Jig for locking shielding sheet screw

Abstract

The utility model discloses a jig for locking a shielding sheet screw, and relates to the technical field of shielding sheet assembling jigs, the jig for locking the shielding sheet screw is used for assembling a PCB and a shielding sheet, the jig for locking the shielding sheet screw comprises a lower support and an upper support, and the upper support is provided with a screw through hole for the screw to pass through; a clamping space used for clamping a PCB and a shielding sheet is formed between the lower support and the upper support. A first attraction piece is arranged on the lower support, a second attraction piece is arranged on the upper support, and the first attraction piece and the second attraction piece attract each other through magnetism.

Description

Technical Field

[0001] This utility model relates to the field of shielding sheet assembly fixture technology, and in particular to a fixture for locking shielding sheet screws. Background Technology

[0002] In some communication and microwave equipment, the high-frequency signals of these devices are easily interfered with or cause interference to the outside world. Therefore, shielding sheets are usually installed on the PCB boards of these devices. The shielding sheets can block the interference of external electromagnetic waves to sensitive components inside the circuit board, thereby ensuring the normal operation of the equipment, or preventing electromagnetic waves generated inside the circuit board from radiating outward, avoiding interference with other equipment or circuits, and also protecting the components on the PCB board.

[0003] The shielding sheet needs to be connected to the grounding circuit on the PCB board to form a complete shielding path. In related technologies, for the purpose of facilitating maintenance, conductive springs are set on the PCB board and elastically connected to the shielding sheet to realize the connection between the shielding sheet and the grounding circuit.

[0004] The problem is that during the installation of the shielding sheet, the shielding sheet is lifted up by the conductive spring, causing the screw holes on the shielding sheet to not align with the screw holes on the PCB board. This is especially problematic when assembling the shielding sheet and the PCB board using automated machinery, as the screws cannot accurately enter the screw holes on the shielding sheet and the PCB board, resulting in the failure of the shielding sheet to be properly attached to the PCB board. Utility Model Content

[0005] The main purpose of this utility model is to provide a fixture for locking the screws of the shielding sheet, which aims to solve the problem that the shielding sheet will be pushed up by the conductive spring on the PCB board, causing the shielding sheet to fail to be locked to the PCB board.

[0006] To achieve the above objectives, the present invention proposes a fixture for locking shielding screws, used for assembling PCB boards and shielding sheets. The fixture for locking shielding screws includes a lower support and an upper support. The upper support has a screw through hole for the screw to pass through. A clamping space for clamping the PCB board and the shielding sheet is formed between the lower support and the upper support. The lower support has a first attraction member, and the upper support has a second attraction member. The first attraction member and the second attraction member attract each other magnetically. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0008] Figure 1 A schematic diagram of an embodiment of the fixture for locking shield screws provided by this utility model;

[0009] Figure 2 for Figure 1 An exploded view of the fixture for the central locking shield screw;

[0010] Figure 3 for Figure 1 A schematic diagram of the structure of the fixture for the central locking shield screw, hidden behind the upper bracket;

[0011] Figure 4 for Figure 2 Schematic diagram of the middle and lower support structure;

[0012] Figure 5 for Figure 2 Schematic diagram of the PCB support structure;

[0013] Figure 6 for Figure 2 Schematic diagram of the structure of the shielding sheet;

[0014] Figure 7 for Figure 2 Schematic diagram of the upper and middle support structure.

[0015] Explanation of icon numbers:

[0016] 100. Fixture for tightening the screws on the shielding plate; 100a. Clamping space;

[0017] 1. Lower bracket; 1a. First mounting groove; 11. First suction element; 12. First positioning post; 13. Second positioning post; 14. Limiting element;

[0018] 2. Upper bracket; 2a. Screw through hole; 2b. First positioning hole; 2c. Second positioning hole; 2d. Through hole; 2f. Adsorption area; 21. Second suction element; 22. Elastic pressure block;

[0019] 3. PCB bracket; 3a. Opening; 31. Positioning protrusion;

[0020] 210, Shielding sheet; 210a, Fourth positioning hole; 220, PCB board; 220a, Third positioning hole; 221, Conductive spring;

[0021] 310. Shielding nozzle; 320. Upper support nozzle.

[0022] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] This utility model proposes a fixture 100 for locking the screws of the shielding sheet, which is used to assemble the PCB board 220 and the shielding sheet 210.

[0027] Please see Figures 1 to 3 In one embodiment of this utility model, the fixture 100 for locking the shielding plate screw includes a lower bracket 1 and an upper bracket 2. The upper bracket 2 is provided with a screw through hole 2a for the screw to pass through. A clamping space 100a for clamping the PCB board 220 and the shielding plate 210 is formed between the lower bracket 1 and the upper bracket 2. The lower bracket 1 is provided with a first attraction member 11 and the upper bracket 2 is provided with a second attraction member 21. The first attraction member 11 and the second attraction member 21 are attracted to each other by magnetism.

[0028] In this embodiment, when the shielding sheet 210 is installed on the PCB board 220, the PCB board 220 and the shielding sheet 210 are first placed on the lower support 1, with the shielding sheet 210 located on the side of the PCB board 220 facing away from the lower support 1. Then, the upper support 2 is placed on the shielding sheet 210, and the first attraction member 11 and the second attraction member 21 are aligned. Under the mutual attraction of the first attraction member 11 and the second attraction member 21, the upper support 2 and the lower support 1 move closer to each other and squeeze the shielding sheet 210 and the PCB board 220 to compress the conductive spring sheet 221 on the PCB board 220. During this process, the screw holes on the shielding sheet 210 gradually align with the screw holes on the PCB board 220. At this time, the screws are sequentially inserted into the aligned screw holes on the shielding sheet 210 and the PCB board 220 through the screw through hole 2a on the upper support 2, and the screws are turned to lock the shielding sheet 210 and the PCB board 220, thereby realizing the assembly of the shielding sheet 210 and the PCB board 220.

[0029] Specifically, the upper bracket 2 and the lower bracket 1 are plate-shaped and square. A first attraction member 11 is located at each of the four corners of the side of the lower bracket 1 facing the upper bracket 2, and a second attraction member 21 is located at each of the four corners of the side of the upper bracket 2 facing the lower bracket 1. Each first attraction member 11 corresponds to a second attraction member 21 and they attract each other, providing an attraction force that brings the upper bracket 2 closer to the lower bracket 1. This allows the upper bracket 2 and the lower bracket 1 to come closer together to clamp the shielding sheet 210 and the PCB board 220. The first attraction member 11 and the second attraction member 21 can be glued to the lower bracket 1 and the upper bracket 2 respectively, or they can be secured by a snap-fit ​​structure on the upper bracket 2 or the lower bracket 1.

[0030] This embodiment provides a first attraction member 11 on the upper bracket 2 and a second attraction member 21 on the lower bracket 1 that attracts the first attraction member 11. The attraction between the first attraction member 11 and the second attraction member 21 compresses the wire spring, gradually aligning the screw holes on the shielding sheet 210 with the screw holes on the PCB board 220. This overcomes the problem of the shielding sheet 210 being lifted by the conductive spring 221, causing the screw holes on the shielding sheet 210 to misalign with the screw holes on the PCB board 220. This facilitates integration into automated assembly equipment for the shielding sheet 210 and the PCB board 220, increasing the success rate of automated machinery fastening the shielding sheet 210 and the PCB board 220 with screws. Furthermore, since the first attraction member 11 and the second attraction member 21 attract each other magnetically, the assembly and disassembly of the upper bracket 2 and the lower bracket 1 are very quick and convenient, requiring minimal complex operations, thus improving the efficiency of assembling the shielding sheet 210, the PCB board 220, and the fixture.

[0031] Further, please refer to Figures 1 to 3In one embodiment of the present invention, one of the first attracting member 11 and the second attracting member 21 is a magnet, and the other is a substance that can be attracted by a magnet; or, both the first attracting member 11 and the second attracting member 21 are magnets.

[0032] In this embodiment, two configuration schemes for the first suction member 11 and the second suction member 21 are provided.

[0033] In the first embodiment, of the first attracting element 11 and the second attracting element 21, one is configured as a magnet capable of generating a magnetic field, while the other is a material that does not generate a magnetic field but can be attracted by one. Understandably, the magnet can be a permanent magnet made of rare-earth materials such as neodymium iron boron or alloy materials, or an electromagnet that generates a magnetic field using a circuit such as a solenoid. In this first embodiment, since one of the first attracting element 11 and the second attracting element 21 can generate a magnetic field while the other does not, it is not necessary to reverse the magnetic poles of the first attracting element 11 and the second attracting element 21 when producing the jig 100 for the locking shield screw, simplifying the production process and improving production efficiency.

[0034] In the second scheme, both the first attracting element 11 and the second attracting element 21 are magnets. To ensure that the first attracting element 11 and the second attracting element 21 attract each other, their magnetic poles are set to opposite directions. At this time, due to the superposition of their magnetic fields, a stronger attraction force can be provided to overcome the elasticity of the conductive spring 221 and press down the shield 210 that is pushed up by the conductive spring 221. Furthermore, since the magnetic attraction force between the upper bracket 2 and the lower bracket 1 is stronger, it is not easy to separate due to accidental contact by screwdrivers or other tools inserted into the fixture when tightening the screw, thus ensuring the normal progress of the screw tightening process.

[0035] Further, please refer to Figure 2 , Figure 3 and Figure 7 In one embodiment of this utility model, the first attracting member 11 is a magnet, the second attracting member 21 and the upper support 2 are integrally formed, and the upper support 2 and the second attracting member 21 are materials that can be attracted by a magnet.

[0036] In this embodiment, the second attracting member 21 and the upper support 2 are integrally formed. The second attracting member 21 is a protrusion formed on the upper support 2 facing the lower support 1. The lower support 1 also has a protrusion extending upward to the upper support 2, and a magnet is provided on the protrusion. The second attracting member 21 and the upper support 2 can be made of materials that can be attracted by magnets, such as iron or steel, for example, integrally forged or cast from steel. Since the second attracting member 21 and the upper support 2 are integrally formed, the alignment accuracy requirements for the first attracting member 11 and the second attracting member 21 are reduced when assembling the shielding plate 210, the PCB board 220, and the fixture 100 for locking the shielding plate screws, making the assembly operation easier. Furthermore, due to the improved integrity of the second attracting member 21 and the upper support 2, the force is more uniform when subjected to magnetic attraction.

[0037] Further, please refer to Figure 2 and Figure 4 In one embodiment of the present invention, the lower bracket 1 is provided with a first mounting groove 1a on the side facing the upper bracket 2, and the first suction member 11 is engaged with the inner wall of the first mounting groove 1a; and / or, the upper bracket 2 is provided with a second mounting groove on the side facing the lower bracket 1, and the second suction member 21 is engaged with the inner wall of the second mounting groove.

[0038] In this embodiment, the first suction member 11 is bonded to the lower support 1, and the second suction member 21 is bonded to the upper support 2. Taking the first suction member 11 and the lower support 1 as an example, in order to prevent the first suction member 11 from falling off due to bumps during the assembly process, the periphery of the first suction member 11 is clamped and limited. Specifically, a first mounting groove 1a adapted to the shape of the first suction member 11 is provided on the lower support 1. The first suction member 11 extends into the first mounting groove 1a and is bonded to the bottom wall of the first mounting groove 1a. The outer side wall of the first suction member 11 is clamped to the inner side wall of the first mounting groove 1a. In this way, the periphery of the first suction member 11 can be limited and resisted by impact forces such as bumps, preventing the first suction member 11 from falling off. The second suction member 21 is similarly designed and can be set with reference to the first suction member 11, so it will not be described in detail.

[0039] Further, please refer to Figures 2 to 4 In one embodiment of the present invention, a first positioning part is formed on the lower bracket 1 and a second positioning part is formed on the upper bracket 2. The first positioning part and the second positioning part are inserted into each other. One of the first positioning part and the second positioning part is a positioning post, and the other is a positioning hole adapted to the positioning post.

[0040] In this embodiment, the shielding sheet 210 and the PCB board 220 are disposed in the reserved space of the lower bracket 1. The upper bracket 2 is provided with screw through holes 2a. To ensure that the screw through holes 2a are accurately aligned with the screw holes on the shielding sheet 210 and the PCB board 220 after assembly, a first positioning part is provided on the lower bracket 1, and a second positioning part adapted to the first positioning part is provided on the upper bracket 2. For example, a positioning hole is provided on the upper bracket 2, and a positioning post is provided on the side of the lower bracket 1 facing the upper bracket 2. The positioning post is inserted into the positioning hole. It is understood that the positions of the positioning post and the positioning hole can be interchanged without affecting the positioning function. That is, a positioning hole can be provided on the lower bracket 1, and a positioning post can be provided on the upper bracket 2. The shape of the positioning post and the positioning hole can be set to square, circular, or other shapes. This embodiment does not impose any restrictions. It should be noted that when the shape of the positioning post and the positioning hole is circular, at least two positioning posts need to be provided to prevent the positioning post from rotating relative to the upper bracket 2. In this embodiment, the insertion of the positioning pin and the positioning hole ensures that the screw through hole 2a is accurately aligned with the screw holes on the shielding plate 210 and the PCB board 220 after assembly.

[0041] Furthermore, please refer to Figures 2 to 4 In one embodiment of the present invention, a first positioning post 12 and a second positioning post 13 are formed on the lower bracket 1, and a first positioning hole 2b and a second positioning hole 2c are formed on the upper bracket 2. The first positioning post 12 is inserted into the inner wall of the first positioning hole 2b, and the second positioning post 13 is inserted into the inner wall of the second positioning hole 2c. The outer diameter of the first positioning post 12 is larger than the outer diameter of the second positioning post 13, and the inner diameter of the first positioning hole 2b is larger than the inner diameter of the second positioning hole 2c.

[0042] In this embodiment, at least two positioning posts with different outer diameters are provided on the lower bracket 1, namely the first positioning post 12 and the second positioning post 13. The outer diameter of the first positioning post 12 is larger than that of the second positioning post 13. At the corresponding position on the upper bracket 2, two positioning holes with different inner diameters are provided, namely the first positioning hole 2b and the second positioning hole 2c. The inner diameter of the first positioning hole 2b is larger than that of the second positioning hole 2c. This provides a foolproof design. For example, when the centers of the first positioning hole 2b and the second positioning hole 2c are symmetrically positioned on the upper bracket 2, that is, when the upper bracket 2 is flipped upside down and the positions of the first positioning hole 2b and the second positioning hole 2c are exactly interchanged, the first positioning post 12 is prevented from being inserted into the second positioning hole 2c. This allows for timely detection of the upper bracket 2's flipping and prompt adjustment of the upper bracket 2.

[0043] Further, please refer to Figure 2 and Figure 5In one embodiment of this utility model, the fixture 100 for locking the shielding screws also includes a PCB bracket 3. The PCB bracket 3 is located on the side of the lower bracket 1 facing the upper bracket 2. The side of the PCB bracket 3 facing away from the lower bracket 1 has an opening 3a and abuts against the PCB board 220.

[0044] In this embodiment, to prevent the PCB board 220 and the lower bracket 1 from sticking together too tightly due to their smooth surfaces and becoming difficult to remove, a PCB bracket 3 is provided on the side of the lower bracket 1 facing the upper bracket 2, and an opening 3a is provided on the side of the PCB bracket 3 facing away from the lower bracket 1. During assembly, air will enter the opening 3a to form air pressure. Even when the upper bracket 2 and the lower bracket 1 are close to each other and the PCB board 220 and the PCB bracket 3 are pressed together, the air pressure formed in the opening 3a will cause the PCB board 220 to tend to be pushed away from the PCBA bracket after the upper bracket 2 is removed, as the squeezing force is removed. This prevents the PCB board 220 and the lower bracket 1 from sticking together too tightly due to their smooth surfaces and becoming difficult to remove.

[0045] Further, please refer to Figures 2 to 4 In one embodiment of this utility model, a plurality of limiting members 14 are provided on the side of the lower bracket 1 facing the upper bracket 2. The plurality of limiting members 14 are arranged around the PCB bracket 3 and are engaged with the side wall of the PCB bracket 3; and / or, a positioning protrusion 31 is provided on the side of the PCB bracket 3 facing away from the lower bracket 1. The PCB board 220 is provided with a third positioning hole 220a, and the shielding sheet 210 is provided with a fourth positioning hole 210a. The positioning protrusion 31 passes through the third positioning hole 220a and the fourth positioning hole 210a in sequence.

[0046] In this embodiment, to achieve the positioning of the PCB board 220 on the lower bracket 1 and ensure accurate alignment of the screw through-hole 2a with the screw holes on the shielding plate 210 and the PCB board 220 after assembly, a plurality of limiting members 14 are provided on the side of the lower bracket 1 facing the upper bracket 2. The limiting members 14 can be block-shaped and integrally formed with the lower bracket 1 by forging or casting. The plurality of limiting members 14 are arranged around the outer periphery of the PCB bracket 3, and the sidewall of each limiting member 14 is engaged with the sidewall of the PCB bracket 3, thereby achieving the positioning of the PCB board 220 on the lower bracket 1. Furthermore, after positioning, the PCB bracket 3 can be bonded to the lower bracket 1 to enhance the installation firmness of the PCB bracket 3.

[0047] In addition, to achieve the positioning of the shielding sheet 210 and the PCB board 220 on the PCB bracket 3, and to further ensure accurate alignment of the screw through holes 2a with the screw holes on the shielding sheet 210 and the PCB board 220 after assembly, a positioning protrusion 31 is provided on the side of the PCB bracket 3 facing away from the support 1. The PCB board 220 is provided with a third positioning hole 220a, and the shielding sheet 210 is provided with a fourth positioning hole 210a. The positioning protrusion 31 passes through the third positioning hole 220a and the fourth positioning hole 210a in sequence. The shape of the positioning protrusion 31 can be square or circular, etc. Correspondingly, the shapes of the third positioning hole 220a and the fourth positioning hole 210a match the shape of the positioning protrusion 31 to ensure that the positioning protrusion 31 can be inserted into the third positioning hole 220a and the fourth positioning hole 210a. It should be noted that when the positioning protrusion 31 is circular, at least two circular positioning protrusions 31 need to be provided on the PCB bracket 3 to prevent the shielding sheet 210 or the PCB board 220 from rotating.

[0048] Further, please refer to Figure 2 , Figure 3 and Figure 7 In one embodiment of the present invention, an elastic pressure block 22 is detachably provided on the side of the upper bracket 2 facing the lower bracket 1, and the elastic pressure block 22 elastically abuts against the shielding sheet 210.

[0049] In this embodiment, to prevent the shielding sheet 210 from being scratched or otherwise damaged by hard contact, an elastic pressure block 22 is provided on the side of the upper bracket 2 facing the lower bracket 1. The elastic pressure block 22 can be made of elastic materials such as silicone or rubber. Optionally, a slot can be provided on the upper bracket 2 to engage the elastic block with the slot. Preferably, the elastic pressure block 22 can be fixed to the upper bracket 2 with screws, so that the connection between the elastic pressure block 22 and the upper bracket 2 is firm and reliable, and it is not easy to fall off during long-term use. The elastic block can be pre-assembled with the upper bracket 2 before the fixture is assembled, which improves the assembly efficiency of the fixture.

[0050] Further, please refer to Figure 1 and Figure 2 In one embodiment of the present invention, the upper support 2 is also provided with a through hole 2d communicating with the clamping space 100a. The through hole 2d is correspondingly provided with the shielding sheet 210. The upper support 2 is also provided with an adsorption area 2f.

[0051] In this embodiment, the automated production equipment can assemble the upper support 2 and the shielding sheet 210 by using a suction nozzle. The design of the suction nozzle can refer to existing technologies such as vacuum negative pressure suction nozzles, which will not be elaborated in this embodiment. In order to integrate the fixture into the automated production equipment, a through hole 2d communicating with the clamping space 100a is provided on the upper support 2. The through hole 2d is used for the shielding sheet suction nozzle 310 to pass through and suck up the shielding sheet 210. Therefore, the shape and inner diameter of the through hole 2d can be flexibly set according to the specific shape of the suction nozzle, which is not limited in this embodiment. A smooth, flat adsorption area 2f is provided on the side of the upper support 2 facing away from the lower support 1. The adsorption area 2f is used for adsorption by the upper support nozzle 320. During material handling and assembly, the upper support nozzle 320 and the shielding sheet nozzle 310 move simultaneously. After the upper support nozzle 320 finishes picking up the upper support 2, the shielding sheet nozzle 310 passes through the through hole 2d on the upper support 2 and moves to the shielding sheet 210 loading area to pick up the shielding sheet 210. Then, the upper support 2 and the shielding sheet 210 are assembled onto the PCB board 220 and the lower support 1 simultaneously. Because the shielding sheet 210 and the upper support 2 move and assemble simultaneously, the step of assembling and aligning the shielding sheet 210 separately is saved, improving assembly efficiency.

[0052] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A jig for locking a shielding sheet screw for assembling a PCB board and a shielding sheet, characterized by, The fixture for locking the shielding plate screw includes a lower bracket and an upper bracket, and the upper bracket is provided with a screw through hole for the screw to pass through; A clamping space for clamping the PCB board and the shielding sheet is formed between the lower bracket and the upper bracket; The lower support is provided with a first attraction element, and the upper support is provided with a second attraction element. The first attraction element and the second attraction element attract each other magnetically.

2. The tool for locking shielding sheet screws according to claim 1, wherein Of the first attracting element and the second attracting element, one is a magnet, and the other is a material that can be attracted by a magnet; Alternatively, both the first and second attracting elements may be magnets.

3. The tool for locking shielding screws according to claim 2, wherein The first attracting element is a magnet, the second attracting element and the upper support are integrally formed, and the upper support and the second attracting element are made of materials that can be attracted by a magnet.

4. The tool for locking shielding screws according to claim 2, wherein The lower bracket has a first mounting groove on the side facing the upper bracket, and the first suction member engages with the inner wall of the first mounting groove. And / or, the upper bracket has a second mounting groove on the side facing the lower bracket, and the second suction member engages with the inner wall of the second mounting groove.

5. The tool for locking shielding screws according to claim 1, wherein A first positioning part is formed on the lower bracket, and a second positioning part is formed on the upper bracket, wherein the first positioning part and the second positioning part are inserted into each other. Of the first positioning part and the second positioning part, one is a positioning post, and the other is a positioning hole adapted to the positioning post.

6. The tool for locking shielding screws according to claim 5, wherein The lower support has a first positioning post and a second positioning post, and the upper support has a first positioning hole and a second positioning hole. The first positioning post is inserted into the inner wall of the first positioning hole, and the second positioning post is inserted into the inner wall of the second positioning hole. Wherein, the outer diameter of the first positioning post is greater than the outer diameter of the second positioning post, and the inner diameter of the first positioning hole is greater than the inner diameter of the second positioning hole.

7. The tool for locking shielding screws according to claim 1, wherein The fixture for locking the shielding plate screws also includes a PCB bracket, which is located on the side of the lower bracket facing the upper bracket. The side of the PCB bracket facing away from the lower bracket has an opening and abuts against the PCB board.

8. The tool for locking shielding screws according to claim 7, wherein The lower support is provided with a plurality of limiting members on the side facing the upper support, and the plurality of limiting members are arranged around the PCB support and engaged with the side wall of the PCB support. And / or, the PCB bracket has a positioning protrusion on the side facing away from the lower bracket, the PCB board has a third positioning hole, the shielding sheet has a fourth positioning hole, and the positioning protrusion passes through the third positioning hole and the fourth positioning hole in sequence.

9. The tool for locking shielding screws according to claim 1, wherein The upper support is detachably provided with an elastic pressure block on the side facing the lower support, and the elastic pressure block elastically abuts against the shielding sheet.

10. The tool for locking shielding screws according to claim 1, wherein The upper support is also provided with a through hole communicating with the clamping space, the through hole being correspondingly provided with the shielding sheet, and the upper support is also provided with an adsorption area.

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