CN220292184U - Sound generating device and electronic equipment - Google Patents

Abstract

The utility model discloses a sound generating device and electronic equipment. The shell comprises a plastic part made of plastic materials, the vibration system comprises a vibrating diaphragm assembly, the periphery of the vibrating diaphragm assembly is connected with the shell, the magnetic circuit system is connected with the shell, and the magnetic circuit system, the vibrating diaphragm assembly and the shell jointly define an acoustic cavity of the sound generating device; be equipped with on the plastic portion with the sound hole that lets out of sound cavity intercommunication, sound generating mechanism is including covering the ventilative separator of metal that lets out the sound hole, and the periphery of the ventilative separator of metal is equipped with grabs gluey portion, grabs gluey portion and includes at least first extension and the second extension that extend along different directions, and the ventilative separator of metal and plastic portion integrative injection moulding, grabs gluey position in the plastic portion. According to the sounding device, the adhesive grabbing part is arranged on the periphery of the metal breathable isolation piece, so that the connection strength between the metal breathable isolation piece and the plastic part can be improved, and the structural reliability of the sounding device can be improved.

Description

Sound generating device and electronic equipment

Technical Field

The present utility model relates to electroacoustic devices, and more particularly, to a sound generating device and an electronic device.

Background

With the development of electronic product technology, requirements of smart terminal devices such as mobile phones and Pad for lightening and thinning speakers are also increasing, and therefore, speakers are also becoming thinner.

In the related art, the speaker includes the basin frame, is fixed in the vibration system of basin frame and the magnetic circuit system of drive vibration system vibration, is equipped with the hole of revealing that runs through the setting on the basin frame, and the hole upper cover of revealing is equipped with the plastic screen cloth. The plastic mesh cloth can play a role in isolating sound absorbing materials, but has the problems of poor high temperature resistance, variability, low structural strength and the like, and is easy to deform in the injection molding process, so that the plastic mesh cloth is inclined, leakage holes cannot be accurately covered, and the use reliability of a loudspeaker is reduced.

Moreover, along with the continuous thinning of speaker size, the basin frame thickness of being connected with plastic screen cloth injection molding also becomes thinner to reduce the joint strength between plastic screen cloth and the basin frame, further reduced the operational reliability of speaker.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the sound generating device which has the advantages of high structural reliability and light and thin requirements.

The utility model also provides electronic equipment with the vibration sounding device.

According to an embodiment of the first aspect of the present utility model, a sound emitting device includes: a housing including a plastic portion made of a plastic material; the vibration system comprises a vibrating diaphragm assembly, the periphery of the vibrating diaphragm assembly is connected with the shell, and the magnetic circuit system is connected with the shell and jointly defines an acoustic cavity of the sound generating device with the vibrating diaphragm assembly and the shell; the sound generating device comprises a metal ventilation isolation piece which covers the sound discharging hole, a glue grabbing portion is arranged on the periphery of the metal ventilation isolation piece, the glue grabbing portion at least comprises a first extending portion and a second extending portion which extend in different directions, the metal ventilation isolation piece and the plastic portion are integrally injection molded, and the glue grabbing portion is located in the plastic portion.

According to the sound production device provided by the embodiment of the first aspect of the utility model, the metal ventilation isolation piece is arranged, so that the structural strength and the high temperature resistance of the metal ventilation isolation piece can be improved, and when the metal ventilation isolation piece and the plastic part are integrally injection molded, the metal ventilation isolation piece can be ensured not to deform and misplace, so that the assembly precision of the metal ventilation isolation piece can be improved. Through setting up the portion of grabbing glue at the periphery edge of metal ventilative separator, area of contact between metal ventilative separator and the plastic portion can be increased to can promote the joint strength between metal ventilative separator and the plastic portion, promote sound generating mechanism's structural reliability.

According to some embodiments of the utility model, the metal ventilation spacer comprises a body and ventilation holes arranged on the body, and the glue grabbing part is arranged on the periphery of the body.

In some embodiments of the utility model, the vent has a pore size of between 0.04mm and 0.15 mm.

In some embodiments of the utility model, the vent is formed by etching or stamping.

According to some embodiments of the utility model, the surface area of the glue grip is 10% -30% of the surface area of the metal vapor permeable separator.

According to some embodiments of the utility model, the magnetic circuit includes a central magnetic portion and a side magnetic portion disposed on an outer periphery of the central magnetic portion, the side magnetic portion includes a side magnet and a side magnetic conductive plate, the side magnetic conductive plate includes a flat plate portion disposed on one side of the side magnet and an extension portion extending toward a direction approaching the diaphragm assembly with respect to the flat plate portion, and the housing further includes a metal portion connected to the plastic portion, the extension portion being formed as the metal portion.

In some embodiments of the present utility model, the housing is formed in a square structure, the housing includes a long side portion and a short side portion, the plastic portion is located at the short side portion, the side magnetic conductive plate includes a first side magnetic conductive plate located at the long side portion and a second side magnetic conductive plate located at the short side portion, and the first side magnetic conductive plate is provided with the extension portion.

In some embodiments of the present utility model, the magnetic circuit system further includes a magnetic conductive yoke, and the central magnetic portion and the side magnetic portions are both disposed on the magnetic conductive yoke, and the magnetic conductive yoke is in sealing fit with one end of the housing, which is far away from the diaphragm assembly.

According to some embodiments of the present utility model, the plurality of air release holes are distributed at intervals, the plurality of metal air-permeable spacers are provided, and the plurality of metal air-permeable spacers are arranged in one-to-one correspondence with the plurality of air release holes; or, the metal ventilation isolating piece is one, and the metal ventilation isolating piece covers a plurality of air leakage holes at the same time.

An electronic apparatus according to an embodiment of the second aspect of the present utility model includes the vibration sound emitting device according to the above-described embodiment of the present utility model.

According to the electronic equipment of the second aspect of the embodiment of the utility model, by arranging the sounding device, the structural reliability of the sounding device is high, and the requirements of light and thin can be met, so that the product quality of the electronic equipment can be improved, and the product market competitiveness of the electronic equipment can be improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is an exploded view of a sound emitting device according to one embodiment of the present utility model;

FIG. 2 is a side view of a sound emitting device according to one embodiment of the present utility model;

FIG. 3 is a vertical cross-sectional view of a sound emitting device according to one embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 indicated by circle A;

FIG. 5 is a schematic view showing an assembled state of the metal ventilation spacer and the plastic part according to an embodiment of the present utility model;

FIG. 6 is a schematic view of the combination of a metal vapor permeable separator and a metal frit according to an embodiment of the present utility model.

Reference numerals:

the sound-emitting device 100 is configured to emit light,

the shell 1, the plastic part 11, the sound release hole 11a,

vibration system 2, diaphragm assembly 21, diaphragm 211, dome 212, voice coil 22,

the magnetic circuit 3, the central magnetic portion 31, the central magnet 311, the central magnetic conductive plate 312, the side magnetic portion 32, the side magnet 321, the side magnetic conductive plate 322, the first side magnetic conductive plate 322a, the flat plate portion 322aa, the extension portion 322ab, the second side magnetic conductive plate 322b, the magnetic yoke 33, the avoiding portion 33a,

the metal ventilation spacer 4, the ventilation holes 4a, the body 41, the glue grasping portion 42, the first extending portion 421, the second extending portion 422,

and a metal strand 200.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar components or components having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A sound emitting device 100 according to an embodiment of the first aspect of the present utility model is described in detail below with reference to fig. 1 to 6, and the sound emitting device 100 may be a speaker unit.

As shown in fig. 1 and 3, a sound emitting device 100 according to an embodiment of the first aspect of the present utility model includes: a housing 1, a vibration system 2 and a magnetic circuit system 3.

Wherein, vibration system 2 includes diaphragm subassembly 21, and diaphragm subassembly 21's periphery is connected with casing 1, and magnetic circuit 3 is connected with casing 1, and diaphragm subassembly 21, casing 1 and magnetic circuit 3 jointly prescribe a limit to the acoustic cavity of sound generating device 100. The shell 1 comprises a plastic part 11 made of plastic materials, a sound discharging hole 11a communicated with the sound cavity is formed in the plastic part 11, the sound generating device 100 comprises a metal ventilation isolation piece 4 covering the sound discharging hole 11a, a glue grabbing part 42 is arranged on the periphery of the metal ventilation isolation piece 4, the glue grabbing part 42 at least comprises a first extending part 421 and a second extending part 422 extending along different directions, the metal ventilation isolation piece 4 and the plastic part 11 are integrally injection molded, and the glue grabbing part 42 is located in the plastic part 11.

Specifically, the vibration system 2 and the magnetic circuit system 3 are respectively fixed on the housing 1, and the diaphragm assembly 21, the magnetic circuit system 3 and the housing 1 together define an acoustic cavity of the acoustic device 100, the plastic part 11 is provided with an acoustic leakage hole 11a communicated with the acoustic cavity, and when the acoustic device 100 works, sound waves can be transmitted through the acoustic hole. Wherein, metal ventilative barrier 4 and plastic portion 11 integrated into one piece injection molding, metal ventilative barrier 4 can play the effect of sound transmission and isolation sound absorption granule, can realize the full filling scheme of sound absorption granule from this. Alternatively, the glue gripping portion 42 may be formed in a zigzag shape, a V-shape, a wavy shape, or the like.

It can be appreciated that, since the adhesive grabbing portion 42 is provided along the outer periphery of the metal air-permeable spacer 4, the adhesive grabbing portion 42 includes at least the first extending portion 421 and the second extending portion 422 extending along different directions, so that the contact area between the metal air-permeable spacer 4 and the plastic portion 11 can be increased, the connection strength between the metal air-permeable spacer 4 and the plastic portion 11 can be improved, and the structural reliability of the sound generating apparatus 100 can be improved. Moreover, since the metal ventilation spacer 4 is made of a metal material, the metal ventilation spacer 4 has strong structural strength and good high temperature resistance, and when the metal ventilation spacer 4 and the plastic part 11 are integrally injection molded, the metal ventilation spacer 4 can be ensured not to deform and misplace, thereby improving the assembly precision of the metal ventilation spacer 4.

Alternatively, the housing 1 may be formed in a frame structure, and the magnetic circuit system 3 may be provided inside the housing 1. Of course, the housing 1 may be disposed on top of the magnetic circuit 3, and the housing 1 and the magnetic circuit 3 together form a housing structure of the sound generating device.

According to the sound generating device 100 of the first embodiment of the present utility model, by providing the metal ventilation spacer 4, the structural strength and the high temperature resistance of the metal ventilation spacer 4 can be improved, and when the metal ventilation spacer 4 and the plastic part 11 are integrally injection molded, the metal ventilation spacer 4 can be ensured not to deform and dislocate, so that the assembly accuracy of the metal ventilation spacer 4 can be improved. Through setting up the portion 42 of grabbing at the periphery edge of the ventilative spacer 4 of metal, can increase the area of contact between ventilative spacer 4 of metal and the plastic portion 11 to can promote the joint strength between ventilative spacer 4 of metal and the plastic portion 11, promote the structural reliability of sound generating mechanism 100.

As shown in fig. 2 and 4, according to some embodiments of the present utility model, the metal ventilation spacer 4 may include a body 41 and ventilation holes 4a provided at the body 41, and the glue grasping portion 42 is provided at an outer circumferential edge of the body 41. For example, the body 41 of the metal ventilation spacer 4 may be formed in a square structure, the adhesive grasping portion 42 may be provided at a long-axis side position of the body 41, the adhesive grasping portion 42 may be provided at a short-axis side position of the body 41, and the adhesive grasping portion 42 may be provided at both long-axis and short-axis side positions of the body 41.

Alternatively, the pore size of the ventilation holes 4a may be between 0.04mm and 0.15mm, thereby not only having ventilation effect, but also effectively isolating the sound-absorbing particles to prevent the sound-absorbing particles from entering the sound cavity. For example, the aperture of the ventilation hole 4a may be 0.04mm, 0.05mm, 0.07mm, 0.1mm, 1.2mm, 1.5mm, or the like. Alternatively, the ventilation holes 4a may be formed by etching or punching. The air holes 4a are formed by etching, so that the position accuracy of the air holes 4a can be improved. The vent holes 4a are formed in a stamping forming mode, so that the forming efficiency of the vent holes 4a can be improved.

In the embodiment shown in fig. 5 and 6, the metal ventilation spacer 4 may be injection-molded by the metal connecting material 200, that is, when the metal ventilation spacer 4 and the plastic part 11 are injection-molded, the metal ventilation spacer 4 and the metal connecting material 200 may be connected together, then the combined structure of the metal ventilation spacer 4 and the metal connecting material 200 is put into an injection mold for injection molding, and after the mold is opened, the metal connecting material 200 is broken off to form an integral injection-molded structure of the plastic part 11 and the metal ventilation spacer 4. Therefore, the metal ventilation spacer 4 can be conveniently positioned and installed, and the assembly precision and the production efficiency are improved.

According to some embodiments of the present utility model, the surface area of the glue gripping portion 42 is 10% -30% of the surface area of the metal air-permeable separator 4, and it is understood that when the surface area of the glue gripping portion 42 is too small, i.e. the contact area between the glue gripping portion 42 and the plastic portion 11 is too small, the connection strength between the glue gripping portion 42 and the plastic portion 11 is reduced, thereby reducing the connection firmness between the metal air-permeable separator 4 and the housing 1. When the surface area of the glue capturing portion 42 is too large, i.e. the contact area between the glue capturing portion 42 and the plastic portion 11 is too large, the glue capturing portion 42 occupies a large portion of the metal air-permeable partition 4, so that the overall weight of the metal air-permeable partition 4 is increased, and the light and thin requirements of the sound generating apparatus 100 cannot be met. When the surface area of the glue grabbing portion 42 is 10% -30% of the surface area of the metal air-permeable spacer 4, the requirements of lightening and thinning of the sound generating device 100 can be met, and the connection strength between the metal air-permeable spacer 4 and the plastic portion 11 can be ensured. For example, the surface area of the glue gripping portion 42 may be 10%, 15%, 20%, 25%, 30% or the like of the surface area of the metal air-permeable separator 4.

According to some embodiments of the present utility model, the magnetic circuit 3 may include a central magnetic portion 31 and a side magnetic portion 32 disposed on the outer periphery of the central magnetic portion 31, the side magnetic portion 32 includes a side magnet 321 and a side magnetic plate 322, the side magnetic plate 322 includes a flat plate portion 322aa disposed on one side of the side magnet 321 and an extension portion 322ab extending toward a direction approaching the diaphragm assembly 21 with respect to the flat plate portion 322aa, the housing 1 further includes a metal portion connected to the plastic portion 11, and the extension portion 322ab is formed as a metal portion, whereby the plastic portion 11 and the extension portion 322ab of the side magnetic plate 322 together form the housing 1 of the sound generating apparatus 100, the overall structure of the sound generating apparatus 100 may be made simpler, and the structural strength of the housing 1 may be improved due to the side magnetic plate 322 being made of a metal material.

As shown in fig. 1, in some embodiments of the present utility model, the housing 1 may be formed in a square structure, the housing 1 includes a major axis side and a minor axis side, the plastic portion 11 is located on the minor axis side, the side magnetic conductive plate 322 includes a first side magnetic conductive plate 322a located on the major axis side and a second side magnetic conductive plate 322b located on the minor axis side, and the first side magnetic conductive plate 322a is provided with an extension portion 322ab. Therefore, by arranging the shell 1 formed by combining the metal structure and the plastic structure, the metal ventilation spacer 4 and the shell 1 can be conveniently assembled, and the structural strength of the shell 1 can be improved.

The installation position of the plastic portion 11 may be set on the long axis side of the housing 1, and the present utility model is not particularly limited thereto.

Alternatively, the first side magnetic plate 322a, the second side magnetic plate 322b, the metal ventilation spacer 4 and the plastic part 11 may be molded in an integral injection molding manner, whereby the assembly efficiency and the assembly accuracy between the respective parts may be improved.

As shown in fig. 1 and 3, in some embodiments of the present utility model, the magnetic circuit system 3 further includes a magnetic yoke 33, where the central magnetic portion 31 and the side magnetic portions 32 may be disposed on the magnetic yoke 33, and the magnetic yoke 33 is in sealing fit with an end of the housing 1 away from the diaphragm assembly 21. For example, the housing 1 may be formed as a frame structure having a cavity structure, the diaphragm assembly 21 may be in sealing engagement with an end surface of one end of the housing 1, the magnetic circuit 3 is located in the cavity structure, and the magnetic yoke 33 is in sealing engagement with an end surface of the other end of the housing 1, so that the diaphragm assembly 21, the housing 1 and the magnetic yoke 33 may define a sealed acoustic cavity structure, and the plastic portion 11 of the housing 1 is provided with an acoustic vent 11a communicating with the acoustic cavity.

In a specific example of the present utility model, the vibration system 2 includes a diaphragm assembly 21 and a voice coil 22, the diaphragm assembly 21 includes a diaphragm 211 and a dome 212 provided on the diaphragm 211, the diaphragm 211 is in sealing engagement with one end face of the housing 1, and one end of the voice coil 22 is connected to the dome 212. The magnetic circuit 3 includes a magnetic yoke 33, a central magnetic portion 31 and a side magnetic portion 32, wherein the central magnetic portion 31 and the side magnetic portion 32 are both disposed on the magnetic yoke 33, the side magnetic portion 32 is disposed on the central magnetic portion 31 and is spaced from the central magnetic portion 31 to form a magnetic gap, and one end of the voice coil 22 away from the dome 212 is inserted into the magnetic gap. Along the vibration direction of the voice coil 22, the opposite part of the magnetic yoke 33 and the voice coil 22 is provided with an avoiding part 33a, the avoiding part 33a can be formed into a groove structure, the avoiding part 33a can also be formed into a through hole structure, the avoiding part 33a can avoid the voice coil 22, and the phenomenon that the voice coil 22 collides with the magnetic yoke 33 under the high-power working state of the sound generating device 100 can be prevented.

In another specific example of the present utility model, the central magnetic portion 31 includes a central magnet 311 and a central magnetically permeable plate 312, the central magnetically permeable plate 312 being provided on a side of the central magnet 311 remote from the magnetically permeable yoke 33. The side magnet portion 32 includes a side magnet 321 and a side magnetic conductive plate 322 provided on a side of the side magnet 321 away from the magnetic conductive yoke 33, the side magnetic conductive plate 322 includes a first side magnetic conductive plate 322a positioned in a long axis direction and a second side magnetic conductive plate 322b positioned in a short axis direction of the housing 1, and the first side magnetic conductive plate 322a and the second side magnetic conductive plate 322b are injection molded integrally with the plastic portion 11, respectively. The diaphragm 211 comprises a folded ring part, an outer fixing part arranged on the outer peripheral side of the folded ring part and an inner fixing part arranged on the inner peripheral side of the folded ring part, the dome 212 is in sealing fit with the inner fixing part, the outer fixing part in the long axis direction of the shell 1 is in sealing fit with the top end of the first side magnetic conduction plate 322a, and the outer fixing part in the short axis direction of the shell 1 is in sealing fit with the top end of the plastic part 11.

According to some embodiments of the present utility model, the number of the air leakage holes 11a may be plural and distributed at intervals, the number of the metal air-permeable spacers 4 is plural, and the plural metal air-permeable spacers 4 are disposed in one-to-one correspondence with the plural air leakage holes 11a, so that the effect that the metal air-permeable spacers 4 are in one-to-one correspondence with the air leakage holes 11a can be achieved, and the isolation effect on the sound-absorbing particles is improved. According to other embodiments of the present utility model, the metal ventilation spacer 4 may be one, and the metal ventilation spacer 4 covers the plurality of ventilation holes 11a at the same time, thereby saving the assembly process and improving the assembly efficiency.

An electronic device according to an embodiment of the second aspect of the present utility model includes the sound generating apparatus 100 according to the above-described embodiment of the present utility model. Alternatively, the electronic device may be a mobile phone, PAD, notebook computer, or the like.

It should be noted that, the sound generating device 100 of the above embodiment of the present utility model may be separately installed in an electronic device, or may be installed in an electronic device in a form of a sound generating module, that is, the sound generating device 100 is installed in a module housing to form a sound generating module, and then the sound generating module is installed in the electronic device.

According to the electronic device of the second aspect of the present utility model, by providing the sound generating apparatus 100, the structural reliability of the sound generating apparatus 100 is high, and the requirement of light and thin can be satisfied, so that the product quality of the electronic device can be improved, and the product market competitiveness of the electronic device can be improved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A sound emitting device, comprising:

a housing including a plastic portion made of a plastic material;

the vibration system comprises a vibrating diaphragm assembly, the periphery of the vibrating diaphragm assembly is connected with the shell, and the magnetic circuit system is connected with the shell and jointly defines an acoustic cavity of the sound generating device with the vibrating diaphragm assembly and the shell;

the sound generating device comprises a metal ventilation isolation piece which covers the sound discharging hole, a glue grabbing portion is arranged on the periphery of the metal ventilation isolation piece, the glue grabbing portion at least comprises a first extension portion and a second extension portion which extend in different directions, the metal ventilation isolation piece is integrally injection molded with the plastic portion, and the glue grabbing portion is located in the plastic portion.

2. The sound generating apparatus according to claim 1, wherein the metal ventilation spacer comprises a body and ventilation holes provided in the body, and the glue grabbing portion is provided on an outer peripheral edge of the body.

3. The sound emitting apparatus of claim 2 wherein the vent has a pore size of between 0.04mm and 0.15 mm.

4. The sound emitting apparatus of claim 2 wherein the vent is formed by etching or stamping.

5. The sound emitting apparatus of claim 1 wherein the surface area of the glue gripping portion is 10% -30% of the surface area of the metal vapor permeable barrier.

6. The sound generating apparatus according to claim 1, wherein the magnetic circuit includes a central magnetic portion and a side magnetic portion provided on an outer periphery of the central magnetic portion, the side magnetic portion includes a side magnet and a side magnetic conductive plate, the side magnetic conductive plate includes a flat plate portion provided on one side of the side magnet and an extension portion extending toward a direction approaching the diaphragm assembly with respect to the flat plate portion, the housing further includes a metal portion connected to the plastic portion, and the extension portion is formed as the metal portion.

7. The sound generating apparatus according to claim 6, wherein the housing is formed in a square structure, the housing includes a long side portion and a short side portion, the plastic portion is located at the short side portion, the side magnetic conductive plate includes a first side magnetic conductive plate located at the long side portion and a second side magnetic conductive plate located at the short side portion, and the first side magnetic conductive plate is provided with the extension portion.

8. The sound generating apparatus of claim 6, wherein the magnetic circuit further comprises a magnetic yoke, the central magnetic portion and the side magnetic portions are disposed on the magnetic yoke, and the magnetic yoke is in sealing engagement with an end of the housing remote from the diaphragm assembly.

9. The sound generating apparatus according to claim 1, wherein the sound discharging holes are distributed at intervals,

the metal ventilation isolating pieces are in a plurality, and the metal ventilation isolating pieces and the sound leakage holes are arranged in a one-to-one correspondence manner;

or, the metal ventilation isolating piece is one, and the metal ventilation isolating piece covers a plurality of sound leakage holes at the same time.

10. An electronic device characterized by comprising an electronic device according to any of claims 1-9.