CN204031426U - A kind of have the circuit board of antistatic protection function and a kind of bluetooth earphone - Google Patents
A kind of have the circuit board of antistatic protection function and a kind of bluetooth earphone Download PDFInfo
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- CN204031426U CN204031426U CN201420356755.0U CN201420356755U CN204031426U CN 204031426 U CN204031426 U CN 204031426U CN 201420356755 U CN201420356755 U CN 201420356755U CN 204031426 U CN204031426 U CN 204031426U
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- circuit board
- fluting
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- discharge tip
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Abstract
The utility model provides a kind of and has the circuit board of antistatic protection function and a kind of bluetooth earphone, without the need to using electrostatic discharging element, and directly discharge tip and electric capacity are set in interface area, power supply area, discharge tip and electric capacity are set in wiring region or fluting is set, just well can carry out electrostatic defending to circuit board by discharge tip, electric capacity and fluting, reduce circuit board cost.
Description
Technical field
The utility model relates to circuit board technology field, particularly relates to a kind ofly to have the circuit board of antistatic protection function and a kind of bluetooth earphone.
Background technology
On various electronic equipment, due in circuit package, assembling, the process that uses, the interaction between its each components and parts, its circuit board is also very easy to build up electrostatic; These electrostatic; all breakneck to electronic devices and components; static discharge (ESD) can bring destructive consequence to electronics environment; often can puncture and damage the electronic device on circuit board, although electronic device is not breakdown sometimes, also can affect the life-span that it normally works; and in order to realize increasing function; device on the PCB of present electronic equipment also gets more and more, and cloth board space is more and more less, and the harm of electrostatic is also more and more significant.
In addition, due to the electromagnetic interference of the wide band high pressure that electrostatic produces, can also be coupled on the circuit of circuit board, can disturb electronic device, even make device failure or misoperation, the reliability of electronic device works is reduced greatly.
Therefore, improve the antistatic capacity of circuit board on electronic equipment, being that electronic equipment can exempt from damage, ensureing that it normally works, is current urgent problem.
The method of existing solution static discharge (ESD) mainly contains adds antistatic device, such as clamp diode, piezo-resistance, TVS diode, and this method cost compare is high, and also has the problem of leakage current.Also easily fall flat.
Utility model content
The purpose of this utility model is that providing a kind of has the circuit board of antistatic protection function and a kind of bluetooth earphone, just can carry out electrostatic defending very well without the need to additionally adding antistatic device.
For solving the problem, the utility model provides a kind of circuit board with antistatic protection function, comprises interface area, power supply area and wiring region; The gap position of described interface area is provided with first kind discharge tip and electric capacity; Described power supply area is provided with Equations of The Second Kind discharge tip and filter circuit; Described wiring region is provided with the fluting of antistatic and/or described wiring region is provided with the 3rd class discharge tip and electric capacity.
Further, described interface area comprises at least one in USB interface, button, memory card interface, LED light, microphone, loud speaker, camera and illuminating lamp.
Further, described wiring region comprises antenna and holding wire.
Further, the gap position of described antenna is provided with first kind fluting.
Further, when adjacent two holding wires are non-differential cabling, between two holding wires, be provided with Equations of The Second Kind fluting; When adjacent two holding wires are difference cabling, between two holding wires, be provided with the 3rd class discharge tip and electric capacity.
Further, described first kind fluting, Equations of The Second Kind fluting for rectangular channel or elliptical slot or two be triangle, the middle combination slot for rectangle.
Further, described in the notch be recessed on flaggy vary in size, the notch being positioned at sheet surface layer is greater than the notch of inner plating, and the flute length of described fluting is 1mm.
Further, in described power supply area, the position of power interface end is provided with the RC filter circuit become with capacitance arrangement by resistance, and the position away from power interface end is provided with filter capacitor, and the two ends of described filter capacitor are in parallel with the electric capacity two ends in described RC filter circuit.
Further; on described circuit board; fringe region is provided with Conservation areas, and described Conservation areas is provided with at least one opening, and the position that the edge cabling of described power supply area, wiring region and interface area is relative with Conservation areas is provided with the 4th class discharge tip and storage capacitor.
The utility model also provides a kind of bluetooth earphone, comprises one of above-mentioned circuit board.
Compared with prior art, what the utility model provided has the circuit board of antistatic protection function and a kind of bluetooth earphone, without the need to using electrostatic discharging element, and directly discharge tip and electric capacity are set in interface area, power supply area, discharge tip and electric capacity are set in wiring region or fluting is set, just well can carry out electrostatic defending to circuit board by discharge tip, electric capacity and fluting, reduce circuit board cost.
Accompanying drawing explanation
Figure 1A to 1C is the blue-tooth earphone structure schematic diagram of the utility model specific embodiment;
Fig. 2 is the flaggy figure of the bluetooth earphone pcb board of the utility model specific embodiment;
Fig. 3 A to 3B is the electrostatic discharge circuit schematic diagram of the interface area of the utility model specific embodiment;
Fig. 4 A to 4B is the electrostatic discharge circuit schematic diagram of the power supply area of the utility model specific embodiment;
Fig. 5 is the aerial position fluting schematic diagram of the utility model specific embodiment wiring region;
Fig. 6 is the non-differential cabling fluting figure of the wiring region of the utility model specific embodiment;
Fig. 7 is the stereogram be recessed on PCB of the utility model specific embodiment;
Fig. 8 is the equivalent circuit diagram of the fluting of the utility model specific embodiment;
Fig. 9 to Figure 11 is the antistatic test result figure of the difference fluting of the utility model specific embodiment;
Figure 12 is the antistatic test result figure of the difference fluting shape of the utility model specific embodiment;
Figure 13 is the structural representation of the bluetooth earphone pcb board of the utility model specific embodiment.
Embodiment
For making the purpose of this utility model, feature becomes apparent, and be further described, but the utility model can realize by different forms, should not think and just be confined to described embodiment below in conjunction with accompanying drawing to embodiment of the present utility model.
The utility model provides a kind of circuit board (pcb board) with antistatic protection function, it can be a four-layer circuit board formed successively primarily of signals layer, stratum, bus plane and signals layer, also can be a 6-layer circuit board formed successively primarily of signals layer, signals layer, stratum, bus plane, signals layer and signals layer, can also be a 8-layer printed circuit board formed successively primarily of signals layer, signals layer, stratum, signals layer, signals layer, bus plane, signals layer and signals layer.In order to improve electrostatic defending (ESD) performance of pcb board, in the signal place (interface area) near gap, such as the place such as button, USB interface arranges discharge tip and electric capacity, adds a RC filter circuit at power port, between the circuit of easily electric discharge, open a groove.
Below for Bluetooth headset circuit board, discuss the technical solution of the utility model in detail.
Please refer to Figure 1A to 1C, the bluetooth earphone of the present embodiment comprises: usb 10, switching on and shutting down button 11, status indicator lamp 12, microphone 13, volume adjusting key 14, loud speaker 15, pcb board 16, battery and Bluetooth antenna.
Please refer to Fig. 2, the pcb board 16 of the present embodiment is four-layer circuit board, wherein, S1 layer laying signal wire, the floor file of G layer, P layer paving power supply, S2 layer laying signal wire, can ensure that signal quick backflow is to ground level, and give the couple planar that power supply one is good, effectively improve static discharge (ESD) performance.
According to the electronic device that above-mentioned bluetooth earphone comprises, the circuit board of the present embodiment specifically can be divided into interface area, power supply area and wiring region.Described interface area mainly refers to region pcb board being used for arranging the devices such as USB interface, audio interface, button, memory card interface, LED light, microphone, loud speaker, camera and illuminating lamp, these regions are generally discrete regions, usually the diverse location at pcb board edge is distributed in, the device that these regions are arranged generally needs by the gap of bluetooth earphone shell exposed in bluetooth earphone case surface, these devices and the connection of circuit board are also than being easier to seamed gap simultaneously, and external electrostatic is easily introduced in these gaps.Therefore, the present embodiment arranges first kind discharge tip and electric capacity at these than being easier to apertured position.Please refer to Fig. 3 A, button this type of than being easier to while apertured position arranges first kind discharge tip D1, add an electric capacity C1 again, C1 generally selects 4.7 μ F or larger, absorb the energy of first kind discharge tip when static discharge, Fig. 3 B is the equivalent circuit diagram of Fig. 3 A, first kind discharge tip D1 is equivalent to an ESD diode, discharge tip D5 is made up of two cutting-edge structure, formed by adding most advanced and sophisticated triangle in the process of one of them tip cabling, most advanced and sophisticated leg-of-mutton size is according to 0402 pad design, for the acute triangle of 0.5mm*0.6mm, another tip is added most advanced and sophisticated triangle by the position that direct ground on circuit edges of boards is corresponding with cabling upper prong triangle and formed.Due to when the electrostatic charge from the external world enters the pcb board of bluetooth earphone via button gap or user's pressing keys, the stratum G of pcb board is conducted to fast by first kind discharge tip D1 and storage capacitor C1, to avoid electrostatic charge to affect functional circuit on circuit board and other electronic devices via button, or make the important chip on pcb board impaired.
When pcb board size allows, in order to realize the better static discharge effect of interface area, many group first kind discharge tip and electric capacity can be set.
Please refer to Fig. 4 A and 4B; while D2, D3, D4 of Equations of The Second Kind discharge tip is set in power supply area; add a resistance R1, two electric capacity C2, C3 again; wherein R1, C3 form the energy that RC filter circuit absorbs the Equations of The Second Kind discharge tip static discharge from power end; C2 has filter action to power supply, and protects Bluetooth chip and other functional chips of bluetooth earphone.R1, C2 is placed on the position near power interface end, C3 is placed on die terminals (namely away from the position of power interface end), C2 and C3 is in parallel, filter capacitor C2, except can absorbing the effect of the repercussions energy of Equations of The Second Kind discharge tip static discharge further, can also play stabilization to power supply to the power supply of functional circuit on pcb board and other electronic devices.D2, D3, D4 of Equations of The Second Kind discharge tip are all equivalent to an ESD diode, form by two cutting-edge structure, formed by adding most advanced and sophisticated triangle in the process of one of them tip cabling, most advanced and sophisticated leg-of-mutton size is according to 0402 pad design, for the acute triangle of 0.5mm*0.6mm, another tip is added most advanced and sophisticated triangle by the position that direct ground on circuit edges of boards is corresponding with cabling upper prong triangle and formed.When because power source charges input or power supply export, the electrostatic charge of generation enters the pcb board of bluetooth earphone via power pins or power circuit, the stratum G of pcb board is conducted to fast by Equations of The Second Kind discharge tip D2, D3, D4, RC filter circuit and filter capacitor C2, to avoid electrostatic charge to affect functional circuit on circuit board and other electronic devices via power circuit, or make the important chip on pcb board impaired.
Similarly, when pcb board size allows, in order to realize the better static discharge effect in power supply area, many group Equations of The Second Kind discharge tip and electric capacity can be set.
The wiring region of the present embodiment comprises antenna and holding wire.Please refer to Fig. 5, in wiring region, open a groove near the position of antenna 17, namely slot 18, please refer to Fig. 6 simultaneously, a groove is opened between the signal lead of easily electric discharge, namely between signal lead 191 and 192, fluting 20 is set, please refer to Fig. 7, the 0.5mm larger than internal layer of the top layer opening of fluting 18,20, flute length is all greater than 1mm, and groove width is at least 0.5mm (being such as 1mm).Wherein, the signal lead 191 and 192 of easy electric discharge, can be positioned at same signals layer and adjacent nearer radiofrequency signal cabling and audio signal cabling, also can be non-differential signal cabling of the same type, fluting 18,20 effectively can increase creepage distance, improves anti-electrostatic discharging (ESD) ability of sensitive signal.
Please refer to Fig. 8, Figure 8 shows that the equivalent electric circuit of fluting 18,20, the thickness of bluetooth earphone pcb board calculates according to 1.0mm, electric capacity C8 trends towards infinity, L1 is about 0.8nH, and as can be seen here, fluting 18,20 mainly introduces capacity effect, therefore can the absorption signal line electrostatic of releasing preferably, and then substantially increase anti-electrostatic discharging (ESD) ability of bluetooth earphone.
Fig. 9 to Figure 11 is that different fluting shape and fluting size are to the compliance test result figure of circuit board electrostatic defending.Fig. 9 has indicated the anti-contact discharge 8KV situation of different rounded groove size, 0 representative is not passed through, 1 representative is passed through, as can be seen from the figure, when being greater than 1mm when slotting, when playing contact discharge, between signal, anti-8KV passes through, but the Area comparison that this fluting accounts for is large, requires that PCB size is larger, be applicable to large-sized wear-type bluetooth earphone, be not too applicable to the small Bluetooth earphone shown in Figure 1A to Fig. 1 C;
Figure 10 has indicated the anti-contact discharge 8KV situation of different ellipse fluting size, 0 representative is not passed through, 1 representative is passed through, as can be seen from the figure, when being greater than 0.5mm*1mm when slotting, when playing contact discharge, between signal, anti-8KV passes through, this area relatively accounted for can be less, can apply on the bluetooth earphone shown in Figure 1A to Fig. 1 C.
Figure 11 has indicated the anti-contact discharge 8KV situation of four kinds of difformities fluting 201,202,203,204, and 201,202,203,204 are respectively wedge angle rectangular channel, two is triangle and the middle combination slot for rectangle, elliptical slot and round rectangle groove for four kinds of difformities flutings.Therefrom can find out, no matter fluting is sharp or circle, and when playing contact discharge, between signal, anti-8KV passes through.In circuit board making, generally select the 4th kind of mode of grooving, this Method compare conserve space, and for circuit board process also than being easier to.
Please refer to Figure 12, further, when adjacent two bars cablings are difference cabling, the audio signal output line such as connecing loud speaker, the audio signal input line connecing microphone, connect the radiofrequency signal input line of Bluetooth chip or antenna, connect the radiofrequency signal output line of Bluetooth chip or antenna, add the 3rd class discharge tip D5, D6 and storage capacitor C4, C5 respectively in one end of each bars cabling.D5, D6 of 3rd class discharge tip are all equivalent to an ESD diode, form by two cutting-edge structure, formed by adding most advanced and sophisticated triangle in the process of one of them tip cabling, most advanced and sophisticated leg-of-mutton size is according to 0402 pad design, for the acute triangle of 0.5mm*0.6mm, another tip is added most advanced and sophisticated triangle by the position that direct ground on circuit edges of boards is corresponding with cabling upper prong triangle and formed.
Please refer to Figure 13; further; in bluetooth earphone pcb board of the present utility model; pcb board is provided with Conservation areas 23 around fringe region; Conservation areas 23 is provided with at least one opening 231, and the position that the edge cabling 193 of power supply area, wiring region and interface area is relative with Conservation areas 23 is provided with the 4th class discharge tip D5 and storage capacitor C7.Namely the 4th class discharge tip D5 is made up of two cutting-edge structure; one of them tip is formed by adding most advanced and sophisticated triangle in the process of wiring by being arranged in power supply area, the wiring at edge of wiring region and interface area or holding wire; most advanced and sophisticated leg-of-mutton size is according to 0402 pad design; for the acute triangle of 0.5mm*0.6mm, another tip is added most advanced and sophisticated triangle by the direct position corresponding with cabling upper prong triangle on the ground of Conservation areas 23 and formed.Storage capacitor C7 can be surface patch formula electric capacity, and capacitance is 0 ~ 100pf, withstand voltage is more than or equal to 1000V.When there is two or more opening 231, the size and shape of opening 231 can be identical, also can be different, can be the combination of such as trapezoidal, rectangle, star, arc and above-mentioned various shape.
Conservation areas 23 not exclusively surrounds power supply area by opening, outside wiring region, and between Conservation areas 23 and edge line, be provided with the 4th class discharge tip and storage capacitor, also take electrostatic defending measure at interface area simultaneously, the problem of electrostatic defending on further solution circuit board, quickly by the ground of interface area, the Electro-static Driven Comb on the ground of power supply area and the ground of wiring region is to described Conservation areas, avoid on chip circuit that the electromagnetic interference of wide band high pressure produced due to electrostatic is coupled to pcb board and electronic device is disturbed, even make the problem of device failure or misoperation, and produce a large amount of electrostatic and the problem that affects bluetooth earphone reliability owing to contacting each interface in artificial or other situations.
The present embodiment is for bluetooth earphone, discuss the technical solution of the utility model in detail, but foregoing circuit plate is not merely applicable to bluetooth earphone product, also can with being applied on electronic products such as wearing movie theatre, intelligent watch, intelligent glasses, smart mobile phone, antenna wherein also not only refers to Bluetooth antenna, can be infrared antenna, NFC antenna etc.
Obviously, those skilled in the art can carry out various change and modification to utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (10)
1. there is a circuit board for antistatic protection function, it is characterized in that, comprise interface area, power supply area and wiring region; The gap position of described interface area is provided with first kind discharge tip and electric capacity; Described power supply area is provided with Equations of The Second Kind discharge tip and filter circuit; Described wiring region is provided with the fluting of antistatic and/or described wiring region is provided with the 3rd class discharge tip and electric capacity.
2. circuit board as claimed in claim 1, it is characterized in that, described interface area comprises at least one in USB interface, audio interface, button, memory card interface, LED light, microphone, loud speaker, camera and illuminating lamp.
3. circuit board as claimed in claim 1, it is characterized in that, described wiring region comprises antenna and holding wire.
4. circuit board as claimed in claim 3, is characterized in that, the gap position of described antenna is provided with first kind fluting.
5. circuit board as claimed in claim 3, is characterized in that, when adjacent two holding wires are non-differential cabling, is provided with Equations of The Second Kind fluting between two holding wires; When adjacent two holding wires are difference cabling, between two holding wires, be provided with the 3rd class discharge tip and electric capacity.
6. circuit board as claimed in claim 5, is characterized in that, described first kind fluting, Equations of The Second Kind fluting for rectangular channel or elliptical slot or two be triangle, the middle combination slot for rectangle.
7. circuit board as claimed in claim 6, is characterized in that, in described power supply area, described in the notch be recessed on flaggy vary in size, the notch being positioned at sheet surface layer is greater than the notch of inner plating, and the flute length of described fluting is 1mm.
8. circuit board as claimed in claim 1, it is characterized in that, in described power supply area, the position of power interface end is provided with the RC filter circuit become with capacitance arrangement by resistance, position away from power interface end is provided with filter capacitor, and the two ends of described filter capacitor are in parallel with the electric capacity two ends in described RC filter circuit.
9. the circuit board according to any one of claim 1 to 8; it is characterized in that; on described circuit board; fringe region is provided with Conservation areas; described Conservation areas is provided with at least one opening, and the position that the edge cabling of described power supply area, wiring region and interface area is relative with Conservation areas is provided with the 4th class discharge tip and storage capacitor.
10. a bluetooth earphone, is characterized in that, comprises the circuit board according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356755.0U CN204031426U (en) | 2014-06-30 | 2014-06-30 | A kind of have the circuit board of antistatic protection function and a kind of bluetooth earphone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420356755.0U CN204031426U (en) | 2014-06-30 | 2014-06-30 | A kind of have the circuit board of antistatic protection function and a kind of bluetooth earphone |
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| CN204031426U true CN204031426U (en) | 2014-12-17 |
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| CN201420356755.0U Active CN204031426U (en) | 2014-06-30 | 2014-06-30 | A kind of have the circuit board of antistatic protection function and a kind of bluetooth earphone |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038866A (en) * | 2014-06-30 | 2014-09-10 | 青岛歌尔声学科技有限公司 | Circuit board with static protection function and Bluetooth earphone |
| CN105071795A (en) * | 2015-08-17 | 2015-11-18 | 广东欧珀移动通信有限公司 | Multiplex circuit based on USB interface |
| CN108391191A (en) * | 2018-01-30 | 2018-08-10 | 努比亚技术有限公司 | A kind of Headphone structure and mobile terminal |
| CN108810704A (en) * | 2018-07-06 | 2018-11-13 | 歌尔股份有限公司 | earphone and earphone charging assembly |
| CN109348344A (en) * | 2018-11-23 | 2019-02-15 | 歌尔股份有限公司 | Electrostatic protection structure, earphone adapter and electronic equipment |
| WO2020216140A1 (en) * | 2019-04-25 | 2020-10-29 | 华为技术有限公司 | Wireless earphone |
| TWI810627B (en) * | 2021-08-13 | 2023-08-01 | 和碩聯合科技股份有限公司 | Electronic device of discharging static electricity |
-
2014
- 2014-06-30 CN CN201420356755.0U patent/CN204031426U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038866A (en) * | 2014-06-30 | 2014-09-10 | 青岛歌尔声学科技有限公司 | Circuit board with static protection function and Bluetooth earphone |
| CN105071795A (en) * | 2015-08-17 | 2015-11-18 | 广东欧珀移动通信有限公司 | Multiplex circuit based on USB interface |
| CN108391191A (en) * | 2018-01-30 | 2018-08-10 | 努比亚技术有限公司 | A kind of Headphone structure and mobile terminal |
| CN108810704A (en) * | 2018-07-06 | 2018-11-13 | 歌尔股份有限公司 | earphone and earphone charging assembly |
| CN108810704B (en) * | 2018-07-06 | 2020-05-22 | 歌尔股份有限公司 | Earphone and earphone charging assembly |
| CN109348344A (en) * | 2018-11-23 | 2019-02-15 | 歌尔股份有限公司 | Electrostatic protection structure, earphone adapter and electronic equipment |
| CN109348344B (en) * | 2018-11-23 | 2020-05-22 | 歌尔股份有限公司 | Electrostatic protection structure, earphone adapter and electronic equipment |
| WO2020216140A1 (en) * | 2019-04-25 | 2020-10-29 | 华为技术有限公司 | Wireless earphone |
| US11962983B2 (en) | 2019-04-25 | 2024-04-16 | Huawei Technologies Co., Ltd. | Wireless earphone |
| TWI810627B (en) * | 2021-08-13 | 2023-08-01 | 和碩聯合科技股份有限公司 | Electronic device of discharging static electricity |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230427 Address after: 233000 85 Shengli Road, bengshan mountain, Bengbu, Anhui Patentee after: Bengbu wild hill network technology Co.,Ltd. Address before: 266061 floor 5, building 3, Guozhan wealth center, No. 18, Qinling Road, Laoshan District, Qingdao, Shandong Province Patentee before: QINGDAO GOERTEK TECHNOLOGY Co.,Ltd. |