CN106231508A - A kind of vibrating diaphragm - Google Patents
A kind of vibrating diaphragm Download PDFInfo
- Publication number
- CN106231508A CN106231508A CN201610769102.9A CN201610769102A CN106231508A CN 106231508 A CN106231508 A CN 106231508A CN 201610769102 A CN201610769102 A CN 201610769102A CN 106231508 A CN106231508 A CN 106231508A
- Authority
- CN
- China
- Prior art keywords
- straight flange
- ring portion
- flange ring
- decorative pattern
- vibrating diaphragm
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses a kind of vibrating diaphragm.This vibrating diaphragm includes central part, around the ring portion of described central part and the fixed part that is wholely set with described ring portion, described ring portion includes the first straight flange ring portion, described first straight flange ring portion includes two straight flange rings extended in parallel, being respectively arranged with some arc decorative patterns on described two straight flange rings, described arc decorative pattern is sunk structure.The present invention can effectively suppress the polarization of vibrating diaphragm under the big displacement of low frequency, thus improves reliability and the acoustical behavior of speaker.
Description
Technical field
The present invention relates to electroacoustic field, more particularly, to a kind of vibrating diaphragm.
Background technology
In prior art, the miniaturization of the electronic terminal product such as mobile phone, panel computer, notebook becomes clear day by day, use
Accessory is miniaturized the most increasingly, flattening.Generally speaker includes shell, and the interior intracavity surrounded at shell has vibrational system and magnetic circuit
System, vibrational system includes vibrating diaphragm and the voice coil loudspeaker voice coil linked together.Wherein the design of vibrating diaphragm always determines Microspeaker system
The key factor of system performance, the problem along with Microspeaker is more and more higher for the characteristic requirements of low frequency, faced by vibrating diaphragm design
Severeer.
Preferably low frequency characteristic is so that Microspeaker acoustical behavior expands to low-end, but relatively low work
Frequency, can make vibrating diaphragm produce bigger vibration displacement, and now polarization problem and the sound caused by polarization easily occurs in vibrational system
Circle is wiped and is touched loose wire and the disconnection problem that magnetic circuit causes, thus can reduce the reliability of speaker, and it is miscellaneous that speaker is easily occurred
Sound；Meanwhile, there is buckling phenomena in the position that vibrating diaphragm is easily relatively concentrated at stress, in the case of long-time intensive work, there is vibrating diaphragm
Deformation and film split risk, threaten acoustical behavior and the reliability of speaker system.
Summary of the invention
It is an object of the present invention to provide the new solution of a kind of diaphragm of loudspeaker.
According to the first aspect of the invention, it is provided that a kind of vibrating diaphragm.This vibrating diaphragm includes central part, around described central part
Ring portion and the fixed part being wholely set with described ring portion, described ring portion includes the first straight flange ring portion, described first
Straight flange ring portion includes two straight flange rings extended in parallel, and is respectively arranged with some arcs flower on described two straight flange rings
Stricture of vagina, described arc decorative pattern is sunk structure.
Optionally, the arc decorative pattern in described first straight flange ring portion divides axisymmetricly along the center line of its place straight flange ring
Cloth.
Optionally, the centre position of the straight flange ring in described first straight flange ring portion is provided with described arc decorative pattern, described
Arc decorative pattern along its place straight flange ring center line axisymmetricly.
Optionally, described ring portion includes that the second straight flange ring portion, described second straight flange ring portion include that two parallel are prolonged
The straight flange ring stretched, the straight flange ring in described second straight flange ring portion and the straight flange ring interval head in described first straight flange ring portion
WEILIAN connects, and is respectively arranged with some arc decorative patterns on two straight flange rings in described second straight flange ring portion.
Optionally, the arc decorative pattern in described second straight flange ring portion is sunk structure, described second straight flange ring portion
On arc decorative pattern be distributed axisymmetricly along the center line of its place straight flange ring.
Optionally, the centre position of the straight flange ring in described second straight flange ring portion is provided with described arc decorative pattern, described
Arc decorative pattern along its place straight flange ring center line axisymmetricly.
Optionally, the decorative pattern in described straight flange ring centre position is semicircle decorative pattern.
Optionally, described ring portion also includes two sections of arc rings, two straight flange foldings in described first straight flange ring portion
Ring is connected by described two sections of arc rings head and the tail, and described ring portion is overall in track type.
Optionally, described ring portion also includes four corner rings, two straight flange rings in described second straight flange ring portion
Being connected with two straight flange ring head and the tail in described first straight flange ring portion by described four corner rings, described ring portion is overall
Rounded rectangle.
Optionally, described two sections of arc rings or four corner rings are provided with some straight line decorative patterns, described straight line
Decorative pattern is radiated to fixed part by the central part of described vibrating diaphragm, and described straight line decorative pattern is sunk structure.
It was found by the inventors of the present invention that in the prior art, particularly in the case of the big displacement of low frequency, vibrating diaphragm easily occurs
Polarization problem, polarization can cause voice coil loudspeaker voice coil wipe touch magnetic circuit system cause voice coil loudspeaker voice coil loose wire and broken string risk, reduce the reliable of speaker
Property and acoustical behavior.
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.
The vibrating diaphragm of the present invention is by arranging arc decorative pattern on straight flange ring, it is possible to effectively vibrating diaphragm under the suppression big displacement of low frequency
Polarization, thus improve reliability and the acoustical behavior of speaker.
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.
The top view of the vibrating diaphragm of Fig. 1: the embodiment of the present invention.
The top view of the another kind of vibrating diaphragm of Fig. 2: the embodiment of the present invention.
The top view of another vibrating diaphragm of Fig. 3: the embodiment of the present invention.
Fig. 4: the sectional view of line A-A along Fig. 1 vibrating diaphragm.
The effect analogy figure of the Fig. 5: the first centre position, straight flange ring portion arc decorative pattern.
The effect analogy figure of the Fig. 6: the second centre position, straight flange ring portion arc decorative pattern.
Wherein, 1: ring portion；2: fixed part；3: central part；10: the first straight flange ring portions；11: the second straight flange ring portions；
12: corner ring；13: arc ring；Arc decorative pattern in 100: the first straight flange ring portions；In 110: the second straight flange ring portions
Arc decorative pattern；120: the straight line decorative pattern on the ring of corner；130: the straight line decorative pattern on arc ring；1000: the first straight flange rings
The arc decorative pattern in centre position, portion；The arc decorative pattern in 1001: the first both sides, straight flange ring portions；In 1100: the second straight flange ring portions
Between the arc decorative pattern of position；The arc decorative pattern in 1101: the second both sides, straight flange ring portions；2000: flat with the first straight flange ring portion 10
The straight line decorative pattern of row；2001: the straight line decorative pattern vertical with the first straight flange ring portion 10；2100: flat with the second straight flange ring portion 11
The straight line decorative pattern of row；2101: the straight line decorative pattern vertical with the second straight flange ring portion 11.
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.
The invention provides a kind of vibrating diaphragm, as shown in Figures 1 to 4, this vibrating diaphragm includes that it is plane for being positioned at center
Central part 3 and be positioned at ring portion 1 and the fixed part 2 of marginal position, described ring portion 1 arrange around central part 3 and with institute
Stating the airtight combination of central part 3, described fixed part 2 is connected around ring portion 1 outward flange and being integrated with described ring portion 1 so that
Described vibrating diaphragm is fixed on loudspeaker housing, and after described vibrating diaphragm and described loudspeaker housing assemble and fix, ring portion 1 is the most permissible
It is illustrated in figure 4 the structure of epirelief, it is also possible to for recessed structure.Wherein, ring portion 1 includes the first straight flange ring portion 10, institute
The first straight flange ring portion 10 that states includes two straight flange rings extended in parallel, if being respectively arranged with on described two straight flange rings
Dry arc decorative pattern 100, described arc decorative pattern 100 is sunk structure, and described sunk structure is structure low between senior middle school around.This
The vibrating diaphragm of bright offer is by arranging arc decorative pattern on ring, it is possible to effectively suppression the first straight flange ring portion 10 horizontal direction is inclined
Shake, the pliable of the first straight flange ring portion 10 vertical direction can be improved simultaneously.Diaphragm materials is not defined by the present invention, shakes
Membrane material can be PEEK, TPU, PU, PEN, silica gel etc..
Preferably, it is contemplated that the symmetric shape in described ring portion 1 and stressing conditions, the arc in described first straight flange ring portion 10
Shape decorative pattern 100 is distributed axisymmetricly along the center line of its place straight flange ring, this distribution ensure that in ring portion 10 pliable,
Stress is distributed the most axisymmetricly along the center line of described straight flange ring, it is to avoid the pliable and stress in vibrating diaphragm ring portion 10 along described directly
The center line of edge break ring is mal-distribution and causes vibrating diaphragm to polarize.
Preferably, the centre position of the straight flange ring in described first straight flange ring portion 10 is provided with arc decorative pattern 1000,
Described arc decorative pattern 1000 along its place straight flange ring center line axisymmetricly.As it is shown in figure 5, can be by described arc decorative pattern
1000 analogize to two-part structure effect, and Part I structure is the straight line flower parallel with arc decorative pattern 1000 place straight flange ring
Stricture of vagina 2000, this part-structure can reduce the folded bent of decorative pattern place straight flange ring horizontal direction, thus reduce the inclined of vibrating diaphragm
Shake；Another part structure is two the straight line decorative patterns 2001 vertical with arc decorative pattern 1000 place straight flange ring, this part-structure
The pliable of decorative pattern place straight flange ring vertical direction can be improved.
It is further preferred that the decorative pattern 1000 in the straight flange ring centre position in described first straight flange ring portion 10 is semicircle
Decorative pattern.The semicircle decorative pattern in described straight flange ring centre position can reduce the polarization of described straight flange ring horizontal direction, simultaneously
Coordinate the arc decorative pattern being distributed in semicircle decorative pattern both sides, for reducing vibrating diaphragm polarization and improving described straight flange ring vertical direction
Pliable effect more notable.
Preferably, as it is shown in figure 1, described ring portion 1 also includes the second straight flange ring portion 11, described second straight flange ring portion
11 include two straight flange rings extended in parallel, the straight flange ring in described second straight flange ring portion 11 and described first straight flange ring
The straight flange ring interval head and the tail in portion 10 connect, and are respectively arranged with some on two straight flange rings in described second straight flange ring portion
Arc decorative pattern 110.
It is further preferred that as it is shown in figure 1, described arc decorative pattern 110 is sunk structure low between surrounding senior middle school, it is contemplated that
Described second straight flange ring portion 11 is symmetrical structure, in described second straight flange ring portion 11 arc decorative pattern 110 along its place
The center line of straight flange ring is distributed axisymmetricly, and this symmetrical pliable and stress that ensure that in ring portion 11 is all along described
The center line of straight flange ring is distributed the most axisymmetricly, it is to avoid the pliable and stress in vibrating diaphragm ring portion 11 is along described straight flange ring
Line is mal-distribution and causes vibrating diaphragm to polarize.
It is further preferred that as it is shown in figure 1, the centre position of the straight flange ring in described second straight flange ring portion 11 is provided with
Arc decorative pattern 1100, described arc decorative pattern 1100 is along the center line figure axisymmetricly of its place straight flange ring.As shown in Figure 6, may be used
So that described arc decorative pattern 1100 is analogized to two-part structure effect, Part I structure is and arc decorative pattern 1100 place straight flange
The straight line decorative pattern 2100 that ring is parallel, this part-structure can reduce its place straight flange ring folded bent in the horizontal direction,
Thus reduce the polarization of vibrating diaphragm；Another part is two the straight line decorative patterns vertical with arc decorative pattern 1100 place straight flange ring
2101, this part-structure can improve the pliable of its place straight flange ring vertical direction.
Especially, as it is shown in figure 1, in described first straight flange ring portion 10 and described second centre position, straight flange ring portion 11
Decorative pattern be semicircle decorative pattern, described semicircle decorative pattern coordinates the arc decorative pattern being distributed in described semicircle decorative pattern both sides, for
Reduce vibrating diaphragm polarization and the pliable effect improved in straight flange ring vertical direction is more notable.
Preferably, as it is shown on figure 3, described ring portion 1 also includes two sections of arc rings 13, described first straight flange ring portion 10
Two straight flange rings and described arc ring 13 head and the tail be connected, described ring portion generally track type, described track type is by two
Straight line and two semi arches that bar extends in parallel form, and the straight line that two are extended in parallel by described semi arch connects the structure that joins end to end
Become a closed figure.It is further preferred that as it is shown on figure 3, be respectively arranged with some straight line flowers on described arc ring 13
Stricture of vagina 130, described straight line decorative pattern 130 is sunk structure, described central part 3 radiate to described fixed part 2.Described first ring portion
Arc decorative pattern 1000, semicircle decorative pattern 1001 on 10 match with the straight line decorative pattern 130 on described arc ring, it is possible to increase
Whole ring portion 1 vertical direction pliable, can effectively suppress the skew of the first straight flange ring 10 horizontal direction simultaneously.
Another kind of optional embodiment is, as it is shown in figure 1, described ring portion 1 also includes four corner rings 12, described
Two straight flange rings in the second straight flange ring portion 11 are respectively by described four corner rings 12 and described first straight flange ring portion
Two straight flange ring head and the tail of 10 connect, and described ring portion 1 generally round rectangle, described round rectangle is by the four of rectangle
Right angle by four circularity substitutions thus the closed figure formed.It is further preferred that as it is shown in figure 1, described four corner rings
Being respectively arranged with some straight line decorative patterns 120 on 12, described straight line decorative pattern is sunk structure, by described central part 3 to described fixing
Portion 2 radiates.Arc decorative pattern and straight line decorative pattern in described ring portion 1 cooperate and jointly act on, it is possible to increase whole ring portion 1
Vertical direction pliable, can effectively suppress described first straight flange ring portion 10 and described second straight flange ring portion 11 level simultaneously
The skew in direction.
Alternatively, on described arc ring 13 and described corner ring, the straight line decorative pattern of 12 can be the word that width is equal
Shape decorative pattern, it is also possible to being Folium Bambusae shape decorative pattern wide in the middle of the point of two ends, the present invention does not carry out concrete restriction to it.For vibrating diaphragm
Obtaining the most pliable, described straight line decorative pattern width can be accomplished thin as far as possible on the basis of existing vibrating diaphragm moulding process, flower
Spacing between stricture of vagina and decorative pattern can be accomplished the least on the basis of not affecting pattern forming and existing vibrating diaphragm moulding process.
Alternatively, the arc decorative pattern 1001 and described of described first centre position decorative pattern 1000 both sides, straight flange ring portion 10
The arc decorative pattern 1101 of two decorative pattern both sides, centre position in straight flange ring portion 11 can be to be similar to the arc decorative pattern of straight line, radian
Relatively large arc decorative pattern, semicircle decorative pattern or a combination thereof decorative pattern etc., such as it can be situation as shown in Figure 2, this
Bright it is not carried out concrete restriction, those skilled in the art according to being embodied as situation, arc decorative pattern 1001, arc decorative pattern
1101 can use suitable radius, radian, quantity and position, to coordinate the decorative pattern of other positions jointly to reach to suppress vibrating diaphragm inclined
Shake and improve the optimum efficiency that ring vertical direction is pliable.When straight flange ring length is shorter, can be only at described straight flange ring
Centre position one arc decorative pattern is set, can play suppress described straight flange ring skew effect.
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 vibrating diaphragm, including central part, around the ring portion of described central part and with consolidating that described ring portion is wholely set
Determine portion, it is characterised in that: described ring portion includes that the first straight flange ring portion, described first straight flange ring portion include that two parallel are prolonged
The straight flange ring stretched, is respectively arranged with some arc decorative patterns on described two straight flange rings, and described arc decorative pattern is depression knot
Structure.
Vibrating diaphragm the most according to claim 1, it is characterised in that: the arc decorative pattern in described first straight flange ring portion is along its institute
Center line at straight flange ring is distributed axisymmetricly.
Vibrating diaphragm the most according to claim 1, it is characterised in that: the interposition of the straight flange ring in described first straight flange ring portion
Install and be equipped with described arc decorative pattern, described arc decorative pattern along its place straight flange ring center line axisymmetricly.
Vibrating diaphragm the most according to claim 1, it is characterised in that: described ring portion includes the second straight flange ring portion, described
Two straight flange ring portions include two straight flange rings extended in parallel, the straight flange ring and described first in described second straight flange ring portion
The straight flange ring interval head and the tail in straight flange ring portion connect, and are respectively provided with on two straight flange rings in described second straight flange ring portion
There are some arc decorative patterns.
Vibrating diaphragm the most according to claim 4, it is characterised in that: the arc decorative pattern in described second straight flange ring portion is recessed
Falling into structure, the arc decorative pattern in described second straight flange ring portion is distributed axisymmetricly along the center line of its place straight flange ring.
Vibrating diaphragm the most according to claim 4, it is characterised in that: the interposition of the straight flange ring in described second straight flange ring portion
Install and be equipped with described arc decorative pattern, described arc decorative pattern along its place straight flange ring center line axisymmetricly.
7. according to the vibrating diaphragm described in claim 3 or 6, it is characterised in that: the decorative pattern in described straight flange ring centre position is semicircle
Shape decorative pattern.
Vibrating diaphragm the most according to claim 1, it is characterised in that: described ring portion also includes two sections of arc rings, described
Two straight flange rings in edge break ring portion are connected by described two sections of arc rings head and the tail always, and described ring portion is overall in runway
Shape.
Vibrating diaphragm the most according to claim 4, it is characterised in that: described ring portion also includes four corner rings, described
Two straight flange rings in two straight flange ring portions are by two straight flanges of described four corner rings with described first straight flange ring portion
Ring head and the tail connect, the overall rounded rectangle in described ring portion.
Vibrating diaphragm the most according to claim 8 or claim 9, it is characterised in that: described two sections of arc rings or four corner rings
On be provided with some straight line decorative patterns, described straight line decorative pattern by the central part of described vibrating diaphragm to fixed part radiate, described straight line decorative pattern
For sunk structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769102.9A CN106231508B (en) | 2016-08-30 | 2016-08-30 | Vibrating diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769102.9A CN106231508B (en) | 2016-08-30 | 2016-08-30 | Vibrating diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106231508A true CN106231508A (en) | 2016-12-14 |
| CN106231508B CN106231508B (en) | 2019-12-13 |
Family
ID=58072418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610769102.9A Active CN106231508B (en) | 2016-08-30 | 2016-08-30 | Vibrating diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106231508B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107948894A (en) * | 2018-01-03 | 2018-04-20 | 奥音科技（北京）有限公司 | Silica gel vibrating diaphragm and loudspeaker |
| CN108012224A (en) * | 2017-12-29 | 2018-05-08 | 歌尔股份有限公司 | A kind of vibrating diaphragm and electroacoustic transducer |
| CN108513228A (en) * | 2018-06-25 | 2018-09-07 | 歌尔股份有限公司 | Loud speaker and portable terminal |
| CN108696806A (en) * | 2018-06-25 | 2018-10-23 | 歌尔股份有限公司 | Loud speaker and portable terminal |
| CN108810761A (en) * | 2018-06-25 | 2018-11-13 | 歌尔股份有限公司 | Loud speaker and portable terminal |
| CN108882123A (en) * | 2018-06-25 | 2018-11-23 | 歌尔股份有限公司 | Microphone device and portable terminal |
| CN109391886A (en) * | 2018-11-02 | 2019-02-26 | 深圳市三诺数字科技有限公司 | A kind of passive radiator |
| WO2021134189A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Diaphragm and sound generation device |
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| CN105872912A (en) * | 2016-04-22 | 2016-08-17 | 歌尔声学股份有限公司 | Vibrating diaphragm and minitype acoustic generator with same |
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| EP2725820A1 (en) * | 2012-10-29 | 2014-04-30 | Em-tech. Co., Ltd. | Vibration module for sound transducer |
| CN203225873U (en) * | 2013-05-03 | 2013-10-02 | 歌尔声学股份有限公司 | Loudspeaker diaphragm |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012224A (en) * | 2017-12-29 | 2018-05-08 | 歌尔股份有限公司 | A kind of vibrating diaphragm and electroacoustic transducer |
| CN108012224B (en) * | 2017-12-29 | 2023-11-21 | 歌尔股份有限公司 | Vibrating diaphragm and electroacoustic transducer |
| CN107948894A (en) * | 2018-01-03 | 2018-04-20 | 奥音科技（北京）有限公司 | Silica gel vibrating diaphragm and loudspeaker |
| CN107948894B (en) * | 2018-01-03 | 2021-07-30 | 镇江贝斯特新材料有限公司 | Silica gel vibrating diaphragm and loudspeaker |
| CN108513228A (en) * | 2018-06-25 | 2018-09-07 | 歌尔股份有限公司 | Loud speaker and portable terminal |
| CN108696806A (en) * | 2018-06-25 | 2018-10-23 | 歌尔股份有限公司 | Loud speaker and portable terminal |
| CN108810761A (en) * | 2018-06-25 | 2018-11-13 | 歌尔股份有限公司 | Loud speaker and portable terminal |
| CN108882123A (en) * | 2018-06-25 | 2018-11-23 | 歌尔股份有限公司 | Microphone device and portable terminal |
| CN108696806B (en) * | 2018-06-25 | 2023-11-21 | 歌尔股份有限公司 | Speaker and portable terminal |
| CN109391886A (en) * | 2018-11-02 | 2019-02-26 | 深圳市三诺数字科技有限公司 | A kind of passive radiator |
| CN109391886B (en) * | 2018-11-02 | 2024-04-02 | 深圳市三诺数字科技有限公司 | Passive radiator |
| WO2021134189A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Diaphragm and sound generation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106231508B (en) | 2019-12-13 |
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