Hanging type display screen mounting structure

Abstract

The invention relates to the technical field of rail transit vehicles, in particular to a hanging type display screen installation structure which comprises an installation support fixedly connected to a top framework, a display screen housing used for containing a display screen, a rotating mechanism composed of a fixed shaft, a rotating shaft and a connecting arm, an air spring, a safety hook and a limiting plunger. The display screen housing can rotate from a high-position working position to a low-position maintenance position in a vertical plane through the rotating mechanism; the gas spring is connected between the mounting bracket and the connecting arm and provides damping force in the whole rotating process; the display screen is prevented from accidentally and rapidly falling off when the safety hook rotates; the limiting plunger abuts against the connecting arm or the display screen housing so as to limit the rotation limiting position. According to the structure, position transfer is achieved through the rotating mechanism so as to eliminate the high-altitude operation risk, stable and labor-saving operation is achieved through the air spring, dual safety protection is formed through the safety hook and the limiting plunger, and the modular universality is high.

Description

Technical Field

[0001] This invention relates to the technical field of rail transit vehicles, and more particularly to a hanging display screen mounting structure. Background Technology

[0002] With the rapid development of the rail transit industry, in-car display screens, as an important component of passenger information systems, have been widely used inside train passenger compartments. Display screens are not only terminal devices for information output but also an integral part of the vehicle's interior. Therefore, their installation structure needs to consider multiple requirements, including aesthetics, durability, sturdiness, reliability, safety, and maintainability, ultimately aiming to ensure safe train operation, enhance passenger experience, and reduce total lifecycle costs.

[0003] Currently, the installation methods for displays inside train carriages are mainly divided into two types: wall-mounted and ceiling-mounted. Wall-mounted displays are typically installed at the ends or above the side walls of the carriage. The installation method involves drilling precise mounting holes in the interior panel, inserting the display frame into the holes from the front of the panel, and then securing the frame firmly from the back of the panel with screws. The drawbacks of this installation method are: limited operating space during disassembly and maintenance; to ensure a flat and aesthetically pleasing front, the fixing clips or screws are usually located on the side or back, requiring special tools and making operation inconvenient; for cases where disassembly from the front is not possible, maintenance personnel must enter behind the interior panel to work. Because the space behind the panel is narrow, dark, and filled with various cables and other equipment, maintenance personnel have difficulty operating, resulting in low work efficiency and a high risk of damaging the interior panel.

[0004] Suspended displays are typically installed below the ceiling of the passenger compartment, in the central area. The installation method involves fixing the display screen to the ceiling structure or roof frame using brackets, with the screen casing connected to the brackets via clips, screws, or sliding rails. The drawbacks of this installation method are: the display screen is installed at a height, requiring ladders or lifting platforms for maintenance; the display screen itself is heavy, and removing it from the clips or brackets at a height requires at least two people, which is not only time-consuming and labor-intensive but also poses a safety hazard of the display screen falling and personnel falling. Summary of the Invention

[0005] The purpose of this invention is to provide a suspended display screen installation structure that addresses the shortcomings of existing technologies, eliminating the safety risks of working at heights. By using a gas spring that provides damping force throughout the rotation, the lowering speed of the display screen is stable and controllable, significantly reducing operational difficulty and physical exertion. A dual safety protection system, consisting of an automatically engaging safety hook and a precisely positioned limiting plunger, ensures the display screen is reliably locked and its movement is accurate during maintenance, preventing accidental rebound or overload damage. Furthermore, its main components form a universal installation module, allowing for adaptation to display screens of various weights simply by replacing different specifications of gas springs, effectively reducing the adaptation costs for developing multiple vehicle models.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a hanging display screen installation structure, including a mounting bracket, a display screen cover, a rotating mechanism, a gas spring, a safety hook, and a limiting plunger; The mounting bracket is fixedly connected to the top frame of the carriage; The display screen housing is used to accommodate and secure the display screen; The rotating mechanism includes a fixed shaft fixedly mounted on the mounting bracket, a rotating shaft rotatably mounted on the fixed shaft, and a connecting arm fixedly connecting the rotating shaft and the display screen housing; the display screen housing can be rotated relative to the mounting bracket in a vertical plane from a high working position to a low maintenance position via the rotating mechanism. One end of the gas spring is connected to the mounting bracket, and the other end is connected to the connecting arm. The gas spring provides damping force throughout the entire rotation of the display screen cover from the working position to the maintenance position, so that the rotation speed of the display screen cover is controlled. The safety hook has a fixed end and a free end. The fixed end is disposed on the mounting bracket or the top frame. When the display screen cover is rotated open, the free end automatically hooks into the pre-set hook part of the display screen cover to lock the display screen cover in a safe position. The limiting plunger is disposed on the rotating shaft, and a connector is fixedly connected to the display screen cover. The connector is provided with at least one positioning hole. When the display screen cover is rotated to the maintenance position, the end of the limiting plunger is inserted into the positioning hole on the connector to limit the rotation limit position of the display screen cover. The damping force of the gas spring, the automatic engagement of the safety hook, and the abutment of the limiting plunger work together to ensure that the speed of the display screen cover is controlled during the lowering process, and that it is reliably held and accurately positioned when it reaches the maintenance position.

[0007] Furthermore, the limiting plunger is a spring plunger with an elastic element inside. The end of the limiting plunger can be compressed and retracted when subjected to external force, and can automatically return and extend after the external force disappears.

[0008] Furthermore, the safety hook is fixed in position, and its free end is elastic and extends toward the rotation path of the display screen housing or the connecting arm; The display screen housing is provided with a hook portion that matches the free end; The free end is also provided with a manual operation part, which is integrally formed with the free end and is used to disengage the free end from the hook part under the action of external force.

[0009] Furthermore, it also includes a lock, which is disposed on the connecting bracket. When the display screen cover is in the working position, the lock engages with the latch on the rotating shaft to lock the display screen cover in the working position.

[0010] Furthermore, it also includes a lever connected to the lock for an operator to hold in order to rotate the display screen housing.

[0011] Furthermore, the gas spring is selected based on the total weight of the display screen and the display screen housing, so that the damping force of the gas spring matches the total weight.

[0012] Furthermore, the mounting bracket, the fixed axis, the rotating axis, the connecting arm, the safety hook, and the limiting plunger constitute a universal mounting module; the universal mounting module can adapt to the installation of displays of different weights by replacing the gas springs of different specifications, while the mounting interface of the universal mounting module remains unchanged.

[0013] Furthermore, the limiting plunger is mounted on the rotating shaft, and its axial direction is perpendicular to the rotation plane of the connecting arm.

[0014] Furthermore, the connecting arm is provided with a heavy-duty pin, and the mounting bracket is provided with a stop block corresponding to the position of the heavy-duty pin; when the display screen cover is rotated to the limit position, the heavy-duty pin abuts against the stop block to achieve mechanical hard limiting.

[0015] A method for lowering a display screen using a suspended display screen mounting structure includes the following steps: Unlocking steps: Release the lock on the display cover; Lowering steps: The free end of the safety hook automatically engages with the hook part of the display screen cover, hanging the display screen cover in a safe position. The operator applies external force, so that the display screen cover, under the buffering effect of the gas spring, is smoothly rotated from the high working position to the low maintenance position through the rotating mechanism. Hanging procedure: The limiting plunger locks the display screen cover to limit the rotation limit position of the display screen cover.

[0016] By setting up a rotating mechanism consisting of a fixed axis, a rotating axis, and a connecting arm, the physical position of the entire display screen is transferred from a high working position on the roof of the vehicle to a low maintenance position, eliminating the safety risks of maintenance personnel working at heights. By incorporating a gas spring in the rotating mechanism, which provides damping force throughout the entire rotation of the display screen from the working position to the maintenance position, the rotation speed is controlled and the movement is smooth, avoiding rapid falls due to gravity and significantly reducing the physical exertion required for operation. A dual safety protection system is formed by a safety hook and a limit plunger. The safety hook automatically engages with a preset engagement part when the display screen rotates, while the limit plunger precisely limits the rotation limit position, ensuring accurate positioning for each operation and preventing overload of the mechanism. In addition, this structure has good modularity. The mounting bracket, rotating mechanism, safety hook, and limit plunger form a universal installation module. By replacing different specifications of gas springs, it can be adapted to display screens of different weights, significantly reducing the development and adaptation costs for products of multiple models and specifications. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the display screen in its initial working position in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the display screen being lowered to a safe position and the safety hook being engaged in an embodiment of the present invention; Figure 4 This is a schematic diagram of the initial position structure of the heavy-duty pin and the stop block in an embodiment of the present invention; Figure 5 This is a schematic diagram of the heavy-duty pin-stop block forming the first-level limit in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure in which the limiting plunger is inserted into the positioning hole and the display screen is locked in the maintenance position in an embodiment of the present invention.

[0019] Figure label: 1. Display screen housing; 2. Fixed axis; 3. Rotating axis; 4. Connecting arm; 5. Gas spring; 6. Mounting bracket; 7. Lock; 8. Safety hook; 9. Limiting plunger; 10. Pull rod; 11. Top frame; 12. Heavy-duty pin; 13. Stop block. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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. Therefore, they should not be construed as limitations on this invention.

[0022] A type of hanging display screen installation structure, such as Figures 1-6 As shown, it includes a mounting bracket 6, a display screen housing 1, a rotating mechanism, a gas spring 5, a safety hook 8, and a limit plunger 9; The mounting bracket 6 is fixedly connected to the top frame 11 of the carriage; The display screen housing 1 is used to accommodate and fix the display screen; The rotating mechanism includes a fixed shaft 2 fixedly mounted on the mounting bracket 6, a rotating shaft 3 rotatably mounted on the fixed shaft 2, and a connecting arm 4 fixedly connecting the rotating shaft 3 and the display screen housing 1; the display screen housing 1 can be rotated relative to the mounting bracket 6 in a vertical plane from a high working position to a low maintenance position through the rotating mechanism. One end of the gas spring 5 is connected to the mounting bracket 6, and the other end is connected to the connecting arm 4. The gas spring 5 provides damping force throughout the entire rotation of the display screen cover 1 from the working position to the maintenance position, so that the rotation speed of the display screen cover 1 is controlled. The safety hook 8 has a fixed end and a free end. The fixed end is disposed on the top frame 11. When the display screen cover 1 is rotated open, the free end automatically hooks into the pre-set hook part on the display screen cover 1 to lock the display screen cover 1 in a safe position. The limiting plunger 9 is disposed on the rotating shaft 3, and a connector is fixedly connected to the display screen cover 1. The connector is provided with at least one positioning hole. When the display screen cover 1 is rotated to the maintenance position, the end of the limiting plunger 9 is inserted into the positioning hole on the connector to limit the rotation limit position of the display screen cover 1. The damping force of the gas spring 5, the automatic engagement of the safety hook 8, and the abutment of the limiting plunger 9 work together to ensure that the speed of the display screen cover 1 is controlled during the lowering process, and that it is reliably held and accurately positioned when it reaches the maintenance position.

[0023] Specifically, the mounting bracket 6 serves as the mounting base for the entire device, and is fixedly connected to the top frame 11 of the vehicle body by bolts to ensure structural stability during vehicle operation. The display screen housing 1 is used to house and fix the display screen, and it is directly connected to subsequent moving parts. To realize the position transfer of the display screen, a rotating mechanism is provided. This mechanism specifically includes a fixed shaft 2 fixedly mounted on the mounting bracket 6, a rotating shaft 3 rotatably mounted on the fixed shaft 2, and a connecting arm 4 with one end fixedly connected to the rotating shaft 3 and the other end fixedly connected to the display screen housing 1. Through this structure, the display screen housing 1, the connecting arm 4, and the rotating shaft 3 form a linked whole, which can rotate relative to the fixed mounting bracket 6 in a vertical plane around the axis of the fixed shaft 2, thereby realizing the switching from a high working position to a low maintenance position. To provide assistance and safety during the flipping process, a gas spring 5 is provided, with one end of the gas spring 5 hinged to the mounting bracket 6 and the other end hinged to the connecting arm 4. The gas spring 5, after selection and calculation, has a damping force that matches the total weight of the display screen and its housing 1. It provides controllable damping force throughout the entire rotation of the display screen housing 1 from the high working position to the low maintenance position, ensuring controlled rotation speed and smooth movement, and preventing rapid descent due to gravity. To ensure the safety of personnel and equipment during maintenance, a safety hook 8 and a limiting plunger 9 are provided when the display screen housing 1 rotates to the preset maintenance position. Specifically, the safety hook 8 has a fixed end and a free end. The fixed end is fixed to the top frame 11, while the free end is elastic and extends towards the rotation path of the connecting arm 4 or the display screen housing 1. Correspondingly, a hook portion is preset on the display screen housing 1. When the display screen housing 1 rotates open, it automatically engages with the preset hook portion, thus reliably holding the display screen housing 1 in a safe position. Meanwhile, the limiting plunger 9 is located on the side of the rotating shaft 3, and its axial direction is preferably perpendicular to the rotation plane of the connecting arm 4. When the display screen cover 1 rotates to the first limit position, the heavy-duty pin 12 on the connecting arm 4 abuts against the stop block 13 on the mounting bracket 6, forming a first-level mechanical hard limit. At this time, the operator pulls out the limiting plunger 9 located on the rotating shaft 3, disengaging it from the current positioning hole on the connector (not shown in the figure) that is fixedly connected to the display screen cover 1, and then continues to rotate the display screen cover 1. When the display screen cover 1 rotates to the preset maintenance position, the limiting plunger 9 is released, and its end automatically inserts into another corresponding positioning hole on the connector under the action of elastic force, thereby precisely locking the display screen cover 1 in the maintenance position. Pushing the display screen cover 1 upward, the gas spring 5 also provides buffering assistance in this process, making the reset process equally smooth and effortless. This solution first uses a rotating mechanism consisting of a fixed axis 2, a rotating axis 3, and a connecting arm 4 to physically move the entire display screen from a high position on the roof of the vehicle to a lower position that is easier to operate, thus fundamentally eliminating the safety risks of maintenance personnel having to work at heights.Secondly, the introduction of the gas spring 5 is not a simple connection, but rather, through the damping force it provides throughout the entire process, it ensures that the display screen, weighing tens of kilograms, remains under control during lowering and resetting, preventing safety accidents or equipment damage caused by uncontrolled falls. Furthermore, the safety hook 8 and the limiting plunger 9 form a dual safety protection system: the safety hook 8 eliminates the safety hazard of the display screen falling rapidly; the limiting plunger 9 precisely limits the endpoint of the movement, ensuring accurate positioning for each operation and preventing overload of the mechanism. Finally, this structure has excellent modularity; the mounting bracket 6, rotating mechanism, safety hook 8, and limiting plunger 9 can form a universal installation module. By replacing different specifications of the gas spring 5, it can adapt to display screens of different weights, significantly reducing the adaptation cost for different vehicle models or display screen sizes.

[0024] As a preferred embodiment of the above, such as Figures 1-6 As shown, the limiting plunger 9 is a spring plunger with an elastic element inside. The end of the limiting plunger 9 can be compressed and retracted when subjected to external force, and can automatically return and extend after the external force disappears.

[0025] Specifically, the limiting plunger 9 is a spring plunger with an elastic element inside. The end of the limiting plunger 9 can be compressed and retracted when subjected to external force, and can automatically return and extend after the external force disappears, thus having a rigid limiting function.

[0026] As a preferred embodiment of the above, such as Figures 1-6 As shown, the safety hook 8 is fixed in position, and its free end is elastic and extends toward the rotation path of the display screen housing 1 or the connecting arm 4. The display screen housing 1 is provided with a hook part that matches the free end; The free end is also provided with a manual operation part, which is integrally formed with the free end and is used to disengage the free end from the hook part under the action of external force.

[0027] Specifically, the safety hook 8 is mounted on the top frame 11 with its fixed end, and its free end is elastic, allowing it to deform under external force and automatically reset after the force disappears. During the lowering process of the display screen housing 1 from the high working position to the low maintenance position, the edge of the display screen housing 1 first contacts the pre-set hook portion on the elastic free end of the safety hook 8, achieving fully automated hooking. When maintenance is complete and reset is required, the operator does not need to move the manual operating part on the free end; simply pushing the display screen housing 1 upwards causes it to automatically push the free end of the safety hook outwards as it passes the safety hook. After passing the safety hook position, the display screen housing 1 automatically locks, completing the reset. Integrating the manual operating part with the free end ensures direct operation and structural stability, avoiding reliability risks associated with additional moving parts.

[0028] As a preferred embodiment of the above, such as Figures 1-6 As shown, it also includes a lock 7, which is disposed on the mounting bracket 6. When the display screen cover 1 is in the working position, the lock 7 engages with the latch on the rotating shaft 3 to lock the display screen cover 1 in the working position.

[0029] Specifically, the system also includes a lock 7, which is mounted on the mounting bracket 6. When the display screen housing 1 is in the working position, the lock 7 engages with the latch on the rotating shaft 3 to lock the display screen housing 1 in the working position. This structure allows the lock 7 and the aforementioned safety hook 8 to form a complementary safety system. The lock 7 is responsible for locking the working position, preventing the display screen from accidentally opening due to vibration during train operation, thus ensuring train safety. The safety hook 8 provides secondary safety protection, preventing the display screen from falling after accidental opening, thus ensuring personnel safety. Together, they constitute a safety protection system, ensuring that the equipment is reliably locked in both operation and maintenance states.

[0030] As a preferred embodiment of the above, such as Figures 1-6 As shown, it also includes a pull rod 10, which is mounted on the lock 7 and is used by the operator to hold and rotate the display screen cover 1.

[0031] Specifically, the system also includes a pull rod 10, which is mounted on the lock 7 and is used by the operator to hold and operate the rotating structure of the display screen cover 1. The pull rod 10 provides an ergonomic operating point, allowing the operator to apply force in a more natural and effortless manner, avoiding uneven force distribution or screen damage that may be caused by directly pushing or pulling the display screen body, and further improving the convenience and safety of operation.

[0032] As a preferred embodiment of the above, such as Figures 1-6 As shown, the gas spring 5 is selected according to the total weight of the display screen and the display screen housing 1, so that the damping force of the gas spring 5 matches the total weight.

[0033] Specifically, the gas spring 5 is selected based on the total weight of the display screen and its housing 1, ensuring that its damping force matches the total weight. This guarantees that the damping characteristics of the gas spring 5 are precisely matched to the load, ensuring that the display screen always receives appropriate damping force during lowering and resetting: neither too little damping leading to a stall and fall, nor too much damping causing strenuous operation. This ensures smooth and controllable rotation operation under different weight configurations.

[0034] As a preferred embodiment of the above, such as Figures 1-6As shown, the mounting bracket 6, the fixed shaft 2, the rotating shaft 3, the connecting arm 4, the safety hook 8, and the limiting plunger 9 constitute a universal mounting module; the universal mounting module can adapt to the installation of displays of different weights by replacing the gas springs 5 ​​of different specifications, while the installation interface of the universal mounting module remains unchanged.

[0035] Specifically, the mounting bracket 6, the fixed shaft 2, the rotating shaft 3, the connecting arm 4, the safety hook 8, and the limiting plunger 9 constitute a universal mounting module. This universal mounting module can accommodate displays of different weights by replacing the gas springs 5 ​​with different specifications, while maintaining the same mounting interface. The core motion mechanism and safety components are integrated into a single module, with their mounting interface with the vehicle roof frame 11 and the mating relationships between each component remaining fixed. When adapting to displays of different weights or sizes, only the corresponding gas spring 5 needs to be replaced, without redesigning the entire mounting structure. This significantly reduces the development costs and inventory management costs for multiple vehicle models and specifications.

[0036] As a preferred embodiment of the above, such as Figures 1-6 As shown, the limiting plunger 9 is mounted on the rotating shaft 3, and its axial direction is perpendicular to the rotation plane of the connecting arm 4.

[0037] Specifically, the limiting plunger 9 is installed on the rotating shaft 3, with its axis direction perpendicular to the rotation plane of the connecting arm 4, and the force direction is perpendicular to the movement direction, ensuring the stability and reliability of the limiting.

[0038] As a preferred embodiment of the above, such as Figures 1-6 As shown, the connecting arm 4 is provided with a heavy-duty pin 12, and the mounting bracket 6 is provided with a stop block 13 corresponding to the position of the heavy-duty pin 12; when the display screen cover 1 is rotated to the limit position, the heavy-duty pin 12 abuts against the stop block 13 to achieve mechanical hard limiting.

[0039] Specifically, the heavy-duty pin 12 set on the connecting arm 4 first contacts the stop block 13 set on the mounting bracket 6, forming the first-level mechanical hard limit, so that the display screen stops at... Figure 5 As shown in the diagram; the operator pulls open the limit plunger 9, rotates the display screen cover 1 to the horizontal maintenance position, releases the limit plunger 9, and after it resets, it locks the display screen cover 1, forming a second-level limit and maintenance position lock, as shown. Figure 6 As shown. Through the coordination of two levels of limit switches, both the safety and controllability of the movement process are ensured, and the reliable locking of the maintenance state is achieved.

[0040] A method for lowering a display screen using a suspended display screen mounting structure includes the following steps: Unlocking steps: Release the lock on display cover 1; Lowering steps: The free end of the safety hook (8) automatically hooks into the hook part of the display screen cover (1), and the display screen cover (1) is hung in a safe position. The operator applies external force so that the display screen cover (1) is smoothly rotated from the high working position to the low maintenance position through the rotating mechanism under the buffering effect of the gas spring (5). Hanging steps: The limiting plunger 9 locks the display screen cover 1 to limit the rotation limit position of the display screen cover 1.

[0041] Specifically, the unlocking step is performed first. The operator pulls the lever 10 to operate the lock 7, releasing the display screen cover 1 from the constraint state of the working position. The display screen cover 1 rotates and falls to be suspended by the safety hook 8. The operator must first manually open the free end of the safety hook 8 to remove it from the initial interference position. Under the damping buffering effect of the gas spring 5, the display screen cover 1 rotates smoothly and in a controlled manner from the high working position to the low maintenance position through the rotation mechanism composed of the fixed shaft 2, the rotating shaft 3 and the connecting arm 4. During this process, the damping force of the gas spring 5 matches the total weight of the display screen and the display screen cover 1, ensuring that the rotation speed is always within a controllable range and avoiding a sudden fall due to gravity. Finally, the hanging step is performed. The limiting plunger 9 installed on the side of the rotating shaft 3 is pulled open. When the display screen cover 1 rotates to the preset maintenance position, the limiting plunger 9 is released, and the limiting plunger locks the display screen cover 1 again. This completes the lowering process, allowing operators to perform maintenance on the display screen in a safe and stable condition. Compared to existing maintenance methods that require multiple people to lift and disassemble at height, this method firstly transforms the complex operation originally performed at a height into a simple process that can be completed at a low height through the organic combination of three steps: unlocking, lowering, and hanging. This fundamentally eliminates the risk of falls from heights. Secondly, the damping intervention of the gas spring 5 during the lowering step allows operators to easily control the lowering speed and posture of the display screen, completely changing the traditional operation mode that requires multiple people to cooperate and exert effort to lift, significantly reducing labor intensity and improving operational efficiency. Furthermore, the automatic engagement of the safety hook 8 and the mechanical limit of the limiting plunger 9 in the hanging step provide double protection: the automatic engagement eliminates the possibility of manually forgetting to lock the hook, ensuring that the display screen will not unexpectedly bounce back during maintenance; the limiting plunger provides a clear end point indication and mechanical stop, avoiding equipment damage caused by over-operation.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hanging display screen installation structure, characterized in that, Includes mounting bracket (6), display screen cover (1), rotating mechanism, gas spring (5), safety hook (8), and limit plunger (9); The mounting bracket (6) is fixedly connected to the top frame (11) of the carriage. The display screen housing (1) is used to accommodate and fix the display screen; The rotating mechanism includes a fixed shaft (2) fixedly mounted on the mounting bracket (6), a rotating shaft (3) rotatably mounted on the fixed shaft (2), and a connecting arm (4) fixedly connecting the rotating shaft (3) and the display screen cover (1); the display screen cover (1) can be rotated from a high working position to a low maintenance position in the vertical plane relative to the mounting bracket (6) through the rotating mechanism; One end of the gas spring (5) is connected to the mounting bracket (6), and the other end is connected to the connecting arm (4). The gas spring (5) provides damping force throughout the entire process of the display screen cover (1) rotating from the working position to the maintenance position, so that the rotation speed of the display screen cover (1) is controlled. The safety hook (8) has a fixed end and a free end. The fixed end is set on the top frame (11). When the display screen cover (1) is rotated open, the free end automatically hooks onto the pre-set hook part on the display screen cover (1) to lock the display screen cover (1) in a safe position. The limiting plunger (9) is disposed on the rotating shaft (3), and a connector is fixedly connected to the display screen cover (1). The connector is provided with at least one positioning hole. When the display screen cover (1) is rotated to the maintenance position, the end of the limiting plunger (9) is inserted into the positioning hole on the connector to limit the rotation limit position of the display screen cover (1). The damping force of the gas spring (5), the automatic engagement of the safety hook (8), and the abutment of the limiting plunger (9) work together to ensure that the speed of the display screen cover (1) is controlled during the lowering process, and that it is reliably held and accurately positioned when it reaches the maintenance position.

2. The hanging display screen installation structure according to claim 1, characterized in that, The limiting plunger (9) is a spring plunger with an elastic element inside. The end of the limiting plunger (9) can be compressed and retracted when subjected to external force, and can automatically reset and extend after the external force disappears.

3. The hanging display screen installation structure according to claim 1, characterized in that, The safety hook (8) is fixed in position, and its free end is elastic and extends toward the rotation path of the display screen cover (1) or the connecting arm (4); The display screen housing (1) is provided with a hook part that matches the free end; The free end is also provided with a manual operation part, which is integrally formed with the free end and is used to disengage the free end from the hook part under the action of external force.

4. The hanging display screen installation structure according to claim 1, characterized in that, It also includes a lock (7), which is mounted on the mounting bracket (6). When the display screen cover (1) is in the working position, the lock (7) engages with the latch on the rotating shaft (3) to lock the display screen cover (1) in the working position.

5. The hanging display screen installation structure according to claim 4, characterized in that, It also includes a lever (10) connected to the lock (7) for an operator to hold in order to rotate the display screen housing (1).

6. The hanging display screen installation structure according to claim 1, characterized in that, The gas spring (5) is selected according to the total weight of the display screen and the display screen cover (1) so that the damping force of the gas spring (5) matches the total weight.

7. The hanging display screen installation structure according to claim 1, characterized in that, The mounting bracket (6), the fixed shaft (2), the rotating shaft (3), the connecting arm (4), the safety hook (8), and the limiting plunger (9) constitute a universal mounting module. The universal mounting module can adapt to the installation of displays of different weights by replacing the gas springs (5) of different specifications, and the installation interface of the universal mounting module remains unchanged.

8. The hanging display screen installation structure according to claim 2, characterized in that, The limiting plunger (9) is mounted on the rotating shaft (3), and its axial direction is perpendicular to the rotation plane of the connecting arm (4).

9. The hanging display screen installation structure according to claim 1, characterized in that, The connecting arm (4) is provided with a heavy-duty pin (12), and the mounting bracket (6) is provided with a stop block (13) corresponding to the position of the heavy-duty pin (12). When the display screen cover (1) is rotated to the limit position, the heavy-duty pin (12) abuts against the stop block (13) to achieve mechanical hard limit.

10. A method for lowering a display screen using the hanging display screen mounting structure according to any one of claims 1 to 9, characterized in that, Includes the following steps: Unlocking steps: Release the lock on the display cover (1); Lowering steps: The free end of the safety hook (8) automatically hooks into the hook part of the display screen cover (1), and the display screen cover (1) is hung in a safe position. The operator applies external force so that the display screen cover (1) is smoothly rotated from the high working position to the low maintenance position through the rotating mechanism under the buffering effect of the gas spring (5). Hanging steps: The limiting plunger (9) locks the display screen cover (1) to limit the rotation limit position of the display screen cover (1).

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