CN104301842A - Electroacoustic transducer with impact protection function - Google Patents
Electroacoustic transducer with impact protection function Download PDFInfo
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- CN104301842A CN104301842A CN201410523326.2A CN201410523326A CN104301842A CN 104301842 A CN104301842 A CN 104301842A CN 201410523326 A CN201410523326 A CN 201410523326A CN 104301842 A CN104301842 A CN 104301842A
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- surge protection
- electroacoustic transducer
- transducer
- leg
- vibrating membrane
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Abstract
The invention discloses an electroacoustic transducer with the impact protection function. The electroacoustic transducer comprises a transducer shell, a magnetic assembly, a vibration film, a motor assembly and an impact protection element. The volume and the inner surface are limited through the transducer shell which provides a cavity for the electroacoustic transducer; the magnetic assembly comprises a pair of drive magnets and a pair of magnet yokes distributed on the outer sides of the drive magnets and connected with the drive magnets; part of the vibration film is fixed to the inner wall of the shell; the motor assembly comprises a coil body, a spring leaf and a connecting piece, the spring leaf is divided into a fixed leg, a movable leg and connecting end, the fixed leg of the spring leaf is fixed to the outer side of the magnet yokes, and the movable leg is connected with the vibration film through the connecting piece; the impact protection element comprises a first impact protection part and a second impact protection part which are asymmetrically arranged, symmetry accuracy does not need to be considered in coil wire winding mold design, a high-symmetry-degree auxiliary assembling mold is not needed when the transducer is assembled, design cost is greatly reduced, and meanwhile the quality of a product is greatly improved.
Description
Technical field
The present invention relates to electroacoustic transducer, relate more specifically to a kind of electroacoustic transducer of the loading effect that is not hit.
Background technology
When transducer in use drops to ground or is subject to fiercely rocking; its inner reed being used for power conversion will be subject to great instantaneous impact and produce motion; if do not have surge protection reed will be excessive and produce permanent deformation due to motion amplitude, cause that transducer sensitivity reduces, distortion increases.
Existing transducer surge protection is symmetric design.Glue is added, drying forming in winding mould by during coil-winding.Due to this symmetric form surge protection, for the available protecting reed when being hit, need the design of the surge protection of coil winding mold to have the symmetry of height, high to the mould of plastics forming requirements of coil-winding, cost is very high.Meanwhile, also need the auxiliary assembly jig of high symmetrical precision in transducer production process, require high to the plastic rubber shaping of assembly jig, cost is very high.Finished transducer can assemble the uncontrollable change of processing procedure due to this, causes the bad and monolateral interference of symmetry of assembling to cause different sound, affects transducer quality.
Summary of the invention
The present invention provides a kind of electroacoustic transducer with Asymmetric Shocks protection to solve deficiency of the prior art; coil winding mold design is without the need to considering symmetrical precision; the auxiliary assembly jig of high symmetry is not needed during transducer assembling; very big reduction design cost, the simultaneously quality of improving product greatly.
For achieving the above object, the technical solution used in the present invention is:
There is an electroacoustic transducer for surge protection, comprise transducer housing, magnet assembly, vibrating membrane, motor sub-assembly.Transducer housing, define volume and inner surface, for electroacoustic transducer provides chamber, transducer housing can make various shape, as the geometry of cylindrical shape, D type, trapezoidal, roughly square, cast or any hope, the scale of transducer housing and size can change based on expection application, condition of work, required assembly etc.
Magnet assembly, comprise a pair magnet and to be distributed in for a pair outside it and the yoke be attached thereto, magnet provides enough electromagnetic fluxs, magnet assembly can form shape and the structure of corresponding housing 1 usually, but also can form the various shape and size that meet different embodiment, magnet is arranged on the restriction position of yoke.
Vibrating membrane, vibrating membrane outer perimeter section and inner walls are fixed, and any suitable fixing means can being adopted to be fixed on the inwall of housing, as glue being coated in the intersection of vibrating membrane outer ring and housing, vibrating membrane and inner walls being fixed after oven dry.
Motor sub-assembly, comprise coil body, reed, connector, reed is generally U-shaped band, it will be appreciated by those skilled in the art that, reed can be E type or other different structures, described reed is divided into fixed leg, mobile leg, connecting end portion, described reed fixed leg is fixed on outside yoke, mobile leg is connected with vibrating membrane by connector, connector is made up of the parallel rapidoprint of the sheet of such as metal or paper tinsel usually, and preferably connector and vibrating membrane and mobile leg are for being rigidly connected.
Surge protection component; comprise the first surge protection and the second surge protection; the first described surge protection and the asymmetric setting of the second surge protection; coil winding mold design is without the need to considering symmetrical precision; the auxiliary assembly jig of high symmetry is not needed during transducer assembling; very big reduction design cost, the simultaneously quality of improving product greatly.
As a kind of preferred version with the electroacoustic transducer of surge protection of the present invention; the first described surge protection is located at inside magnet; the second described surge protection is located at inside heteropleural coil body; the inner side that other parts are mentioned herein and herein refers to the side near mobile leg, and described outside refers to the side away from mobile leg.When the first surge protection is located at inside the magnet on the upside of mobile leg, when second surge protection is located at inside the coil body on the downside of certain leg, the mobile leg of reed is subject to impulsive force and moves upward, and touches the first surge protection and stop continuing to move upward after mobile leg moves a certain distance; The mobile leg of reed is subject to impulsive force and moves downward; touch the second surge protection after mobile leg moves a certain distance to stop continuing to move downward; reed can not make connecting end portion internal stress be greater than material yield stress because of displacement is excessive and permanent deformation occurs; prevent the sensitivity of transducer and distortion to be affected owing to impacting, thus play the effect to transducer surge protection.Further, the first described surge protection is made up of non-magnetic alloy, preferably the first surge protection is made of either aluminum or copper, height can be made at 0.03-0.05mm, diameter is the disk of 0.5-0.7mm, sheet or other structures of our other common shapes any can certainly be made as required, the second described surge protection is formed by glue, preferred second surge protection is when coiling, flowed into by the glue be coated on coil in the protecting against shock protection feature groove that winding former designs, namely shaping after oven dry, described protecting against shock protection feature groove is a height is the groove of 0.03-0.05mm, preferred recess width is 0.05-0.15mm, length is 0.5-1.5mm, the second surge protection formed is the bulge-structure that groove is corresponding.
As a kind of preferred version with the electroacoustic transducer of surge protection of the present invention, the first described surge protection is located at the inner walls of vibrating membrane opposite, the second described surge protection is located at inside the coil body on the downside of mobile leg, when the mobile leg of reed be subject to impulsive force move upward time, because mobile leg is connected with vibrating membrane by connector, mobile leg touches the first surge protection after driving vibrating membrane to move a certain distance stops continuing to move upward; When the mobile leg of reed be subject to impulsive force move downward time; touch the second surge protection after mobile leg moves a certain distance to stop continuing to move downward; reed can not make connecting end portion internal stress be greater than material yield stress because of displacement is excessive and permanent deformation occurs; prevent the sensitivity of transducer and distortion to be affected owing to impacting, thus play the effect to transducer surge protection.Further, the first described surge protection is made up of non-magnetic alloy, and the second described surge protection is formed by glue.
As a kind of preferred version with the electroacoustic transducer of surge protection of the present invention, the first described surge protection is located at the inner walls of vibrating membrane opposite, the second described surge protection is located at inside the magnet on the downside of mobile leg, when the mobile leg of reed be subject to impulsive force move upward time, because mobile leg is connected with vibrating membrane by connector, mobile leg touches the first surge protection after driving vibrating membrane to move a certain distance stops continuing to move upward; When the mobile leg of reed be subject to impulsive force move downward time; touch the second surge protection after mobile leg moves a certain distance to stop continuing to move downward; reed can not make connecting end portion internal stress be greater than material yield stress because of displacement is excessive and permanent deformation occurs; prevent the sensitivity of transducer and distortion to be affected owing to impacting, thus play the effect to transducer surge protection.Further, the first described surge protection and the second surge protection are made by non-magnetic alloy.
Beneficial effect:
The electroacoustic transducer with surge protection of the present invention, asymmetrical first surge protection and the second surge protection is adopted to protect reed, reed can not make connecting end portion internal stress be greater than material yield stress because of displacement is excessive and permanent deformation occurs, the sensitivity of transducer and distortion is prevented to be affected owing to impacting, thus the effect played transducer surge protection, coil winding mold design is without the need to considering symmetrical precision, the auxiliary assembly jig of high symmetry is not needed during transducer assembling, very big reduction design cost, the simultaneously quality of improving product greatly.
Accompanying drawing explanation
Fig. 1 is a kind of described electroacoustic transducer exploded perspective view with surge protection.
Fig. 2 is the schematic cross-section of electroacoustic transducer structure shown in Fig. 1.
Fig. 3 is the schematic cross-section of electroacoustic transducer structure described in embodiment 2.
Fig. 4 is the schematic cross-section of electroacoustic transducer structure described in embodiment 3.
Fig. 5 is the schematic cross-section of electroacoustic transducer structure described in embodiment 4.
Wherein: 1, housing 2, magnet assembly 21,21 ', magnet 22, yoke 3, vibrating membrane 31, vibrating membrane framework 41, coil body 42, reed 421, fixed leg 422, mobile leg 423, connecting end portion 51, first surge protection 52, second surge protection
These accompanying drawings are unnecessary proportionally to be drawn; disclosed embodiment is illustrated by graphical sysmbol, dotted line, diagrammatic representation and partial view sometimes; under specific circumstances, may have been omitted the details in these figure, these details are unnecessary for the disclosed surge protection component of understanding.Should be appreciated that the disclosure is not limited to illustrate in the accompanying drawings and disclosed specific embodiment again.In brief, it should be apparent to those skilled in the art that a large amount of variation by fall into the disclosure and claims spirit and scope within.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
As shown in Figures 1 and 2, a kind of electroacoustic transducer with surge protection, this transducer designs can be applicable in the equipment such as transmitter, microphone, receiver, loud speaker, accelerometer.It is useful that transducer is listened in the equipment such as proterctive equipment, even on a small scale sound speaker at such as hearing aids, inner ear type watch-dog, headphone, electronics.
The electroacoustic transducer with surge protection comprises transducer housing 1, magnet assembly 2, vibrating membrane 3, motor sub-assembly, magnet assembly 2, vibrating membrane 3, motor sub-assembly is installed in transducer housing 1, vibrating membrane framework 31 is provided with outside vibrating membrane 3, housing 1 is by upper shell, lower house forms, motor sub-assembly comprises coil body 41, reed 42 and connector (not shown in FIG.), magnet assembly 2 comprises a pair magnet 21, 21 ', with to be distributed in for a pair outside it and the yoke 22 be attached thereto, magnet assembly 2 and coil body 41 parallel arranged, reed 42 is divided into fixed leg 421, mobile leg 422, connecting end portion 423, mobile leg 422 end is connected with vibrating membrane 3 by connector (not shown in FIG.), when there is vibration in mobile leg 423, connector (not shown in FIG.) is caused to vibrate, vibrating membrane 3 moves in response to the correspondence motion of connector (not shown in FIG.).Be fixedly installed inside magnet 21 and make the first surge protection 51 by non-magnetic alloy, inside coil body 41, be provided with the second surge protection 52.In the implementation case, the first surge protection 51 is made of copper, and highly for 0.038mm, diameter are the disk of 0.508mm, can certainly make sheet or other structures of our other common shapes any as required.Second surge protection 52 is when coiling; flowed into by the glue be coated on coil in the protecting against shock protection feature groove that winding former designs; namely shaping after oven dry, the second surge protection 52 formed in the present embodiment to be the height formed on coil be 0.038mm, wide for 0.1mm, length be the projection of 1mm.
When the mobile leg of reed be subject to impulsive force move upward time, touch the first surge protection after mobile leg moves a certain distance and stop continuing to move upward; When the mobile leg of reed be subject to impulsive force move downward time; touch the second surge protection after mobile leg moves a certain distance to stop continuing to move downward; reed can not make connecting end portion internal stress be greater than material yield stress because of displacement is excessive and permanent deformation occurs; prevent the sensitivity of transducer and distortion to be affected owing to impacting, thus play the effect to transducer surge protection.
Embodiment 2
Fig. 3 illustrates the electroacoustic transducer structure that another kind has surge protection, the inner walls of vibrating membrane 3 opposite is provided with the first surge protection 51, the second surge protection 52 is provided with inside coil body 41, other structures are identical with Fig. 1, when the mobile leg 422 of reed 42 be subject to impulsive force move upward time, because mobile leg 422 is connected with vibrating membrane 3 by connector (not shown in FIG.), mobile leg 422 touches the first surge protection 51 after driving vibrating membrane 3 to move a certain distance stops continuing to move upward; When the mobile leg 422 of reed 42 be subject to impulsive force move downward time; touch the second surge protection 52 after mobile leg 422 moves a certain distance to stop continuing to move downward; reed 42 can not make connecting end portion internal stress be greater than material yield stress because of displacement is excessive and permanent deformation occurs; prevent the sensitivity of transducer and distortion to be affected owing to impacting, thus play the effect to transducer surge protection.Further; the first described surge protection 51 is made up of non-magnetic alloy; the shape of the first surge protection 51 and manufacturing process identical with the first surge protection in embodiment 1, the second described surge protection is formed by glue, and forming process is identical with the second surge protection forming process in embodiment 1.
Embodiment 3
Fig. 4 illustrates the another kind of electroacoustic transducer with surge protection; the inner walls of vibrating membrane 3 opposite is provided with the first surge protection 51; the first surge protection shape and forming process in the shape and forming process and embodiment 1 being made up the second surge protection 52, first surge protection 51 and the second surge protection 52 of non-magnetic alloy is fixedly installed identical in magnet 21 ' inner side.
When the mobile leg 422 of reed 42 be subject to impulsive force move upward time, because mobile leg 422 is connected with vibrating membrane 3 by connector, mobile leg 422 touches the first surge protection 51 after driving vibrating membrane 3 to move a certain distance stops continuing to move upward; When the mobile leg 422 of reed be subject to impulsive force move downward time; touch the second surge protection 52 after mobile leg 422 moves a certain distance to stop continuing to move downward; reed can not make connecting end portion internal stress be greater than material yield stress because of displacement is excessive and permanent deformation occurs; prevent the sensitivity of transducer and distortion to be affected owing to impacting, thus play the effect to transducer surge protection.Further, the first described surge protection 51 and the second surge protection 52 are made by non-magnetic alloy.
Embodiment 4
Fig. 5 is the another kind of electroacoustic transducer with surge protection; first surge protection 51 is located at magnet 21 ' upside; second surge protection 52 is located on the downside of the coil body 41 on the upside of mobile leg 422, and other structures are identical with embodiment 1, can play the effect of protection electroacoustic transducer equally.
Although be illustrated embodiments of the present invention in specification, these execution modes just as prompting, should not limit protection scope of the present invention.Carry out various omission, displacement and change without departing from the spirit and scope of the present invention all should be included in protection scope of the present invention.
Claims (9)
1. there is an electroacoustic transducer for surge protection, it is characterized in that, comprising:
Transducer housing, defines volume and inner surface, for electroacoustic transducer provides chamber;
Magnet assembly, comprises a pair magnet and to be distributed in for a pair outside it and the yoke be attached thereto;
Vibrating membrane, vibrating membrane outer perimeter section and inner walls are fixed;
Motor sub-assembly, comprises coil body, reed, connector, and described reed is divided into fixed leg, mobile leg, connecting end portion, and described reed fixed leg is fixed on outside yoke, and mobile leg is connected with vibrating membrane by connector;
Surge protection component, comprises the first surge protection and the second surge protection, the first described surge protection and the asymmetric setting of the second surge protection.
2. the electroacoustic transducer with surge protection according to claim 1, is characterized in that: the first described surge protection is located at inside magnet, and the second described surge protection is located at inside heteropleural coil body.
3. the electroacoustic transducer with surge protection according to claim 2, is characterized in that: the first described surge protection is made up of non-magnetic alloy.
4. the electroacoustic transducer with surge protection according to claim 2, is characterized in that: the second described surge protection is formed by glue.
5. the electroacoustic transducer with surge protection according to claim 1, is characterized in that: the first described surge protection is located at the inner walls of vibrating membrane opposite, and the second described surge protection is located at inside the coil body on the downside of mobile leg.
6. the electroacoustic transducer with surge protection according to claim 5, is characterized in that: the first described surge protection is made up of non-magnetic alloy.
7. the electroacoustic transducer with surge protection according to claim 5, is characterized in that: the second described surge protection is formed by glue.
8. the electroacoustic transducer with surge protection according to claim 1, is characterized in that: the first described surge protection is located at the inner walls of vibrating membrane opposite, and the second described surge protection is located at inside the magnet on the downside of mobile leg.
9. the electroacoustic transducer with surge protection according to claim 8, is characterized in that: the first described surge protection and the second surge protection are made by non-magnetic alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523326.2A CN104301842B (en) | 2014-10-08 | 2014-10-08 | Electroacoustic transducer with surge protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523326.2A CN104301842B (en) | 2014-10-08 | 2014-10-08 | Electroacoustic transducer with surge protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104301842A true CN104301842A (en) | 2015-01-21 |
| CN104301842B CN104301842B (en) | 2018-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410523326.2A Active CN104301842B (en) | 2014-10-08 | 2014-10-08 | Electroacoustic transducer with surge protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104301842B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108347681A (en) * | 2018-03-20 | 2018-07-31 | 深圳倍声声学技术有限公司 | A kind of armature structure and dynamic iron unit |
| CN110022518A (en) * | 2019-04-26 | 2019-07-16 | 苏州亿欧得电子有限公司 | A kind of low vortex magnetic loss armature device for electroacoustic transducer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1077586A2 (en) * | 1999-08-16 | 2001-02-21 | Microtronic Nederland B.V. | Shock improvement for an electroacoustic transducer |
| CN103079139A (en) * | 2013-01-31 | 2013-05-01 | 苏州恒听电子有限公司 | Anti-collision falling-resisting type telephone receiver |
| CN103731769A (en) * | 2013-12-27 | 2014-04-16 | 苏州恒听电子有限公司 | Telephone receiver with anti-collision and anti-throwing function |
| CN103747378A (en) * | 2013-12-27 | 2014-04-23 | 苏州恒听电子有限公司 | Magnetic driving mechanism and receiver |
| CN204119486U (en) * | 2014-10-08 | 2015-01-21 | 苏州亿欧得电子有限公司 | There is the electroacoustic transducer of surge protection |
-
2014
- 2014-10-08 CN CN201410523326.2A patent/CN104301842B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1077586A2 (en) * | 1999-08-16 | 2001-02-21 | Microtronic Nederland B.V. | Shock improvement for an electroacoustic transducer |
| CN103079139A (en) * | 2013-01-31 | 2013-05-01 | 苏州恒听电子有限公司 | Anti-collision falling-resisting type telephone receiver |
| CN103731769A (en) * | 2013-12-27 | 2014-04-16 | 苏州恒听电子有限公司 | Telephone receiver with anti-collision and anti-throwing function |
| CN103747378A (en) * | 2013-12-27 | 2014-04-23 | 苏州恒听电子有限公司 | Magnetic driving mechanism and receiver |
| CN204119486U (en) * | 2014-10-08 | 2015-01-21 | 苏州亿欧得电子有限公司 | There is the electroacoustic transducer of surge protection |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108347681A (en) * | 2018-03-20 | 2018-07-31 | 深圳倍声声学技术有限公司 | A kind of armature structure and dynamic iron unit |
| CN110022518A (en) * | 2019-04-26 | 2019-07-16 | 苏州亿欧得电子有限公司 | A kind of low vortex magnetic loss armature device for electroacoustic transducer |
| CN110022518B (en) * | 2019-04-26 | 2024-04-12 | 苏州亿欧得电子有限公司 | Low-eddy-current magnetic-loss armature device for electroacoustic transducer |
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| Publication number | Publication date |
|---|---|
| CN104301842B (en) | 2018-05-29 |
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