Magnetic unlocking fixture and display

Abstract

The present invention discloses a magnetic unlocking and fixing device and a display screen, and belongs to the technical field of display screens. The magnetic unlocking and fixing device includes a shell, a linkage part and a buckle. The side wall of the shell is provided with an escape opening, the linkage part is accommodated in the shell, and the linkage part can move relative to the shell, a part of the buckle is accommodated in the shell, the buckle is rotatably connected to the shell, and the buckle and the linkage part are arranged in linkage; in the initial state, the other part of the buckle is exposed outside the shell through the escape opening; when the linkage part is configured to be magnetically attracted by a magnetic tool, the linkage part moves close to the magnetic tool to drive the buckle to rotate, so that the buckle is retracted in the escape opening. The magnetic unlocking and fixing device in the present invention uses the buckle limiter to achieve fixation, and the installation reliability can meet the requirements of wind resistance and earthquake resistance. The magnetic force of the magnetic tool is used to achieve unlocking, which can well realize front maintenance, and is convenient for disassembly and assembly, saving time and effort, and can well meet various requirements of the fixing method.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and more particularly to a magnetic unlocking and fixing device and a display screen. Background Art

[0002] With the continuous development of LED display technology, the design requirements for the fixing methods in the field of LED display are becoming more and more stringent, and the simplicity and practicality of the fixing methods are becoming more and more important in the LED display industry. At present, in order to ensure the convenience of LED display maintenance, the display module and the cabinet of the general LED display are fixed by magnetic suction. The magnetic fixing method has low wind and earthquake resistance and poor safety and reliability.

[0003] In order to solve the problem of low wind resistance and earthquake resistance of the magnetic fixing method, an existing method is to add a knob lock between the display module and the box to improve the wind resistance and earthquake resistance of the magnetic fixing method, that is, a knob lock is set on the back of the display module to further fix the display module on the box, and the display module is provided with adjustment holes that pass through the opposite sides of the display module. The knob lock is adjusted by passing an adjustment tool through the adjustment hole so that the knob lock can be switched between a locked state and an unlocked state.

[0004] In the process of implementing the above-mentioned knob lock solution, the inventor discovered that the adjustment of the existing knob lock requires opening an adjustment hole on the display module. However, with the development trend of high resolution of LED display screens, the distance between adjacent lamp beads on the display modules of LED display screens is getting smaller and smaller, and the gap between the lamp beads is not enough to open the adjustment hole, so that the user cannot use the adjustment tool to pass through the display module to turn the knob lock, and cannot perform front maintenance on the display module. Summary of the invention

[0005] In order to solve the problem in the prior art that the display module cannot be front-maintained when the distance between lamp beads is small, the present invention provides a magnetic unlocking and fixing device and a display screen.

[0006] In one aspect, the present invention provides a magnetic unlocking and fixing device, comprising:

[0007] A shell, wherein a side wall of the shell is provided with an escape opening;

[0008] A linkage member, the linkage member is accommodated in the housing and can move relative to the housing;

[0009] A buckle, a part of which is accommodated in the shell, the buckle is rotatably connected to the shell, and the buckle is linked with the linkage member;

[0010] In the initial state, another part of the buckle is exposed outside the shell through the avoidance opening; when the linkage member is configured to be magnetically attracted by the magnetic attraction tool, the linkage member moves close to the magnetic attraction tool to drive the buckle to rotate, so that the buckle is retracted into the avoidance opening.

[0011] As a further optimization, the buckle includes a linkage part and a limiting part respectively located at two ends, the rotation center of the buckle is located between the linkage part and the limiting part, and the linkage part is located in the shell and fits with the outer side of the linkage part.

[0012] As a further optimization, the linkage portion is provided with a linkage inclined surface for assisting in achieving linkage with the linkage member; and / or the linkage member is provided with a linkage slope for assisting in achieving linkage with the linkage portion.

[0013] As a further optimization, the magnetic unlocking and fixing device also includes a limit piece, the limit piece includes a first guide portion and a second guide portion extending from one end of the first guide portion, the other end of the first guide portion is connected to the linkage member, the outer diameter of the first guide portion is larger than the outer diameter of the second guide portion, a limit step is formed between the first guide portion and the second guide portion, the shell includes a barrel portion and an end portion located at one end of the barrel portion, the avoidance opening is opened on the barrel portion, and a mutually communicating avoidance groove and a clamping groove are opened on the end portion, the width of the avoidance groove is larger than the outer diameter of the first guide portion, and the width of the clamping groove is larger than the outer diameter of the second guide portion and smaller than the outer diameter of the first guide portion;

[0014] In the initial state, the first guide portion is located in the avoidance groove; when the linkage member is attracted by the magnetic attraction tool and moves and rotates in the direction away from the end, the first guide portion is completely accommodated in the cylinder portion, and the limiting step abuts against the inner side of the end portion, and the second guide portion is located in the clamping groove, so that the limiting portion is stably retracted in the avoidance opening.

[0015] As a further optimization, the limiting member has a head extending from the second guiding portion, and the outer diameter of the head is greater than the width of the avoidance groove.

[0016] As a further optimization, a blocking portion extends from the limiting portion in a direction away from the linkage portion, and the blocking portion is accommodated in the barrel portion. In an initial state, the blocking portion and the inner wall of the barrel portion are in contact with each other.

[0017] As a further optimization, a limit step is provided on the linkage part. When the linkage part is in an initial state, the outer side of the limit step fits with one side of the blocking part, so that the buckle cannot be rotated and retracted; when the linkage part is moved by the magnetic attraction tool, the limit step and the blocking part are staggered to facilitate the rotation and retraction of the buckle.

[0018] As a further optimization, a linkage elastic member is also included, and the linkage elastic member is located between the linkage member and the end portion.

[0019] As a further optimization, the buckle is rotatably connected to the avoidance opening via a rotating shaft, and a torsion spring is sleeved on the rotating shaft. When the buckle is retracted into the avoidance opening, the torsion spring generates elastic deformation.

[0020] On the other hand, the present invention provides a display screen, comprising a box, a display module and a magnetic unlocking and fixing device as described above, wherein the magnetic unlocking and fixing device is installed on the back of the display module close to the box, and a mounting hole is provided on the box, and the outer shell passes through the mounting hole, and when the other part of the buckle is exposed outside the outer shell through the avoidance opening, it is fixed against the inner wall of the box.

[0021] To sum up, the present invention has the following beneficial effects: the magnetic unlocking and fixing device in the present invention has a simple and easy structure and strong adaptability, and uses a snap-on limiter to achieve fixation. The installation reliability can meet the requirements of wind resistance and earthquake resistance. The unlocking is achieved by the magnetic force of the magnetic tool, which can realize front maintenance very well, and is easy to disassemble and assemble, saving time and effort, and can very well meet various requirements of the fixing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an enlarged structural diagram of the magnetic unlocking and fixing device in the first embodiment;

[0023] Figure 2 is a partially cutaway enlarged structural schematic diagram of another portion of the buckle of the magnetic unlocking and fixing device in the first embodiment when the buckle is exposed;

[0024] Figure 3 is a partially cutaway enlarged structural schematic diagram of the magnetic unlocking and fixing device in the first embodiment when the buckle is retracted;

[0025] Figure 4 is a partially cutaway enlarged structural schematic diagram of another portion of the buckle of the magnetic unlocking and fixing device in the second embodiment when it is exposed;

[0026] Figure 5 It is a schematic diagram of the partial structure of the display screen in the third embodiment.

[0027] In the figure: 1, shell; 11, cylinder; 111, avoidance; 12, end; 121, avoidance groove; 122, holding groove; 2, linkage member; 21, linkage slope; 22, limit step; 3, buckle; 31, linkage part; 311, linkage slope; 32, limit part; 33, barrier part; 4, limit member; 41, first guide part; 42, second guide part; 43, limit step; 44, head; 5, linkage elastic member; 6, magnetic member; 7, rotating shaft; 8, torsion spring; 100, shell; 120, end; 300, buckle; 310, linkage part; 320, limit part; 500, box; 510, mounting hole; 600, display module. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Embodiment 1

[0030] This embodiment provides a magnetic unlocking and fixing device, such as Figure 1 and Figure 2 As shown, the magnetic structure fixing device includes a shell 1, a linkage member 2 and a buckle 3, and the side wall of the shell 1 is provided with an avoidance opening 111. The linkage member 2 is accommodated in the shell 1, and the linkage member 2 can move relative to the shell 1. A part of the buckle 3 is accommodated in the shell 1, and the buckle 3 is rotatably connected to the shell 1, and the buckle 3 is arranged in linkage with the linkage member 2. In the initial state, the other part of the buckle 3 is exposed outside the shell 1 through the avoidance hole to achieve limited fixation; when the linkage member 2 is configured to be magnetically attracted by the magnetic attraction tool, the linkage member 2 moves close to the magnetic attraction tool to drive the buckle 3 to rotate, so that the buckle 3 is retracted in the avoidance opening 111. The magnetic attraction unlocking fixing device in this embodiment has a simple and easy structure and strong adaptability. It uses the buckle 3 to limit the position to achieve fixation, and the installation reliability can meet the requirements of wind resistance and earthquake resistance. It uses the magnetic force of the magnetic attraction tool to achieve unlocking, which can well achieve front maintenance, and is easy to disassemble and assemble, saving time and effort, and can well meet various requirements of the fixing method.

[0031] In this embodiment, if Figure 2 and Figure 3As shown, the buckle 3 includes a linkage portion 31 and a limiting portion 32 respectively located at two ends, the rotation center of the buckle 3 is located between the linkage portion 31 and the limiting portion 32, and the linkage portion 31 is located in the housing 1 and fits the outer side of the linkage member 2. In this embodiment, the linkage portion 31 is provided with a linkage inclined surface 311, which is used to assist the linkage portion 31 and the linkage member 2 to achieve linkage; the linkage member 2 is provided with a linkage slope 21, which is used to assist the linkage member 2 and the linkage portion 31 to achieve linkage.

[0032] In this embodiment, if Figure 2 and Figure 3 As shown, the magnetic unlocking and fixing device also includes a limiter 4, which includes a first guide portion 41 and a second guide portion 42 extending from one end of the first guide portion 41, and the other end of the first guide portion 41 is connected to the linkage member 2. The outer diameter of the first guide portion 41 is greater than the outer diameter of the second guide portion 42, and a limit step 43 is formed between the first guide portion 41 and the second guide portion 42. The housing 1 includes a barrel 11 and an end portion 12 located at one end of the barrel 11, and an avoidance opening 111 is provided on the barrel 11. The end portion 12 is provided with an avoidance groove 121 and a clamping groove 122 that are interconnected, the width of the avoidance groove 121 is greater than or equal to the outer diameter of the first guide portion 41, and the width of the clamping groove 122 is greater than or equal to the outer diameter of the second guide portion 42 and less than the outer diameter of the first guide portion 41. In the initial state, the first guide portion 41 is located in the avoidance groove 121; when the linkage member 2 is attracted by the magnetic attraction tool and moves and rotates in the direction away from the end 12, the first guide portion 41 is completely accommodated in the barrel 11, and the limiting step 43 abuts against the inner side of the end 12, and the second guide portion 42 is located in the clamping groove 122, so that the limiting portion 32 is stably retracted in the avoidance opening 111. The limiting member 4 has a head 44 extending from the second guide portion 42, and the outer diameter of the head 44 is greater than the width of the avoidance groove 121. In this embodiment, the magnetic unlocking and fixing device also includes a linkage elastic member 5, which is located between the linkage member 2 and the end 12. When the linkage member 2 is magnetically attracted and moved by the magnetic attraction tool, the linkage elastic member 5 produces elastic deformation. In this embodiment, the linkage elastic member 5 is a compression spring. In this embodiment, a magnetic component 6 is provided at one end of the linkage part 2 away from the end 12 of the shell 1. The magnetic component 6 can be a magnet or an iron block to facilitate magnetic attraction with a magnetic tool. Because the magnetic component 6 is installed, the material of the linkage part 2 can be a non-magnetic material, such as aluminum or rubber.

[0033] In this embodiment, if Figure 2 and Figure 3As shown, a blocking portion 33 extends from the limiting portion 32 in a direction away from the linkage portion 31, and the blocking portion 33 is accommodated in the barrel 11. In the initial state, the blocking portion 33 abuts against the inner wall of the barrel 11. In this embodiment, the linkage member 2 is provided with a limiting step 22. When the linkage member 2 is in the initial state, the outer side of the limiting step 22 fits with one side of the blocking portion 33, so that the buckle 3 cannot be rotated and retracted; when the linkage member 2 is magnetically moved by the magnetic attraction tool, the limiting step 22 and the blocking portion 33 are staggered to facilitate the buckle 3 to be rotated and retracted. The buckle 3 is rotatably connected to the avoidance port 111 through the rotating shaft 7, and a torsion spring 8 is sleeved on the rotating shaft 7. When the buckle 3 is retracted in the avoidance port 111, the torsion spring 8 generates elastic deformation. In this embodiment, there are two buckles 3, and the two buckles 3 are symmetrically arranged. In this embodiment, the linkage portion 31 is located at one end of the buckle 3 close to the end 12 of the shell 1, and the limiting portion 32 is located at one end of the buckle 3 away from the end 12 of the shell 1. When the limiting portion 32 is exposed to the outside through the avoidance opening 111, the limiting portion 32 presses against the inner wall of another part to be fixed to achieve limitation.

[0034] Embodiment 2

[0035] The difference between this embodiment and the first embodiment is that: Figure 4 As shown, in the present embodiment, the limiting portion 320 is located at one end of the end 120 of the buckle 300 close to the housing 100, and the linkage portion 310 is located at one end of the end 120 of the buckle 300 away from the housing 100. The limiting portion 320 is hook-shaped. When the limiting portion 320 is exposed to the outside, the limiting portion 320 hooks the inner wall of another part to be fixed to achieve limiting fixation.

[0036] Embodiment 3

[0037] This embodiment provides a display screen such as Figure 5 As shown, the display screen includes a box 500, a display module 600 and the magnetic unlocking and fixing device in the first embodiment. The magnetic unlocking and fixing device is installed on the back of the display module 600 near the box 500. The box 500 is provided with a mounting hole 510. The housing 1 passes through the mounting hole 510. When the limiting portion 32 of the buckle 3 is exposed to the outside through the avoidance opening 111, it is fixed against the inner wall of the box 500. It is worth noting that the magnetic unlocking and fixing device can also be the magnetic unlocking and fixing device in the second embodiment. In addition, the magnetic unlocking and fixing device can also be used between any two parts to be fixed together.

[0038] It can be understood that the display screen of this embodiment can be an LED display screen, an LCD display screen, an OLED display screen, a QLED display screen, etc. that require a display output terminal, that is, the magnetic unlocking and fixing device in Example 1 and the magnetic unlocking and fixing device in Example 2 of the embodiments of the present invention can adapt to different types of splicing display output terminals.

[0039] The above specific embodiments are merely explanations of the present invention, and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the above embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A magnetic unlocking and fixing device, characterized in that: include: A shell, wherein a side wall of the shell is provided with an escape opening; A linkage member, the linkage member is accommodated in the housing and can move relative to the housing; A buckle, a part of which is accommodated in the shell, the buckle is rotatably connected to the shell, the buckle comprises a linkage part and a limit part respectively located at two ends, the rotation center of the buckle is located between the linkage part and the limit part, the linkage part is located in the shell and fits with the outer side of the linkage part; The magnetic unlocking and fixing device also includes a limiting member, the limiting member includes a first guide portion and a second guide portion extending from one end of the first guide portion, the other end of the first guide portion is connected to the linkage member, the outer diameter of the first guide portion is larger than the outer diameter of the second guide portion, a limiting step is formed between the first guide portion and the second guide portion, the shell includes a barrel portion and an end portion located at one end of the barrel portion, the avoidance opening is provided on the barrel portion, and a mutually communicating avoidance groove and a clamping groove are provided on the end portion, the width of the avoidance groove is larger than the outer diameter of the first guide portion, and the width of the clamping groove is larger than the outer diameter of the second guide portion and smaller than the outer diameter of the first guide portion; In the initial state, another part of the buckle is exposed outside the shell through the avoidance opening, and the first guide portion is located in the avoidance groove; when the linkage member is attracted by the magnetic attraction tool and moves and rotates in the direction away from the end, the first guide portion is completely accommodated in the cylinder portion, and the limiting step abuts against the inner side of the end, and the second guide portion is located in the holding groove, so that the limiting portion is stably retracted in the avoidance opening.

2. The magnetic unlocking and fixing device according to claim 1, characterized in that: The linkage portion is provided with a linkage inclined surface for assisting in achieving linkage with the linkage member; and / or the linkage member is provided with a linkage slope for assisting in achieving linkage with the linkage portion.

3. The magnetic unlocking and fixing device according to claim 1, characterized in that: The limiting member has a head extending from the second guiding portion, and the outer diameter of the head is greater than the width of the avoiding groove.

4. The magnetic unlocking and fixing device according to claim 1, characterized in that: A blocking portion extends from the limiting portion in a direction away from the linkage portion. The blocking portion is accommodated in the barrel portion. In an initial state, the blocking portion abuts against an inner wall of the barrel portion.

5. The magnetic unlocking and fixing device according to claim 4, characterized in that: A limit step is provided on the linkage member. When the linkage member is in an initial state, the outer side of the limit step fits with one side of the blocking part, so that the buckle cannot be rotated and retracted; when the linkage member is moved by the magnetic attraction tool, the limit step and the blocking part are staggered to facilitate the rotation and retraction of the buckle.

6. The magnetic unlocking and fixing device according to claim 1, characterized in that: It also includes a linkage elastic member, which is located between the linkage member and the end portion.

7. The magnetic unlocking and fixing device according to claim 1, characterized in that: The buckle is rotatably connected to the avoidance opening via a rotating shaft, a torsion spring is sleeved on the rotating shaft, and when the buckle is retracted into the avoidance opening, the torsion spring generates elastic deformation.

8. A display screen, characterized in that: It includes a box body, a display module and a magnetic unlocking and fixing device as described in any one of claims 1 to 7, wherein the magnetic unlocking and fixing device is installed on the back side of the display module close to the box body, and a mounting hole is opened on the box body. The shell passes through the mounting hole, and when the other part of the buckle is exposed outside the shell through the avoidance opening, it is fixed against the inner wall of the box body.

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