CN217825347U - Sound production device and electronic equipment - Google Patents

Abstract

The utility model belongs to the technical field of sound generating equipment, in particular to a sound generating device and electronic equipment, wherein the sound generating device comprises a shell and a double-sided sound generating unit, and the shell is provided with an inner cavity, and a first sound outlet, a second sound outlet, a third sound outlet and a fourth sound outlet which are communicated with the inner cavity; a first vibrating diaphragm and a second vibrating diaphragm which can adjust the vibration direction are respectively arranged on two opposite sides of the double-sided sounding unit; the double-sided sounding unit is arranged in the inner cavity of the shell and divides the inner cavity into a first acoustic cavity and a second acoustic cavity which are isolated from each other, and the first vibrating diaphragm and the second vibrating diaphragm are respectively and correspondingly positioned in the first acoustic cavity and the second acoustic cavity; the first acoustic cavity is communicated with the first sound outlet and the second sound outlet, and the second acoustic cavity is communicated with the third sound outlet and the fourth sound outlet. Through the structure, a quadrupole sound field is formed, and therefore the sound production device is ensured to reduce sound leakage and increase sound loudness under different modes.

Description

Sound production device and electronic equipment

Technical Field

The utility model belongs to a relate to electro-acoustic conversion technology field, concretely relates to sound generating mechanism and electronic equipment.

Background

Today, the problem of receiver leakage in smart mobile telephony devices is often annoying to consumers. When a call is made in a public place, the existence of other people at the side cannot be avoided, and in order to protect privacy, the volume of the telephone receiver needs to be reduced, but meanwhile, the low loudness can increase the signal-to-noise ratio of the sound generated by the telephone receiver, so that the identifiability of sound information is reduced.

Products (like AR, VR, bluetooth glasses etc.) are dressed to intelligence, have comparatively serious lou sound problem equally, and current product has the design of sound leakage prevention, but does not reach the requirement of protection privacy far away.

In addition, since the two-speaker stereo design in mobile communication devices became available, the two-speaker design was favored by consumers, and users pursued the stereo sound effect more and more; however, due to space limitations, the top speaker performs less than the bottom speaker and does not achieve a perfect stereo effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sound generating mechanism and electronic equipment to solve the sound leakage problem that sound generating mechanism exists among the prior art.

The utility model discloses a first aspect provides sound generating mechanism, sound generating mechanism includes:

the shell is provided with an inner cavity and a first sound outlet hole, a second sound outlet hole, a third sound outlet hole and a fourth sound outlet hole which are communicated with the inner cavity;

the double-sided sounding unit is characterized in that a first vibrating diaphragm and a second vibrating diaphragm which can adjust the vibration direction are respectively arranged on two opposite sides of the double-sided sounding unit; the double-sided sound production unit is arranged in the inner cavity of the shell and divides the inner cavity into a first acoustic cavity and a second acoustic cavity which are isolated from each other, and the first vibrating diaphragm and the second vibrating diaphragm are respectively and correspondingly positioned in the first acoustic cavity and the second acoustic cavity;

the first acoustic cavity is communicated with the first sound outlet and the second sound outlet, and the second acoustic cavity is communicated with the third sound outlet and the fourth sound outlet.

According to the utility model discloses a sound generating mechanism forms first acoustics cavity and second acoustics cavity in arranging two-sided sound producing unit in the casing through the setting, later through the first phonate hole and the second phonate hole with first acoustics cavity intercommunication, with the third phonate hole of second acoustics cavity intercommunication, the radiation mouth of fourth phonate hole conduct sound to form the quadrupole sound field. When the sound production device is used as a receiver in practical use, the double-sided vibrating diaphragm vibrates in the same direction to form a sound quadrupole, so that the volume of the receiver can be reduced to prevent sound leakage; when the sound generating device is used as a loudspeaker, the double-sided vibrating diaphragm vibrates reversely, the sounds of the four radiation sources are mutually superposed, and the sound loudness is increased. By means of the structure, the sound producing device is guaranteed to reduce sound leakage and increase sound loudness under different modes.

In addition, according to the utility model discloses a sound generating mechanism still can have following additional technical characterstic:

in some embodiments of the present invention, the first sound hole and the third sound hole have the same sound emitting direction, and the second sound hole and the fourth sound hole have the same sound emitting direction.

In some embodiments of the present invention, the sound emitting direction of the first sound emitting hole is perpendicular to or forms a set angle with the sound emitting direction of the second sound emitting hole.

In some embodiments of the present invention, the double-sided sound generating unit is formed by combining two single-sided sound generating units, the first vibrating diaphragm and the second vibrating diaphragm are respectively disposed on the two single-sided sound generating units, and the first vibrating diaphragm and the second vibrating diaphragm are disposed on two opposite sides of the double-sided sound generating unit; or

The double-sided sounding unit comprises a first vibration system and a second vibration system which are arranged back to back, the first vibrating diaphragm is arranged on the first vibration system, and the second vibrating diaphragm is arranged on the second vibration system.

In some embodiments of the present invention, the first vibration system and the second vibration system share the same magnetic circuit system.

The utility model discloses an in some embodiments, the casing is including having the first half shell in first sound hole, second sound hole and having the second half shell in third sound hole, fourth sound hole, two-sided sound production unit clamp is located first half shell with between the second half shell, first vibrating diaphragm with first half shell encloses to close and forms first acoustics cavity, the second vibrating diaphragm with second half shell encloses to close and forms second acoustics cavity.

The utility model discloses an in some embodiments, be equipped with the first extension that has first phonate hole and the second extension that has the second phonate hole on the first half shell, be equipped with the third extension that has the third phonate hole and the fourth extension that has the fourth phonate hole on the second half shell, first extension, second extension, third extension and fourth extension are crisscross to be laid.

The second aspect of the present invention further provides an electronic device, wherein the electronic device includes any one of the sound generating devices.

In some embodiments of the present invention, the portable electronic device further comprises a housing having a receiving cavity, wherein two groups of sound holes are formed on the housing; the sound outlet directions of the two groups of sound holes are vertical or form a set included angle, the sound generating device is arranged in the accommodating cavity of the shell, the first sound outlet and the third sound outlet correspond to one group of sound holes, and the second sound outlet and the fourth sound outlet correspond to the other group of sound holes.

In some embodiments of the present invention, the electronic device has an earpiece mode and a play-out mode, and in the earpiece mode, the first diaphragm and the second diaphragm vibrate in the same direction; in the outward mode, the first diaphragm and the second diaphragm vibrate in opposite directions.

In some embodiments of the present invention, the electronic device is a wearable device.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a sound generating device 1 according to some embodiments of the present application;

fig. 2 is a schematic view of another angle of the sound emitting device 1 according to some embodiments of the present application;

FIG. 3 is a schematic view of the backside structure of FIG. 2;

FIG. 4 is an exploded view of FIG. 2;

fig. 5 is a schematic view of the structure of the first half shell and the double-sided sound generating unit;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

fig. 7 is a schematic view of the structure of the second half shell and the double-sided sound generating unit;

FIG. 8 is a schematic cross-sectional view of FIG. 7;

fig. 9 is a schematic structural diagram of an electronic device with the sound generating device in fig. 1;

FIG. 10 is an exploded view of the electronic device of FIG. 9;

FIG. 11 is a partial block diagram of the electronic device of FIG. 9;

FIG. 12 isbase:Sub>A schematic cross-sectional view taken along line A-A in FIG. 11;

FIG. 13 is a schematic structural diagram of another embodiment of an electronic device having the sound generating apparatus of FIG. 1;

FIG. 14 is a schematic view of the temple of FIG. 13;

FIG. 15 is a front view of FIG. 14;

FIG. 16 is a schematic cross-sectional view taken along line B-B in FIG. 15;

fig. 17 is a schematic cross-sectional view of C-C in fig. 15.

Description of the reference numerals:

1-a sound producing device;

10-shell, 11-first half-shell, 111-first acoustic cavity, 112-first extension, 1121-first sound outlet, 113-second extension, 1131-second sound outlet; 12-second half-shell, 121-second acoustic cavity, 122-third extension, 1221-third sound outlet, 123-fourth extension, 1231-fourth sound outlet; 131-a third acoustic cavity;

20-a double-sided sound generating unit;

3-the mobile phone is connected with the mobile phone,

30-shell, 31-containing cavity, 32-sound hole;

4-wearable glasses.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the terms in the present invention can be understood in a specific case to those skilled in the art.

As the current society focuses more and more on privacy security, in addition to better function optimization, electronic devices in the present stage pay more and more attention to protecting the privacy of users, including how to reduce the sound leakage of the receiver. A first aspect of the present application provides a sound generating apparatus, which is used in an electronic device to generate sound for the electronic device.

As shown in fig. 1 to 9, in some embodiments of the present application, the sound generating apparatus 1 includes a housing 10 and a double-sided sound generating unit 20, wherein the housing 10 is provided with an inner cavity and a first sound outlet hole 1121, a second sound outlet hole 1131, a third sound outlet hole 1221 and a fourth sound outlet hole 1231 which are communicated with the inner cavity; a first vibrating diaphragm and a second vibrating diaphragm which can vibrate in the same direction or in opposite directions are respectively arranged on two opposite sides of the double-sided sound generating unit 20, are arranged in the inner cavity of the shell 10 and are suitable for dividing the inner cavity into a first acoustic cavity 111 and a second acoustic cavity 121 which are isolated from each other, the first vibrating diaphragm is positioned in the first acoustic cavity, and the second vibrating diaphragm is positioned in the second acoustic cavity; the first acoustic cavity 111 is communicated with the first sound outlet hole 1121 and the second sound outlet hole 1131, and the second acoustic cavity 121 is communicated with the third sound outlet hole 1221 and the fourth sound outlet hole 1231.

Two-sided sound generating unit 20 is the cuboid structure, and is equipped with the first vibrating diaphragm and the second vibrating diaphragm of vibration direction adjustable on relative both sides respectively, and two-sided sound generating unit 20 has relative two-sided vibrating diaphragm structure promptly, and during the circular telegram, first vibrating diaphragm and second vibrating diaphragm can vibrate in order to realize the sound production. The double-sided sound generating unit 20 is disposed in the housing 10 to form a first acoustic cavity 111 and a second acoustic cavity 121 which are independent and do not interfere with each other, and then the first sound outlet 1121 and the second sound outlet 1131 which are communicated with the first acoustic cavity 111, and the third sound outlet 1221 and the fourth sound outlet 1231 which are communicated with the second acoustic cavity 121 serve as sound radiation ports to form a quadrupole sound field. In practical use, when the sound production device 1 is used as a receiver, the first vibrating diaphragm and the second vibrating diaphragm vibrate in the same direction to form a sound quadrupole, so that sound leakage can be reduced; when the sound generating device 1 is used as a loudspeaker, the first vibrating diaphragm and the second vibrating diaphragm vibrate reversely, the sounds of the four radiation sources are mutually superposed, the sound loudness is increased, and the stereo effect of the loudspeaker is improved. That is, with the above configuration, when the sound emission device 1 is used as a receiver, it is possible to reduce sound leakage and protect privacy, and when the sound emission device 1 is used as a speaker, it is possible to increase the sound loudness.

As shown in fig. 1 to 4, in some embodiments of the present application, the sound emitting directions of the first sound emitting hole 1121 and the third sound emitting hole 1221 are the same, and the sound emitting directions of the second sound emitting hole 1131 and the fourth sound emitting hole 1231 are the same. The above arrangement is suitable for guiding sound through the first sound outlet hole 1121, the second sound outlet hole 1131, the third sound outlet hole 1221, and the fourth sound outlet hole 1231, so that sound emitted from the dual-sided sound emitting unit 20 can be gathered and mixed with each other based on the guiding function of the first sound outlet hole 1121, the second sound outlet hole 1131, the third sound outlet hole 1221, and the fourth sound outlet hole 1231, and stereo sound effects can be formed based on the difference of sound emitting directions.

In some embodiments of the present application, the first sound outlet hole 1121 is perpendicular to or forms a set angle with the direction of the second sound outlet hole 32. Specifically, the angle of setting for the sound hole cooperates the angle of the sound hole of electronic equipment and sets up to in the improvement with the 32 adaptation degrees in sound hole of electronic equipment, improve the installation convenience.

In some embodiments of the present application, the two-sided sound generating unit 20 is formed by combining two single-sided sound generating units, the first vibrating diaphragm and the second vibrating diaphragm are respectively and correspondingly disposed on the two single-sided sound generating units, and the first vibrating diaphragm and the second vibrating diaphragm are located on two opposite sides of the two-sided sound generating units, that is, the two-sided sound generating units are formed by laminating the two single-sided sound generating units back to back. Specifically, single face sound production unit all includes open box body and magnetic circuit of single face, vibrating diaphragm and voice coil loudspeaker voice coil, and wherein magnetic circuit is fixed in the box body, and the vibrating diaphragm is fixed in the uncovered department of box body, and the one end and the vibrating diaphragm of voice coil loudspeaker voice coil are connected, and the other end is arranged in the magnetic gap that magnetic circuit formed to can vibrate in the magnetic gap for magnetic circuit when the circular telegram, and then drive vibrating diaphragm vibration sound production. The vibrating diaphragms of the two single-sided sound production units are respectively used as a first vibrating diaphragm and a second vibrating diaphragm, and the two single-sided sound production units can be independently controlled so that the two-sided sound production units are provided with the first vibrating diaphragm and the second vibrating diaphragm with adjustable vibration directions.

In some embodiments of the present application, the two-sided sound generating unit 20 includes a first vibration system and a second vibration system, which are disposed back to back, where the first diaphragm is disposed in the first vibration system, and the second diaphragm is disposed in the second vibration system. Preferably, the first vibration system and the second vibration system share the same magnetic circuit system. Specifically, two-sided sound production unit still includes two-way open box body and magnetic circuit, magnetic circuit locates the centre of box body, first vibration system includes first vibrating diaphragm and the first voice coil loudspeaker voice coil of being connected with first vibrating diaphragm, second vibration system includes second vibrating diaphragm and the second voice coil loudspeaker voice coil of being connected with the second vibrating diaphragm, the two sides openness department of box body is located to first vibrating diaphragm and second vibrating diaphragm branch, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil cartridge are in the magnetic gap that magnetic circuit formed, and can vibrate in the magnetic gap for magnetic circuit when the circular telegram, and the vibration mutual noninterference of first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, and then drive first vibrating diaphragm and second vibrating diaphragm vibration. First voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil all can be controlled alone to make two-sided sound generating unit have vibration direction adjustable first vibrating diaphragm and second vibrating diaphragm.

Compared with the double-sided sounding unit 20 formed by back-to-back bonding of the two single-sided sounding units, the double-sided sounding unit 20 formed by the first vibration system and the second vibration system sharing the same magnetic circuit system has thinner thickness due to the fact that one set of magnetic circuit system is omitted, occupied size is reduced, and the sounding device 1 is light in weight.

With reference to fig. 5 to 8, in some embodiments of the present application, the casing 10 includes a first half-shell 11 having the first sound outlet hole 1121 and the second sound outlet hole 1131, and a second half-shell 12 having the third sound outlet hole 1221 and the fourth sound outlet hole 1231, the double-sided sound generating unit 20 is sandwiched between the first half-shell 11 and the second half-shell 12, a first diaphragm and the first half-shell 11 enclose to form the first acoustic cavity 111, and a second diaphragm and the second half-shell 12 enclose to form the second acoustic cavity 121.

Specifically, as shown in fig. 5 to 6, the first half shell 11 is an open rectangular parallelepiped shell structure, and includes a first cavity, a second cavity, and a first sound outlet hole 1121 and a second sound outlet hole 1131 that are communicated with the second cavity, where a volume of the first cavity is greater than that of the second cavity, and the first cavity is separated by a step surface extending inward from the first half shell 11; the first accommodating cavity is used for being correspondingly installed with the double-sided sound generating unit 20 and stopping the double-sided sound generating unit 20 through a step surface, and the second accommodating cavity and one vibration surface of the double-sided sound generating unit 20 are enclosed to form a first acoustic cavity 111. Referring to fig. 7-8, the second half shell 12 is an open rectangular parallelepiped shell structure, and includes a third cavity, a fourth cavity, and a first sound outlet hole 1121 and a second sound outlet hole 1131 that are communicated with the fourth cavity, where the volume of the third cavity is greater than that of the fourth cavity and is separated by a step surface extending inward from the second half shell 12; the third accommodating cavity is used for being installed corresponding to the double-sided sound generating unit 20 and stopping the double-sided sound generating unit 20 through a step surface, and the fourth accommodating cavity and the other vibration surface of the double-sided sound generating unit 20 are enclosed to form a second acoustic cavity 121.

In some embodiments of the present disclosure, as shown in fig. 1 to 3, the first half shell 11 and the second half shell 12 form a gap around the double-sided sound generating unit 20, and the gap and the sound generating device housing or the electronic device housing structure surround to form a third acoustic cavity 131, so as to isolate sound and prevent sound short circuit.

With reference to fig. 1 to 8, in some embodiments of the present application, a first extending portion 112 having a first sound outlet hole 1121 and a second extending portion 113 having a second sound outlet hole 1131 are disposed on the first half shell 11, a third extending portion 122 having a third sound outlet hole 1221 and a fourth extending portion 123 having a fourth sound outlet hole 1231 are disposed on the second half shell 12, and the first extending portion 112, the second extending portion 113, the third extending portion 122, and the fourth extending portion 123 are disposed in a staggered manner. Specifically, as shown in the figure, the first extension portion 112 and the second extension portion 113 are disposed at two ends of the first half shell 11, and are adapted to transmit the sound in the first acoustic cavity 111 from two sides of the first acoustic cavity 111. The third extension portion 122 and the fourth extension portion 123 are disposed at one side of the second acoustic cavity 121, and do not interfere with the first extension portion 112 and the second extension portion 113. The above structure is suitable for separating the two acoustic cavities by the first extending portion 112, the second extending portion 113, the third extending portion 122 and the third extending portion 122, so as to reduce mutual interference when sound of the two acoustic cavities is transmitted, and on the other hand, is suitable for adjusting positions of the first sound outlet hole 1121, the second sound outlet hole 1131, the third sound outlet hole 1221 and the fourth sound outlet hole 1231, so as to facilitate subsequent installation in the electronic device.

In some embodiments of the present application, the first extension portion 112 and the third extension portion 122 are arranged side by side along a plane where the first half-shell 11 is located, and the sound emitting direction is parallel to the vibration direction of the diaphragm of the double-sided sound emitting unit 20; the second extending portion 113 and the fourth extending portion 123 are arranged side by side along the plane of the second half shell 12, and the sound emitting direction is perpendicular to the vibration direction of the diaphragm of the double-sided sound emitting unit 20. Specifically, the first extension portion 112, the second extension portion 113, the third extension portion 122 and the fourth extension portion 123 are arranged in an X-shape on the side surface of the housing 10 in an interlaced manner, wherein the first extension portion 112 and the second extension portion 113 are located on one diagonal of the X-shape, and the third extension portion 122 and the fourth extension portion 123 are located on the other diagonal. Through the staggered arrangement, the sound of the first acoustic cavity 111 and the sound of the second acoustic cavity 121 are transmitted in a consistent manner, and the mixing effect is good.

As shown in fig. 9-17, the present application further discloses an electronic device having the sound generating apparatus 1.

In some embodiments of the present application, as shown in fig. 9-12, the electronic device is a mobile phone 3 or similar smart mobile phone device. In addition to the sound generating device 1, the mobile phone 3 or the similar intelligent mobile phone device further includes a housing 30 having a receiving cavity 31, and two sound holes 32 are formed on the housing 30; the sound outlet directions of the two groups of sound holes are vertical or form a set angle; the sound emitting device 1 is disposed in the accommodating cavity of the housing 30, and the first sound emitting hole 1121 and the third sound emitting hole 1221 correspond to one group of sound holes 32, and the second sound emitting hole 1131 and the fourth sound emitting hole 1231 correspond to the other group of sound holes 32.

Specifically, the sound generating device 1 is disposed on the top of the housing cavity 31 of the mobile phone 3, and is mainly used as a receiver (earphone), but may also be used as a speaker. The top surface and the front side surface of the casing 10 are respectively provided with two sound holes 32, and the sound holes 32 can be small holes which are periodically arranged or whole slits; the sound holes 32 on the top surface correspond to the second sound holes 1131 and the fourth sound holes 1231, respectively, and the two sound holes 32 on the front side surface correspond to the first sound holes 1121 and the third sound holes 1221, respectively. The center distance d between the adjacent sound holes 32 is less than or equal to 34mm, namely, the center distance d between the two sound holes 32 on the front side surface is less than or equal to 34mm, and the center distance d between the sound holes on the front side surface and the sound holes on the top surface is less than or equal to 34mm. The above-mentioned distance limitation makes the sound production position more compact, and then strengthens each other between the sound hole.

In some embodiments of the present application, the electronic device has an earpiece mode in which the first diaphragm and the second diaphragm vibrate in the same direction and a play-out mode; in the outward mode, the first diaphragm and the second diaphragm vibrate in opposite directions.

Since the mobile phone 3 or the similar intelligent mobile communication device adopts all technical solutions of all the embodiments, at least all the advantages brought by the technical solutions of the embodiments are achieved, and no further description is given here.

In some embodiments of the present application, as shown in fig. 13-17, the electronic device is a wearable glasses 4, such as AR, VR, bluetooth glasses, etc., and the shape of the casing 10 in the sound generating device 1 can be adjusted to match the shape of the temple. At this time, the double-sided sound unit 20 is provided at the middle of the temple and corresponds to the position of the ear after wearing. Because the wearable device adopts the technical scheme in the above-mentioned partial implementation mode, all the beneficial effects brought by the technical scheme in the corresponding implementation mode are at least achieved, and are not repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims (11)

1. A sound generating device, comprising:

the shell is provided with an inner cavity and a first sound outlet, a second sound outlet, a third sound outlet and a fourth sound outlet which are communicated with the inner cavity;

the double-sided sounding unit is characterized in that a first vibrating diaphragm and a second vibrating diaphragm which can adjust the vibration direction are respectively arranged on two opposite sides of the double-sided sounding unit; the double-sided sound production unit is arranged in the inner cavity of the shell and divides the inner cavity into a first acoustic cavity and a second acoustic cavity which are isolated from each other, and the first vibrating diaphragm and the second vibrating diaphragm are respectively and correspondingly positioned in the first acoustic cavity and the second acoustic cavity;

the first acoustic cavity is communicated with the first sound outlet and the second sound outlet, and the second acoustic cavity is communicated with the third sound outlet and the fourth sound outlet.

2. The sound emitting device according to claim 1, wherein said first sound outlet and said third sound outlet have the same sound emitting direction, and said second sound outlet and said fourth sound outlet have the same sound emitting direction.

3. The sound generating apparatus according to claim 2, wherein the sound emitting direction of the first sound emitting hole is perpendicular to or forms a set angle with the sound emitting direction of the second sound emitting hole.

4. The sounding device according to claim 1, wherein the double-sided sounding unit is formed by combining two single-sided sounding units, the first diaphragm and the second diaphragm are respectively and correspondingly disposed on the two single-sided sounding units, and the first diaphragm and the second diaphragm are disposed on two opposite sides of the double-sided sounding unit; or

The double-sided sounding unit comprises a first vibration system and a second vibration system which are arranged back to back, the first vibrating diaphragm is arranged on the first vibration system, and the second vibrating diaphragm is arranged on the second vibration system.

5. The sound generating apparatus according to claim 4, wherein said first vibration system and said second vibration system share a same magnetic circuit system.

6. The sound generating device according to any one of claims 1 to 5, wherein the casing includes a first half shell having the first sound outlet hole and a second half shell having the third sound outlet hole and a fourth sound outlet hole, the double-sided sound generating unit is sandwiched between the first half shell and the second half shell, the first diaphragm and the first half shell enclose to form the first acoustic cavity, and the second diaphragm and the second half shell enclose to form the second acoustic cavity.

7. The sound generating apparatus as claimed in claim 6, wherein the first housing half has a first extension portion with a first sound outlet and a second extension portion with a second sound outlet, the second housing half has a third extension portion with a third sound outlet and a fourth extension portion with a fourth sound outlet, and the first extension portion, the second extension portion, the third extension portion and the fourth extension portion are arranged in a staggered manner.

8. An electronic device, characterized in that it comprises a sound emitting device according to any one of claims 1 to 7.

9. The electronic device of claim 8, further comprising a housing having a receiving cavity, wherein the housing has two sets of sound holes; the sound outlet directions of the two groups of sound holes are vertical or form a set included angle, the sound generating device is arranged in the accommodating cavity of the shell, the first sound outlet and the third sound outlet correspond to one group of sound holes, and the second sound outlet and the fourth sound outlet correspond to the other group of sound holes.

10. The electronic device of claim 8, wherein the electronic device has an earpiece mode in which the first diaphragm and the second diaphragm vibrate in the same direction and a play-out mode; in the outward mode, the first diaphragm and the second diaphragm vibrate in opposite directions.

11. The electronic device of claim 8, wherein the electronic device is a wearable device.

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