CN108668207A - A kind of sound-producing device - Google Patents
A kind of sound-producing device Download PDFInfo
- Publication number
- CN108668207A CN108668207A CN201810374578.1A CN201810374578A CN108668207A CN 108668207 A CN108668207 A CN 108668207A CN 201810374578 A CN201810374578 A CN 201810374578A CN 108668207 A CN108668207 A CN 108668207A
- Authority
- CN
- China
- Prior art keywords
- sound
- producing device
- hole
- cavity
- magnetic circuit
- 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.)
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Classifications
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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
-
- 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
Abstract
The invention discloses a kind of sound-producing devices, including magnetic circuit system and vibrational system, the magnetic circuit system includes the conductive magnetic yoke set gradually, magnet and washer, and magnet and washer form magnetic circuit part, the side wall in the direction opposite with magnetic circuit part in conductive magnetic yoke, sound-producing device encloses the first cavity；It is provided with multiple first through hole in the conductive magnetic yoke or/and the washer, sound-absorbing material is provided in first cavity, the aperture of the first through hole is less than the material diameter of the sound-absorbing material.According to one embodiment of the disclosure, when sound-absorbing material can be arranged in the present invention in back cavity, it is isolated without using the ventilative isolated material such as screen cloth.
Description
Technical field
The present invention relates to acoustic-electric energy-conversion technique fields, more particularly, to a kind of sound-producing device.
Background technology
Sound-producing device is component important in electronic product, for electric signal to be transformed into acoustical signal.Electronic product
Development trend is more and more thinner, and in order to realize more functions, the component in electronic product is more and more, certainly will be to sounding
The reserved space of device is smaller and smaller, and electronic product increasingly focuses on the music experience of user, therefore it is required that sound-producing device has
There is better sound quality.
For sound-producing device as a kind of electro-acoustic element that can be worked independently, its own has certain want in acoustical behavior
It asks, for example needs to have the magnetic circuit system of sufficient size, back cavity volume met the requirements etc..In end product space reduction
In the case of, it is limited to the space of product itself, the performance of the smaller speaker product of size inevitably has certain journey
The decaying of degree is unfavorable for promoting user experience.On the other hand, the structure member in sound-producing device is more, sound-producing device increasingly
While miniaturization, the assembly difficulty between each structure member is consequently increased.
Accordingly, it is desirable to provide a kind of new structural sound-producing device, it can also be with preferable property while with small size
Can, or the structure member in sound-producing device can be reduced, assembly difficulty is reduced, to meet the growth requirement of electronic product.
Invention content
It is an object of the present invention to provide a kind of new solutions of sound-producing device.
According to the first aspect of the invention, a kind of sound-producing device, including magnetic circuit system and vibrational system, the magnetic are provided
Road system includes the conductive magnetic yoke set gradually, magnet and washer, and magnet and washer form magnetic circuit part, in conductive magnetic yoke with magnetic circuit
The side wall in partly opposite direction, sound-producing device encloses the first cavity；
It is provided with multiple first through hole in the conductive magnetic yoke or/and the washer, sound-absorbing is provided in first cavity
Material, the aperture of the first through hole are less than the material diameter of the sound-absorbing material.
Optionally, the conductive magnetic yoke is provided with the second through-hole, and corresponding be provided with of the magnet connects with second through-hole
Logical third through-hole, second through-hole and the third through-hole form the second cavity being connected to the first cavity.
Optionally, the part corresponding with the third through-hole of the washer is provided with multiple first through hole.
Optionally, the edge of the conductive magnetic yoke is provided with retaining wall, and the side wall for enclosing first cavity includes the gear
Wall.
Optionally, the retaining wall is integrally formed with the conductive magnetic yoke.
Optionally, first cavity is enclosed by the retaining wall.
Optionally, the upright projection of the magnetic circuit part is equal to or less than the upright projection of the conductive magnetic yoke.
Optionally, the upright projection of the magnetic circuit part is less than the upright projection of the conductive magnetic yoke, big in the conductive magnetic yoke
In being provided with multiple first through hole on the region of the magnetic circuit part.
Optionally, the direction of first cavity far from the magnetic circuit part, which has, is open, sealed set in the opening
There is cover board.
Optionally, further include having shell, the vibrational system is arranged in the shell, the shell and the magnetic circuit system
System is tightly connected.
According to one embodiment of the disclosure, when sound-absorbing material can be arranged in the present invention in back cavity, without using screen cloth etc.
Ventilative isolated material is isolated.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of dimensional structure diagram of specific implementation mode of the present invention；
Fig. 2 is a kind of schematic cross-sectional view of specific implementation mode of the present invention；
Fig. 3 is the overlooking structure diagram of the first cavity in a kind of specific implementation mode of the present invention；
Fig. 4 is a kind of structural blast schematic diagram of specific implementation mode of the present invention；
In figure：1 magnetic circuit system, 11 conductive magnetic yokes, 12 retaining walls, 13 magnetic circuit parts, 14 magnet, 15 washers, 16 first through hole, 2
Vibrational system, 21 vibrating diaphragms, 3 first cavitys, 31 cover boards, 4 shells, 5 second cavitys, 51 second through-holes, 52 third through-holes.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
A kind of sound-producing device provided by the invention, as shown in Fig. 1-Fig. 4, including magnetic circuit system 1 and vibrational system 2.
The magnetic circuit system 1 includes conductive magnetic yoke 11, magnet 14 and the washer 15 set gradually.The magnet 14 and washer 15 form magnetic circuit
Part 13.
The side wall in the direction opposite with magnetic circuit part 13 in conductive magnetic yoke 11, sound-producing device encloses the first cavity 3, that is, exists
In conductive magnetic yoke 11 on the another side opposite with the setting one side of magnetic circuit part 13, side wall and the conductive magnetic yoke 11 of sound-producing device form
It is the bowl structure of bottom with conductive magnetic yoke 11, bowl-shape hollow region is first cavity 3.The side wall of the sound-producing device is
The structure for constituting sound-producing device surface may include sound-producing device for accommodating or the shell of fixing internal component, can also wrap
The component for exposing outside sound-producing device is included, the surface of sound-producing device can be formed.
It is provided with multiple first through hole 16 in the conductive magnetic yoke 11 or/and the washer 15, first cavity 3 and described
In vibrational system 2 back side of vibrating diaphragm 21 by the first through hole 16 be connected to, the first cavity 3 far from the conductive magnetic yoke 11 one
After end is sealed, the first cavity 3 can become the back cavity of the sound-producing device, for realizing the acoustical behavior of sound-producing device.
It is provided with sound-absorbing material in first cavity 3, equivalent dilatation can be carried out to the first cavity 3, be conducive to same
In the case of sample cavity size, better acoustical behavior is realized.The aperture of the first through hole 16 is less than the sound-absorbing material
Material diameter so that need not in partition members such as the other breathable barriers of setting, prevent the sound-absorbing material directly with vibrating diaphragm 21
Contact, influences the vibrating effect of vibrating diaphragm 21, influences the performance of sound-producing device；On the other hand, the inside zero of sound-producing device is simplified
Part and assembly difficulty improve the integration of sound-producing device.
Optionally, the sound-absorbing material is the micropores sound-absorbing materials such as zeolite granular.Further, the zeolite granular can be with
Including multiple zeolite particles, the silica alumina ratio of each zeolite particles is more than 200, alternatively, for without aluminium, preferably realizes
The effect of equivalent dilatation.
Optionally, as shown in Fig. 1-Fig. 4, the second through-hole 51 is provided in the conductive magnetic yoke 11, the magnet 14 is right
That answers is provided with the third through-hole 52 being connected to second through-hole 51, second through-hole 51 and the formation of the third through-hole 52
The second cavity 5 being connected to the first cavity 3, can increase the volume of sound-producing device back cavity, moreover it is possible to more sound-absorbing materials are set,
Be conducive to improve the acoustical behavior of sound-producing device.
Optionally, as shown in Fig. 1-Fig. 4, the part corresponding with third through-hole of washer 15 is provided with multiple described
First through hole 16 so that the first cavity 3 can be connected to by the second cavity 5 with the back side of vibrating diaphragm 21 in the vibrational system 2.
Optionally, second through-hole 51 is greater than or equal to the third through-hole 52.
Optionally, as shown in Fig. 1-Fig. 4, second through-hole 61 is arranged in the centre position of the conductive magnetic yoke 11,
The symmetry that magnetic circuit system can be improved ensures the performance of magnetic circuit system.
Optionally, the first through hole is by laser machining.In other specific implementation modes, can also be
It is integrally formed with the conductive magnetic yoke 11 or/and the washer 15 and is either processed by other processing methods, the application
This is not intended to limit.
Optionally, as shown in Fig. 1-Fig. 4, the edge of the conductive magnetic yoke 11 is provided with retaining wall 12, encloses described
The side wall of one cavity 3 includes the retaining wall 12, i.e., the retaining wall 12 can constitute the surface of the sound-producing device.The retaining wall 12
Permeability magnetic material identical with conductive magnetic yoke 11 may be used to be made, permeability magnetic material relative to common injected plastics material intensity higher,
Can accomplish under equality strength it is thinner, be conducive to improve the first cavity 3 internal volume.
Optionally, as shown in Fig. 1-Fig. 4, the retaining wall 12 is integrally formed with the conductive magnetic yoke 11, is conducive to improve
The integration of first cavity 3 and the integration of sound-producing device, reduce constitutional detail, can improve the first cavity 3 to greatest extent
Structural stability and leakproofness ensure its acoustical behavior；Alternatively, 12 sealing welding of the retaining wall is on the side of the conductive magnetic yoke 11
Edge, also possible, the application is not intended to limit this.
Optionally, first cavity 3 is enclosed by the retaining wall 12, and the retaining wall 12 can be the sounding dress
The side wall set so that conductive magnetic yoke can accomplish the maximization without departing from sound-producing device.In the conductive magnetic yoke 11 and the retaining wall 12
When integrated molding, first cavity 3 is also integrally formed, good seal performance, and the integrated degree of sound-producing device is high.At it
In his specific implementation mode, the retaining wall 12 can not also be the side wall of the sound-producing device, such as institute in Figs. 1-4
The edge for the conductive magnetic yoke 11 shown is respectively provided with retaining wall 12, but other structures can also be arranged in vacancy and be filled, because
This, whether retaining wall 12 is that the side wall of sound-producing device is not construed as limiting the invention.
Optionally, the upright projection of the conductive magnetic yoke 11 is equal to or less than the upright projection of sound-producing device entirety.
It will be understood by those skilled in the art that the magnitude relationship of the upright projection can refer to the correspondence of the outer edge of upright projection
Relationship.When the upright projection of the conductive magnetic yoke 11 is equal to the upright projection of the sound-producing device, conductive magnetic yoke 11 is without departing from hair
It can accomplish maximum in the case of acoustic device, the inner space of the first cavity 3 is enabled to accomplish to maximize.On the other hand, institute
The shape of the rule such as approximate cuboid can be made by stating sound-producing device, and various components carry out stacking setting, convenient for assembly and separation；
When the various components stacked use metal material, can be connected by laser welding, the assembly for improving sound-producing device is light
Degree, enhances the heat dissipation performance of sound-producing device.
Optionally, the upright projection of the magnetic circuit part 13 is equal to or less than the upright projection of the conductive magnetic yoke 11.From Fig. 2
Section on see, when the magnetic circuit part 13 and the conductive magnetic yoke 11 it is substantially wide when, conductive magnetic yoke 11 is received relative to traditional
Hold in the inside of sound-producing device, is wrapped up by the shell of sound-producing device, the present invention can be the case where not changing sound-producing device volume
Magnetic circuit system 1 in lower expansion sound-producing device, the thickness that can at least omit out above-mentioned side wall of outer shell are used for expanding magnetic circuit system
1, improve the performance of sound-producing device；In other words, sounding dress can be reduced in the case where not reducing the volume of former magnetic circuit system 1
The volume set realizes the miniaturization of sound-producing device.
Optionally, as shown in figures 3-4, the upright projection of the magnetic circuit part 13 is less than the vertical of the conductive magnetic yoke 11
It projects, is more than in the conductive magnetic yoke 11 on the region of the magnetic circuit part 13 and is provided with multiple first through hole 16 so that the
One cavity 3 can be connected to by first through hole 16 with the back side of vibrating diaphragm 21 in the vibrational system 2.
Optionally, as shown in Fig. 1-Fig. 4, first cavity, 3 direction far from the magnetic circuit part 13, which has, opens
Mouthful, sealed set has cover board 31 in the opening, for closing the first cavity 3, ensures the acoustic function of the first cavity 3.At it
In his specific implementation mode, the cover board 31 can not also be set, but used the first cavity on magnetic circuit system 13 is open
One side be directly enclosed on the shell of application apparatus, enable to the internal volume of the first cavity 3 to maximize in this way, the application
This is not intended to limit.
Optionally, the cover board 31 is metallic plate, advantageously reduces thickness, improves the internal capacity of the first cavity 3；Also
Help improve the heat dissipation performance of sound-producing device.
Optionally, further include having shell 4 as shown in Fig. 1-Fig. 4, the vibrational system 2 is arranged in the shell 4
Interior, the shell 4 is tightly connected with the magnetic circuit system 1, constitutes the agent structure of the sound-producing device.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of sound-producing device, which is characterized in that including magnetic circuit system and vibrational system, the magnetic circuit system includes setting gradually
Conductive magnetic yoke, magnet and washer, magnet and washer form magnetic circuit part, the direction opposite with magnetic circuit part in conductive magnetic yoke, hair
The side wall of acoustic device encloses the first cavity；
It is provided with multiple first through hole in the conductive magnetic yoke or/and the washer, sound-absorbing material is provided in first cavity,
The aperture of the first through hole is less than the material diameter of the sound-absorbing material.
2. sound-producing device according to claim 1, which is characterized in that the conductive magnetic yoke is provided with the second through-hole, the magnetic
Iron is corresponding to be provided with the third through-hole being connected to second through-hole, and second through-hole and the third through-hole are formed and the
Second cavity of one cavity connection.
3. sound-producing device according to claim 2, which is characterized in that the washer it is corresponding with the third through-hole
Part is provided with multiple first through hole.
4. sound-producing device according to claim 1, which is characterized in that the edge of the conductive magnetic yoke is provided with retaining wall, encloses
Side wall at first cavity includes the retaining wall.
5. sound-producing device according to claim 4, which is characterized in that the retaining wall is integrally formed with the conductive magnetic yoke.
6. sound-producing device according to claim 4, which is characterized in that first cavity is enclosed by the retaining wall.
7. sound-producing device according to claim 1, which is characterized in that the upright projection of the magnetic circuit part is equal to or less than
The upright projection of the conductive magnetic yoke.
8. sound-producing device according to claim 7, which is characterized in that the upright projection of the magnetic circuit part is less than described lead
The upright projection of yoke is more than in the conductive magnetic yoke on the region of the magnetic circuit part and is provided with multiple first through hole.
9. sound-producing device according to claim 1, which is characterized in that the side of first cavity far from the magnetic circuit part
To with opening, sealed set has cover board in the opening.
10. sound-producing device according to claim 1, which is characterized in that further include having shell, the vibrational system setting exists
In the shell, the shell is tightly connected with the magnetic circuit system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810374578.1A CN108668207B (en) | 2018-04-24 | 2018-04-24 | Sound production device |
| PCT/CN2018/125624 WO2019205719A1 (en) | 2018-04-24 | 2018-12-29 | Sound-producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810374578.1A CN108668207B (en) | 2018-04-24 | 2018-04-24 | Sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108668207A true CN108668207A (en) | 2018-10-16 |
| CN108668207B CN108668207B (en) | 2020-09-22 |
Family
ID=63781083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810374578.1A Active CN108668207B (en) | 2018-04-24 | 2018-04-24 | Sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108668207B (en) |
| WO (1) | WO2019205719A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205719A1 (en) * | 2018-04-24 | 2019-10-31 | 歌尔股份有限公司 | Sound-producing device |
| WO2019205720A1 (en) * | 2018-04-24 | 2019-10-31 | 歌尔股份有限公司 | Sound-emitting device |
| CN111083602A (en) * | 2019-12-19 | 2020-04-28 | 歌尔股份有限公司 | Sound absorbing material packaging structure for sound generating device and sound generating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202652506U (en) * | 2012-05-17 | 2013-01-02 | 瑞声光电科技(常州)有限公司 | Sounding device |
| CN202663529U (en) * | 2012-05-17 | 2013-01-09 | 瑞声光电科技(常州)有限公司 | Sounding device |
| CN207124755U (en) * | 2017-07-31 | 2018-03-20 | 歌尔科技有限公司 | A kind of sound-producing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120027240A1 (en) * | 2009-12-30 | 2012-02-02 | Foxconn Technology Co., Ltd. | Microphone module with helmholtz resonance chamber |
| CN108668207B (en) * | 2018-04-24 | 2020-09-22 | 歌尔股份有限公司 | Sound production device |
-
2018
- 2018-04-24 CN CN201810374578.1A patent/CN108668207B/en active Active
- 2018-12-29 WO PCT/CN2018/125624 patent/WO2019205719A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202652506U (en) * | 2012-05-17 | 2013-01-02 | 瑞声光电科技(常州)有限公司 | Sounding device |
| CN202663529U (en) * | 2012-05-17 | 2013-01-09 | 瑞声光电科技(常州)有限公司 | Sounding device |
| CN207124755U (en) * | 2017-07-31 | 2018-03-20 | 歌尔科技有限公司 | A kind of sound-producing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205719A1 (en) * | 2018-04-24 | 2019-10-31 | 歌尔股份有限公司 | Sound-producing device |
| WO2019205720A1 (en) * | 2018-04-24 | 2019-10-31 | 歌尔股份有限公司 | Sound-emitting device |
| CN111083602A (en) * | 2019-12-19 | 2020-04-28 | 歌尔股份有限公司 | Sound absorbing material packaging structure for sound generating device and sound generating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108668207B (en) | 2020-09-22 |
| WO2019205719A1 (en) | 2019-10-31 |
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