CN111698621B - Sound production device and electronic product - Google Patents
Sound production device and electronic product Download PDFInfo
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- CN111698621B CN111698621B CN201910195398.1A CN201910195398A CN111698621B CN 111698621 B CN111698621 B CN 111698621B CN 201910195398 A CN201910195398 A CN 201910195398A CN 111698621 B CN111698621 B CN 111698621B
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- sound
- washer
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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
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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
- H04R9/06—Loudspeakers
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention discloses a sound production device and an electronic product. The sound generating device includes: the casing with set up on the casing: the first vibration system comprises a first diaphragm and at least two first voice coils which are arranged on the first diaphragm at intervals; the second vibration system comprises a second diaphragm and at least one second voice coil arranged on the second diaphragm, and the second diaphragm is arranged opposite to the first diaphragm; a magnetic circuit system including a central magnet and a support member, the support member being located between the first and second vibration systems. The technical effect of the invention is that the sound generating device has larger loudness and better acoustic performance.
Description
Technical Field
The invention relates to the technical field of electroacoustic, in particular to a sound production device and an electronic product.
Background
The sound generating device is an important acoustic component in portable electronic equipment, is a device for realizing conversion of electric signals and acoustic signals, and is commonly used in electronic equipment such as mobile phones and computers. With the rapid development of the related technologies of electronic products, in order to achieve better performance, those skilled in the art have improved the structure of the sound generating device.
In the interior of an electronic product, because the space for installing the sound generating device is limited, the existing sound generating device installed on the electronic product usually adopts a structure that a single vibrating diaphragm generates sound on the front side. In order to further improve the acoustic performance of the sound generating device, the performance needs to be improved by increasing the vibration area and the working amplitude of the sound generating device, but the increase of the vibration area can lead to the increase of the size of the sound generating device, and the sound generating device is difficult to be assembled into an electronic product with limited space. Meanwhile, the increase of the vibration area can lead to the increase of the working amplitude of the sound generating device, which is easy to generate adverse effect on the acoustic performance of the sound generating device.
Therefore, there is a need for a new sound generating device to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a double-sided sounding device.
According to a first aspect of the present invention, there is provided a sound generating device comprising: the casing with set up on the casing:
the first vibration system comprises a first diaphragm and at least two first voice coils which are arranged on the first diaphragm at intervals;
the second vibration system comprises a second diaphragm and at least one second voice coil arranged on the second diaphragm, and the second diaphragm is arranged opposite to the first diaphragm;
a magnetic circuit system including a central magnet and a support member, the support member being located between the first vibration system and the second vibration system.
Optionally, the magnetic circuit system further comprises: and the first voice coil and the second voice coil are suspended in a magnetic gap formed by the edge magnetic part and the central magnet.
Optionally, the central magnet comprises: two first magnets;
the two first voice coils are same in size and are arranged in a magnetic gap formed by the first magnet and the side magnetic part side by side.
Optionally, the support member includes a frame portion adjacent to the first diaphragm and having a hollow, and a central portion adjacent to the second diaphragm; the central part is relatively positioned in the central area of the frame body part and is supported on the frame body part through the connecting part, and a gap is formed between the central part and the frame body part;
the surface of the central part facing the first diaphragm is sequentially provided with the central magnet and the first washer.
Optionally, the rim magnet part comprises a rim magnet and a rim washer which are sequentially arranged on the surface of the frame part facing the second diaphragm; the first voice coil is suspended in a magnetic gap formed by the central magnet, the first washer, the edge magnet and the frame body part; the second voice coil is suspended in a magnetic gap surrounded by the center magnet, the center part, the edge magnet and the edge washer.
Optionally, the edge magnet part comprises an edge magnet and an edge washer; the casing includes first casing and second casing, support piece moulds plastics on the first casing, the side washer is moulded plastics on the second casing.
Optionally, the magnetic circuit system further comprises: a second magnet suspended in a magnetic gap formed by the second magnet and the side magnetic portion.
Optionally, the number and arrangement of the second voice coils are the same as those of the first voice coils.
Optionally, the support is of a flat plate structure, and the second magnet and the second washer are sequentially arranged on the surface of the support.
Optionally, the method further comprises: the two sets of centering support pieces are respectively arranged between the first vibration system and the second vibration system, bonding pads are arranged on the centering support pieces, and the two sets of centering support pieces are conducted through metal inserts to be connected with external electric signals.
According to a second aspect of the present invention, there is provided an electronic product, comprising:
the sound producing device described above;
the electronic product main body is provided with a sound outlet, and the sound outlet is used for transmitting sound generated by the sound generating device.
According to the sound generating device provided by the invention, the two sets of vibration systems are arranged in the shell, the plurality of voice coils are arranged in at least one vibration system, and the two sets of vibration systems share the magnetic circuit system positioned between the two vibration diaphragms, so that the height space of the sound generating device is greatly saved, the size of the shell of the sound generating device is reduced, and the sound generating device can be lighter and thinner; simultaneously, mutual noninterference between two vibration systems, this amplitude that makes two vibration systems can promote effectively, and sound generating mechanism's loudness is bigger, and acoustic performance is better.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A schematic cross-sectional view taken along section A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along section B-B of FIG. 1;
FIG. 4 is a schematic structural diagram of a support member of a sound generating device according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of another sound generator provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of another sound generator according to an embodiment of the present invention
Fig. 7 is an exploded view of a sound generating device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A sound generating device according to an embodiment of the present invention, fig. 2 isbase:Sub>A schematic sectional diagram of fig. 1 taken alongbase:Sub>A-base:Sub>A section, fig. 3 isbase:Sub>A schematic sectional diagram of fig. 1 taken alongbase:Sub>A-B section, fig. 4 isbase:Sub>A schematic structural diagram ofbase:Sub>A support member in the sound generating device according to the embodiment of the present invention, fig. 5 isbase:Sub>A schematic sectional diagram of another sound generating device according to the embodiment of the present invention, fig. 6 isbase:Sub>A schematic sectional diagram of another sound generating device according to the embodiment of the present invention, and fig. 7 is an exploded view of the sound generating device according to the embodiment of the present invention. The structure, principle, etc. of the sound generating device of the present invention will now be described in detail by taking fig. 1 to 7 as an example.
The invention provides a sound generating device which comprises a shell, a first vibration system, a second vibration system and a magnetic circuit system. The first vibration system and the second vibration system are respectively positioned above and below the magnetic circuit system. The two vibration systems share one magnetic circuit system to produce sound. The sound generating device may have, but is not limited to, a rectangular structure, a racetrack structure, or a circular structure, and the rectangular structure will be described as an example.
As shown in fig. 1 and 2, a cavity is formed inside the housing. The first vibration system and the second vibration system are respectively suspended at the upper end and the lower end of the magnetic circuit system.
The first vibration system comprises a first diaphragm 11 and at least two first voice coils 12 arranged on the first diaphragm 11 at intervals, and the first voice coils 12 are arranged in the shell and are positioned on one side of the magnetic circuit system along the vibration direction. The vibration direction in this embodiment refers to the vibration direction of the first vibration system and the second vibration system. For example, when the number of the first voice coils is two, two first voice coils may be disposed side by side on the first diaphragm; or the two first voice coils are a large voice coil and a small voice coil, and the small voice coil and the large voice coil are sleeved on the first vibrating diaphragm together. Or, three same first voice coils are arranged side by side on the first diaphragm, and the number and the arrangement position of the first voice coils are not specifically limited in this embodiment.
Similarly, the second vibration system includes a second diaphragm 21 and at least one second voice coil 22 disposed on the second diaphragm, and the second diaphragm 21 is disposed opposite to the first diaphragm 11 and located on the other side of the magnetic circuit system along the vibration direction. The number of the second voice coil 22 may be one, two or more, and one skilled in the art may set at least one second voice coil 22 on the second diaphragm 21 according to the requirement, so that the first vibration system and the second vibration system vibrate and generate sound in the same or opposite directions at the same time.
In particular, the magnetic circuit comprises a central magnet and a support 32, the support 32 being located between the first and second vibrating systems. The support 32 may be provided in different shapes as required so that the magnetic circuit system is shared by the first vibration system and the second vibration system. As will be understood by those skilled in the art, the first voice coil 12 and the second voice coil 22 are suspended in the magnetic gap of the magnetic circuit system, respectively, to drive the first diaphragm 11 and the second diaphragm 21 to vibrate and generate sound. The magnetic circuit system may be a single magnetic circuit system, a three magnetic circuit system, a five magnetic circuit system, or an annular magnetic circuit system, which is not limited in this embodiment.
According to the sound generating device provided by the invention, the two sets of vibration systems are arranged in the shell, the plurality of voice coils are arranged in at least one vibration system, and the two sets of vibration systems share the magnetic circuit system positioned between the two vibration membranes, so that the height space of the sound generating device is greatly saved, the size of the shell of the sound generating device is reduced, and the sound generating device can be lighter and thinner; simultaneously, mutual noninterference between two vibration systems, this amplitude that makes two vibration systems can promote effectively, and sound generating mechanism's loudness is bigger.
Optionally, the magnetic circuit system further comprises: the number and the form of the edge magnetic parts are not limited by the shape of the shell of the sound production device. For example, the edge magnet part may be composed of a ring-shaped magnet and a ring-shaped washer, or may be composed of a bar-shaped magnet and a washer. The first voice coil 12 and the second voice coil 22 are suspended in the magnetic gap formed by the side magnetic part and the center magnet. In the embodiment shown in fig. 3, the first voice coil 12 and the second voice coil 22 are inserted into the magnetic gap formed by the center magnet and the side magnet portion from the upper side and the lower side of the magnetic circuit system, respectively.
Specifically, the center magnet includes: two first magnets 311. When the number of the first voice coils 12 is two, the two first voice coils 12 have the same size and are arranged side by side in the magnetic gap formed by the first magnet 311 and the side magnetic part. Thus, the two first voice coils 12 which are powered on vibrate in the magnetic field, and the two vibrating first voice coils 12 drive the first vibrating diaphragm 11 to produce sound together, so that the mechanical energy is converted into sound energy. Because two first voice coil loudspeaker voice coil 12 sizes are the same, set up side by side, and the structure is compacter like this, and two first voice coil loudspeaker voice coil 12's magnetic gap is littleer, can obtain higher magnetic property, helps promoting sound generating mechanism's acoustic performance.
In a possible implementation manner, the supporting member 32 includes a frame portion 321 adjacent to the first diaphragm 11 and having a hollow, and a central portion 322 adjacent to the second diaphragm 21. As shown in fig. 4, the hollow area is located in the central area of the frame portion 321, the shape and size of the frame portion 321 can be adapted according to the size of the sound generating device, and the shape and size of the hollow area and the central portion 322 can be selected according to the magnetic circuit system. In this embodiment, the frame portion 321, the hollow area and the central portion 322 are all rectangular. The center portion 322 is provided in a central region of the frame portion 321, for example, the center portion 322 is located above or below the frame portion 321, the center portion 322 is supported by the frame portion 321 through a connection portion 323, the connection portion 323 may have a sheet or strip structure, and the connection portion 323 is connected to the frame portion 321 so that a gap is formed between the center portion 322 and the frame portion 321.
As shown in fig. 2 and 3, the support member 32 is located in the magnetic circuit system, and the surface of the central portion 322 facing the first diaphragm 11 is provided with the first magnet 311 and the first washer 34 in this order. The height difference between the central portion 322 and the frame portion 321 is just capable of receiving the first magnet 311 and the first washer 34. Meanwhile, the second voice coil 22 is inserted into the gap between the center portion 322 and the frame portion 321, and shares a magnetic circuit system with the first voice coil 12. Thus, the first voice coil and the second voice coil which are positioned in the magnetic gap obtain higher magnetic performance, and the acoustic performance of the sound generating device is better.
Specifically, the rim magnet portion includes a rim magnet 331 and a rim washer 332 which are sequentially disposed on a surface of the frame portion facing the second diaphragm 21. As shown in fig. 3, the first voice coil 12 is suspended in the magnetic gap formed by the first magnet 311, the first washer 34, the edge magnet 331 and the frame portion 321, the frame portion 321 of the support 32 in the long axis direction and the first washer 34 located in the middle of the magnetic circuit system are located at the same height, the first magnet 311 is located on one side of the first washer 34 far away from the first diaphragm 11, and the first magnet 311 and the edge magnet 331 are oppositely disposed on two sides of the first voice coil 12. It can be understood that, since the gap reserved for the first voice coil 12 between the frame portion 321 of the support member 32 and the first washer 34 is small, the magnetic force lines are further corrected, and the magnetic efficiency is enhanced. The second voice coil 22 is suspended in the magnetic gap enclosed by the first magnet 311, the center portion 322, the rim magnet 331 and the rim washer 332. The frame part and the central part of the supporting piece are respectively matched with the first washer and the edge washer in the first vibration system and the second vibration system to jointly correct magnetic lines of force.
As shown in fig. 3, the central portion 322 of the support 32 stably arranges the first magnet 311 and the first washer 34 in the magnetic circuit system to be shared by the upper and lower first vibration systems and the second vibration system. In the first vibration system, the aspect ratio size of side magnet, center magnet etc. among the magnetic circuit system is helped reducing to the mode of a plurality of voice coil loudspeaker voice coil drives, is when material saving, reduce cost, still helps reducing the technology degree of difficulty, improves the yield.
In another possible embodiment, the side magnet portion includes a side magnet 331 and a side washer 332. The casing includes a first casing 41 and a second casing 42, and the first casing 41 and the second casing 42 are used for supporting and fixing components in the sound generating device. As shown in fig. 3, the supporting member 32 is injection-molded on the first housing 41, and the frame portion 321 of the supporting member 32 can be used as a curb washer, so that material is saved. In the second vibration system, the edge washer 332 is injection-molded in the second housing 42, compared with the conventional bonding process, the support piece and the edge washer which are fixed by the injection molding process are adopted, and the structural strength and the stability of the sound generating device are improved.
In this embodiment, the magnetic circuit system further includes: a second magnet 35, wherein the second voice coil 22 is suspended in a magnetic gap formed by the second magnet 35 and the side magnetic part. In this embodiment, the second magnet 35 and the two first magnets 311 are arranged opposite to each other, and when the two vibration systems work simultaneously, the vibration system has better effects of resisting swinging and polarization. Simultaneously, two first voice coils 12 in the first vibration system and first vibrating diaphragm 11 cooperation can reduce the amplitude of vibration, improve sound generating mechanism's loudness.
In the embodiment shown in fig. 5, the edge magnets 331 located in the first vibration system and the second vibration system are arranged on two sides of the support member 32 in the vibration direction, and the edge magnets 331 in the two vibration systems have the same size, so that the scale production is facilitated, and the difficulty in assembly is reduced.
Further, the number and arrangement of the second voice coils 22 are the same as those of the first voice coils 12. Namely, the setting quantity and the setting direction of the first voice coil, the second voice coil, the first vibrating diaphragm and the second vibrating diaphragm in the first vibrating system and the second vibrating system are the same.
For example, as shown in fig. 6, in this embodiment, two first voice coils 12 and two second voice coils 22 are provided in the first vibration system and the second vibration system, respectively, and a plurality of magnets, washers, and the like are provided to be vibrationally engaged with the voice coils. In this sound generating mechanism, two vibration system's mode of setting is the same, and vibration balance nature of vibration system is better, when the vibration system who is located support piece both sides is reverse vibration, can show the holistic vibration problem of offsetting sound generating mechanism.
On the one hand, the sound production device produces sound on two sides, and the first voice coil and the second voice coil can be connected in parallel or in series to drive the vibration system to work together. On the other hand, the first voice coil and the second voice coil in the two vibration systems can be independently connected with the electric signal and independently controlled. The purpose of restraining the polarization of the sound production device and improving the vibration is achieved by adjusting the electric signals.
In this embodiment, the support plate is a flat plate structure. As shown in fig. 5 and 6, the support separates the first vibration system from the second vibration system, and the second magnet and the second washer are sequentially disposed on the surface of the support.
Optionally, the sound generating device further comprises: two sets of centering buttresses. As shown in fig. 7, two sets of the spider 50 are respectively disposed between the first vibration system and the second vibration system, the spider 50 is further provided with a pad, the first voice coil 12 and the second voice coil 22 are respectively conducted with the pad on the spider 50, and the two sets of the spider are conducted through a metal insert to access an external electrical signal. Therefore, the first vibration system and the second vibration system can be connected with external signals respectively and work independently. For example, only one of the vibration systems can be selected to work, so that the single-sided sound production of the sound production device can be realized; alternatively, the vibration system on one side is selected to vibrate in the opposite direction, to compensate for the acoustic performance of the vibration system on the other side, and so on.
In another aspect of the invention, an electronic product is also provided. The electronic product comprises the sound generating device and an electronic product main body, wherein the sound generating device is arranged in the electronic product main body, the electronic product main body is provided with a sound outlet, and the sound outlet supplies sound generated by the sound generating device to be transmitted out.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (11)
1. A sound generating device, comprising: the casing with set up on the casing:
the first vibration system comprises a first diaphragm and at least two first voice coils which are arranged on the first diaphragm at intervals;
the second vibration system comprises a second diaphragm and at least one second voice coil arranged on the second diaphragm, and the second diaphragm is arranged opposite to the first diaphragm;
the magnetic circuit system comprises a central magnet, a side magnetic part and a support piece, and the support piece is positioned between the first vibration system and the second vibration system;
the support part comprises a frame part which is adjacent to the first vibrating diaphragm and is provided with a hollow part, and a central part which is adjacent to the second vibrating diaphragm; the central part is relatively positioned in the central area of the frame body part and is supported on the frame body part through the connecting part, and a gap is formed between the central part and the frame body part;
the side magnet portion is disposed on a surface of the frame portion facing the second diaphragm, and the center magnet is disposed on a surface of the center portion facing the first diaphragm.
2. The apparatus according to claim 1, wherein said first and second voice coils are suspended in a magnetic gap formed by said side magnetic portion and said center magnet.
3. The sound generating apparatus of claim 2, wherein the central magnet comprises: two first magnets;
the two first voice coils are same in size and are arranged in a magnetic gap formed by the first magnet and the side magnetic part side by side.
4. The apparatus according to claim 2,
the surface of the central part facing the first diaphragm is sequentially provided with the central magnet and the first washer.
5. The sound production device according to claim 4, wherein the rim magnet portion comprises a rim magnet and a rim washer which are sequentially arranged on the surface of the frame portion facing the second diaphragm; the first voice coil is suspended in a magnetic gap formed by the central magnet, the first washer, the edge magnet and the frame body part; the second voice coil is suspended in a magnetic gap surrounded by the center magnet, the center part, the edge magnet and the edge washer.
6. The sound generating device according to claim 2, wherein the rim magnet portion comprises a rim magnet and a rim washer; the casing includes first casing and second casing, support piece moulds plastics on the first casing, the side washer is moulded plastics on the second casing.
7. The sound generating apparatus as claimed in claim 6, wherein said magnetic circuit system further comprises: a second magnet suspended in a magnetic gap formed by the second magnet and the side magnetic portion.
8. The apparatus according to claim 7, wherein said second voice coils are identical in number and arrangement to said first voice coils.
9. The sound-generating apparatus as claimed in any one of claims 7 or 8, wherein the supporting member is a flat plate structure, and the second magnet and the second washer are sequentially disposed on a surface of the supporting member.
10. The apparatus according to claim 1, further comprising: the two sets of centering support pieces are respectively arranged between the first vibration system and the second vibration system, bonding pads are arranged on the centering support pieces, and the two sets of centering support pieces are conducted through metal inserts to be connected with external electric signals.
11. An electronic product, comprising:
the sound generating device of any one of claims 1-10;
the electronic product main body is provided with a sound outlet, and the sound outlet is used for transmitting sound generated by the sound generating device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195398.1A CN111698621B (en) | 2019-03-14 | 2019-03-14 | Sound production device and electronic product |
| PCT/CN2019/129737 WO2020181893A1 (en) | 2019-03-14 | 2019-12-30 | Sound generation device and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195398.1A CN111698621B (en) | 2019-03-14 | 2019-03-14 | Sound production device and electronic product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111698621A CN111698621A (en) | 2020-09-22 |
| CN111698621B true CN111698621B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910195398.1A Active CN111698621B (en) | 2019-03-14 | 2019-03-14 | Sound production device and electronic product |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111698621B (en) |
| WO (1) | WO2020181893A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099365A (en) * | 2021-04-01 | 2021-07-09 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN113068105B (en) * | 2021-05-07 | 2023-03-24 | 台湾立讯精密有限公司 | Double-sided loudspeaker device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333270A (en) * | 2011-07-15 | 2012-01-25 | 瑞声声学科技(深圳)有限公司 | Sounder |
| CN203912186U (en) * | 2014-06-16 | 2014-10-29 | 苏州东立电子有限公司 | Single-diaphragm double-magnetic-circuit loudspeaker |
| CN105992110A (en) * | 2016-05-05 | 2016-10-05 | 歌尔股份有限公司 | Sound generating device and sound generating device module group |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002335597A (en) * | 2001-05-09 | 2002-11-22 | Citizen Electronics Co Ltd | Combination speaker |
| JP2008099106A (en) * | 2006-10-13 | 2008-04-24 | Matsushita Electric Ind Co Ltd | Speaker |
| CN102711011B (en) * | 2012-01-04 | 2014-11-26 | 瑞声声学科技(深圳)有限公司 | Two-circuit electroacoustic conversion device |
| CN103209377B (en) * | 2013-03-19 | 2016-02-17 | 歌尔声学股份有限公司 | Multifunction speaker |
| CN103297904B (en) * | 2013-05-18 | 2015-09-02 | 歌尔声学股份有限公司 | A kind of Double-vibrating-diaspeaker speaker module |
| RU2754074C2 (en) * | 2015-09-14 | 2021-08-25 | Уинг Акустикс Лимитэд | Improvement of audio converters or improvements related to them |
| CN106303857A (en) * | 2016-09-07 | 2017-01-04 | 深圳天珑无线科技有限公司 | Double diaphragm loudspeaking component and loudspeaker arrangement |
| CN207869379U (en) * | 2018-01-27 | 2018-09-14 | 瑞声科技(新加坡)有限公司 | Loud speaker |
| CN208402084U (en) * | 2018-06-29 | 2019-01-18 | 深圳市蓝禾技术有限公司 | loudspeaker and earphone |
| CN208572332U (en) * | 2018-07-24 | 2019-03-01 | 深圳瑞利声学技术股份有限公司 | Loudspeaker and electronic product |
-
2019
- 2019-03-14 CN CN201910195398.1A patent/CN111698621B/en active Active
- 2019-12-30 WO PCT/CN2019/129737 patent/WO2020181893A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333270A (en) * | 2011-07-15 | 2012-01-25 | 瑞声声学科技(深圳)有限公司 | Sounder |
| CN203912186U (en) * | 2014-06-16 | 2014-10-29 | 苏州东立电子有限公司 | Single-diaphragm double-magnetic-circuit loudspeaker |
| CN105992110A (en) * | 2016-05-05 | 2016-10-05 | 歌尔股份有限公司 | Sound generating device and sound generating device module group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111698621A (en) | 2020-09-22 |
| WO2020181893A1 (en) | 2020-09-17 |
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