CN200956660Y - Loudspeaker with short circuit structure - Google Patents
Loudspeaker with short circuit structure Download PDFInfo
- Publication number
- CN200956660Y CN200956660Y CN 200620124616 CN200620124616U CN200956660Y CN 200956660 Y CN200956660 Y CN 200956660Y CN 200620124616 CN200620124616 CN 200620124616 CN 200620124616 U CN200620124616 U CN 200620124616U CN 200956660 Y CN200956660 Y CN 200956660Y
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- China
- Prior art keywords
- short
- loop
- short circuit
- voice coil
- loud speaker
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- Expired - Lifetime
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Abstract
The utility model provides a loudspeaker with a short circuit structure comprising a T shaped iron, a sound ring, a nipping plate, a patch board, a support and a short circuit loop. The short circuit loop reels on a central column of the T shaped iron to form an in dependent loop which is connected with a variable resistance in series. With the reeling structure of the short circuit loop, the utility model can reduce the loop thickness and has little influence on the sensitivity of the unit. The upper and lower position of the short circuit loop on the T shaped iron core column and the loop size are easy to control, which are more flexible compared with the traditional short circuit copper loop. Resistances of different resistant values are linked to adjust the total effective inductance of the unit, the optimized adjustment of the inductance effectively reduces the distortion and the high frequency impedance characteristic of the loudspeaker unit can be adjusted according to the requirements to obtain different sound quality effects.
Description
Technical field
The utility model relates to a kind of microphone device, is meant a kind of loud speaker that can effectively avoid the band short-circuit structure of distortion especially.
Background technology
Do not add short-circuited conducting sleeve on the T iron of early stage loud speaker, when feeding signal code in the voice coil loudspeaker voice coil, the signal code of alternation can produce alternating magnetic fields, is superimposed upon in the static magnetic field of original magnetic circuit system generation, field drives power is changed, thereby make loudspeaker unit produce distortion.Adding the short circuit copper ring in magnetic circuit system is the common method of improving the loudspeaker unit distortion, after having added short-circuited conducting sleeve, because electromagnetic conversion, alternating magnetic field can produce reverse alternating current again in short-circuited conducting sleeve, thereby produce reverse alternating magnetic field, offset the alternating magnetic field that a part of signal code produces, make the total magnetic field keep stable.But the voice coil loudspeaker voice coil inductance is not to reduce the smaller the betterly yet; relate to the problem that is complementary with magnetic circuit system; and in design process; the designer ignores matching problem between short circuit copper ring and the magnetic circuit through regular meeting; perhaps, make the back inconvenience in product design the short circuit copper ring is adjusted because loadspeaker structure limits.
The result of study of Germany Klippel company shows: short circuit copper ring and magnetic circuit system just do not reach the purpose of improving distortion if coupling is bad, even can make distortion become big.As shown in Figure 2, typical ventional loudspeakers inductance is wherein curve a with the amplitude shift curve, loudspeaker unit voice coil loudspeaker voice coil magnetic property owing to air when jumping out T iron newel apical position reduces than official post unit inductance, and entering T iron newel apical position when following, because the magnetic conductivity of T iron better makes the unit inductance rise.In this case, the inductance displacement curve is non-linear causes the loudspeaker unit distortion obvious more greatly.After adding short-circuit ring structure, the inductance of voice coil loudspeaker voice coil in the T iron mould is enclosed the time will reduce, thereby the overall average inductance is reduced.But inductance is not the smaller the better yet, relate to matching problem with magnetic circuit, inductance value when the short circuit copper ring makes voice coil loudspeaker voice coil in the T iron mould is enclosed reduces can occur on the contrary too much the excessive problem of inductance compensation, promptly shown in curve c among Fig. 2, though total average inductance is little, but because the asymmetry of inductance curve can cause loudspeaker unit harmonic distortion equally.Desirable short-circuited conducting sleeve effect should be shown in curve b among Fig. 2, and inductance had both had symmetry with displacement curve, and is also more smooth.
Shown in Figure 3 is the electromagnetic driver structure of No. 03232390.5 disclosed a kind of low inductance of Chinese patent ZL, and in this structure, bucking coil is connected with voice coil loudspeaker voice coil, and both reverse coilings, to reach the purpose that reduces loudspeaker unit effective inductance amount.But this bucking coil is connected with voice coil loudspeaker voice coil and is inserted the structure of signal circuit, because bucking coil itself has D.C. resistance, behind input signal, also can produce power consumption on the bucking coil, reduce it and regulated the effect of loudspeaker unit inductance, can't realize minimizing of unit distortion.
The utility model content
Technical problem to be solved in the utility model is: a kind of loud speaker with short-circuit structure is provided, and it can effectively avoid distortion, improves loud speaker tonequality.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of loud speaker with short-circuit structure is provided, comprises T shape iron, voice coil loudspeaker voice coil, clamping plate, terminal block, basin frame and short-circuited coil.Described short-circuited coil is wound on the newel of described T shape iron and forms independently loop.
Further improvement in the technical proposal is: described short-circuited coil also is in series with resistance in the loop.
Further improvement in the technical proposal is: described resistance is variable resistor.
The beneficial effects of the utility model are:
1, common short circuit copper ring structure need be mated with reference to sample size is strict, and thickness is thicker, and element sensitivity is declined by a big margin, and the utility model can reduce thickness owing to adopt the short-circuited coil of winding structure, and is little to the element sensitivity influence;
2, upper-lower position and the coil width of short-circuited coil on the T iron core column is easy to control, compare with traditional short circuit copper ring and to have more flexibility, and can insert the different resistance of resistance and realize that the total effective inductance in unit is adjustable, by optimizing and revising of inductance, can effectively reduce distortion, and make loudspeaker unit medium-high frequency impedance operator to adjust as required, obtain different acoustical qualities.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the unit section figure of the loud speaker of the utility model band short-circuit structure.
Fig. 2 is that existing ventional loudspeakers unit is at the curve chart of band short-circuited conducting sleeve front and back inductance with amplitude variations.
Fig. 3 is the electromagnetic driver structure chart of No. 03232390.5 disclosed a kind of low inductance of Chinese patent ZL.
Embodiment
As shown in Figure 1, the utility model provides a kind of loud speaker with short-circuit structure, comprises voice coil loudspeaker voice coil 1, short-circuited coil 2, adjustable resistance 3, T iron 4, train wheel bridge 5, terminal block 6, basin frame 7.
The structure of voice coil loudspeaker voice coil 1 of the present utility model, T iron 4, train wheel bridge 5, terminal block 6, basin frame 7 and the corresponding construction of ventional loudspeakers are similar substantially, seldom give unnecessary details at this.Main feature of the present utility model is: be enclosed within described short-circuited coil 2 on T iron 4 stem stems and be arranged on the inboard of voice coil loudspeaker voice coil 3, and make it form independently loop; In addition, also can be according to the needs of different tonequality product designs, adjustable resistance 3 of series connection in the loop of short-circuited coil 2, adjustable resistance 3 is fixed on the basin frame 7.
Short-circuited coil 2 is wound on the coiling trend on T iron 4 stem stems and has no special requirements, with voice coil loudspeaker voice coil around all can to identical or different.Short-circuited coil is connected with adjustable resistance, short-circuit line astragal footpath can freely be selected, generally get the line identical with voice coil loudspeaker voice coil and directly get final product, short-circuited coil is looked the actual loudspeaker product design at vertically-arranged up and down, the winding width of T iron core column and need and be determined that general winding width is not more than the winding width of drive coil.The utility model does not have specific (special) requirements (the capacitive perception of adjustable resistance does not exert an influence to the inductance of loudspeaker unit) to adjustable resistance yet, because short-circuited coil does not insert the signal of telecommunication, the inductance measurement of loud speaker is the inductance on the voice coil loudspeaker voice coil, the series connection adjustable resistance changes on the short-circuited coil is eddy current in the short-circuited coil, changes the inductance size that drives voice coil loudspeaker voice coil thereby adjust the short circuit effect thus.Adjustable resistance can be realized with the slide rheostat of 0 Ω-20 Ω, perhaps speaker designer several resistance values of getting optimization at specific loudspeaker unit realize that with diverter switch resistance is adjustable, resistance is fixed on the basin frame 7, obtains different tonequality by regulating resistance sizes.
Adopt the loud speaker MLSSA of testing software that result such as following table are tested in the voice coil loudspeaker voice coil impedance of the loud speaker of existing ventional loudspeakers, existing band short circuit copper ring structure of loudspeaker and the utility model band short-circuit structure:
| Speaker types | Voice coil loudspeaker voice coil impedance (Ω) during 20KHz | Voice coil loudspeaker voice coil D.C. resistance (Ω) | Voice coil loudspeaker voice coil inductance (mH) |
| Ventional loudspeakers | 35 | 3.7 | 0.28 |
| The loud speaker of band short-circuited conducting sleeve | 12.5 | 3.7 | 0.095 |
| The loud speaker of band short-circuited coil | 214 | 3.7 | 0.11 |
| Loud speaker when short-circuited coil is connected 6 Ω resistance | 24 | 3.7 | 0.19 |
| Loud speaker when short-circuited coil is connected 20 Ω resistance | 30 | 3.7 | 0.24 |
By test result as can be seen, loudspeaker unit is calculated inductance 0.11mH, and is few with band short circuit copper ring loudspeaker unit inductance 0.095mH weak effect.Along with the increase of the resistance value of connecting with short-circuited coil, it is big that the loudspeaker unit inductance also becomes gradually, is equivalent to the effect of the ordinary construction loud speaker of not being with short-circuited conducting sleeve at last.This explanation series connection one adjustable resistance on short-circuited coil can be adjusted the loudspeaker unit inductance, and then can make the loudspeaker unit effective inductance reach optimization by contrast test, finds the optimum structure that effectively reduces the unit distortion.
As from the foregoing, the utility model not only has the advantage of existing band short circuit copper ring loud speaker, can also adjust position and the coil width of short-circuited coil on the T iron core column flexibly, and adjust the size of voice coil loudspeaker voice coil inductance by the resistance of regulating the adjustable resistance connect with short-circuited coil, reach the purpose that reduces the loudspeaker unit distortion, improves loudspeaker unit medium-high frequency impedance operator, obtain the different acoustical quality of loud speaker thus.
Claims (7)
1, a kind of loud speaker with short-circuit structure comprises T shape iron, voice coil loudspeaker voice coil, clamping plate, terminal block, basin frame, it is characterized in that: also comprise a short-circuited coil, described short-circuited coil is wound on the newel of described T shape iron and forms independently loop.
2, the loud speaker of band short-circuit structure as claimed in claim 1 is characterized in that: described short-circuited coil also is in series with resistance in the loop.
3, the loud speaker of band short-circuit structure as claimed in claim 1 or 2 is characterized in that: described short-circuited coil is positioned at the voice coil loudspeaker voice coil inboard.
4, the loud speaker of band short-circuit structure as claimed in claim 2 is characterized in that: described resistance is fixed on the basin frame.
5, as the loud speaker of claim 2 or 4 described band short-circuit structures, it is characterized in that: described resistance is variable resistor.
6, the loud speaker of band short-circuit structure as claimed in claim 1 is characterized in that: described short-circuited coil around to different with the voice coil loudspeaker voice coil direction.
7, the loud speaker of band short-circuit structure as claimed in claim 1 is characterized in that: described short-circuited coil around to identical with the voice coil loudspeaker voice coil direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124616 CN200956660Y (en) | 2006-06-30 | 2006-06-30 | Loudspeaker with short circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124616 CN200956660Y (en) | 2006-06-30 | 2006-06-30 | Loudspeaker with short circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200956660Y true CN200956660Y (en) | 2007-10-03 |
Family
ID=38775241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620124616 Expired - Lifetime CN200956660Y (en) | 2006-06-30 | 2006-06-30 | Loudspeaker with short circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200956660Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060748A (en) * | 2016-06-07 | 2016-10-26 | 寻乌县爱馨泰电子商贸有限公司 | Voice coil adjusting device for loudspeaker |
| CN106878888A (en) * | 2017-04-10 | 2017-06-20 | 张妍婷 | Induct dynamic speaker |
| CN107534814A (en) * | 2016-04-19 | 2018-01-02 | 有限会社森山铭木 | The tone quality improving method of speaker unit and speaker unit |
| WO2021003602A1 (en) * | 2019-07-05 | 2021-01-14 | 瑞声声学科技(深圳)有限公司 | Actuator |
| CN116980800A (en) * | 2023-09-25 | 2023-10-31 | 苏州墨觉智能电子有限公司 | Magnetic circuit assembly, bone conduction sounding device and bone conduction earphone |
-
2006
- 2006-06-30 CN CN 200620124616 patent/CN200956660Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107534814A (en) * | 2016-04-19 | 2018-01-02 | 有限会社森山铭木 | The tone quality improving method of speaker unit and speaker unit |
| CN107534814B (en) * | 2016-04-19 | 2020-09-08 | 有限会社森山铭木 | Speaker device and method for improving sound quality of speaker device |
| CN106060748A (en) * | 2016-06-07 | 2016-10-26 | 寻乌县爱馨泰电子商贸有限公司 | Voice coil adjusting device for loudspeaker |
| CN106060748B (en) * | 2016-06-07 | 2019-05-03 | 寻乌县爱馨泰电子商贸有限公司 | A kind of loudspeaker voice coil adjustment device |
| CN106878888A (en) * | 2017-04-10 | 2017-06-20 | 张妍婷 | Induct dynamic speaker |
| CN106878888B (en) * | 2017-04-10 | 2019-07-30 | 南京俏声波动科技有限公司 | Induct dynamic speaker |
| WO2021003602A1 (en) * | 2019-07-05 | 2021-01-14 | 瑞声声学科技(深圳)有限公司 | Actuator |
| CN116980800A (en) * | 2023-09-25 | 2023-10-31 | 苏州墨觉智能电子有限公司 | Magnetic circuit assembly, bone conduction sounding device and bone conduction earphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071003 |
|
| EXPY | Termination of patent right or utility model |