroller, mounted on the module bracket 33, and electrically connected to the drive assembly 4 and the locking assembly 5 via cables. It is responsible for receiving user commands and issuing control signals according to a preset program.

[0057] Specifically, sensor 62 can be an angle sensor 621 for accurately measuring rotation angle, or a position sensor 622 for determining locked or unlocked state. Angle sensor 621 can be mounted on two rotating shafts, and position sensor 622 can be mounted on the end of telescopic push rod 53. When sensor 62 is mounted on the first rotating shaft 21 and the second rotating shaft 31, it is configured as angle sensor 621 to obtain accurate angular position in real time. When sensor 62 is mounted on the end of telescopic push rod 53 of the first locking unit 51 and the second locking unit 52, it is configured as position sensor 622. When telescopic push rod 53 contacts or moves away from the contacted surface, position sensor 622 sends a "locked" or "unlocked" signal to main controller 61.

[0058] The working principle of the bidirectional unfolding mechanism for a vehicle-mounted roof display provided in this application is as follows:

[0059] When not in use, the mechanism is in a folded storage state. At this time, the main controller 61 controls the retractable push rods 53 inside the first locking unit 51 and the second locking unit 52 to extend and fix into the through hole 331 and the groove 23 respectively, so that the first locking unit 51 and the second locking unit 52 are both locked, and the entire mechanism is locked into a rigid whole, ensuring that the mechanism remains stable and does not fall when the vehicle is in motion.

[0060] Upon receiving the first mode command, the main controller 61 first sends an "unlock" command to the first locking unit 51 while maintaining the locked state of the second locking unit 52. After confirming through the sensor 62 that the first locking unit 51 has been fully unlocked, the main controller 61 then activates the first drive unit 41 to drive the display module 3 to rotate and unfold around the second rotation axis 31.

[0061] Upon receiving the second mode command, the main controller 61 first sends an "unlock" command to the second locking unit 52 while maintaining the locked state of the first locking unit 51. Only after confirming that the second locking unit 52 has been fully unlocked does the main controller 61 activate the second drive unit 42, driving the transition frame 2 and the display module 3 locked thereto to rotate and unfold around the first rotation axis 21.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bidirectional unfolding mechanism for a vehicle-mounted roof-mounted display screen, characterized in that, include: A base (1) including a main frame (11); A transition frame (2) includes a fixed frame (22) which is pivotally connected to the base (1) via a first rotation axis (21); as well as A display module (3) is housed in the fixed frame (22), the display module (3) being pivotally connected to the transition frame (2) via a second rotation axis (31), the first rotation axis (21) and the second rotation axis (31) being parallel to each other; and a drive assembly (4) and a locking assembly (5); The drive component (4) and the locking component (5) are configured to operate in two selectable deployment modes: First unfolding mode: The locking component (5) locks the relative position of the transition frame (2) and the base (1), while the driving component (4) drives the display module (3) to rotate and unfold around the second rotation axis (31); as well as Second unfolding mode: The locking component (5) locks the relative position of the display module (3) and the transition frame (2), while the driving component (4) drives the transition frame (2) to rotate and unfold around the first rotation axis (21).

2. The bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 1, characterized in that, The driving assembly (4) includes a first driving unit (41) and a second driving unit (42). The first driving unit (41) is configured to drive the display module (3) to rotate about the second rotation axis (31), and the second driving unit (42) is configured to drive the transition frame (2) to rotate about the first rotation axis (21).

3. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 2, characterized in that, The number of the first drive unit (41) and the second drive unit (42) are both two, and they are symmetrically arranged on both sides of the mechanism.

4. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 3, characterized in that, Two first drive units (41) are symmetrically arranged in the inner cavity on both sides of the short side of the transition frame (2), and two second drive units (42) are symmetrically arranged on both sides of the main frame (11).

5. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 2, characterized in that, The first drive unit (41) includes a power transmission assembly (411) configured to transmit power to the second rotating shaft (31) after a 90-degree reversal.

6. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 5, characterized in that, The power transmission assembly (411) includes a driving bevel gear (4111) and a driven bevel gear (4112). The driving bevel gear (4111) is disposed at one end of the power transmission assembly (411), and the driven bevel gear (4112) is disposed at one end of the second rotating shaft. The driving bevel gear (4111) and the driven bevel gear (4112) are arranged at 90 degrees and mesh with each other to realize the power reversal transmission.

7. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 2, characterized in that, The locking assembly (5) includes a first locking unit (51) and a second locking unit (52), wherein the first locking unit (51) is configured to selectively lock the display module (3) and the second locking unit (52) is configured to selectively lock the transition frame (2).

8. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 7, characterized in that, Both the first locking unit (51) and the second locking unit (52) are provided with a retractable push rod (53). The display module (3) is provided with a through hole (331) that cooperates with the retractable push rod (53) of the first locking unit (51). The transition frame (2) is provided with a groove (23) that cooperates with the retractable push rod (53) of the second locking unit (52). The retractable push rod (53) is configured to extend into or out of the through hole (331) and the groove (23) to achieve locking and unlocking.

9. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 7, characterized in that, It also includes a control system (6), which includes a main controller (61) and at least one sensor (62) electrically connected to the main controller (61). The sensor (62) is configured to detect the rotation angle or locking state of the mechanism. The main controller (61) is electrically connected to the first drive unit (41), the second drive unit (42), the first locking unit (51), and the second locking unit (52). The main controller (61) is responsible for receiving user instructions and issuing control signals according to a preset program.

10. A bidirectional unfolding mechanism for a vehicle-mounted roof display screen according to claim 9, characterized in that, The control system (6) is configured as follows: Upon receiving the first instruction, the second locking unit (52) is controlled to remain locked, while the first driving unit (41) is controlled to drive the display module (3) to rotate and unfold around the second rotating axis (31); as well as Upon receiving the second instruction, the first locking unit (51) is controlled to remain locked, while the second driving unit (42) is controlled to drive the transition frame (2) to rotate and unfold around the first rotation axis (21).

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