CN102395096A - Vibration assembly and manufacturing method thereof, and electroacoustic transducer - Google Patents
Vibration assembly and manufacturing method thereof, and electroacoustic transducer Download PDFInfo
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- CN102395096A CN102395096A CN2011103623354A CN201110362335A CN102395096A CN 102395096 A CN102395096 A CN 102395096A CN 2011103623354 A CN2011103623354 A CN 2011103623354A CN 201110362335 A CN201110362335 A CN 201110362335A CN 102395096 A CN102395096 A CN 102395096A
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Abstract
The invention provides a vibration assembly used for a moving-coil type electroacoustic transducer. The vibration assembly comprises a voice coil and a diaphragm. The voice coil is manufactured by winding of a conductive material; the winding has two leading-out wires that are used for exerting an electrical signal on the voice coil. And one side of the diaphragm is attached to the voice coil. Besides, the two leading-out wires are extended at the side of the diaphragm along a direction that is in parallel with the diaphragm, wherein the voice coil is attached to the side of the diaphragm; and moreover, at least one portion of at least one of the leading-out wires is connected with the diaphragm together. In addition, the invention also provides a method for manufacturing the vibration assembly. And a moving-coil loudspeaker containing the vibration assembly is also provided in the invention.
Description
Technical field
The present invention relates in general to the electroacoustic transduction field, the vibration component that is specifically related to the moving-coil type electroacoustic transducer and is used for the moving-coil type electroacoustic transducer.
Background technology
Electroacoustic transducer (electroacoustic transducer) is the device that the signal of telecommunication and voice signal are changed each other.Typical moving-coil type (also claiming " electrodynamic type ") electroacoustic transducer involving vibrations assembly, the vibrating diaphragm that this vibration component comprises voice coil loudspeaker voice coil and is attached to voice coil loudspeaker voice coil.Voice coil loudspeaker voice coil is processed by the winding of electric conducting material, and said winding has lead-out wire, is used for the signal of telecommunication is applied to voice coil loudspeaker voice coil or exports the signal of telecommunication that produces at voice coil loudspeaker voice coil.
Loud speaker (speaker) is a kind of electroacoustic transducer that becomes electrical signal conversion voice signal.In the use of coil-moving speaker, lead-out wire is applied to voice coil loudspeaker voice coil with the signal of telecommunication, and making has electric current to flow through in the voice coil loudspeaker voice coil, thus voice coil loudspeaker voice coil forced vibration in magnetic field, and drive the vibrating diaphragm vibration sounding.
For equipment such as portable computer, portable player, mobile phones, it is lightening that people are pursuing always, and this just needs littler lighter electroacoustic transducer.Miniature electro-acoustic transducer (micro electroacoustic transducer), for example Microspeaker (micro speaker) arises at the historic moment, and also requires its performance to improve constantly simultaneously.
Summary of the invention
The inventor finds that in the use of moving-coil type electroacoustic transducer, along with the vibration of voice coil loudspeaker voice coil and vibrating diaphragm, the lead-out wire of the winding of voice coil loudspeaker voice coil also can vibrate, thereby might bump with vibrating diaphragm.For the miniature moving-coil type electroacoustic transducer, the space between said lead-out wire and the vibrating diaphragm is little, make said lead-out wire more easily and vibrating diaphragm bump.Thereby said collision can produce the acoustical behavior that noise can influence electroacoustic transducer, even can cause electroacoustic transducer to be scrapped.
For the lead-out wire of the winding that solves voice coil loudspeaker voice coil and the collision problem of vibrating diaphragm, make the present invention.
One aspect of the present invention provides a kind of vibration component that is used for the moving-coil type electroacoustic transducer, and this vibration component comprises:
A voice coil loudspeaker voice coil, its winding by electric conducting material is processed, and said winding has two lead-out wires, is used for the signal of telecommunication is applied to said voice coil loudspeaker voice coil or exports the signal of telecommunication that produces at said voice coil loudspeaker voice coil; And
A vibrating diaphragm, the one side of said vibrating diaphragm is attached to said voice coil loudspeaker voice coil;
Wherein, said two lead-out wires are attached with a side of said voice coil loudspeaker voice coil and extend along the direction that is parallel to said vibrating diaphragm at said vibrating diaphragm, and at least a portion and the said vibrating diaphragm of at least one lead-out wire in said two lead-out wires are bound up.
By means of above-mentioned connection, the lead-out wire of the winding of voice coil loudspeaker voice coil can be integral vibration in the vibration processes of vibrating diaphragm with vibrating diaphragm basically, thereby can reduce the possibility that lead-out wire and vibrating diaphragm bump, and/or reduce the dynamics that lead-out wire and vibrating diaphragm bump.Should be understood that in practical application those skilled in the art can select suitable means to realize above-mentioned connection according to factors such as the material of for example vibrating diaphragm and lead-out wire, environment for use, production procedure, costs.
In one embodiment, said connection realizes through connector.Should be understood that in practical application those skilled in the art can select suitable connector, for example: elastomer, this elastomer is attached to vibrating diaphragm, and lead-out wire passes from this elastomer; With the integrated projection of vibrating diaphragm, lead-out wire passes from this projection; Adhesive tape; Or the like.
In one embodiment, the part of said connector between lead-out wire and vibrating diaphragm is flexible.Use this embodiment, can cushion the relative motion that may take place between lead-out wire and the vibrating diaphragm through the elastic part of connector.
In one embodiment, said connector is an adhesive.
In one embodiment, the hardness of said adhesive in the environment for use of said vibration component is in the scope of shore hardness (Shore hardness) A1 to A50.Use this embodiment, can make lead-out wire be not easy to fracture, and make adhesive better sticking nature arranged vibrating diaphragm in junction.
In one embodiment, the dynamic viscosity of said adhesive in the environment for use of said vibration component is not less than 35000mPas (milli pascal second), for example in the scope of 35000mPas to 47000mPas.Use this embodiment, can realize more firm connection effect.
In one embodiment, the dynamic viscosity of said adhesive in the environment for use of said vibration component is in the scope of 42000mPas to 45000mPas.
In one embodiment, said adhesive does not solidify in the environment for use of said vibration component.
In one embodiment, said adhesive is a grease.
In one embodiment, said adhesive is the Floil G-424Z that Kanto Kasei Co., Ltd. produces.Floil G-424Z belongs to grease, and its dynamic viscosity in room temperature environment is 44000mPas and does not solidify.
In one embodiment, have one or more junction respectively between said two lead-out wires and the said vibrating diaphragm.
In one embodiment, said two lead-out wires respectively and the junction between the said vibrating diaphragm on said vibrating diaphragm, be symmetrically distributed with respect to said voice coil loudspeaker voice coil.Use this embodiment, can reduce the vibrating diaphragm vibration asymmetry that causes by connection, thereby alleviate the adverse effect of the existence of connection acoustical behavior.
In one embodiment, have common one or more junction between said two lead-out wires and the said vibrating diaphragm.
In one embodiment, being not less than of the length of every lead-out wire in the vibrating diaphragm scope 1/4th is bound up with said vibrating diaphragm.
In one embodiment, the quality of said connector account for said vibration component gross mass 2% to 10%, and/or in the scope of 0.8mg to 4mg.If the quality of connector is excessive, then easy vibration to vibrating diaphragm has adverse effect.
The method that another aspect of the present invention provides a kind of manufacturing to be used for the vibration component of moving-coil type electroacoustic transducer, this method comprises:
Prepare following assembly: a voice coil loudspeaker voice coil, its winding by electric conducting material is processed, and said winding has two lead-out wires, is used for the signal of telecommunication is applied to said voice coil loudspeaker voice coil or exports the signal of telecommunication that produces at said voice coil loudspeaker voice coil; And a vibrating diaphragm, the one side of said vibrating diaphragm is attached to said voice coil loudspeaker voice coil; Wherein, said two lead-out wires extend along the direction that is parallel to said vibrating diaphragm in the side that said vibrating diaphragm is attached with said voice coil loudspeaker voice coil; And
At least a portion and the said vibrating diaphragm of said at least one lead-out wire are bound up.
In one embodiment, at least a portion of said at least one lead-out wire and said vibrating diaphragm are bound up comprise: on said two lead-out wires, one or more connectors are set respectively; Then said two lead-out wires are bound up through connector and said vibrating diaphragm from setting on one's body respectively.In a more particular embodiment, any one in said one or more connectors or a plurality of can be adhesive.
In one embodiment, at least a portion of said at least one lead-out wire and said vibrating diaphragm are bound up comprise: one or more connectors are set on said vibrating diaphragm; Then said two lead-out wires are bound up through said one or more connectors and said vibrating diaphragm.In a more particular embodiment, any one in said one or more connectors or a plurality of can be adhesive.
In one embodiment, said method also comprises: with said two lead-out wires respectively and the junction between the said vibrating diaphragm be arranged as on said vibrating diaphragm with respect to said voice coil loudspeaker voice coil and be symmetrically distributed.
In one embodiment, said method also comprises: being not less than of the length of every lead-out wire in the vibrating diaphragm scope 1/4th is bound up with said vibrating diaphragm.
Another aspect of the present invention provides a kind of moving-coil type electroacoustic transducer that comprises above-mentioned vibration component.
In one embodiment, said electroacoustic transducer is a loud speaker.
In one embodiment, said electroacoustic transducer is a Microspeaker.
In one embodiment, said electroacoustic transducer is a miniature electro-acoustic transducer.
Description of drawings
Combine the detailed description of accompanying drawing through hereinafter, will understand the present invention better.In the accompanying drawings:
Fig. 1 is the sketch map of vibration component according to an embodiment of the invention.
Fig. 2 is the sketch map of vibration component according to another embodiment of the invention.
Fig. 3 is the sketch map of vibration component according to still another embodiment of the invention.
Fig. 4 schematically shows a typical coil-moving speaker with the form of sectional view.
Fig. 5 is the improved loud speaker and the comparison diagram of the noise curve of improved loud speaker not according to the present invention.
Should be understood that these accompanying drawings only for illustrative purposes, and may not draw in proportion.In each accompanying drawing, two the identical figure notations in end refer to corresponding components.
Embodiment
In this article, miniature electro-acoustic transducer refers to and has the electroacoustic transducer that is suitable for being used in the size in the portable electric appts.The diameter of miniature electro-acoustic transducer (for example Microspeaker) is generally less than and equals 40mm, especially smaller or equal to 20mm (other shapes are analogized by this).
Fig. 1 is the sketch map of vibration component 100 according to an embodiment of the invention.Vibration component 100 comprises: voice coil loudspeaker voice coil 110, and its winding by electric conducting material (for example copper) is processed, and said winding has two lead-out wires 111 and 112; And vibrating diaphragm 120, the one side of vibrating diaphragm 120 is attached to voice coil loudspeaker voice coil 110.Wherein, the side that lead-out wire 111 and 112 is attached with voice coil loudspeaker voice coil 110 at vibrating diaphragm 120 is extended along the direction that is parallel to vibrating diaphragm 120, and has a junction a between lead-out wire 111 and the vibrating diaphragm 120, has a junction b between lead-out wire 112 and the vibrating diaphragm 120.In this embodiment, about 1/3rd of the length of lead-out wire 111 and 112 in the vibrating diaphragm scope be bound up with vibrating diaphragm 120.
Fig. 2 is the sketch map of vibration component 200 according to another embodiment of the invention.Vibration component 200 is with the difference of vibration component 100, the lead-out wire 211 of the winding of voice coil loudspeaker voice coil 210 and 212 with vibrating diaphragm 220 between junction c and d on vibrating diaphragm 220 with respect to voice coil loudspeaker voice coil 210 symmetrical distributions.
Fig. 3 is the sketch map of vibration component 300 according to still another embodiment of the invention.Vibration component 300 is with the difference of vibration component 100, the lead-out wire 311 of the winding of voice coil loudspeaker voice coil 310 and 312 and vibrating diaphragm 320 between have a common junction e.
Fig. 4 schematically shows a typical coil-moving speaker 10 with the form of sectional view.Loud speaker 10 comprises: vibration component, and it comprises voice coil loudspeaker voice coil 1 and vibrating diaphragm 2; And magnetic circuit system, it comprises inner magnet 3 and outer magnet 4.The operation principle of typical coil-moving speaker is known in the art, does not describe in detail at this.Although the winding and the lead-out wire of voice coil loudspeaker voice coil are not shown among this figure, those skilled in the art can know how vibration component of the present invention is applied to this loud speaker according to the instruction of preceding text.Should be understood that vibration component of the present invention can also be applied to the coil-moving speaker different with structure shown in Figure 4 existing or that will occur from now on.
For advantage of the present invention is described, structure Microspeaker roughly as shown in Figure 4 is used improvement of the present invention, and improved loud speaker and not improved loud speaker are carried out noise testing.Improved loud speaker and not improved loud speaker are same models, and size of main body is approximately 14mm * 11mm * 5mm (length * wide * height), and the shape of vibrating diaphragm and voice coil loudspeaker voice coil is roughly as shown in Figure 1.Improved loud speaker and not the difference of improved loud speaker only be; In improved loud speaker, the FloilG-424Z that the lead-out wire of the winding of voice coil loudspeaker voice coil uses Kanto Kasei Co., Ltd. to produce is bound up with mode roughly as shown in Figure 1 and vibrating diaphragm.
In first test, to an improved loud speaker with one not the voice coil loudspeaker voice coil of improved loud speaker apply identical ac signal, with the acoustic analysis appearance noise curve is analyzed and drawn to the sound of these two loud speakers generations.The power of the simple alternating current signal of telecommunication that is applied is 600mw, and frequency is in the scope of 200Hz to 2000Hz, and the frequency sweep time is 3 seconds, and the frequency sweep number of times is 2 times.Fig. 5 is the improved loud speaker and the comparison diagram of the noise curve of improved loud speaker not according to the present invention.In the figure, the frequency (unit is Hz) of the ac signal that transverse axis is represented to be applied, the intensity (unit is dB) of the noise that the longitudinal axis is represented to be sent, dotted line is the noise curve of improved loud speaker, solid line is the noise curve of improved loud speaker not.Horizontal line section between 70dB and 75dB is a control line.Can see that from this figure the noise that improved loud speaker sends is significantly less than the noise that not improved loud speaker sends generally.Especially, near the about frequency (that is, the resonance frequency of vibration component) of 900Hz to 1100Hz, the noise curve of improved loud speaker has not surpassed control line, and is the highest even surpassed 75dB; The noise curve of improved loud speaker does not all surpass control line in each frequency.
In second test, to 100 improved loud speakers with 100 not the voice coil loudspeaker voice coil of improved loud speaker apply identical ac signal, the sound that these loud speakers is sent by housebroken personnel carries out artificial audition test, with the subjective judgement noise situations.The power of the simple alternating current signal of telecommunication that is applied is 600mw, and frequency is in the scope of 200Hz to 2000Hz, and the frequency sweep time is 3 seconds, and the frequency sweep number of times is 2 times.Subjective judgement result is: in these 100 not improved loud speakers, have 15 noise takes place, and in these 100 improved loud speakers, have no loud speaker generation noise.
For viscosity that adhesive is described to connecting the influence of effect, to the application roughly as shown in Figure 4 of two groups of each 100 structures improved Microspeaker of the present invention test.These loud speakers are same models, and size of main body is approximately 14mm * 11mm * 5mm (length * wide * height), and the shape of vibrating diaphragm and voice coil loudspeaker voice coil is roughly as shown in Figure 1.The lead-out wire of the winding of the voice coil loudspeaker voice coil of each loud speaker is bound up with mode roughly as shown in Figure 1 and vibrating diaphragm through adhesive, and the binder dosage of every lead-out wire is 0.7mg.
A group: use Floil G-424Z with organic solvent diluting as adhesive, its dynamic viscosity is 25000mPas.
The B group: use undiluted Floil G-424Z as adhesive, its dynamic viscosity is 44000mPas.
Each loud speaker to A group and B group applies the audio signal that power is 600mw, and after 500 hours, inspection connects effect.Check result is: have 41 the phenomenon that tap separates with adhesive to occur in 100 loud speakers of A group, and have no loud speaker the phenomenon that tap or vibrating diaphragm separate with adhesive to occur in 100 loud speakers of B group.
Should be understood that among this paper embodiment only for illustrative purposes, those skilled in the art can make many variants, and scope of the present invention is defined by the claims.
Claims (10)
1. vibration component that is used for the moving-coil type electroacoustic transducer comprises:
A voice coil loudspeaker voice coil, its winding by electric conducting material is processed, and said winding has two lead-out wires, is used for the signal of telecommunication is applied to said voice coil loudspeaker voice coil or exports the signal of telecommunication that produces at said voice coil loudspeaker voice coil; And
A vibrating diaphragm, the one side of said vibrating diaphragm is attached to said voice coil loudspeaker voice coil;
Wherein, said two lead-out wires are attached with a side of said voice coil loudspeaker voice coil and extend along the direction that is parallel to said vibrating diaphragm at said vibrating diaphragm, and at least a portion and the said vibrating diaphragm of at least one lead-out wire in said two lead-out wires are bound up.
2. vibration component according to claim 1, wherein said connection realizes through connector.
3. vibration component according to claim 2, wherein said connector is an adhesive, for example grease.
4. vibration component according to claim 3, the dynamic viscosity of wherein said adhesive in the environment for use of said vibration component is not less than 35000mPas, for example in the scope of 35000mPas to 47000mPas.
5. according to the described vibration component of each claim in the claim 1 to 4, have one or more junction respectively between wherein said two lead-out wires and the said vibrating diaphragm.
6. vibration component according to claim 5, wherein said two lead-out wires respectively and the junction between the said vibrating diaphragm on said vibrating diaphragm, be symmetrically distributed with respect to said voice coil loudspeaker voice coil.
7. according to the described vibration component of each claim in the claim 1 to 4, have common one or more junction between wherein said two lead-out wires and the said vibrating diaphragm.
8. according to the described vibration component of each claim in the claim 1 to 4, wherein being not less than of the length of every lead-out wire in the vibrating diaphragm scope 1/4th is bound up with said vibrating diaphragm.
9. a manufacturing is used for the method for the vibration component of moving-coil type electroacoustic transducer, comprising:
Prepare following assembly: a voice coil loudspeaker voice coil, its winding by electric conducting material is processed, and said winding has two lead-out wires, is used for the signal of telecommunication is applied to said voice coil loudspeaker voice coil or exports the signal of telecommunication that produces at said voice coil loudspeaker voice coil; And a vibrating diaphragm, the one side of said vibrating diaphragm is attached to said voice coil loudspeaker voice coil; Wherein, said two lead-out wires extend along the direction that is parallel to said vibrating diaphragm in the side that said vibrating diaphragm is attached with said voice coil loudspeaker voice coil; And
At least a portion and the said vibrating diaphragm of said at least one lead-out wire are bound up.
10. moving-coil type electroacoustic transducer, it comprises according to the described vibration component of each claim in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103623354A CN102395096A (en) | 2011-11-15 | 2011-11-15 | Vibration assembly and manufacturing method thereof, and electroacoustic transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103623354A CN102395096A (en) | 2011-11-15 | 2011-11-15 | Vibration assembly and manufacturing method thereof, and electroacoustic transducer |
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| CN102395096A true CN102395096A (en) | 2012-03-28 |
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| CN2011103623354A Pending CN102395096A (en) | 2011-11-15 | 2011-11-15 | Vibration assembly and manufacturing method thereof, and electroacoustic transducer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2166569Y (en) * | 1993-07-16 | 1994-05-25 | 广东乐普电器公司 | Composite Impedance Loudspeaker |
| US20080087493A1 (en) * | 2005-03-09 | 2008-04-17 | The Furukawa Electric Co, Ltd. | Diaphragm For Planar Speaker And Planar Speaker |
| CN101227766A (en) * | 2008-01-29 | 2008-07-23 | 歌尔声学股份有限公司 | Moving-coil type electro-acoustic conversing device |
| CN201699938U (en) * | 2010-06-23 | 2011-01-05 | 江苏大学 | Novel durable earphones |
-
2011
- 2011-11-15 CN CN2011103623354A patent/CN102395096A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2166569Y (en) * | 1993-07-16 | 1994-05-25 | 广东乐普电器公司 | Composite Impedance Loudspeaker |
| US20080087493A1 (en) * | 2005-03-09 | 2008-04-17 | The Furukawa Electric Co, Ltd. | Diaphragm For Planar Speaker And Planar Speaker |
| CN101227766A (en) * | 2008-01-29 | 2008-07-23 | 歌尔声学股份有限公司 | Moving-coil type electro-acoustic conversing device |
| CN201699938U (en) * | 2010-06-23 | 2011-01-05 | 江苏大学 | Novel durable earphones |
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Application publication date: 20120328 |