CN110958508A

CN110958508A - Sound producing device

Info

Publication number: CN110958508A
Application number: CN201911216793.XA
Authority: CN
Inventors: 任超; 刘华伟; 郭翔
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-04-03
Also published as: CN211831073U

Abstract

The invention discloses a sound generating device, which comprises: vibrating diaphragm; the vibrating diaphragm comprises a shell, wherein the shell comprises an installation part and a supporting part, the installation part is a plastic part, the supporting part is a magnetic-conductive metal part, the supporting part is provided with a plurality of corners, one installation part is arranged at each corner, the supporting part and the installation part are molded in an injection mode, the installation part comprises a first connecting part arranged on one side of the supporting part, which is far away from the vibrating diaphragm, the supporting part comprises a supporting body and a side magnetic-conductive plate, and the side magnetic-conductive plate is arranged on the inner circumferential surface of the supporting body; and a magnetic circuit system provided at the first connection portion. The invention provides a sound generating device, and aims to solve the technical problem that in the prior art, the shell is poor in heat dissipation effect.

Description

Sound producing device

Technical Field

The invention relates to the technical field of acoustic energy conversion, in particular to a sound production device.

Background

A micro-speaker is generally composed of a vibration system, a magnetic circuit system, and an auxiliary system. The secondary system comprises a housing in which the vibration system and the magnetic circuit system are normally located. The current shell is mainly a plastic piece, and the plastic piece has low heat conduction coefficient, so the heat dissipation performance is poor, the sound output effect of the loudspeaker is easily influenced, and the improvement of the product performance is restricted.

Disclosure of Invention

The invention mainly aims to provide a sound production device and aims to solve the technical problem that an existing shell is poor in heat dissipation effect.

In order to achieve the above object, the present invention provides a sound generating device, including:

vibrating diaphragm;

the vibrating diaphragm comprises a shell, wherein the shell comprises an installation part and a supporting part, the installation part is a plastic part, the supporting part is a magnetic-conductive metal part, the supporting part is provided with a plurality of corners, one installation part is arranged at each corner, the supporting part and the installation part are molded in an injection mode, the installation part comprises a first connecting part arranged on one side of the supporting part, which is far away from the vibrating diaphragm, the supporting part comprises a supporting body and a side magnetic-conductive plate, and the side magnetic-conductive plate is arranged on the inner circumferential surface of the supporting body; and the number of the first and second groups,

and the magnetic circuit system is arranged on the first connecting part.

Optionally, a pad is arranged on the mounting portion, and the pad is connected with the mounting portion in an injection molding mode.

Optionally, the installation portion further includes a second connection portion located on one side of the vibrating diaphragm, the support body faces the outer side of one side of the vibrating diaphragm, a boss is arranged on the second connection portion, the second connection portion is connected with the boss in an annular mode, and the second connection portion is flush with the surface of the vibrating diaphragm, which faces the boss.

Optionally, the number of the bosses is multiple, the plurality of bosses are arranged at intervals along the circumferential direction of the supporting portion, the corner is arranged between two adjacent bosses, and the mounting portion is arranged at the corner and fills a gap between the two adjacent bosses.

Optionally, two ends of the corner are respectively provided with a hook portion, one of the hook portions extends towards the direction of the diaphragm, and the other hook portion extends towards the direction departing from the diaphragm.

Optionally, the second connecting portion includes a first bending portion, a second bending portion, and a connecting arc portion connecting the first bending portion with the second bending portion, wherein the first bending portion covers one of the hook portions.

Optionally, one of the hook portions is in an inverted L shape, and the other hook portion is in a T shape.

Optionally, the mounting portion further includes a third connecting portion, the third connecting portion is disposed on a side of the support portion away from the diaphragm, the third connecting portion covers another hook portion, and the third connecting portion is disposed between the first connecting portion and the second connecting portion and used for connecting the first connecting portion and the second connecting portion.

Optionally, the side magnetic conductive plate has at least two stages, a stage close to the support body is a stage a, a distance from the stage a to one side of the support portion facing the diaphragm is a first length, a stage far away from the support body is a stage B, a distance from the stage B to one side of the support portion facing the diaphragm is a second length, and the first length is greater than the second length.

Optionally, the third connecting portion has at least two stages, where a stage close to the support body is an a stage, and a stage far from the support body is a B stage, where the a stage is flush with the a stage, and the B stage is flush with the B stage.

Optionally, the first connecting portion is a positioning column, the positioning column protrudes from the support body and extends in a direction away from one side of the vibrating diaphragm, and the outer peripheral surface of the magnetic circuit system abuts against the positioning column.

Optionally, a limiting notch is formed in the outer peripheral surface of the magnetic circuit system, and the positioning column is clamped in the limiting notch.

Optionally, the support body is provided with a plurality of side magnetic conductive plates, the side magnetic conductive plates are arranged at intervals along the inner circumferential surface of the support body, the interval between two adjacent side magnetic conductive plates forms a sound outlet, and the magnetic circuit system is provided with an opening corresponding to the sound outlet.

Optionally, the sound generating device further includes a voice coil, the voice coil is disposed in the gap of the magnetic circuit system, one end of the voice coil is connected to the diaphragm, the voice coil is provided with a lead, and the lead is connected to the pad on the mounting portion;

or, sound generating mechanism still includes the centering piece, the centering piece is located the voice coil loudspeaker voice coil orientation one side of vibrating diaphragm, the voice coil loudspeaker voice coil is fixed in the inboard of centering piece and with centering piece inboard on the interior pad electric connection, the outside of centering piece is fixed in on second connecting portion and the boss, be equipped with outer pad on the outside of centering piece with pad on the installation department is connected.

Compared with the prior art, the technical scheme of the invention has the advantages that the supporting part is arranged as the main body part, and metal is adopted as the material of the supporting part, so that the supporting part can better radiate heat due to higher heat conduction coefficient of the metal, and the heat radiation effect of the generating device is improved. Simultaneously, the corner at the supporting part has set up the installation department of plastics material, easily shaping, and simple process, and the cost is lower. In addition, the installation part forms a first connecting part on one side of the supporting part, which deviates from the vibrating diaphragm, and the magnetic circuit system is installed at the first connecting part, so that the assembly precision is ensured, the assembly steps are simplified, and the assembly efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

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

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

FIG. 3 is a first schematic structural diagram of the housing of FIG. 1;

FIG. 4 is a first schematic structural view of the supporting portion in FIG. 3;

FIG. 5 is a second schematic structural view of the housing of FIG. 1;

FIG. 6 is a schematic view of the housing of FIG. 5 from another perspective;

FIG. 7 is a schematic structural view of the mounting portion of FIG. 5;

FIG. 8 is a second schematic structural view of the sound generating device of FIG. 1 from another perspective;

FIG. 9 is a second schematic structural view of the support part in FIG. 3;

fig. 10 is a schematic structural diagram of a voice coil, a diaphragm and a housing in an embodiment of a sound generating apparatus of the present invention;

fig. 11 is a schematic structural diagram of a voice coil, a centering pad, a diaphragm, and a housing in an embodiment of a sound generating apparatus of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Vibrating diaphragm	20	Outer casing
21	Mounting part	211	First connecting part
				212	Second connecting part	2121	First bending part
2122	Second bending part	2123	Connecting arc part
				213	Third connecting part	22	Supporting part
221	Corner	222	Support body
				223	Edge magnetic conduction plate	224	Boss
225	Hook part	226	Sounding hole
				30	Bonding pad	40	Magnetic circuit system
41	Spacing gap	50	Voice coil
				60	Centering support plate

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a sound generating device which can be a loudspeaker single body, a loudspeaker module or terminal electronic equipment such as a mobile phone, a sound box and the like.

In an embodiment of the present invention, a sound generating apparatus is provided, and referring to fig. 1 to 4, the sound generating apparatus includes:

a diaphragm 10;

the outer shell 20, the outer shell 20 includes an installation portion 21 and a support portion 22, the installation portion 21 is a plastic part, the support portion 22 is a magnetic conductive metal part, the support portion 22 has a plurality of corners 221, each corner 221 is provided with one installation portion 21, the support portion 22 and the installation portion 21 are injection molded, the installation portion 21 includes a first connection portion 211 arranged on one side of the support portion 22 away from the vibrating diaphragm 10, the support portion 22 includes a support body 222 and a side magnetic conductive plate 223, and the side magnetic conductive plate 223 is arranged on the inner circumferential surface of the support body 222; and the number of the first and second groups,

and a magnetic circuit system 40 provided at the first connection portion 211.

In the technical solution adopted in this embodiment, by providing the supporting portion 22 as a main body component and using metal as a material of the supporting portion 22, the supporting portion 22 can better dissipate heat due to a higher heat conduction coefficient of metal, so as to improve the heat dissipation effect of the sound generating apparatus. Meanwhile, the corner 221 of the supporting part 22 is provided with the mounting part 21 made of plastic, so that the forming is easy, the process is simple, and the cost is low. In addition, the mounting portion 21 forms a first connection portion 211 on a side of the supporting portion 22 away from the diaphragm 10, and the magnetic circuit system 40 is mounted at the first connection portion 211, so that the assembly precision is ensured, the assembly steps are simplified, and the assembly efficiency is improved. In addition, the support part 22 and the side magnetic conductive plate 223 are integrally formed, so that the structure and the assembly steps of the generating device are simplified, and the production efficiency is improved.

Specifically, the supporting portion 22 has a first end and a second end opposite to each other, wherein the second end faces the diaphragm 10; the casing 10 is generally square or polygonal, and has a plurality of corners 221, the number of the corners 221 is at least two, because the sound generating device has a positive electrode and a negative electrode, at least two mounting portions 21 are required to connect the positive electrode and the negative electrode, and correspondingly, at least two corners 221 need to be provided. In other embodiments, the housing 10 may be circular or oval, and in this case, a plurality of mounting portions 21 may be provided at intervals on the circumference of the circle, which may be selected according to the practical application. The supporting portion 22 is made of metal material as a main body portion, which can increase the strength of the housing 20, and the metal housing 20 has strong workability, and the metal main body can ensure timely heat dissipation and improve the heat dissipation effect.

In this embodiment, the side magnetic conductive plate 223 extends along the circumferential direction of the support body 222 to form a strip shape, and the support body 222 and the side magnetic conductive plate 223 are integrally formed. Because the side magnetic conductive plate 223 and the support body 222 are integrally formed, on one hand, the strength and rigidity of the support portion 22 can be enhanced, and on the other hand, the size of the side magnetic conductive plate 223 can be larger, so that the side magnetic conductive plate can be better adapted to the magnetic circuit system 40, and a better magnetic conductive effect is ensured.

Further, referring to fig. 5, the mounting portion 21 is provided with a pad 30, and the pad 30 is connected to the mounting portion 21 by injection molding.

In the technical solution adopted in this embodiment, the bonding pad 30 is mainly used for realizing connection with a voice coil lead or the damper 60, the lead of the voice coil 50 may be directly welded to the bonding pad 30, and the damper pad of the damper 60 may also be directly welded to the bonding pad 30. Specifically, the pad 30 and the mounting portion 21 are integrally injection-molded, the pad 30 is convenient to set, and short circuit caused by contact between the pad 30 and the supporting portion 22 can be avoided. In this embodiment, two bonding pads 30 are provided for connecting the positive electrode and the negative electrode, respectively, but in other embodiments, three bonding pads 30 may be provided, and the number is selected according to actual use. It should be noted that each mounting portion 21 is provided with at most one pad 30, and it is understood that one pad 30 may be provided on the mounting portion 21, or the mounting portion 21 is not provided with the pad 30, that is, when two pads 30 need to be provided, only two mounting portions 21 are provided with one pad 30, and the other mounting portions 21 are not provided with the pads 30.

Further, referring to fig. 5, the mounting portion 21 further includes a second connecting portion 212 disposed on a side of the supporting portion 22 facing the diaphragm 10, a boss 224 is disposed on an outer side of the supporting body 222 facing the diaphragm 10, the second connecting portion 212 and the boss 224 form an annular connection, and a surface of the boss 224 facing the diaphragm 10 is flush with the second connecting portion 212.

In the technical solution adopted in this embodiment, the second connection portion 212 is provided for connecting the diaphragm 10, and it can be understood that the diaphragm 10 abuts against the second connection portion 212. Specifically, the bosses 224 and the second connection portions 212 are sequentially and alternately arranged along the circumferential direction of the support body 222, the bosses 224 and the second connection portions 212 are connected to form a closed ring shape, the diaphragm 10 abuts against the second connection portions 212 and the bosses 224, and meanwhile, in order to facilitate the installation of the diaphragm 10 and ensure that the installation effect of the diaphragm 10 is better, in this embodiment, the second connection portions 212 and the bosses 224 are flush with each other toward the surface of the diaphragm 10. In addition, the boss 224 is arranged outside the support body 222, so that the size of the shell 20 along the through direction of the shell is increased, the size of the sound cavity in the shell 20 is increased, and the sound production effect is improved. Further, the weight of the housing 20 can be reduced, which is advantageous for reducing the overall weight of the sound generating apparatus.

Further, referring to fig. 4 and 5, the number of the bosses 224 is multiple, the multiple bosses 224 are arranged at intervals along the circumferential direction of the supporting portion 22, the corner 221 is disposed between two adjacent bosses 224, and the mounting portion 21 is disposed at the corner 221 and fills a gap between two adjacent bosses 224.

In the technical scheme that this embodiment adopted, a plurality of bosss 224 are all located and are supported body 222 towards the surface of vibrating diaphragm 10, can increase the fixed effect of installation department 21 on the one hand, strengthen the stability of installation department 21, on the other hand can increase the height of shell 20 through boss 224 to guarantee that sound generating mechanism has great vibration space and ensures the sound production effect. In addition, the plurality of bosses 224 are disconnected at the corners 221, and the connection between the second connection portions 212 and the bosses 224 can reduce the material of the support portion 22, thereby reducing the manufacturing cost and the overall weight of the sound generating device.

Further, referring to fig. 4, two ends of the corner 221 are respectively provided with a hook portion 225, wherein one hook portion 225 extends toward the diaphragm 10, and the other hook portion 225 extends away from one side of the diaphragm 10.

In the technical solution adopted in this embodiment, in order to further improve the fixing effect of the mounting portion 21 and the supporting portion 22, a hook portion 225 is provided. Specifically, two hook portions 225 are respectively arranged at each corner 221, specifically, each corner 221 is arranged between two adjacent bosses 224, one hook portion 225 is arranged at one end of the corner 221 close to one adjacent boss 224, and the other hook portion 225 is arranged at one end of the corner 221 close to the other adjacent boss 224, that is, one hook portion 225 is arranged at one side of the boss 224 adjacent to the corner 221, which faces the corner 221. Further, the hook portions 225 extend in opposite directions, and the contact area between the mounting portion 21 and the support portion 22 can be increased from different directions, and in the present embodiment, one of the hook portions 225 extends in a direction toward the diaphragm 10 side, and the other hook portion 225 extends in a direction away from the diaphragm 10 side. Simultaneously, hook portion 225 can increase the area of contact with installation department 21, has better fixed effect, avoids installation department 21 to drop, and in addition, hook portion 225 can also increase the intensity of installation department 21 as the strengthening rib.

Further, referring to fig. 7, the second connecting portion 212 includes a first bending portion 2121, a second bending portion 2122, and a connecting arc portion 2123 connecting the first bending portion 2121 and the second bending portion 2122, wherein the first bending portion 2121 covers one hook portion 225.

In the solution adopted in this embodiment, in order to further ensure the fixing effect of the second connecting portion 212 and the support body 222, the second connecting portion 212 is provided with a first bending portion 2121, a second bending portion 2122, and a connecting arc portion 2123 connecting the first bending portion 2121 and the second bending portion 2122. It is specific, support body 222 and include two sets of sides relatively, and set up the corner 221 between adjacent side, the side connects into closed loop configuration with corner 221 in turn, first portion 2121 that bends, second portion 2122 that bends is connected with adjacent side, thereby can guarantee to support body 222 weight distribution's homogeneity, ensure the connection effect, and, connect into a whole through connecting arc portion 2123, the stability of whole fixed effect has been improved, and simultaneously, it is the arc to connect arc portion 2123, difficult fracture when the atress, fixed effect has further been guaranteed. In addition, the first bent portion 2121 covers one hook portion 225, so that a contact area between the mounting portion 21 and the support portion 22 is increased, and stability of the mounting portion 21 on the support portion 22 can be improved.

Further, one hook portion 225 is inverted L-shaped, and the other hook portion 225 is T-shaped.

In the technical solution adopted in this embodiment, in order to further improve the stability of the mounting portion 21 on the supporting portion 22, the hook portion 225 is arranged in an inverted L shape or a T shape, so that the contact area between the mounting portion 21 and the supporting portion 22 can be increased, and the contact area is increased in different directions, so that the stability of the mounting portion 21 on the supporting portion 22 can be ensured. In this embodiment, one of the hook portions 225 is L-shaped, and the other hook portion 225 is T-shaped, but in other embodiments, both hook portions 225 may be inverted L-shaped, and both hook portions 225 may also be T-shaped, which may be specifically selected in the actual application process.

Further, referring to fig. 6, the mounting portion 21 further includes a third connecting portion 213, the third connecting portion 213 is disposed on a side of the supporting portion 22 away from the diaphragm 10, the third connecting portion 213 covers another hook portion 225, and the third connecting portion 213 is disposed between the first connecting portion 211 and the second connecting portion 212 and is used for connecting the first connecting portion 211 and the second connecting portion 212.

In the technical solution adopted in this embodiment, in order to further ensure the stability of the mounting portion 21, the third connecting portion 213 is provided, specifically, the third connecting portion 213 is provided on one side of the supporting portion 22 departing from the diaphragm 10, and the third connecting portion 213 abuts against one side of the supporting portion 22 departing from the diaphragm 10, so that the contact area between the mounting portion 21 and the supporting portion 22 is increased, and the stability of the mounting portion 21 on the supporting portion 22 is ensured. In addition, the third connecting portion 213 covers the other hook portion 225, so that the contact area between the mounting portion 21 and the supporting portion 22 is further increased, and the stability of the mounting portion 21 is further improved. In the present embodiment, the bonding pad 30 is disposed on a side of the third connection portion 213 facing the diaphragm 10, the bonding pad 30 covers the third connection portion 213 wholly or partially, and the first connection portion 211 is disposed on a side of the third connection portion 213 facing away from the diaphragm 10, it can be understood that the bonding pad 30 and the first connection portion 211 are disposed on two opposite sides of the third connection portion 213. In addition, the third connection portion 213 is disposed between the first connection portion 211 and the second connection portion 212 and connects the first connection portion 211 and the second connection portion 212, so that the first connection portion 211, the second connection portion 212 and the third connection portion 213 form a whole, and the overall strength of the mounting portion 21 is improved.

Further, referring to fig. 4, the side magnetic conductive plate 223 has at least two stages, where a stage close to the support body 222 is a stage a, a distance from the stage a to the side of the support portion 22 facing the diaphragm 10 is a first length, a stage far from the support body 222 is a stage B, and a distance from the stage B to the side of the support portion 22 facing the diaphragm 10 is a second length, where the first length is greater than the second length.

In the technical solution adopted in this embodiment, in order to avoid the descending space and prevent crosstalk, the side magnetic conductive plate 223 is set to be step-shaped, the side magnetic conductive plate 223 has at least two steps, and meanwhile, the step close to the support body 222 is higher than the step far from the support body 222. Because the amplitude ratio of the vibrating diaphragm 10 or the centering support 60 is large when vibrating, the cantilever may contact the side magnetic conductive plate 223, and the side magnetic conductive plate 223 is set to be step-shaped, so that the cantilever can be effectively prevented from contacting the side magnetic conductive plate 223 due to the large-amplitude vibration of the vibrating diaphragm 10, crosstalk is prevented, and the sound production effect is improved.

Further, referring to fig. 5, the third connecting portion 213 has at least two stages, wherein a is a near the supporting body 222 and B is far from the supporting body 222, wherein a is flush with the a and B is flush with the B.

In the technical solution adopted in this embodiment, in order to avoid the descending space and prevent crosstalk, in this embodiment, one side of the third connecting portion 213 facing the diaphragm 10 is set to be a step shape corresponding to the side magnetic conductive plate 223, and each step corresponding to the step is made to be flush with the side of the diaphragm 10.

Further, referring to fig. 6 and 8, the first connection portion 211 is a positioning column, the positioning column protrudes from the support body 222 and extends in a direction away from the side of the diaphragm 10, and the outer peripheral surface of the magnetic circuit system 40 abuts against the positioning column.

In the technical solution adopted in this embodiment, in order to facilitate the installation of the magnetic circuit system 40, the first connection portion 211 is provided as a positioning column, and the magnetic circuit system 40 is clamped and fixed by the positioning column, so that the stability of the magnetic circuit system 40 is ensured. It will be appreciated that each side of the magnetic circuit 40 is abutted by the locating posts, thereby achieving that the magnetic circuit 40 is fixed by the locating posts.

Further, referring to fig. 8, a limiting notch 41 is formed on the outer peripheral surface of the magnetic circuit system 40, and the positioning column is clamped in the limiting notch 41.

In the technical scheme that this embodiment adopted, in order to further make things convenient for magnetic circuit 40's installation, guarantee better installation effect, set up spacing breach 41 in magnetic circuit 40's outer peripheral face, during spacing breach 41 was arranged in to the reference column to reference column butt that can be better is on magnetic circuit 40, avoids magnetic circuit 40 and vibration system skew each other in the installation, can guarantee sound generating mechanism's assembly effect.

Further, referring to fig. 9, a plurality of side magnetic plates 223 are disposed on the support body 222, the side magnetic plates 223 are disposed at intervals along the inner circumferential surface of the support body 222, the interval between two adjacent side magnetic plates 223 forms a sound outlet 226, and an opening (not shown) is disposed on the magnetic circuit system 40 corresponding to the sound outlet 226.

In the technical scheme adopted in this embodiment, the plurality of side magnetic conductive plates 223 are arranged on the support body 222, so that the strength and rigidity of the support portion 22 can be enhanced, the magnetic circuit system 40 can be conveniently provided with more magnets, and the sound production effect of the sound production device can be enhanced. Meanwhile, the sound outlet hole 226 communicates with the opening, so that the air flow inside the diaphragm 10 can be radiated out through the sound outlet hole 226.

Further, referring to fig. 10, the sound generating apparatus further includes a voice coil 50, the voice coil 50 is disposed in the gap of the magnetic circuit system 40, one end of the voice coil 50 is connected to the diaphragm 10, and a lead is disposed on the voice coil 50 and connected to the pad 30 on the mounting portion 21.

In the technical solution adopted in this embodiment, in order to facilitate conduction between the voice coil 50 and the outside, a lead of the voice coil 50 is connected to the pad 30 on the mounting portion 21, and in this embodiment, the lead is disposed on a side of the voice coil 50 away from the diaphragm 10.

Further, referring to fig. 11, the sound generating apparatus further includes a centering sheet 60, the centering sheet 60 is disposed on a side of the voice coil 50 facing the diaphragm 10, the voice coil 50 is fixed on an inner side of the centering sheet 60 and electrically connected to an inner pad on the inner side of the centering sheet 60, an outer side of the centering sheet 60 is fixed on the second connecting portion 212 and the boss 224, and an outer pad is disposed on the outer side of the centering sheet 60 and connected to the pad 30 on the mounting portion 21.

In the technical solution adopted in this embodiment, in order to avoid polarization of the vibration system, a centering pad 60 is provided, the centering pad 60 is disposed on a side of the voice coil 50 facing the diaphragm 10, and is fixed together at the same time, an inner pad of the centering pad 60 is welded to a lead of the voice coil 50, and then an outer pad of the centering pad 60 is welded to the pad 30. So set up, realized switching on of voice coil 50 with the outside, can guarantee voice coil 50 at the correct position of shell 20 for voice coil 50 is when the atress, and vibration system can only follow axial reciprocating motion, and then has guaranteed the sound producing effect.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A sound generating device, the sound generating device comprising:

vibrating diaphragm;

the vibration isolator comprises a shell, wherein the shell comprises an installation part and a supporting part, the installation part is a plastic part, the supporting part is a magnetic conduction metal part, the supporting part is provided with a plurality of corners, each corner is provided with one installation part, the supporting part and the installation part are subjected to injection molding, the installation part comprises a first connection part arranged on one side of the supporting part, which is far away from a vibrating diaphragm, the supporting part comprises a supporting body and a side magnetic conduction plate, and the side magnetic conduction plate is arranged on the inner circumferential surface of the supporting body; and the number of the first and second groups,

and the magnetic circuit system is arranged on the first connecting part.

2. The sound generating apparatus of claim 1, wherein the mounting portion has a bonding pad thereon, and the bonding pad is connected to the mounting portion by injection molding.

3. The sound generating apparatus as claimed in claim 2, wherein the mounting portion further comprises a second connecting portion disposed on a side of the supporting portion facing the diaphragm, a boss is disposed on an outer side of the supporting body facing the diaphragm, the second connecting portion is annularly connected to the boss, and the second connecting portion is flush with a surface of the boss facing the diaphragm.

4. The sound generating apparatus as claimed in claim 3, wherein the number of the bosses is plural, the plural bosses are arranged at intervals along the circumferential direction of the supporting portion, the corner is disposed between two adjacent bosses, and the mounting portion is disposed at the corner and fills a gap between two adjacent bosses.

5. The sound generating apparatus as claimed in claim 4, wherein each of the two ends of the corner has a hook portion, one of the hook portions extends in a direction toward the diaphragm, and the other hook portion extends in a direction away from the diaphragm.

6. The apparatus according to claim 5, wherein said second connecting portion comprises a first bent portion, a second bent portion, and a connecting arc portion connecting said first bent portion and said second bent portion, wherein said first bent portion covers one of said hook portions.

7. The sound generating apparatus of claim 5, wherein one of said hook portions is of an inverted L-shape and the other of said hook portions is of a T-shape.

8. The sound generating apparatus according to claim 5, wherein the mounting portion further includes a third connecting portion, the third connecting portion is disposed on a side of the supporting portion away from the diaphragm, the third connecting portion covers another one of the hook portions, and the third connecting portion is disposed between the first connecting portion and the second connecting portion and is used for connecting the first connecting portion and the second connecting portion.

9. The sound generating apparatus according to claim 8, wherein the edge magnetic plate has at least two stages, the stage close to the support body is a stage a, the stage a is at a first length from the side of the support portion facing the diaphragm, the stage B is at a second length from the side of the support portion facing the diaphragm, and the first length is greater than the second length.

10. The sound generating apparatus of claim 9, wherein the third connecting portion has at least two stages, a stage being a stage close to the support body and a B stage being a stage far from the support body, wherein the a stage is flush with the a stage and the B stage is flush with the B stage.

11. The sound generating apparatus as claimed in claim 1, wherein the first connecting portion is a positioning post, the positioning post protrudes from the supporting body and extends in a direction away from the side of the diaphragm, and an outer peripheral surface of the magnetic circuit system abuts against the positioning post.

12. The sounding device as claimed in claim 11, wherein the magnetic circuit system has a limiting notch on its outer periphery, and the positioning post is engaged with the limiting notch.

13. The sound generating apparatus as claimed in any one of claims 1 to 12, wherein the support body is provided with a plurality of side magnetic plates, the side magnetic plates are spaced apart from each other along an inner circumferential surface of the support body, a sound outlet is formed between two adjacent side magnetic plates, and the magnetic circuit system is provided with an opening corresponding to the sound outlet.

14. The sound generating device according to claim 3, further comprising a voice coil disposed in the gap of the magnetic circuit system, wherein one end of the voice coil is connected to the diaphragm, and the voice coil is provided with a lead connected to the pad on the mounting portion;