A COB display screen front maintenance negative pressure tool

Abstract

The application relates to a COB display screen front maintenance negative pressure tool, which comprises a fixed handle, two support arms extending in the same direction arranged at the two ends of the fixed handle, a movable handle arranged between the two support arms, and a suction disc arranged on the movable handle; the movable handle is slidably connected with the two support arms through a guide rail assembly; a first pressure relief air duct and a second pressure relief air duct, which are in communication with each other, are arranged on the movable handle and the inner wall of the suction disc respectively; a pressure relief switch is arranged on the movable handle and corresponds to the first pressure relief air duct; the whole structure is simple, light, convenient to move and low in manufacturing cost; when used, the vertical taking-out or installation of the COB module can be realized through the cooperation of the fixed handle and the movable handle, the damage of the surface packaging glue is avoided, the pressure relief switch is extremely convenient to operate, the operator can turn on or turn off the switch at any time, and the labor intensity of the operator is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic display screen, in particular to a COB display screen front maintenance negative pressure tool. BACKGROUND

[0002] The COB electronic screen is generally a modular assembly structure, that is, a plurality of COB modules are installed on a splicing box body, and the plurality of COB modules are generally distributed in a plane in a matrix manner. The COB module maintenance tools on the market are generally magnetic or air suction tools, and the air suction tools are divided into electric air suction type and mechanical pressing type. However, there are still many shortcomings in the above-mentioned maintenance tools, including:

[0003] The electric air suction type and the magnetic suction tool are expensive, bulky and heavy, and are extremely inconvenient to use. The COB module itself has a certain weight, so if the tool itself is heavy, the overall weight will be larger, and the operator cannot support the arm for a long time, which is not conducive to the work that needs to be installed for a long time.

[0004] The mechanical pressing type is to press the suction cup on the display module in advance, and then move the COB module and the tool out of the splicing box body together. However, the COB module cannot be guaranteed to be perpendicular to the splicing box body when the COB module is taken out of the COB module maintenance tool. The movement of the COB module is basically observed by the human eye, and the precision and reliability are very low, which is very easy to cause the epoxy resin glue on the surface of the COB chip and the surrounding other modules to be scratched, so as to damage the COB surface packaging glue. Therefore, the present application provides a COB display screen front maintenance negative pressure tool to solve the above-mentioned problems. SUMMARY

[0005] The present application aims at the shortcomings of the prior art, and provides a COB display screen front maintenance negative pressure tool, which can solve the above-mentioned problems.

[0006] To achieve the above requirements, the technical scheme adopted by the present application to solve the technical problems is:

[0007] A COB display screen front maintenance negative pressure tool is provided, which comprises a fixed handle, the two ends of the fixed handle are respectively provided with a support arm extending in the same direction; further comprising a movable handle arranged between the two support arms, and a suction cup arranged on the movable handle; the movable handle is slidably connected with the two support arms through a guide rail assembly, the first and second pressure relief air channels are arranged on the movable handle and the inner wall of the suction cup respectively, and the first pressure relief air channel is provided with a pressure relief switch.

[0008] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein the COB display screen front maintenance negative pressure tool further comprises an elastic reset component for resetting the movable handle.

[0009] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein the elastic reset component is located between the movable handle and the fixed handle, and two elastic reset components are respectively arranged at two ends of the movable handle.

[0010] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein the elastic reset component comprises a limiting shaft and a spring, one end of the limiting shaft is connected with the fixed handle, the other end of the limiting shaft is movably penetrated through the movable handle, and the spring is sleeved on the limiting shaft and located between the movable handle and the fixed handle.

[0011] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein two guide rail assemblies corresponding to the two support arms are arranged, each guide rail assembly comprises a guide rail arranged in the same direction as the support arm and a sliding block slidingly arranged on the guide rail, and two ends of the movable handle are respectively detachably connected with the two sliding blocks.

[0012] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein a baffle is arranged on each of the front and rear sides of the support arm relative to the guide rail assembly, and one end of the baffle adjacent to the fixed handle is connected through a reinforcing rib.

[0013] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein a suction disc seat for fixing the suction disc is arranged on the side of the movable handle away from the fixed handle, and a connecting channel for connecting the first pressure relief air channel and the second pressure relief air channel is arranged on the suction disc seat.

[0014] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein two suction discs are symmetrically arranged on the movable handle, and the pressure relief switch is arranged at one end of the movable handle.

[0015] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein a movable cavity for connecting the first pressure relief air channel is arranged on the movable handle, the pressure relief switch is arranged in the movable cavity, the pressure relief switch comprises a piston plug for plugging the first pressure relief air channel, a button for pushing the piston plug away from the first pressure relief air channel, and a reset spring for resetting the piston plug, a limiting step for blocking the button from sliding out is arranged on the inner wall of the movable cavity, a sealing gasket is arranged on the limiting step, and when assembled, the button abuts against the sealing gasket.

[0016] The COB display screen front maintenance negative pressure tool disclosed by the application, wherein a support plate is arranged at the bottom end of the support arm, and a buffer pad is arranged at the bottom end of the support plate.

[0017] The beneficial effect of the present application is that the COB display screen front maintenance negative pressure tool has simple overall structure, is light and convenient to move and has low manufacturing cost, and when used, the vertical taking out or installation of the COB module can be realized through the cooperation of the fixed handle and the movable handle, the damage of the surface packaging glue is well avoided, the pressure relief switch is also very convenient to operate, the operator can turn it on and off at any time, and the labor intensity of the operator is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the present application will be further described below in conjunction with the drawings and embodiments. The drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings:

[0019] Figure 1 is the overall structure diagram of the COB display screen front maintenance negative pressure tool of the present application.

[0020] Figure 2 is the overall explosion bird's eye view of the COB display screen front maintenance negative pressure tool of the present application.

[0021] Figure 3 is the overall explosion bottom view of the COB display screen front maintenance negative pressure tool of the present application.

[0022] Figure 4 is the horizontal sectional view of the movable handle of the COB display screen front maintenance negative pressure tool of the present application.

[0023] Figure 5 is the partial enlarged view of Figure 4 .

[0024] Figure 6 is the schematic diagram of the COB display screen front maintenance negative pressure tool when sucking the COB module.

[0025] Figure 7 is the schematic diagram of the COB display screen front maintenance negative pressure tool after taking out the COB module. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0027] The COB display screen front maintenance negative pressure tool of the preferred embodiment of the present application comprises a fixed handle 1, two support arms 2 extending in the same direction are vertically arranged at the two ends of the fixed handle 1, a movable handle 3 is arranged between the two support arms 2, and a suction cup 4 is arranged on the movable handle 3. Figures 1-7 As shown in the figure, the COB display screen front maintenance negative pressure tool of the preferred embodiment of the present application comprises a fixed handle 1, two support arms 2 extending in the same direction are vertically arranged at the two ends of the fixed handle 1, a movable handle 3 is arranged between the two support arms 2, and a suction cup 4 is arranged on the movable handle 3. The support arms 2 provide support force when the movable handle 3 sucks and takes out the COB module 100. The two ends of the movable handle 3 are slidably connected with the two support arms 2 through a guide rail assembly 5. The movable handle 3 and the inner wall of the suction cup 4 are respectively provided with a first pressure relief air duct 6 and a second pressure relief air duct 7 which are in communication with each other. The movable handle 3 is provided with a pressure relief switch 8 corresponding to the first pressure relief air duct 6. When in use, the vertical taking out or installation of the COB module can be realized through the cooperation of the fixed handle 1, the movable handle 3 and the guide rail assembly 5, which can well avoid the damage of the surface packaging glue of the COB module caused by the manual movement of the traditional tool. At present, the mechanical pressing tools on the market not only do not have the function of vertically taking out the COB module, but also need to hold the handle with the hand during use to ensure that the suction cup 4 remains in the adsorbed state, which makes the operator need to keep a movement for a long time when installing or dismounting, resulting in that the operator's wrist and fingers are very tired. In order to avoid the instability of the COB module adsorption leading to falling, another hand is generally used to assist in supporting the COB module, which is not safe for the installation environment of walking on the high stand. In contrast, the operator only needs to hold it with one hand after sucking the COB module, the fingers and wrists can also be appropriately moved, the pressure relief switch 8 is also very convenient to operate, and the operator can turn it on and off at any time, greatly reducing the labor intensity of the operator. Moreover, the overall structure of the tool is simple, light, convenient to move and use, and can be operated with one hand. The support arm 2 supports on the electronic screen, avoiding the need to press the surrounding COB module with another hand by the traditional tool, preventing the surrounding modules from being pulled up when the module is pulled up, effectively avoiding the whole screen shaking when the tool is pulled, achieving the purpose of well protecting the COB module, and the manufacturing cost is lower compared with the traditional magnetic suction and electric suction tools.

[0028] Preferably, the present application further comprises an elastic reset assembly 9 for resetting the movable handle 3. When the COB module is taken out and placed in place, the first pressure relief air duct 6 is opened through the pressure relief switch 8 to make air enter the inside of the suction cup 4, so as to separate the COB module from the suction cup 4. At this time, in order to suck the next COB module, the suction cup 4 and the movable handle 3 can be reset to the original initial position through the elastic reset assembly 9. Generally, the lower end of the suction cup 4 is lower than the lower end of the two support arms 2 in the initial state, so as to facilitate the preliminary adsorption of the suction cup 4 on the COB module.

[0029] Preferably, the elastic reset assembly 9 is located between the movable handle 3 and the fixed handle 1, so that the overall structure is compact and the volume is reduced, and the elastic reset assembly 9 is provided with two and located at both ends of the movable handle 3, so as to ensure the stability of the movement of the movable handle 3.

[0030] Preferably, the elastic reset assembly 9 includes a limiting shaft 91 and a spring 92; one end of the limiting shaft 91 is fixedly connected with the fixed handle 1, and the other end is movably penetrated through the movable handle 3, so as to ensure that the movable handle 3 can be freely moved, and the spring 92 is sleeved on the limiting shaft 91 and located between the movable handle 3 and the fixed handle 1, so as to reset the movable handle 3 to the initial position.

[0031] Preferably, the guide rail assembly 5 is provided with two corresponding to the two support arms 2, and the guide rail assembly 5 includes a guide rail 51 arranged in the same direction as the support arm 2 and a sliding block 52 slidingly arranged on the guide rail 51; the two guide rails 51 are fixed on the opposite side walls of the two support arms 2, respectively, and the two ends of the movable handle 3 are detachably connected with the two sliding blocks 52, so as to facilitate installation and disassembly.

[0032] Preferably, the support arm 2 is provided with a baffle 10 on the front and rear sides of the guide rail assembly 5, so as to protect the guide rail assembly 5, and also increase the strength of the support arm 2, and the end of the baffle 10 adjacent to the fixed handle 1 is connected through a reinforcing rib 11, so as to strengthen the connection strength between the support arm 2 and the fixed handle 1.

[0033] Preferably, the side of the movable handle 3 away from the fixed handle 1 is provided with a suction cup seat 12 of the fixed suction cup 4, and the suction cup seat 12 is provided with a connecting channel 18 connecting the first pressure relief air channel 6 and the second pressure relief air channel 7, so that the suction cup 4 can be conveniently fixed on the movable handle 3 through the suction cup seat 12.

[0034] Preferably, the suction cups 4 are provided with two and symmetrically arranged on the movable handle 3 to ensure the firmness of the suction COB module, to avoid the instability of the module suction and falling, the pressure relief switch 8 is located on the side wall of one end of the movable handle 3, to facilitate the thumb to touch, the movable handle 3 is provided with a movable cavity 13 communicating with the first pressure relief air duct 6, specifically, the first pressure relief air duct 6 communicates with the inner side wall of the movable cavity 13, the pressure relief switch 8 is arranged in the movable cavity 13, the pressure relief switch 8 includes a piston plug 81 blocking the first pressure relief air duct 6, a button 82 pushing the piston plug 81 away from the first pressure relief air duct 6 and a reset spring 83 resetting the piston plug 81; specifically, the piston plug 81 is in sliding sealing connection with the inner wall of the movable cavity 13, in order to further ensure the air tightness of the piston plug 81, the piston plug 81 can be further provided with a piston sealing ring (not shown in the figure), the inner wall of the movable cavity 13 is provided with a limiting step 14 blocking the button 82 from sliding out, the limiting step 14 is provided with a sealing pad 15, when assembled in place, the button 82 is abutted on the sealing pad 15 by the reset spring 83 to prevent external air from entering the movable cavity 13, in the initial state, the side wall of the piston plug 81 blocks the first pressure relief air duct 6, at this time, the inside of the suction cup 4 can form a nearly vacuum environment, when the COB module is completely taken out, only need to press the pressure relief switch 8 with the thumb when placing, and then push the plug away from the first pressure relief air duct 6, at this time, the outside air enters the first pressure relief air duct 6 through the gap between the button 82 and the inner wall of the movable cavity 13, and further enters the inside of the suction cup 4, and then realizes the separation of the suction cup 4 and the COB module, convenient and fast.

[0035] Preferably, the bottom end of the support arm 2 is provided with a support plate 16, and the bottom end of the support plate 16 is provided with a buffer pad 17 to protect the module where the support arm 2 is located.

[0036] In addition, the fixed handle 1 and the movable handle 3 can also be provided with a telescopic structure, thereby increasing the adaptability of the tool.

[0037] When the tool is used, the hand holds the fixed handle 1, the two support arms 2 are abutted on the other modules beside the COB module to be aligned, at this time, the suction cup 4 is aligned with the COB module, and further by pressing the movable handle 3, the suction cup 4 is firmly sucked on the COB module to be aligned, after the suction is stable, the four fingers hold tightly and pull the movable handle 3 towards the fixed handle 1, when the movable handle 3 is in place, the COB module to be aligned can be separated from the assembled box, in the process, the movement direction of the movable handle 3 is always perpendicular to the surface of the entire electronic screen 200 through the guide rail assembly 5, thereby ensuring that the COB module collides and extrudes with the other modules beside it, when the COB module is completely taken out, only need to press the pressure relief switch 8 with the thumb when placing, and then the suction cup 4 can be separated from the COB module, convenient and fast, the whole using process does not need to hold the movable handle 3 and the fixed handle 1 tightly together, thereby reducing the degree of fatigue of the hand and wrist.

[0038] It is to be understood that all such modifications and variations that can occur to those skilled in the art in the light of the foregoing description are to be considered within the scope of the application as defined in the claims appended hereto.

Claims

1. A COB display screen front maintenance negative pressure tool, characterized in that, The utility model provides a COB display screen front maintenance negative pressure tool, including fixed handle, two ends of fixed handle respectively are provided with one support arm extending to the same direction, still including the movable handle between two support arms and the sucking disc on movable handle, movable handle is connected through guide rail component with two support arms, the inner wall of sucking disc and movable handle is equipped with first pressure relief air channel and second pressure relief air channel who communicates with each other respectively, and the first pressure relief air channel is equipped with pressure relief switch on movable handle, The support arm is provided with a baffle on the front and back sides of the guide rail assembly, and the end adjacent to the fixed handle is connected by a reinforcing rib. The side of the movable handle away from the fixed handle is provided with a sucking disc seat for fixing the sucking disc, and the sucking disc seat is provided with a connecting channel for connecting the first pressure relief air channel and the second pressure relief air channel. The movable handle is provided with a movable cavity connected to the first pressure relief air channel, and the pressure relief switch is arranged in the movable cavity. The pressure relief switch includes a piston plug for blocking the first pressure relief air channel, a button for pushing the piston plug away from the first pressure relief air channel, and a return spring for returning the piston plug. The inner wall of the movable cavity is provided with a limiting step for blocking the button from sliding out, and the limiting step is provided with a sealing gasket. When assembled, the button abuts against the sealing gasket.

2. The COB display screen front maintenance negative pressure tool according to claim 1, wherein, The COB display screen front maintenance negative pressure tool further includes an elastic return assembly for returning the movable handle.

3. The COB display screen front maintenance negative pressure tool of claim 2, wherein, The elastic return assembly is located between the movable handle and the fixed handle, and the elastic return assembly is provided with two elastic return assemblies respectively located at the two ends of the movable handle.

4. The COB display screen front maintenance negative pressure tool of claim 2, wherein, The elastic return assembly includes a limiting shaft and a spring. One end of the limiting shaft is connected to the fixed handle, and the other end of the limiting shaft is movably penetrated through the movable handle. The spring is sleeved on the limiting shaft and located between the movable handle and the fixed handle.

5. The COB display front maintenance negative pressure tool of claim 1, wherein, The guide rail assembly is provided with two guide rail assemblies corresponding to the two support arms. The guide rail assembly includes a guide rail arranged in the same direction as the support arm and a sliding block slidingly arranged on the guide rail. The two ends of the movable handle are respectively detachably connected to the two sliding blocks.

6. The COB display front maintenance negative pressure tool of claim 1, wherein, The sucking disc is provided with two sucking discs symmetrically arranged on the movable handle, and the pressure relief switch is located at one end of the movable handle.

7. The COB display front maintenance negative pressure tool of claim 1, wherein, The bottom end of the support arm is provided with a support plate, and the bottom end of the support plate is provided with a buffer pad.

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