CN207070337U - Miniature sound-producing device - Google Patents
Miniature sound-producing device Download PDFInfo
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- CN207070337U CN207070337U CN201720788439.4U CN201720788439U CN207070337U CN 207070337 U CN207070337 U CN 207070337U CN 201720788439 U CN201720788439 U CN 201720788439U CN 207070337 U CN207070337 U CN 207070337U
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- Prior art keywords
- voice coil
- magnetic
- vibrating diaphragm
- sound
- circuit system
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Abstract
It the utility model is related to a kind of miniature sound-producing device.The miniature sound-producing device includes：Vibrating diaphragm；First voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil, first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are connected to the both sides of the vibrating diaphragm；First magnetic circuit system and the second magnetic circuit system, formed with the first magnetic gap in first magnetic circuit system, first voice coil loudspeaker voice coil is corresponding with the position of first magnetic gap, corresponding with the position of second magnetic gap formed with the second magnetic gap, second voice coil loudspeaker voice coil in second magnetic circuit system；Housing, the housing are configurable for carrying the vibrating diaphragm, the first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil and the first magnetic circuit system and the second magnetic circuit system.A technical problem to be solved in the utility model is that the sensitivity of existing sound-producing device is difficult to improve.
Description
Technical field
The utility model belongs to speaker technology field, specifically, the utility model is related to a kind of miniature sound-producing device.
Background technology
In recent years, as the equipment such as smart mobile phone, tablet personal computer are widely used, the correlation of consumer electronics product
Technology is quickly grown.Those skilled in the art gradually improve the performance of each parts in product, so as to improve consumer electronics production
The overall performance of product, improve the application experience of user.
Sound-producing device is indispensable accessory in consumer electronics product, and it is widely used in the receiver of mobile phone, raised one's voice
Device and earphone.What is wherein at most applied is moving-coil type sound-producing device.But with the design day of moving-coil type generating means
Become ripe, the improvement of its performance technologies has also reached bottleneck, it is difficult to makes further improvement.
But on the other hand, requirement more and more higher of the consumer to electronic product performance, it is desirable to which sound-producing device has more preferable
Acoustical behavior.Wherein, sensitivity is important acoustical behavior index, and the sensitivity of sound-producing device is higher, for rated voltage
Voice signal can preferably make accordingly, send the enough sound of volume.So how to make full use of existing sound-producing device
In space, be the big technical barrier that this area faces to obtain higher sensitivity.
Utility model content
A purpose of the present utility model is to provide a kind of improved miniature sound-producing device.
According to one side of the present utility model, there is provided a kind of miniature sound-producing device, including：
Vibrating diaphragm；
First voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil, first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are connected to the both sides of the vibrating diaphragm；
First magnetic circuit system and the second magnetic circuit system, formed with the first magnetic gap in first magnetic circuit system, described
One voice coil loudspeaker voice coil is corresponding with the position of first magnetic gap, formed with the second magnetic gap in second magnetic circuit system, described
Two voice coil loudspeaker voice coils are corresponding with the position of second magnetic gap；
Housing, the housing are configurable for carrying the vibrating diaphragm, the first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil and the first magnetic circuit
System and the second magnetic circuit system.
Alternatively, first magnetic circuit system includes the first centring magnet, the first center magnetic conductive board and the first yoke, described
First centring magnet is arranged on the side of the vibrating diaphragm, and the central area position correspondence with the vibrating diaphragm, first yoke is set
Put and be arranged on first center in the side of the remote vibrating diaphragm of first centring magnet, first center magnetic conductive board
The side of the close vibrating diaphragm of magnet, first magnetic gap are located at the outside of the side wall of first centring magnet.
Alternatively, first yoke has yoke side wall, between the yoke side wall and the side wall of the first centring magnet
Region form first magnetic gap.
Alternatively, second magnetic circuit system include second in magnet, second magnetic conductive board and the second yoke, described second
Side magnet is arranged on the side of the vibrating diaphragm, the fringe region position correspondence with the vibrating diaphragm, and second side magnetic conductive board is set
In second side magnet close to the side of the vibrating diaphragm, second yoke is arranged on second side magnet and shaken away from described
The side of film, second magnetic gap are located at the inner side of the side wall of second side magnet.
Alternatively, there is annular folded walls, the annular folded walls and the side of the second side magnet among second yoke
Region between wall forms second magnetic gap, and the annular folded walls surround going out for hollow out in the centre of second yoke
Sound mouth.
Alternatively, it is provided with annular magnet in the annular folded walls.
Alternatively, the vibrating diaphragm has central part, ring portion and a fixed part, and the ring portion is by the central part and fixation
Portion connects, and on the housing, first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are connected to the central part for the fixed part connection
Both side surface on.
Alternatively, second magnetic circuit system include second in magnet and second magnetic conductive board, second side magnetic conductive board
It is arranged on the fixed part, described second when magnet is arranged on described second on magnetic conductive board, and the ring portion is to away from institute
State the side bending of the second side magnetic conductive board.
Alternatively, have in the housing and accommodate area, the vibrating diaphragm is arranged in the receiving area, and the vibrating diaphragm is by described in
Accommodate differentiation and be segmented into the rear operatic tunes and preceding sound area, first magnetic circuit system is set in the operatic tunes in the rear, the second magnetic circuit system
System is arranged at the preceding sound area, has outlet sound mouth on second magnetic circuit system, when the outlet sound mouth supplies the diaphragm oscillations
Caused sound is spread out of from the housing.
Alternatively, first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil form the circuit structure of serial or parallel connection, first voice coil loudspeaker voice coil and
Second voice coil loudspeaker voice coil is configured as receiving identical voice signal.
One of the present utility model has technical effect that, the sensitivity of miniature sound-producing device of the present utility model is relative to existing
Some sound-producing devices are obviously improved.
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 side sectional view for the miniature sound-producing device that a kind of embodiment of the present utility model provides；
Fig. 2 is Fig. 1 partial enlarged drawing.
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.
The utility model provides a kind of improved miniature sound-producing device, and the miniature sound-producing device includes vibrating diaphragm：First sound
Circle and the second voice coil loudspeaker voice coil, the first magnetic circuit system and the second magnetic circuit system and housing.The housing is used to carry above-mentioned miniature sounding
All parts in device, the vibrating diaphragm are arranged in the housing.Especially, it is both provided with the both side surface of the vibrating diaphragm
Voice coil loudspeaker voice coil.First voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are connected in the both side surface of the vibrating diaphragm.
Formed with the first magnetic gap in first magnetic circuit system, then formed with the second magnetic gap in the second magnetic circuit system.
Above-mentioned magnetic gap is the field region formed by magnetic circuit system, and in sound-producing device, voice coil loudspeaker voice coil is typically located in magnetic gap.Work as voice coil loudspeaker voice coil
In when being passed through voice signal, the magnetic field at magnetic gap can drive voice coil loudspeaker voice coil to move.Especially, first voice coil loudspeaker voice coil and described first
The position of magnetic gap is corresponding, and second voice coil loudspeaker voice coil is corresponding with the position of second magnetic gap.So, when in the first voice coil loudspeaker voice coil
When being passed through voice signal, the first voice coil loudspeaker voice coil can make the first voice coil loudspeaker voice coil drive vibrating diaphragm to move with the magnetic field interaction at the first magnetic gap
It is dynamic；Correspondingly, when being passed through voice signal in the second voice coil loudspeaker voice coil, the second voice coil loudspeaker voice coil can be with the magnetic field phase interaction at the second magnetic gap
With making the second voice coil loudspeaker voice coil also drive vibrating diaphragm to move.
In miniature sound-producing device provided by the utility model, the vibrating diaphragm can be common by the first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil
Drive is vibrated.First magnetic circuit system and the second magnetic circuit system are separate, respectively to the first voice coil loudspeaker voice coil and second
Voice coil loudspeaker voice coil forms driving effect.Under the driving effect of two sets of magnetic circuit systems and two voice coil loudspeaker voice coils, sensitivity obtains significantly the vibrating diaphragm
Raising.Correspondingly, the sensitivity of miniature sound-producing device provided by the utility model is relative to existing moving-coil type sound-producing device
Have and be obviously improved.In the voltagerating of the voice signal of input, the miniature sound-producing device can make more preferable response,
The wave volume sent is bigger.
First voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are located in the both side surface of the vibrating diaphragm respectively, correspondingly, first magnetic
Road system and the second magnetic circuit system can also be respectively arranged at the both sides of the vibrating diaphragm, in order to make first voice coil loudspeaker voice coil stretch into institute
State the first magnetic gap；The second voice coil loudspeaker voice coil is set to stretch into the second magnetic gap.First magnetic circuit system and the second magnetic circuit system can be fixed
Set on the housing.The utility model is not limited the set-up mode of two magnetic circuit systems, can be according to specific
Performance selected and adjusted.
Alternatively, in embodiment as shown in Figure 1, first magnetic circuit system can include the first centring magnet
41st, the first center magnetic conductive board 42 and the first yoke 43.First centring magnet 41 can be arranged on the side of the vibrating diaphragm, with
The corresponding opening position in the central area of the vibrating diaphragm 1, it is arranged on vibrating diaphragm with substantially parallel with the vibrating diaphragm 1 distribution mode
1 side.First yoke 43 is arranged on the side of the remote vibrating diaphragm 1 of first centring magnet 41, and described
One center magnetic conductive board 42 is then arranged on the side of the close vibrating diaphragm 1 of first centring magnet 41.Lead at first center
The yoke 43 of magnetic sheet 42 and first is used to correct magnetic field caused by first centring magnet 41.So, in first center magnetic
The outside of the side wall of iron 41 can form uniform magnetic field or more uniform magnetic field, and then form first magnetic gap 401.
Further, in the embodiment shown in Fig. 1, first yoke 43 has yoke side wall 431, such as Fig. 1,2
It is shown.The yoke side wall 431 is enclosed in the periphery of the side wall of first centring magnet 41, in yoke side wall 431 and first
Stayed between heart magnet 41 at regular intervals.The subregion forms first magnetic gap 401.As shown in Fig. 2 first sound
Circle 2 is extend into the magnetic gap between the side wall of the centring magnet 41 of yoke side wall 431 and first.The knot of this embodiment
Structure is relatively easy, and reliability is high.
It is of the present utility model one to cooperatively form first magnetic gap using the yoke side wall and the centring magnet
Kind preferred embodiment, still, the utility model, which is not intended to limit, can only use this structure.In other embodiments, example
First side magnet, side wall and the first centring magnet of the first side magnet can also be such as set around first centring magnet
First magnetic gap is formed between side wall.First when being also provided with first on magnet magnetic conductive board.This embodiment
The first magnetic gap in the magnetic field intensity that is formed it is stronger, can further improve the sensitivity of vibrating diaphragm.
Alternatively, for the second magnetic circuit system, the embodiment shown in reference picture 1, second magnetic circuit system can wrap
Include second in magnet 51, second yoke 53 of magnetic conductive board 52 and second.Second side magnet 51 is arranged on the one of the vibrating diaphragm
Side, can be the opposite sides different from the first centring magnet.Second side magnet 51 be arranged on the periphery of the vibrating diaphragm 1,
The corresponding opening position in edge, the bearing of trend of its own are basically parallel to the bearing of trend of the vibrating diaphragm 1.Second side magnetic
Iron can be several pieces of separation, be distributed in the edge of vibrating diaphragm one by one；Or or one piece of entirety cyclic structure, spill
The central area of the vibrating diaphragm.The utility model is limited not to this.
Described second when magnetic conductive board 52 is arranged on described second the close vibrating diaphragm 1 of magnet 51 side, described
Two yokes are then arranged on the side of the remote vibrating diaphragm 1 of second side magnet 51.So, in second side magnet 51
Can be formed with uniform magnetic field or more uniform magnetic field outside inside side walls, and then form the second magnetic gap 501.
For how to form second magnetic gap, the utility model and without concrete restriction.As shown in Figure 1, 2, exist
In a kind of embodiment, the intermediate region of second yoke 53 can have annular folded walls 531.The annular folded walls
531 bend extension to the direction of the side wall parallel to the second side magnet 51；Still optionally further, can also be to close to described second
The direction of the side wall of side magnet 51 extends one end distance.The side wall of magnet 51 and the annular folded walls 531 on second side
Between leave certain interval, the gap be used for form second magnetic gap 501.As shown in Fig. 2 second voice coil loudspeaker voice coil 3 stretches into
Into second magnetic gap 501.The annular folded walls 531 surround the outlet sound mouth of hollow out in the centre of second yoke 53
532, the outlet sound mouth 532 is configured for sound caused by diaphragm oscillations and spread out of.
It is further preferred that annular magnet, the annular magnet and institute are also provided with the annular folded walls
State the gap between the second side magnet and be formed in second magnetic gap.This preferred embodiment can strengthen the second magnetic gap
In magnetic field intensity, further enhance the sensitivity of vibrating diaphragm.
In other embodiments, the fixed form of other structures can also be used, in the center of the second magnetic circuit system
Domain sets magnet, so as to form magnetic gap.
Alternatively, as shown in Fig. 2 the vibrating diaphragm 1 can have central part 11, ring portion 12 and fixed part 13.The folding
Ring portion 12 is connected between the central part 11 and fixed part 13, and the ring portion 12 is mainly used in the vibration deformation of vibrating diaphragm.Institute
Stating fixed part 13 can be fixedly connected on the housing 6, and the central part 11 is then suspended from vibrating diaphragm 1 by the ring portion 12
Central area.The voice coil loudspeaker voice coil 3 of first voice coil loudspeaker voice coil 2 and second is connected in the both side surface of the central part 11, such as Fig. 2 institutes
Show.When being passed through voice signal in first, second voice coil loudspeaker voice coil, during so as to produce mobile, vibration, the ring portion 12 of the vibrating diaphragm can produce
Deformation, so that the central part 11 is together moved with voice coil loudspeaker voice coil, vibrated.
In the embodiment shown in Fig. 1,2, second side magnetic conductive board 52 is directly pressed on the fixed part 13, institute
The second side magnet 51 is stated to be arranged on the vibrating diaphragm 1.And the ring portion 12 is then to one away from second side magnetic conductive board 52
Lateral bending is rolled over, and avoids ring portion 12 from being contacted when deforming with the second side magnetic conductive board 52, the magnetic in magnetic conductive board 52, second of reduction second
The influence of the deformation of iron doubling ring portion 12.In other embodiments, if described second in magnetic conductive board, second, magnet will not
The deformation in ring portion is hampered, then the ring portion can also be folded upward at, and the utility model is limited not to this.
Area is accommodated as shown in figure 1, can have inside the housing 6, for accommodating each portion in miniature sound-producing device
Part.The vibrating diaphragm 1 is arranged in the receiving area, and the receiving differentiation is segmented into the rear operatic tunes and preceding sound area.Described first
Magnetic circuit system can be set in the operatic tunes in the rear, and correspondingly, the first voice coil loudspeaker voice coil 2 also is located in the rear operatic tunes.Second magnetic
Road system can be then arranged at the preceding sound area.This structure design takes full advantage of the preceding sound area of the miniature sound-producing device
Space, the sensitivity of miniature sound-producing device is greatly improved in limited space.Second yoke of second magnetic circuit system
53 itself can form the operatic tunes and outlet sound mouth 532 for speaking, and instead of the structures such as protecgulum in traditional sound-producing device.
Preferably, first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil can form circuit in parallel or series in miniature sound-producing device
Structure, so, the first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil can receive that uniformity is higher, identical sound letter in miniature sound-producing device
Number.This circuit configuration mode makes the first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil carry out the higher vibration action of identical, uniformity, further
Improve the sensitivity of miniature sound-producing device.
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)
- A kind of 1. miniature sound-producing device, it is characterised in that including：Vibrating diaphragm；First voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil, first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are connected to the both sides of the vibrating diaphragm；First magnetic circuit system and the second magnetic circuit system, formed with the first magnetic gap, first sound in first magnetic circuit system Circle is corresponding with the position of first magnetic gap, formed with the second magnetic gap, second sound in second magnetic circuit system Circle is corresponding with the position of second magnetic gap；Housing, the housing are configurable for carrying the vibrating diaphragm, the first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil and the first magnetic circuit system With the second magnetic circuit system.
- 2. miniature sound-producing device according to claim 1, it is characterised in that first magnetic circuit system includes the first center Magnet, the first center magnetic conductive board and the first yoke, first centring magnet are arranged on the side of the vibrating diaphragm, with the vibrating diaphragm Central area position correspondence, first yoke is arranged on the side of the remote vibrating diaphragm of first centring magnet, institute The side that the first center magnetic conductive board is arranged on the close vibrating diaphragm of first centring magnet is stated, first magnetic gap is located at The outside of the side wall of first centring magnet.
- 3. miniature sound-producing device according to claim 2, it is characterised in that first yoke has yoke side wall, institute The region stated between yoke side wall and the side wall of the first centring magnet forms first magnetic gap.
- 4. miniature sound-producing device according to claim 1, it is characterised in that second magnetic circuit system includes the second side magnetic Iron, the second side magnetic conductive board and the second yoke, second side magnet are arranged on the side of the vibrating diaphragm, the edge with the vibrating diaphragm Regional location is corresponding, and described second when magnetic conductive board is arranged on described second, magnet is close to the side of the vibrating diaphragm, and described second Yoke is arranged on side of second side magnet away from the vibrating diaphragm, and second magnetic gap is located at second side magnet The inner side of side wall.
- 5. miniature sound-producing device according to claim 4, it is characterised in that there is annular bending among second yoke Region between the side wall of wall, the annular folded walls and the second side magnet forms second magnetic gap, the annular bending Wall surrounds the outlet sound mouth of hollow out in the centre of second yoke.
- 6. miniature sound-producing device according to claim 5, it is characterised in that be provided with annular magnetic in the annular folded walls Iron.
- 7. miniature sound-producing device according to claim 1, it is characterised in that the vibrating diaphragm have central part, ring portion and Fixed part, the ring portion connect the central part with fixed part, and the fixed part connects on the housing, and described first Voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are connected in the both side surface of the central part.
- 8. miniature sound-producing device according to claim 7, it is characterised in that second magnetic circuit system includes the second side magnetic Iron and the second side magnetic conductive board, second side magnetic conductive board are arranged on the fixed part, and second side magnet is arranged on described On second side magnetic conductive board, the ring portion is bent to the side away from second side magnetic conductive board.
- 9. miniature sound-producing device according to claim 1, it is characterised in that have in the housing and accommodate area, it is described to shake Film is arranged in the receiving area, and the receiving differentiation is segmented into the rear operatic tunes and preceding sound area, the first magnetic circuit system by the vibrating diaphragm System is set in the operatic tunes in the rear, and second magnetic circuit system is arranged at the preceding sound area, is had on second magnetic circuit system There is outlet sound mouth, the outlet sound mouth is spread out of for sound caused by the diaphragm oscillations from the housing.
- 10. miniature sound-producing device according to claim 1, it is characterised in that first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are formed The circuit structure of serial or parallel connection, first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil are configured as receiving identical voice signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788439.4U CN207070337U (en) | 2017-06-30 | 2017-06-30 | Miniature sound-producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788439.4U CN207070337U (en) | 2017-06-30 | 2017-06-30 | Miniature sound-producing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207070337U true CN207070337U (en) | 2018-03-02 |
Family
ID=61506865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720788439.4U Expired - Fee Related CN207070337U (en) | 2017-06-30 | 2017-06-30 | Miniature sound-producing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207070337U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511061A (en) * | 2018-12-27 | 2019-03-22 | 歌尔股份有限公司 | Mini-sound device and electronic product |
| CN114979911A (en) * | 2022-07-29 | 2022-08-30 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN116709142A (en) * | 2023-07-31 | 2023-09-05 | 江苏裕成电子有限公司 | Multi-voice coil loudspeaker module |
-
2017
- 2017-06-30 CN CN201720788439.4U patent/CN207070337U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511061A (en) * | 2018-12-27 | 2019-03-22 | 歌尔股份有限公司 | Mini-sound device and electronic product |
| CN109511061B (en) * | 2018-12-27 | 2024-04-05 | 歌尔股份有限公司 | Miniature sound generating device and electronic product |
| CN114979911A (en) * | 2022-07-29 | 2022-08-30 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN116709142A (en) * | 2023-07-31 | 2023-09-05 | 江苏裕成电子有限公司 | Multi-voice coil loudspeaker module |
| CN116709142B (en) * | 2023-07-31 | 2023-10-27 | 江苏裕成电子有限公司 | Multi-voice coil loudspeaker module |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20200630 |