PCB grounding screw hole bonding pad

Abstract

The utility model discloses a PCB grounding screw hole bonding pad, which relates to the technical field of PCB welding, and adopts the technical scheme that the PCB grounding screw hole bonding pad comprises a PCB body, a plurality of threaded through holes are formed in one side of the PCB body, connecting pipes are arranged in the threaded through holes, the threaded through holes are in threaded connection with the connecting pipes, plum blossom bonding pads are welded on one side of the connecting pipes and one side of the PCB body, and the plum blossom bonding pads are welded on the other side of the PCB body. An inner pipe is connected into the connecting pipe through threads, a magnet is fixedly arranged outside the inner pipe and makes contact with the connecting pipe, a through pipe is arranged inside the inner pipe and penetrates through the inner pipe, an iron sheet is fixedly connected to one end of the through pipe, the iron sheet and the magnet are attracted, and a sliding column is fixedly arranged outside the through pipe in a sleeving mode. The beneficial effects are that through the design of the through pipe, tin is effectively prevented from entering the grounding screw hole in the welding process, so that subsequent manual processing is avoided, the arrangement of the plum-blossom-shaped bonding pad enables tin coating of the bonding pad to be more uniform, the welding quality is improved, the production cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to PCB board welding technical field, concretely relates to a PCB board ground screw hole pad. BACKGROUND

[0002] The name of circuit board has: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high frequency board, thick copper plate, impedance board, PCB, super thin circuit board, super thin circuit board, printing (copper etching technology) circuit board etc., circuit board makes circuit miniaturization, intuition, for the batch production of fixed circuit and the optimization of electric appliance layout play an important role, circuit board can be called printed wiring board or printed circuit board, PCB board is loaded into metal shell, bottom ground screw hole pad is designed to be whole circle on tin pad for good contact with metal shell screw column top.

[0003] When the existing PCB board passes the wave peak welding, the ground screw hole is blocked by tin or the tin on the peripheral circular pad of the ground screw hole is uneven, which causes that the PCB board cannot lock the screw and the high-low uneven after the PCB board locks the screw, and the manufacturer can only arrange personnel to use the soldering iron to weld the screw hole blocked by tin after the wave peak welding, and the screw hole pad with uneven tin is welded flat by the soldering iron, so that the labor and cost are increased. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a PCB board ground screw hole pad to solve the problems that the ground screw hole is blocked by tin or the tin on the peripheral circular pad of the ground screw hole is uneven when the PCB board passes the wave peak welding, which causes that the PCB board cannot lock the screw and the high-low uneven after the PCB board locks the screw, and the manufacturer can only arrange personnel to use the soldering iron to weld the screw hole blocked by tin after the wave peak welding, and the screw hole pad with uneven tin is welded flat by the soldering iron, so that the labor and cost are increased.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a PCB board ground screw hole pad, including PCB board body, the one side of PCB board body is equipped with a plurality of threaded through holes, the threaded through hole is equipped with the connecting pipe in, the threaded through hole is connected with connecting pipe through screw thread, the connecting pipe and the one side of PCB board body are welded with plum blossom pad.

[0006] Preferably, the connecting pipe is internally connected with an inner tube by screw thread, the outer portion of the inner tube is fixedly provided with a magnet, and the magnet is in contact with the connecting pipe.

[0007] Preferably, the inner tube is internally provided with a through pipe, the through pipe penetrates the inner tube, one end of the through pipe is fixedly connected with an iron sheet, and the iron sheet is adsorbed to the magnet.

[0008] Preferably, the through pipe is provided with a sliding column.

[0009] Preferably, the inner wall of the inner pipe is provided with a long vertical groove, a horizontal groove and a short vertical groove, and the long vertical groove, the horizontal groove and the short vertical groove are connected.

[0010] Preferably, the protrusions on the star-shaped soldering pad are circular or shaped.

[0011] Preferably, the through pipe slides in the inner pipe.

[0012] The embodiment of the utility model has the following advantages:

[0013] The through pipe effectively prevents tin from entering the inside of the grounding screw hole in the welding process, thereby avoiding subsequent manual processing, the star-shaped soldering pad is arranged to make the tin on the soldering pad more uniform, thereby improving the welding quality, reducing the production cost and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0015] The structure, proportion, size and the like shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions of the embodiments of the utility model, so they do not have technical substantive significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that the utility model can produce, should still fall within the scope of the technical content disclosed by the utility model.

[0016] Figure 1 The overall structure top view provided by the utility model;

[0017] Figure 2 The overall structure bottom view provided by the utility model;

[0018] Figure 3 The PCB body perspective view provided by the utility model;

[0019] Figure 4 The through pipe perspective view provided by the utility model;

[0020] Figure 5 The through pipe sectional view provided by the utility model;

[0021] Figure 6 The utility model provides a sectional view of connecting pipe

[0022] Figure 7 The utility model provides a sectional view of connecting pipe Figure 1 The structure of A in the utility model is enlarged.

[0023] In the drawing: 1, PCB board body; 2, iron sheet; 3, threaded hole; 4, magnet; 5, connecting pipe; 6, inner pipe; 7, long vertical groove; 8, through pipe; 9, sliding column; 10, horizontal groove; 11, short vertical groove; 12, plum-blossom pad. Specific embodiments

[0024] The following specific embodiments illustrate the embodiments of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Refer to the attached Figure 1 - attached Figure 7 The utility model provides a kind of PCB board ground screw hole pad, including PCB board body 1, the PCB board body 1 one side is equipped with multiple threaded holes 3, the threaded hole 3 inside is equipped with connecting pipe 5, the threaded hole 3 is connected with connecting pipe 5 by screw thread, the connecting pipe 5 and PCB board body 1 one side are welded with plum-blossom pad 12, the boss shape on the plum-blossom pad 12 can be circular and special shape;

[0026] In the embodiment, connecting pipe 5 is rotated and screwed into the inside of threaded hole 3, then plum-blossom pad 12 is welded on PCB board body 1 and connecting pipe 5, so that connecting pipe 5 and PCB board body 1 are fixed;

[0027] For the purpose of convenient installation, the device adopts the following technical scheme: the inner pipe 6 is screwed in the connecting pipe 5, the magnet 4 is fixed outside the inner pipe 6, the magnet 4 is in contact with the connecting pipe 5, the inner pipe 6 is provided with a through pipe 8, the through pipe 8 penetrates the inner pipe 6, one end of the through pipe 8 is fixedly connected with the iron sheet 2, the iron sheet 2 is adsorbed with the magnet 4, the through pipe 8 is fixedly sleeved with the slide column 9 outside, the inner wall of the inner pipe 6 is respectively provided with a long vertical groove 7, a horizontal groove 10 and a short vertical groove 11, the long vertical groove 7, the horizontal groove 10 and the short vertical groove 11 are connected, the through pipe 8 slides in the inner pipe 6, first, the inner pipe 6 is screwed with the connecting pipe 5, until the magnet 4 is in close contact with the connecting pipe 5, then the slide column 9 on the outer surface of the through pipe 8 is in the position of the long vertical groove 7, at this time, the through pipe 8 is rotated in reverse, the through pipe 8 is buckled with the long vertical groove 7 through the slide column 9, so that the through pipe 8 drives the inner pipe 6 to rotate, because the magnet 4 at the bottom of the inner pipe 6 has contacted and locked with the connecting pipe 5, the rotation of the inner pipe 6 drives the connecting pipe 5 to rotate, the connecting pipe 5 is screwed into the threaded hole 3, the through pipe 8 drives the iron sheet 2 to move, the slide column 9 moves out of the long vertical groove 7, and the iron sheet 2 at the bottom of the through pipe 8 is adsorbed with the magnet 4, so that when the star-shaped soldering pad 12 is welded on the surface of the PCB body 1 and the connecting pipe 5, the protrusion of the through pipe 8 blocks the through hole, avoiding the hole being blocked by soldering tin, then the through pipe 8 is pushed down again, the iron sheet 2 at the bottom of the through pipe 8 is separated from the adsorption of the magnet 4, the slide column 9 penetrates the long vertical groove 7 and slides into the horizontal groove 10, then the through pipe 8 is rotated, the through pipe 8 drives the slide column 9 to rotate, the slide column 9 rotates to one side of the short vertical groove 11 in the horizontal groove 10, then the iron sheet 2 at the bottom of the PCB body 1 is contacted with the metal shell screw column, then it is pressed down, so that the slide column 9 is pushed into the short vertical groove 11 again, the limiting of the through pipe 8 is completed, the screw penetrates the through pipe 8 and is screwed and fixed with the metal shell screw column, the through pipe 8 is higher than the star-shaped soldering pad 12, avoiding the unevenness after the PCB is locked by the screw, and there is a gap between the PCB body 1 and the metal shell, which is convenient for heat dissipation of the PCB body 1.

[0028] The use process of the utility model is as follows: when using the utility model, first, the inner tube 6 is rotated and tightened with the connecting pipe 5 until the magnet 4 is in close contact with the connecting pipe 5, then the slide post 9 on the outer surface of the through pipe 8 is in the position of the long vertical groove 7, at this time, the through pipe 8 is rotated reversely, the through pipe 8 is buckled with the long vertical groove 7 through the slide post 9, the through pipe 8 drives the inner tube 6 to rotate, because the magnet 4 at the bottom of the inner tube 6 has contacted and locked with the connecting pipe 5, the rotation of the inner tube 6 drives the connecting pipe 5 to rotate, the connecting pipe 5 is rotated and screwed into the inside of the threaded through hole 3, the through pipe 8 is pulled, the through pipe 8 drives the iron sheet 2 to move, the slide post 9 moves out of the long vertical groove 7, and the iron sheet 2 at the bottom of the through pipe 8 is adsorbed with the magnet 4, when the plum-blossom soldering pad 12 is welded on the surface of the PCB plate body 1 and the connecting pipe 5, the convex of the through pipe 8 blocks the through hole, avoiding the hole being blocked by soldering tin, then the through pipe 8 is pushed down again, the iron sheet 2 at the bottom of the through pipe 8 is separated from the adsorption of the magnet 4, the slide post 9 passes through the long vertical groove 7 and slides into the inside of the horizontal groove 10, then the through pipe 8 is rotated, the through pipe 8 drives the slide post 9 to rotate, the slide post 9 is rotated to one side of the short vertical groove 11 in the horizontal groove 10, then the iron sheet 2 at the bottom of the PCB plate body 1 is contacted with the metal shell screw post, then it is pressed down, the slide post 9 is pushed into the inside of the short vertical groove 11 again, the limiting of the through pipe 8 is completed, the screw passes through the through pipe 8 and is tightened and fixed with the metal shell screw post, the through pipe 8 is higher than the plum-blossom soldering pad 12, avoiding the unevenness after the PCB plate is locked with the screw, and there is a gap between the PCB plate body 1 and the metal shell, facilitating the heat dissipation of the PCB plate body 1.

[0029] The above is only the preferred embodiment of the utility model, any skilled person in the art can modify the utility model by using the above-mentioned technical solutions or modify it into equivalent technical solutions. Therefore, any simple modification or equivalent replacement according to the technical solutions of the utility model is within the scope of protection of the utility model.

Claims

1. A PCB board ground screw hole pad, comprising a PCB board body (1), characterized in that: The PCB plate body (1) is provided with a plurality of threaded holes (3) on one side, the threaded holes (3) are provided with connecting pipes (5) inside, the threaded holes (3) and the connecting pipes (5) are connected through threads, and the connecting pipes (5) and the PCB plate body (1) are welded with plum pads (12) on one side.

2. The PCB ground screw hole pad of claim 1, wherein: The connecting pipes (5) are provided with inner pipes (6) inside through threads, the inner pipes (6) are fixedly provided with magnets (4) outside, and the magnets (4) are in contact with the connecting pipes (5).

3. The PCB ground screw hole pad of claim 2, wherein: The inner pipes (6) are provided with through pipes (8) inside, the through pipes (8) penetrate the inner pipes (6), one end of the through pipes (8) is fixedly connected with iron sheets (2), and the iron sheets (2) are adsorbed to the magnets (4).

4. The PCB ground screw hole pad of claim 3, wherein: The through pipes (8) are fixedly provided with sliding columns (9) outside.

5. The PCB ground screw hole pad of claim 2, wherein: Long vertical grooves (7), horizontal grooves (10) and short vertical grooves (11) are respectively formed in the inner walls of the inner pipes (6), and the long vertical grooves (7), the horizontal grooves (10) and the short vertical grooves (11) are communicated.

6. The PCB ground screw hole pad of claim 1, wherein: The shapes of the convex blocks on the plum pads (12) can be circular and special-shaped.

7. The PCB ground screw hole pad of claim 3, wherein: The through pipes (8) slide in the inner pipes (6).

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