CN220087472U

CN220087472U - Sounding device

Info

Publication number: CN220087472U
Application number: CN202320745875.9U
Authority: CN
Inventors: 赵国栋; 强寿松; 王景伟; 尚佳城
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-11-24
Anticipated expiration: 2033-03-31

Abstract

The utility model provides a sound production device, wherein a welding pad is arranged on a shell of the sound production device, a magnetic circuit system and a vibration system are fixed on the shell and are opposite to each other, the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, at least two groups of centering support pieces are arranged on the voice coil and are arranged at intervals along the vibrating direction of the vibrating diaphragm, and the at least two groups of centering support pieces comprise a first centering support piece and a second centering support piece; the voice coil is characterized in that a conductive connecting piece is arranged between the first centering support piece and the voice coil, the first centering support piece is provided with a first conductive part, a second conductive part and a third conductive part which are sequentially connected, the first conductive part is electrically connected with the voice coil through the conductive connecting piece, the third conductive part is fixed on the shell and electrically connected with the bonding pad, and the first conductive part, the second conductive part and the third conductive part are located in the same plane. The sound generating device has good acoustic performance and high reliability.

Description

Sounding device

Technical Field

The utility model relates to the technical field of electroacoustic products, in particular to a sound generating device.

Background

With the rapid development of technology, the popularity of audio devices is increasing. In audio devices, a speaker is a commonly used electronic component, which is mainly used for playing audio signals.

The speaker includes: the vibration system comprises a vibrating diaphragm, a voice coil and a damper, wherein the damper is used for inhibiting the swing of the voice coil when the displacement of the voice coil is relatively large; however, the elastic wave is a fiber product and cannot conduct electricity, so that a nylon wire is additionally added to connect a voice coil with a power supply, the nylon wire is a flexible wire, and automatic assembly is difficult to use along the wire track; meanwhile, a certain space is reserved between the elastic wave and the vibrating diaphragm for the wire to be routed, so that the height of the product is increased, and the space utilization rate is reduced.

Disclosure of Invention

The utility model aims to provide a sound generating device, which aims to reduce the height of the sound generating device and improve the reliability of the sound generating device. The sound generating device of the utility model comprises

A shell, wherein a bonding pad is arranged on the shell;

the magnetic circuit system is fixed on the shell;

the vibration system is fixed on the shell and is opposite to the magnetic circuit system, the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, at least two groups of centering support pieces are arranged on the voice coil and are arranged at intervals along the vibrating direction of the vibrating diaphragm, and the at least two groups of centering support pieces comprise a first centering support piece and a second centering support piece; wherein the method comprises the steps of

The voice coil comprises a shell, a voice coil body, a first centering support piece, a second centering support piece, a third centering support piece, a first conductive part, a second conductive part and a third conductive part, wherein the first centering support piece is provided with the first conductive part, the second conductive part and the third conductive part which are sequentially connected, the first conductive part is electrically connected with the voice coil through the conductive connection piece, the third conductive part is fixed on the shell and electrically connected with the bonding pad, and the first conductive part, the second conductive part and the third conductive part are positioned in the same plane.

In an embodiment, the first centering support piece is a strip-shaped structure, the first centering support piece extends along the circumference of the voice coil, the first centering support piece comprises a plurality of first centering support pieces, the plurality of first centering support pieces are arranged at intervals along the circumference of the voice coil, and the plurality of first centering support pieces are located in the same plane.

In an embodiment, the voice coil is cylindrical, and the second conductive portion extends along a circumferential direction of the voice coil.

In an embodiment, the number of the first centering support pieces is four, and the four first centering support pieces are equally spaced in the circumferential direction of the voice coil.

In an embodiment, the first conductive portion of one of the first centering tabs is opposite to and spaced apart from the third conductive portion of another of the first centering tabs adjacent thereto.

In an embodiment, the second conductive portion includes a first conductive segment connected to the first conductive portion, a third conductive segment connected to the third conductive portion, and a second conductive segment connecting the first conductive segment and the third conductive segment, the second conductive segment having a width smaller than the widths of the first conductive segment and the third conductive segment.

In one embodiment, the conductive connection member is a metal sheet.

In one embodiment, the conductive connection is L-shaped.

In an embodiment, the conductive connecting piece includes a first connecting portion and a second connecting portion that are disposed at an included angle, the first connecting portion is connected with the first conductive portion, the second connecting portion is connected with the voice coil, and a width of the second connecting portion gradually decreases from an end adjacent to the first connecting portion to an end far away from the first connecting portion.

In an embodiment, an electrical connection part is disposed on an outer side surface of the voice coil corresponding to the conductive connection part, and the second connection part is welded to the electrical connection part.

In an embodiment, the second centering support has a first fixing portion and a second fixing portion, the first fixing portion is connected to the voice coil, the second fixing portion is fixed on the housing, a connecting arm is disposed between the first fixing portion and the second fixing portion, and the connecting arm is in a wave shape.

In an embodiment, the second centering support is formed from any one of a fiber, cotton, a blend, or a metallic material.

In an embodiment, the second centering support has a first fixing portion and a second fixing portion, the first fixing portion is connected to the voice coil, the second fixing portion is fixed on the housing, a planar elastic member is disposed between the first fixing portion and the second fixing portion, the planar elastic member extends from the first fixing portion to the second fixing portion in a bending manner, and the second centering support is formed by integrally winding a metal wire.

In an embodiment, the second centering support includes a plurality of second centering support pieces, and the plurality of second centering support pieces are disposed opposite to the plurality of first centering support pieces.

In an embodiment, the second centering support piece is provided with a first fixing portion, a middle portion and a second fixing portion which are sequentially connected, the first fixing portion, the middle portion and the second fixing portion are located in the same plane, a second connecting piece is arranged between the second centering support piece and the voice coil, the first fixing portion is connected to the voice coil through the second connecting piece, and the second fixing portion is fixed on the housing.

In an embodiment, the second centering support is in a strip structure, and the second centering support extends along the circumferential direction of the voice coil and is opposite to the extending direction of the first centering support.

In an embodiment, the second centering support piece includes a plurality of second centering support pieces, and the plurality of second centering support pieces are located in the same plane.

In an embodiment, the conductive connecting piece and the second connecting piece are opposite to each other along the vibration direction of the vibrating diaphragm.

In an embodiment, the first positioning support sheet includes a base material layer, conductive layers disposed on two sides of the base material layer, a covering film layer disposed on a surface of the two conductive layers away from the base material layer, and a reinforcing layer disposed on a surface of the covering film layer away from the conductive layers.

In an embodiment, the conductive layer is a copper layer, and the material of the substrate layer and the covering film layer is PI; the material of the reinforcing layer is any one of PI, PEN, PET, PEI.

In an embodiment, a damping glue layer is arranged between the reinforcing layer and the covering film layer. In an embodiment, the magnetic circuit system comprises a magnetic bowl and a magnetic assembly arranged on the magnetic bowl, the magnetic bowl is provided with a bottom wall and a side wall surrounding the periphery of the bottom wall, the side wall is provided with a first avoidance notch, and the first avoidance notch is used for avoiding the conductive connecting piece and/or the first conductive part.

In an embodiment, the shell includes the bottom plate and locates the peripheral curb plate of bottom plate, the bottom plate has the through-hole, magnetic circuit combine in the bottom plate, be equipped with the second on the bottom plate and dodge the breach, the second dodge the breach with the through-hole intercommunication is used for dodging first centering piece.

In one embodiment, the vibration displacement of the voice coil is 1mm-15mm.

Compared with the related technology, the sound generating device has the beneficial effects that:

the sound production device adopts the first centering support sheet with the conductive function, the first centering support sheet is a plane centering support sheet, the connection between the voice coil and an external circuit is realized through the centering support sheet, the nylon wire in the traditional large horn structure is eliminated, the line-following space is not required to be reserved for the nylon wire, and the height of the sound production device is reduced; the second centering support piece is further adopted to adjust the amplitude of the voice coil, inhibit the swing of the voice coil and improve the reliability of the sounding device.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 3 is a block diagram of a portion of the vibration system components of the sound emitting device of FIG. 2;

FIG. 4 is a block diagram of a portion of the components of a sound emitting device according to yet another embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a sound generating apparatus according to another embodiment of the present utility model;

FIG. 6 is a block diagram of a portion of the vibration system assembly of the sound emitting device of FIG. 5;

FIG. 7 is a block diagram of a portion of the vibrating system assembly of a sound emitting device in accordance with one embodiment of the present utility model;

FIG. 8 is a block diagram of a portion of the vibrating system assembly of a sound emitting device in accordance with one embodiment of the present utility model;

FIG. 9 is a block diagram of a first spacer according to an embodiment of the present utility model;

FIG. 10 is a block diagram of a conductive connector according to an embodiment of the present utility model;

fig. 11 is a plan view of the conductive connector of fig. 10.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Sounding device	233	Third conductive part
10	Outer casing	24	Second centering support
				11	Bonding pad	25	Conductive connecting piece
20	Vibration system	251	First connecting part
				21	Vibrating diaphragm	252	Second connecting part
22	Voice coil	26	Second connecting piece
				23	First centering support	30	Magnetic circuit system
231	First conductive part	31	Magnetic bowl
				232	Second conductive part	311	Side wall
2321	First conductive segment	312	Bottom wall
				2322	Second conductive segment	313	First avoidance gap
2323	Third conductive segment

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a number" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

As shown in fig. 1 to 11, the present utility model provides a sound generating device 100, where the sound generating device 100 includes a housing, a magnetic circuit system 30 disposed on the housing, and a vibration system 20, and the housing is provided with a bonding pad 11, the vibration system 20 includes a diaphragm 21, a voice coil 22 driving the diaphragm 21 to vibrate, and at least two sets of centering support pieces, the at least two sets of centering support pieces are disposed at intervals along a vibration direction of the diaphragm 21, and the at least two sets of centering support pieces include a first centering support piece 23 and a second centering support piece 24. Wherein, a conductive connector 25 is disposed between the first centering support 23 and the voice coil 22, the first centering support 23 has a first conductive portion 231, a second conductive portion 232, and a third conductive portion 233 that are sequentially connected, the first conductive portion 231 is electrically connected with the voice coil 22 through the conductive connector 25, the third conductive portion 233 is fixed on the housing and electrically connected with the bonding pad 11, and the first conductive portion 231, the second conductive portion 232, and the third conductive portion 233 are located in the same plane.

The utility model adopts the first centering support piece 23 with the conductive function, the first centering support piece 23 is provided with a first conductive part 231, a second conductive part 232 and a third conductive part 233 which are sequentially connected, and the first conductive part 231, the second conductive part 232 and the third conductive part 233 are positioned in the same plane, namely the first centering support piece 23 is a plane centering support piece. The conductive connecting piece 25 is arranged between the first centering support piece 23 and the voice coil 22, the voice coil 22 and an external circuit are connected through the first centering support piece 23 and the conductive connecting piece 25, so that a nylon wire in a traditional large horn structure is omitted, a wire-following space is not required to be reserved for the nylon wire, and the height of the sound generating device 100 is reduced; meanwhile, the nylon yarn line-following process is canceled, and the assembly efficiency of the sound generating device 100 is improved; further, the second centering support 24 can adjust the amplitude of the voice coil 22, suppress the wobble of the voice coil 22, and improve the reliability of the sound generating apparatus 100.

It is understood that the voice coil 22 includes a cylindrical frame and a coil wound around the frame, a through hole is provided at the center of the diaphragm 21, the frame is disposed in the through hole and combined with the diaphragm 21, and a dust cap is disposed on the frame to prevent external impurities from entering the sound generating device 100 and affecting the acoustic performance of the sound generating device 100. This is a conventional structure of a speaker and is not discussed in detail herein.

In one embodiment, the first centering support 23 has a strip structure, the first centering support 23 extends along the circumference of the voice coil 22, the first centering support 23 includes a plurality of first centering supports 23 arranged at intervals along the circumference of the voice coil 22, and the plurality of first centering supports 23 are located in the same plane. In this embodiment, the first centering support 23 is configured as a strip structure, and the plurality of first centering support 23 are spaced apart from each other in the circumferential direction of the voice coil 22, so that the strip structure is more material-saving compared with the annular centering support in the conventional structure. Further, the plurality of first centering support pieces 23 are located in the same plane, which reduces the space occupied by the first centering support pieces 23 in the height direction, and is beneficial to reducing the height of the sound generating device 100.

As a specific embodiment, the voice coil 22 has a cylindrical shape, and the second conductive portion 232 extends along the circumferential direction of the voice coil 22. The second conductive portion 232 extends along the circumference of the voice coil 22, so that the length of the second conductive portion 232 can be increased, the stress of the second conductive portion 232 is reduced, and the deformation resistance of the second conductive portion 232 is improved.

In a specific embodiment, the voice coil 22 is cylindrical, and four first centering support pieces 23 are provided, and the four first centering support pieces 23 are equally spaced in the circumferential direction of the voice coil 22. I.e. each first centering support 23 is disposed 90 ° apart, which is more advantageous for balancing the support of the voice coil 22. It can be understood that four bonding pads 11 are correspondingly disposed on the basin stand, and the four bonding pads 11 are disposed opposite to the third conductive portion 233 and electrically connected to the third conductive portion 233. In assembly, the first centering support 23 and the voice coil 22 may be assembled together and then assembled with the housing. The four third conductive parts 233 and the four bonding pads 11 are cooperatively arranged, and any one of the third conductive parts 233 and any one of the bonding pads 11 can be cooperatively connected to realize electrical conduction during assembly, so that the assembly process can be simplified.

In one embodiment, the first conductive portion 231 of one first centering pad 23 is opposite to and spaced apart from the third conductive portion 233 of another first centering pad 23 adjacent thereto. As can be appreciated, the first conductive portion 231 of one first centering pad 23 is opposite to the third conductive portion 233 of another adjacent first centering pad 23 in the horizontal direction, so that the length of the second conductive portion 232 can be increased to the maximum extent, interference between the first conductive portion 231 and the third conductive portion 233 is avoided, and the reliability of the vibration system 20 is improved.

In one embodiment, the second conductive portion 232 includes a first conductive segment 2321 connected to the first conductive portion 231, a third conductive segment 2323 connected to the third conductive portion 233, and a second conductive segment 2322 connecting the first conductive segment 2321 and the third conductive segment 2323, the width of the second conductive segment 2322 being smaller than the width of the first conductive segment 2321 and the third conductive segment 2323. The narrower width of the second conductive segment 2322 may reduce stress of the second conductive portion 232, and improve the deformation resistance of the second conductive portion 232.

In one embodiment, the conductive connecting member 25 is a metal sheet. The metal sheet has good conductive performance and strength, and can electrically connect the voice coil 22 and the first conductive part 231 stably. The metal sheet may be soldered to the voice coil 22 or the first conductive portion 231, or may be bonded by a conductive adhesive.

In one embodiment, the conductive connecting member 25 is L-shaped, or the conductive connecting member 25 includes a first connecting portion 251 and a second connecting portion 252 disposed at an angle, the first connecting portion 251 is connected to the first conductive portion 231, the second connecting portion 252 is connected to the voice coil 22, and the width of the second connecting portion 252 gradually decreases from one end adjacent to the first connecting portion 251 to one end far from the first connecting portion 251. That is, the width of the second connecting portion 252 is tapered, which is beneficial to reducing the slot avoidance of the magnetic circuit system 30 to the conductive connecting piece 25 and improving the utilization rate of the magnetic circuit system 30 when being assembled with the magnetic circuit system 30 in a matching way.

In one embodiment, the outer surface of the voice coil 22 is provided with an electrical connection portion (not shown) corresponding to the conductive connection member 25, and the second connection portion 25 is soldered to the electrical connection portion.

In one embodiment, the second centering support 24 has a first fixing portion and a second fixing portion, the first fixing portion is connected to the voice coil 22, the second fixing portion is fixed on the housing, and a connecting arm is disposed between the first fixing portion and the second fixing portion, and the connecting arm is in a wave shape. The second centering support 24 may be a spring wave, and it is understood that, for convenience in implementation, the second centering support 24 may be disposed above the first centering support 23 (near one side of the diaphragm 21), so that the magnetic circuit 30 does not need to slot and avoid for the second centering support 24, and the utilization rate of the magnetic circuit 30 is improved.

As a specific embodiment, the second centering tabs 24 are formed from any one of fiber, cotton, blend, or metallic materials.

In one embodiment, the second centering pad 24 has a first fixing portion and a second fixing portion, the first fixing portion is connected to the voice coil 22, the second fixing portion is fixed on the housing, and a planar elastic member is disposed between the first fixing portion and the second fixing portion. The second centering support 24 can adjust the amplitude of the voice coil 22, suppress the wobble of the voice coil 22, and improve the reliability of the acoustic device 100. As a specific embodiment, the second centering support 24 is formed by integrally winding a metal wire, and the metal winding process is simple and convenient to implement.

As a specific embodiment, the second centering support 24 includes a plurality of second centering support 24 disposed opposite to the plurality of first centering support 23. The second centering support pieces 24 and the first centering support pieces 23 are opposite to each other in the vibration direction of the vibrating diaphragm 21, the magnetic circuit system 30 does not need to slot and avoid for the second centering support pieces 24, and the utilization rate of the magnetic circuit system 30 is improved.

In an embodiment, the second centering support 24 has a first fixing portion, a middle portion and a second fixing portion, which are sequentially connected, the first fixing portion, the middle portion and the second fixing portion are located in the same plane, a second connecting piece 26 is disposed between the second centering support 24 and the voice coil 22, the first fixing portion is connected to the voice coil 22 through the second connecting piece 26, and the second fixing portion is fixed on the housing. The second centering support 24 is a planar centering support, reducing the space occupied in the height direction of the sound emitting device 100. It will be appreciated that the second connector 26 may or may not be electrically conductive and primarily functions to connect the second centering spider 24 to the voice coil 22. The second centering support 24 may be disposed below the first centering support 23 (on the side away from the diaphragm 21), and the second fixing portion may be fixed to the side of the frame away from the third conductive portion 233.

As a specific embodiment, the second centering support 24 has a bar-shaped structure, and the second centering support 24 extends along the circumferential direction of the voice coil 22 and is opposite to the extending direction of the first centering support 23. Specifically, the second centering support piece has the same bar-shaped structure as the first centering support piece 23, and the extending direction of the voice coil 22 is opposite to the extending direction of the first centering support piece 23, so that the torsion force of the first centering support piece 23 can be balanced, and the voice coil 22 is prevented from rotating in the vibration process.

As a specific embodiment, the second centering support 24 includes a plurality of second centering support 24 disposed opposite to the plurality of first centering support 23. The second centering support 24 is a plurality of spaced strip-shaped support, which saves materials compared with the traditional annular centering support. Further, the intermediate portion extends in the circumferential direction of the voice coil 22, and the second centering support pieces 24 are disposed at intervals in the circumferential direction of the voice coil, the extending direction 24 being opposite to the extending direction of the first centering support pieces 23.

As a specific embodiment, the plurality of second centering tabs 24 lie in the same plane. The second centering tabs 24 are located in the same plane, reducing the space occupied in the height direction of the sound emitting device 100, which is beneficial to reducing the height of the sound emitting device 100.

As a specific embodiment, the conductive connection member 25 and the second connection member 26 are disposed opposite to each other in the vibration direction of the diaphragm 21. In this embodiment, the conductive connecting piece 25 and the second connecting piece 26 are arranged opposite to each other, the magnetic circuit system 30 does not need to additionally provide an avoidance space for the second connecting piece 26, so that the slotting rate of the magnetic circuit system 30 is saved, and the utilization rate of the magnetic circuit system 30 is improved.

In one embodiment, the first centering support 23 includes a substrate layer, conductive layers disposed on two sides of the substrate layer, a covering film layer disposed on a surface of the two conductive layers away from the substrate layer, and a reinforcing layer disposed on a surface of the covering film layer away from the conductive layers. Conductive layers are arranged on two sides of the substrate layer, so that the conductive reliability of the first positioning support piece 23 is improved.

In one embodiment, the conductive layer is a copper layer, the material of the base material layer and the cover film layer is PI, and the material of the reinforcing layer is any one of PI, PEN, PET, PEI. As one specific embodiment, the reinforcing layer may be made of PI (polyimide), which has light weight, good bending property and high reliability, and can play a good role in reinforcing and maintain the deformation resistance of the first positioning support piece 23.

As a specific embodiment, a damping glue layer is arranged between the reinforcing layer and the cover film layer. Optionally, the loss factor of the damping adhesive layer is 0-1.5, and the loss factor of the damping adhesive layer is in the range of 0-1.5, so that the damping performance of the damping adhesive layer can be improved, the performance of the first positioning support piece 23 is further improved, the resonance of the sound generating device 100 is reduced, and the acoustic performance of the sound generating device 100 is improved.

Alternatively, the dissipation factor of the damping gel layer may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, without limitation herein.

Further, the thickness of the damping adhesive layer can be selected to be 0.015 mm-0.1 mm. Alternatively, the thickness of the damping gel layer is 0.015mm, 0.03mm, 0.05mm, 0.08mm, 0.1mm, etc., without limitation. The die storage energy of the damping adhesive layer is 0-2Mpa, so that the first centering support piece 23 has better compliance, the deformation resistance of the first centering support piece 23 is improved, and the centering performance of the first centering support piece is improved.

In this embodiment, the damping gel may be an acrylic gel. Damping glue is arranged between the reinforcing layer and the covering film layer, and energy of resonance of the first positioning support piece 23 is absorbed by the damping glue, so that the resonance of the voice coil 22 is reduced; moreover, the reinforcing layer and the covering film layer have moment, and the first positioning support piece 23 has large elongation at break and is not easy to crack.

In an embodiment, the magnetic circuit system 30 is provided with a first avoidance gap 313, and the first avoidance gap 313 is used for avoiding the conductive connecting piece 25 and/or the first conductive portion 231, so as to improve the vibration reliability of the vibration system 20. Specifically, the magnetic circuit system 30 includes a magnetic bowl 31 and a magnetic assembly disposed in the magnetic bowl 31. The magnetic bowl 31 has a bottom wall 312 and a side wall 311 provided at the periphery of the bottom wall 312, and a magnetic gap for accommodating the voice coil 22 is formed between the side wall 311 and the magnetic assembly. The side wall 311 is provided with a first avoidance notch 313, and the first avoidance notch 313 is arranged along the vibration direction of the diaphragm 21 and extends from the end surface of the side wall 311 away from the diaphragm 21 to the bottom wall 312.

In one embodiment, a second avoidance notch is formed on the housing, and the second avoidance notch is used for avoiding the first centering support 23 and/or the second centering support 24. Specifically, the casing includes a bottom plate and a side plate disposed at the periphery of the bottom plate, the bottom plate has a through hole, and one end near the through hole extends to have a supporting wall fixed with the magnetic circuit system 30. The second avoidance notch is arranged on the bottom plate and communicated with the through hole, and is used for avoiding the first positioning support piece 23.

In one embodiment, the vibration displacement of the voice coil 22 is 1mm-15mm. The vibration displacement of the voice coil 22 refers to a stable displacement during normal operation of the sound generating apparatus 100, and does not include a case where the displacement of the voice coil 22 is suddenly changed when the voice coil 22 receives an abnormal current or other abnormal conditions of the sound generating apparatus 100 occur. When the vibration displacement of the voice coil 22 is smaller than 1mm, that is, when the vibration displacement of the voice coil 22 is smaller, the acoustic device 100 is a micro acoustic device 100. In the micro-sound generating device 100, electrical connection between the voice coil 22 and an external circuit is generally achieved by drawing a lead wire of the voice coil 22 to a conductive member. In the utility model, the vibration displacement of the voice coil 22 is 1mm-15mm, which means that the sound generating device 100 is a big loudspeaker, and after the first positioning support piece 23 replaces the nylon wire and the elastic thread, the height of the sound generating device 100 can be reduced, and the stability of the sound generating device 100 can be improved.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A sound generating apparatus, comprising

A shell, wherein a bonding pad is arranged on the shell;

the magnetic circuit system is fixed on the shell;

2. The sound generating apparatus of claim 1, wherein the first centering struts are in a bar-shaped structure, the first centering struts extend along a circumference of the voice coil, the first centering struts include a plurality of first centering struts arranged at intervals along the circumference of the voice coil, and the plurality of first centering struts are located in a same plane.

3. The sound generating apparatus according to claim 2, wherein the voice coil is cylindrical, and the second conductive portion extends in a circumferential direction of the voice coil; and/or

The number of the first centering support pieces is four, and the four first centering support pieces are distributed in the circumference of the voice coil at equal intervals.

4. The sound emitting apparatus of claim 2, wherein the first conductive portion of one of the first centering tabs is directly opposite to and spaced from the third conductive portion of the other of the first centering tabs adjacent thereto.

5. The sound emitting device of claim 1, wherein the second conductive portion comprises a first conductive segment connected to the first conductive portion, a third conductive segment connected to the third conductive portion, and a second conductive segment connecting the first conductive segment and the third conductive segment, the second conductive segment having a width that is less than the widths of the first conductive segment and the third conductive segment.

6. The sound generating apparatus of claim 1, wherein the conductive connector is a metal sheet; and/or, the conductive connecting piece is L-shaped;

and/or the conductive connecting piece comprises a first connecting part and a second connecting part which are arranged at an included angle, wherein the first connecting part is connected with the first conductive part, the second connecting part is connected with the voice coil, and the width of the second connecting part gradually decreases from one end adjacent to the first connecting part to one end far away from the first connecting part;

and/or, the outer side surface of the voice coil is provided with an electric connection part corresponding to the conductive connection part, and the second connection part is welded and connected with the electric connection part.

7. The sound generating apparatus of claim 1, wherein the second centering clip has a first fixing portion and a second fixing portion, the first fixing portion being connected to the voice coil, the second fixing portion being fixed to the housing, a connecting arm being provided between the first fixing portion and the second fixing portion, the connecting arm being in a wave shape; and/or

The second centering support is formed by any one of fiber, cotton cloth, blending or metal materials.

8. The sound generating apparatus according to claim 1, wherein the second centering support has a first fixing portion and a second fixing portion, the first fixing portion is connected to the voice coil, the second fixing portion is fixed to the housing, a planar elastic member is provided between the first fixing portion and the second fixing portion, the planar elastic member extends from the first fixing portion to the second fixing portion in a bending manner, and the second centering support is integrally wound with a metal wire; and/or

The second centering support piece comprises a plurality of second centering support pieces, and the second centering support pieces and the first centering support pieces are oppositely arranged.

9. The sound generating apparatus as recited in claim 2, wherein the second centering pad has a first fixing portion, a middle portion and a second fixing portion which are sequentially connected, the first fixing portion, the middle portion and the second fixing portion are located in the same plane, a second connecting member is disposed between the second centering pad and the voice coil, the first fixing portion is connected to the voice coil through the second connecting member, and the second fixing portion is fixed on the housing.

10. The sound generating apparatus according to claim 9, wherein the second centering support is a bar-shaped structure, and the second centering support extends in a circumferential direction of the voice coil and is opposite to an extending direction of the first centering support; and/or

The second centering support pieces comprise a plurality of second centering support pieces, and the second centering support pieces are oppositely arranged with the first centering support pieces; and/or

The second centering support pieces comprise a plurality of second centering support pieces, and the second centering support pieces are positioned in the same plane; and/or

Along the vibration direction of the vibrating diaphragm, the conductive connecting piece and the second connecting piece are arranged opposite to each other.

11. The sound generating apparatus of claim 1, wherein the first centering piece comprises a base layer, conductive layers disposed on two sides of the base layer, a cover film layer disposed on a surface of the two conductive layers away from the base layer, and a reinforcing layer disposed on a surface of the cover film layer away from the conductive layers.

12. The sound generating apparatus of claim 11, wherein the conductive layer is a copper layer, and the substrate layer and the cover film layer are PI;

the material of the reinforcing layer is any one of PI, PEN, PET, PEI; and/or

A damping adhesive layer is arranged between the reinforcing layer and the covering film layer.

13. The sound generating device according to claim 1, wherein the magnetic circuit system comprises a magnetic bowl and a magnetic assembly arranged on the magnetic bowl, the magnetic bowl is provided with a bottom wall and a side wall surrounding the periphery of the bottom wall, the side wall is provided with a first avoidance notch, and the first avoidance notch is used for avoiding the conductive connecting piece and/or the first conductive part; and/or

The shell comprises a bottom plate and side plates arranged on the periphery of the bottom plate, the bottom plate is provided with a through hole, the magnetic circuit system is combined with the bottom plate, a second avoidance notch is arranged on the bottom plate, and the second avoidance notch is communicated with the through hole and used for avoiding the first positioning support piece.

14. The sound generating apparatus according to any of claims 1 to 13, wherein the vibration displacement of the voice coil is 1mm to 15mm.