CN209462694U - A kind of microphone pcb board of antistatic - Google Patents

Abstract

The utility model discloses a kind of microphone pcb boards of antistatic, including copper foil conductive layer, heat conduction silicone and insulating substrate, the bottom of the copper foil conductive layer is coated with heat conduction silicone, the bottom pressing of the heat conduction silicone has and insulating substrate, microphone transmitter circuit is etched on the copper foil conductive layer, positive solder joint and cathode solder joint are equipped at the top of copper foil conductive layer, positive solder joint is respectively used to be connected with the positive pin of microphone with negative pin with cathode solder joint, the cathode solder joint is connected with the ground wire of circuit in copper foil conductive layer, microphone pcb board side is additionally provided with copper chaff, the copper chaff is located at positive solder joint side, and positive solder joint is surrounded, the copper chaff is connected with the ground wire of circuit in copper foil conductive layer, copper chaff and copper foil conductive layer are integral structure, pcb board is during cutting windowing , copper foil conductive layer is not cut off, surrounds positive solder joint to reserve copper chaff, play the role of guiding flow of electrostatic charges to reducing the noise of microphone.

Description

A kind of microphone pcb board of antistatic

Technical field

The utility model relates to a kind of circuit board, the microphone pcb board of specifically a kind of antistatic.

Background technique

Printed circuit board is also known as printed circuit board, and abbreviation wiring board is important electronic component.It is using insulation board as base Material is cut into certain size, at least has a conductive pattern thereon, and be furnished with hole (such as element, fastener hole, plated through-hole), For replacing the chassis of previous device electronic component, and realize the interconnection between electronic component.Since this plate is It is fabricated to using electron printing, therefore referred to as printed circuit board.

Printed circuit board is used widely in transmitter field, and by taking microphone as an example, microphone connects with positive and negative two Head, microphone are welded on microphone pcb board, and microphone cathode connects circuit board ground, and anode connects on circuit boards, but due to sky There are some electrostatic in gas, and electrostatic charge can be moved along the smallest path of resistance, and microphone anode is closer from pcb board edge, Cause electrostatic charge to be easy to enter the anode of microphone from circuit board side, to generate noise, influences the call effect of microphone Fruit；Electronic component can generate heat during the work time simultaneously, and the thermal diffusivity of some pcb boards in the market is bad, leads It causes pcb board to generate superheating phenomenon in use, pcb board is caused to damage.

Summary of the invention

The purpose of this utility model is to provide a kind of microphone pcb boards of antistatic, to solve in above-mentioned background technique The problem of proposition.

To achieve the above object, the utility model provides the following technical solutions:

A kind of microphone pcb board of antistatic, including copper foil conductive layer, heat conduction silicone and insulating substrate, the copper foil The bottom of conductive layer is coated with heat conduction silicone, and the bottom pressing of the heat conduction silicone has insulating substrate, and the copper foil is conductive It is etched with circuit on layer, positive solder joint and cathode solder joint are respectively equipped at the top of copper foil conductive layer, positive solder joint is for connecting Mike The positive pin of wind, cathode solder joint are used to connect the negative pin of microphone, circuit in the cathode solder joint and copper foil conductive layer Ground wire be connected, microphone pcb board side is additionally provided with copper chaff, and the copper chaff is located at positive solder joint side, and anode is welded Point surrounds, and the copper chaff is connected with the ground wire of circuit in copper foil conductive layer.

Preferably, it further includes the first heat dissipating layer, heat-dissipating aluminium plate and the second heat dissipating layer, the bottom pressing of the insulating substrate There is the first heat dissipating layer, the bottom of first heat dissipating layer, which successively presses, heat-dissipating aluminium plate and the second heat dissipating layer, the heat conductive silica gel Layer is internally embedded several upper thermally conductive sheets, and first heat dissipating layer is internally embedded several lower thermally conductive sheets, the upper thermally conductive sheet with Lower thermally conductive sheet is corresponding, heat conductive rod is fixedly installed between the upper thermally conductive sheet and lower thermally conductive sheet, the heat conductive rod is through insulation Substrate.

Preferably, first heat dissipating layer and the second heat dissipating layer are carbon-coating, and the carbon-coating is by carbon fiber compression moulding Plate structure.

Preferably, heat conductive rod cylinder barred body made of carbon fiber.

Preferably, second heat dissipating layer is internally embedded several support steel bars, and the support steel bar is along the second heat dissipating layer Length direction extend and be placed in parallel.

Preferably, the bottom pressing of second heat dissipating layer has copper sheet, is provided with conductive hole on microphone pcb board, and being used for will Copper sheet is connected with the ground wire of circuit in copper foil conductive layer.

Compared with prior art, the utility model has the advantages that: the utility model by using copper chaff by microphone just Pole surrounds, the characteristic moved using charge along minimum resistance path, quiet when there is electrostatic charge around solder joint positive on circuit board Charge is just moved along the lesser copper foil of resistance, and is entered in the ground wire on wiring board, to effectively prevent electrostatic charge to wheat The interference of gram wind anode, reduces the noise of microphone.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the microphone pcb board of antistatic；

Fig. 2 is the cross-sectional view of the microphone pcb board of antistatic；

In figure: copper foil conductive layer 1, heat conduction silicone 2, insulating substrate 3, positive solder joint 4, cathode solder joint 5, copper chaff 6, the One heat dissipating layer 7, heat-dissipating aluminium plate 8, the second heat dissipating layer 9, upper thermally conductive sheet 10, heat conductive rod 11, lower thermally conductive sheet 12, support steel bar 13, copper Plate 14, conductive hole 15.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1~2, in the utility model embodiment, a kind of microphone pcb board of antistatic, including copper foil are conductive The bottom of layer 1, heat conduction silicone 2 and insulating substrate 3, the copper foil conductive layer 1 is coated with heat conduction silicone 2, the thermal conductive silicon The bottom pressing of glue-line 2 has insulating substrate 3, and circuit is etched on the copper foil conductive layer 1, and 1 top of copper foil conductive layer is set respectively There are positive solder joint 4 and cathode solder joint 5, positive solder joint 4 is used to connect the positive pin of microphone, and cathode solder joint 5 is for connecting wheat The negative pin of gram wind, the cathode solder joint 5 are connected with the ground wire of circuit in copper foil conductive layer 1, and microphone pcb board side is also set There is copper chaff 6, the copper chaff 6 is located at 4 side of positive solder joint, and positive solder joint 4 is surrounded, and the copper chaff 6 is led with copper foil The ground wire of circuit is connected in electric layer 1, and copper chaff 6 and copper foil conductive layer 1 are integral structure, during pcb board cuts and opens a window, Not copper foil conductive layer cut off, to reserve copper chaff 6, positive solder joint 4 is surrounded, play guidance flow of electrostatic charges to work With reduction microphone noise as caused by electrostatic charge.

Microphone pcb board further includes the first heat dissipating layer 7, heat-dissipating aluminium plate 8 and the second heat dissipating layer 9, the bottom of the insulating substrate 3 Portion's pressing has the first heat dissipating layer 7, and the bottom of first heat dissipating layer 7, which successively presses, heat-dissipating aluminium plate 8 and the second heat dissipating layer 9, institute Several upper thermally conductive sheets 10 that are internally embedded of heat conduction silicone 2 are stated, first heat dissipating layer 7 is internally embedded several lower thermally conductive sheets 12, the upper thermally conductive sheet 10 is corresponding with lower thermally conductive sheet 12, is fixedly installed between the upper thermally conductive sheet 10 and lower thermally conductive sheet 12 Heat conductive rod 11, the heat conductive rod 11 run through insulating substrate 3, and first heat dissipating layer 7 and the second heat dissipating layer 9 are carbon-coating, the carbon Layer is by the plate structure of carbon fiber compression moulding, the 11 cylinder barred body made of carbon fiber of heat conductive rod, copper foil conduction Layer 1 on electronic component generate heat absorbed by heat conduction silicone 2, and by upper thermally conductive sheet 10, heat conductive rod 11 and under it is thermally conductive Piece 12 transfers heat in the first heat dissipating layer 7 and the second heat dissipating layer 9, while heat-dissipating aluminium plate 8 being cooperated to reach good heat dissipation effect Fruit.

Second heat dissipating layer 9 is internally embedded several support steel bars 13, and the support steel bar 13 is along the second heat dissipating layer 9 Length direction extends and is placed in parallel, and support steel bar plays a supporting role to circuit board, and avoiding microphone from dropping leads to circuit board Fracture, improves its service life.

The bottom pressing of second heat dissipating layer 9 has copper sheet 14, and conductive hole 15 is provided on microphone pcb board, is used for copper Plate 14 is connected with the ground wire of circuit in copper foil conductive layer 1, and copper sheet 14 can attract the electrostatic charge below pcb board, and pass through conduction Electrostatic charge is imported into the ground wire of circuit by hole 15, further functions as antistatic effect；First heat dissipating layer 7, the simultaneously Two heat dissipating layers 9 and heat conductive rod 11 are made of carbon fiber, they and heat-dissipating aluminium plate 8 all have good electric conductivity and copper sheet 14 It is linked to be an entirety, is connect with ground wire, can further absorbs the electrostatic charge around pcb board.

The working principle of the utility model is: the structure of pcb board includes base and copper foil layer, cut in microphone wiring board When, only base is cut off, to reserve the copper chaff 6 being connected with copper foil conductive layer 1；In use, just by microphone Negative the two poles of the earth are respectively welded on positive solder joint 4 and cathode solder joint 5, and copper chaff 6 surrounds microphone anode, when circuit board side goes out It when existing electrostatic charge, is just moved along the lesser copper chaff 6 of resistance, and enters the ground wire on wiring board, to effectively prevent electrostatic Interference of the lotus to microphone anode, reduces noise；The heat that electronic component on copper foil conductive layer 1 generates is by heat conduction silicone 2 absorb, and transfer heat to the first heat dissipating layer 7 and the second heat dissipation by upper thermally conductive sheet 10, heat conductive rod 11 and lower thermally conductive sheet 12 In layer 9, while heat-dissipating aluminium plate 8 being cooperated to reach good heat dissipation effect, the support steel bar 13 in the second heat dissipating layer 9 plays circuit board To supporting role, avoiding microphone from dropping causes circuit board to be broken, and improves its service life.

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (6)

1. a kind of microphone pcb board of antistatic, including copper foil conductive layer (1), heat conduction silicone (2) and insulating substrate (3), It is characterized in that, the bottom of the copper foil conductive layer (1) is coated with heat conduction silicone (2), and the bottom of the heat conduction silicone (2) is pressed Conjunction has insulating substrate (3), and circuit is etched on the copper foil conductive layer (1), is respectively equipped with positive weldering at the top of copper foil conductive layer (1) Point (4) and cathode solder joint (5), positive solder joint (4) are used to connect the positive pin of microphone, and cathode solder joint (5) is for connecting wheat The negative pin of gram wind, the cathode solder joint (5) are connected with the ground wire of copper foil conductive layer (1) interior circuit, microphone pcb board side It is additionally provided with copper chaff (6), the copper chaff (6) is located at positive solder joint (4) side, and positive solder joint (4) is surrounded, the copper foil Item (6) is connected with the ground wire of copper foil conductive layer (1) interior circuit.

2. the microphone pcb board of antistatic according to claim 1, which is characterized in that it further includes the first heat dissipating layer (7), the bottom pressing of heat-dissipating aluminium plate (8) and the second heat dissipating layer (9), the insulating substrate (3) has the first heat dissipating layer (7), described The bottom of first heat dissipating layer (7), which successively presses, heat-dissipating aluminium plate (8) and the second heat dissipating layer (9), the heat conduction silicone (2) it is interior Portion is embedded in several upper thermally conductive sheets (10), and first heat dissipating layer (7) is internally embedded several lower thermally conductive sheets (12), described thermally conductive Piece (10) is corresponding with lower thermally conductive sheet (12), is fixedly installed with heat conductive rod between the upper thermally conductive sheet (10) and lower thermally conductive sheet (12) (11), the heat conductive rod (11) runs through insulating substrate (3).

3. the microphone pcb board of antistatic according to claim 2, which is characterized in that first heat dissipating layer (7) and Two heat dissipating layers (9) are carbon-coating, and the carbon-coating is the plate structure by carbon fiber compression moulding.

4. the microphone pcb board of antistatic according to claim 2, which is characterized in that the heat conductive rod (11) is by carbon fiber Cylindrical barred body made of dimension.

5. the microphone pcb board of antistatic according to claim 2, which is characterized in that second heat dissipating layer (9) it is interior Portion is embedded in several support steel bars (13), and support steel bar (13) extends along the length direction of the second heat dissipating layer (9) and puts in parallel It sets.

6. the microphone pcb board of antistatic according to claim 2, which is characterized in that the bottom of second heat dissipating layer (9) Portion's pressing has copper sheet (14), and conductive hole (15) are provided on microphone pcb board, for will be in copper sheet (14) and copper foil conductive layer (1) The ground wire of circuit is connected.