CN108600921B - Acoustic generator module - Google Patents

Acoustic generator module Download PDF

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Publication number
CN108600921B
CN108600921B CN201810401828.6A CN201810401828A CN108600921B CN 108600921 B CN108600921 B CN 108600921B CN 201810401828 A CN201810401828 A CN 201810401828A CN 108600921 B CN108600921 B CN 108600921B
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sounder
shell
module
sound outlet
magnetic
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CN108600921A (en
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刘磊
谭飞
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Goertek Inc
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Goertek Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/025Magnetic circuit
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers

Abstract

The invention discloses a sounder module, which comprises a module shell and a sounder monomer accommodated in a cavity formed by the module shell, wherein the sounder monomer divides the cavity into a front cavity and a rear cavity which are isolated from each other, the side wall of the module shell is provided with a side sound outlet of the sounder module, and the front cavity comprises an upper cavity which is right opposite to the sounder monomer and a sound outlet channel which is used for communicating the upper cavity with the side sound outlet; the sounder module further comprises a recessed part which is formed by downwards recessing the inner side surface of the module shell corresponding to the sound outlet channel and corresponds to the side wall part of the sounder monomer close to the side sound outlet, and the recessed part forms a constraint structure. The sounder module provided by the invention improves the reliability, acoustic performance and tone quality of the sounder module by optimizing and improving the front cavity structure of the module, and avoids the condition that scrap iron impurities entering the front cavity from the outside of the module are directly adsorbed to a vibration system of a sounder monomer to cause irreversible damage to the structure of the sounder module.

Description

Acoustic generator module
Technical Field
The invention relates to the technical field of electroacoustic conversion. And more particularly, to a sounder module.
Background
The sounder module is an important acoustic device of the portable electronic equipment, is used for completing the conversion between an electric signal and an acoustic signal, and is an energy conversion device; with the demand of consumers for the lightness and thinness of mobile phones and the disadvantages of the module normal sound output design in practical use, the side sound output gradually becomes the mainstream of the current sound generator design. The sounder module generally comprises a module housing and a sounder unit accommodated in the module housing, wherein the sounder unit divides a cavity enclosed by the module housing into a front cavity and a rear cavity. The front cavity comprises a side sound outlet arranged on the side wall of the module shell, an upper cavity body right opposite to the sounder monomer and a sound outlet channel used for communicating the upper cavity body and the side sound outlet; the sound generated by the sounder monomer vibration system is transmitted to the outside of the sounder module through the upper cavity of the front cavity, the sound outlet channel and the side sound outlet.
The conventional sounder module structure front cavity with the side sound outlet and the sounder monomer are in direct transition, scrap iron impurities entering the front cavity from the outside of the module through the dust-proof structure of the whole machine sound outlet can be directly adsorbed on a vibration system of the sounder monomer, irreversible damage is caused to the structure of the sounder module structure, and meanwhile, the performance of the sounder is seriously attenuated and noise is accompanied.
Therefore, it is desirable to provide a new sounder module structure which overcomes the disadvantages of the prior art.
Disclosure of Invention
In view of the above problems, the present invention provides a sounder module. This sounder module is through the optimization improvement to the module front chamber structure, and the iron fillings class impurity of having avoided the outside entering front chamber of module can be by direct absorption to the free vibration system of sounder on, causes irreversible destruction to its structure for the emergence of the serious decay of sounder performance and the noise condition has been accompanied, has improved the reliability of sounder module, acoustic performance and tone quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a sounder module, which comprises a module shell and a sounder monomer accommodated in a cavity formed by the module shell, wherein the sounder monomer divides the cavity into a front cavity and a rear cavity which are isolated from each other, the side wall of the module shell is provided with a side sound outlet of the sounder module, and the front cavity comprises an upper cavity body right opposite to the sounder monomer and a sound outlet channel for communicating the upper cavity body with the side sound outlet;
the sounder module further comprises a recessed part which is formed by downwards recessing the inner side surface of the module shell corresponding to the sound outlet channel and corresponds to the side wall part of the sounder monomer close to the side sound outlet, and the recessed part forms a constraint structure.
In addition, preferably, the recessed portion is formed by extending one end of the side wall portion toward the side sound outlet, and a part of the side wall portion of the sounder unit close to the side sound outlet and the recessed portion together form the constraint structure.
In addition, it is preferable that the sound outlet channel is of an outward expanding structure along a direction from the upper cavity to the side sound outlet, and a lower wall surface of the sound outlet channel is an inclined plane inclined downward.
In addition, preferably, the constraint structure at least comprises a bottom surface which is horizontally arranged and side wall surfaces which are positioned at two sides of the bottom surface; the side wall surface is an inclined plane with the bottom inclined inwards.
In addition, it is preferable that the module case includes at least a first case and a second case combined and fixed together to form a cavity; wherein the front cavity is formed between the inner side surface of the first shell and the sounder unit; the sound outlet channel is formed between the inner side surfaces of the first shell, the side sound outlet is positioned on the side wall of the first shell, and the constraint structure is formed on the inner side surface of the first shell.
In addition, it is preferable that the module case includes at least a first case and a second case combined and fixed together to form a cavity; the front cavity is formed by the inner side surface of the first shell, the sounder monomer and part of the inner side surface of the second shell;
an upper cavity is formed between the inner side surface of the first shell and the sounder monomer;
the sound outlet channel is formed between the inner side surfaces of the second shell, the side sound outlet is positioned on the side wall of the second shell, and the constraint structure is formed on the inner side surface of the second shell.
In addition, it is preferable that the module case includes at least a first case and a second case combined and fixed together to form a cavity; notches which are matched with each other are correspondingly formed in the side walls of the first shell and the second shell, and the notches which are matched with each other form the side sound outlet; the front cavity is formed by the inner side surface of the first shell, the sounder monomer and part of the inner side surface of the second shell;
wherein the sound outlet channel is formed between a part of the inner side surface of the first shell and a part of the inner side surface of the second shell, and the constraint structure is formed on a part of the inner side surface of the second shell corresponding to the front cavity.
Furthermore, it is preferable that the sounder unit includes a magnetic circuit system;
the magnetic circuit system includes:
a magnetic yoke; the central magnet and the central magnetic conduction plate are arranged in the magnetic conduction yoke;
the magnetic conduction yoke comprises a tabular magnetic conduction bottom wall and a magnetic conduction side wall extending from the edge of the magnetic conduction bottom wall to the direction far away from the magnetic conduction bottom wall.
Furthermore, it is preferable that the sounder unit includes a magnetic circuit system;
the magnetic circuit system includes:
a lower magnetic conductive plate having a flat magnetic conductive bottom wall;
the central magnet and the central magnetic conduction plate are arranged in the center of the magnetic conduction bottom wall; and
the side magnetic circuit part is positioned on the magnetic conductive bottom wall;
wherein the side magnetic circuit part includes at least: and the edge magnet is positioned at the edge of the magnetic conductive bottom wall.
Furthermore, it is preferable that the sounder unit includes a magnetic circuit system;
the sounder monomer comprises two opposite first edges and two opposite second edges;
the magnetic circuit system includes:
a lower magnetic conductive plate having a flat magnetic conductive bottom wall;
the central magnet and the central magnetic conduction plate are arranged in the center of the magnetic conduction bottom wall;
a side magnetic path portion located at an edge of the first side magnetic bottom wall; and
the magnetic conduction side wall is positioned on the second side and extends from the edge of the magnetic conduction bottom wall to the direction far away from the magnetic conduction bottom wall;
wherein the side magnetic circuit portion includes at least a side magnet.
The invention has the following beneficial effects:
compared with the traditional sounder module structure, the module structure provided by the invention has the advantages that the constraint structure is designed on the surface of the inner side of the module shell corresponding to the sound outlet channel according to the shape of the sound outlet channel of the front cavity, and by utilizing the characteristic that the magnetic leakage at the side wall part of the sounder monomer is obviously higher than the magnetic leakage at the surface of the vibration system, and combining the constraint structure, the iron filings impurities entering the front cavity from the outside of the module can be directly adsorbed into the constraint structure, so that the iron filings impurities are prevented from being directly adsorbed onto the vibration system of the sounder monomer to cause irreversible damage to the structure, and the performance of the sounder is seriously attenuated and the noise condition is accompanied.
In addition, the constraint structure formed on the sound outlet channel provided by the invention is suitable for various sounder module shell structures, and can be formed on the module upper shell or the module lower shell after the module shell is subjected to ultrasonic treatment according to the actual module shell structure of the sound outlet channel. In addition, the module structure provided by the invention can also be suitable for sounder monomers with different structures, and the magnetic conduction side walls of the magnetic conduction yokes or side magnets of the sounder monomers can be used as magnetic leakage sources to be matched with the constraint structure to adsorb and contain scrap iron impurities, so that the quantity of the scrap iron impurities on a vibration system is greatly reduced, and a better scrap iron impurity centralized collection effect is obtained; the reliability, the acoustic performance and the tone quality of the sounder module are improved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view of a sounder module according to the present invention.
Fig. 2 shows an enlarged schematic view of a portion a of fig. 1.
FIG. 3 illustrates a front view of the sounder module provided by the present invention.
Fig. 4 shows a top view of the sounder module according to the present invention.
Fig. 5 shows a cross-sectional view B-B of fig. 4.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
In order to avoid the traditional sounder module structure, scrap iron impurities entering the front cavity of the module from the outside of the module can be directly adsorbed on a vibration system of a sounder monomer to cause irreversible damage to the structure, so that the performance of the sounder is seriously attenuated and the occurrence of noise is accompanied. The invention provides a sounder module structure, specifically, as shown in fig. 1 to 5, the sounder module 1 includes: the acoustic generator comprises a module housing 11 and an acoustic generator unit 2 accommodated in a cavity formed by the module housing 11, wherein the acoustic generator unit 2 divides the cavity into a front cavity and a rear cavity which are isolated from each other, a side sound outlet 12 of the acoustic generator module 1 is formed in the side wall of the module housing 11, and the front cavity comprises an upper cavity 13 which is right opposite to the acoustic generator unit 2 and a sound outlet channel 14 which is used for communicating the upper cavity 13 with the side sound outlet 12; the sound generator module 1 further comprises a recessed portion formed by downwardly recessing the inner side surface of the module housing 11 corresponding to the sound outlet channel 14, and the recessed portion corresponds to the side wall portion 21 of the sound generator unit 2 close to the side sound outlet 12, and forms a constraint structure.
In the existing sounder module structure, the sound channel and the upper cavity are mostly in a direct transition structure, and the side wall part of the sounder monomer is covered by the module shell, that is, the module shell forming the sound channel comprises a binding surface corresponding to and attached to the surface of the side wall part of the sounder monomer close to the side sound outlet. With reference to the structure shown in the figure, in the present embodiment, it is preferable that the recessed portion is formed by extending one end of the side wall portion 21 toward the side sound outlet 12, and the recessed portion and a portion of the side wall portion 21 of the sounder unit 2 close to the side sound outlet 12 form the constraining structure 3 together. That is, with the restricting structure 3, part of the side wall portion 21 of the sounder unit 2 is exposed to the sound emitting channel 14 by the restricting structure 3. It should be noted that, as for the extending length of the concave portion, it may extend to the middle position of the sound outlet channel 14, and may also extend to the edge position of the side sound outlet 12, which is not limited by the present invention. Through the design, the module structure that this embodiment provided, according to the ante-chamber passageway shape of sounding, in the inboard surface design constraint structure of module shell that the passageway of sounding corresponds, and utilize the characteristics that the magnetism leakage of sounder monomer lateral wall department is obviously higher than vibration system surface department magnetism leakage, make by the module outside iron fillings class impurity that gets into the ante-chamber can directly adsorb this constraint structure in, avoided iron fillings class impurity by direct adsorption to the free vibration system of sounder, cause irreversible destruction to its structure, make the serious decay of sounder performance and have the appearance of noise condition along with.
Further preferably, in the present embodiment, in the direction from the upper cavity 13 to the side sound outlet 12, the sound outlet channel 14 has a flaring structure, wherein the lower wall surface 141 of the sound outlet channel 14 has a downward inclined plane. The sound outlet channel structure of the external expanding structure ensures smooth sound outlet of the sounder module. In addition, in order to facilitate the constraint structure 3 to better adsorb the iron filings impurities entering the front cavity, preferably, the constraint structure 3 includes a bottom surface 31 arranged horizontally, and side wall surfaces 32 located at two sides of the bottom surface 31; the side wall surface 32 is formed as an inclined plane with the bottom portion inclined inward. Utilize above-mentioned design for iron fillings class impurity can be concentrated to restraint structure bottom surface 31, improves iron fillings class impurity's collection effect.
The constraint structure formed on the sound outlet channel is suitable for various sounder module shell structures, and can be formed on a module upper shell or a module lower shell after the module shell is subjected to ultrasonic treatment according to the actual module shell structure of the sound outlet channel.
Specifically, in combination with the drawing structure, the module case 11 provided in this embodiment includes a first case 111 and a second case 112 that are combined and fixed together to form a cavity; wherein the front cavity is formed between the inner side surface of the first shell 111 and the sounder unit 2; the sound outlet passage 14 is formed between the inner side surfaces of the first housing 111, the side sound outlet 12 is located on the side wall of the first housing 111, and the constraining structure 3 is formed on the inner side surface of the first housing 111.
As another embodiment, the constraint structure may also be formed on a second shell, specifically, the module housing includes a first shell and a second shell which are combined and fixed together to form a cavity; the front cavity is formed by the inner side surface of the first shell, the sounder monomer and part of the inner side surface of the second shell; wherein, an upper cavity is formed between the inner side surface of the first shell and the sounder monomer.
The sound outlet channel is formed between the inner side surfaces of the second shell, the side sound outlet is positioned on the side wall of the second shell, and the constraint structure is formed on the inner side surface of the second shell.
In addition, the invention also provides another embodiment, specifically, the module shell at least comprises a first shell and a second shell which are combined and fixed together to form a cavity; notches which are matched with each other are correspondingly formed in the side walls of the first shell and the second shell, and the notches which are matched with each other form the side sound outlet; the front cavity is formed by the inner side surface of the first shell, the sounder monomer and part of the inner side surface of the second shell; wherein the sound outlet channel is formed between a part of the inner side surface of the first shell and a part of the inner side surface of the second shell, and the constraint structure is formed on a part of the inner side surface of the second shell corresponding to the front cavity.
In addition, the module structure provided by the invention can also be suitable for sounder monomers with different structures, and the magnetic conduction side walls of the magnetic conduction yokes or the side magnets of the sounder monomers can be used as magnetic leakage sources to be matched with the constraint structure to adsorb and contain scrap iron impurities, so that the quantity of the scrap iron impurities on a vibration system is greatly reduced, and a better scrap iron impurity centralized collection effect is obtained. Specifically, as a specific embodiment, the sounder unit comprises a housing having a receiving cavity, and a magnetic circuit system is accommodated in the housing; in a specific implementation, the casing of the sounder unit may be a casing of the sounder unit itself, or a fixed wall provided by a module housing and used for forming a housing cavity for assembling a vibration system of the sounder unit and a magnetic circuit system, which is not limited in this embodiment. In this embodiment, the magnetic circuit system includes: a magnetic yoke; the central magnet and the central magnetic conduction plate are arranged in the magnetic conduction yoke; the magnetic conduction yoke comprises a flat magnetic conduction bottom wall and a magnetic conduction side wall extending from the edge of the magnetic conduction bottom wall to the direction far away from the magnetic conduction bottom wall; and part of the side wall part of the sounder single body side wall part, which is close to the side sound outlet and is formed by the magnetic conductive side wall alone, or part of the side wall part of the sounder single body side wall part which is formed by the magnetic conductive side wall and the sounder single body shell side wall together, is exposed to the sound outlet channel by the restraining structure.
In addition, as a preferred embodiment, when the sounder monomer has the side magnetic structure, the side magnet in the side magnetic structure serves as a magnetic leakage source, so that stronger magnetic field intensity can be provided, and the effect of the constraint structure on collecting the iron filings impurities is improved. Specifically, the sounder unit comprises a shell with a containing cavity, and a magnetic circuit system is contained in the shell; the magnetic circuit system includes: a lower magnetic conductive plate having a flat magnetic conductive bottom wall; the central magnet and the central magnetic conduction plate are arranged in the center of the magnetic conduction bottom wall; and a side magnetic circuit part positioned on the magnetic conductive bottom wall; wherein the side magnetic circuit part includes at least: the edge magnet is positioned at the edge of the magnetic conductive bottom wall; and part of the side wall part of the sounder monomer formed by the side magnet close to the side sound outlet or the side wall part of the sounder monomer formed by the side magnet and the side wall of the sounder monomer shell are exposed to the sound outlet channel by the restraining structure. In the embodiment, the limit magnet in the limit magnetic circuit part of the sounder monomer is matched with the constraint structure of the sounding channel, so that a better centralized collection effect of scrap iron impurities can be obtained.
In addition, the embodiment also provides a sounder single structure which comprises the magnetic conduction side wall of the magnetic conduction yoke and the side magnetic circuit part. Specifically, the sounder comprises a shell with a containing cavity, wherein a magnetic circuit system is contained in the shell; the sounder comprises two first opposing edges and two second opposing edges; the magnetic circuit system includes: a lower magnetic conductive plate having a flat magnetic conductive bottom wall; the central magnet and the central magnetic conduction plate are arranged in the center of the magnetic conduction bottom wall; a side magnetic path portion located at an edge of the first side magnetic bottom wall; the magnetic conduction side wall is positioned on the second side and extends from the edge of the magnetic conduction bottom wall to the direction far away from the magnetic conduction bottom wall; wherein the side magnetic circuit part at least comprises a side magnet; the side wall of the shell, the side magnet and the magnetic conduction side wall jointly form the side wall part of the sounder monomer. It should be noted that, in the implementation process of the present invention, the structure of the sidewall of the sounder unit near the side sound outlet may be determined according to the actual assembly structure requirement of the sounder module, that is, when the sidewall of the sounder unit near the side sound outlet corresponds to the side magnet, a part of the sidewall of the sounder unit formed by the side magnet and the sidewall of the housing is exposed to the sound outlet channel by the constraint structure. At the moment, the limit magnet in the first side magnetic circuit part of the sounder monomer is matched with the restraint structure of the sounding channel, so that a better centralized collection effect of scrap iron impurities can be obtained.
When the sidewall of the sounder unit close to the side sound outlet is formed by the magnetically conductive sidewall, a part of the sidewall of the sounder unit formed by the magnetically conductive sidewall and the side wall of the housing is exposed to the sound outlet channel by the restricting structure. At this time, the magnetic conduction side wall of the magnetic conduction yoke at the second side of the sounder monomer is matched with the restraint structure of the sounding channel.
It can be understood that no matter what kind of structure of the module casing and the sounder monomer structure is selected, the technical problem to be solved by the invention can be solved, namely, the iron filings impurities entering the front cavity from the outside of the module are prevented from being directly adsorbed to the vibration system of the sounder monomer, and the structure of the sound generator monomer is prevented from being irreversibly damaged. Correspondingly, the module structure provided by the invention uses the magnetic conduction side wall of the magnetic conduction yoke of the single sounder or the edge magnet as a magnetic leakage source to be matched with the constraint structure of the sounding channel to jointly form the constraint structure for adsorbing and containing the scrap iron impurities, so that the quantity of the scrap iron impurities on the vibration system is greatly reduced, and a better scrap iron impurity centralized collection effect is obtained; the reliability, the acoustic performance and the tone quality of the sounder module are improved.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.

Claims (10)

1. A sounder module comprises a module shell and a sounder monomer accommodated in a cavity formed by the module shell, wherein the sounder monomer divides the cavity into a front cavity and a rear cavity which are isolated from each other, a side sound outlet of the sounder module is formed in the side wall of the module shell, and the front cavity comprises an upper cavity right opposite to the sounder monomer and a sound outlet channel for communicating the upper cavity with the side sound outlet; it is characterized in that the preparation method is characterized in that,
the sounder module further comprises a recessed part which is formed by downward recessing of the inner side surface of the module shell corresponding to the sound outlet channel and corresponds to the side wall part of the sounder monomer close to the side sound outlet, the recessed part forms a constraint structure, and part of the side wall part of the sounder monomer is exposed to the sound outlet channel by the constraint structure.
2. The sounder module according to claim 1, wherein the recess extends from one end of the side wall toward the side sound outlet, and a portion of the side wall adjacent to the side sound outlet of the sounder unit and the recess together form the restraint structure.
3. The sounder module according to claim 1, wherein the sound outlet channel flares outwardly in a direction from the upper chamber to the side sound outlet, and wherein a lower wall surface of the sound outlet channel is a downwardly inclined plane.
4. The sounder module according to claim 1,
the constraint structure at least comprises a bottom surface which is horizontally arranged and side wall surfaces which are positioned at two sides of the bottom surface; the side wall surface is an inclined plane with the bottom inclined inwards.
5. The sounder module according to claim 1,
the module shell at least comprises a first shell and a second shell which are combined and fixed together to form a cavity; wherein the front cavity is formed between the inner side surface of the first shell and the sounder unit; the sound outlet channel is formed between the inner side surfaces of the first shell, the side sound outlet is positioned on the side wall of the first shell, and the constraint structure is formed on the inner side surface of the first shell.
6. The sounder module according to claim 1, wherein the module housing comprises at least first and second housings secured together to form a cavity; the front cavity is formed by the inner side surface of the first shell, the sounder monomer and part of the inner side surface of the second shell;
an upper cavity is formed between the inner side surface of the first shell and the sounder monomer;
the sound outlet channel is formed between the inner side surfaces of the second shell, the side sound outlet is positioned on the side wall of the second shell, and the constraint structure is formed on the inner side surface of the second shell.
7. The sounder module according to claim 1, wherein the module housing comprises at least first and second housings secured together to form a cavity; notches which are matched with each other are correspondingly formed in the side walls of the first shell and the second shell, and the notches which are matched with each other form the side sound outlet; the front cavity is formed by the inner side surface of the first shell, the sounder monomer and part of the inner side surface of the second shell;
wherein the sound outlet channel is formed between a part of the inner side surface of the first shell and a part of the inner side surface of the second shell, and the constraint structure is formed on a part of the inner side surface of the second shell corresponding to the front cavity.
8. The sounder module according to claim 1, wherein the sounder monomer comprises a magnetic circuitry;
the magnetic circuit system includes:
a magnetic yoke; the central magnet and the central magnetic conduction plate are arranged in the magnetic conduction yoke;
the magnetic conduction yoke comprises a tabular magnetic conduction bottom wall and a magnetic conduction side wall extending from the edge of the magnetic conduction bottom wall to the direction far away from the magnetic conduction bottom wall.
9. The sounder module according to claim 1, wherein the sounder monomer comprises a magnetic circuitry;
the magnetic circuit system includes:
a lower magnetic conductive plate having a flat magnetic conductive bottom wall;
the central magnet and the central magnetic conduction plate are arranged in the center of the magnetic conduction bottom wall; and
the side magnetic circuit part is positioned on the magnetic conductive bottom wall;
wherein the side magnetic circuit part includes at least: and the edge magnet is positioned at the edge of the magnetic conductive bottom wall.
10. The sounder module according to claim 1, wherein the sounder monomer comprises a magnetic circuitry;
the sounder monomer comprises two opposite first edges and two opposite second edges;
the magnetic circuit system includes:
a lower magnetic conductive plate having a flat magnetic conductive bottom wall;
the central magnet and the central magnetic conduction plate are arranged in the center of the magnetic conduction bottom wall;
a side magnetic path portion located at an edge of the first side magnetic bottom wall; and
the magnetic conduction side wall is positioned on the second side and extends from the edge of the magnetic conduction bottom wall to the direction far away from the magnetic conduction bottom wall;
wherein the side magnetic circuit portion includes at least a side magnet.
CN201810401828.6A 2018-04-28 2018-04-28 Acoustic generator module Active CN108600921B (en)

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CN105828548A (en) * 2015-11-16 2016-08-03 维沃移动通信有限公司 Electronic device
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CN106603775A (en) * 2016-12-20 2017-04-26 广东欧珀移动通信有限公司 Mobile terminal
CN206908833U (en) * 2017-05-24 2018-01-19 歌尔科技有限公司 Minitype acoustic generator

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