CN104703102A - Sound pressure output device of moving iron unit - Google Patents
Sound pressure output device of moving iron unit Download PDFInfo
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- CN104703102A CN104703102A CN201510073751.0A CN201510073751A CN104703102A CN 104703102 A CN104703102 A CN 104703102A CN 201510073751 A CN201510073751 A CN 201510073751A CN 104703102 A CN104703102 A CN 104703102A
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- iron unit
- pressure output
- output device
- conduit
- acoustic pressure
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Abstract
The invention discloses a sound pressure output device of a moving iron unit. The sound pressure output device of the moving iron unit comprises a shell, a connecting bar vibrating plate, a magnetic loop and a cloth net, the shell is sealed, the shell comprises a conduit, an upper shell and a lower shell, the upper shell and lower shell are connected with the conduit, the conduit is located at the front end of a hollow cavity formed by the upper shell and lower shell, both the vibrating plate and magnetic loop are located in the hollow cavity formed by the upper shell and lower shell, the vibrating piece is connected with the magnetic loop through a connecting bar, the cloth net is arranged in the conduit, the cloth net is located on the cross section of the conduit, and a plurality of small holes are distributed in the cloth net. Through said mode, the sound pressure output device of the moving iron unit provides the moving iron unit sound pressure output improving device according to the disadvantage that the moving iron unit influences the actual use of the customer due to the large sound pressure output at the resonant frequency point.
Description
Technical field
The present invention relates to a kind of dynamic iron unit modifying device, particularly relate to a kind of dynamic iron unit acoustic pressure output device.
Background technology
In dynamic iron unit, conduit is very important parts, and its sealing ensure that the stable and consistent that acoustic pressure exports, and combines closely with the external structure of dynamic iron unit simultaneously, ensure voice output directly receive by people's ear, the amplitude of middle decay is less.In traditional catheter design, it is size design mainly, if the overall length and width of conduit outside are by the size restrictions of dynamic iron unit main body, ensure that it is fixed on the end face of dynamic iron unit, can ensure overall sealing effectively, reliably when sealing; Simultaneously the extension of conduit limits by the design of outside appurtenances, and the outside dimension of extension and length need coordinate consistent with the voice guide hole of outside appurtenances.But the design of conduit never relates to the acoustic pressure how improving dynamic iron unit exports this key problem.
In dynamic iron unit, the vibrating reed of its vibrating mass is the metal material of iron-nickel alloy, and its resonance frequency meets the following formula of general physical characteristic:
Wherein K is the coefficient of elasticity of vibrating reed, and m is the quality of vibrating reed.In this specific frequency, when the frequency of external drive is identical with the natural frequency of vibrating reed, amplitude can reach maximum, will be as shown in Figure 1 in the form of expression of voice output.To between resonance frequency after 1000Hz, acoustic pressure exports and increases gradually, reaches acoustic pressure and exports maximum, then reduce gradually to resonance frequency point.
Live in application normally at us, vibrating reed this characteristic at resonance frequency place can bring certain interference to the application of dynamic iron unit, for example when music appreciating, we are it is desirable that smoother consistent acoustic pressure exports, instead of certain Frequency point and near, it is comparatively large that its acoustic pressure exports other frequency increases relatively, causes ear-piercing sensation; In the field of acoustics such as hearing aids and monitor, clients different equally exports lofty change to the acoustic pressure that this intrinsic physical characteristic is brought stronger improvement demand.
Summary of the invention
The technical problem that the present invention mainly solves how to provide a kind of dynamic iron unit acoustic pressure output device, exports comparatively large, affect the shortcoming of the actual use of client for dynamic iron unit in resonance frequency point acoustic pressure, provides a kind of device improving dynamic iron unit acoustic pressure and export.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of dynamic iron unit acoustic pressure output device, comprise: shell, connecting rod vibrating reed, magnetic circuit and arranging net, described shell is sealing, described shell includes conduit, upper casing and lower casing, described upper casing, lower casing is connected with conduit respectively, and conduit is positioned at the cavity front end that described upper casing and lower casing are formed, described vibrating reed, magnetic circuit is all positioned at the cavity that described upper casing and lower casing are formed, and described vibrating reed and magnetic circuit are interconnected by connecting rod, described catheter interior is provided with arranges net, described arranging net is positioned on the cross section of conduit, and described cloth has some apertures on the net.
In a preferred embodiment, described upper casing is provided with sound hole, described sound hole communicates with conduit.
In a preferred embodiment, described dynamic iron unit acoustic pressure output device has vibrating diaphragm, and described vibrating diaphragm is connected with connecting rod, and vibrating diaphragm and upper casing form cavity.
In a preferred embodiment, described magnetic circuit includes coil, yoke and magnet, and described magnet is positioned at the top plane of yoke, and magnet is all connected with coil with the end face of yoke.
In a preferred embodiment, described vibrating reed is " U " type, and described vibrating reed side is connected with magnetic circuit, and opposite side is positioned at the cavity with connecting rod homonymy.
In a preferred embodiment, the shape of described aperture is: one or more in square, rectangle, triangle or circle.
The invention has the beneficial effects as follows: export in resonance frequency point acoustic pressure comparatively large for dynamic iron unit, affect the shortcoming of the actual use of client, a kind of device improving dynamic iron unit acoustic pressure and export is provided.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the acoustic pressure output waveform figure of dynamic iron unit in prior art;
Fig. 2 is the structure chart of dynamic iron unit acoustic pressure output device one preferred embodiment in the present invention;
Fig. 3 is dynamic iron unit acoustic pressure output device one preferred embodiment acoustic pressure output waveform figure compared with prior art in the present invention.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-3, a kind of dynamic iron unit acoustic pressure output device is provided in one particular embodiment of the present invention, described dynamic iron unit acoustic pressure output device comprises: shell 1, connecting rod 2, vibrating reed 3, vibrating diaphragm 4, magnetic circuit 5, sound hole 6 and arrange net 7, described shell 1 is sealing, described shell 1 includes conduit 101, upper casing 102 and lower casing 103, described upper casing 102, lower casing 103 is connected with conduit 101 respectively, and conduit 101 is positioned at the cavity front end that described upper casing 102 is formed with lower casing 103, described sound hole 6 is positioned on described upper casing 102, and described sound hole 6 communicates with conduit 101, described vibrating diaphragm 4 is connected with connecting rod 2, and vibrating diaphragm 4 and upper casing 102 form cavity.Described vibrating reed 3, magnetic circuit 5 are all positioned at the cavity that described upper casing 102 is formed with lower casing 103, and described vibrating reed 3 and magnetic circuit 5 are interconnected by connecting rod 2.Described magnetic circuit 5 includes coil 501, yoke 502 and magnet 503, and described magnet 503 is positioned at the top plane of yoke 502, and magnet 503 is all connected with coil 501 with the end face of yoke 502.Described arranging net 7 is positioned on the cross section of conduit 101, and described in arrange net on 7 and have some apertures 701, the shape of described aperture 701 is: one or more in square, rectangle, triangle or circle, described vibrating reed 3 is " U " type, and described vibrating reed 3 side is connected with magnetic circuit 5, opposite side is positioned at the cavity with connecting rod 2 homonymy.
That is, in a particular embodiment, the inside of conduit 101 adds arranges net 7 together, arrange net and 7 be above designed to aperture 701 shape according to actual needs, the quantity of aperture 701 is determined according to the demand of actual client, it exports resonance frequency section acoustic pressure and requires the more of reduction, then the quantity of aperture 701 is more, and aperture is less.Arrange net and to punch that it mainly plays the effect of damping on 7, when gas from thick pipeline by time, due in the middle of extra heavy pipe road, aperture 701 or micropore have been installed, rate of flow of fluid are slowed down, flow reduces, and play damping action, the shape of aperture 701 is not limited to, square, rectangle, triangle, circular grade all can.
Concrete operation principle is: wherein upper casing 102 and vibrating diaphragm 4 form the cavity that acoustic pressure exports, upper casing 102 is offered sound hole 6, acoustic pressure enters in conduit 101 by sound hole 6 when exporting, and the shell 1 that conduit 101 and upper casing 102, lower casing 103 form needs to seal, to ensure the consistency that acoustic pressure exports.During receiver work, by coil 501, yoke 502, the magnetic circuit 5 that magnet 503 forms drives vibrating reed 3 up-down vibration under the effect of ac-excited signal, the vibration of vibrating reed 3 is delivered on vibrating diaphragm 4 by connecting rod 2, and the vibration back and forth of vibrating diaphragm 4 produces acoustic pressure and exports.Arrange net and 7 be placed in conduit 101, by arrange net 7 damping to the formant regulating acoustic pressure to export.
In figure 3, curve A is existing design, and curve B is added the acoustic pressure after 7 of arranging net to export, and main only output two formant acoustic pressures is improved, and other frequency band acoustic pressure does not change.
Therefore, the invention has the beneficial effects as follows: export in resonance frequency point acoustic pressure comparatively large for dynamic iron unit, affect the shortcoming of the actual use of client, a kind of device improving dynamic iron unit acoustic pressure and export is provided.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a dynamic iron unit acoustic pressure output device, it is characterized in that, comprise: shell (1), connecting rod (2) vibrating reed (3), magnetic circuit (5) and arrange net (7), described shell is sealing, described shell includes conduit (101), upper casing (102) and lower casing (103), described upper casing, lower casing is connected with conduit respectively, and conduit is positioned at the cavity front end that described upper casing and lower casing are formed, described vibrating reed, magnetic circuit is all positioned at the cavity that described upper casing and lower casing are formed, and described vibrating reed and magnetic circuit are interconnected by connecting rod, described catheter interior is provided with arrange net (7), described arranging net is positioned on the cross section of conduit, and described cloth has some apertures (701) on the net.
2. dynamic iron unit acoustic pressure output device according to claim 1, it is characterized in that, described upper casing is provided with sound hole (6), described sound hole communicates with conduit.
3. dynamic iron unit acoustic pressure output device according to claim 1, is characterized in that, described dynamic iron unit acoustic pressure output device has vibrating diaphragm (4), and described vibrating diaphragm is connected with connecting rod, and vibrating diaphragm and upper casing form cavity.
4. dynamic iron unit acoustic pressure output device according to claim 1, it is characterized in that, described magnetic circuit includes coil (501), yoke (502) and magnet (503), and described magnet is positioned at the top plane of yoke, and magnet is all connected with coil with the end face of yoke.
5. dynamic iron unit acoustic pressure output device according to claim 1, it is characterized in that, described vibrating reed is " U " type, and described vibrating reed side is connected with magnetic circuit, and opposite side is positioned at the cavity with connecting rod homonymy.
6. dynamic iron unit acoustic pressure output device according to claim 1, it is characterized in that, the shape of described aperture is: one or more in square, rectangle, triangle or circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073751.0A CN104703102A (en) | 2015-02-12 | 2015-02-12 | Sound pressure output device of moving iron unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073751.0A CN104703102A (en) | 2015-02-12 | 2015-02-12 | Sound pressure output device of moving iron unit |
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| Publication Number | Publication Date |
|---|---|
| CN104703102A true CN104703102A (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510073751.0A Pending CN104703102A (en) | 2015-02-12 | 2015-02-12 | Sound pressure output device of moving iron unit |
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| CN (1) | CN104703102A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105228048A (en) * | 2015-10-14 | 2016-01-06 | 苏州赫里翁电子科技有限公司 | A kind of Novel receiver vibrating reed |
| CN106341762A (en) * | 2016-08-31 | 2017-01-18 | 苏州倍声声学技术有限公司 | Packaged guide tube structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4450930A (en) * | 1982-09-03 | 1984-05-29 | Industrial Research Products, Inc. | Microphone with stepped response |
| US4815560A (en) * | 1987-12-04 | 1989-03-28 | Industrial Research Products, Inc. | Microphone with frequency pre-emphasis |
| US5193116A (en) * | 1991-09-13 | 1993-03-09 | Knowles Electronics, Inc. | Hearing and output transducer with self contained amplifier |
| CN1130459A (en) * | 1993-09-01 | 1996-09-04 | 诺尔斯电子有限公司 | Receiver for hearing aid |
| CN1969590A (en) * | 2004-06-14 | 2007-05-23 | 美商楼氏电子有限公司 | Magnet assembly for a transducer |
| CN203492176U (en) * | 2013-10-16 | 2014-03-19 | 衡阳加一电子科技有限公司 | Headphone |
| CN204465859U (en) * | 2015-02-12 | 2015-07-08 | 苏州赫里翁电子科技有限公司 | A kind of dynamic iron unit acoustic pressure output device |
-
2015
- 2015-02-12 CN CN201510073751.0A patent/CN104703102A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450930A (en) * | 1982-09-03 | 1984-05-29 | Industrial Research Products, Inc. | Microphone with stepped response |
| US4815560A (en) * | 1987-12-04 | 1989-03-28 | Industrial Research Products, Inc. | Microphone with frequency pre-emphasis |
| US5193116A (en) * | 1991-09-13 | 1993-03-09 | Knowles Electronics, Inc. | Hearing and output transducer with self contained amplifier |
| CN1130459A (en) * | 1993-09-01 | 1996-09-04 | 诺尔斯电子有限公司 | Receiver for hearing aid |
| CN1969590A (en) * | 2004-06-14 | 2007-05-23 | 美商楼氏电子有限公司 | Magnet assembly for a transducer |
| CN203492176U (en) * | 2013-10-16 | 2014-03-19 | 衡阳加一电子科技有限公司 | Headphone |
| CN204465859U (en) * | 2015-02-12 | 2015-07-08 | 苏州赫里翁电子科技有限公司 | A kind of dynamic iron unit acoustic pressure output device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105228048A (en) * | 2015-10-14 | 2016-01-06 | 苏州赫里翁电子科技有限公司 | A kind of Novel receiver vibrating reed |
| CN106341762A (en) * | 2016-08-31 | 2017-01-18 | 苏州倍声声学技术有限公司 | Packaged guide tube structure |
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Application publication date: 20150610 |