CN219536284U

CN219536284U - Sound producing device and electronic equipment

Info

Publication number: CN219536284U
Application number: CN202221992973.4U
Authority: CN
Inventors: 蔡晓东; 郎贤忠; 刘松
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-08-15
Anticipated expiration: 2032-07-29
Also published as: CN219068354U; CN219068353U

Abstract

The utility model discloses a sound generating device and electronic equipment, wherein the sound generating device comprises a shell, a magnetic circuit system and a vibration system, the shell is provided with a conductive insert, the conductive insert is used for being connected with an external circuit, the magnetic circuit system is connected with the shell, the magnetic circuit system is provided with a magnetic gap, the vibration system comprises a vibrating diaphragm and a voice coil, the vibrating diaphragm is connected with the shell and is opposite to the magnetic circuit system, one side of the vibrating diaphragm, facing the magnetic circuit system, is provided with a conductive layer, one end of the voice coil is connected with the vibrating diaphragm and is electrically connected with the conductive layer, the other end of the voice coil is suspended in the magnetic gap, and one end of the conductive layer, far away from the voice coil, is connected with the conductive insert. The sounding device not only simplifies the wiring mode of the voice coil lead, but also effectively avoids the suspension arrangement of the voice coil lead and improves the connection stability of the voice coil lead.

Description

Sound producing device and electronic equipment

Technical Field

The present utility model relates to electroacoustic conversion technology, and in particular, to a sound generating device and an electronic device using the sound generating device.

Background

With the development of portable consumer electronics market, the micro-sound generator is widely applied, and with the multifunctional and miniaturized design of portable terminal electronics, the requirements on the vibroacoustic performance of the micro-sound generator are raised.

The sound production device generally comprises a magnetic circuit system and a vibration system, wherein the vibration system comprises a vibrating diaphragm and a voice coil combined on one side of the vibrating diaphragm, and a lead wire of the voice coil is normally communicated with an external circuit through a centering support piece or other conductive pieces, so that the electrified voice coil can drive the vibrating diaphragm to vibrate under the action of the magnetic circuit system, and further sound production of the sound production device is realized. However, the leads of the voice coil are usually conductive by using a suspended lead mode, and a wire breakage risk is likely to occur.

Disclosure of Invention

The utility model mainly aims to provide a sound generating device and electronic equipment, and aims to provide the sound generating device which can effectively prevent the voice coil leads from being broken.

To achieve the above object, the present utility model provides a sound emitting device including:

the shell is provided with a conductive insert which is used for being connected with an external circuit;

the magnetic circuit system is connected to the shell and is provided with a magnetic gap; a kind of electronic device with high-pressure air-conditioning system

The vibration system comprises a vibrating diaphragm and a voice coil, wherein the vibrating diaphragm is connected with the shell and is opposite to the magnetic circuit system, a conductive layer is arranged on one side of the vibrating diaphragm, which faces the magnetic circuit system, one end of the voice coil is connected with the vibrating diaphragm and is electrically connected with the conductive layer, the other end of the voice coil is suspended in the magnetic gap, and one end of the conductive layer, which is far away from the voice coil, is connected with the conductive insert.

In one embodiment, the vibrating diaphragm includes a central portion, a ring portion disposed around the central portion, and a fixing portion disposed outside the ring portion, where the fixing portion is connected to the housing;

the conductive layer comprises a first conductive part, a connecting part and a second conductive part which are connected, wherein the second conductive part is arranged on the fixed part and is connected with the conductive insert, the connecting part is arranged on the ring folding part, and the first conductive part is arranged on the central part and is electrically connected with a lead wire of the voice coil.

In one embodiment, the first conductive portion is bonded to a lead of the voice coil through a conductive adhesive so as to electrically connect the voice coil to the conductive layer.

In an embodiment, the conductive layer further includes an insulating glue layer, and the insulating glue layer covers the leads of the voice coil and the conductive glue.

In an embodiment, the central portion is provided with a clearance groove adjacent to the first conductive portion, the voice coil is connected to the central portion, and a lead wire of the voice coil passes through the clearance groove and is connected with the first conductive portion;

and/or the central part is provided with a hollowed-out hole, the vibration system further comprises a ball top, and the ball top is connected to the central part and covers the hollowed-out hole.

In one embodiment, the voice coil has an input lead and an output lead, and the housing is provided with two of the conductive inserts;

the conducting layer comprises an input conducting layer and an output conducting layer which are arranged on the vibrating diaphragm, one end of the input conducting layer is electrically connected with the input lead, the other end of the input conducting layer is electrically connected with one conductive insert, one end of the output conducting layer is electrically connected with the output lead, and the other end of the output conducting layer is electrically connected with the other conductive insert.

In one embodiment, the conductive layer is coated on one side of the diaphragm facing the magnetic circuit system;

and/or, the conductive insert is integrally injection molded with the housing;

and/or the vibrating diaphragm is square, and the conducting layer is arranged at the corner of the vibrating diaphragm.

In an embodiment, the vibration system further includes a centering support including an outer fixing portion, an inner fixing portion, and an elastic portion connected between the outer fixing portion and the inner fixing portion, the outer fixing portion being connected with the housing, the inner fixing portion being connected with the voice coil.

In an embodiment, the elastic portion includes two elastic arms and a bending portion connected to the two elastic arms, the bending portion and the two elastic arms enclose to form an elastic space, and one ends of the two elastic arms away from the bending portion are respectively connected to the outer fixing portion and the inner fixing portion;

and/or, the centering support piece is made of PI material;

and/or the thickness of the centering support sheet is greater than or equal to 0.0125mm;

and/or the centering support piece comprises a plurality of centering support pieces, the magnetic circuit system is provided with a plurality of avoidance notches communicated with the magnetic gap, and each centering support piece is correspondingly arranged with one avoidance notch.

In one embodiment, the magnetic circuit system includes:

a magnetic yoke;

a central magnetic circuit portion provided on a side of the magnetic yoke facing the diaphragm; a kind of electronic device with high-pressure air-conditioning system

And the side magnetic circuit part is arranged on one side of the magnetic conduction yoke facing the vibrating diaphragm and is connected with the shell, and the side magnetic circuit part is positioned on the outer side of the central magnetic circuit part and is spaced from the central magnetic circuit part to form the magnetic gap in a surrounding way.

In one embodiment, the side magnetic circuit part comprises a plurality of side magnetic circuit parts, wherein the plurality of side magnetic circuit parts are arranged around the central magnetic circuit part and are spaced from the central magnetic circuit part to form the magnetic gap, and two adjacent side magnetic circuit parts are spaced to form a avoidance gap communicated with the magnetic gap;

and/or the central magnetic circuit part and the side magnetic circuit part are magnetized along the vertical direction, and the magnetizing directions of the central magnetic circuit part and the side magnetic circuit part are opposite;

and/or the magnetic yoke is provided with an air vent, the sound generating device further comprises a metal net, and the metal net is provided with one side of the magnetic yoke, which is opposite to the shell, and covers the air vent.

The utility model also provides electronic equipment, which comprises an equipment shell and the sounding device, wherein the sounding device is arranged on the equipment shell.

According to the sound production device, the magnetic circuit system and the vibration system are arranged on the shell, so that the installation stability of the magnetic circuit system and the vibration system is improved, the conductive layer is arranged on one side of the vibrating diaphragm facing the magnetic circuit system, so that the voice coil is connected with the vibrating diaphragm, meanwhile, the lead wire of the voice coil is electrically connected with the conductive layer, the suspension arrangement of the voice coil lead wire is effectively avoided, the conductive insert is arranged on the shell, and therefore the conductive insert is connected with one end, far away from the voice coil, of the conductive layer, an external circuit can be led into the voice coil through the conductive insert and the conductive layer, so that the voice coil is conducted with the external circuit through the conductive layer on the vibrating diaphragm, the wiring mode of the voice coil lead wire is simplified, the connection stability of the voice coil lead wire is effectively improved, and meanwhile, the disconnection risk of the voice coil lead wire is avoided.

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 schematic diagram of a sound generating apparatus according to an embodiment of the present utility model;

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

FIG. 3 is an exploded view of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram illustrating a portion of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a vibration system according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating a structure of a diaphragm and a conductive insert connected together according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a diaphragm according to an embodiment of the present utility model;

FIG. 8 is a schematic partial cross-sectional view of a conductive layer connected to a lead of a voice coil according to an embodiment of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Sounding device	3117	Insulating adhesive layer
1	Outer casing	312	Central portion
				11	Conductive insert	3121	Hollow hole
2	Magnetic circuit system	3122	Position avoiding groove
				21	Magnetic gap	313	Folded ring part
22	Magnetic conductive yoke	314	Fixing part
				221	Air vent	32	Voice coil
23	Central magnetic circuit part	321	Input lead
				24	Side magnetic circuit part	322	Output lead
241	Avoidance gap	33	Centering support piece
				3	Vibration system	331	External fixing part
31	Vibrating diaphragm	332	Internal fixing part
				311	Conductive layer	333	Elastic part
3111	Input conductive layer	334	Elastic arm
				3112	Output conductive layer	335	Bending part
3113	First conductive part	336	Elastic space
				3114	Connecting part	34	Ball top
3115	Second conductive part	4	Metal net
				3116	Conductive adhesive

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

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.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

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 addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The sound production device generally comprises a magnetic circuit system and a vibration system, wherein the vibration system comprises a vibrating diaphragm and a voice coil combined on one side of the vibrating diaphragm, and a lead wire of the voice coil is normally communicated with an external circuit through a centering support piece or other conductive pieces, so that the electrified voice coil can drive the vibrating diaphragm to vibrate under the action of the magnetic circuit system, and further sound production of the sound production device is realized. However, the lead wire of voice coil loudspeaker voice coil adopts unsettled lead wire mode to realize electrically conductive generally, takes place the broken string risk easily, still leads to the compliance of vibrating diaphragm book ring simultaneously, reduces the vibration effect of vibrating diaphragm.

Based on the above concepts and problems, the present utility model proposes a sound generating apparatus 100. It is understood that the sound generating apparatus 100 is applied to an electronic device, which may be a mobile phone, a sound device, a computer, a headset, a watch, or a television, and the like, and is not limited herein.

Referring to fig. 1 to 8, in an embodiment of the present utility model, the sound generating apparatus 100 includes a housing 1, a magnetic circuit 2 and a vibration system 3, wherein the housing 1 is provided with a conductive insert 11, the conductive insert 11 is used for being connected with an external circuit, the magnetic circuit 2 is connected to the housing 1, the magnetic circuit 2 is provided with a magnetic gap 21, the vibration system 3 includes a vibrating diaphragm 31 and a voice coil 32, the vibrating diaphragm 31 is connected with the housing 1 and is opposite to the magnetic circuit 2, one side of the vibrating diaphragm 31 facing the magnetic circuit 2 is provided with a conductive layer 311, one end of the voice coil 32 is connected with the vibrating diaphragm 31 and is electrically connected with the conductive layer 311, the other end of the voice coil 32 is suspended in the magnetic gap 21, and one end of the conductive layer 311 far from the voice coil 32 is connected with the conductive insert 11.

In the present embodiment, the housing 1 is used for mounting, fixing, supporting and protecting the components of the vibration system 3, the magnetic circuit system 2, and the like, that is, the housing 1 provides a mounting base for the components of the vibration system 3, the magnetic circuit system 2, and the like. It should be understood that the housing 1 may be a mounting shell, a housing or a box with a mounting cavity, that is, the housing 1 defines a receiving space, which is not limited herein. Optionally, the casing 1 has a rectangular structure, the casing 1 has two opposite long sides and two short sides, two ends of the short sides are respectively connected with the two long sides, and two ends of the long sides are respectively connected with the two short sides, so that the casing 1 defines an accommodating space.

It will be appreciated that when the housing 1 is a metal piece, the magnetic circuit 2 and the housing 1 are fixed by adhesion or welding. In another embodiment, when the housing 1 is formed by injection molding, the side magnetic conduction plate of the magnetic circuit system 2 is first injection molded in the housing 1 as an insert, or the magnetic circuit system 2 and the housing 1 are fixed by adhesion, and then the other parts are fixed by adhesion, which is not limited herein.

In the present embodiment, the magnetic circuit system 2 is disposed in the accommodating space and is connected to the housing 1. The magnetic circuit 2 is provided with the magnetic gap 21, the vibration system 3 includes vibrating diaphragm 31 and connect in the voice coil 32 of vibrating diaphragm 31, the one end and the vibrating diaphragm 31 of voice coil 32 are connected, the other end of voice coil 32 is hung in the magnetic gap 21, through being equipped with conducting layer 311 in the one side of vibrating diaphragm 31 towards the magnetic circuit 2, and set up conductive insert 11 on shell 1, make the one end of conducting layer 311 be connected with the lead wire of voice coil 32, the other end of conducting layer 311 is connected with conductive insert 11 on the shell 1, thereby utilize conductive insert 11 to introduce the electric current of external circuit into the voice coil 32 through conductive layer 311, utilize voice coil 32 to transmit the electric energy to in the magnetic gap 21 of magnetic circuit 2, make the magnetic field that magnetic circuit 2 produced change electric energy into mechanical energy, thereby make voice coil 32 vibrate, and drive vibrating diaphragm 31 and realize vibration sound production, further change mechanical energy into sound energy.

It can be understood that after the voice coil 32 disposed in the magnetic gap 21 receives the externally-changed ac signal transmitted from the conductive insert 11 and the conductive layer 311, the voice coil is driven by the magnetic force of the magnetic circuit system 2 to reciprocate to cut the magnetic force lines, so as to drive the diaphragm 31 of the vibration system 3 to vibrate and sound, thereby effectively improving the BL value of the sound generating device 100.

In the present embodiment, the conductive layer 311 can realize conduction so that the voice coil 32 is connected to an external circuit through the conductive layer 311. It is understood that the conductive layer 311 may be disposed on the diaphragm 31 by bonding, or may be disposed on the diaphragm 31 by spraying. Optionally, the conductive layer 311 is coated on a side of the diaphragm 31 facing the magnetic circuit system 2, for example, a coating structure is formed after curing by a film coating method, which is not limited herein.

It is understood that the conductive layer 311 is made of a material capable of conducting electricity. Of course, the conductive layer 311 may be formed by doping or mixing or disposing a conductive material into the substrate, which is not limited herein. In the present embodiment, the substrate of the conductive layer 311 may be epoxy, polyurethane, silicone, acrylate, or other materials, and the conductive material may be conductive silver, and the utility model is not limited thereto.

In the present embodiment, by providing the conductive insert 11 in the case 1, the external circuit is electrically connected to the conductive layer 311 through the conductive insert 11, thereby realizing conduction between the voice coil 32 and the external circuit. Optionally, the conductive insert 11 is injection molded integrally with the housing 1.

It will be appreciated that the conductive insert 11 is provided with inner and outer bond pads for solder connection to an external circuit, the inner bond pad being solder connected or bonded to the conductive layer 311, without limitation.

According to the sound production device 100, the magnetic circuit system 2 and the vibration system 3 are arranged on the shell 1, so that the installation stability of the magnetic circuit system 2 and the vibration system 3 is improved, the conductive layer 311 is arranged on one side of the diaphragm 31 facing the magnetic circuit system 2, so that the voice coil 32 is connected with the diaphragm 31, meanwhile, the lead wire of the voice coil 32 is electrically connected with the conductive layer 311, the suspension arrangement of the lead wire of the voice coil 32 is effectively avoided, the conductive insert 11 is arranged on the shell 1, and therefore, the conductive insert 11 is connected with one end, far away from the voice coil 32, of the conductive layer 311, and an external circuit can be introduced into the voice coil 32 through the conductive insert 11 and the conductive layer 311, so that the voice coil 32 is conducted with the external circuit through the conductive layer 311 on the diaphragm 31, the wiring mode of the lead wire of the voice coil 32 is simplified, the connection stability of the lead wire of the voice coil 32 is effectively improved, and the wire breakage risk of the voice coil 32 is avoided.

In an embodiment, the diaphragm 31 includes a central portion 312, a ring portion 313 disposed around the central portion 312, and a fixing portion 314 disposed outside the ring portion 313, where the fixing portion 314 is connected to the housing 1.

In the present embodiment, as shown in fig. 1 to 3 and fig. 5 to 7, the central portion 312, the annular portion 313 and the fixing portion 314 of the diaphragm 31 are integrally formed. The folded ring portion 313 is disposed around the central portion 312 and between the central portion 312 and the fixing portion 314, and the folded ring portion 313 may have an upward or downward convex structure. The diaphragm 31 is fixedly connected with the housing 1 of the sound generating device 100 through the fixing portion 314, so as to improve the connection stability and the sealing performance of the housing 1 and the diaphragm 31.

It is understood that, in order to increase the effective vibration area of the diaphragm 31, the fixing portion 314 may be formed by extending the outer side of the hinge portion 313 downward or upward, so that the fixing portion 314 is fixedly connected to the inner side wall or the outer side wall of the housing 1.

In one embodiment, as shown in fig. 5 to 7, the conductive layer 311 includes a first conductive portion 3113, a connection portion 3114 and a second conductive portion 3115 connected to each other, the second conductive portion 3115 is disposed on the fixing portion 314 and connected to the conductive insert 11, the connection portion 3114 is disposed on the collar portion 313, and the first conductive portion 3113 is disposed on the central portion 312 and electrically connected to the lead of the voice coil 32.

In the present embodiment, the conductive layer 311 extends from the center portion 312 to the fixing portion 314 of the diaphragm 31, thereby ensuring that the conductive layer 311 connects and conducts the voice coil 32 to an external circuit. It will be appreciated that the first conductive portion 3113 of the conductive layer 311 is disposed at the central portion 312 and is electrically connected to the input lead 321 of the voice coil 32 or the output lead 322 of the voice coil 32, and the second conductive portion 3115 of the conductive layer 311 is disposed at the fixing portion 314, so as to facilitate connection with the conductive insert 11 on the housing 1, thereby connecting an external circuit using the conductive insert 11. The first conductive portion 3113 and the second conductive portion 3115 are connected to be conductive via a connection portion 3114 provided to the folded-ring portion 313.

Alternatively, the diaphragm 31 is disposed in a square shape, and the conductive layer 311 may be disposed at a corner portion of the diaphragm 31, however, the conductive layer 311 may also be disposed at a major axis side or a minor axis side of the diaphragm 31, which is not limited herein. In the present embodiment, the conductive layer 311 has excellent compliance, and does not affect the compliance of the folded ring of the diaphragm 31. The voice coil 32 is fixed to the conductive layer 311 by an adhesive process to achieve electrical communication.

In one embodiment, as shown in fig. 8, the first conductive portion 3113 is bonded to the lead of the voice coil 32 by a conductive adhesive 3116 so as to electrically connect the voice coil 32 to the conductive layer 311. It can be understood that bonding the first conductive portion 3113 to the lead of the voice coil 32 by the conductive adhesive 3116 not only improves the connection stability between the lead of the voice coil 32 and the conductive layer 311, but also ensures good conductive communication between the lead of the voice coil 32 and the conductive layer 311.

In one embodiment, as shown in fig. 8, the conductive layer 311 further includes an insulating adhesive layer 3117, and the insulating adhesive layer 3117 covers the leads of the voice coil 32 and the conductive adhesive 3116. It can be appreciated that the arrangement of the insulating glue layer 3117 not only improves the connection stability, but also achieves insulation from the outside.

In this embodiment, the insulating adhesive layer 3117 is coated on the leads of the voice coil 32 and the conductive adhesive 3116 to cover the leads of the voice coil 32 and the conductive adhesive 3116, so as to not only improve connection stability, but also avoid the leads of the voice coil 32 and the leads of the voice coil 32 from affecting the vibration effect and the sound production effect of the diaphragm 31 during the vibration process of the diaphragm 31.

In one embodiment, as shown in fig. 1 to 3, the central portion 312 is provided with a hollow hole 3121, and the vibration system 3 further includes a dome 34, where the dome 34 is connected to the central portion 312 and covers the hollow hole 3121.

In the present embodiment, the hollow hole 3121 is disposed at the central portion 312 of the diaphragm 31, so that the overall weight of the diaphragm 31 can be effectively reduced. Optionally, a hollow hole 3121 is disposed at a central position of the central portion 312, and the hollow hole 3121 may be a through hole or a hollow hole or an opening. Alternatively, the hollow hole 3121 may be one or more, which is not limited herein.

In order to strengthen the structural strength of the vibrating diaphragm 31, the vibrating diaphragm 31 is prevented from being subjected to shrinkage and deformation in the vibration process, the ball top 34 is arranged at the central part 312 of the vibrating diaphragm 31, the ball top 34 is connected to the central part 312 and covers the hollowed-out hole 3121, so that the structural strength of the vibrating diaphragm 31 is strengthened on one hand, external impurities or dust can be prevented from entering the sounding device 100 through the hollowed-out hole 3121 on the other hand, and meanwhile, the vibrating diaphragm 31 is prevented from being subjected to shrinkage and deformation in the vibration process, so that THD distortion of the sounding device 100 is reduced, and the audio effect is improved.

In order to further achieve the adhesion of the lead wire of the voice coil 32 to the surface of the diaphragm 31 and to avoid the influence of the lead wire of the voice coil 32 on the vibration effect of the diaphragm 31 during the vibration process of the voice coil 32 and the diaphragm 31. In one embodiment, the central portion 312 is provided with a clearance groove 3122 adjacent to the first conductive portion 3113, the voice coil 32 is connected to the central portion 312, and the lead wire of the voice coil 32 passes through the clearance groove 3122 and is connected to the first conductive portion 3113.

In this embodiment, as shown in fig. 7, the avoidance groove 3122 on the diaphragm 31 is disposed corresponding to the voice coil 32 and is disposed corresponding to the first conductive portion 3113 of the connection conductive layer 311. It will be appreciated that the voice coil 32 is in an annular configuration, and the voice coil 32 has two major axis sides and two minor axis sides connected end to end, that is, the two minor axis sides of the voice coil 32 are opposite and spaced, and the two major axis sides are opposite and spaced, such that the major axis sides and the minor axis sides are connected end to form a directional annular structure.

It is understood that, when the voice coil 32 has the input lead 321 and the output lead 322, and the input lead 321 or the output lead 322 of the voice coil 32 is located at the inner ring of the voice coil 32, in order to facilitate the lead routing of the voice coil 32, the voice coil 32 is connected to the central portion 312 of the diaphragm 31 by providing the clearance groove 3122 on the diaphragm 31, so that the input lead 321 or the output lead 322 of the voice coil 32 is conveniently connected to the first conductive portion 3113 by passing through the clearance groove 3122.

Alternatively, the avoidance slot 3122 may be a groove structure or a through slot structure, which is not limited herein.

In one embodiment, the voice coil 32 has an input lead 321 and an output lead 322, and the housing 1 is provided with two conductive inserts 11; the conductive layer 311 includes an input conductive layer 3111 and an output conductive layer 3112 disposed on the diaphragm 31, one end of the input conductive layer 3111 is electrically connected to the input lead 321, the other end of the input conductive layer 3111 is electrically connected to one conductive insert 11, one end of the output conductive layer 3112 is electrically connected to the output lead 322, and the other end of the output conductive layer 3112 is electrically connected to the other conductive insert 11.

In this embodiment, as shown in fig. 5 to 7, by providing the conductive layer 311 as the input conductive layer 3111 and the output conductive layer 3112 so that the input conductive layer 3111 is electrically connected to the input lead 321 of the voice coil 32, it is ensured that the input conductive layer 3111 can introduce an external circuit into the voice coil 32, and the output conductive layer 3112 is electrically connected to the output lead 322 of the voice coil 32, so that it is ensured that the output conductive layer 3112 introduces a current sequentially passing through the voice coil 32 into the external circuit, to achieve current inflow and outflow within the voice coil 32.

Alternatively, the diaphragm 31 is square, the conductive layer 311 includes a plurality of conductive layers 311, and the plurality of conductive layers 311 are disposed at corners of the diaphragm 31. It will be appreciated that the conductive layer 311 is provided at the corners of the diaphragm 31, thereby facilitating the lead arrangement of the voice coil 32 and ensuring the uniformity of the vibration of the diaphragm 31.

In an embodiment, the vibration system 3 further includes a centering pad 33, where the centering pad 33 includes an outer fixing portion 331, an inner fixing portion 332, and an elastic portion 333 connected between the outer fixing portion 331 and the inner fixing portion 332, the outer fixing portion 331 is connected to the housing 1, and the inner fixing portion 332 is connected to the voice coil 32.

In this embodiment, as shown in fig. 2 and 3, by providing the centering support 33, the outer fixing portion 331 of the centering support 33 is connected to the housing 1, and the inner fixing portion 332 of the centering support 33 is connected to the voice coil 32, so that the centering support 33 is used to balance and stabilize the vibration of the voice coil 32 driving the diaphragm 31, and the voice coil 32 is prevented from driving the diaphragm 31 to swing or polarization.

It can be appreciated that by providing the conductive layer 311 on the diaphragm 31, the lead wire of the voice coil 32 is connected and conducted with an external circuit through the conductive layer 311, so that the use of the centering support 33 to realize the conductive function can be avoided, and the manufacturing process and flow of the centering support 33 can be simplified.

In this embodiment, the centering support 33 is made of PI material, so that the centering support 33 can be made thinner, so as to save material and installation space, thereby effectively increasing the volume of the magnetic circuit system 2 and improving the BL value of the product. Alternatively, the centering support 33 may take a one-layer structure. Of course, in other embodiments, the centering support 33 may also be formed as a composite structure using a multi-layer structure, which is not limited herein. Optionally, the thickness of the centering tabs 33 is greater than or equal to 0.0125mm.

In order to further increase the elongation of the centering support 33, in an embodiment, as shown in fig. 3, the elastic portion 333 includes two elastic arms 334 and a bending portion 335 connecting the two elastic arms 334, the bending portion 335 encloses with the two elastic arms 334 to form an elastic space 336, and one ends of the two elastic arms 334 away from the bending portion 335 are respectively connected with the outer fixing portion 331 and the inner fixing portion 332.

It will be appreciated that such an arrangement effectively increases the arm length of the elastic portion 333, and improves the stretchability and elastic deformation performance of the centering strut 33. It should be noted that, when the centering support 33 is in the static state, the elastic arm 334 of the centering support 33 may be made very short, so that more space is available for enlarging the size of the magnet in the magnetic circuit system 2 and improving the product performance.

Alternatively, the centering tabs 33 may be composed of one or more layers of material, and when one layer of material is used for the centering tabs 33, the matching material hardness and thickness may be selected according to the length of the elastic portion 333; in comparison, when the centering support 33 is made of multiple layers of materials, each layer of material may be made of a material having a smaller elastic modulus. The flexible design of the centering support 33 is beneficial to selecting a design scheme with light weight of the centering support 33 and favorable to the performance of products.

In one embodiment, as shown in fig. 3, the centering support 33 includes a plurality of centering support pieces, the magnetic circuit system 2 is provided with a plurality of avoidance notches 241 communicating with the magnetic gap 21, and each centering support piece 33 is disposed corresponding to one avoidance notch 241.

In this embodiment, the centering support 33 includes an outer fixing portion 331, an inner fixing portion 332, and an elastic portion 333 connected between the outer fixing portion 331 and the inner fixing portion 332, the outer fixing portion 331 is connected to the housing 1, and the inner fixing portion 332 is connected to a side of the voice coil 32 facing away from the diaphragm 31.

It can be appreciated that the centering support 33 may be a large integral structure, the outer fixing portion 331 may be an annular structure, and is connected to the housing 1, the inner fixing portion 332 is connected to an end of the voice coil 322 of the outer voice coil 322 opposite to the diaphragm 31, and the inner fixing portion 332 is connected to the outer fixing portion 331 through the elastic portion 333, so that the inner fixing portion 332 drives the elastic portion 333 to deform when the voice coil 32 vibrates, so as to avoid the voice coil 32 driving the diaphragm 31 to swing or polarize.

Of course, in other embodiments, the centering support 33 may be a plurality of small parts, for example, when the centering support 33 includes two or four centering support 33, the two centering support 33 are symmetrically disposed, and the two centering support 33 are symmetrically disposed and connected to two short shafts or two long shafts of the housing 1, which is not limited herein. When the number of the centering support pieces 33 is four, the four centering support pieces 33 are provided at four corner positions of the housing 1 in a distributed manner, so that symmetry is ensured and balance of vibration of the voice coil 32 of the sound generating apparatus 100 is ensured. Optionally, the centering support 33 includes four centering support pieces 33, and the four centering support pieces 33 are disposed corresponding to the four avoidance notches 241 of the magnetic circuit system 2.

In one embodiment, as shown in fig. 1 to 4, the magnetic circuit system 2 includes a magnetic yoke 22, a central magnetic circuit portion 23, and a side magnetic circuit portion 24, wherein the central magnetic circuit portion 23 is disposed on a side of the magnetic yoke 22 facing the diaphragm 31, the side magnetic circuit portion 24 is disposed on a side of the magnetic yoke 22 facing the diaphragm 31 and is connected to the housing 1, and the side magnetic circuit portion 24 is disposed outside the central magnetic circuit portion 23 and is spaced from the central magnetic circuit portion 23 to enclose the magnetic gap 21.

In this embodiment, the magnetic yoke 22 may be a magnetic plate or a magnetic basin frame, which is not limited herein. The magnetic yoke 22 serves to support and mount the fixed center magnetic circuit portion 23 and the side magnetic circuit portions 24. The magnetic circuit system 2 is fixedly connected with the housing 1 via a side magnetic circuit portion 24. Alternatively, the magnetically permeable yoke 22 is adhesively connected to the central magnetic circuit portion 23 and the side magnetic circuit portion 24, and the side magnetic circuit portion 24 is adhesively connected to the housing 1.

Alternatively, the center magnetic circuit portion 23 includes a center magnet and a center washer that are stacked, the center magnet being disposed between the center washer and the magnet yoke 22, and the side magnetic circuit portion 24 includes side magnets and Bian Huasi, the side magnets being disposed between Bian Huasi and the magnet yoke 22. It will be appreciated that Bian Huasi of the side magnetic circuit portion 24 can be adhesively attached to the housing 1. Alternatively, bian Huasi is an integral structure with the housing 1.

It will be appreciated that the central washer and Bian Huasi may alternatively be of magnetically permeable construction. The central magnet and the central washer have the same structural outline, and the central magnet and the central washer can be plate-shaped structures or annular structures, and are not limited herein. The side magnets and Bian Huasi have the same structural outline, and the side magnets and Bian Huasi may be alternatively plate-like structures or ring-like structures, which are not limited herein.

Of course, the side magnetic circuit portion 24 may be of an annular structure, with the annular side magnetic circuit portion 24 surrounding the central magnetic circuit portion 23 and being spaced from the central magnetic circuit portion 23 to form an annular magnetic gap 21. Alternatively, the side magnetic circuit portion 24 may have a circular ring shape, or a polygonal shape such as a quadrangle, a pentagon, a hexagon, or the like.

In one embodiment, as shown in fig. 3 and 4, the side magnetic circuit portion 24 includes a plurality of side magnetic circuit portions 24 disposed around the center magnetic circuit portion 23 and spaced apart from the center magnetic circuit portion 23 to form the magnetic gap 21, and adjacent two of the side magnetic circuit portions 24 are spaced apart to form the escape notch 241 communicating with the magnetic gap 21.

In one embodiment, the central magnetic circuit portion 23 and the side magnetic circuit portion 24 are magnetized in the vertical direction, and the magnetizing directions of the central magnetic circuit portion 23 and the side magnetic circuit portion 24 are opposite.

In this embodiment, the center magnet of the center magnetic circuit portion 23 and the side magnet of the side magnetic circuit portion 24 are magnetized in the vertical direction, and the magnetizing directions of the center magnet and the side magnet are opposite, so that the nonlinear performance of BL can be optimized.

In one embodiment, as shown in fig. 2 to 4, the air holes 221 are formed in the magnetic yoke 22, and the sound generating device 100 further includes a metal mesh 4, where the metal mesh 4 is disposed on a side of the magnetic yoke 22 facing away from the housing 1, and covers the air holes 221.

In this embodiment, the vibrating diaphragm 31, the housing 1 and the magnetic circuit 2 enclose a vibrating space, and in order to balance the pressure inside and outside the vibrating space of the sound generating device 100, the air holes 221 are formed in the magnetic yoke 22, so that the air holes 221 are communicated with the external atmosphere, and when the voice coil 32 drives the vibrating diaphragm 31 to vibrate, the air holes 221 can balance the atmospheric pressure inside and outside the vibrating space, so as to ensure the acoustic performance of the sound generating device 100.

It will be appreciated that by providing the metal mesh 4, the metal mesh 4 is provided with a side of the magnetic yoke 22 facing away from the housing 1 and covers the ventilation holes 221. Thus, when the sound generating device 100 is installed in an electronic apparatus, the sound absorbing material can be filled to further improve the sound generating effect and the acoustic performance. The metal mesh 4 effectively prevents sound absorbing materials from entering the sound generating device 100 through the air holes 221 to influence the sound generating effect of the sound generating device 100.

The utility model also provides electronic equipment, which comprises an equipment shell and the sounding device 100, wherein the sounding device 100 is arranged on the equipment shell. The specific structure of the sound generating device 100 refers to the foregoing embodiments, and because the electronic device adopts all the technical solutions of all the foregoing embodiments, the sound generating device at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

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

Claims

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

2. The sound generating apparatus according to claim 1, wherein the diaphragm includes a central portion, a folded ring portion provided around the central portion, and a fixing portion provided outside the folded ring portion, the fixing portion being connected to the housing;

3. The sound generating apparatus of claim 2, wherein the first conductive portion is bonded to a lead of the voice coil by a conductive paste to electrically connect the voice coil to the conductive layer.

4. The sound emitting apparatus of claim 3 wherein the conductive layer further comprises an insulating glue layer covering the leads of the voice coil and the conductive glue.

5. The sound generating apparatus according to claim 2, wherein the central portion is provided with a space-avoiding groove adjacent to the first conductive portion, the voice coil is connected to the central portion, and a lead wire of the voice coil passes through the space-avoiding groove and is connected to the first conductive portion;

6. The sound emitting apparatus of claim 1 wherein the voice coil has an input lead and an output lead, the housing having two of the conductive inserts;

7. The sound generating apparatus of claim 1, wherein the conductive layer is coated on a side of the diaphragm facing the magnetic circuit system;

and/or, the conductive insert is integrally injection molded with the housing;

8. The sound emitting apparatus of any one of claims 1-7, wherein the vibration system further comprises a centering clip comprising an outer fixing portion, an inner fixing portion, and an elastic portion connected between the outer fixing portion and the inner fixing portion, the outer fixing portion being connected to the housing, the inner fixing portion being connected to the voice coil.

9. The sound generating apparatus according to claim 8, wherein the elastic portion includes two elastic arms and a bending portion connecting the two elastic arms, the bending portion and the two elastic arms enclose to form an elastic space, and one ends of the two elastic arms away from the bending portion are respectively connected with the outer fixing portion and the inner fixing portion;

and/or, the centering support piece is made of PI material;

10. The sound generating apparatus according to any one of claims 1 to 7, wherein the magnetic circuit system includes:

a magnetic yoke;

11. The sound emitting device of claim 10, wherein the side magnetic circuit portion comprises a plurality of side magnetic circuit portions disposed around the central magnetic circuit portion and spaced from the central magnetic circuit portion to form the magnetic gap, adjacent two of the side magnetic circuit portions being spaced to form a relief gap in communication with the magnetic gap;

and/or the magnetic yoke is provided with an air vent, the sound generating device further comprises a metal net, and the metal net is arranged on one side of the magnetic yoke, which is opposite to the shell, and covers the air vent.

12. An electronic device comprising a device housing and a sound emitting apparatus according to any one of claims 1 to 11, the sound emitting apparatus being provided to the device housing.