CN2591910Y - Adjustable volume earphone - Google Patents
Adjustable volume earphone Download PDFInfo
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- CN2591910Y CN2591910Y CN 02249706 CN02249706U CN2591910Y CN 2591910 Y CN2591910 Y CN 2591910Y CN 02249706 CN02249706 CN 02249706 CN 02249706 U CN02249706 U CN 02249706U CN 2591910 Y CN2591910 Y CN 2591910Y
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- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000005236 sound signal Effects 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000003321 amplification Effects 0.000 abstract description 14
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
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Abstract
The utility model relates to a pair of adjustable volume earphones, which comprises a head clamp, ear bases with loudspeakers inside, and an earphone line. The utility model is characterized in that the earphone line or one of the ear bases is provided with a volume adjuster. The volume adjuster comprises a casing, a circuit board, an adjusting circuit, an adjusting knob and a battery base. The adjusting circuit and the adjusting knob are arranged on the circuit board, and the adjusting circuit comprises a signal input terminal, the adjusting knob, an amplification circuit, a signal output terminal and a power supply, wherein, the signal input terminal, the adjusting knob, the amplification circuit, the signal output terminal and the power supply are connected into a work circuit through conductive wires. Because of the volume adjuster arranged on the earphone wire or the earphone base for adjusting and amplifying the sound source and improving the effect of the sound quality, the utility model can adjust and amplify the sound source, improve the stereo effect and improve the quality the of sound quality effectively. The utility model has the advantages of simple structure, small size, low cost, simple manufacturing technique, and convenient use. The utility model can be widely suitable for various walkmans.
Description
Technical field
The utility model relates to a kind of earphone, particularly a kind of earphone of scalable volume.
Background technology
At present, the source of sound of existing various earphones generally is the source of sound output from the various walkmans directly is sent to earphone by lead a loud speaker, does not connect any equipment therebetween to the audio processed; Therefore, ubiquity problems such as volume is little, stereophonic effect is poor, lower tone, signal to noise ratio is low, noise is bigger, can not satisfy people to clear, pure music demand.Have now a kind ofly to be provided with the earphone of simple volume adjuster, but the earphone of this structure is only turned control down to the volume of source of sound output the processing that can not amplify source of sound and improve tonequality, reduce the effect of noise at transfer wire.
Summary of the invention
The purpose of this utility model is to solve above-mentioned existing problems, providing a kind of can effectively regulate amplification, improve stereophonic effect, improve psycho-acoustical quality source of sound, and make things convenient for the earphone of use, handling ease, scalable volume that production cost is low, on this basis, the further purpose of the utility model is to provide a kind of and can selects the amplification of volume or the earphone of the tape-select switch of amplification of volume not as required.
The technical solution of the utility model is achieved in that
A kind of earphone of scalable volume, comprise head-clamp, in the ear seat of loud speaker is arranged, and earphone cord, its characteristics be on the described earphone cord or wherein an ear seat be provided with volume adjuster, described volume adjuster comprises housing, wiring board, regulating circuit, adjusting knob, battery tray, described regulating circuit, adjusting knob is arranged on the wiring board, and described regulating circuit comprises signal input part, adjusting knob, amplifying circuit, signal output part and power supply, wherein, described signal input part, adjusting knob, amplifying circuit, signal output part and power supply connect to form operating circuit by lead, and described wiring board and battery tray are installed in the housing.
Wherein, above-mentioned signal input part comprises L channel input LIN, R channel input RIN, described left and right sound channels input LIN, RIN are serially connected with adjustable resistance R7, the R8 that is used to regulate volume respectively, adjusting rod and the above-mentioned adjusting knob of described adjustable resistor R7, R8 link, its output is connected with the input of above-mentioned amplifying circuit, amplifies to amplifying circuit so that an audio signal to be provided.
The utility model circuit structure is simple, production cost is low and effective realization is amplified, improved stereophonic effect, improves psycho-acoustical quality source of sound in order to make, above-mentioned amplifying circuit comprises and is used for ic chip that audio signal is amplified, this ic chip can be the integrated IC chip of octal of various model audio signals amplifications, the output of its signal input pin and above-mentioned trimmable resistance R7, R8 links, its signal output pin and above-mentioned signal output part link, and its supply pin and above-mentioned power supply link.
In order to make the user can be conveniently select amplification of volume or amplification of volume not according to different needs, be connected with selector switch between above-mentioned signal input part, amplifying circuit and the signal output part, a wherein input of described switch and the output of last adjustable resistance R7, R8 link, the signal output pin of the above-mentioned ic chip of another input, and its output and signal output part link.
The utility model is owing to be provided with on earphone cord or earphone base source of sound is regulated amplification, improved the volume adjuster of acoustical quality, can be effectively regulate and amplify and improve stereoeffect, improve psycho-acoustical quality, solve that existing earpiece volume is little, the problem of lower tone etc. source of sound.Simultaneously, the utility model owing to be provided with in regulating circuit is selected the amplification of volume or the switch of amplification of volume not, further makes the advantage that the utlity model has needs easy to use, as to satisfy the different users.The utility model is simple in structure, volume is little, production cost is low, manufacturing process is simple, easy to use, can extensively be suitable on the various walkmans.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the utility model Headphone structure schematic diagram.
Fig. 2 is the utility model volume adjuster structural representation.
Fig. 3 is the utility model circuit block diagram.
Fig. 4 is the utility model circuit theory diagrams.
Embodiment
As shown in Figure 1, the utility model comprise head-clamp 1, in ear seat 2, and the earphone cord 3 of loud speaker are arranged, on the described earphone cord 3 or wherein an ear seat 2 is provided with volume adjuster, this volume adjuster can be arranged on earphone cord 3 by a housing with it, perhaps also can economize and remove housing, itself and described ear seat 2 are processed as one; As Fig. 1, shown in Figure 2, present embodiment adopts volume adjuster is arranged on the earphone cord 3 is structure, it comprises housing 4, wiring board, regulating circuit 5, adjusting knob 6, battery tray 7, described regulating circuit 5, adjusting knob 6 is arranged on the wiring board, for realizing that the audio signal of source of sound output is regulated amplification, shown in Figure 3 as circuit block diagram, described regulating circuit 5 comprises signal input part 51, adjusting knob 6, amplifying circuit 52, signal output part 53 and power supply 54, wherein, described signal input part 51, adjusting knob 6, amplifying circuit 52, signal output part 53 and power supply 54 connect to form operating circuit by lead, and described wiring board and battery tray 7 are installed in the housing 4.Shown in Figure 4 as circuit theory diagrams, described signal input part 51 comprises L channel input LIN, R channel input RIN, described left and right sound channels input LIN, RIN are serially connected with adjustable resistance R7, the R8 that is used to regulate volume respectively, adjusting rod and the above-mentioned adjusting knob 6 of described adjustable resistor R7, R8 link, its output is connected with the input of above-mentioned amplifying circuit 52, amplifies to amplifying circuit 53 so that an audio signal to be provided.Described amplifying circuit 52 comprises and is used for ic chip that audio signal is amplified, the output of its signal input pin and above-mentioned trimmable resistance R7, R8 links, its signal output pin and above-mentioned signal output part 53 link, and its supply pin and above-mentioned power supply 54 link.The utility model circuit structure is simple, production cost is low and effective realization is amplified, improved stereophonic effect, improves psycho-acoustical quality source of sound in order to make, above-mentioned ic chip is the octal integrated chip, it can be the integrated IC chip of the octal of TDA7050 model, also can be the integrated IC chip of the octal of TAD2822 model, perhaps the integrated IC chip of the octal of LM4810 model can be again, perhaps the integrated IC chip of the octal of KAE209 model can also be; Wherein, be serially connected with resistance R 3, the R4 that is used to play dividing potential drop, pressure stabilization function respectively on the lead between the output of above-mentioned adjustable resistance R7, R8 and the signal input pin 5 of above-mentioned ic chip, the pin 7, and also be serially connected with the resistance R 1, the R2 that are used to play dividing potential drop, pressure stabilization function between lead and the power supply, to provide a stabilization signal to ic chip.Above-mentioned signal output part 53 comprises L channel output LOUT and R channel output ROUT, wherein, described L channel output LOUT is connected with the signal output pin 3 of above-mentioned ic chip, and described R channel output ROUT is connected by the signal output pin 1 of the above-mentioned ic chip of lead.Be serially connected with between the signal output pin 1 of above-mentioned ic chip and the supply pin 4 be used for oscillation-damped, protection ic chip be connected in series the protective circuit that forms by capacitor C 2, resistance R 6.Be connected with between the signal output pin 3 of above-mentioned ic chip and the supply pin 4 be used for oscillation-damped, protection ic chip be connected in series the filter circuit that forms by capacitor C 1, resistance R 5.In order to make the user can be conveniently select amplification of volume or amplification of volume not according to different needs, connect by selector switch 55 between above-mentioned signal input part 51 and the signal output part 53, this selector switch 55 comprises K switch 2, K switch 3, the input of described K switch 2, K3 links with the output of adjustable resistance R7, R8 respectively, its another input links with the signal output pin 1,3 of above-mentioned ic chip respectively, and its output links with left and right sound channels output LOUT, ROUT respectively.
Claims (9)
1, a kind of earphone of scalable volume, comprise head-clamp (1), in the ear seat (2) of loud speaker is arranged, and earphone cord (3), it is characterized in that described earphone cord (3) is gone up or wherein an ear seat (2) be provided with volume adjuster, described volume adjuster comprises housing (4), wiring board, regulating circuit (5), adjusting knob (6), battery tray (7), described regulating circuit (5), adjusting knob (6) is arranged on the wiring board, and described regulating circuit (5) comprises signal input part (51), adjusting knob (6), amplifying circuit (52), signal output part (53) and power supply (54), wherein, described signal input part (51), adjusting knob (6), amplifying circuit (52), signal output part (53) and power supply (54) connect to form operating circuit by lead, and described wiring board and battery tray (7) are installed in the housing (4).
2, according to the earphone of the described scalable volume of claim 1, it is characterized in that above-mentioned signal input part (51) comprises L channel input LIN, R channel input RIN, described left and right sound channels input LIN, RIN are serially connected with adjustable resistance R7, the R8 that is used to regulate volume respectively, the adjusting rod of described adjustable resistor R7, R8 and above-mentioned adjusting knob (6) link, its output is connected with the input of above-mentioned amplifying circuit (52), amplifies to amplifying circuit (53) so that an audio signal to be provided.
3, according to the earphone of the described scalable volume of claim 2, it is characterized in that above-mentioned amplifying circuit (52) comprises is used for ic chip that audio signal is amplified, the output of its signal input pin and above-mentioned trimmable resistance R7, R8 links, its signal output pin and above-mentioned signal output part (53) link, and its supply pin and above-mentioned power supply (54) link.
4, according to the earphone of the described scalable volume of claim 3, it is characterized in that above-mentioned ic chip is the octal integrated chip, its model is the integrated chip of TDA7050 model or TAD2822 model or LM4810 model or KAE209 model.
5, according to the earphone of claim 3 or 4 described scalable volumes, it is characterized in that being serially connected with resistance R 3, the R4 that is used to play dividing potential drop, pressure stabilization function respectively on the signal input pin 5, the lead between the pin 7 of the output of above-mentioned adjustable resistance R7, R8 and above-mentioned ic chip, and also be serially connected with the resistance R 1, the R2 that are used to play dividing potential drop, pressure stabilization function between lead and the power supply, to provide a stabilization signal to ic chip.
6, according to the earphone of the described scalable volume of claim 3, it is characterized in that above-mentioned signal output part (53) comprises L channel output LOUT and R channel output ROUT, wherein, described L channel output LOUT is connected with the signal output pin 3 of above-mentioned ic chip, and described R channel output ROUT is connected by the signal output pin 1 of the above-mentioned ic chip of lead.
7, according to the earphone of the described scalable volume of claim 6, be serially connected with between the signal output pin 1 that it is characterized in that above-mentioned ic chip and the supply pin 4 be used for oscillation-damped, protection ic chip be connected in series the protective circuit that forms by capacitor C 2, resistance R 6.
8, according to the earphone of claim 6 or 7 described scalable volumes, be connected with between the signal output pin 3 that it is characterized in that above-mentioned ic chip and the supply pin 4 be used for oscillation-damped, protection ic chip be connected in series the filter circuit that forms by capacitor C 1, resistance R 5.
9, according to claim 1 or 3 or 4 or the earphone of 6 or 7 described scalable volumes, it is characterized in that connecting by selector switch (55) between above-mentioned signal input part (51) and the signal output part (53), this selector switch (55) comprises K switch 2, K switch 3, the input of described K switch 2, K3 links with the output of adjustable resistance R7, R8 respectively, its another input links with the signal output pin 1,3 of above-mentioned ic chip respectively, and its output links with left and right sound channels output LOUT, ROUT respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249706 CN2591910Y (en) | 2002-11-22 | 2002-11-22 | Adjustable volume earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02249706 CN2591910Y (en) | 2002-11-22 | 2002-11-22 | Adjustable volume earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591910Y true CN2591910Y (en) | 2003-12-10 |
Family
ID=33720082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02249706 Expired - Fee Related CN2591910Y (en) | 2002-11-22 | 2002-11-22 | Adjustable volume earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2591910Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103118312A (en) * | 2013-01-31 | 2013-05-22 | 苏州恒听电子有限公司 | Impedance-adjustable receiver |
| CN102647647B (en) * | 2006-03-24 | 2014-10-29 | 森海泽电子两合公司 | Earphone and volume regulating unit |
| CN104883640A (en) * | 2014-02-27 | 2015-09-02 | 鸿富锦精密工业(武汉)有限公司 | Audio player |
| CN106303830A (en) * | 2016-09-12 | 2017-01-04 | 北京小米移动软件有限公司 | Volume adjustment method and device |
| CN106453838A (en) * | 2016-09-12 | 2017-02-22 | 北京小米移动软件有限公司 | Method and apparatus for adjusting volume |
| CN109275068A (en) * | 2018-08-27 | 2019-01-25 | 出门问问信息科技有限公司 | A kind of audio output circuit and equipment |
-
2002
- 2002-11-22 CN CN 02249706 patent/CN2591910Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647647B (en) * | 2006-03-24 | 2014-10-29 | 森海泽电子两合公司 | Earphone and volume regulating unit |
| CN103118312A (en) * | 2013-01-31 | 2013-05-22 | 苏州恒听电子有限公司 | Impedance-adjustable receiver |
| CN104883640A (en) * | 2014-02-27 | 2015-09-02 | 鸿富锦精密工业(武汉)有限公司 | Audio player |
| CN106303830A (en) * | 2016-09-12 | 2017-01-04 | 北京小米移动软件有限公司 | Volume adjustment method and device |
| CN106453838A (en) * | 2016-09-12 | 2017-02-22 | 北京小米移动软件有限公司 | Method and apparatus for adjusting volume |
| CN106453838B (en) * | 2016-09-12 | 2019-11-08 | 北京小米移动软件有限公司 | Volume adjustment method and device |
| CN109275068A (en) * | 2018-08-27 | 2019-01-25 | 出门问问信息科技有限公司 | A kind of audio output circuit and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |