A vehicle-mounted ceiling display device

Abstract

The application discloses a kind of vehicle-mounted ceiling display devices, comprising: bottom plate, display screen, two drive components and connecting rod, two described drive components are spaced apart on the bottom plate along horizontal direction, and the drive end of two described drive components is respectively connected with the two sides of the display screen, the two ends of the connecting rod are connected with the bottom plate and the display screen respectively, and at least one end of the connecting rod is movably connected;Each described drive component includes motor, screw rod and sliding member, the motor is installed on the bottom plate, the power end of the motor is drivingly connected with the screw rod, the sliding member is slidably sleeved on the outer periphery of the screw rod, and the sliding member is movably connected with the display screen.The application significantly improves the use experience and safety performance of ceiling electric display screen.

Description

Technical Field

[0001] This application relates to the technical field of display devices, and more particularly to a vehicle-mounted ceiling-mounted display device. Background Technology

[0002] With the increasing demand for intelligent vehicles and improved driving comfort, in-vehicle ceiling displays, as important entertainment and information interaction components, are facing increasingly higher requirements for ease of adjustment, operational stability, and user experience. In particular, the multi-angle rotation adjustment function of the display needs to balance adjustment accuracy and equipment reliability.

[0003] However, current driving solutions for in-vehicle ceiling displays still have significant technical shortcomings. Most mainstream solutions use a single motor drive. Due to limitations in the driving method and motor performance, the motion transmission path of such solutions is too long, amplifying vibration and friction noise during power transmission. Moreover, the single-motor drive method also suffers from poor synchronization and limited load-bearing capacity, making it impossible to precisely control the rotation of the display screen and adapt to large-size and heavy displays, thus limiting the product's specification expansion. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle-mounted ceiling-mounted display device that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution: On the one hand, a vehicle-mounted ceiling-mounted display device is provided, comprising: a base plate, a display screen, two drive components and a connecting rod, wherein the two drive components are horizontally spaced on the base plate and the drive ends of the two drive components are movably connected to both sides of the display screen, and the two ends of the connecting rod are respectively connected to the base plate and the display screen, and at least one end of the connecting rod is movably connected; The drive assembly includes a motor, a lead screw, and a slider. The motor is mounted on the base plate, and its power end is connected to the lead screw. The slider is slidably sleeved on the outer circumference of the lead screw and is movably connected to the display screen. By using a dual-drive assembly, the synchronization issues and stuttering problems of a single drive are avoided, improving the load-bearing capacity for large screens. Direct transmission effectively reduces noise, and the movable connecting rod simplifies the structure, reduces complexity, and improves adjustment stability and service life.

[0006] Furthermore, a control module is also installed on the base plate, and the drive assembly includes a circuit board. The control module is electrically connected to both the motor and the circuit board, and the circuit board is used to calculate the number of revolutions of the motor. By accurately calculating the number of motor revolutions through the circuit board, and coordinating the control module with the two motors, synchronous operation of the two motors is ensured, further improving the accuracy and stability of the display screen adjustment.

[0007] Furthermore, the system also includes a detection component mounted on the base plate, which is used to detect the status of the display screen. This detection component allows for real-time monitoring of the display screen's usage status, preventing damage during operation.

[0008] Furthermore, the display screen has an on-screen state and an off-screen state. The detection component includes a first detector and a second detector. When the first detector is triggered, the display screen is in the on-screen state; when the second detector is triggered, the display screen is in the off-screen state. By accurately identifying the on-screen and off-screen states of the display screen, a clear determination of the operating status of the display device is achieved, which can effectively avoid abnormal operation caused by misjudgment of the status and improve the reliability and safety of device operation.

[0009] Furthermore, the first detector includes a protrusion on one side of the slider and a first detection switch mounted on the base plate. When the slider slides along the lead screw to the screen switching to the open state, the protrusion contacts the first detection switch. This contact design between the protrusion and the first detection switch can accurately trigger detection when the screen reaches the open state. Through mechanical linkage, it ensures accurate screen opening positioning, avoids overshoot or incomplete positioning, and improves adjustment reliability.

[0010] Furthermore, the second detector includes a second detection switch disposed on the base plate. When the display screen switches to the screen-off state, the back side of the display screen touches the second detection switch. The second detection switch on the base plate cooperates with the touch on the back side of the display screen to accurately trigger when the screen is fully closed. Direct contact ensures reliable determination of the screen-off state, prevents improper storage or over-driving, and ensures device safety.

[0011] Furthermore, two connecting rods are provided, and the two connecting rods are arranged at an interval on the back side of the display screen. The two connecting rods are arranged at an interval on the back side of the display screen, which can not only evenly distribute the force to avoid unilateral deformation, but also save horizontal space and improve structural stability and adaptability to vehicle space.

[0012] Furthermore, a fixed bracket is installed on the base plate, and the fixed bracket is rotatably connected to one end of the connecting rod, while the other end of the connecting rod is rotatably connected to the display screen. This rotatable connection design between the fixed bracket and both ends of the connecting rod ensures precise and stable installation of the connecting rod through the bracket, while also providing sufficient freedom of movement through the double movable connection, ensuring flexible and smooth rotation of the display screen.

[0013] Furthermore, the drive assembly includes a fixed base and a support base, which are spaced apart on the base plate along the length of the lead screw. The motor is mounted on the fixed base, and the end of the lead screw facing away from the motor is mounted on the support base. The fixed base and support base are spaced apart along the lead screw, providing stable support at both ends for the motor and the lead screw, preventing deformation of the cantilevered lead screw under stress, and improving transmission accuracy and the durability of the drive assembly.

[0014] Furthermore, the sliding component includes a slider and a backlash-free nut integrally formed on the slider. The backlash-free nut is threadedly connected to the lead screw and is also rotatably connected to the display screen. The base plate is provided with a guide rail that slides with the slider. The integral forming of the slider and the backlash-free nut, along with their cooperation with the guide rail on the base plate, eliminates thread backlash and limits the sliding trajectory. Combined with the rotatable connection to the display screen, this improves transmission accuracy and motion smoothness, and reduces jamming and noise.

[0015] The beneficial effects of this application are as follows: First, the dual independent motors synchronously drive the lead screws on both sides. When the display screen moves upward and flips open, the displacement on both sides can be perfectly matched by precisely controlling the motor parameters. This avoids the problems of offset and jamming during opening caused by inconsistent transmission of the existing single motor, ensuring that the trajectory of the display screen flipping open relative to the base plate is smooth, and the positioning accuracy and adjustment stability are greatly improved. Secondly, the direct drive between the motor and the lead screw results in a shorter power transmission path during the synchronous drive of the display screen to move upward and the connecting rod to rotate. This reduces vibration transmission and friction loss, thereby reducing operating noise during the opening process from the source, avoiding the impact of noise on the comfort of the driving environment, and improving the user experience. In addition, the dual drive components bear the load on both sides of the display screen respectively. When the screen is moved upward and flipped open synchronously, the load is evenly distributed. Compared with the existing single-point load structure of a single motor, the overall load-bearing capacity is significantly improved. It can be adapted to larger and heavier displays, ensuring the stability of the large screen opening process and breaking through the limitations of existing solutions on display screen specifications. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a front view of the internal structure of the vehicle-mounted ceiling display device described in the embodiment of this application (screen off state). Figure 2 This is a side view of the internal structure of the vehicle-mounted ceiling display device described in the embodiment of this application (screen off state). Figure 3 This is a front view of the internal structure of the vehicle-mounted ceiling display device described in the embodiment of this application (screen open state). Figure 4This is a front view of the internal structure of the vehicle-mounted ceiling display device described in the embodiment of this application (screen open state). Figure 5 This is a front view (screen off state) of the vehicle-mounted ceiling display device described in the embodiments of this application. Figure 6 This is a front view (screen-on state) of the vehicle-mounted ceiling display device described in the embodiments of this application. Figure 7 This is a schematic diagram of the slider described in an embodiment of this application.

[0018] In the diagram: 1. Base plate; 2. Display screen; 3. Drive assembly; 301. Motor; 302. Lead screw; 303. Sliding component; 304. Circuit board; 305. Fixing base; 306. Support base; 307. Guide rail; 4. Connecting rod; 5. Control module; 6. First detection switch; 7. Protrusion; 8. Second detection switch; 9. Fixing bracket; 10. Panel. Detailed Implementation

[0019] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] As the automotive industry moves towards greater intelligence, users' pursuit of in-car entertainment and information interaction experiences continues to upgrade. As an important in-vehicle device, the adjustability, stability, and user experience of in-vehicle ceiling displays are receiving increasing attention. In particular, the multi-angle flexible rotation adjustment function of the display screen places stringent requirements on accuracy and device durability.

[0023] Currently, the driving technology for in-vehicle ceiling-mounted displays still faces many unresolved issues. Common driving solutions on the market mostly rely on single-motor drives or traditional DC motor drives. These solutions suffer from three major technical bottlenecks: First, limited by the driving principle and motor performance, high-precision control of the display positioning is difficult, resulting in inaccurate screen placement. Second, significant noise is generated during operation, mainly due to the long power transmission path under single-motor drive, which intensifies vibration and mechanical friction during movement, severely disrupting the quiet driving environment inside the vehicle. Finally, the existing driving structure lacks sufficient load capacity to support the operation requirements of large-size, heavy displays, greatly hindering the development of products towards larger specifications.

[0024] Furthermore, existing solutions for multi-angle rotation adjustment of the display screen suffer from high structural complexity and insufficient reliability, making them prone to adjustment failures due to structural wear or transmission deviations. This is particularly true for single-motor drive solutions, which require synchronously driving two lead screws to achieve adjustment. Ensuring the consistency of rotation between the two lead screws places extremely high demands on the symmetry, matching degree, and machining accuracy of the transmission structure. The dimensions, assembly clearances, and other parameters of the transmission structure must be completely consistent; otherwise, asynchronous rotation of the two lead screws can easily occur. This not only significantly increases the design complexity and manufacturing cost of the transmission structure but also raises the difficulty of production and assembly, resulting in extremely low tolerance for errors in the machining accuracy of parts. Even with strict control of machining and assembly accuracy, it is still difficult to completely avoid the risk of transmission inconsistency, leading to display screen adjustment stuttering, misalignment, or even structural jamming and damage, severely impacting equipment performance and user experience.

[0025] like Figures 1-7As shown, this embodiment provides a vehicle-mounted ceiling-mounted display device, including: a base plate 1, a display screen 2, two drive components 3, and a connecting rod 4. The two drive components 3 are horizontally spaced on the base plate 1, and the drive ends of the two drive components 3 are movably connected to both sides of the display screen 2. The two ends of the connecting rod 4 are connected to the base plate 1 and the display screen 2, and at least one end of the connecting rod 4 is movably connected. Each drive component 3 includes a motor 301, a lead screw 302, and a sliding member 303. The motor 301 is mounted on the base plate 1, and the power end of the motor 301 is connected to the lead screw 302. The sliding member 303 is slidably sleeved on the outer periphery of the lead screw 302, and the sliding member 303 is movably connected to the display screen 2.

[0026] Based on the above scheme, this vehicle-mounted ceiling-mounted display device uses a core structure of dual drive components 3 working together and movable connecting rods 4 to achieve smooth opening of the display screen 2. The two drive components 3 are horizontally spaced and mounted on the base plate 1, each forming a movable connection with both sides of the display screen 2. Each drive component 3 includes a motor 301, a lead screw 302, and a sliding member 303. The motor 301 can directly drive the lead screw 302 to rotate and move the sliding member 303 along the axial direction of the lead screw 302. When the display screen 2 is opened, the speed and direction of the two motors 301 are synchronously adjusted to ensure smooth opening of the display screen 2. The side sliding component 303 moves upward synchronously and directly pulls the two sides of the display screen 2 to lift synchronously. Compared with the traditional design of a single motor 301 driving a double lead screw 302, it effectively avoids the offset and jamming problems caused by poor transmission synchronization, and significantly optimizes the positioning accuracy and adjustment stability of the display screen 2 during the opening process. At the same time, the two ends of the connecting rod 4 are respectively connected to the base plate 1 and the display screen 2, and at least one end adopts a hinge or other movable connection form. When the dual drive component 3 drives the display screen 2 to move upward, the display screen 2 will pull the connecting rod 4 to rotate around its movable connection point, so that the display screen 2 can be smoothly flipped from the initial storage state.

[0027] Furthermore, the dual drive assembly 3 can bear the load on both sides of the display screen 2 respectively, which greatly improves the overall load-bearing capacity compared to single-point load bearing. It can adapt to larger and heavier display screens 2, breaking through the limitations of traditional solutions on the specifications of the display screen 2, ensuring the stability of opening large-size screens. Moreover, the direct drive design of motor 301 and lead screw 302 shortens the power transmission path and reduces the noise amplification caused by vibration and friction in long-path transmission, reducing operating noise from the source to optimize the comfort of the driving environment. At the same time, the device relies on the synchronous drive of dual motors 301 to cooperate with the rotation of connecting rod 4 to realize the upward movement and flip opening of display screen 2. It eliminates the need for the high-precision transmission matching structure and additional flip drive assembly 3 required by the single motor 301 driving dual lead screws 302 in the traditional solution. The dual drive assembly 3 has a symmetrical and independent structure and a higher tolerance for the error rate of parts machining accuracy, which greatly simplifies the overall structural design, reduces production and manufacturing costs and assembly difficulty. It can also avoid the structural jamming and wear problems caused by the inconsistent transmission of the traditional single motor 301. The independent operation of dual drive assembly 3 and the even distribution of load make the structural wear smaller. The flipping action relies on simple rod transmission, which also reduces the failure risk caused by complex structure, significantly improving the reliability and service life of the equipment.

[0028] Furthermore, for the dual-motor 301 drive mode, it is necessary to ensure the synchronization of the two motors 301 to ensure the precise and stable rotation of the display screen 2. Therefore, a control module 5 is also installed on the base plate 1, and the drive assembly 3 also includes a circuit board 304. The control module 5 is electrically connected to the motor 301 and the circuit board 304 respectively, and the circuit board 304 is used to calculate the number of revolutions of the motor 301. In this scheme, firstly, the control module 5 installed on the base plate 1 serves as the core control unit, forming electrical connections with the motors 301 and circuit boards 304 of the two drive assemblies 3 respectively, realizing data interaction and command transmission; secondly, the circuit board 304 of each drive assembly 3 undertakes the function of monitoring and calculating operating parameters, which can capture the rotation state of the motor 301 in real time and accurately calculate the number of revolutions of the motor 301. Since the number of revolutions of motor 301 and the number of revolutions of lead screw 302 have a fixed transmission ratio, and the number of revolutions of lead screw 302 directly corresponds to the axial displacement of slider 303, circuit board 304 can convert the number of revolutions of motor 301 into the displacement data of slider 303 and feed it back to control module 5 in real time. Finally, after receiving the displacement data transmitted by circuit boards 304 on both sides, control module 5 compares and analyzes the actual operating status of the two motors 301. If a deviation in displacement is found on both sides, such as one side motor 301 running too many revolutions, resulting in a large upward movement of slider 303, or one side running too few revolutions, resulting in a small upward movement, control module 5 will immediately send an adjustment command to the motor 301 on the side with the deviation, such as adjusting the speed of motor 301 or correcting the rotation direction, to ensure that the number of revolutions of motors 301 on both sides is always consistent, thereby achieving synchronous displacement of slider 303 and ultimately ensuring the accurate and stable flipping of display screen 2.

[0029] In some embodiments, a detection component is also included, which is mounted on the base plate 1 and is used to detect the state of the display screen 2. The detection component can be configured as a position sensor (such as a Hall sensor, photoelectric sensor), angle sensor, or displacement sensor, etc., according to actual needs. During the entire process of the display screen 2 moving upwards and flipping open using the dual drive components 3, it continuously detects key state parameters of the display screen 2, including but not limited to the real-time position of the display screen 2, the flip angle, and whether there is any lag or deviation in operation. The detection component transmits the collected state data to the control module 5 of the device in real time. The control module 5, combined with the number of revolutions of the motor 301 calculated by the circuit board 304, dynamically adjusts the speed and direction of the dual motors 301: if the position of the display screen 2 does not reach the preset value or the angle deviates, the control module 5 can accurately correct the operating parameters of the motor 301; if lag or abnormal displacement is detected, the control module 5 can promptly control the motor 301 to decelerate or stop, avoiding structural damage.

[0030] Furthermore, the display screen 2 has an open state and a closed state. The detection component includes a first detector and a second detector. When the first detector is triggered, the display screen 2 is in the open state; when the second detector is triggered, the display screen 2 is in the closed state. When the display screen 2 performs an opening action driven by the dual-drive component 3, as the display screen 2 rotates around the connecting rod 4 and gradually detaches from the retracted state until it reaches the preset fully open posture, the edge or preset trigger part of the display screen 2 will contact the first detector on the base plate 1. At this time, the first detector is triggered and sends an open state signal to the control module 5. When the display screen 2 performs a closing action, the dual-drive component 3 drives the display screen 2 to rotate in the opposite direction and gradually retract until it returns to the initial fully closed posture. The corresponding trigger part of the display screen 2 will then contact the second detector on the base plate 1. After the second detector is triggered, it sends a closed state signal to the control module 5. After receiving the two types of signals, the control module 5 can accurately identify the current state of the display screen 2 and adjust the operation of the motor 301 of the dual-drive component 3 accordingly to ensure the stability and smoothness of the operation process.

[0031] It is worth mentioning that when the display screen 2 is in the off state, the display screen 2 and the base plate 1 are parallel, that is, the angle between the two is 0°; while when the display screen 2 is in the on state, the maximum angle between the display screen 2 and the base plate 1 is 108°. This maximum angle represents the limit of the display screen 2's opening angle. In practical applications, the display screen 2 can be selectively opened between 0-108°, that is, at any angle between 0-108°, such as 50°, 90°, etc., which can be designed and selected according to actual usage needs.

[0032] The first detector includes a protrusion 7 on one side of the slider 303 and a first detection switch 6 mounted on the base plate 1. When the slider 303 slides along the lead screw 302 to switch the display screen 2 to the open state, the protrusion 7 touches the first detection switch 6. The first detector achieves accurate detection of the open state of the display screen 2 through mechanical triggering and position matching. Firstly, the protrusion 7 is integrated into one side of the slider 303 of the drive assembly 3, and its installation position is precisely calibrated to perfectly match the displacement of the display screen 2 when the slider 303 drives it to the open state. Secondly, the first detection switch 6 is fixed at the corresponding position on the base plate 1, forming a motion triggering correspondence with the protrusion 7. When the display screen 2 is in the off state, the slider 303 is located at the initial end of the lead screw 302, and the protrusion 7 is spaced apart from the first detection switch 6. After the screen opening action is initiated, the motor 301 drives the lead screw 302 to rotate, causing the slider 303 to move upward along the axis of the lead screw 302. The slider 303 simultaneously pulls the two sides of the display screen 2 up and flips. As the slider 303 continues to move, when the displacement of the slider 303 reaches the preset screen opening displacement threshold, that is, when the display screen 2 is fully unfolded to the open state, the protrusion 7 on the slider 303 will move synchronously to the first detection switch 6, triggering the first detection switch 6 by physical contact. After the first detection switch 6 is triggered, it will immediately send an electrical signal to the control module 5 of the device. After receiving the signal, the control module 5 accurately controls the motor 301 to stop running, so that the slider 303 maintains its current position, thereby locking the open state of the display screen 2.

[0033] Additionally, the second detector includes a second detection switch 8 mounted on the base plate 1. When the display screen 2 switches to the off state, the back side of the display screen 2 touches the second detection switch 8. When the vehicle-mounted ceiling display device needs to switch from the on state to the off state, the control module 5 drives the motor 301 of the dual drive assembly 3 to rotate synchronously in the opposite direction, causing the sliding parts 303 on both sides to move axially downward along the lead screw 302, thereby pulling the display screen 2 to rotate in the opposite direction around the movable connection point of the connecting rod 4, and gradually falling back towards the base plate 1. Since the second detection switch 8 is fixedly installed on the base plate 1, and its installation position precisely corresponds to the back side position of the display screen 2 in the off state, as the display screen 2 rotates and falls back, its back side will gradually approach the second detection switch 8 on the base plate 1; when the display screen 2 is completely rotated to the off state, the back side of the display screen 2 will directly physically contact the second detection switch 8, triggering the second detection switch 8 to generate an electrical signal. The electrical signal is transmitted to the control module 5 of the device in real time. After receiving the signal, the control module 5 determines that the display screen 2 has been turned off and then sends a command to stop the operation of the dual motors 301, thus completing the closed-loop control of the screen turning-off action and status detection.

[0034] Preferably, two connecting rods 4 are provided, and the two connecting rods 4 are arranged at intervals on the back side of the display screen 2. Through the two-point support on the back side, combined with the traction force of the dual drive components 3 on both sides of the display screen 2, the stability of the display screen 2 during the flipping process is maintained. Compared with the single-point support of a single connecting rod 4, the two spaced connecting rods 4 can evenly distribute the weight load of the display screen 2 to the two support points on the back side, allowing the weight of the display screen 2 to be synchronously transferred to the base plate 1 through two points. This effectively avoids deformation of the connecting rod 4 and local pressure damage on the back side of the display screen 2 caused by concentrated force at a single point during long-term use. Especially in vehicle vibration environments, the dual support points can reduce the swaying amplitude of the display screen 2 during flipping and reduce the stress on the drive components 3 caused by excessive force on one side. The risk of failure caused by load is significantly improved, enhancing the stability and structural durability of the display screen 2 during the flipping process. At the same time, the connecting rod 4 is located on the back side of the display screen 2 rather than on the horizontal sides, which maximizes the horizontal installation space of the device. There is no need to reserve the installation position of the connecting rod 4 in the horizontal direction of the base plate 1, allowing the dual drive components 3 to be arranged more compactly along both sides of the base plate 1. This also avoids the connecting rod 4 occupying the horizontal movement space of the passenger's head in the vehicle, adapting to the limited installation area on the roof of different vehicle models, making the overall structure of the device more streamlined, reducing the risk of installation interference with other components in the vehicle, and improving the space utilization and assembly flexibility in the vehicle scenario.

[0035] Meanwhile, a fixed bracket 9 is installed on the base plate 1. The fixed bracket 9 is rotatably connected to one end of the connecting rod 4, and the other end of the connecting rod 4 is rotatably connected to the display screen 2. The fixed bracket 9 serves as a key installation reference for the connecting rod 4, forming a stable assembly with the base plate 1. Its core function is to provide a precise and fixed rotational connection point for one end of the connecting rod 4. At the same time, the other end of the connecting rod 4 also adopts a rotatable connection design with the display screen 2, forming a double movable connection transmission link.

[0036] Specifically, the stable assembly of the fixed bracket 9 and the base plate 1 can accurately lock the installation position of the connecting rod 4, avoiding the problem of easy displacement of the end point of the connecting rod 4 in the traditional design without the fixed bracket 9. This ensures the consistency of the movement trajectory of the connecting rods 4 on both sides, thereby ensuring the synchronicity of the dual drive component 3 when driving the display screen 2 to flip. It effectively prevents the display screen 2 from tilting or jamming due to the displacement of the connecting rod 4 on one side, improving adjustment accuracy and operational stability. Secondly, the dual movable connection method breaks through the degree of freedom limitation of the single movable connection, allowing the connecting rod 4 to flexibly adjust its angle according to the movement requirements of the display screen 2. This reduces the movement interference between the connecting rod 4 and the display screen 2 and the fixed bracket 9, reduces structural wear, and makes the flipping action of the display screen 2 smoother, avoiding the movement jerks caused by excessive connection constraints, thus optimizing the user's operating experience.

[0037] In addition, a more preferred solution is to set a fixed bracket 9 between the display screen 2 and the connecting rod 4 to realize the movable connection between the display screen 2 and the connecting rod 4, while effectively protecting the display screen 2 from damage caused by excessive stress.

[0038] Specifically, the movable connection can be a hinge-type connection, a ball joint connection, a pin-type connection, or a hinge-type connection. In the pin-type connection, a lug with a shaft hole is provided on the fixed bracket 9 / display screen 2, and a matching bushing is provided at the end of the connecting rod 4. A metal pin passes through the shaft hole of the lug and the bushing, and both ends of the pin are fixed by cotter pins or elastic retaining rings. A small gap can be reserved between the bushing and the pin. During the flipping process of the display screen 2, the connecting rod 4 rotates around the pin axis. The lug and the bushing form a stable rotating pair through the pin. Due to the high precision of the fit between the pin and the shaft hole, the wobbling of the connecting rod 4 can be precisely limited, ensuring the stability of the flipping trajectory of the display screen 2, especially suitable for synchronous operation when two connecting rods 4 are arranged at intervals.

[0039] Alternatively, the hinged connection consists of two hinge pieces with shaft holes, a metal pivot, and anti-loosening washers. The pivot passes through the shaft holes of the two hinge pieces, forming a connection structure that can rotate around the axis, with a rotation angle typically covering 0°-180°. When the dual drive assembly 3 drives the two sides of the display screen 2 to move upward synchronously, the connecting rod 4 rotates around the hinge pivot. Through the relative rotation of the hinge pieces, the display screen 2 can be smoothly flipped. At the same time, the hinge structure can restrict lateral displacement, retaining only rotational freedom.

[0040] In some embodiments, the drive assembly 3 includes a fixed base 305 and a support base 306. The fixed base 305 and the support base 306 are spaced apart on the base plate 1 along the length direction of the lead screw 302. The motor 301 is mounted on the fixed base 305, and the end of the lead screw 302 facing away from the motor 301 is mounted on the support base 306. The core function of the fixed base 305 and the support base 306 is to provide bidirectional stable support for the lead screw 302 and the motor 301, ensuring the accuracy of power transmission and the movement of the sliding member 303. Specifically, the fixed base 305 and the support base 306 are fixed at intervals on the base plate 1 along the length direction of the lead screw 302, forming a two-end support structure along the axial direction of the lead screw 302. The fixed base 305 serves as the mounting carrier for the motor 301, securing it firmly in place with bolts and other fasteners. This ensures the coaxial alignment of the motor 301's power end with the lead screw 302's connection point, preventing transmission deviations caused by motor 301 misalignment. The support base 306 is installed at the end of the lead screw 302 away from the motor 301, engaging with the end of the lead screw 302 via bearings or bushings. This provides radial and axial limiting support for the lead screw 302, preventing cantilever bending or swaying during high-speed rotation or under load. In this structure, the motor 301 is fixed at its power end via the fixed base 305, and the lead screw 302 is constrained at both ends by the fixed base 305 and the support base 306. This ensures the lead screw 302 maintains a preset straightness and coaxiality during rotation, thereby driving the sliding member 303 to move smoothly along the axial direction of the lead screw 302, preventing jamming or displacement deviation of the sliding member 303 due to lead screw 302 misalignment.

[0041] It is worth noting that the sliding member 303 includes a slider and a backlash-free nut integrally formed on the slider. The backlash-free nut is threadedly connected to the lead screw 302 and is also rotatably connected to the display screen 2. The base plate 1 is provided with a guide rail 307 that slides and engages with the slider. The sliding member 303 is integrally formed from the slider and the backlash-free nut, and the backlash-free nut is threadedly engaged with the lead screw 302 of the drive assembly 3. When the motor 301 drives the lead screw 302 to rotate, the threaded transmission converts the rotational motion of the lead screw 302 into the linear motion of the backlash-free nut. Because the backlash-free nut has the structural characteristic of eliminating threaded fit clearance, such as a preset small interference fit or elastic compensation design, it can effectively offset the radial clearance between the lead screw 302 and the nut, avoiding wobbling caused by clearance during movement; at the same time, the backlash-free nut and the slider are integrally formed, which can synchronously transmit the linear motion to the slider, ensuring that the power transmission is without delay or loosening.

[0042] The guide rail 307 on the base plate 1 forms a sliding fit with the slider. When the slider moves in a straight line along the extension direction of the guide rail 307 under the drive of the backlash-free nut, the guide rail 307 will form a rigid constraint on the movement trajectory of the slider to prevent the slider from shifting left and right or moving up and down due to the radial force of the lead screw 302 or vehicle vibration, and ensure that the slider 303 always moves smoothly along the preset path.

[0043] Meanwhile, one end of the backlash-free nut is rotatably connected to the display screen 2, such as through a pin, bearing, or other structure. When the sliding member 303 moves linearly along the guide rail 307, the backlash-free nut can adapt to the angle change of the display screen 2 during the flipping process through the rotatable connection. This can stably transmit linear traction force to lift or lower the display screen 2, while also preventing additional torque on the sliding member 303 due to the angle deviation of the display screen 2, thus preventing structural jamming.

[0044] Generally, a panel 10 is also provided on the base plate 1. The panel 10 has a through hole for the installation of the display screen 2. The panel 10 mainly serves to cover and shield the internal structure. Therefore, plastic material can be used to effectively hide the internal structure while ensuring the appearance of the device.

[0045] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0048] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A vehicle-mounted ceiling-mounted display device, characterized in that, include: The base plate (1), the display screen (2), two drive components (3) and the connecting rod (4) are arranged horizontally on the base plate (1), and the drive ends of the two drive components (3) are movably connected to the two sides of the display screen (2). The two ends of the connecting rod (4) are connected to the base plate (1) and the display screen (2) respectively, and at least one end of the connecting rod (4) is movably connected. The drive assembly (3) includes a motor (301), a lead screw (302), and a slider (303). The motor (301) is mounted on the base plate (1). The power end of the motor (301) is connected to the lead screw (302) for transmission. The slider (303) is slidably sleeved on the outer periphery of the lead screw (302) and is movably connected to the display screen (2).

2. The vehicle-mounted ceiling-mounted display device according to claim 1, characterized in that, The base plate (1) is also equipped with a control module (5), and the drive assembly (3) also includes a circuit board (304). The control module (5) is electrically connected to the motor (301) and the circuit board (304) respectively. The circuit board (304) is used to calculate the number of revolutions of the motor (301).

3. The vehicle-mounted ceiling-mounted display device according to claim 1, characterized in that, It also includes a detection component, which is mounted on the base plate (1) and is used to detect the state of the display screen (2).

4. The vehicle-mounted ceiling-mounted display device according to claim 3, characterized in that, The display screen (2) has an on screen state and an off screen state. The detection component includes a first detector and a second detector. When the first detector is triggered, the display screen (2) is in the on screen state. When the second detector is triggered, the display screen (2) is in the off state.

5. The vehicle-mounted ceiling-mounted display device according to claim 4, characterized in that, The first detector includes a protrusion (7) on one side of the slider (303) and a first detection switch (6) mounted on the base plate (1). When the slider (303) slides along the lead screw (302) to the display screen (2) and switches to the open screen state, the protrusion (7) touches the first detection switch (6).

6. The vehicle-mounted ceiling-mounted display device according to claim 4, characterized in that, The second detector includes a second detection switch (8) disposed on the base plate (1). When the display screen (2) is switched to the off state, the back side of the display screen (2) touches the second detection switch (8).

7. The vehicle-mounted ceiling-mounted display device according to any one of claims 1-6, characterized in that, There are two connecting rods (4), and the two connecting rods (4) are arranged at an interval on the back side of the display screen (2).

8. The vehicle-mounted ceiling-mounted display device according to any one of claims 1-6, characterized in that, A fixed bracket (9) is installed on the base plate (1). The fixed bracket (9) is rotatably connected to one end of the connecting rod (4), and the other end of the connecting rod (4) is rotatably connected to the display screen (2).

9. The vehicle-mounted ceiling-mounted display device according to any one of claims 1-6, characterized in that, The drive assembly (3) includes a fixed base (305) and a support base (306). The fixed base (305) and the support base (306) are installed on the base plate (1) at intervals along the length direction of the lead screw (302). The motor (301) is installed on the fixed base (305), and the end of the lead screw (302) away from the motor (301) is installed on the support base (306).

10. The vehicle-mounted ceiling-mounted display device according to any one of claims 1-6, characterized in that, The sliding component (303) includes a slider and a backlash-free nut integrally formed on the slider. The backlash-free nut is threadedly connected to the lead screw (302) and is also rotatably connected to the display screen (2). The base plate (1) is provided with a guide rail (307) that slides with the slider.

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