CN106162462A - A kind of vibrational system in speech coil framework and speaker - Google Patents
A kind of vibrational system in speech coil framework and speaker Download PDFInfo
- Publication number
- CN106162462A CN106162462A CN201610685602.4A CN201610685602A CN106162462A CN 106162462 A CN106162462 A CN 106162462A CN 201610685602 A CN201610685602 A CN 201610685602A CN 106162462 A CN106162462 A CN 106162462A
- Authority
- CN
- China
- Prior art keywords
- coil framework
- bending part
- speech coil
- voice coil
- sidewall portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- 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 speech coil framework and speaker, side of sidewall portion, top define the tubular structure of lower ending opening；Wherein, the position being connected with top at described side of sidewall portion is provided with the bending part connected for transition；Also including the multiple ribs being arranged at described bending part position, the plurality of rib is distributed along the bearing of trend of bending part.Speech coil framework of the present invention, by arranging rib, can improve the structural strength in spinal bend portion, prevents from concentrating due to stress herein and fracture occur；Both can have been increased the bulk strength of skeleton top surrounding by the rib of bending part position, effectively suppression skeleton resonance and the diaphagras of high band, improve the acoustical behavior of speaker；Skeleton can also be increased and connect the intensity in voice coil loudspeaker voice coil face, reduce skeleton resonance in the horizontal direction, such that it is able to prevent voice coil loudspeaker voice coil with skeleton resonance loose wire.
Description
Technical field
The present invention relates to electroacoustic field, more particularly, to a kind of speech coil framework；The invention still further relates in 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
Speech coil framework on the downside of vibrating diaphragm.Voice coil loudspeaker voice coil is mainly played a supportive role by speech coil framework, 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 skeleton sound of integration metal material
Circle design can well expand high frequency performance.But this integration skeleton is relatively concentrated at the position stress of bending, and skeleton is certainly
Stronger resonance problems can be produced in characteristic frequency section；Simultaneously high intensity, work long hours after, skeleton can not due to resonance
Deforming upon disconnectedly and recover deformation, this allows for skeleton and is susceptible to fracture and the generation separation of skeleton voice coil loudspeaker voice coil at its bending part
Risk.
Furthermore, stronger skeleton resonance can drive the deformation on the voice coil loudspeaker voice coil occurred level direction together that binding force is less harmonious
Shake, voice coil loudspeaker voice coil loose wire and skeleton voice coil loudspeaker voice coil separation problem easily occur after working long hours；Meanwhile, the resonance of horizontal direction can make speaker
High frequency characteristics and distortion performance in acoustical behavior are deteriorated.The top of integration skeleton can produce diaphagras when high band
Problem, makes the high frequency performance of speaker be deteriorated；Simultaneously high intensity, work long hours after, there is risk of breakage in skeleton top.
Summary of the invention
It is an object of the present invention to provide the new solution of a kind of speech coil framework.
According to the first aspect of the invention, it is provided that a kind of speech coil framework, including surrounding the side of sidewall portion of hollow cavity, also wrap
Including the top covering described hollow cavity upper end open, described side of sidewall portion, top define the tubular structure of lower ending opening；Its
In, the bending part connected for transition it is provided with top in the position that described side of sidewall portion is connected；Also include being arranged at institute
Stating multiple ribs of bending part position, the plurality of rib is distributed along the bearing of trend of bending part.
Preferably, described rib is to be arranged on outside bending part or the reinforcement of inner side.
Preferably, described rib is that bending part carries out the convex closure structure obtained by punching press；Described convex closure structure from
The inner side of bending part is stretched to outside it；Or, stretch to inside it from the outside of bending part.
Preferably, the two ends of described convex closure structure extend to top, side of sidewall portion from bending part respectively.
Preferably, the plurality of convex closure structure is evenly distributed on the bearing of trend of bending part.
Preferably, the cross sectional shape of described convex closure structure is circular arc.
Preferably, the angle between bearing of trend and the described side of sidewall portion bearing of trend of described convex closure structure be 30 °-
60°。
Preferably, described speech coil framework selects magnesium material or aluminum or magnesium-aluminium alloy material.
Preferably, described side of sidewall portion surrounds rectangular in cross-section or circular or kidney-shaped；Described top be flat-head type or in
Portion's convex closure type or middle part hollow type or medial recess type.
According to a further aspect in the invention, additionally provide the vibrational system in a kind of speaker, including vibrating diaphragm and above-mentioned
Speech coil framework, the side of sidewall portion of speech coil framework is wound with voice coil loudspeaker voice coil；The top adhesive of described speech coil framework is on vibrating diaphragm.
The top of speech coil framework of the present invention is used for being bonded in vibrating diaphragm so that the top of this speech coil framework can be as vibrating diaphragm
Top dome use.By arranging rib, the structural strength in spinal bend portion can be improved, prevent herein owing to stress is concentrated
And fracture occurs；Both can have been increased the bulk strength of skeleton top surrounding by the rib of bending part position, effectively suppress bone
Frame resonance and the diaphagras of high band, improve the acoustical behavior of speaker；Skeleton can also be increased and connect the intensity in voice coil loudspeaker voice coil face,
Reduce skeleton resonance in the horizontal direction, such that it is able to prevent voice coil loudspeaker voice coil with skeleton resonance loose wire.
It was found by the inventors of the present invention that in the prior art, integration skeleton is relatively concentrated at the position stress of bending, skeleton
Stronger resonance problems can be produced from characteristic frequency section；Simultaneously high intensity, work long hours after, skeleton is due to resonance meeting
Be constantly occurring deformation and recover deformation, this allow for skeleton its bending part be susceptible to fracture and skeleton voice coil loudspeaker voice coil separate
Risk.Therefore, the present invention is to be realized technical assignment or to be solved technical problem is that those skilled in the art from
That do not expect or it is not expected that, therefore the present 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 is the structural representation of speech coil framework of the present invention, voice coil loudspeaker voice coil.
Fig. 2 is the profile of Fig. 1.
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 speech coil framework, it includes the hollow cavity surrounded by side of sidewall portion 1, this hollow
The shape of cross section of inner chamber can be rectangle well-known to those skilled in the art, circle or kidney-shaped.At described hollow cavity
Upper end is additionally provided with the top 2 covering its upper end open；The position being connected with top 2 at described side of sidewall portion 1 is provided with bending part 3,
Described top 2 is linked together with side of sidewall portion 1 transition by this bending part 3 so that described side of sidewall portion 1, bending part 3, top 2 are altogether
With the tubular structure defining a lower ending opening.
The speech coil framework of the present invention, also includes the multiple ribs being arranged at described bending part 3 position, the plurality of
Rib is distributed along the bearing of trend of bending part 3.
The speech coil framework of the present invention, described side of sidewall portion 1, bending part 3, top 2 can use identical material, such as
Magnesium material, aluminum, magnesium-aluminium alloy material or other material well-known to those skilled in the art etc. can be used.At this
Bright one preferred embodiment in, described side of sidewall portion 1, bending part 3, top 2 can be one, such as can be to same plate
Material carries out cutting, pressing and bending etc., thus formation is positioned at the top 2 of horizontal direction, is positioned at the side of sidewall portion 1 of vertical direction, and
It is used for the bending part 3 connecting described top 2 with side of sidewall portion 1.Wherein it is preferred that the cross section of described bending part 3 is in the circle of bending
Arcuation so that described side of sidewall portion 1 smoothly can be linked together with top 2 by this bending part 3.
By arranging rib on bending part 3, it is greatly improved the structural strength of whole speech coil framework, in the present invention one
In individual specific embodiment, described rib can be provided in outside bending part 3 or the reinforcement of inner side.Added by this
Strong muscle is greatly improved the structural strength of this bending part 3, thus improves speech coil framework in the horizontal direction and the vertical direction
Intensity.
In another specific embodiment of the present invention, described rib is carry out bending part 3 obtained by punching press convex
Pack arrangement 4, with reference to Fig. 1, Fig. 2.The relevant position of bending part 3 carries out punching press, thus obtains the convex closure structure 4 heaved, institute
The cross sectional shape stating convex closure structure 4 can be circular arc, and the structure being also greatly improved bending part 3 by this convex closure structure 4 is strong
Degree.Described convex closure structure 4 can stretch to outside it from the inner side of bending part 3；Can also be to stretch in it from the outside of bending part 3
Side.Multiple convex closure structures 4 are distributed on the bearing of trend of bending part 3 with preferably dividing equally, thus ensure that the intensity of bending part 3 is equal
Even, consistent.
Described convex closure structure 4 can be positioned only on bending part 3, currently preferred, and the two ends of described bending part 3 are divided
Do not extend to top 2, side of sidewall portion 1 from bending part 3, such that it is able to improve the structural strength of whole speech coil framework further.
In one specific embodiment of the present invention, the side of sidewall portion 1 of speech coil framework, bending part 3, top 2 thickness equal
One；Wherein, the degree of depth of convex closure structure 4 is not more than the 1/5 of side of sidewall portion 1 height, thus ensures that speech coil framework has enough vibrations
Space.
Angle between bearing of trend and described side of sidewall portion 1 bearing of trend of described convex closure structure 4 is preferably 30 ° to 60 °.
Wherein, the quantity of convex closure structure 4 includes but not limited to 20, and the spacing between adjacent two convex closure structures 4 is tied not less than convex closure
5 times of structure 4 diameter；Top 2 plane of convex closure structure 4 and skeleton is preferably in 45 °.Above-mentioned it is merely given as the one of convex closure structure 4
Planting specific embodiment, for a person skilled in the art, arranging of these parameters can be entered according to the actual needs
Row reasonably selects.
The speech coil framework of the present invention may be used on the vibrational system in loudspeaker monomer, to this end, present invention also offers one
Planting the vibrational system in speaker, including vibrating diaphragm and above-mentioned speech coil framework, gluing can be passed through in the top 2 of described speech coil framework
Mode be bonded in the lower end of vibrating diaphragm.The side of sidewall portion 1 of speech coil framework is wound with voice coil loudspeaker voice coil 5 so that voice coil loudspeaker voice coil 5 passes through speech coil framework
Together with being indirectly connected with vibrating diaphragm.Voice coil loudspeaker voice coil 5 can be wrapped in the outside of side of sidewall portion 1, it is possible to is wrapped in the inner side of side of sidewall portion 1, is wound around
The number of plies and height can select according to the actual demand of those skilled in the art.
Described speech coil framework can be that voice coil loudspeaker voice coil 5 provides a good supporting role so that voice coil loudspeaker voice coil 5 can with coiling more
Thin, the voice coil loudspeaker voice coil 5 position on skeleton can also be conveniently adjusted simultaneously, it is achieved thereby that voice coil loudspeaker voice coil 5 regulation of position in magnetic circuit,
This acoustical behavior being conducive to improving loudspeaker monomer.The top 2 of speech coil framework of the present invention is bonded together with vibrating diaphragm so that should
The top 2 of speech coil framework can play the effect of vibrating diaphragm top dome.This top 2 can use flat-head type, middle part convex closure type, middle part recessed
The shape of hollow out in the middle part of swaged or employing, or boss structure can be set on top 2, with reference to Fig. 1, Fig. 2, by this boss
Structure bonds vibrating diaphragm, and these are all several structures that in sounding field, top dome is commonly used, and no longer illustrate at this.
The top of speech coil framework of the present invention is used for being bonded in vibrating diaphragm so that the top of this speech coil framework can be as vibrating diaphragm
Top dome use.By arranging rib, the structural strength in spinal bend portion can be improved, prevent herein owing to stress is concentrated
And fracture occurs；Both can have been increased the bulk strength of skeleton top surrounding by the rib of bending part position, effectively suppress bone
Frame resonance and the diaphagras of high band, improve the acoustical behavior of speaker；Skeleton can also be increased and connect the intensity in voice coil loudspeaker voice coil face,
Reduce skeleton resonance in the horizontal direction, such that it is able to prevent voice coil loudspeaker voice coil with skeleton resonance loose wire.
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 speech coil framework, it is characterised in that: include the side of sidewall portion (1) surrounding hollow cavity, also include covering described hollow
The top (2) of inner chamber upper end open, described side of sidewall portion (1), top (2) define the tubular structure of lower ending opening；Wherein, in institute
State the position that side of sidewall portion (1) is connected with top (2) and be provided with the bending part (3) connected for transition；Also include being arranged at
Multiple ribs of described bending part (3) position, the plurality of rib is distributed along the bearing of trend of bending part (3).
Speech coil framework the most according to claim 1, it is characterised in that: described rib is for being arranged on bending part (3) outside
Or the reinforcement of inner side.
Speech coil framework the most according to claim 1, it is characterised in that: described rib is for carry out punching press to bending part (3)
Obtained convex closure structure (4)；Described convex closure structure (4) stretches to outside it from the inner side of bending part (3)；Or, from bending
The outside in portion (3) is stretched to inside it.
Speech coil framework the most according to claim 3, it is characterised in that: the two ends of described convex closure structure (4) are respectively from bending
Portion (3) extends on top (2), side of sidewall portion (1).
Speech coil framework the most according to claim 3, it is characterised in that: the plurality of convex closure structure (4) is evenly distributed in
On the bearing of trend of bending part (3).
Speech coil framework the most according to claim 3, it is characterised in that: the cross sectional shape of described convex closure structure is circular arc.
Speech coil framework the most according to claim 3, it is characterised in that: the bearing of trend of described convex closure structure and described sidewall
Angle between portion's bearing of trend is 30 ° to 60 °.
Speech coil framework the most according to claim 1, it is characterised in that: described speech coil framework select magnesium material or aluminum or
Magnesium-aluminium alloy material.
Speech coil framework the most according to claim 1, it is characterised in that: rectangular in cross-section that described side of sidewall portion (1) surrounds or
Circle 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 speech coil framework stated, is wound with voice coil loudspeaker voice coil (5) on the side of sidewall portion (1) of speech coil framework；The top (2) of described speech coil framework is bonded in
On vibrating diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685602.4A CN106162462B (en) | 2016-08-18 | 2016-08-18 | A kind of vibrational system in speech coil framework and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685602.4A CN106162462B (en) | 2016-08-18 | 2016-08-18 | A kind of vibrational system in speech coil framework and loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106162462A true CN106162462A (en) | 2016-11-23 |
| CN106162462B CN106162462B (en) | 2019-09-17 |
Family
ID=57330861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610685602.4A Active CN106162462B (en) | 2016-08-18 | 2016-08-18 | A kind of vibrational system in speech coil framework and loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106162462B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807833A (en) * | 2017-01-23 | 2017-06-09 | 重庆市慧冠机电有限公司 | The preparation method and automotive seat forefoot plate of automotive seat forefoot plate |
| CN111935615A (en) * | 2020-06-30 | 2020-11-13 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device and electronic equipment with same |
| WO2021120011A1 (en) * | 2019-12-17 | 2021-06-24 | 瑞声声学科技(深圳)有限公司 | Sound-producing device |
| WO2021135640A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Voice coil for sound producing device and sound producing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1233644A2 (en) * | 2001-02-16 | 2002-08-21 | Pioneer Corporation | Electrically conductive damper device for speaker |
| JP2002271891A (en) * | 2001-03-08 | 2002-09-20 | Kenwood Corp | Voice coil bobbin for speaker |
| EP1351548A2 (en) * | 2002-01-28 | 2003-10-08 | Speaker electronic (Jiashan) Co., Ltd. | A loudspeaker voice coil having a coil fixing mechanism |
| US20090202100A1 (en) * | 2008-02-12 | 2009-08-13 | Victor Company Of Japan, Limited | Voice coil and speaker |
| CN201898607U (en) * | 2010-12-06 | 2011-07-13 | 天津中环真美声学技术有限公司 | Loudspeaker diaphragm assembly with saw-toothed voice coil |
| CN203593521U (en) * | 2013-12-17 | 2014-05-14 | 宁波利之源冲压有限公司 | Lifting bar |
| CN204968092U (en) * | 2015-09-01 | 2016-01-13 | 歌尔声学股份有限公司 | Speaker skeleton voice coil loudspeaker voice coil |
-
2016
- 2016-08-18 CN CN201610685602.4A patent/CN106162462B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1233644A2 (en) * | 2001-02-16 | 2002-08-21 | Pioneer Corporation | Electrically conductive damper device for speaker |
| JP2002271891A (en) * | 2001-03-08 | 2002-09-20 | Kenwood Corp | Voice coil bobbin for speaker |
| EP1351548A2 (en) * | 2002-01-28 | 2003-10-08 | Speaker electronic (Jiashan) Co., Ltd. | A loudspeaker voice coil having a coil fixing mechanism |
| US20090202100A1 (en) * | 2008-02-12 | 2009-08-13 | Victor Company Of Japan, Limited | Voice coil and speaker |
| CN201898607U (en) * | 2010-12-06 | 2011-07-13 | 天津中环真美声学技术有限公司 | Loudspeaker diaphragm assembly with saw-toothed voice coil |
| CN203593521U (en) * | 2013-12-17 | 2014-05-14 | 宁波利之源冲压有限公司 | Lifting bar |
| CN204968092U (en) * | 2015-09-01 | 2016-01-13 | 歌尔声学股份有限公司 | Speaker skeleton voice coil loudspeaker voice coil |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807833A (en) * | 2017-01-23 | 2017-06-09 | 重庆市慧冠机电有限公司 | The preparation method and automotive seat forefoot plate of automotive seat forefoot plate |
| CN106807833B (en) * | 2017-01-23 | 2019-10-08 | 重庆市慧冠机电有限公司 | The production method of automotive seat forefoot plate |
| WO2021120011A1 (en) * | 2019-12-17 | 2021-06-24 | 瑞声声学科技(深圳)有限公司 | Sound-producing device |
| WO2021135640A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Voice coil for sound producing device and sound producing device |
| CN111935615A (en) * | 2020-06-30 | 2020-11-13 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device and electronic equipment with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106162462B (en) | 2019-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106162462A (en) | A kind of vibrational system in speech coil framework and speaker | |
| CN106899918B (en) | Loudspeaker vibrating plate, manufacturing method thereof and loudspeaker comprising loudspeaker vibrating plate | |
| CN101690260B (en) | Loudspeaker with a stiffening element | |
| CN105765995B (en) | Loudspeaker | |
| CN107396256A (en) | Loudspeaker enclosure | |
| CN106255013B (en) | Voice coil structure | |
| CN208597163U (en) | The vibration membrane structure of loudspeaker | |
| US6735323B1 (en) | Speaker | |
| CN206024096U (en) | A kind of voice coil structure | |
| JP6275793B1 (en) | Speaker | |
| CN105246006A (en) | Surround with anisotropic compliance of loudspeaker and passive radiator | |
| JP2007174603A (en) | Method of manufacturing edge for loudspeaker | |
| CN105516869B (en) | Electroacoustic transducer | |
| US6792127B1 (en) | Elliptical dome for high frequency transducer | |
| CN202068567U (en) | Bass loudspeaker | |
| CN201699954U (en) | High-sensitivity vibrating membrane of electroacoustic transducer | |
| JPH11150790A (en) | Speaker | |
| CN108551634A (en) | A kind of coaxial ribbon speaker of Whole frequency band | |
| CN208227307U (en) | The one coaxial loudspeaking component of type spherical surface Whole frequency band | |
| WO2021135640A1 (en) | Voice coil for sound producing device and sound producing device | |
| US20090046888A1 (en) | Speaker | |
| CN207399504U (en) | A kind of loudspeaker and its sound basin | |
| CN208509249U (en) | A kind of loudspeaker of cone stable connection | |
| JP2005168001A (en) | Tweeter | |
| US10932026B2 (en) | Broadband electrodynamic transducer for headphones, and associated headphones |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |