CN207200969U - Loudspeaker monomer - Google Patents
Loudspeaker monomer Download PDFInfo
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- CN207200969U CN207200969U CN201721021813.4U CN201721021813U CN207200969U CN 207200969 U CN207200969 U CN 207200969U CN 201721021813 U CN201721021813 U CN 201721021813U CN 207200969 U CN207200969 U CN 207200969U
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- voice coil
- loudspeaker
- coil
- vibrating diaphragm
- excitation
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Abstract
It the utility model is related to a kind of loudspeaker monomer.The loudspeaker monomer includes vibration component and magnetic circuit component, vibration component includes vibrating diaphragm and voice coil loudspeaker voice coil, vibrating diaphragm is suspended at the top of magnetic circuit component, two line ends head and the tail of voice coil loudspeaker voice coil connect, to form closed-loop path, one end of voice coil loudspeaker voice coil is connected with vibrating diaphragm, and the other end of voice coil loudspeaker voice coil is inserted in the permanent magnetic field formed by magnetic circuit system；Also include excitation coil, excitation coil electrically connects with external circuit, and excitation coil is configured to encourage voice coil loudspeaker voice coil, so that voice coil loudspeaker voice coil produces induced-current.A technical problem to be solved in the utility model is that the lead of the voice coil loudspeaker voice coil of existing coil-moving speaker is vacantly set, the shortcomings of causing product polarization, lead abnormal sound, low space utilization.One purposes of utility model is to improve the sound effect of loudspeaker monomer.
Description
Technical field
Electroacoustic switch technology field is the utility model is related to, more specifically, the utility model is related to a kind of loudspeaker monomer.
Background technology
The design of moving-coil type Microspeaker reaches its maturity.However, this loudspeaker has the following disadvantages：
1st, the lead of voice coil loudspeaker voice coil is vacantly set, and lead passes through the electrical connection of pad and external circuit.Because lead is hanging,
Vibrational system, magnetic circuit system or shell need to be avoided for lead.Avoiding design needs to take very big space, causes
Waste spatially, and cause the complex designing of loudspeaker.
2nd, because the lead of voice coil loudspeaker voice coil is vacantly set, therefore vibrating diaphragm polarization is easily caused, influences the sound effect of loudspeaker monomer.
Polarization is as caused by lead sets asymmetry.However, in existing loudspeaker monomer, voice coil loudspeaker voice coil is needed by lead and external electrical
Road turns on, and can not so avoid asymmetric setting.
3rd, because hanging lead participates in vibrating, abnormal sound is inevitably sent, causes whole product dystimbria.
Utility model content
A purpose of the present utility model is to provide a kind of new solution of loudspeaker monomer.
According to one side of the present utility model, there is provided a kind of loudspeaker monomer.The loudspeaker monomer includes vibration component
With magnetic circuit component, the vibration component includes vibrating diaphragm and voice coil loudspeaker voice coil, and the vibrating diaphragm is suspended at the top of the magnetic circuit component, the sound
Circle two line ends head and the tail connect, to form closed-loop path, one end of the voice coil loudspeaker voice coil is connected with the vibrating diaphragm, the voice coil loudspeaker voice coil it is another
One end is inserted in the permanent magnetic field formed by the magnetic circuit system；Also include excitation coil, the excitation coil and external circuit electricity
Connection, the excitation coil are configured to encourage the voice coil loudspeaker voice coil, so that the voice coil loudspeaker voice coil produces induced-current.
Alternatively, the excitation coil is parallel with the voice coil loudspeaker voice coil, in vertical projection, region that the excitation coil surrounds
At least a portion in the region surrounded with the voice coil loudspeaker voice coil overlaps.
Alternatively, the excitation coil is arranged on the outside of the voice coil loudspeaker voice coil, either
The voice coil loudspeaker voice coil is arranged on the outside of the excitation coil.
Alternatively, the excitation coil is coaxially disposed with the voice coil loudspeaker voice coil.
Alternatively, the magnetic circuit system includes conductive magnetic yoke and the center magnet and side magnetic that are arranged in the conductive magnetic yoke
Iron, the side magnet are set around the centring magnet, and the permanent magnetism is formed between the centring magnet and the side magnet
, the side magnet is annular magnet.
Alternatively, in addition to center magnetic conductive board and side magnetic conductive board, the center magnetic conductive board are arranged on the centring magnet
Top, the top of the magnet when magnetic conductive board is arranged on described, the permanent magnetic field be formed at the center magnetic conductive board with
Between the magnetic conductive board of side, the side magnetic conductive board is loop configuration.
Alternatively, the excitation coil is arranged on the top of the side magnetic conductive board, and the edge part of the vibrating diaphragm is fixed on
The top of the excitation coil.
Alternatively, the loudspeaker monomer also includes shell, and the shell houses the fixed vibration component and magnetic circuit group
Part, the edge part of the vibrating diaphragm are fixed on the top of the excitation coil, and the excitation coil is installed on the upper end of the shell
On face；
Or the edge part of the vibrating diaphragm is fixed on the upper surface of the shell, the excitation coil is installed on described shake
The top of the edge part of film.
Alternatively, in addition to protecgulum, the protecgulum are arranged on the top of the vibrating diaphragm, and the excitation coil is installed on institute
State the side of the direction vibrating diaphragm of protecgulum.
Alternatively, in addition to protecgulum, the protecgulum are arranged on the top of the vibrating diaphragm, and weldering is provided with the protecgulum
Disk, the lead of the excitation coil electrically connect with the pad.
One of the present utility model has technical effect that, two line ends head and the tail of voice coil loudspeaker voice coil connect, to form closed-loop path.By
It is not vacantly to set in the lead of voice coil loudspeaker voice coil, and lead is not connected with external circuit, therefore the miscellaneous part of loudspeaker monomer is not required to
Avoidance design is carried out, this causes the structure design of loudspeaker monomer to become simple, and the volume of loudspeaker monomer reduces.
Further, since the lead of voice coil loudspeaker voice coil is not vacantly to set, therefore the symmetry of vibration component, especially vibrating diaphragm improves.This
Sample can effectively reduce or even avoid vibrating diaphragm from polarizing.
Further, since the lead of voice coil loudspeaker voice coil is not vacantly to set, lead need not be stretched out outside voice coil loudspeaker voice coil, therefore loudspeaker monomer
Noise is small, and sound effect is good.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature and its advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing of a part for constitution instruction describes embodiment of the present utility model, and uses together with the description
In explanation principle of the present utility model.
Fig. 1 is the sectional view according to the loudspeaker monomer of one embodiment of the present utility model.
Fig. 2 is the exploded view according to the loudspeaker monomer of one embodiment of the present utility model.
Description of reference numerals：
11：Protecgulum；12：Vibrating diaphragm；13：Voice coil loudspeaker voice coil；14：Excitation coil；15：Center magnetic conductive board；16：Side magnetic conductive board；17：Center
Magnet；18：Side magnet；19：Magnetic gap；20：Conductive magnetic yoke；21：Frame；22：Supporting leg；23：Pad；24：Oscillation space.
Embodiment
Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：It is unless another
Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.
It may be not discussed in detail for technology and equipment known to person of ordinary skill in the relevant, but in appropriate situation
Under, the technology and equipment should be considered as part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the sectional view according to the loudspeaker monomer of one embodiment of the present utility model.Fig. 2 is new according to this practicality
The exploded view of the loudspeaker monomer of one embodiment of type.
According to one embodiment of the present utility model, there is provided a kind of loudspeaker monomer.As shown in Figure 1-2, the monomer bag
Include vibration component and magnetic circuit component.Magnetic circuit component is used to form permanent magnetic field.Vibration component includes vibrating diaphragm 12 and voice coil loudspeaker voice coil 13.For example,
Vibrating diaphragm 12 is ring vibrating diaphragm 12 or plane diaphragm 12.For convenience of explanation, in this embodiment by taking ring vibrating diaphragm 12 as an example.
Ring vibrating diaphragm 12 includes central part, around the ring portion that central part is set and the edge set around ring portion
Portion.Optionally, ring vibrating diaphragm 12 is circular, rectangle or track type.
Vibrating diaphragm 12 is suspended at the top of magnetic circuit component.For example, the edge part of ring vibrating diaphragm 12 is directly or indirectly fixed
In the top of magnetic circuit system.Ring portion and central part with magnetic circuit system interval.Two line ends head and the tail of voice coil loudspeaker voice coil 13 connect, with shape
Into closed-loop path.By forming closed-loop path, when being activated that coil 14 encourages, voice coil loudspeaker voice coil 13 can form induced-current.
One end of voice coil loudspeaker voice coil 13 is connected with vibrating diaphragm 12, and the other end of voice coil loudspeaker voice coil 13 is inserted in the permanent magnetic field formed by magnetic circuit system.
For example, one end of voice coil loudspeaker voice coil 13 is bonded in the central part of vibrating diaphragm by binding agent.
Loudspeaker monomer also includes excitation coil 14.Excitation coil 14 electrically connects with external circuit.Excitation coil 14 is by structure
Make as encouraging voice coil loudspeaker voice coil 13, so that voice coil loudspeaker voice coil 13 produces induced-current.For example, excitation coil 14 receives the electric signal of external circuit
And produce variation magnetic field.Voice coil loudspeaker voice coil 13 is in variation magnetic field.According to Faraday's electromagnetic induction law, the voice coil loudspeaker voice coil 13 of closure produces sense
Induced current.The voice coil loudspeaker voice coil 13 of energization is vibrated in permanent magnetic field by the effect of Ampere force.The vibration of voice coil loudspeaker voice coil 13 drives vibrating diaphragm 12
Vibration, to send sound.
The position that those skilled in the art can set excitation coil 14 according to being actually needed, as long as can produce voice coil loudspeaker voice coil 13
Raw induced-current.
In the utility model embodiment, two line ends head and the tail of voice coil loudspeaker voice coil 13 connect, to form closed-loop path.Due to voice coil loudspeaker voice coil
13 lead is not vacantly to set, and lead is not connected with external circuit, therefore the miscellaneous part of loudspeaker monomer need not enter
Row avoids design, and this causes the structure design of loudspeaker monomer to become simple, and the volume of loudspeaker monomer reduces.
Further, since the lead of voice coil loudspeaker voice coil 13 is not vacantly to set, therefore vibration component, the symmetry of especially vibrating diaphragm 12 carry
It is high.So it can effectively reduce or even avoid vibrating diaphragm 12 from polarizing.
Further, since the lead of voice coil loudspeaker voice coil 13 is not vacantly to set, lead need not be stretched out outside voice coil loudspeaker voice coil 13, therefore loudspeaker list
The noise of body is small, and sound effect is good.
In one example, excitation coil 14 is parallel with voice coil loudspeaker voice coil 13.In vertical projection, region that excitation coil 14 surrounds
The projection at least a portion perpendicular to axial direction in the region surrounded with voice coil loudspeaker voice coil 13 overlaps.It is parallel to refer to excitation coil 14 and voice coil loudspeaker voice coil 13
Direction of routing it is parallel.
Optionally, excitation coil 14 and voice coil loudspeaker voice coil 13 are circular, rectangle or track type.In this embodiment, such as Fig. 2 institutes
Show, excitation coil 14 and voice coil loudspeaker voice coil 13 are rectangle.In this configuration, the sounding effect of loudspeaker monomer is more preferable.
Axial direction is the direction of the axis extension of excitation coil 14 and voice coil loudspeaker voice coil 13.For example, the axis and voice coil loudspeaker voice coil of excitation coil 14
13 diameter parallel.The projection section or whole perpendicular to axial direction of excitation coil 14 and voice coil loudspeaker voice coil 13 overlap.
In this way, set compared to excitation coil 14 and voice coil loudspeaker voice coil 13 into other angles, when the two be arranged in parallel,
Magnetic induction line through voice coil loudspeaker voice coil 13 is more, and such voice coil loudspeaker voice coil 13 produces induced-current can be bigger.
Preferably, for example, excitation coil 14 is arranged on the outside of voice coil loudspeaker voice coil 13.As shown in figure 1,14 sets of excitation coil
It is located at the outside of voice coil loudspeaker voice coil 13.Therebetween there is gap, to prevent from interfering when voice coil loudspeaker voice coil 13 vibrates.Pass through this side
Formula, voice coil loudspeaker voice coil 13 are fully located in the magnetic field of excitation coil 14 so that induced-current is bigger.
Either, for example, voice coil loudspeaker voice coil 13 is arranged on the outside (not shown) of excitation coil 14, therebetween with gap
To prevent from interfering when voice coil loudspeaker voice coil 13 vibrates.This setup, voice coil loudspeaker voice coil 13 can be equally set to produce induced-current.
In addition, both set-up modes take full advantage of installing space, the volume of loudspeaker monomer can be made smaller.
Further, excitation coil 14 is coaxially disposed with voice coil loudspeaker voice coil 13.For example, as shown in figure 1, the axis of excitation coil 14 with
The axis of voice coil loudspeaker voice coil 13 overlaps.In this way, the symmetry of excitation coil 14 and voice coil loudspeaker voice coil 13 is more preferable so that induced-current is more
Greatly.
In addition, this setup can effectively prevent the generation of the polarization of vibrating diaphragm 12.
In one example, magnetic circuit system includes conductive magnetic yoke 20 and the center magnet and side magnetic that are arranged in conductive magnetic yoke 20
Iron 18.Side magnet 18 is set around centring magnet 17.Permanent magnetic field, side magnet 18 are formed between centring magnet 17 and side magnet 18
For annular magnet.
For example, as shown in Fig. 2 conductive magnetic yoke 20 is the laminated structure of rectangle.Centring magnet 17 is rectangle.Side magnet 18 is overall
Rectangular ring-type.Centring magnet 17 and side magnet 18 are axial charging.Centring magnet 17 and side magnet 18 are fixed on conductive magnetic yoke
On 20.
Conductive magnetic yoke 20 plays magnetic conduction effect.Conductive magnetic yoke 20 makes magnetic circuit component form closed magnetic circuit, and can gather center magnetic
The magnetic induction line of iron 17 and side magnet 18, improve the magnetic induction of permanent magnetic field.Permanent magnetic field is formed in centring magnet 17 and side magnet 18
Between magnetic gap 19 in.By the setting of centring magnet 17 and side magnet 18, the magnetic induction of permanent magnetic field is higher so that raises one's voice
The vibration sensitivity of device monomer is higher.
In addition, annular magnet has bigger area so that BL (B：The magnetic induction of permanent magnetic field；L：Voice coil loudspeaker voice coil 13 it is effective
Length) value is big, and induced-current is bigger, and the vibration sensitivity of loudspeaker monomer is higher.
(not shown) in other examples, side magnet 18 are enclosed by multiple bar magnets or arc-shaped magnet and formed.It is this
Structure equally can form permanent magnetic field together with centring magnet 17.
Further, loudspeaker monomer also includes center magnetic conductive board 15 and side magnetic conductive board 16.As shown in figure 1, center magnetic conduction
Plate 15 is arranged on the top of centring magnet 17.The top of magnet 18 when magnetic conductive board 16 is arranged on.During permanent magnetic field is formed at
Between heart magnetic conductive board 15 and side magnetic conductive board 16.Side magnetic conductive board 16 is loop configuration.Center magnetic conductive board 15 and side magnetic conductive board 16 can rise
To the effect for gathering magnetic induction line, so that the magnetic induction of permanent magnetic field is higher.In this way, loudspeaker monomer can be heightened
Vibration sensitivity.
Preferably, excitation coil 14 is arranged on the top of side magnetic conductive board 16.The edge part of vibrating diaphragm 12 is fixed on excitation
The top of coil 14.As shown in figure 1, for example, excitation coil 14 is bonded in by the top of side magnetic conductive board 16, and general by binding agent
The edge part of vibrating diaphragm 12 is adhered to the top of excitation coil 14.The ring portion of vibrating diaphragm 12 be located at excitation coil 14 and voice coil loudspeaker voice coil 13 it
Between.In this way, the more compact structure of loudspeaker monomer, volume is smaller, has complied with the lightening development of electronic product and has become
Gesture.
Optionally, loudspeaker monomer also includes shell.Shell houses fixed vibration component and magnetic circuit component.Vibrating diaphragm 12
Edge part is fixed on the top of excitation coil 14.Excitation coil 14 is installed on the upper surface of shell；
Or the edge part of vibrating diaphragm 12 is fixed on the upper surface of shell.Excitation coil 14 is installed on the edge of vibrating diaphragm 12
The top in portion.By both mounting means, excitation coil 14 can produce incentive action to voice coil loudspeaker voice coil.
(not shown) in other examples, magnetic circuit system can also be inner magnetic structure or outer magnetic structure.Inner magnetic structure is
Magnet is located in U-shaped conductive magnetic yoke 20.Permanent magnetic field is formed between the side wall of U-shaped conductive magnetic yoke 20 and magnet.Outer magnetic structure is annular
Magnet is set in the outside of the stem of T iron.Permanent magnetic field is formed between stem and annular magnet.Both structures can be formed forever
Magnetic field, to drive voice coil loudspeaker voice coil 13 to vibrate.
In one example, loudspeaker monomer also includes protecgulum 11.Protecgulum 11 is arranged on the top of vibrating diaphragm 12.Excitation line
Circle 14 is installed on the side towards vibrating diaphragm 12 of protecgulum 11.So, excitation coil 14 is close to voice coil loudspeaker voice coil 13.The excitation of excitation coil 14 is made
With more notable.
In addition, pad 23 is provided with protecgulum 11.The lead of excitation coil 14 electrically connects with pad 23.Pad 23 with it is outer
Portion's circuit turn-on.In this way, the electrical connection of excitation coil 14 and external circuit is more convenient, and electric signal transmission is more accurate
Really.
For example, as shown in Fig. 2 protecgulum 11 is the ring-type of rectangle.The frame 21 of protecgulum 11 has supporting leg 22, and supporting leg 22 is located at
4 corners of frame 21.Protecgulum 11 is bonded together by the edge part of supporting leg 22 and vibrating diaphragm 12, with protecgulum 11 and central part
Between formed oscillation space 24.The middle part of protecgulum 11 is relative with the central part of vibrating diaphragm 12.Pad 23 is arranged on the side of protecgulum 11
On frame 21.Pad 23 is 2, and the lead with excitation coil 14 corresponds respectively.
Preferably, pad 23 is embedded in the frame 21 of protecgulum 11 by way of insert injection moulding.So, pad 23
It is more firm with the connection of protecgulum 11.In assembling, lead and the pad 23 of excitation coil 14 weld together.Pass through this side
Formula, the lead of excitation coil 14 can be made not exposed.
Although some specific embodiments of the present utility model are described in detail by example, this area
It is to be understood by the skilled artisans that above example merely to illustrate, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case of, to above example
Modify.The scope of the utility model is defined by the following claims.
Claims (10)
1. a kind of loudspeaker monomer, it is characterised in that including vibration component and magnetic circuit component, the vibration component includes vibrating diaphragm
(12) and voice coil loudspeaker voice coil (13), the vibrating diaphragm (12) are suspended at the top of the magnetic circuit component, two line end head of the voice coil loudspeaker voice coil (13)
Tail connect, to form closed-loop path, one end of the voice coil loudspeaker voice coil (13) is connected with the vibrating diaphragm (12), the voice coil loudspeaker voice coil (13) it is another
End is inserted in the permanent magnetic field formed by the magnetic circuit system；
Also include excitation coil (14), the excitation coil (14) electrically connects with external circuit, and the excitation coil (14) is by structure
Make as encouraging the voice coil loudspeaker voice coil (13), so that the voice coil loudspeaker voice coil (13) produces induced-current.
2. loudspeaker monomer according to claim 1, it is characterised in that the excitation coil (14) and the voice coil loudspeaker voice coil (13)
It is parallel, in vertical projection, at least the one of region that region and the voice coil loudspeaker voice coil (13) that the excitation coil (14) surrounds surround
Partially overlap.
3. loudspeaker monomer according to claim 2, it is characterised in that the excitation coil (14) is arranged on the sound
The outside of (13) is enclosed, either
The voice coil loudspeaker voice coil (13) is arranged on the outside of the excitation coil (14).
4. loudspeaker monomer according to claim 3, it is characterised in that the excitation coil (14) and the voice coil loudspeaker voice coil (13)
It is coaxially disposed.
5. loudspeaker monomer according to claim 1, it is characterised in that the magnetic circuit system include conductive magnetic yoke (20) and
The center magnet and side magnet (18) being arranged in the conductive magnetic yoke (20), the side magnet (18) surround the centring magnet
(17) set, the permanent magnetic field, the side magnet (18) are formed between the centring magnet (17) and the side magnet (18)
For annular magnet.
6. loudspeaker monomer according to claim 5, it is characterised in that also including center magnetic conductive board (15) and side magnetic conductive board
(16), the center magnetic conductive board (15) is arranged on the top of the centring magnet (17), and the side magnetic conductive board (16) is set
In the top of the side magnet (18), the permanent magnetic field is formed between the center magnetic conductive board (15) and side magnetic conductive board (16),
The side magnetic conductive board (16) is loop configuration.
7. loudspeaker monomer according to claim 6, it is characterised in that the excitation coil (14) is arranged on the side
The top of magnetic conductive board (16), the edge part of the vibrating diaphragm (12) are fixed on the top of the excitation coil (14).
8. loudspeaker monomer according to any one of claims 1 to 6, it is characterised in that the loudspeaker monomer also includes outer
Shell, the shell house the fixed vibration component and magnetic circuit component, the edge part of the vibrating diaphragm (12) and are fixed on the excitation
The top of coil (14), the excitation coil (14) are installed on the upper surface of the shell；
Or the edge part of the vibrating diaphragm (12) is fixed on the upper surface of the shell, the excitation coil (14) is installed on institute
State the top of the edge part of vibrating diaphragm (12).
9. loudspeaker monomer according to any one of claims 1 to 6, it is characterised in that also including protecgulum (11), the protecgulum
(11) top of the vibrating diaphragm (12) is arranged on, the excitation coil (14), which is installed on described in the direction of the protecgulum (11), to be shaken
The side of film (12).
10. loudspeaker monomer according to any one of claims 1 to 6, it is characterised in that also including protecgulum (11), before described
Lid (11) is arranged on the top of the vibrating diaphragm (12), and pad (23), the excitation coil are provided with the protecgulum (11)
(14) lead electrically connects with the pad (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721021813.4U CN207200969U (en) | 2017-08-15 | 2017-08-15 | Loudspeaker monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721021813.4U CN207200969U (en) | 2017-08-15 | 2017-08-15 | Loudspeaker monomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200969U true CN207200969U (en) | 2018-04-06 |
Family
ID=61797472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721021813.4U Active CN207200969U (en) | 2017-08-15 | 2017-08-15 | Loudspeaker monomer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207200969U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151682A (en) * | 2018-08-31 | 2019-01-04 | 汉得利（常州）电子股份有限公司 | A kind of two-in-one driver of ultra-thin micro |
| CN110267179A (en) * | 2019-07-16 | 2019-09-20 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| WO2021258653A1 (en) * | 2020-06-22 | 2021-12-30 | 歌尔股份有限公司 | Loudspeaker and earphone |
-
2017
- 2017-08-15 CN CN201721021813.4U patent/CN207200969U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151682A (en) * | 2018-08-31 | 2019-01-04 | 汉得利（常州）电子股份有限公司 | A kind of two-in-one driver of ultra-thin micro |
| CN110267179A (en) * | 2019-07-16 | 2019-09-20 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| WO2021258653A1 (en) * | 2020-06-22 | 2021-12-30 | 歌尔股份有限公司 | Loudspeaker and earphone |
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