CN109246560B - Sound producing device - Google Patents
Sound producing device Download PDFInfo
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- CN109246560B CN109246560B CN201810919595.9A CN201810919595A CN109246560B CN 109246560 B CN109246560 B CN 109246560B CN 201810919595 A CN201810919595 A CN 201810919595A CN 109246560 B CN109246560 B CN 109246560B
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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
- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses a sound generating device, which comprises a vibration system and a magnetic circuit system, wherein the vibration system is arranged on the vibration system; the vibration system comprises a diaphragm, wherein the diaphragm is provided with a first surface and a second surface opposite to the first surface; the magnetic circuit system is positioned on one side of the second surface of the diaphragm; a first sound hole is formed in the position where the sound generating device is communicated with the space on the first surface side, and a second sound hole is formed in the position where the sound generating device is communicated with the space on the second surface side; and a waterproof and breathable piece is arranged on the second sounding hole. The technical scheme of the invention can realize the bidirectional sound production function of the sound production device.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to a sound production device.
Background
Terminal devices (such as mobile phones, cordless phones, notebook computers, digital cameras, bluetooth headsets, etc.) are ubiquitous in people's daily lives. For a speaker, an important component in a terminal device, the diaphragm radiates acoustic energy in a forward and backward direction when it is operated. Generally, the speaker utilizes only the acoustic energy radiated in the forward direction, and does not make good use of the acoustic energy radiated in the backward direction. Therefore, the existing loudspeaker can only realize the one-way sound production function generally, which restricts the application of the loudspeaker to a great extent.
Disclosure of Invention
The invention mainly aims to provide a sound generating device and aims to realize the bidirectional sound generating function of the sound generating device.
In order to achieve the purpose, the sound production device provided by the invention comprises a vibration system and a magnetic circuit system;
the vibration system comprises a diaphragm, wherein the diaphragm is provided with a first surface and a second surface opposite to the first surface;
the magnetic circuit system is positioned on one side of the second surface of the diaphragm;
a first sound hole is formed in the position where the sound generating device is communicated with the space on the first surface side, and a second sound hole is formed in the position where the sound generating device is communicated with the space on the second surface side;
and a waterproof and breathable piece is arranged on the second sounding hole.
Optionally, the sound generating device further comprises:
the first sound emitting hole and the second sound emitting hole are formed in the cavity wall of the accommodating cavity; and
the sounder comprises the vibration system and a magnetic circuit system, the sounder is contained in the containing cavity and comprises a front sound hole and a rear sound hole, the front sound hole is communicated with the first sound hole, and the rear sound hole is communicated with the second sound hole.
Optionally, the front sound hole is provided on a top surface of the sounder and the rear sound hole is provided on a bottom or side surface of the sounder.
Optionally, an air guide channel is formed between the surface of the sounder and the cavity wall of the accommodating cavity, and the air guide channel is communicated with the rear sounding hole and the second sounding hole.
Optionally, the sounder is fixedly connected to a cavity wall of the accommodating cavity surrounding the first sounding hole, and the front sounding hole is opposite to the first sounding hole.
Optionally, the cavity wall of the accommodating cavity is provided with abdicating holes and the second sound-emitting holes which are arranged at intervals, the side wall of each abdicating hole is convexly provided with a connecting piece, the strength of each connecting piece is higher than that of plastic, each connecting piece extends along the circumferential direction of the corresponding abdicating hole, and the inner side of each connecting piece forms the first sound-emitting hole;
the sounder is fixedly connected to the connecting piece, and the front sound hole and the first sound hole are arranged oppositely.
Optionally, the housing includes a first housing and a second housing, the first housing covers the second housing and encloses with the second housing to form the accommodating cavity, the first housing has the first sound emitting hole, and the second housing has the second sound emitting hole.
Optionally, the housing is a cuboid, and the first sound emitting hole and the second sound emitting hole are arranged oppositely.
Optionally, the first shell and the second shell are glued or ultrasonically welded.
Optionally, the sound generating device further comprises a dust screen, and the dust screen is arranged at the first sound generating hole and used for plugging the first sound generating hole.
Optionally, the dust screen is accommodated in the accommodating cavity, the dust screen includes a screen body and a first frame surrounding the outer edge of the screen body, the first frame surrounds the first sound emitting hole and is fixedly connected to the cavity wall of the accommodating cavity surrounding the first sound emitting hole, the screen body covers the first sound emitting hole, and the surface of the sound generator surrounding the front sound emitting hole surrounds and is fixedly connected to the first frame.
Optionally, the waterproof breathable piece includes a waterproof breathable layer and a second frame surrounding the outer edge of the waterproof breathable layer, the second frame is disposed around the second sound-emitting hole, the waterproof breathable layer covers the second sound-emitting hole, and the second frame is fixedly connected to the cavity wall of the accommodating cavity surrounding the second sound-emitting hole or fixedly connected to the outer surface of the housing surrounding the second sound-emitting hole;
or the waterproof breathable piece is a waterproof breathable layer, and the outer edge of the waterproof breathable layer is integrally injection-molded on the side wall of the second sound-emitting hole.
Optionally, the sound generating device further comprises a waterproof tape, and the waterproof tape is arranged on the surface of the shell and surrounds the first sound generating hole;
and/or reinforcing ribs are transversely arranged on two opposite side walls of the first sound-emitting hole.
Optionally, the sound generating device includes an annular frame, the vibration system is installed at a first end of the frame, the magnetic circuit system is installed in the frame and located below the vibration system, the first end of the frame is further provided with a front cover plate, the front cover plate is provided with the first sound generating hole, a second end of the frame is provided with a rear cover plate, and the rear cover plate is provided with the second sound generating hole.
According to the technical scheme of the invention, when the sound production device works, the vibrating diaphragm of the vibration system generates vibration to respectively radiate sound wave energy to the positive direction (the first surface side of the vibrating diaphragm) and the reverse direction (the second surface side of the vibrating diaphragm). At the moment, the sound wave energy radiated in the positive direction flows out through a first sound emitting hole on the sound emitting device, and the sound is radiated outwards from the front of the sound emitting device to emit sound; the backward radiated sound wave energy flows out through a second sound emitting hole on the sound emitting device and radiates outwards to emit sound from the side surface or the reverse surface of the sound emitting device. Therefore, the bidirectional sound production function of the sound production device is realized, the utilization rate of sound wave energy of the sound production device is improved, and the application range of the sound production device is widened. Compared with most of the existing double-diaphragm loudspeaker products on the market, the sound production device also has the advantages of simple structure, low process difficulty, high reliability and the like, the double-diaphragm design is adopted, sound waves generated by the first diaphragm are transmitted to the second diaphragm to generate vibration and further produce sound under the condition that the second diaphragm is made of non-breathable material, and transmission loss can be generated due to the fact that the second diaphragm produces sound through vibration.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the sound generating device shown in FIG. 1;
FIG. 3 is an exploded view of the sound generator of FIG. 1;
FIG. 4 is a sectional view of the sound generator of FIG. 1;
FIG. 5 is a schematic structural diagram of a sound generating device according to another embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a sound generating device according to still another embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a sound generating device according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of the sound generating device applied to the terminal device.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a sound generating device 100, aiming at realizing the bidirectional sound generating function of the sound generating device 100. The sound generating device 100 includes a vibration system 70 and a magnetic circuit system 80 (refer to fig. 7);
the vibration system 70 includes a diaphragm having a first surface and a second surface opposite the first surface;
the magnetic circuit system 80 is located on one side of the second surface of the diaphragm;
a first sound hole 111 is formed at a position where the sound generating device 100 communicates with the space on the first surface side, and a second sound hole 131 is formed at a position where the sound generating device 100 communicates with the space on the second surface side;
a waterproof and air-permeable member 40 is provided on the second sound-emitting hole 131.
When the sound generating apparatus 100 is operated, the diaphragm of the vibration system 70 vibrates to radiate acoustic energy in the forward direction (the first surface side of the diaphragm) and the reverse direction (the second surface side of the diaphragm), respectively. At this time, the sound wave energy radiated in the forward direction flows out through the first sound emitting hole 111 on the sound emitting device 100, and radiates sound from the front of the sound emitting device 100; the backward radiated sound wave energy flows out through the second sound emitting hole 131 of the sound emitting device 100, and radiates sound from the side or the reverse of the sound emitting device 100. Therefore, the bidirectional sound generating function of the sound generating device 100 is realized, the utilization rate of the sound wave energy of the sound generating device 100 is improved, and the application range of the sound generating device 100 is widened. Compared with most of the existing double-diaphragm loudspeaker products on the market, the sound production device 100 provided by the invention has the advantages of simple structure, low process difficulty, high reliability and the like, the double-diaphragm design is adopted, sound waves generated by the first diaphragm are transmitted to the second diaphragm to generate vibration and further produce sound under the condition that the second diaphragm is made of a non-breathable material, and the transmission loss can be generated because the second diaphragm produces sound through vibration, and the waterproof breathable piece 40 is adopted in the invention, so that the sound is transmitted through micropores of the sound, the transmission loss is not easy to generate, and the excellent sound production characteristic in the second direction can be realized.
The following will explain the specific structure of the sound generating device 100 of the present invention.
As shown in fig. 1 to 4, in an embodiment of the sound generating device 100 of the present invention, the sound generating device 100 further includes:
a housing 10, wherein a housing cavity (not labeled) is formed in the housing 10, and the first sound emitting hole 111 and the second sound emitting hole 131 are opened on a cavity wall of the housing cavity; and
the sounder 20 comprises the vibration system and the magnetic circuit system, the sounder 20 is accommodated in the accommodating cavity, the sounder 20 comprises a front sound hole 20a and a rear sound hole (not marked), the front sound hole 20a is communicated with the first sound hole 111, and the rear sound hole is communicated with the second sound hole 131.
Specifically, the front sound hole 20a is provided on the top surface of the sounder 20, and the rear sound hole is provided on the bottom surface or the side surface of the sounder 20. Therefore, the mutual interference between the forward sound wave and the backward sound wave of the diaphragm can be effectively avoided, so that the bidirectional sound quality of the sound generating device 100 is better.
An air guide channel 10a is formed between the surface of the sounder 20 and the cavity wall of the accommodating cavity, and the air guide channel 10a is communicated with the rear sound hole and the second sound hole 131. Thus, the rear sound hole and the second sound hole 131 are communicated, so that the bidirectional sound generating function of the sound generating device 100 is realized more easily, and the structure is simple, the processing is convenient, and the assembly is convenient.
In this embodiment, the housing 10 is substantially rectangular, and the accommodating cavity therein is also substantially rectangular, and the top wall and the bottom wall of the accommodating cavity are respectively provided with the first sound emitting hole 111 and the second sound emitting hole 131. The sounder 20 is also substantially rectangular in shape and is smaller than the receiving cavity so that the sounder 20 can be received in the receiving cavity.
It can be understood that the front cover of the sound generator 20 is provided with a front sound hole 20a for emitting sound waves, and the plastic housing of the sound generator 20 is provided with a rear sound hole for balancing the air pressure inside the sound generator 20 (of course, in other embodiments, the rear sound hole for balancing the air pressure inside the sound generator 20 may also be provided on the magnetic circuit system). When the sound generator 20 is accommodated in the accommodating cavity, the sound generator 20 may be directly connected to the cavity wall of the accommodating cavity by a snap connection, a screw connection, a threaded connection, a glue connection, or other reasonable and effective connection methods to realize fixation, or indirectly connected to the cavity wall of the accommodating cavity by an intermediate member (e.g., a bracket, etc.) to realize fixation. At this time, the front sound hole 20a of the sounder 20 is disposed facing the first sound hole 111, and communicates with the first sound hole 111. The specific communication mode may be that the communication is realized through a pipe such as a conduit, or the outer surface of the front cover (of the sound generator 20) surrounding the front sound hole 20a is closely attached to the cavity wall of the accommodating cavity surrounding the first sound hole 111, so that the front sound hole 20a of the sound generator 20 is directly communicated with the first sound hole 111. Meanwhile, since the size of the sound generator 20 is smaller than the size of the accommodating chamber, a certain distance can exist between the surface of the sound generator 20 and the chamber wall of the accommodating chamber to form an air guide channel 10a, so that the air guide channel 10a is utilized to communicate the rear sound hole of the sound generator 20 with the second sound hole 131 (of course, in some other embodiments, the rear sound hole may be opened at the bottom surface of the sound generator 20, and at this time, there is no distance between the surface of the sound generator 20 and the chamber wall of the accommodating chamber).
Thus, when the sound generating apparatus 100 is operated, the diaphragm of the sound generator 20 vibrates to radiate sound wave energy in the forward direction (the side of the diaphragm facing the first sound emitting hole 111) and the reverse direction (the side of the diaphragm facing away from the first sound emitting hole 111), respectively. At this time, the sound wave energy radiated in the forward direction flows out through the front sound hole 20a of the sound generator 20 and through the first sound hole 111 of the casing 10 of the sound generating device 100, and radiates sound from the front of the sound generating device 100; the backward radiated sound wave energy flows into the air guide passage 10a in the casing 10 of the sound generating device 100 through the rear sound hole of the sound generator 20 and then flows out through the second sound hole 131 of the casing 10 of the sound generating device 100 to radiate sound from the side or the reverse side of the sound generating device 100. Therefore, the bidirectional sound generating function of the sound generating device 100 is realized, the utilization rate of the sound wave energy of the sound generating device 100 is improved, and the application range of the sound generating device 100 is widened. Compared with most of the existing double-diaphragm loudspeaker products on the market, the sound production device 100 provided by the invention has the advantages of simple structure, low process difficulty, high reliability and the like, the double-diaphragm design is adopted, sound waves generated by the first diaphragm are transmitted to the second diaphragm to generate vibration and further produce sound under the condition that the second diaphragm is made of a non-breathable material, and the transmission loss can be generated because the second diaphragm produces sound through vibration, and the waterproof breathable piece 40 is adopted in the invention, so that the sound is transmitted through micropores of the sound, the transmission loss is not easy to generate, and the excellent sound production characteristic in the second direction can be realized.
In an embodiment of the sound generating device 100 of the present invention, the sound generator 20 is fixedly connected to a cavity wall of the accommodating cavity surrounding the first sound emitting hole 111, and the front sound emitting hole 20a is disposed opposite to the first sound emitting hole 111.
That is, the surface of the sounder 20 surrounding the front sound hole 20a is disposed around the first sound hole 111, and is fixedly connected to the cavity wall of the housing cavity surrounding the first sound hole 111.
That is, the outer surface of the front cover (of the sound generator 20) surrounding the front sound hole 20a surrounds the first sound hole 111, and is fixedly connected to the cavity wall of the accommodation cavity surrounding the first sound hole 111. Specifically, the front cover and the cavity wall can be directly and fixedly connected by gluing, fastening, screwing or other reasonable and effective methods, or indirectly and fixedly connected by an intermediate member (such as a sealing ring, a wind guide ring, a frame, a bracket, etc.) and by gluing, fastening, screwing or other reasonable and effective methods.
In this way, the front sound hole 20a is located close to the first sound hole 111, so that the front sound hole 20a faces the first sound hole 111, and the sound wave energy radiated in the forward direction from the sound generator 20 can be smoothly radiated to the outside through the first sound hole 111. And, simple structure, it is convenient to make, and the assembly is swift, and stability, reliability are high.
As shown in fig. 1 to 4, in an embodiment of the sound generating apparatus 100 of the present invention, the cavity wall of the accommodating cavity is provided with a pair of spaced-apart abdicating holes and the second sound generating holes 131, a connecting piece 115 is protruded from a sidewall of the abdicating hole, strength of the connecting piece 115 is higher than that of plastic, the connecting piece 115 extends along a circumferential direction of the abdicating hole, and an inner side of the connecting piece 115 is formed as the first sound generating hole 111;
the sound generator 20 is fixedly connected to the connecting member 115, and the front sound hole 20a is disposed opposite to the first sound hole 111.
In this embodiment, the top wall of the accommodating cavity inside the housing 10 is provided with a yielding hole, and the bottom wall of the accommodating cavity inside the housing 10 is provided with a second sounding hole 131. The mounting groove has been seted up to the lateral wall in the hole of stepping down to, the mounting groove sets up and end to end intercommunication along the circumference extension in the hole of stepping down, in order to form annular mounting groove. At this time, the connecting member 115 is annularly disposed and has an outer edge and an inner edge, the connecting member 115 is disposed around the receding hole, the outer edge of the connecting member 115 is inserted into and held in the mounting groove, and the inner edge of the connecting member 115 surrounds the first sound-emitting hole 111. It should be noted that the structure of the connecting member 115, in which the outer edge is inserted and held in the mounting groove, can be obtained by injection molding in a mold.
At this time, the outer surface of the front cover (of the sound generator 20) surrounding the front sound hole 20a surrounds the first sound hole 111, and is fixedly coupled to the lower surface of the connector 115 surrounding the first sound hole 111. Specifically, the front cover and the connecting member 115 may be directly and fixedly connected by gluing, fastening, screwing, or other reasonable and effective methods, or indirectly and fixedly connected by an intermediate member (e.g., a sealing ring, a wind guide ring, a frame, a bracket, etc.) by gluing, fastening, screwing, or other reasonable and effective methods.
In addition, the connecting member 115 may be generally made of a rigid material, such as a steel sheet or a ceramic sheet, so that its strength is higher than that of plastic.
Therefore, the thickness of the side wall of the first sound-emitting hole 111 can be effectively reduced, the size of the sound-emitting device 100 can be reduced, the stability of the sound-emitting device 20 in arrangement can be effectively improved, the structural stability of the sound-emitting device 100 can be improved, and the sound-emitting quality of the sound-emitting device 100 can be improved.
As shown in fig. 1 to 4, in an embodiment of the sound generating device 100 of the present invention, the housing 10 includes a first housing 11 and a second housing 13, the first housing 11 covers the second housing 13 and encloses with the second housing 13 to form the accommodating cavity, the first housing 11 is provided with the first sound generating hole 111, and the second housing 13 is provided with the second sound generating hole 131.
In this way, the first housing 11 or the second housing 13 can be opened or closed, so that the accommodating cavity inside the casing 10 can be exposed or hidden, thereby facilitating arrangement, and connection and fixation of the components therein. Thus, the production efficiency of the sound generating device 100 can be greatly improved, and the reliability thereof can be improved.
Further, the housing 10 has a rectangular parallelepiped shape, and the first sound emitting hole 111 and the second sound emitting hole 131 are disposed opposite to each other. Thus, not only the structure of the sound generating device 100 is simpler, the processing is more convenient, the assembly is more rapid, but also the bidirectional sound generation of the sound generating device 100 is more smooth.
Specifically, the first housing 11 and the second housing 13 may be connected by gluing, ultrasonic welding, or other reasonable and effective means.
In addition, as shown in fig. 3 and 4, in this embodiment, the first housing 11 includes a housing body 113 and a connecting member 115, and the housing body 113 covers the second housing 13 and encloses with the second housing 13 to form the accommodating cavity. At this moment, the hole of stepping down that runs through this shell body 113 is offered to the internal surface that is located the top of shell body 113, and the mounting groove has been offered to the lateral wall in the hole of stepping down to, the mounting groove sets up and end to end intercommunication along the circumference extension in the hole of stepping down to form annular mounting groove. At this time, the connecting member 115 is annularly disposed and has an outer edge and an inner edge, the connecting member 115 is disposed around the receding hole, the outer edge of the connecting member 115 is inserted into and held in the mounting groove, and the inner edge of the connecting member 115 surrounds the first sound-emitting hole 111.
As shown in fig. 1 to 4, in an embodiment of the sound generating device 100 of the present invention, the sound generating device 100 further includes a dust screen 30, and the dust screen 30 is disposed at the first sound emitting hole 111 and blocks the first sound emitting hole 111.
It should be noted that the dust screen 30 may be disposed on the outer surface of the housing 10. Specifically, the outer edge of the dust screen 30 is disposed around the first sound emitting hole 111 and is fixedly connected to the outer surface of the housing 10 around the first sound emitting hole 111, and at this time, the middle portion of the dust screen 30 covers the first sound emitting hole 111 from the outside to play a role in protecting dust and adjusting the acoustic performance of the first sound emitting hole 111. In addition, the outer edge of the dust screen 30 is fixedly connected with the outer surface of the housing 10, which can be directly realized by glue joint, or indirectly realized by middle parts such as frames, sealing rings and the like by glue joint or other reasonable and effective modes.
Similarly, the dust screen 30 may also be arranged on the inner surface of the housing 10, i.e. on the wall of the receiving cavity. Specifically, the outer edge of the dust screen 30 is disposed around the first sound emitting hole 111 and is fixedly connected to the cavity wall of the accommodating cavity surrounding the first sound emitting hole 111 (i.e., is fixedly connected to the inner surface of the housing 10 surrounding the first sound emitting hole 111), and at this time, the middle portion of the dust screen 30 covers the first sound emitting hole 111 from the inner side, so as to play a role in protecting dust and adjusting the acoustic performance of the first sound emitting hole 111. In addition, the outer edge of the dust screen 30 is fixedly connected with the cavity wall of the accommodating cavity, and can be directly realized by adopting a glue joint mode, or indirectly realized by adopting glue joints or other reasonable and effective modes through middle parts such as a frame, a sealing ring and the like.
Further, the dust screen 30 may be further provided in the first sound emitting hole 111. Specifically, the outer edge of the dust screen 30 surrounds the first sound emitting hole 111 and is fixedly connected to the side wall of the first sound emitting hole 111, and at this time, the middle portion of the dust screen 30 blocks the first sound emitting hole 111 from the first sound emitting hole 111, so as to protect from dust and adjust the acoustic performance of the first sound emitting hole 111. In addition, the fixed connection between the outer edge of the dust screen 30 and the side wall of the first sound emitting hole 111 can be directly realized by adopting an integral injection molding manner (as shown in fig. 5).
In addition, the dust screen 30 in this embodiment may be a conventional dust screen cloth, or a dust screen cloth with a waterproof function.
As shown in fig. 1 to 4, in an embodiment of the sound generating apparatus 100 of the present invention, the dust screen 30 is accommodated in the accommodating cavity, the dust screen 30 includes a screen body 31 and a first frame 33 surrounding the outer edge of the screen body 31, the first frame 33 surrounds the first sound emitting hole 111 and is fixedly connected to a cavity wall of the accommodating cavity surrounding the first sound emitting hole 111, the screen body 31 covers the first sound emitting hole 111, and a surface of the sound generator 20 surrounding the front sound emitting hole 20a surrounds and is fixedly connected to the first frame 33.
Specifically, the first frame 33 is a waterproof gasket, which may be further made of waterproof foam, the first frame 33 is bonded or injection-molded to the edge of the mesh body 31, and then one side of the first frame 33 and the edge of the mesh body 31 is bonded and fixed to the cavity wall of the accommodating cavity, and the other side is bonded and fixed to the surface of the sound generator 20. The waterproof foam with elasticity can achieve better waterproof sealing effect between the sounder 20 and the housing 10 after being squeezed.
The arrangement is simple in structure, convenient to manufacture, fast to assemble, high in stability and reliability, and the dustproof net 30 is located in the accommodating cavity, not easy to damage and good in durability.
In addition, the net body 31 in this embodiment may be a conventional dustproof net cloth, or a dustproof net cloth with a waterproof function.
As shown in fig. 1 to 4, in an embodiment of the sound generating device 100 of the present invention, the sound generating device 100 further includes a waterproof air-permeable member 40, and the waterproof air-permeable member 40 is disposed at the second sound generating hole 131 and blocks the second sound generating hole 131.
It should be noted that the waterproof and air-permeable member 40 may be provided on the outer surface of the housing 10. Specifically, the outer edge of the waterproof air-permeable member 40 is disposed around the second sound-emitting hole 131 and is fixedly coupled to the outer surface of the case 10 around the second sound-emitting hole 131, and at this time, the middle portion of the waterproof air-permeable member 40 covers the second sound-emitting hole 131 from the outside to play a role in waterproof air-permeability and adjusting the acoustic performance of the second sound-emitting hole 131. In addition, the outer edge of the waterproof and air-permeable member 40 is fixedly connected to the outer surface of the housing 10, either directly by gluing or indirectly by gluing or other reasonable and effective means through intermediate members such as frames and sealing rings.
Similarly, the waterproof and breathable element 40 may also be provided on the inner surface of the casing 10, i.e. on the wall of the housing chamber. Specifically, the outer edge of the waterproof air-permeable member 40 is disposed around the second sound-emitting hole 131 and is fixedly connected to the wall of the accommodating chamber surrounding the second sound-emitting hole 131 (i.e., fixedly connected to the inner surface of the housing 10 surrounding the second sound-emitting hole 131), and at this time, the middle portion of the waterproof air-permeable member 40 covers the second sound-emitting hole 131 from the inside, so as to perform the functions of waterproof air-permeability and adjusting the acoustic performance of the second sound-emitting hole 131. In addition, the outer edge of the waterproof and air-permeable member 40 is fixedly connected with the wall of the accommodating cavity, which can be directly realized by adopting a glue joint mode, and can also be indirectly realized by adopting a glue joint or other reasonable and effective modes through middle members such as a frame, a sealing ring and the like.
Further, the waterproof air-permeable member 40 may be further provided in the second sound-emitting hole 131. Specifically, the outer edge of the waterproof air-permeable member 40 is disposed around the second sound-emitting hole 131 and is fixedly connected to the side wall of the second sound-emitting hole 131, and at this time, the middle portion of the waterproof air-permeable member 40 blocks the second sound-emitting hole 131 from the second sound-emitting hole 131, so as to perform the functions of waterproof air-permeability and adjusting the acoustic performance of the second sound-emitting hole 131. In addition, the fixed connection between the outer edge of the waterproof and air-permeable member 40 and the side wall of the second sound-emitting hole 131 can be directly realized by adopting an integral injection molding manner (as shown in fig. 5).
In addition, the waterproof air-permeable member 40 in the present embodiment may be a waterproof air-permeable layer 41 directly, or a structure in which the waterproof air-permeable layer 41 is mounted on the outer edge of a frame. The waterproof breathable layer 41 may be a single-layer structure including only one layer of waterproof breathable film, or may be a multi-layer composite structure including at least one layer of waterproof breathable film and mesh cloth. The waterproof breathable film can be a polytetrafluoroethylene waterproof breathable film (EPTFE film), a thermoplastic polyurethane waterproof breathable film (TPU film), a polyurethane waterproof breathable film (PU film) or other waterproof breathable films. The mesh can be a PP anti-sticking non-woven fabric or other mesh.
It can be understood that, in order to facilitate the assembly of the waterproof breathable member 40 and improve the stability of the waterproof breathable member 40, the waterproof breathable member 40 includes a waterproof breathable layer 41 and a second frame 43 surrounding the outer edge of the waterproof breathable layer 41, the second frame 43 is disposed around the second sound-generating hole 131, the waterproof breathable layer 41 covers the second sound-generating hole 131, and the second frame 43 is fixedly connected to the cavity wall of the accommodating cavity surrounding the second sound-generating hole 131 or fixedly connected to the outer surface of the housing 10 surrounding the second sound-generating hole 131. Specifically, the second frame 43 is a waterproof gasket, which may further be a waterproof foam, the second frame 43 is bonded or injection-molded to the edge of the waterproof and breathable layer 41, and then the edges of the second frame 43 and the waterproof and breathable layer 41 may be fixedly connected to the cavity wall of the accommodating cavity surrounding the second sound-emitting hole 131 by bonding or other reasonable and effective methods, or fixedly connected to the outer surface of the housing 10 surrounding the second sound-emitting hole 131.
As shown in fig. 1 to 4, in an embodiment of the sound generating apparatus 100 of the present invention, the second frame 43 is fixedly connected to the outer surface of the casing 10 surrounding the second sound generating hole 131, and thus, the arrangement is simple in structure, convenient to manufacture, fast to assemble, and high in stability and reliability.
As shown in fig. 1 to 4, in an embodiment of the sound generating device 100 of the present invention, in order to improve the sealing performance of a product using the sound generating device 100 of the present invention around the first sound emitting hole 111, the sound generating device 100 further includes a waterproof tape 50, and the waterproof tape 50 is disposed on the surface of the housing 10 and surrounds the first sound emitting hole 111.
As shown in fig. 6, in an embodiment of the sound generating apparatus 100 of the present invention, two opposite sidewalls of the first sound generating hole 111 are provided with a rib 1111. So, the middle part of dust screen 30 can be fixed connection in strengthening rib 1111 to make its stability that sets up can strengthen, and then avoid dust screen 30 to receive the air current influence and vibrate.
As shown in fig. 7, in an embodiment of the sound generating apparatus 100 of the present invention, the sound generating apparatus 100 includes an annular frame 60a, the vibration system 70 is mounted at a first end of the frame 60a, the magnetic circuit system 80 is mounted in the frame 60a and located below the vibration system 70, a front cover plate 60b is further disposed at the first end of the frame 60a, the first sound generating hole 111 is disposed on the front cover plate 60b, a rear cover plate 60c is disposed at a second end of the frame 60a, and the second sound generating hole 131 is disposed on the rear cover plate 60 c.
In addition, in this embodiment, the sound generating apparatus 100 further includes a dust screen 30 and a waterproof air-permeable member 40, the waterproof air-permeable member 40 is disposed at the second sound emitting hole 131 and blocks the second sound emitting hole 131, and the dust screen 30 is disposed at the first sound emitting hole 111 and blocks the first sound emitting hole 111.
In addition, the shape of the housing 10 may be set according to actual conditions, for example, a rectangular parallelepiped shape, a square shape, a cylindrical shape, or other shapes.
The shape of the first sound emitting hole 111 and the shape of the second sound emitting hole 131 may be set according to actual conditions, for example, as a circle, a rectangle, a square, or other irregular shapes.
As shown in fig. 8, the present invention also provides a terminal device 300, the terminal device 300 includes a protective casing 200 and the sound generating device 100 as described above installed in the protective casing 200, and the specific structure of the sound generating device 100 refers to the foregoing embodiments. Since the terminal device 300 adopts all technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by all the technical solutions of all the foregoing embodiments are achieved, and are not described in detail herein. The protective case 200 is provided with a first terminal sound hole 210 communicated with the first sound hole 111, and a second terminal sound hole 230 communicated with the second sound hole 131.
Specifically, the protective case 200 has a front surface, a back surface and a side surface connecting the front surface and the back surface, which are oppositely arranged, the first terminal sound hole 210 is provided on the front surface of the protective case 200, and the second terminal sound hole 230 is provided on the back surface of the protective case 200 (as shown in fig. 8); or,
the first terminal sound hole 210 is provided on a side surface of the protective case 200, and the second terminal sound hole 230 is provided on a reverse surface (not shown) of the protective case 200; or,
the first terminal acoustic hole 210 is provided on the front surface of the protective case 200, and the second terminal acoustic hole 230 is provided on the side surface (not shown) of the protective case 200.
The terminal device 300 may be a mobile phone, a cordless phone, a notebook computer, a digital camera, a bluetooth headset, a tablet computer, MP3, MP4, or other terminal devices 300.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A sound production device comprises a vibration system and a magnetic circuit system;
the vibration system comprises a diaphragm, wherein the diaphragm is provided with a first surface and a second surface opposite to the first surface;
the magnetic circuit system is positioned on one side of the second surface of the diaphragm; the method is characterized in that:
a first sound hole is formed in the position where the sound generating device is communicated with the space on the first surface side, and a second sound hole is formed in the position where the sound generating device is communicated with the space on the second surface side;
a waterproof and breathable piece is arranged on the second sounding hole;
the sound generating device further includes:
the first sound emitting hole and the second sound emitting hole are formed in the cavity wall of the accommodating cavity; and
the sounder comprises the vibration system and a magnetic circuit system, the sounder is contained in the containing cavity and comprises a front sound hole and a rear sound hole, the front sound hole is communicated with the first sound hole, and the rear sound hole is communicated with the second sound hole.
2. The sound generating apparatus of claim 1, wherein the front sound hole is provided on a top surface of the sound generator, and the rear sound hole is provided on a bottom surface or a side surface of the sound generator.
3. The sound-generating apparatus as claimed in claim 1, wherein an air guide channel is formed between the surface of the sound generator and the wall of the housing chamber, and the air guide channel connects the rear sound hole and the second sound hole.
4. The sound generating apparatus as claimed in claim 1, wherein the sound generator is fixedly connected to a wall of the housing chamber surrounding the first sound emitting hole, and the front sound emitting hole is disposed opposite to the first sound emitting hole.
5. The sounding device according to claim 1, wherein the cavity wall of the accommodating cavity is provided with spaced abdicating holes and the second sounding holes, the side wall of each abdicating hole is convexly provided with a connecting piece, the strength of each connecting piece is higher than that of plastic, each connecting piece extends along the circumferential direction of the abdicating hole, and the inner side of each connecting piece is formed as the first sounding hole;
the sounder is fixedly connected to the connecting piece, and the front sound hole and the first sound hole are arranged oppositely.
6. The sound generating apparatus as claimed in claim 1, wherein the casing includes a first casing and a second casing, the first casing covers the second casing and encloses with the second casing to form the accommodating chamber, the first casing defines the first sound generating hole, and the second casing defines the second sound generating hole.
7. The sound generating apparatus as claimed in claim 6, wherein said housing has a rectangular parallelepiped shape, and said first sound emitting hole and said second sound emitting hole are disposed oppositely.
8. The sound generating apparatus of claim 6, wherein the first housing is glued or ultrasonically welded to the second housing.
9. The sound generating apparatus according to any one of claims 1 to 8, further comprising a dust screen disposed at the first sound hole and blocking the first sound hole.
10. The sound generating apparatus as claimed in claim 9, wherein the dust screen is accommodated in the accommodating chamber, the dust screen includes a screen body and a first frame surrounding the outer edge of the screen body, the first frame surrounds the first sound emitting hole and is fixedly connected to the chamber wall of the accommodating chamber surrounding the first sound emitting hole, the screen body covers the first sound emitting hole, and the surface of the sound generator surrounding the front sound emitting hole surrounds and is fixedly connected to the first frame.
11. The sound generating apparatus according to any one of claims 1 to 8, wherein the waterproof and breathable member comprises a waterproof and breathable layer and a second rim surrounding an outer edge of the waterproof and breathable layer, the second rim is disposed around the second sound generating hole, the waterproof and breathable layer covers the second sound generating hole, and the second rim is fixedly connected to a wall of the accommodating cavity surrounding the second sound generating hole or fixedly connected to an outer surface of the housing surrounding the second sound generating hole;
or the waterproof breathable piece is a waterproof breathable layer, and the outer edge of the waterproof breathable layer is integrally injection-molded on the side wall of the second sound-emitting hole.
12. The sound generating device according to any one of claims 1 to 8, further comprising a waterproof tape provided on a surface of the housing and disposed around the first sound emitting hole;
and/or reinforcing ribs are transversely arranged on two opposite side walls of the first sound-emitting hole.
13. The sound generating apparatus according to claim 1, wherein the sound generating apparatus comprises an annular frame, the vibration system is mounted at a first end of the frame, the magnetic circuit system is mounted in the frame and located below the vibration system, the first end of the frame is further provided with a front cover plate, the front cover plate is provided with the first sound generating hole, the second end of the frame is provided with a rear cover plate, and the rear cover plate is provided with the second sound generating hole.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810919595.9A CN109246560B (en) | 2018-08-13 | 2018-08-13 | Sound producing device |
| PCT/CN2019/089450 WO2020034727A1 (en) | 2018-08-13 | 2019-05-31 | Sound producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810919595.9A CN109246560B (en) | 2018-08-13 | 2018-08-13 | Sound producing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109246560A CN109246560A (en) | 2019-01-18 |
| CN109246560B true CN109246560B (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810919595.9A Active CN109246560B (en) | 2018-08-13 | 2018-08-13 | Sound producing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109246560B (en) |
| WO (1) | WO2020034727A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246560B (en) * | 2018-08-13 | 2020-05-22 | 歌尔股份有限公司 | Sound producing device |
| CN109905827B (en) * | 2019-03-21 | 2021-01-29 | 维沃移动通信有限公司 | Vibration sound production device and mobile terminal |
| CN111065021B (en) * | 2019-12-06 | 2021-09-10 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN215187186U (en) * | 2021-03-01 | 2021-12-14 | 华为技术有限公司 | Loudspeaker and electronic equipment |
| CN117631367A (en) * | 2022-03-21 | 2024-03-01 | 海信视像科技股份有限公司 | Display apparatus |
| CN218920606U (en) * | 2022-09-30 | 2023-04-25 | 瑞声光电科技(常州)有限公司 | Sounding device |
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| JP2003153377A (en) * | 2001-11-14 | 2003-05-23 | Sony Corp | Speaker |
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| JP4434830B2 (en) * | 2004-05-18 | 2010-03-17 | パイオニア株式会社 | Domed diaphragm |
| CN101656906B (en) * | 2008-08-20 | 2013-01-23 | 财团法人工业技术研究院 | Speaker monomer structure |
| WO2017045261A1 (en) * | 2015-09-15 | 2017-03-23 | 歌尔声学股份有限公司 | Receiver |
| CN205213033U (en) * | 2015-11-04 | 2016-05-04 | 瑞声光电科技(常州)有限公司 | Long stroke speaker |
| CN105516870A (en) * | 2016-02-29 | 2016-04-20 | 歌尔声学股份有限公司 | Loudspeaker module |
| CN208445735U (en) * | 2018-08-13 | 2019-01-29 | 歌尔股份有限公司 | Terminal installation |
| CN109218938B (en) * | 2018-08-13 | 2023-11-14 | 歌尔股份有限公司 | terminal device |
| CN109246560B (en) * | 2018-08-13 | 2020-05-22 | 歌尔股份有限公司 | Sound producing device |
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- 2018-08-13 CN CN201810919595.9A patent/CN109246560B/en active Active
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2019
- 2019-05-31 WO PCT/CN2019/089450 patent/WO2020034727A1/en active Application Filing
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| JP2003153377A (en) * | 2001-11-14 | 2003-05-23 | Sony Corp | Speaker |
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| CN103873993A (en) * | 2012-12-10 | 2014-06-18 | 仁宝电脑工业股份有限公司 | Electronic device |
| CN203984830U (en) * | 2014-07-08 | 2014-12-03 | 联想(北京)有限公司 | Electronic equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109246560A (en) | 2019-01-18 |
| WO2020034727A1 (en) | 2020-02-20 |
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