WO2020034727A1 - Sound producing device - Google Patents

Abstract

Disclosed is a sound producing device, the sound producing device comprising a vibration system and a magnetic circuit system, wherein the vibration system comprises a vibrating diaphragm and the vibrating diaphragm has a first surface and a second surface facing away from the first surface; and the magnetic circuit system is located at one side of the second surface of the vibrating diaphragm. A position, in communication with a space at the side of the first surface, of the sound producing device is provided with a first sound emission hole, and a position, in communication with a space at the side of the second surface, of the sound producing device is provided with a second sound emission hole. A waterproof air-permeable member is arranged on the second sound emission hole. The technical solution of the present invention can realize a bidirectional sound producing function of a sound producing device.

Description

Sound device Technical field

The present invention relates to the technical field of speakers, and in particular, to a sound generating device.

Background technique

Terminal devices (such as: mobile phones, cordless phones, notebook computers, digital cameras, Bluetooth headsets, etc.) have already existed in people's daily lives. For the important component of the terminal device, the speaker, the diaphragm will radiate the sound wave energy in the forward and reverse directions during operation. Generally, the speaker only utilizes the sound wave energy radiated in the forward direction, but does not make good use of the sound wave energy radiated in the reverse direction. Therefore, the existing speakers generally can only realize the one-way sound function, which greatly restricts the application of the speakers.

Summary of the Invention

The main object of the present invention is to provide a sound emitting device, which aims to realize the two-way sound emitting function of the sound emitting device.

In order to achieve the above object, the sound generating device provided by the present invention includes a vibration system and a magnetic circuit system;

The vibration system includes a diaphragm having a first surface and a second surface opposite the first surface;

The magnetic circuit system is located on a second surface side of the diaphragm;

A first sounding hole is provided at a position where the sounding device is in communication with the space on the first surface side, and a second sounding hole is provided at a position where the sounding device is in communication with the space on the second surface side;

A waterproof and breathable piece is provided on the second sound hole.

Optionally, the sound generating device further includes:

A housing in which an accommodation cavity is formed, and the first sounding hole and the second sounding hole are opened on the cavity wall of the accommodation cavity; and

A sounder comprising the vibration system and a magnetic circuit system, the sounder is housed in the accommodation cavity, the sounder includes a front sound hole and a rear sound hole, and the front sound hole and the first sound hole The sound emitting hole is provided in communication, and the rear sound hole is provided in communication with the second sound hole.

Optionally, 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.

Optionally, an air guiding channel is formed between the surface of the sounder and the cavity wall of the accommodating cavity, and the air guiding channel communicates the rear sound hole and the second sound hole.

Optionally, the sound generator is fixedly connected to a cavity wall of the accommodating cavity that surrounds the first sound hole, and the front sound hole is opposite to the first sound hole.

Optionally, the cavity wall of the accommodating cavity is provided with spaced-apart yielding holes and the second sounding hole, and a side wall of the yielding hole is provided with a connecting piece, the strength of the connecting piece is higher than The strength of plastic, the connecting member is extended along the circumferential direction of the yielding hole, and the inside of the connecting member is formed as the first sounding hole;

The sound generator is fixedly connected to the connecting member, and the front sound hole is disposed opposite to the first sound hole.

Optionally, the shell includes a first shell and a second shell, the first shell covers the second shell, and encloses the second shell to form the receiving cavity. The first casing is provided with the first sounding hole, and the second casing is provided with the second sounding hole.

Optionally, the shell is a rectangular parallelepiped, and the first sounding hole and the second sounding hole are oppositely disposed.

Optionally, the first casing is glued or ultrasonically welded with the second casing.

Optionally, the sound generating device further includes a dustproof net, which is provided at the first sounding hole and blocks the first sounding hole.

Optionally, the dust-proof net is accommodated in the accommodating cavity, and the dust-proof net includes a net body and a first frame surrounding the outer edge of the net, and the first frame surrounds the first frame. A sounding hole is arranged and fixedly connected to the cavity wall of the accommodating cavity surrounding the first sounding hole, the mesh body covers the first sounding hole, and the sounder surrounds the front sounding hole The surface surrounds and is fixedly connected to the first frame.

Optionally, the waterproof and breathable member includes a waterproof and breathable layer and a second frame surrounding the outer edge of the waterproof and breathable layer, the second frame is arranged around the second sound hole, and the waterproof and breathable layer is capped The second sounding hole, the second frame is fixedly connected to a cavity wall of the accommodating cavity surrounding the second sounding hole, or is fixedly connected to an outer surface of the housing surrounding the second sounding hole ;

Alternatively, the waterproof and breathable member is a waterproof and breathable layer, and an outer edge of the waterproof and breathable layer is integrally injection-molded on a sidewall of the second sound hole.

Optionally, the sound emitting device further includes a waterproof tape, which is provided on a surface of the housing and is arranged around the first sound hole;

And / or, two opposite side walls of the first sounding hole are provided with reinforcing ribs.

Optionally, the sound generating device includes a ring-shaped 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, and the frame The first end is also provided with a front cover, the front cover is provided with the first sounding hole, the second end of the frame is provided with a rear cover, and the rear cover is provided with the Second sound hole.

According to the technical solution of the present invention, when the sound generating device operates, the diaphragm of the vibration system generates vibrations and radiates sound wave energy to 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 forward-radiated sound wave energy flows out through the first sounding hole on the sounding device, and the sound is radiated outward from the front of the sounding device; the reverse-radiated sound wave energy flows out through the second sounding hole in the sounding device, and The sound emitting device emits sound from the side or the opposite side. In this way, the two-way sound function of the sound device is realized, the utilization rate of the sound wave energy of the sound device is improved, and the application range of the sound device is widened. In addition, the sound generating device of the present invention has the advantages of simple structure, low process difficulty, and high reliability compared with most of the existing dual diaphragm speaker products on the market. The dual diaphragm design is adopted. The second diaphragm is In the case of a non-breathable material, the sound wave generated by the first diaphragm is transmitted to the second diaphragm to generate vibration and then make a sound. Since the second diaphragm emits sound through vibration, transmission loss occurs. Through its microporous propagation, transmission loss is unlikely to occur, and excellent sound emission characteristics in the second direction can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly explain 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 introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structure shown in these drawings without paying creative work.

1 is a schematic structural diagram of an embodiment of a sound generating device according to the present invention;

FIG. 2 is a schematic structural view of the sound generating device in FIG. 1 from another perspective; FIG.

3 is an exploded view of the sound generating device in FIG. 1;

4 is a schematic sectional view of the sound generating device in FIG. 1;

5 is a schematic structural diagram of another embodiment of a sound generating device according to the present invention;

6 is a schematic structural diagram of another embodiment of a sound generating device according to the present invention;

7 is a schematic structural diagram of another embodiment of a sound generating device according to the present invention;

FIG. 8 is a schematic structural diagram of a sound generating device applied to a terminal device according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Label	name	Label		name
100	Sound device	33	First border
10	shell	40	Waterproof and breathable parts
10a		Air channel	41	Waterproof and breathable layer
11	First shell	43	Second border
111	First sound hole	50	Waterproof tape
1111	Stiffener	60a		frame
113	Shell body	60b	Front cover

115	Connector	60c	Rear cover
13	Second shell	70	Vibration system
131	Second sound hole	80	Magnetic circuit system
20	Sounder	200	Protective shell
20a	Front sound hole	210	First terminal sound hole
30	Air filter	230	Second terminal sound hole
31	Mesh body	300	Terminal device

The realization of the purpose, functional characteristics and advantages of the present invention will be further explained with reference to the embodiments and the drawings.

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between components in a specific posture (as shown in the drawings). The relative positional relationship, movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, descriptions such as “first”, “second”, and the like in the present invention are for descriptive purposes only, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise.

In the present invention, the terms “connected”, “fixed” and the like shall be understood in a broad sense unless otherwise specified and defined, for example, “fixed” may be a fixed connection, may be a detachable connection, or be integrated into one; It is a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements, unless it is clearly defined otherwise. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions conflicts or cannot be achieved, such a combination of technical solutions should be considered It does not exist and is not within the scope of protection claimed by the present invention.

The present invention provides a sound emitting device 100, which aims to realize the two-way sound emitting function of the sound emitting 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, the diaphragm having a first surface and a second surface opposite to the first surface;

The magnetic circuit system 80 is located on the second surface side of the diaphragm;

The sound emitting device 100 is provided with a first sound hole 111 at a position communicating with the space on the first surface side, and the sound emitting device 100 is provided with a second sound hole 131 at a position communicating with the space on the second surface side;

The second sound emitting hole 131 is provided with a waterproof and air-permeable member 40.

When the sound generating device 100 is in operation, the diaphragm of the vibration system 70 generates vibrations to radiate sound wave 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 forward-radiated sound wave energy flows out through the first sound-emitting hole 111 on the sound-emitting device 100, and the sound is radiated outward from the front of the sound-emitting device 100; the reverse-radiated sound-wave energy passes through the second sound-emitting hole 100 131 flows out and radiates sound from the side or the opposite side of the sound emitting device 100. In this way, the two-way sound emitting function of the sound emitting device 100 is realized, the utilization rate of the sound wave energy of the sound emitting device 100 is improved, and the application range of the sound emitting device 100 is widened. In addition, the sound generating device 100 of the present invention has the advantages of simple structure, low process difficulty, and high reliability compared with most of the existing dual-diaphragm speaker products on the market. It adopts a dual-diaphragm design and a second diaphragm. In the case of a non-breathable material, the sound waves generated by the first diaphragm are transmitted to the second diaphragm to generate vibration and then make a sound. Since the second diaphragm emits sound through vibration, transmission loss occurs. The present invention uses a waterproof and breathable member 40 The sound propagates through its micropores, which is unlikely to cause transmission loss, and can achieve excellent sound emission characteristics in the second direction.

The specific structure of the sound generating device 100 of the present invention will be described below.

As shown in FIG. 1 to FIG. 4, in an embodiment of the sound generating device 100 of the present invention, the sound generating device 100 further includes:

A housing 10 in which an accommodation cavity (not labeled) is formed, and the first sounding hole 111 and the second sounding hole 131 are opened on the cavity wall of the accommodation cavity; and

A sounder 20 including the vibration system and the magnetic circuit system, the sounder 20 is housed in the accommodating cavity, and the sounder 20 includes a front sound hole 20a and a rear sound hole (not labeled). The front sound hole 20a is provided in communication with the first sound hole 111, and the rear sound hole is provided in communication with the second sound hole 131.

Specifically, the front sound hole 20a is provided on a top surface of the sounder 20, and the rear sound hole is provided on a bottom surface or a side surface of the sounder 20. In this way, the forward sound wave and the reverse sound wave of the diaphragm can be effectively prevented from interfering with each other, so that the two-way sound quality of the sound emitting 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 communicates the rear sound hole and the second sound hole 131. In this way, not only the rear sound hole and the second sound hole 131 can be communicated, so that the two-way sound function of the sound device 100 is more easily realized, but also the structure is simple, the processing is convenient, and the assembly is convenient.

In this embodiment, the casing 10 is substantially rectangular parallelepiped, and the receiving cavity therein is also generally rectangular parallelepiped. The top wall and the bottom wall of the receiving cavity are respectively provided with a first sounding hole 111 and a second sounding hole 131. The sound generator 20 also has a substantially rectangular parallelepiped shape, and its size is smaller than the size of the accommodation cavity, so that the sound generator 20 can be accommodated in the accommodation cavity.

It can be understood that the front cover of the sounder 20 is provided with a front sound hole 20a for emitting sound waves, and the plastic housing of the sounder 20 is provided with a rear sound hole for balancing the internal pressure of the sounder 20 (of course, in some other implementations) In the example, a rear sound hole for balancing the air pressure inside the sounder 20 can also be provided on the magnetic circuit system). When the sound generator 20 is contained in the accommodation cavity, the sound generator 20 can be directly connected to the cavity wall of the accommodation cavity through a snap connection, a screw connection, a screw connection, a glue connection, or other reasonable and effective connection methods. In order to achieve fixing, it can also be indirectly connected to the cavity wall of the accommodating cavity through an intermediate piece (such as a bracket) to achieve fixing. At this time, the front sound hole 20a of the sounder 20 is provided facing the first sound hole 111 and communicates with the first sound hole 111. The specific connection method may be achieved through a pipe such as a duct, or the outer surface of the front cover (of the sound generator 20) surrounding the front sound hole 20a may be closely adhered to the first sound hole 111 surrounding the accommodation cavity. Wall of the cavity so that the front sound hole 20a of the sounder 20 is directly connected with the first sound hole 111. At the same time, since the size of the sounder 20 is smaller than the size of the accommodation cavity, there can be a certain distance between the surface of the sounder 20 and the cavity wall of the accommodation cavity to form an air guide channel 10a, so that the air guide channel 10a is used Connect the rear sound hole of the sounder 20 with the second sound hole 131 (Of course, in some other embodiments, the rear sound hole may be opened on the bottom surface of the sounder 20. At this time, the surface of the sounder 20 and the receiving cavity There is no distance between the cavity walls).

In this way, when the sound emitting device 100 is operating, the diaphragm of the sounder 20 vibrates to the forward direction (the side of the diaphragm facing the first sound hole 111) and the reverse direction (a side of the diaphragm facing away from the first sound hole 111). Side) radiates sound wave energy. At this time, the forward-radiated sound wave energy flows out through the front sound hole 20a on the sounder 20 and through the first sound hole 111 on the housing 10 of the sound device 100, and radiates sound outward from the front of the sound device 100; The radiated sound wave energy flows into the air-conducting channel 10a in the casing 10 of the sounding device 100 through the rear sound hole in the sounder 20, and then flows out through the second sounding hole 131 in the casing 10 of the sounding device 100. The sound is emitted from the side or the opposite side. In this way, the two-way sound emitting function of the sound emitting device 100 is realized, the utilization rate of the sound wave energy of the sound emitting device 100 is improved, and the application range of the sound emitting device 100 is widened. In addition, the sound generating device 100 of the present invention has the advantages of simple structure, low process difficulty, and high reliability compared with most of the existing dual-diaphragm speaker products on the market. It adopts a dual-diaphragm design and a second diaphragm. In the case of a non-breathable material, the sound waves generated by the first diaphragm are transmitted to the second diaphragm to generate vibration and then make a sound. Since the second diaphragm emits sound through vibration, transmission loss occurs. The sound propagates through its micropores, which is unlikely to cause transmission loss, and can achieve excellent sound emission characteristics in the second direction.

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 hole 111, and the front sound hole 20a and the first sound The holes 111 are oppositely disposed.

That is, the surface of the sounder 20 surrounding the front sound hole 20a is provided around the first sound hole 111 and is fixedly connected to the cavity wall of the accommodating cavity that surrounds the first sound hole 111.

That is, the outer surface of the front cover (of the sound generator 20) that surrounds the front sound hole 20a surrounds the first sound hole 111 and is fixedly connected to the cavity wall of the accommodation cavity that surrounds the first sound hole 111. Specifically, the front cover and the cavity wall can be directly fixedly connected by adhesive bonding, snap-on connection, screw connection, or other reasonable and effective methods, or through middleware (such as a seal ring, an air guide ring, a frame, and a bracket). Etc.) and indirectly fixed the connection by glue connection, snap connection, screw connection, or other reasonable and effective methods.

In this way, the position of the front sound hole 20a and the position of the first sound hole 111 can be made close, so that the front sound hole 20a can face the first sound hole 111, so that the forward-radiated sound wave energy of the sounder 20 can smoothly pass through the first sound hole 20a. A sound hole 111 sounds outward. Moreover, the structure is simple, the manufacturing is convenient, the assembly is fast, and the stability and reliability are high.

As shown in FIG. 1 to FIG. 4, in an embodiment of the sounding device 100 of the present invention, the cavity wall of the accommodating cavity is provided with spaced-apart yield holes and the second sounding hole 131. A connecting member 115 is convexly protruded on a side wall of the connecting member 115. The connecting member 115 has a strength higher than that of plastic. The connecting member 115 is extended along the circumferential direction of the yielding hole. Mentioned first sound hole 111;

The sound generator 20 is fixedly connected to the connecting member 115, and the front sound hole 20 a is opposite to the first sound hole 111.

In this embodiment, the top wall of the accommodation cavity inside the housing 10 is provided with a yield hole, and the bottom wall of the accommodation cavity inside the housing 10 is provided with a second sounding hole 131. A mounting groove is provided on a side wall of the positioning hole, and the mounting groove is extended along the circumferential direction of the positioning hole and communicates end to end to form a circular mounting groove. At this time, the connecting piece 115 is arranged in a ring shape and has an outer edge and an inner edge. The connecting piece 115 is arranged around the yield hole, and the outer edge of the connecting piece 115 is inserted and held in the installation groove. The inner edge of the connecting piece 115 It is enclosed to form a first sound hole 111. It should be noted that the structure in which the outer edge of the connecting member 115 is inserted and clamped in the installation groove can be obtained by integral 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 connected to the lower surface of the connecting member 115 surrounding the first sound hole 111. Specifically, the front cover and the connecting member 115 may be directly fixedly connected by glue, snap connection, screw connection, or other reasonable and effective methods, or may be connected by middleware (such as a seal ring, an air guide ring, a frame, Brackets, etc.) and indirectly fixed connection by glue, snap connection, screw connection, or other reasonable and effective methods.

In addition, the connecting member 115 may be generally made of a rigid material, such as a steel plate or a ceramic plate, so that its strength is higher than that of plastic.

In this way, not only can the thickness of the sidewall of the first sounding hole 111 be reduced, the volume of the sounding device 100 can be effectively reduced, but also the installation stability of the sounding device 20 can be effectively improved, the structural stability of the sounding device 100 can be improved, and the sounding of the sounding device 100 can be improved. quality.

As shown in FIG. 1 to FIG. 4, in an embodiment of the sound generating device 100 of the present invention, the casing 10 includes a first casing 11 and a second casing 13, and the first casing 11 covers the first casing 11. Two housings 13 are enclosed with the second housing 13 to form the containing cavity. The first housing 11 is provided with the first sounding hole 111, and the second housing 13 is opened. Mentioned second sound hole 131.

In this way, the first casing 11 or the second casing 13 can be opened or closed, so that the accommodation cavity inside the casing 10 can be exposed or hidden, thereby facilitating the arrangement, arrangement, and connection and fixing of the components therein. In this way, the production efficiency and reliability of the sound generating device 100 can be greatly improved.

Further, the casing 10 is a rectangular parallelepiped, and the first sounding hole 111 and the second sounding hole 131 are oppositely disposed. In this way, not only can the structure of the sound generating device 100 be simpler, processing is more convenient, and assembly is faster, but also the two-way sound of the sound generating device 100 can be made smoother.

Specifically, the first shell 11 and the second shell 13 may be covered by gluing, ultrasonic welding, or other reasonable and effective methods.

In addition, it should be noted that, as shown in FIG. 3 and FIG. 4, in this embodiment, the first casing 11 includes a casing body 113 and a connecting member 115, and the casing body 113 covers the second casing 13 and connects with the first casing 13. The two shells 13 surround and form the containing cavity. At this time, the inner surface of the shell body 113 at the top is provided with a yielding hole penetrating through the shell body 113, and the side wall of the yielding hole is provided with a mounting groove, and the mounting groove is extended along the circumferential direction of the yielding hole and ends. Communicate to form an annular mounting groove. At this time, the connecting piece 115 is arranged in a ring shape and has an outer edge and an inner edge. The connecting piece 115 is arranged around the yield hole, and the outer edge of the connecting piece 115 is inserted and held in the installation groove. The inner edge of the connecting piece 115 It is enclosed to form a first sound hole 111.

As shown in FIG. 1 to FIG. 4, in an embodiment of the sound generating device 100 of the present invention, the sound generating device 100 further includes a dustproof net 30, and the dustproof net 30 is disposed at the first sounding hole 111, and Blocking the first sound hole 111.

It should be noted that the dustproof net 30 may be disposed on the outer surface of the casing 10. Specifically, the outer edge of the dustproof net 30 is disposed around the first sounding hole 111 and is fixedly connected to the outer surface of the housing 10 surrounding the first sounding hole 111. At this time, the middle portion of the dustproof net 30 covers the first from the outside. The sound emission hole 111 is used for protecting the dust and adjusting the acoustic performance of the first sound emission hole 111. In addition, the fixed connection between the outer edge of the dust net 30 and the outer surface of the casing 10 can be directly achieved by means of glue bonding, or by middleware such as a frame or a seal ring, and by means of glue bonding or other reasonable and effective methods. Indirectly.

Similarly, the dustproof net 30 can also be disposed on the inner surface of the casing 10, that is, on the cavity wall of the accommodation cavity. Specifically, the outer edge of the dustproof net 30 is disposed around the first sound emitting hole 111 and is fixedly connected to the cavity wall surrounding the first sound emitting hole 111 of the accommodating cavity (ie, the first sound emitting hole 111 is fixedly connected to the housing 10). Inner surface), at this time, the middle part of the dustproof net 30 covers the first sounding hole 111 from the inside, so as to protect the dust and adjust the acoustic performance of the first sounding hole 111. In addition, the fixed connection between the outer edge of the dustproof net 30 and the cavity wall of the accommodating cavity can be directly achieved by means of glue bonding, or by using middle parts such as a frame, a seal ring, and the like or other reasonable and effective means. Way to achieve indirectly.

In addition, the dustproof net 30 may also be disposed in the first sound emitting hole 111. Specifically, the outer edge of the dustproof net 30 is disposed around the first sounding hole 111 and is fixedly connected to the side wall of the first sounding hole 111. At this time, the middle portion of the dustproof net 30 blocks the first sounding hole 111 from the first sounding hole 111. A sounding hole 111 is provided to protect the dust and adjust the acoustic performance of the first sounding hole 111. In addition, the fixed connection between the outer edge of the dustproof net 30 and the side wall of the first sounding hole 111 can be directly implemented by integral injection molding (as shown in FIG. 5).

In addition, the dustproof net 30 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 FIG. 4, in an embodiment of the sound generating device 100 of the present invention, the dust-proof net 30 is accommodated in the accommodating cavity, and the dust-proof net 30 includes a mesh body 31 and is surrounded by the mesh body 31. A first frame 33 on the outer edge of the mesh body 31 is disposed around the first sound hole 111 and is fixedly connected to a cavity wall of the accommodation cavity surrounding the first sound hole 111 The mesh body 31 covers the first sound hole 111, and a surface of the sound generator 20 surrounding the front sound hole 20a surrounds and is fixedly connected to the first frame 33.

Specifically, the first frame 33 is a waterproof gasket, and further may be a waterproof foam. The first frame 33 is bonded or injection-molded to the edge of the mesh body 31, and then the side of the first frame 33 and the edge of the mesh body 31 and the receiving cavity. The cavity wall is adhered and fixed, and the other surface is adhered and fixed to the surface of the sounder 20. After the elastic waterproof foam is squeezed, a better waterproof sealing effect between the sounder 20 and the casing 10 can be achieved.

Such a setting not only has a simple structure, convenient manufacturing, fast assembly, high stability and reliability, but also the dustproof net 30 is located in the containing cavity, which is not easily damaged and has good durability.

In addition, the mesh body 31 in this embodiment may be a conventional dustproof mesh cloth or a dustproof mesh cloth with a waterproof function.

As shown in FIG. 1 to FIG. 4, in an embodiment of the sound generating device 100 of the present invention, the sound generating device 100 further includes a waterproof and breathable member 40, and the waterproof and breathable member 40 is disposed at the second sound hole 131, and Blocking the second sound hole 131.

It should be noted that the waterproof and air-permeable member 40 may be disposed on the outer surface of the casing 10. Specifically, the outer edge of the waterproof and breathable member 40 is provided around the second sound hole 131 and is fixedly connected to the outer surface of the casing 10 surrounding the second sound hole 131. At this time, the middle portion of the waterproof and breathable member 40 covers the second from the outside. The sound hole 131 is used for waterproofing and ventilating and adjusting the acoustic performance of the second sound hole 131. In addition, the fixed connection between the outer edge of the waterproof and breathable member 40 and the outer surface of the casing 10 can be directly achieved by means of glue bonding, or by middleware such as a frame or a seal ring, and by means of glue bonding or other reasonable and effective methods. Indirectly.

Similarly, the waterproof and air-permeable member 40 can also be disposed on the inner surface of the casing 10, that is, disposed on the cavity wall of the accommodation cavity. Specifically, the outer edge of the waterproof and breathable member 40 is disposed around the second sound emitting hole 131 and is fixedly connected to the cavity wall surrounding the second sound emitting hole 131 of the accommodating cavity (ie, the second sound emitting hole 131 is fixedly connected to the housing 10). Inner surface), at this time, the middle portion of the waterproof and breathable member 40 covers the second sound hole 131 from the inside to play a role of waterproofing and ventilating and adjusting the acoustic performance of the second sound hole 131. In addition, the fixed connection between the outer edge of the waterproof and breathable member 40 and the cavity wall of the accommodating cavity can be achieved directly by means of glue bonding, or by using middle members such as a frame, a seal ring, and the like, or by using other suitable and effective Way to achieve indirectly.

In addition, the waterproof and breathable member 40 may also be disposed in the second sound emitting hole 131. Specifically, the outer edge of the waterproof and breathable member 40 is disposed around the second sounding hole 131 and is fixedly connected to the side wall of the second sounding hole 131. At this time, the middle portion of the waterproof and breathable member 40 blocks the first sounding hole 131 from the second sounding hole 131. The two sounding holes 131 are used for waterproofing and ventilating and adjusting the acoustic performance of the second sounding holes 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 hole 131 can be directly implemented by integral injection molding (as shown in FIG. 5).

In addition, in the waterproof and breathable member 40 in this embodiment, either a waterproof breathable layer 41 may be directly selected, or a structure in which the waterproof breathable layer 41 is used and a frame is mounted on the outer edge thereof. The waterproof breathable layer 41 may be a single-layer structure including only one waterproof breathable film, or a multilayer composite structure including at least a waterproof breathable film and a mesh fabric. 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 film. The mesh can be a PP 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 installation stability of the waterproof breathable member 40, the waterproof breathable member 40 includes a waterproof breathable layer 41 and a second surrounding the outer edge of the waterproof breathable layer 41. A frame 43, the second frame 43 is disposed around the second sound hole 131, the waterproof and breathable layer 41 covers the second sound hole 131, and the second frame 43 is fixedly connected to the receiving cavity The cavity wall surrounding the second sounding hole 131 is fixedly connected to the outer surface of the casing 10 surrounding the second sounding hole 131. Specifically, the second frame 43 is a waterproof gasket, and further may 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 edge of the second frame 43 and the waterproof and breathable layer 41 may be glued. It is fixedly connected to the cavity wall of the accommodating cavity surrounding the second sounding hole 131, or fixedly connected to the outer surface of the housing 10 surrounding the second sounding hole 131.

As shown in FIG. 1 to FIG. 4, in an embodiment of the sound generating device 100 of the present invention, the second frame 43 is fixedly connected to the outer surface of the casing 10 surrounding the second sound hole 131. Such an arrangement is not only simple in structure but also convenient to manufacture , Fast assembly, high stability and reliability.

As shown in FIG. 1 to FIG. 4, in an embodiment of the sound emitting device 100 of the present invention, in order to improve the sealability of the product applying the sound emitting device 100 of the present invention around the first sound hole 111, the sound emitting device 100 further includes a waterproof tape. 50. The waterproof tape 50 is disposed on the surface of the casing 10 and is disposed around the first sound hole 111.

As shown in FIG. 6, in an embodiment of the sound-emitting device 100 of the present invention, two opposite sidewalls of the first sound-emitting hole 111 are provided with reinforcing ribs 1111. In this way, the middle portion of the dust-proof net 30 can be fixedly connected to the reinforcing rib 1111, so that the installation stability thereof is enhanced, and the dust-proof net 30 is prevented from being affected by airflow and vibrating.

As shown in FIG. 7, in an embodiment of the sound generating device 100 of the present invention, the sound generating device 100 includes a ring-shaped frame 60 a, the vibration system 70 is installed at a first end of the frame 60 a, and the magnetic circuit system 80 It is installed in the frame 60a and is located below the vibration system 70. The first end of the frame 60a is further provided with a front cover 60b, and the front cover 60b is provided with the first sounding hole 111. A rear cover 60c is provided on the second end of the frame 60a, and the second sound hole 131 is provided on the rear cover 60c.

In addition, in this embodiment, the sound generating device 100 further includes a dustproof net 30 and a waterproof and breathable member 40, and the waterproof and breathable member 40 is disposed at the second sound hole 131 and blocks the second sound hole 131. The dustproof net 30 is provided at the first sounding hole 111, and blocks the first sounding hole 111.

In addition, it should be noted that the shape of the casing 10 can be set according to actual conditions, such as a rectangular parallelepiped, a rectangular parallelepiped, a cylindrical, or other special shapes.

The shape of the first sounding hole 111 and the shape of the second sounding hole 131 can also be set according to the actual situation, for example, they can be set to be circular, rectangular, square, or other special shapes.

As shown in FIG. 8, the present invention also proposes a terminal device 300. The terminal device 300 includes a protective case 200 and the aforementioned sound emitting device 100 installed in the protective case 200. The specific structure of the sound emitting device 100 Reference is made to the foregoing embodiments. Since the terminal device 300 adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the technical solutions of all the foregoing embodiments, and will not be described in detail here. The protective shell 200 is provided with a first terminal sound hole 210 communicating with the first sounding hole 111 and a second terminal sound hole 230 communicating with the second sounding hole 131.

Specifically, the protective shell 200 has oppositely disposed front and rear sides and sides connecting the front and reverse sides. The first terminal sound hole 210 is provided on the front of the protective case 200, and the second terminal sound hole 230 is provided. On the opposite side of the protective case 200 (as shown in FIG. 8); or

The first terminal sound hole 210 is provided on the side of the protective case 200, and the second terminal sound hole 230 is provided on the opposite side (not shown) of the protective case 200; or,

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 a 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, an MP3, an MP4, or another terminal device 300.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation or direct / indirect use of the description and drawings of the present invention under the inventive concept of the present invention All other related technical fields are included in the patent protection scope of the present invention.

Claims (14)

1. A sound generating device includes a vibration system and a magnetic circuit system;

   The vibration system includes a diaphragm having a first surface and a second surface opposite the first surface;

   The magnetic circuit system is located on the second surface side of the diaphragm; it is characterized by:

   A first sounding hole is provided at a position where the sounding device is in communication with the space on the first surface side, and a second sounding hole is provided at a position where the sounding device is in communication with the space on the second surface side;

   A waterproof and breathable piece is provided on the second sound hole.
2. The sound generating device according to claim 1, wherein the sound generating device further comprises:

   A housing in which an accommodation cavity is formed, and the first sounding hole and the second sounding hole are opened on the cavity wall of the accommodation cavity; and

   A sounder comprising the vibration system and a magnetic circuit system, the sounder is housed in the accommodation cavity, the sounder includes a front sound hole and a rear sound hole, and the front sound hole and the first sound hole The sound emitting hole is provided in communication, and the rear sound hole is provided in communication with the second sound hole.
3. The sound emitting device according to claim 2, 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.
4. The sound generating device according to claim 2, wherein an air guide channel is formed between the surface of the sound generator and the cavity wall of the accommodating cavity, and the air guide channel communicates the rear sound hole and the Said second sound hole.
5. The sound emitting device according to claim 2, wherein the sound generator is fixedly connected to a cavity wall of the accommodating cavity surrounding the first sound hole, and the front sound hole and the first sound The holes are oppositely arranged.
6. The sound generating device according to claim 2, wherein the cavity wall of the accommodating cavity is provided with a spaced-apart yield hole and the second sound hole, and a side wall of the yield hole is provided with a convex connection. The strength of the connecting member is higher than that of plastic, the connecting member is extended along the circumferential direction of the yielding hole, and the inside of the connecting member is formed as the first sounding hole;

   The sound generator is fixedly connected to the connecting member, and the front sound hole is disposed opposite to the first sound hole.
7. The sound generating device according to claim 2, wherein the casing comprises a first casing and a second casing, and the first casing covers the second casing and is in contact with the second casing. A housing is enclosed to form the containing cavity, the first housing is provided with the first sounding hole, and the second housing is provided with the second sounding hole.
8. The sound emitting device according to claim 7, wherein the casing is a rectangular parallelepiped, and the first sound hole and the second sound hole are oppositely disposed.
9. The sound generating device according to claim 7, wherein the first casing is glued or ultrasonically welded with the second casing.
10. The sound emitting device according to any one of claims 2 to 9, wherein the sound emitting device further comprises a dustproof net, the dustproof net is provided at the first sounding hole, and blocks the sounding net First sound hole.
11. The sound generating device according to claim 10, wherein the dust-proof net is accommodated in the accommodating cavity, and the dust-proof net includes a net body and a first frame surrounding the outer edge of the net. The first frame is arranged around the first sound hole, and is fixedly connected to the cavity wall of the accommodation cavity surrounding the first sound hole, and the mesh body covers the first sound hole, so The surface of the sound generator surrounding the front sound hole surrounds and is fixedly connected to the first frame.
12. The sound generating device according to any one of claims 1 to 9, wherein the waterproof and breathable member comprises a waterproof and breathable layer and a second frame surrounding the outer edge of the waterproof and breathable layer, and the second frame surrounds The second sounding hole is provided, the waterproof and breathable layer covers the second sounding hole, and the second frame is fixedly connected to the cavity wall of the accommodating cavity surrounding the second sounding hole, or fixedly connected. An outer surface of the casing surrounding the second sound hole;

    Alternatively, the waterproof and breathable member is a waterproof and breathable layer, and an outer edge of the waterproof and breathable layer is integrally injection-molded on a sidewall of the second sound hole.
13. The sound emitting device according to any one of claims 2 to 9, wherein the sound emitting device further comprises a waterproof tape, the waterproof tape is provided on a surface of the casing, and is arranged around the first sound hole ;

    And / or, two opposite side walls of the first sounding hole are provided with reinforcing ribs.
14. The sound generating device according to claim 1, wherein the sound generating device comprises a ring-shaped frame, the vibration system is installed at a first end of the frame, and the magnetic circuit system is installed in the frame and located at Below the vibration system, a first cover is also provided on the first end of the frame, the first sounding hole is provided on the front cover, and a rear cover is provided on the second end of the frame. The rear cover is provided with the second sounding hole.

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