CN106170115A - A kind of vibrational system in voice coil structure and speaker - Google Patents
A kind of vibrational system in voice coil structure and speaker Download PDFInfo
- Publication number
- CN106170115A CN106170115A CN201610702617.7A CN201610702617A CN106170115A CN 106170115 A CN106170115 A CN 106170115A CN 201610702617 A CN201610702617 A CN 201610702617A CN 106170115 A CN106170115 A CN 106170115A
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- Prior art keywords
- heat
- voice coil
- layer portion
- conducting layer
- thermal insulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses the vibrational system in a kind of voice coil structure and speaker, speech coil framework includes for constituting described side of sidewall portion and top and being positioned at one layer of heat-conducting layer of inner side, be positioned at one layer of thermal insulation layer in outside, and for the described heat-conducting layer adhesive linkage with thermal insulation layer that bonds, described heat-conducting layer includes being positioned at the first heat-conducting layer portion of side of sidewall portion position and being positioned at the second heat-conducting layer portion of tip position, described thermal insulation layer includes being positioned at the first thermal insulation layer portion of side of sidewall portion position and being positioned at the second thermal insulation layer portion of tip position, and described voice coil loudspeaker voice coil body is fixed in described first heat-conducting layer portion.Voice coil structure of the present invention, on the one hand can ensure that the heat dispersion of structure, on the other hand can effectively completely cut off the high temperature at vibrating diaphragm and construction bonds, prevent vibrating diaphragm high temperature deformation, thus meet the work requirements under the long-time high load capacity of speaker, it is ensured that speaker reliability and stability.
Description
Technical field
The present invention relates to electroacoustic field, more particularly, to a kind of voice coil structure；The invention still further relates to a kind of speaker
Vibrational system.
Background technology
The vibrational system of speaker generally comprises vibrating diaphragm, is positioned at the voice coil loudspeaker voice coil below vibrating diaphragm, for fixing voice coil loudspeaker voice coil and being incorporated into
Voice coil structure on the downside of vibrating diaphragm.Voice coil loudspeaker voice coil is mainly played a supportive role by voice coil structure, to prevent voice coil loudspeaker voice coil from deforming.
Along with Microspeaker is more and more higher for the requirement of full frequency band performance, use the structure sound of integration metal material
Circle design can well expand high frequency performance, but under high intensity, long reliability test, the high temperature that voice coil loudspeaker voice coil produces
Can be conducted by structure, thus vibrating diaphragm generation high temperature deformation can be made, cause speaker acoustic distortions degradation；If knot
Structure is in higher temperature for a long time, and the glue of bonding vibrating diaphragm and structure can be made to soften, and easily occurs that what vibrating diaphragm separated with structure asks
Topic.
Summary of the invention
It is an object of the present invention to provide the new solution of a kind of voice coil structure.
According to the first aspect of the invention, it is provided that a kind of voice coil structure, including speech coil framework be fixed on speech coil framework
On voice coil loudspeaker voice coil body, described speech coil framework includes that side of sidewall portion and top, described speech coil framework include for constituting described side of sidewall portion
The one layer of heat-conducting layer with top and being positioned at inner side, the one layer of thermal insulation layer being positioned at outside, and be used for boning described heat-conducting layer with every
The adhesive linkage of thermosphere, described heat-conducting layer includes being positioned at the first heat-conducting layer portion of side of sidewall portion position and is positioned at the second of tip position and leads
Thermosphere portion, described thermal insulation layer includes being positioned at the first thermal insulation layer portion of side of sidewall portion position and being positioned at the second thermal insulation layer of tip position
Portion, described voice coil loudspeaker voice coil body is fixed in described first heat-conducting layer portion.
Optionally, described second thermal insulation layer portion all covers described second heat-conducting layer portion or described second thermal insulation layer portion
Only covering the peripheral position in the second heat-conducting layer portion, described first thermal insulation layer portion only part covers the first heat-conducting layer portion, described voice coil loudspeaker voice coil
Body is fixed on the first heat-conducting layer portion and is not covered with on the outer surface in the first thermal insulation layer portion.
Optionally, described second thermal insulation layer portion all covers described second heat-conducting layer portion or described second thermal insulation layer portion
Only covering the peripheral position in the second heat-conducting layer portion, described first thermal insulation layer portion all covers the first heat-conducting layer portion, and described voice coil loudspeaker voice coil is originally
Body is fixed on the inner surface in the first heat-conducting layer portion.
Optionally, described second thermal insulation layer portion all covers described second heat-conducting layer portion or described second thermal insulation layer portion
Only covering the peripheral position in the second heat-conducting layer portion, described first thermal insulation layer portion only part covers the first heat-conducting layer portion, described voice coil loudspeaker voice coil
Body is fixed on the inner surface in the first heat-conducting layer portion.
Optionally, the bending part in arc-shaped is formed in the position that described side of sidewall portion is connected with top.
Optionally, described heat-conducting layer is metal material, and described thermal insulation layer is carbon fibre material or polyimide material.
Optionally, described heat-conducting layer selects magnesium material or aluminum or magnesium-aluminium alloy material.
Optionally, described adhesive linkage is adhesive；
Or described adhesive linkage includes the substrate layer being made up of rubber, thermoplastic elastic material or plastic material, and
It is located at the adhesive of substrate layer both sides.
Optionally, the cross section of described voice coil structure is rectangular, circular or kidney-shaped；Described top is flat-head type or middle part
Convex closure type or middle part hollow type or medial recess type.
According to a further aspect in the invention, it is provided that the vibrational system in a kind of speaker, including vibrating diaphragm and above-mentioned
Voice coil structure；The top adhesive of described voice coil structure is on vibrating diaphragm.
The top of voice coil structure of the present invention is used for being bonded in vibrating diaphragm so that the top of this voice coil structure can be as vibrating diaphragm
Top dome use.The heat that voice coil loudspeaker voice coil produces can be effectively conducted in structure by the heat-conducting layer of the present invention, thus carries out big face
Long-pending heat radiation；Thermal insulation layer in composite construction can play good heat insulating function, such that it is able to prevent due to structure temperature mistake
High and high temperature deformation that vibrating diaphragm is brought.Composite construction of the present invention, on the one hand can ensure that the heat dispersion of structure, on the other hand
Can effectively completely cut off the high temperature at vibrating diaphragm and construction bonds, prevent vibrating diaphragm high temperature deformation, thus it is the highest negative to meet speaker
Work requirements under lotus, it is ensured that speaker reliability and stability.
It was found by the inventors of the present invention that in the prior art, the high temperature that voice coil loudspeaker voice coil produces can be conducted by structure, thus
Vibrating diaphragm generation high temperature deformation can be made, cause speaker acoustic distortions degradation；Higher temperature it is in for a long time such as fruit structure,
Bonding vibrating diaphragm can be made to soften with the glue of structure, the problem that vibrating diaphragm separates with structure easily occurs.Therefore, the present invention is to be realized
That technical assignment or the those skilled in the art of technical problem is that to be solved never expect or it is not expected that, therefore this
Invention is a kind of new technical scheme.
By detailed description to the exemplary embodiment of the present invention referring to the drawings, the further feature of the present invention and
Advantage will be made apparent from.
Accompanying drawing explanation
Combined in the description and the accompanying drawing of the part that constitutes description shows embodiments of the invention, and even
With its explanation together for explaining the principle of the present invention.
Fig. 1 to Fig. 6 is the profile of six kinds of embodiments of voice coil structure of the present invention.
Detailed description of the invention
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should also be noted that unless additionally have
Body illustrates, the parts illustrated the most in these embodiments and positioned opposite, the numerical expression of step and numerical value are not intended to this
The scope of invention.
Description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And any restriction applied or use.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of when, described technology, method and apparatus should be considered a part for description.
It is shown here that any occurrence should be construed as merely exemplary with in all examples discussed, and not
It is as restriction.Therefore, other example of exemplary embodiment can have different values.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it is further discussed in accompanying drawing subsequently.
With reference to Fig. 1, the invention provides a kind of voice coil structure, it includes speech coil framework and is fixed on speech coil framework
Voice coil loudspeaker voice coil body 3.Described speech coil framework includes the hollow cavity surrounded by side of sidewall portion 1, and is positioned at side of sidewall portion 1 upper end and covers it
The top 2 of upper end open；This top 2 links together with the upper end of side of sidewall portion 1 so that described side of sidewall portion 1, top 2 are enclosed jointly
Become the tubular structure of a lower ending opening.Wherein, the shape of cross section of the speech coil framework that described side of sidewall portion 1, top 2 surround can
To be rectangle well-known to those skilled in the art, circle or kidney-shaped.Top 2 can use flat-head type, middle part convex closure type, middle part
The shape of hollow out in the middle part of umbilicate type, or employing, these are all several structures that in sounding field, top dome is commonly used, at this no longer
Illustrate.
The voice coil structure of the present invention, described side of sidewall portion 1, top 2 can use identical material, and it includes being positioned at
One layer of heat-conducting layer of side, it is positioned at one layer of thermal insulation layer in outside, and for the described heat-conducting layer adhesive linkage 5 with thermal insulation layer that bonds.
The heat-conducting layer of the present invention can use the metal materials such as magnesium material, aluminum, magnesium-aluminium alloy material, or those skilled in the art
Known heat conductivity preferably other material etc..Described adhesive linkage 5 can be adhesive；At this utility model, another is preferred
In embodiment, described adhesive linkage 5 can be the base material including being made up of rubber, thermoplastic elastic material or plastic material
Layer, and be located at the adhesive of substrate layer both sides, described adhesive linkage 5 by the adhesive of substrate layer both sides by described heat-conducting layer and
Insulating barrier is bonded together.Wherein adhesive can be material well-known to those skilled in the art.Described thermal insulation layer 4 can be adopted
With carbon fibre material or or polyimide material, or heat insulation preferably other material well-known to those skilled in the art
Deng.
The heat-conducting layer of the present invention, thermal insulation layer are each provided with one layer, and heat-conducting layer, adhesive linkage 5, thermal insulation layer are compounded in one successively
After Qiing, define three layers of compound sandwich structure.Side of sidewall portion 1, top 2 all use this compound sandwich structure, in the present invention
One preferred embodiment in, described side of sidewall portion 1, top 2 can be one, such as can be to the plate of same composite construction
Material carries out cutting, bending, thus forms the side of sidewall portion 1 of the present invention, top 2；Wherein it is preferred that on described side of sidewall portion 1 and top
The position that portion 2 connects forms the bending part in arc-shaped.
Described heat-conducting layer includes being positioned at the first heat-conducting layer portion 6a of side of sidewall portion 1 position and is positioned at the second of position, top 2 and leads
Thermosphere portion 6b, described thermal insulation layer include being positioned at the first thermal insulation layer portion 4a of side of sidewall portion 1 position and be positioned at the second of position, top 2 every
Thermosphere portion 4b, described voice coil loudspeaker voice coil body 3 is fixed on described first heat-conducting layer portion 6a.
In one specific embodiment of the present invention, with reference to Fig. 1, described first heat-conducting layer portion 6a and the second heat-conducting layer portion
6b is one, and described first thermal insulation layer portion 4a and described second thermal insulation layer portion 4b is one, and described second thermal insulation layer portion
4b all covers the whole upper surface at described second heat-conducting layer portion 6b, and described first thermal insulation layer portion 4a only part covers first and leads
Thermosphere portion 6a, such that it is able to come out by the partial outer face of the first heat-conducting layer portion 6a, described voice coil loudspeaker voice coil body 3 is fixed on first
Heat-conducting layer portion 6a is not covered with on the outer surface of the first thermal insulation layer portion 4a so that the heat of described voice coil loudspeaker voice coil body 3 can be by leading
Thermosphere distributes, with reference to Fig. 1.
The voice coil structure of the present invention may be used on the vibrational system in speaker, and the top 2 of described voice coil structure can be passed through
The mode of gluing is bonded in the lower end of vibrating diaphragm, specifically so that the second thermal insulation layer portion 4b in top 2 bonds with the lower end of vibrating diaphragm
Together.Described speech coil framework can be that voice coil loudspeaker voice coil body 3 provides a good supporting role so that voice coil loudspeaker voice coil body 3 can be around
That makes is thinner, can also be conveniently adjusted voice coil loudspeaker voice coil body 3 position structurally, it is achieved thereby that voice coil loudspeaker voice coil body 3 is at magnetic simultaneously
The regulation of position in road, this acoustical behavior being conducive to improving speaker.The top 2 of voice coil structure of the present invention is bonded in vibrating diaphragm
Together so that the top 2 of this voice coil structure can play the effect of vibrating diaphragm top dome.
The top of voice coil structure of the present invention is used for being bonded in vibrating diaphragm so that the top of this voice coil structure can be as vibrating diaphragm
Top dome use.The heat that voice coil loudspeaker voice coil produces can be conducted by the heat-conducting layer of the present invention effectively, thus carries out large-area
Heat radiation；Thermal insulation layer in composite construction can play good heat insulating function, such that it is able to prevent due to structure temperature too high and
The high temperature deformation that vibrating diaphragm is brought.Composite construction of the present invention, on the one hand can ensure that the heat dispersion of structure, the most permissible
Effectively completely cut off the high temperature at vibrating diaphragm and construction bonds, prevent vibrating diaphragm high temperature deformation, thus meet under the long-time high load capacity of speaker
Work requirements, it is ensured that speaker reliability and stability.
This utility model one preferred embodiment in, described second thermal insulation layer portion 4b can also be placed only in second
The peripheral position of heat-conducting layer portion 6b so that can be come out by the zone line of the second heat-conducting layer portion 6b, with reference to Fig. 2.When inciting somebody to action
This voice coil structure is applied to middle part when being provided with on the vibrating diaphragm of hollow out, and the zone line of described second heat-conducting layer portion 6b can be from vibrating diaphragm
Void region come out, thus be more beneficial for the heat radiation of heat-conducting layer.
In second specific embodiment of the present invention, described first heat-conducting layer portion 6a and the second heat-conducting layer portion 6b is one
Body, described first thermal insulation layer portion 4a and described second thermal insulation layer portion 4b is one, and described second thermal insulation layer portion 4b is whole
Covering in the whole upper surface of described second heat-conducting layer portion 6b, described first thermal insulation layer portion 4a all covers the first heat-conducting layer portion
6a, described voice coil loudspeaker voice coil body 3 is fixed on the inner surface of the first heat-conducting layer portion 6a, with reference to Fig. 3.
These, it is preferred to, described second thermal insulation layer portion 4b can also be placed only in the periphery position of the second heat-conducting layer portion 6b
Put so that the zone line of the second heat-conducting layer portion 6b can be come out, with reference to Fig. 4.In this voice coil structure is applied to
When portion is provided with on the vibrating diaphragm of hollow out, the zone line of described second heat-conducting layer portion 6b can expose from the void region of vibrating diaphragm
Come, thus be more beneficial for the heat radiation of heat-conducting layer.
In the 3rd specific embodiment of the present invention, described first heat-conducting layer portion 6a and the second heat-conducting layer portion 6b is one
Body, described first thermal insulation layer portion 4a and described second thermal insulation layer portion 4b is one, and described second thermal insulation layer portion 4b is whole
Covering the whole upper surface of described second heat-conducting layer portion 6b, described first thermal insulation layer portion 4a only part covers the first heat-conducting layer portion
6a, described voice coil loudspeaker voice coil body 3 is fixed on the inner surface of the first heat-conducting layer portion 6a, with reference to Fig. 5.First thermal insulation layer portion 4a only part is covered
Cover the first heat-conducting layer portion 6a so that the outer surface being not covered with the first thermal insulation layer portion 4a on the first heat-conducting layer portion 6a can be exposed to
Outward, thus beneficially the heat radiation of heat-conducting layer.
Preferably, described second thermal insulation layer portion 4b can also be placed only in the peripheral position of the second heat-conducting layer portion 6b, makes
Obtain and the zone line of the second heat-conducting layer portion 6b can be come out, with reference to Fig. 6.Arrange when this voice coil structure being applied to middle part
When having on the vibrating diaphragm of hollow out, the zone line of described second heat-conducting layer portion 6b can come out from the void region of vibrating diaphragm, thus
It is more beneficial for the heat radiation of heat-conducting layer.
The voice coil structure of the present invention, in order to form the composite construction of symmetry, described heat-conducting layer is identical with the thickness of thermal insulation layer,
Make heat-conducting layer, the thermal insulation layer can be symmetrical relative to adhesive linkage 5.The thickness of adhesive linkage 5 is not less than the thickness of heat-conducting layer, namely
Saying, the thickness of described adhesive linkage 5 is more than or equal to the thickness of heat-conducting layer so that adhesive linkage 5 provide enough damping restraint with
On the basis of bonding force, reduce the overall weight of composite construction.
Although by example, some specific embodiments of the present invention have been described in detail, but the skill of this area
Art personnel are it should be understood that example above is merely to illustrate rather than in order to limit the scope of the present invention.The skill of this area
Art personnel are it should be understood that can modify to above example without departing from the scope and spirit of the present invention.This
Bright scope is defined by the following claims.
Claims (10)
1. a voice coil structure, including speech coil framework and the voice coil loudspeaker voice coil body (3) being fixed on speech coil framework, it is characterised in that: institute
Stating speech coil framework and include side of sidewall portion (1) and top (2), described speech coil framework includes for constituting described side of sidewall portion (1) and top
(2) and be positioned at one layer of heat-conducting layer of inner side, be positioned at one layer of thermal insulation layer in outside, and it is used for bond described heat-conducting layer and thermal insulation layer
Adhesive linkage (5), described heat-conducting layer includes the first heat-conducting layer portion (6a) being positioned at side of sidewall portion (1) position and is positioned at top (2) position
The the second heat-conducting layer portion (6b) put, described thermal insulation layer includes the first thermal insulation layer portion (4a) being positioned at side of sidewall portion (1) position and is positioned at
Second thermal insulation layer portion (4b) of top (2) position, described voice coil loudspeaker voice coil body (3) is fixed in described first heat-conducting layer portion (6a).
Voice coil structure the most according to claim 1, it is characterised in that: described second thermal insulation layer portion (4b) all covers described
Second heat-conducting layer portion (6b) or described second thermal insulation layer portion (4b) only cover the peripheral position in the second heat-conducting layer portion (6b), described
First thermal insulation layer portion (4a) only part covers the first heat-conducting layer portion (6a), and described voice coil loudspeaker voice coil body (3) is fixed on the first heat-conducting layer portion
(6a) it is not covered with on the outer surface in the first thermal insulation layer portion (4a).
Voice coil structure the most according to claim 1, it is characterised in that: described second thermal insulation layer portion (4b) all covers described
Second heat-conducting layer portion (6b) or described second thermal insulation layer portion (4b) only cover the peripheral position in the second heat-conducting layer portion (6b), described
First thermal insulation layer portion (4a) all covers the first heat-conducting layer portion (6a), and described voice coil loudspeaker voice coil body (3) is fixed on the first heat-conducting layer portion
(6a) on inner surface.
Voice coil structure the most according to claim 1, it is characterised in that: described second thermal insulation layer portion (4b) all covers described
Second heat-conducting layer portion (6b) or described second thermal insulation layer portion (4b) only cover the peripheral position in the second heat-conducting layer portion (6b), described
First thermal insulation layer portion (4a) only part covers the first heat-conducting layer portion (6a), and described voice coil loudspeaker voice coil body (3) is fixed on the first heat-conducting layer portion
(6a) on inner surface.
Voice coil structure the most according to claim 1, it is characterised in that: the position being connected with top (2) at described side of sidewall portion (1)
Put the bending part formed in arc-shaped.
Voice coil structure the most according to claim 1, it is characterised in that: described heat-conducting layer is metal material, described thermal insulation layer
For carbon fibre material or polyimide material.
Voice coil structure the most according to claim 6, it is characterised in that: described heat-conducting layer selects magnesium material or aluminum or magnesium
Aluminum alloy materials.
Structure voice coil structure the most according to claim 1, it is characterised in that: described adhesive linkage (5) is adhesive；
Or described adhesive linkage (5) includes the substrate layer being made up of rubber, thermoplastic elastic material or plastic material, Yi Jishe
Adhesive in substrate layer both sides.
Voice coil structure the most according to claim 1, it is characterised in that: the cross section of described voice coil structure is rectangular, circular
Or kidney-shaped；Described top (2) is flat-head type or middle part convex closure type or middle part hollow type or medial recess type.
10. the vibrational system in a speaker, it is characterised in that: include vibrating diaphragm and as any one of claim 1-9 institute
The voice coil structure stated；The top (2) of described voice coil structure is bonded on vibrating diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702617.7A CN106170115B (en) | 2016-08-18 | 2016-08-18 | Voice coil structure and vibration system in loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702617.7A CN106170115B (en) | 2016-08-18 | 2016-08-18 | Voice coil structure and vibration system in loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106170115A true CN106170115A (en) | 2016-11-30 |
| CN106170115B CN106170115B (en) | 2022-06-14 |
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ID=57375943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610702617.7A Active CN106170115B (en) | 2016-08-18 | 2016-08-18 | Voice coil structure and vibration system in loudspeaker |
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| Country | Link |
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| CN (1) | CN106170115B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111294713A (en) * | 2020-03-13 | 2020-06-16 | 歌尔股份有限公司 | Sound production device and electronic equipment |
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|---|---|---|---|---|
| CN203482385U (en) * | 2013-09-22 | 2014-03-12 | 东莞珀韵电子有限公司 | Voice coil framework using polyimide copper plating material |
| CN203761582U (en) * | 2014-03-19 | 2014-08-06 | 美特科技(苏州)有限公司 | Loudspeaker vibration system and loudspeaker |
| KR20140116272A (en) * | 2013-03-21 | 2014-10-02 | (주) 모토텍 | Diaphragm assembly and speaker device having same |
| CN104780489A (en) * | 2015-03-31 | 2015-07-15 | 歌尔声学股份有限公司 | Structure for detecting vibration displacement of loudspeaker and double-effect device capable of realizing acoustic-electric inter-conversion |
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2016
- 2016-08-18 CN CN201610702617.7A patent/CN106170115B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140116272A (en) * | 2013-03-21 | 2014-10-02 | (주) 모토텍 | Diaphragm assembly and speaker device having same |
| CN203482385U (en) * | 2013-09-22 | 2014-03-12 | 东莞珀韵电子有限公司 | Voice coil framework using polyimide copper plating material |
| CN203761582U (en) * | 2014-03-19 | 2014-08-06 | 美特科技(苏州)有限公司 | Loudspeaker vibration system and loudspeaker |
| CN104780489A (en) * | 2015-03-31 | 2015-07-15 | 歌尔声学股份有限公司 | Structure for detecting vibration displacement of loudspeaker and double-effect device capable of realizing acoustic-electric inter-conversion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111294713A (en) * | 2020-03-13 | 2020-06-16 | 歌尔股份有限公司 | Sound production device and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN106170115B (en) | 2022-06-14 |
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