Push-pull extension hinge for liquid crystal display

Abstract

The utility model discloses a push and pull extension hinge of liquid crystal display screen, including wall fixed support, the front end swing joint of wall fixed support has hinge body, the front end of hinge body is provided with display screen fixed support, the upper end fixed connection of wall fixed support has installation shell, the inboard of installation shell is provided with sensor, the outside of installation shell is equipped with two groups of symmetrical assembly hole, the assembly hole of installation shell outside and the hinge joint of hinge body align, the inboard of installation shell is installed with the lubricating mechanism of lubricating to the junction, the utility model discloses a push and pull extension hinge of liquid crystal display screen can be without manual intervention, realize the fixed time fixed quantity lubrication of core friction pair, promote maintenance efficiency, avoid the secondary damage of manual operation to equipment simultaneously, significantly reduce operation and maintenance cost and technical threshold.

Description

Technical Field

[0001] This utility model relates to the field of hinge mechanism technology, and in particular to a push-pull extension hinge for a liquid crystal display screen. Background Technology

[0002] Embedded LCD displays, with their clean appearance, high space utilization, and excellent protection performance, have been widely used in various fields such as industrial control terminals, medical diagnostic equipment, smart home central control, and automotive display systems. To address the inconvenience of inspecting and maintaining the wiring on the back of the display after embedded installation, a push-pull extension hinge has become a core component. Its core function is to allow for the exposure of the wiring on the back of the display for maintenance without disassembling the entire unit through horizontal push-pull extension and multi-angle rotation.

[0003] Patent CN202475627U discloses a hinge device for a wall-mounted LCD TV. The hinge device comprises a horizontal rotating hinge assembly, a vertical rotating hinge assembly, and connecting members fixed to the horizontal and vertical rotating hinge assemblies respectively. The connecting members are fixed to the TV mounting plate and the wall mounting plate respectively. The horizontal rotating hinge assembly includes a rotating shaft I and a bushing I, and the vertical rotating hinge assembly includes a rotating shaft II and a bushing II. The rotating shaft I and rotating shaft II are nested to form a cross-shaped rotating part of the hinge device. This design ensures stable installation of the wall-mounted LCD TV while meeting the viewing needs of multiple angles and heights.

[0004] However, the above technical solutions still have the following shortcomings in practical applications:

[0005] This device only includes horizontal and vertical rotating hinge components, lacks any automatic lubrication structure, and relies on manual disassembly and maintenance, which is cumbersome and prone to damaging the equipment. Lubrication precision and uniformity are insufficient, and the core friction pairs are easily worn due to improper lubrication. It also lacks a sealing and leak-proof structure, allowing lubricating oil to leak and contaminate the equipment. Furthermore, it cannot meet the protection requirements of embedded installations and is difficult to adapt to the long-term stable operation needs of industrial control, medical equipment, and other scenarios. To solve these problems, we propose a push-pull extension hinge for LCD displays. Summary of the Invention

[0006] The main purpose of this utility model is to provide a push-pull extension hinge for a liquid crystal display screen, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A push-pull extension hinge for an LCD screen includes a wall mount. A hinge body is movably connected to the front end of the wall mount. A display screen mount is located at the front end of the hinge body. A mounting housing is fixedly connected to the upper end of the wall mount. A sensor is located on the inner side of the mounting housing. Two sets of symmetrical mounting holes are provided on the outer side of the mounting housing. The mounting holes on the outer side of the mounting housing are aligned with the hinge joints of the hinge body. A lubrication mechanism for lubricating the connection is installed on the inner side of the mounting housing.

[0009] Preferably, the lubrication mechanism includes a motor installed at the rear end of the mounting housing. The output shaft of the motor is fixedly connected to one of the two first connecting rods via a rotating shaft. The inner sides of the two first connecting rods are respectively rotatably connected to the mounting housing via rotating shafts. The two first connecting rods are each rotatably connected to a second connecting rod at their closest ends via rotating shafts.

[0010] Preferably, the two second connecting rods are rotatably connected to a first rotating shaft at their close ends, and a third connecting rod is rotatably connected to the outside of the first rotating shaft. An oil drum is rotatably connected to the outside of the third connecting rod via the rotating shaft.

[0011] Preferably, the two second connecting rods are each rotatably connected to a fourth connecting rod at their closest ends via a pivot. The inner side of each fourth connecting rod is rotatably connected to two symmetrical fixing blocks via a pivot. The lower ends of the two fixing blocks are fixedly connected to the mounting housing. The inner side of each fixing block is rotatably connected to two symmetrical fifth connecting rods via a pivot. The inner side of each of the two fifth connecting rods is rotatably connected to a sixth connecting rod via a pivot. The inner side of the sixth connecting rod is rotatably connected to another oil drum among the two oil drums via a pivot.

[0012] Preferably, two assembly holes are provided on the outer side of each of the two oil drums, and a fixing rod is fixedly connected to the inner side of each of the two oil drums. Two symmetrical flexible clamps are rotatably connected to the outer side of the fixing rod, and a spring is provided on the side of the two flexible clamps that are close to each other.

[0013] Preferably, a storage tank is fixedly connected to the inner side of one of the two flexible clamps, and a spray head is provided on the inner side of the storage tank. A slider is fixedly connected to the inner side of the other flexible clamp, and a sealing block is fixedly connected to the lower end of the slider. The outer side of the sealing block is slidably connected to the inner side of the storage tank.

[0014] Compared with the prior art, this utility model has the following beneficial effects: The push-pull extension hinge of the LCD screen triggers the position sensor through hinge reset, automatically starting the motor to drive the linkage mechanism to drive the lubrication mechanism to accurately spray oil. This achieves timed and quantitative lubrication of the core friction pair without manual intervention, improving maintenance efficiency and avoiding secondary damage to the equipment caused by manual operation, significantly reducing maintenance costs and technical barriers. The linkage mechanism drives two sets of oil tanks to move synchronously and symmetrically, with the storage tank precisely aligned with the hinge joint through the assembly hole. The spray head sprays lubricating oil in a directional manner, ensuring full coverage of the core friction pair. Simultaneously... The spring-driven metered oil dispensing structure avoids excessive or insufficient lubrication, reducing frictional resistance in hinge movement, extending service life, and significantly reducing malfunctions such as jamming and wear. A composite sealing structure of sealing blocks, flexible clamps, and springs ensures a tight seal between the sealing block and the oil outlet of the storage tank after lubrication. The oil tank provides directional oil supply through the delivery channel, effectively preventing leakage. Combined with the dustproof sealing design of the mounting housing, this ensures the cleanliness of the embedded installation environment and prevents leaked lubricating oil from corroding wiring, motors, and other components, thus improving equipment operational stability and protection performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the push-pull extension hinge of the liquid crystal display screen of this utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of the overall structure of the push-pull extension hinge of the liquid crystal display screen of this utility model.

[0017] Figure 3 This is a cross-sectional schematic diagram of the overall structure of the lubrication mechanism of the push-pull extension hinge of the liquid crystal display screen of this utility model;

[0018] Figure 4 The push-pull extension hinge for the liquid crystal display screen of this utility model Figure 3 Enlarged diagram of part A in the middle;

[0019] Figure 5 This is a cross-sectional schematic diagram of the lubrication mechanism of the push-pull extension hinge of the liquid crystal display screen of this utility model.

[0020] In the diagram: 1. Wall mounting bracket; 2. Hinge body; 3. Display screen mounting bracket; 4. Mounting housing; 5. Lubrication mechanism; 51. Motor; 52. First connecting rod; 53. Second connecting rod; 54. First rotating shaft; 55. Third connecting rod; 56. Oil drum; 57. Fourth connecting rod; 58. Fixing block; 59. Fifth connecting rod; 510. Sixth connecting rod; 511. Fixing rod; 512. Flexible clamping plate; 513. Spring; 514. Storage tank; 515. Slider; 516. Sealing block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-5 As shown, the push-pull extension hinge of the LCD screen includes a wall mounting bracket 1, a hinge body 2 movably connected to the front end of the wall mounting bracket 1, a display screen mounting bracket 3 set at the front end of the hinge body 2, a mounting housing 4 fixedly connected to the upper end of the wall mounting bracket 1, a sensor set on the inner side of the mounting housing 4, two sets of symmetrical mounting holes opened on the outer side of the mounting housing 4, the mounting holes on the outer side of the mounting housing 4 are aligned with the hinge joint of the hinge body 2, and a lubrication mechanism 5 for lubricating the connection is installed on the inner side of the mounting housing 4.

[0023] In this embodiment, the lubrication mechanism 5 includes a motor 51 installed at the rear end of the mounting housing 4. The output shaft of the motor 51 is fixedly connected to one of the two first connecting rods 52 via a rotating shaft. The inner sides of the two first connecting rods 52 are rotatably connected to the mounting housing 4 via rotating shafts. The two first connecting rods 52 are rotatably connected to a second connecting rod 53 at their adjacent ends via rotating shafts.

[0024] Specifically, the motor 51 is the power source of the lubrication mechanism 5, which provides rotational power to drive the linkage mechanism; the two first links 52 use the mounting housing 4 as the hinge fulcrum to convert the rotational motion of the motor 51 into swing motion, thereby driving the second link 53 to move synchronously, realizing the initial transmission and diversion of power.

[0025] In this embodiment, the two second connecting rods 53 are rotatably connected to a first rotating shaft 54 ​​at their close ends. A third connecting rod 55 is rotatably connected to the outside of the first rotating shaft 54. An oil drum 56 is rotatably connected to the outside of the third connecting rod 55 via a rotating shaft.

[0026] Specifically, the first rotating shaft 54 ​​is used to connect the two second connecting rods 53 to ensure that the two swing synchronously and symmetrically; the third connecting rod 55 acts as a power transmission medium, converting the swing of the second connecting rod 53 into the horizontal linear motion of the oil drum 56, driving the oil drum 56 to move precisely along the inner wall of the mounting housing 4 to the preset lubrication position.

[0027] In this embodiment, the two second connecting rods 53 are rotatably connected to a fourth connecting rod 57 at their close ends via a pivot. The inner sides of the fourth connecting rods 57 are rotatably connected to two symmetrical fixing blocks 58 via a pivot. The lower ends of the two fixing blocks 58 are fixedly connected to the mounting housing 4. The inner sides of the fixing blocks 58 are rotatably connected to two symmetrical fifth connecting rods 59 via a pivot. The inner sides of the two fifth connecting rods 59 are rotatably connected to a sixth connecting rod 510 via a pivot. The inner side of the sixth connecting rod 510 is rotatably connected to another oil drum 56 of the two oil drums 56 via a pivot.

[0028] Specifically, the fourth link 57 receives the swinging power of the second link 53 and transmits it to the fifth link 59; the fixed block 58 provides a fixed hinge fulcrum for the fourth link 57 and the fifth link 59 to ensure the stability of the linkage mechanism; the fifth link 59 and the sixth link 510 work together to transmit the power to another set of oil drums 56, ensuring that the two sets of oil drums 56 always maintain a symmetrical synchronous motion state of approaching or moving away.

[0029] In this embodiment, two assembly holes are provided on the outer side of each of the two oil drums 56, and a fixing rod 511 is fixedly connected to the inner side of each of the two oil drums 56. Two symmetrical flexible clamps 512 are rotatably connected to the outer side of the fixing rod 511, and a spring 513 is provided on the side of the two flexible clamps 512 that are close to each other.

[0030] Specifically, the mounting hole on the outside of the oil drum 56 is used to construct an oil delivery channel for the flow of lubricating oil; the fixed rod 511 provides a rotating mounting carrier for the flexible clamp 512, enabling the flexible clamp 512 to rotate controllably around the fixed rod 511; the two symmetrical flexible clamps 512 are used to support the storage tank 514 and the slider 515, and drive them to move along the direction of the mounting hole through rotation; the spring 513 is pre-compressed to store elastic potential energy, providing power support for the ejection and oil spraying of the storage tank 514.

[0031] In this embodiment, a storage tank 514 is fixedly connected to the inner side of one of the two flexible clamps 512, and a spray head is provided on the inner side of the storage tank 514. A slider 515 is fixedly connected to the inner side of the other flexible clamp 512, and a sealing block 516 is fixedly connected to the lower end of the slider 515. The outer side of the sealing block 516 is slidably connected to the inner side of the storage tank 514.

[0032] Specifically, the storage tank 514 is used to temporarily store the lubricating oil to be sprayed, and the spray head on its inner side is used to spray the lubricating oil in a directional and uniform manner onto the core friction pair of the hinge body 2; the slider 515 is fixedly connected to the flexible clamp 512 and is used to drive the sealing block 516 to move synchronously; the sealing block 516 achieves the opening and closing of the oil outlet of the storage tank 514 through sliding cooperation with the inner side of the storage tank 514, disengages from the oil outlet when spraying oil, and tightly seals after lubrication, which not only ensures smooth oil supply but also prevents lubricating oil leakage.

[0033] It should be noted that this utility model is a push-pull extension hinge for an LCD screen. When in use, the wall mounting bracket 1 is first securely installed in the preset installation position on the inside of the wall, and then the LCD screen and the display mounting bracket 3 are connected and fixed with standard fasteners. By adjusting the push-pull and rotation structure of the hinge body 2, the horizontal extension, retraction and angle adjustment of the display screen can be realized to meet the needs of maintenance and inspection.

[0034] When the hinge body 2 is reset after use, it is stored inside the wall at the front end of the wall mounting bracket 1. At this time, the position sensor inside the mounting housing 4 accurately detects the complete reset signal of the hinge body 2, and then triggers the motor 51 installed at the rear end of the mounting housing 4 to start.

[0035] The output shaft of motor 51 drives one of the first connecting rods 52 to rotate around the hinge point of the mounting housing 4 via a rotating shaft. The first connecting rod 52 drives the corresponding second connecting rod 53 to swing via the rotating shaft. In turn, the first rotating shaft 54 ​​drives the other second connecting rod 53 and the first connecting rod 52 connected to it to swing synchronously and symmetrically. Finally, it drives an oil drum 56 to move smoothly along the inner wall of the mounting housing 4. At the same time, the two second connecting rods 53 drive the corresponding fourth connecting rods 57 to rotate around the hinge point of the fixed block 58. The fourth connecting rods 57 drive two sets of symmetrically arranged fifth connecting rods 59 to swing synchronously. The fifth connecting rods 59 drive the sixth connecting rod 510 to move via a rotating shaft. In turn, it drives the other oil drum 56 to move synchronously along the inner wall of the mounting housing 4. The two sets of oil drums 56 always maintain a symmetrical movement state of approaching or moving away from each other.

[0036] The assembly hole on the outside of the oil drum 56 is used to pre-set the oil delivery channel. The fixing rod 511 on its inner side is rotatably connected to two symmetrical flexible clamps 512 through a clamp. The flexible clamps 512 can rotate around the fixing rod 511 and synchronously drive the storage tank 514 and the slider 515 to move along the direction of the assembly hole. When the two sets of oil drums 56 move to the position corresponding to the assembly hole on the outside of the mounting shell 4, the storage tank 514 is precisely aligned with the assembly hole. The spring 513, which was previously in a compressed state, releases its elastic potential energy. The resulting rebound driving force drives the storage tank 514 to pop out in a straight line in the direction of the assembly hole. At the same time, the slider 515 moves synchronously with the storage tank 514, causing the sealing block 516 to disengage from the oil outlet of the storage tank 514. The lubricating oil in the oil drum 56 flows into the storage tank 514 through the pre-set oil delivery channel, and is then sprayed directionally by the spray head on the inside of the storage tank 514, accurately spraying an appropriate amount of lubricating oil onto the core friction pairs such as the hinge joint and the rotating shaft mating surface of the hinge body 2, thereby achieving automatic lubrication.

[0037] After lubrication is completed, the motor 51 rotates in reverse, driving the two sets of oil drums 56 to move away from each other through the linkage mechanism. The flexible clamp 512 rotates in reverse around the fixed rod 511 under the limiting action of the inner wall of the mounting shell 4, causing the storage tank 514 and the slider 515 to contract towards the inside of the oil drum 56, and the spring 513 is compressed again. Until the storage tank 514 and the slider 515 are completely misaligned with the mounting hole of the mounting shell 4, the sealing block 516 moves down with the slider 515 and fits tightly with the oil outlet of the storage tank 514 to form a closed structure. On the one hand, it cuts off the continuous output of lubricating oil from the oil drum 56 to the storage tank 514, and on the other hand, it achieves sealed storage of the oil drum 56, effectively preventing lubricating oil leakage and contamination of the equipment.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A push-pull extension hinge for a liquid crystal display screen, including a wall mounting bracket (1), characterized in that: The front end of the wall mounting bracket (1) is movably connected to a hinge body (2), and the front end of the hinge body (2) is provided with a display screen mounting bracket (3). The upper end of the wall mounting bracket (1) is fixedly connected to a mounting shell (4). A sensor is provided on the inner side of the mounting shell (4). Two sets of symmetrical mounting holes are opened on the outer side of the mounting shell (4). The mounting holes on the outer side of the mounting shell (4) are aligned with the hinge joint of the hinge body (2). A lubrication mechanism (5) for lubricating the connection is installed on the inner side of the mounting shell (4).

2. The push-pull extension hinge for a liquid crystal display screen according to claim 1, characterized in that: The lubrication mechanism (5) includes a motor (51) installed at the rear end of the mounting housing (4). The output shaft of the motor (51) is fixedly connected to one of the two first connecting rods (52) via a rotating shaft. The inner sides of the two first connecting rods (52) are rotatably connected to the mounting housing (4) via rotating shafts. The two first connecting rods (52) are rotatably connected to a second connecting rod (53) at their closest ends via rotating shafts.

3. The push-pull extension hinge for a liquid crystal display screen according to claim 2, characterized in that: The two second connecting rods (53) are rotatably connected to a first rotating shaft (54) at their close ends. A third connecting rod (55) is rotatably connected to the outside of the first rotating shaft (54). An oil drum (56) is rotatably connected to the outside of the third connecting rod (55) through a rotating shaft.

4. The push-pull extension hinge for a liquid crystal display screen according to claim 2, characterized in that: Two second connecting rods (53) are rotatably connected to a fourth connecting rod (57) at their close ends via a pivot. The inner side of each fourth connecting rod (57) is rotatably connected to two symmetrical fixing blocks (58) via a pivot. The lower ends of the two fixing blocks (58) are fixedly connected to the mounting housing (4). The inner side of each fixing block (58) is rotatably connected to two symmetrical fifth connecting rods (59) via a pivot. The inner side of each fifth connecting rod (59) is rotatably connected to a sixth connecting rod (510) via a pivot. The inner side of the sixth connecting rod (510) is rotatably connected to another oil drum (56) of the two oil drums (56) via a pivot.

5. The push-pull extension hinge for a liquid crystal display screen according to claim 4, characterized in that: Two assembly holes are provided on the outer side of each of the two oil drums (56), and a fixing rod (511) is fixedly connected to the inner side of each of the two oil drums (56). Two symmetrical flexible clamps (512) are rotatably connected to the outer side of the fixing rod (511). A spring (513) is provided on the side of the two flexible clamps (512) that are close to each other.

6. The push-pull extension hinge for a liquid crystal display screen according to claim 5, characterized in that: A storage tank (514) is fixedly connected to the inner side of one of the two flexible clamps (512). A spray head is provided on the inner side of the storage tank (514). A slider (515) is fixedly connected to the inner side of the other flexible clamp (512). A sealing block (516) is fixedly connected to the lower end of the slider (515). The outer side of the sealing block (516) is slidably connected to the inner side of the storage tank (514).

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