LED display screen pressing device

Abstract

The present application provides a LED display screen pressing device, comprising: an upper jig and a lower jig, wherein the upper jig and the lower jig contain a pre-assembled bottom shell and a PCB board. The upper jig is evenly provided with a plurality of bolt positioning holes, and the bolt positioning holes are arranged corresponding to the strip positioning holes of the bottom shell and the screw holes on the PCB board, and are used to drive the bolts from the bolt positioning holes into the bottom shell and the PCB board. Lock buckles are arranged on both sides of the lower jig, and the upper jig and the lower jig are buckled together, and the pre-assembled bottom shell and the PCB board are placed inside the upper jig and the lower jig. Due to the presence of a spacer column and a soft sleeve between the bottom shell and the PCB board, there is a certain assembly distance. In order to adjust the thickness of the bottom shell and the PCB board, the bolts are driven into the strip positioning holes of the bottom shell and the screw holes on the PCB board through the bolt positioning holes, so that the soft sleeve will produce different degrees of deformation according to the depth of the bolts driven into the bottom shell and the PCB board, thereby controlling the assembly interval of the bottom shell and the PCB board.

Description

Technical Field

[0001] The invention relates to LED display screen technology, and in particular to a LED display screen pressing device. Background Art

[0002] The existing LED (Light-Emitting Diode) display screen bottom shell and PCB board assembly are directly fixed and assembled by manual or machine bolting. In actual manufacturing, the industry standard requires that the PCB board thickness tolerance is between plus or minus 0.125, and the LED display screen bottom shell thickness tolerance is between plus or minus 0.05-0.1. However, based on this industry background and standards, if the thickness of the PCB board and the bottom shell of one LED display screen are both positive tolerances, and the thickness of the PCB thickness and the bottom shell thickness tolerance of another LED display screen are all negative tolerances, then when the two LED displays are spliced ​​together, there will be a thickness inconsistency.

[0003] The thickness difference between the two LED display screens will cause the panel heights of the two display screens to be inconsistent when the display screens are assembled, affecting the flatness of the entire module. Therefore, there is a need to improve the existing LED display screen connection machine. Summary of the invention

[0004] Based on the above technical background, the present invention provides a LED display screen pressing device, aiming to solve the technical defect of inconsistent assembly thickness of the bottom shell and PCB board of the LED display screen in the prior art.

[0005] The present invention provides a pressing device for an LED display screen, which is used for adjusting the thickness of a preassembled bottom shell and a PCB board, wherein the bottom shell is preassembled above the PCB board, and the PCB board is evenly provided with spacer columns, the middle of the spacer columns is provided with a screw hole, and the outer sleeve of the spacer column is provided with a soft sleeve, and the bottom shell is provided with a strip-shaped positioning hole corresponding to the position of the screw hole, and the pressing device comprises: an upper jig and a lower jig, and an accommodating space for accommodating the preassembled bottom shell and the PCB board is provided between the upper jig and the lower jig; a plurality of bolt positioning holes are evenly provided on the upper jig, and the distribution positions of the bolt positioning holes correspond to the positions of the strip-shaped positioning holes on the bottom shell and the screw holes in the middle of the spacer columns on the PCB board, and are used for driving bolts from the bolt positioning holes into the strip-shaped positioning holes of the bottom shell and the screw holes on the PCB board; and locking buckles are provided on both sides of the lower jig, which are used for buckling the upper jig and the lower jig together.

[0006] An optional LED display screen pressing device, wherein a positioning column is provided on the inner side of the upper jig; a lower jig positioning hole is provided on the lower jig for positioning and assembling with the positioning column of the upper jig, so that the upper jig and the lower jig are fixed together.

[0007] An optional LED display screen pressing device, wherein the accommodating space is a card slot arranged on the lower fixture, for placing the pre-assembled bottom shell and PCB board.

[0008] Optionally, in the LED display screen pressing device, the upper fixture is provided with a groove corresponding to the raised portion in the middle of the bottom shell.

[0009] An optional LED display screen pressing device, wherein a plurality of slots are provided on the bottom shell, and magnets are provided in the slots; a plurality of pressing columns are evenly provided on the inner side of the upper fixture, and the distribution positions of the pressing columns correspond to the distribution positions of the slots, and the pressing columns are attracted together with the magnets.

[0010] An optional LED display screen pressing device, wherein the positioning posts are distributed at the four corners of the upper fixture; the positioning holes of the lower fixture correspond to the positioning posts and are arranged at the four corners of the lower fixture.

[0011] An optional LED display screen pressing device, wherein the soft cover is a silicone cover.

[0012] In an optional LED display screen pressing device, the height of the silicone sleeve is greater than the height of the spacer column.

[0013] In an optional LED display screen pressing device, the height difference between the silicone sleeve and the spacer column is 1 to 2 times the sum of the standard tolerance of the bottom shell and the standard tolerance of the PCB board.

[0014] In the optional LED display screen pressing device, the spacer columns are copper columns.

[0015] The present invention provides a LED display screen pressing device, comprising: an upper jig and a lower jig, wherein a pre-assembled bottom shell and a PCB board are accommodated between the upper jig and the lower jig. A plurality of bolt positioning holes are evenly arranged on the upper jig, and the bolt positioning holes are arranged corresponding to the strip positioning holes of the bottom shell and the screw holes on the PCB board, and are used to drive the bolts from the bolt positioning holes into the bottom shell and the PCB board. Lock buckles are arranged on both sides of the lower jig, and the upper jig and the lower jig are buckled together, and the pre-assembled bottom shell and the PCB board are placed inside the upper jig and the lower jig. Since there are spacers and soft sleeves between the bottom shell and the PCB board, there is a certain assembly distance. In order to adjust the thickness of the bottom shell and the PCB board, the bolts are driven into the strip positioning holes of the bottom shell and the screw holes on the PCB board through the bolt positioning holes, so that the soft sleeve will produce different degrees of deformation according to the depth of the bolts driven into the bottom shell and the PCB board, and the height of the soft sleeve will change, so that the assembly interval of the bottom shell and the PCB board, that is, the assembly thickness of the bottom shell and the PCB board can be controlled. By using the pressing device of the present invention, the assembly thickness of the bottom shell and the PCB board can be adjusted to achieve the purpose of adjusting the assembly thickness of all bottom shells and PCB boards to be consistent, thus solving the problem of uneven assembly of display screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a LED display screen pressing device in one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of a LED display screen pressing device in one embodiment of the invention;

[0018] Figure 3 It is a schematic diagram of the structure of an upper fixture of a LED display screen pressing device in one embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the bottom shell of the LED display screen pressing device in one embodiment of the present invention.

[0020] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-4As shown, an embodiment of the present invention provides an LED display screen pressing device, which is used to adjust the thickness of a pre-assembled bottom shell 1 and a PCB board 2. The bottom shell 1 is pre-assembled above the PCB board 2, and the PCB board 2 is evenly provided with spacer columns 20, the middle of the spacer columns 20 is provided with a screw hole, and the outer cover of the spacer columns 20 is provided with a soft cover 21, and the bottom shell 1 is provided with a strip positioning hole 10 corresponding to the position of the above-mentioned screw hole. The LED display screen pressing device of the present invention specifically includes:

[0023] An upper fixture 3 and a lower fixture 4 are provided with an accommodation space between the upper fixture 3 and the lower fixture 4 for accommodating the pre-assembled bottom shell 1 and the PCB board 2 .

[0024] A plurality of bolt positioning holes 30 are evenly arranged on the upper jig 3, and the distribution positions of the bolt positioning holes 30 correspond to the positions of the strip positioning holes 10 on the bottom shell 1 and the screw holes in the middle of the spacer columns on the PCB board 2, and are used to drive bolts from the bolt positioning holes 30 into the strip positioning holes 10 of the bottom shell 1 and the screw holes on the PCB board 2.

[0025] Lock buckles 40 are provided on both sides of the lower jig 4 for buckling the upper jig 3 and the lower jig 4 together.

[0026] The upper jig 3 and the lower jig 4 are buckled together, and the pre-assembled bottom shell 1 and PCB board 2 are placed inside the upper jig 3 and the lower jig 4. Since there are spacer columns 20 and soft sleeves 21 between the bottom shell 1 and the PCB board 2, and the spacer columns 20 are arranged on the PCB board 2, there is a certain assembly distance. In order to adjust the thickness of the bottom shell 1 and the PCB board 2, the bolts are driven into the strip positioning holes 10 of the bottom shell 1 and the screw holes on the PCB board 2 through the bolt positioning holes 30. In this way, the soft sleeve 21 will be deformed according to the depth of the bolts driven into the bottom shell 1 and the PCB board 2, and the height of the soft sleeve 21 will change, so that the assembly interval of the bottom shell 1 and the PCB board 2, that is, the assembly thickness of the bottom shell 1 and the PCB board 2 can be controlled.

[0027] The bolt positioning holes 30 correspond to the positions of the strip positioning holes 10 of the bottom case 1 and the screw holes of the PCB board 2, and the inner diameter of the bolt positioning holes 30 should be set to be slightly larger than the strip positioning holes 10 of the bottom case 1 and the screw holes on the PCB board 2, so as to facilitate driving the bolts into the bottom case 1 and the PCB board 2. Multiple bolt positioning holes 30 should be provided and evenly distributed to ensure that the bolts driven into the bottom case 1 and the PCB board 2 are also evenly distributed, so as to ensure the assembly flatness of the bottom case 1 and the PCB board 2.

[0028] In an embodiment of the LED display screen pressing device, a positioning column 31 is provided on the inner side of the upper fixture 3 .

[0029] The lower jig 4 is provided with a lower jig positioning hole 41 for positioning and assembling with the positioning column 31 of the upper jig 3 , so that the upper jig 3 and the lower jig 4 are fixed together.

[0030] Among them, in a preferred embodiment, the positioning posts 31 are distributed at the four corners of the upper fixture 3;

[0031] The lower fixture positioning holes 41 correspond to the positioning posts 31 and are arranged at the four corners of the lower fixture 4 .

[0032] Since the bottom shell 1 and the PCB board 2 are rectangular in shape, the upper jig 3 and the lower jig 4 are preferably also rectangular in shape, and an accommodating space is provided between the upper jig 3 and the lower jig 4 to place the bottom shell 1 and the PCB board 2. When the thickness of the pre-assembled bottom shell 1 and the PCB board 2 is adjusted, the upper jig 3 and the lower jig 4 are fixedly assembled together by the positioning columns 31 provided at the four corners of the upper jig 3 and the lower jig positioning holes 41 provided at the four corners of the lower jig 4, so that the upper jig 3 and the lower jig 4 clamp the bottom shell 1 and the PCB board 2 inside.

[0033] In an embodiment of the LED display screen pressing device, the accommodating space is a card slot arranged on the lower fixture 4, which is used to place the pre-assembled bottom shell 1 and PCB board 2.

[0034] A slot 42 is provided on the lower fixture 4 . The shape of the slot 42 is preferably consistent with the shape of the bottom shell 1 and the PCB board 2 , and the size of the slot 42 should be set to a size that is just enough to fit into the bottom shell 1 and the PCB board 2 .

[0035] In an embodiment of the LED display screen pressing device, the upper jig 3 is provided with a groove 32 corresponding to the raised portion in the middle of the bottom shell 1. Since the bottom shell 1 of the LED display screen has a raised portion in the middle, the upper jig 3 is provided with a groove 32 at a location corresponding to the raised portion so as to accommodate the raised portion in the groove 32.

[0036] In an embodiment of the LED display screen pressing device, a plurality of clamping grooves 11 are provided on the bottom shell 1, magnets are provided in the clamping grooves 11, and a plurality of pressing columns 33 are evenly provided on the inner side of the upper fixture 3. The distribution positions of the pressing columns 33 correspond to the distribution positions of the clamping grooves 11, and the pressing columns 33 are attracted together with the magnets.

[0037] The pressure columns 33 are evenly arranged on the inner side of the upper fixture 3 , and each pressure column 33 is attracted to the magnet in the clamping groove 11 on the bottom shell 1 , so that the upper fixture 3 can apply force to the bottom shell 1 and the PCB board 2 through the pressure columns 33 to press the bottom shell 1 and the PCB board 2 together.

[0038] In an embodiment of the LED display screen lamination device, the soft cover 21 is a silicone cover.

[0039] In an embodiment of the LED display screen pressing device, the height of the silicone sleeve is greater than the height of the spacer 20. The height of the silicone sleeve is greater than the height of the spacer 20, and when the upper jig 3 and the lower jig 4 are pressed together, the assembly thickness of the bottom shell 1 and the PCB board 2 can be adjusted by the deformation of the silicone sleeve.

[0040] In an embodiment of the LED display screen pressing device, the height difference between the silicone sleeve and the spacer 20 is 1 to 2 times the sum of the standard tolerance of the bottom shell 1 and the standard tolerance of the PCB board 2.

[0041] In actual production, it is possible that the thickness of the PCB board 2 and the thickness of the bottom shell 1 are both positive tolerances, while the thickness of the PCB 2 and the thickness of the bottom shell 1 of another LED display are both negative tolerances. In order to adjust the assembly thickness of the bottom shell 1 and the PCB board 2 in this case, it is preferred to set the height difference between the silicone sleeve and the spacer 20 to be 1 to 2 times the sum of the standard tolerance of the bottom shell 1 and the standard tolerance of the PCB board 2.

[0042] In an embodiment of the LED display screen pressing device, the spacer column 20 is a metal column, and a screw hole is provided in the center of the spacer column 20. Preferably, the spacer column 20 is a copper column.

[0043] The following is an introduction to the use of the LED display screen lamination device of the present invention:

[0044] One implementation is:

[0045] S101 , inserting the PCB board 2 into the reserved slot 42 of the lower fixture 4 .

[0046] S102 , insert the silicone sleeve 21 into the copper column 20 provided on the PCB board 2 .

[0047] In this way, the silicone sleeves 21 are dispersedly distributed and fixed on the PCB boards 2 respectively.

[0048] S103 , snap the bottom shell 1 into place on the top of the PCB board 2 .

[0049] S104 , assembling the upper fixture 3 and the lower fixture 4 together and locking them with the lock 40 .

[0050] S105 , driving bolts through the bolt positioning holes 30 of the upper fixture 3 to fix the bottom shell 1 and the PCB board 2 .

[0051] Another implementation is:

[0052] S201 , insert the silicone sleeve 21 into the copper column 20 provided on the PCB board 2 .

[0053] In this way, the silicone sleeves 21 are dispersedly distributed and fixed on the PCB boards 2 respectively.

[0054] S202 , snap the bottom shell 1 into place on the top of the PCB board 2 .

[0055] S203 , inserting the pre-assembled bottom shell 1 and PCB board 2 into the slot 42 of the lower fixture 4 .

[0056] S204 , assembling the upper fixture 3 and the lower fixture 4 together and locking them with the lock 40 .

[0057] S205 , driving bolts through the bolt positioning holes 30 of the upper fixture 3 to fix the bottom shell 1 and the PCB board 2 .

[0058] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A LED display screen pressing device, used for adjusting the thickness of a pre-assembled bottom shell and a PCB board, wherein the bottom shell is pre-assembled above the PCB board, characterized in that: The PCB board is evenly provided with spacer columns, the middle of the spacer columns is provided with screw holes, and the outer cover of the spacer columns is provided with a soft cover, and the bottom shell is provided with strip-shaped positioning holes corresponding to the positions of the screw holes, and the pressing device includes: An upper jig and a lower jig, wherein an accommodation space for accommodating the pre-assembled bottom shell and the PCB board is provided between the upper jig and the lower jig; The upper jig is evenly provided with a plurality of bolt positioning holes, and the distribution positions of the bolt positioning holes correspond to the positions of the strip positioning holes on the bottom shell and the screw holes in the middle of the spacer columns on the PCB board, so as to drive the bolts from the bolt positioning holes into the strip positioning holes on the bottom shell and the screw holes on the PCB board; Lock buckles are provided on both sides of the lower jig for buckling the upper jig and the lower jig together; The bottom shell is provided with a plurality of slots, and magnets are provided in the slots; a plurality of pressure columns are evenly provided on the inner side of the upper fixture, and the distribution positions of the pressure columns correspond to the distribution positions of the slots, and the pressure columns are attracted together with the magnets; The soft cover is a silicone cover; The height of the silicone sleeve is greater than the height of the spacer column; The height difference between the silicone sleeve and the spacer column is 1 to 2 times the sum of the standard tolerance of the bottom shell and the standard tolerance of the PCB board.

2. The LED display screen lamination device according to claim 1, characterized in that: A positioning column is provided on the inner side of the upper fixture; The lower jig is provided with a lower jig positioning hole for positioning and assembling with the positioning column of the upper jig, so that the upper jig and the lower jig are fixed together.

3. The LED display screen lamination device according to claim 2, characterized in that: The accommodating space is a slot provided on the lower fixture and is used for placing the pre-assembled bottom shell and PCB board.

4. The LED display screen pressing device according to claim 3, characterized in that: The upper fixture is provided with a groove corresponding to the raised portion in the middle of the bottom shell.

5. The LED display screen lamination device according to claim 2, characterized in that: The positioning columns are distributed at the four corners of the upper fixture; The lower fixture positioning holes correspond to the positioning posts and are arranged at the four corners of the lower fixture.

6. The LED display screen lamination device according to any one of claims 1 to 4, characterized in that: The spacer columns are copper columns.

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