CN111698615A

CN111698615A - Double-sided miniature sound production device and electronic product

Info

Publication number: CN111698615A
Application number: CN201910194929.5A
Authority: CN
Inventors: 王兴龙; 马学敏; 葛连山
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2020-09-22
Also published as: WO2020181890A1

Abstract

The invention relates to a double-sided miniature sound production device and an electronic product. This miniature sound generating mechanism of two-sided includes: the first vibration assembly comprises a first vibration diaphragm, a first voice coil and a first centering support sheet, wherein the first vibration diaphragm is provided with a first folding ring, the first centering support sheet is provided with a first cantilever, and the first centering support sheet is connected to one side surface of the first vibration diaphragm; the second vibration assembly comprises a second vibration diaphragm, a second voice coil and a second centering branch sheet, wherein the second vibration diaphragm is provided with a second corrugated ring, the second centering branch sheet is provided with a second cantilever, and the second centering branch sheet is connected to one side surface of the second vibration diaphragm; a magnetic circuit system; first vibration subassembly and second vibration subassembly set up respectively in magnetic circuit's upper and lower both sides, and first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil all stretch into in the magnetic gap.

Description

Double-sided miniature sound production device and electronic product

Technical Field

The invention belongs to the technical field of electroacoustic transduction, and particularly relates to a double-sided miniature sound production device.

Background

In recent years, consumer electronics have been rapidly developed, and electronic products such as smart phones, tablet computers, VR devices, and the like have been generally accepted by consumers and are widely used. Sound generating devices are important electroacoustic transducer components in consumer electronics, and are widely used as speakers, earphones, and the like. As the performance of electronic products improves, there is also a necessary trend regarding the improvement of the acoustic performance of sound emitting devices.

In the conventional sound generating device, performance is generally improved by increasing the vibration area and the working amplitude of the sound generating device. But the increase of the vibration area can lead to the increase of the product size and influence the application of the whole machine end. Further increases in operating amplitude can cause various quality problems.

On the other hand, with the development of acoustic technology, some high-demand acoustic effects cannot be achieved by the existing sound generating devices.

Disclosure of Invention

It is an object of the present invention to provide an improved two-sided miniature sound generating device.

According to an aspect of the present invention, there is provided a two-sided miniature sound generating apparatus comprising:

the first vibration assembly comprises a first vibration diaphragm, a first voice coil and a first centering support, wherein the first vibration diaphragm is provided with a first folding ring, the first centering support is provided with a first cantilever, and the first centering support is connected to one side surface of the first vibration diaphragm;

the second vibration assembly comprises a second vibrating diaphragm, a second voice coil and a second centering branch piece, wherein the second vibrating diaphragm is provided with a second corrugated ring, the second centering branch piece is provided with a second cantilever, and the second centering branch piece is connected to one side surface of the second vibrating diaphragm;

the magnetic circuit system comprises a central magnetic part and a side magnetic part, and a magnetic gap is formed between the central magnetic part and the side magnetic part;

the first vibration assembly and the second vibration assembly are respectively arranged on the upper side and the lower side of the magnetic circuit system, and the first voice coil and the second voice coil both extend into the magnetic gap.

Optionally, the first vibration assembly includes a first reinforcing member disposed on the first centering pad, the first reinforcing member being located in a central region of the first diaphragm;

the second vibration component comprises a second reinforcing piece, the second reinforcing piece is arranged on the second centering branch piece, and the second reinforcing piece is located in the central area of the second diaphragm.

Optionally, the middle regions of the first and second reinforcing members are provided with protrusions or recesses extending toward the magnetic circuit system.

Optionally, the first vibration assembly includes a first reverse-folded ring member, the first reverse-folded ring member is connected to a surface of the first centering support, the surface of the first centering support is far away from the first diaphragm, a bending direction of the first reverse-folded ring member is opposite to a bending direction of the first folded ring, and the first cantilever is enclosed between the first reverse-folded ring member and the first folded ring.

Optionally, the second vibration assembly includes a second reversely-folded ring member, the second reversely-folded ring member is connected to a surface of the second centering branch piece, the surface of the second centering branch piece is far away from the second diaphragm, a bending direction of the second reversely-folded ring member is opposite to a bending direction of the second folded ring, and the second cantilever is enclosed between the second reversely-folded ring member and the second folded ring.

Optionally, the magnetic gap, the first voice coil, and the second voice coil are rectangular in shape, and each of the first voice coil and the second voice coil has a pair of long sides and a pair of short sides;

the first centering support is provided with a first fixed area and a first floating area, the first voice coil is relatively fixed with the first floating area, the first cantilever is connected between the first fixed area and the first floating area, the shape of the first centering support is matched with that of the first voice coil, and at least two first cantilevers are arranged on the first centering support at the position corresponding to the long edge of the first voice coil;

the second centering branch piece has the second fixed area and the second zone of floating, the second voice coil loudspeaker voice coil with the second floats and distinguishes relatively fixed, the second cantilever is connected the second fixed area and the second float between the district, the second centering branch piece with the shape phase-match of second voice coil loudspeaker voice coil, the second centering branch piece disposes two at least second cantilevers in the long limit department that corresponds to the second voice coil loudspeaker voice coil.

Optionally, the first stiffener is configured with one or two first cantilevers at a short side corresponding to the first voice coil;

the second centering branch piece is provided with one or two second cantilevers at the position corresponding to the short side of the second voice coil.

Optionally, the central magnetic part is a central magnet, the edge magnetic parts are formed by edge magnetic conductive plates, and the edge magnetic parts are arranged on the peripheries of two symmetrical side walls of the central magnet at least.

Optionally, the central magnetic part is a central magnet, the side magnetic part comprises two paired bar-shaped side magnets, and the two bar-shaped side magnets are respectively arranged on the periphery of two symmetrical side walls of the central magnet.

Optionally, the edge magnetic part comprises four strip-shaped edge magnets, the four strip-shaped edge magnets are paired pairwise, and the two pairs of strip-shaped edge magnets are sequentially arranged around the central magnet in a surrounding manner.

Optionally, a through hole is formed in the central magnetic part, and the first vibration assembly and the second vibration assembly are communicated through the through hole.

The present invention also provides an electronic product, including:

a product body;

the double-sided miniature sound production device is arranged in the product main body and configured to produce sound through vibration of the first vibration assembly and the second vibration assembly.

One technical effect of the invention is that the vibration stability of the sound generating device can be improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic view of the overall structure of a double-sided miniature sound generating device provided by the present invention;

FIG. 2 is an exploded view of a double-sided miniature sound generator according to the present invention;

FIG. 3 is a schematic cross-sectional view of a double-sided miniature sound generating device provided by the present invention along the long axis;

FIG. 4 is a schematic cross-sectional view of the double-sided miniature sound generator of the present invention along a short axis;

FIG. 5 is an exploded view of a first vibratory assembly provided by the present invention;

FIG. 6 is a schematic view, partially in section, of another dual-sided sound generating device provided by the present invention, taken along the long axis;

FIG. 7 is a schematic structural view of a centering disk according to the present invention;

FIG. 8 is a schematic structural view of another centering disk provided by the present invention;

fig. 9 is a schematic cross-sectional view along a short axis of another double-sided miniature sound generator provided by the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The invention provides an improved double-sided miniature sound production device. As shown in fig. 1, the double-sided miniature sound generating device comprises two sets of vibration assemblies, and the two sets of vibration assemblies respectively transmit sound outwards from the upper side and the lower side of the sound generating device, so that the acoustic performance of the sound generated by the sound generating device is improved. The double-sided miniature sound production device is suitable for different electronic products and has a wider application range. The reliability risk of the electronic product can be reduced by adopting the characteristic of double-sided sound production.

The double-sided miniature sound production device comprises a first vibration component and a second vibration component.

The first vibration assembly includes a first diaphragm 11, a first voice coil 12, and a first bobbin 13, as shown in fig. 2 to 5. The first diaphragm 11 is provided with a first folding ring 111, and the folding ring is bent towards one side of the plane where the first diaphragm 11 is located. As shown in fig. 5, the first folding ring 111 has a ring-shaped structure, and a portion in the middle of the first folding ring 111, that is, a portion surrounded by the first folding ring 111 is capable of floating up and down with respect to a portion on the outer periphery of the first folding ring 111, thereby generating vibration. The first collar 111 is then used to provide the ability to elastically deform between the inner and outer regions of the first diaphragm 11. As shown in fig. 5, the first stiffener 13 has a first cantilever 132, a first fixed region 131 and a first floating region 133. As shown in fig. 3 and 4, the first stiffener 13 is disposed on one side surface of the first diaphragm 11. The first fixed region 131 corresponds to a peripheral region of the first diaphragm 11, and the first floating region 133 corresponds to a central region of the first diaphragm 11, i.e., a portion surrounded by the first edge 111. The first floating region 133 can float up and down and vibrate with respect to the first fixed region 131. As shown in fig. 3 and 4, the first folding ring 111 forms a part of a concave region due to the bending, and the first cantilever 132 corresponds to the position of the concave region of the first folding ring 111. The first voice coil 12 is disposed on a side of the first positioning support away from the first diaphragm 11. As shown in fig. 3 and 4, the first damper 13 is sandwiched between the first diaphragm 11 and the first voice coil 12.

The second vibration assembly includes a second diaphragm 21, a second voice coil 22, and a second centering support 23. Fig. 2-4 show the assembled position of the second vibration assembly. The second diaphragm 21 has similar structural features to the first diaphragm 11, the second voice coil 22 has similar structural features to the first voice coil 12, and the second damper 23 has similar structural features to the first damper 13.

The second diaphragm 21 has a second folded ring 211, and the second centering support has a second cantilever 232, a second fixed region 231, and a second floating region 233, and the second centering support is connected to a side surface of the second diaphragm 21. The second cantilever 232 corresponds to the position of the recessed region of the second hinge 211. The second suspension arm 232 is connected between the second fixed region 231 and the second floating region 233. The second voice coil 22 is located on a side of the second centering branch away from the second diaphragm 21.

The magnetic circuit system comprises a central magnetic part 31 and a side magnetic part 32, wherein the side magnetic part 32 is arranged at the periphery of the central magnetic part 31, and a magnetic gap is formed between the central magnetic part 31 and the side magnetic part 32. The present invention is not limited to the specific structure of the magnetic circuit system, and for example, a single magnetic circuit, a three magnetic circuit, a five magnetic circuit, etc. may be adopted.

The first vibration component and the second vibration component are respectively arranged at the upper side and the lower side of the magnetic circuit system, as shown in fig. 2-4. The first vibrating component and the second vibrating component share one magnetic circuit system. The first voice coil 12 and the second voice coil 22 respectively extend into the magnetic gap from the upper end and the lower end of the magnetic gap. The first folding ring 111 and the second folding ring 211 are respectively bent in opposite directions, for example, as shown in fig. 3, the first folding ring 111 is bent upward, and the second folding ring 211 is bent downward.

The centering support piece has the technical effect that the centering support piece can provide good stable vibration effect for the two voice coils and the vibrating diaphragm in the double-sided miniature sound production device. The adoption of the double-sided miniature sound generating device can meet the design trend of miniaturization and miniaturization of electronic products on the one hand. On the other hand, the performance requirement that the acoustic performance is gradually improved is met, and the two vibration assemblies can meet the performance requirements of loudness, complex sound effect and the like. Furthermore, the centering support piece is adopted in the double-sided miniature sound production device with a small structure size, so that the capabilities of the vibration assembly in resisting swing and polarization and resisting external vibration interference can be effectively improved. Therefore, the product can realize reliable intelligent co-discharge with maximized application effect, and the performance of the electronic product is optimized.

The traditional sound generating device can also cause the vibration phenomenon of the whole electronic product when in work, and the use effect of the whole electronic product is seriously influenced. The double-sided miniature sound production device provided by the invention has the advantages that the first vibration component and the second vibration component are reversely arranged on the upper side and the lower side of the sound production device, so that application conditions are provided for reverse vibration sound production. In practical application, the problem of overall vibration of electronic products can be effectively counteracted by adopting reverse vibration.

In the actual assembly and processing technology, the vibration component is connected by adopting the mode that the vibrating diaphragm, the centering disk and the end face of the voice coil are fixedly connected, the processing technology is simple, and the reliability is higher.

The materials of the first diaphragm and the second diaphragm can be thermoplastic elastomers. The thermoplastic elastomer can form a more stable fixed connection relationship with the centering branch sheet. Moreover, the vibrating diaphragm formed by the thermoplastic elastomer can better absorb the buffer action generated by the centering support sheet, thereby improving the vibration stability and balance of the vibrating assembly.

Optionally, the first vibration component further includes a first reinforcing member 14, the first reinforcing member 14 is disposed on the first stiffener 13, and the first reinforcing member 14 is located in a central region of the first diaphragm 11, as shown in fig. 2 to 5. Similarly, the second vibration module may also include a second reinforcing member 24, the second reinforcing member 24 being disposed on the second centering pad 23, the second reinforcing member 24 being located in a central region of the second diaphragm 21.

The first reinforcing member 14 and the second reinforcing member 24 may be formed by a forming process such as stamping, so as to form a protrusion, a

recess

141, 241, and the like in the central region of the first reinforcing member 14 and the second reinforcing member 24. This structure can further improve the structural strength of the reinforcement member, thereby reducing the possibility of polarization of the diaphragm.

The reinforcing member arranged on the diaphragm is used for improving the rigidity and the strength of the central area of the diaphragm, so that the central area of the diaphragm cannot be bent when the diaphragm vibrates under stress, and the possibility of polarization of the diaphragm is reduced, as shown in fig. 9.

Optionally, as shown in fig. 6, the first vibration assembly further comprises a first reverse-folded ring member 15. The first reverse-folded ring member 15 has a similar folding structure to the first folding ring 111 of the first diaphragm 11. The shape and size of the first reverse-folded ring member 15 are matched with those of the first folded ring 111. The first reverse-folded ring member 15 is connected to the surface of the first core support 13 away from the first diaphragm 11. The bending direction of the first reverse-folded ring member 15 is opposite to the bending direction of the first folded ring 111. The first cantilever of the first centring disk 13 is enclosed in the region between the first reverse-folded ring member 15 and the first fold ring 111, as shown in fig. 6.

The first inflection ring piece can further provide the polarization restraining, balancing and vibration stabilizing effects for the first voice coil. Through this kind of design, first inflection ring and first centering piece can coact and provide anti rocking, the ability of polarization for first voice coil loudspeaker voice coil.

Optionally, as shown in fig. 6, a second reverse-folded ring member 25 may also be included in the second vibration assembly. The second reverse-folded ring piece 25 is matched with the second folded ring 211 of the second diaphragm 21 in structure and shape. The second turned-back ring member 25 functions in the second oscillating assembly in the same way as the first turned-back ring member 15. The second reverse-folded ring member 25 is connected to the surface of the second centering branch piece away from the second diaphragm 21, the bending direction of the second reverse-folded ring member 25 is opposite to the bending direction of the second folded ring 211, and the second cantilever 232 is enclosed between the second reverse-folded ring member 25 and the second folded ring 211.

In the embodiment shown in fig. 6, the first voice coil 12 may not be directly connected to the first spider 13, and it may be connected to the first inflection ring 15. Accordingly, the second voice coil 22 may be connected to the second reverse-folded ring member 25. The invention does not limit the connection form of the voice coil and the centering disk.

Alternatively, as shown in fig. 1 and 2, the double-sided miniature sound production device may be rectangular in shape. The edge and corner positions of the voice coil and the folded ring part of the vibrating diaphragm can be provided with round angle structures. The first voice coil 12 and the second voice coil 22 may each have a pair of long sides and a pair of short sides.

Alternatively, the shape of the first damper matches the shape of the first voice coil 12, and each of the first damper and the first voice coil may have a rectangular structure with rounded corners. The first damper 13 is provided with at least two first cantilevers 132 at positions corresponding to long sides of the first voice coil 12. Since the first bobbin 13 has a longer distance at a position corresponding to the long side, providing the plurality of first cantilevers 132 enables the first bobbin to have more stable structural reliability, and also can provide a polarization suppressing effect for the first voice coil 12 better. In the embodiment shown in fig. 7, the first stiffener 13 is provided with two first cantilevers 132 at positions corresponding to the long sides. In the embodiment shown in fig. 8, the first stiffener 13 is provided with three first suspension arms 132 at positions corresponding to the long sides.

The shape and the number of the first cantilevers are not strictly limited, and different numbers of the first cantilevers can be arranged according to the requirements of practical application.

Optionally, similar to the first stiffener, a plurality of second cantilevers 232 may be disposed on the second stiffener 23. The second damper 23 is provided with at least two second cantilevers 232 at positions corresponding to the long sides of the second voice coil 22. The second centering branch piece 23 may have a structure as shown in fig. 7 and 8.

Alternatively, the first and

second yokes

13 and 23 may be provided with one or two cantilevers at positions corresponding to short sides of the voice coil. In the embodiment shown in fig. 7 and 8, the first damper 13 is provided with one first cantilever 132 at a position corresponding to the short side of the first voice coil 12. The polarization suppression effect can be ensured by arranging fewer cantilevers in a relatively short area of the centering disk.

Alternatively, as shown in fig. 8, the first cantilevers 132 on the first bobbin 13 corresponding to the long sides of the first voice coil 12 are parallel to each other, and the three first cantilevers 132 on the same side extend in a parallel manner, so that the first bobbin can exhibit more uniform mechanical properties, and is thus suitable for providing polarization-suppressing acting force to the first voice coil and the first diaphragm which are uniformly stressed.

Alternatively, as shown in fig. 7, the first cantilevers 132 on the first bobbin 13 at positions corresponding to the long sides of the first voice coil 12 may extend in opposite directions. In the embodiment shown in fig. 7, the first stiffener 13 has two first suspension arms 132 at the corresponding long sides, and two adjacent first suspension arms 132 extend in opposite directions, so that the first stiffener 13 provides a stronger balancing force in a certain area. The design can better provide balance acting force for the first diaphragm and the first voice coil with uneven local stress. In other embodiments, for example, in the case where three first cantilevers are provided corresponding to the long side, two adjacent first cantilevers may extend in opposite directions.

Alternatively, the second spider may also be arranged in the same manner as the second suspension corresponding to the second voice coil, similarly to the case of the first spider described above.

Optionally, the double-sided miniature sound generating device provided by the invention can adopt a single-magnet single-magnetic-circuit magnetic circuit system, and also can adopt a three-magnet and five-magnet multi-magnetic-circuit magnetic circuit system.

For example, the central magnetic portion 31 of the magnetic circuit system may be a central magnet, and the side magnetic portion 32 may be a side magnetic plate or a side wall bent on the frame. Such side magnetic portions 32 are disposed at least on the periphery of the two symmetrical side walls of the central magnet, so that magnetic gaps are formed on at least two sides of the central magnet, thereby driving the voice coil to vibrate. This embodiment has the advantage of saving space and the magnet components used.

For another example, the central magnetic part 31 may be a central magnet, and the side magnetic part 32 includes two paired bar-shaped side magnets, which are respectively disposed at the peripheries of two symmetrical sidewalls of the central magnet. In this way, it is also possible to form magnetic gaps on at least two sides of the central magnet and thus to drive the voice coil. This embodiment has the advantage of providing a stronger electromagnetic driving force for the voice coil, enhancing the vibration performance of the vibration assembly, while saving as much space as possible.

Further, for another example, the side magnetic part includes four strip side magnets, two of the four strip side magnets are paired, and two pairs of the strip side magnets are respectively disposed on the periphery of two pairs of symmetric side walls of the central magnet. That is, two pairs of the bar-shaped edge magnets are sequentially and alternately arranged around the central magnet. The embodiment has the advantages that the magnetic gaps formed between the magnets can be formed on the periphery of the central magnet, the stress uniformity of the voice coil and the diaphragm is obviously improved, and the vibration performance is improved.

Optionally, the central magnetic part 31 may be provided with a through hole 311, and the through hole 311 forms communication between the first diaphragm 11 of the first vibration assembly and the second diaphragm 21 of the second vibration assembly, as shown in fig. 9. The through hole 311 can improve the air flowing space inside the double-sided miniature sound generating device, and reduce the influence of air pressure and air flow on the diaphragm and the voice coil, thereby reducing the possibility of polarization.

Further, in embodiments where the vibration assembly includes a stiffener, the stiffener may have protrusions or depressions formed thereon, as described above. The through hole 311 may correspond to the position of the protrusion or the depression, as shown in fig. 9. The embodiment can better reduce the influence of airflow and air pressure.

The invention also provides an electronic product which comprises a product main body and the double-sided miniature sound production device. The dual-sided miniature sound generating device is disposed in the product body, the dual-sided miniature sound generating device being configured to generate sound through vibration of the first and second vibrating components.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A double-sided miniature sound generating device is characterized by comprising:

2. The dual sided miniature sound generation device of claim 1, wherein the first vibration assembly includes a first stiffening member disposed on the first diaphragm, the first stiffening member being located in a central region of the first diaphragm;

3. The double-sided miniature sound generating apparatus according to claim 2, wherein the middle regions of the first and second reinforcing members are provided with protrusions or recesses extending toward the magnetic circuit system.

4. The dual-sided miniature sound generating apparatus according to claim 1, wherein the first vibration element comprises a first reverse-folded ring member, the first reverse-folded ring member is connected to a surface of the first centering pad away from the first diaphragm, a bending direction of the first reverse-folded ring member is opposite to a bending direction of the first folded ring, and the first cantilever is enclosed between the first reverse-folded ring member and the first folded ring.

5. The dual-sided miniature sound generating device according to claim 1, wherein the second vibration element comprises a second reverse-folded ring member, the second reverse-folded ring member is connected to a surface of the second centering branch piece away from the second diaphragm, a bending direction of the second reverse-folded ring member is opposite to a bending direction of the second folded ring, and the second cantilever is enclosed between the second reverse-folded ring member and the second folded ring.

6. The dual sided miniature sound generating apparatus of claim 1, wherein said magnetic gap, first voice coil and second voice coil are rectangular in shape, said first voice coil and second voice coil each having a pair of long sides and a pair of short sides;

7. The dual sided miniature sound generating apparatus of claim 5, wherein said first spider is provided with one or two first cantilevers at positions corresponding to short sides of said first voice coil;

8. The miniature sound generating device of claim 1, wherein the central magnetic portion is a central magnet, the edge magnetic portions are made of edge magnetic plates, and the edge magnetic portions are disposed at least on the peripheries of two symmetrical sidewalls of the central magnet.

9. The miniature sound generating device of claim 1, wherein said central magnetic portion is a central magnet, and said magnetic edge portions comprise two paired bar-shaped edge magnets, said two bar-shaped edge magnets being disposed on the periphery of two symmetrical sidewalls of said central magnet, respectively.

10. The dual-sided miniature sound generating device according to claim 9, wherein said edge magnetic portion comprises four bar-shaped edge magnets, two pairs of said four bar-shaped edge magnets are paired, and two pairs of said bar-shaped edge magnets are sequentially disposed around said central magnet.

11. The miniature sound generating device of claim 1, wherein said central magnetic portion has a through hole, said through hole communicating said first vibrating assembly with said second vibrating assembly.

12. An electronic product, comprising:

a product body;

the dual-sided miniature sound generating device of claims 1-11, disposed in the product body, the dual-sided miniature sound generating device configured to generate sound through vibration of the first and second vibrating components.