CN203951010U - A kind of audio connecting cord with anti-jamming circuit - Google Patents
A kind of audio connecting cord with anti-jamming circuit Download PDFInfo
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- CN203951010U CN203951010U CN201420290433.0U CN201420290433U CN203951010U CN 203951010 U CN203951010 U CN 203951010U CN 201420290433 U CN201420290433 U CN 201420290433U CN 203951010 U CN203951010 U CN 203951010U
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- microphone
- audio
- signal line
- ground wire
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Abstract
The utility model discloses a kind of audio connecting cord with anti-jamming circuit, it comprises the audio input end being electrically connected successively, connecting line and audio output, connecting line comprises microphone signal line, sound channel signal line and ground wire, microphone signal line and ground wire are electrically connected with microphone respectively, sound channel signal line and ground wire are electrically connected with audio output respectively, on microphone signal line, be in series with the first inductance, between microphone signal line and ground wire, be provided with the first electric capacity and the second electric capacity, one end of the first inductance is connected with ground wire by the first electric capacity, the other end of the first inductance is connected with ground wire by the second electric capacity.The utility model, by add anti-jamming circuit structure on audio transmission line, is realized the audio transmission line filtration of environmental interference signal to external world, improves people's experience.And the utility model is simple in structure, production cost is low, has good economic and social benefit.The utility model can be widely used in various audio transmission lines.
Description
Technical field
The utility model relates to audio signal transmission wire, relates in particular to a kind of audio connecting cord.
Background technology
Audio connecting cord refers to the audio transmission line that can connect mobile terminal (as mobile phone, panel computer and MP3 etc.) and stereo set (as automobile audio), and it can be by the audio signal transmission of mobile terminal to stereo set output.
Along with the development of modern science and technology, the product of the modernization science and technology such as electronic digital product and automobile has become modern's indispensable part of living.Along with the fast development of mobile communication cause, mobile phone has become an indispensable part in people's life, work in recent years, especially ought drive can also carry out the communications such as commercial affairs, office on trip or car, and mobile phone provides great convenience to user; But universal along with mobile phone, the ratio that causes traffic accident because phoning with mobile telephone in the time driving, also in continuous rising, because need driver to free hand to incoming call answering in driving, is easily disperseed driver's attentiveness, and traffic accident very easily occurs.Therefore people need a kind of equipment that had not only conveniently received calls but also can reduce traffic accident, so bluetooth earphone becomes many people's selection, but bluetooth earphone price is relatively high and need to use battery, have hindered the universal of bluetooth earphone; If when hands-free answering cell phone, loudspeaker sound is too little and tonequality is also bad, also harder when driver receives calls, and microphone from driver excessively away from, the other side can not clearly be received calls, so need to connect external speakers and improve the audio quality of mobile terminal.
In prior art, although there is audio connecting cord, but because external environmental interference is large, audio signal is easily introduced noise in transmitting procedure, audio transmission quality is undesirable, if mobile terminal is smart mobile phone, the sensitivity that microphone receives also can reduce because of the existence of audio connecting cord interference signal, affect speech quality, thereby reduced people's experience.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide a kind of band anti-jamming circuit, lower-cost audio connecting cord.
The technical scheme that the utility model adopts is:
A kind of audio connecting cord with anti-jamming circuit, it comprises the audio input end being electrically connected successively, connecting line and audio output, on described connecting line, be provided with microphone, described connecting line comprises microphone signal line, sound channel signal line and ground wire, described microphone signal line and ground wire are electrically connected with microphone respectively, described sound channel signal line and ground wire are electrically connected with audio output respectively, on described microphone signal line, be in series with the first inductance, between described microphone signal line and ground wire, be provided with the first electric capacity and the second electric capacity, one end of described the first inductance is connected with ground wire by the first electric capacity, the other end of described the first inductance is connected with ground wire by the second electric capacity.
Preferably, on described connecting line, be provided with pcb board, described the first inductance, the first electric capacity and the second electric capacity are arranged on pcb board.Be arranged on a pcb board and can save material.Obviously, polylith pcb board also can be set, above-mentioned electronic devices and components are separately positioned on polylith pcb board.
Preferably, described sound channel signal line comprises left channel signals line and right-channel signals line.
Preferably, described audio input end is 4 joint 3.5mm audio frequency contact pins, audio output is 3 joint 3.5mm audio frequency contact pins, described 4 joint 3.5mm audio frequency contact pins comprise L channel input, R channel input, microphone output and ground end, described 3 joint 3.5mm audio frequency contact pins comprise L channel output, R channel output and ground end, described L channel input is electrically connected by left channel signals line and L channel output, described R channel input is electrically connected by right-channel signals line and R channel output, described microphone output and microphone signal line are electrically connected, hold with ground wire describedly and be electrically connected.Adopt 3.5mm audio frequency contact pin to make the versatility of audio connecting cord stronger.
Preferably, described microphone comprises shell, in shell, be upwards disposed with vibrating diaphragm, pad, mould ring and wiring board by bottom, described moulding is provided with pole plate and copper ring in ring, on described wiring board, be provided with microphone input, hold and tube core, described microphone input and microphone signal line are electrically connected, and hold with ground wire describedly and are electrically connected.Microphone adopts this design, makes the range of receiving of microphone wider, and sensitivity is higher, is conducive to gather more remote audio signal.
Preferably, described microphone also comprises Air Filter, and described Air Filter is arranged on shell bottom surface.Adopt Air Filter to be designed with to be beneficial to microphone dustproof.
Preferably, described microphone boot is connected to microphone case, is provided with multiple continuant orifices on described microphone case.Microphone case both can have been protected microphone, can not affect again the audio signal sample of microphone.
Preferably, described pcb board is socketed with pcb board shell.
Preferably, described pcb board shell seals or semiclosed connection completely with microphone case, and described microphone case is slidably socketed on pcb board shell.
Preferably, described connecting line adopts tin-coated copper heart yearn, and it is made into telescopic spring shape.High-quality tin-coated copper heart yearn is conducive to reduce audio signal and in transmitting procedure, produces signal attenuation.Telescopic spring shape is made and is made the collection of tone frequency channel wire convenient.
The beneficial effects of the utility model are:
The utility model by adding anti-jamming circuit structure on audio transmission line, realize the audio transmission line filtration of environmental interference signal to external world, improve audio transmission quality, improve microphone receiving sensitivity and receiving range, thereby raising speech quality, and then improve people's experience.And the utility model is simple in structure, production cost is low, has good economic and social benefit.
In addition, the utility model, also by the design cleverly to microphone structure, strengthens the sensitivity that microphone receives, and has expanded the distance of microphone received audio signal.
The utility model can be widely used in various audio transmission lines.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Fig. 1 is the electrical block diagram of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of a kind of embodiment of the utility model;
Fig. 3 is the structural representation of a kind of embodiment of the utility model microphone;
Fig. 4 is the structure explosive view of a kind of embodiment of the utility model microphone.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
As depicted in figs. 1 and 2, a kind of audio connecting cord with anti-jamming circuit, it comprises the audio input end 10 being electrically connected successively, connecting line 20 and audio output 30, on described connecting line 20, be provided with microphone 40, described connecting line 20 comprises microphone signal line 21, sound channel signal line and ground wire 24, described microphone signal line 21 and ground wire 24 are electrically connected with microphone 40 respectively, described sound channel signal line and ground wire 24 are electrically connected with audio output 30 respectively, on described microphone signal line 21, be in series with the first inductance L 1, between described microphone signal line 21 and ground wire 24, be provided with the first capacitor C 1 and the second capacitor C 2, one end of described the first inductance L 1 is connected with ground wire 24 by the first capacitor C 1, the other end of described the first inductance L 1 is connected with ground wire 24 by the second capacitor C 2.
Wherein, the first inductance L 1, the first capacitor C 1 and the second capacitor C 2 and the annexation between them have formed anti-jamming circuit.Because the general amplitude of interference signal is less, sign mutation is stronger, and when the audio signal that microphone 40 receives is passed through anti-jamming circuit, interference signal can be filtered by anti-jamming circuit, normally pass through and audio signal is unaffected, thereby realized the filtration to interference signal.
Preferably, on described connecting line 20, be provided with pcb board (not shown), described the first inductance L 1, the first capacitor C 1 and the second capacitor C 2 are arranged on pcb board.Be arranged on a pcb board and can save material.Obviously, polylith pcb board also can be set, above-mentioned electronic devices and components are separately positioned on polylith pcb board.
Preferably, described sound channel signal line comprises left channel signals line 22 and right-channel signals line 23.
As shown in Figure 1, preferably, described audio input end 10 is 4 joint 3.5mm audio frequency contact pins, audio output 30 is 3 joint 3.5mm audio frequency contact pins, described 4 joint 3.5mm audio frequency contact pins comprise L channel input Lin, R channel input Rin, microphone output Mout and ground end GND, described 3 joint 3.5mm audio frequency contact pins comprise L channel output Lout, R channel output Rout and ground end GND, described L channel input Lin is electrically connected with L channel output Lout by left channel signals line 22, described R channel input Rin is electrically connected with R channel output Rout by right-channel signals line 23, described microphone output Mout and microphone signal line 21 are electrically connected, hold GND and ground wire 24 to be electrically connected describedly.Adopt 3.5mm audio frequency contact pin to make the versatility of audio connecting cord stronger.
Wherein, the line order of audio input end 10 from foremost start can be successively L channel input Lin, R channel input Rin, hold GND and microphone output Mout, can be also L channel input Lin, R channel input Rin, microphone output Mout and ground end GND.In this embodiment, taking the former as example.
As shown in Figure 3 and Figure 4, described microphone 40 comprises shell 41, in shell 41, be upwards disposed with vibrating diaphragm 42, pad 43, mould ring 44 and wiring board 45 by bottom, described moulding in ring 44 is provided with pole plate 46 and copper ring 47, on described wiring board 45, be provided with microphone input Min, hold GND and tube core 48, described microphone input Min and microphone signal line 21 are electrically connected, and hold GND and ground wire 24 to be electrically connected describedly.Microphone 40 adopts this design, makes the range of receiving of microphone 40 wider, and sensitivity is higher, is conducive to gather more remote audio signal.
Preferably, described microphone 40 also comprises Air Filter 49, and described Air Filter 49 is arranged on shell 41 bottom surfaces.Adopt Air Filter 49 to be designed with to be beneficial to microphone 40 dustproof.
Preferably, described microphone 40 is socketed with microphone case 52, is provided with multiple continuant orifices 53 on described microphone case 52.Microphone case 52 both can have been protected microphone 40, can not affect again the audio signal sample of microphone 40.
Preferably, described pcb board is socketed with pcb board shell 51.
Preferably, described pcb board shell 51 seals or semiclosed connection completely with microphone case 52, and described microphone case 52 is slidably socketed on pcb board shell 51.
Preferably, described connecting line 20 adopts tin-coated copper heart yearn, and it is made into telescopic spring shape.High-quality tin-coated copper heart yearn is conducive to reduce audio signal and in transmitting procedure, produces signal attenuation.Telescopic spring shape is made and is made the collection of audio connecting cord convenient.
The utility model by adding anti-jamming circuit structure on audio transmission line, realize the audio transmission line filtration of environmental interference signal to external world, improve audio transmission quality, improve microphone 40 receiving sensitivities and receiving range, thereby raising speech quality, and then improve people's experience.And the utility model is simple in structure, production cost is low, has good economic and social benefit.
In addition, the utility model, also by the design cleverly to microphone 40 structures, strengthens the sensitivity that microphone 40 receives, and has expanded the distance of microphone 40 received audio signals.
More than that better enforcement of the present utility model is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the distortion that these are equal to or replacement are all included in the application's claim limited range.
Claims (10)
1. the audio connecting cord with anti-jamming circuit, it is characterized in that: it comprises the audio input end being electrically connected successively, connecting line and audio output, on described connecting line, be provided with microphone, described connecting line comprises microphone signal line, sound channel signal line and ground wire, described microphone signal line and ground wire are electrically connected with microphone respectively, described sound channel signal line and ground wire are electrically connected with audio output respectively, on described microphone signal line, be in series with the first inductance, between described microphone signal line and ground wire, be provided with the first electric capacity and the second electric capacity, one end of described the first inductance is connected with ground wire by the first electric capacity, the other end of described the first inductance is connected with ground wire by the second electric capacity.
2. a kind of audio connecting cord with anti-jamming circuit according to claim 1, is characterized in that: on described connecting line, be provided with pcb board, described the first inductance, the first electric capacity and the second electric capacity are arranged on pcb board.
3. a kind of audio connecting cord with anti-jamming circuit according to claim 2, is characterized in that: described sound channel signal line comprises left channel signals line and right-channel signals line.
4. a kind of audio connecting cord with anti-jamming circuit according to claim 3, it is characterized in that: described audio input end is 4 joint 3.5mm audio frequency contact pins, audio output is 3 joint 3.5mm audio frequency contact pins, described 4 joint 3.5mm audio frequency contact pins comprise L channel input, R channel input, microphone output and ground end, described 3 joint 3.5mm audio frequency contact pins comprise L channel output, R channel output and ground end, described L channel input is electrically connected by left channel signals line and L channel output, described R channel input is electrically connected by right-channel signals line and R channel output, described microphone output and microphone signal line are electrically connected, hold with ground wire describedly and be electrically connected.
5. according to a kind of audio connecting cord with anti-jamming circuit described in claim 1 to 4 any one, it is characterized in that: described microphone comprises shell, in shell, be upwards disposed with vibrating diaphragm, pad, mould ring and wiring board by bottom, described moulding is provided with pole plate and copper ring in ring, on described wiring board, be provided with microphone input, hold and tube core, described microphone input and microphone signal line are electrically connected, and hold with ground wire describedly and are electrically connected.
6. a kind of audio connecting cord with anti-jamming circuit according to claim 5, is characterized in that: described microphone also comprises Air Filter, and described Air Filter is arranged on shell bottom surface.
7. according to a kind of audio connecting cord with anti-jamming circuit described in claim 1,2,3,4 or 6, it is characterized in that: described microphone boot is connected to microphone case, on described microphone case, be provided with multiple continuant orifices.
8. according to a kind of audio connecting cord with anti-jamming circuit described in claim 2 to 4 any one, it is characterized in that: described pcb board is socketed with pcb board shell.
9. a kind of audio connecting cord with anti-jamming circuit according to claim 8, is characterized in that: described pcb board shell seals or semiclosed connection completely with microphone case, and described microphone case is slidably socketed on pcb board shell.
10. according to a kind of audio connecting cord with anti-jamming circuit described in claim 1,2,3,4,6 or 9, it is characterized in that: described connecting line adopts tin-coated copper heart yearn, and it is made into telescopic spring shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290433.0U CN203951010U (en) | 2014-06-03 | 2014-06-03 | A kind of audio connecting cord with anti-jamming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290433.0U CN203951010U (en) | 2014-06-03 | 2014-06-03 | A kind of audio connecting cord with anti-jamming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203951010U true CN203951010U (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420290433.0U Expired - Fee Related CN203951010U (en) | 2014-06-03 | 2014-06-03 | A kind of audio connecting cord with anti-jamming circuit |
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| Country | Link |
|---|---|
| CN (1) | CN203951010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101926A (en) * | 2016-06-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal and printing board PCB thereof |
-
2014
- 2014-06-03 CN CN201420290433.0U patent/CN203951010U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101926A (en) * | 2016-06-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal and printing board PCB thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160328 Address after: 518100 Guangdong city of Shenzhen province Baoan District Xixiang street Baoan Road community Gushu Sanwei sand side industrial area A building 3 floor A Patentee after: Cang Mao Science and Technology Ltd. of Shenzhen Address before: 200000 Building No. 4, No. 200 East State Road, Shanghai, Yangpu District 421 Patentee before: Tu Zhenghui |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20170603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |