CN111818433A

CN111818433A - Loudspeaker

Info

Publication number: CN111818433A
Application number: CN202010898696.XA
Authority: CN
Inventors: 王兴龙; 郭翔; 韩志磊; 刘琦琦
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-10-23
Anticipated expiration: 2040-08-31
Also published as: CN111818433B

Abstract

The invention discloses a loudspeaker, which comprises a shell, a vibration system, a magnetic circuit system and an elastic supporting piece, wherein the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, and the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit structure and a side magnetic circuit structure which are arranged above the magnetic yoke; the elastic supporting piece is connected with the vibration system and is arranged opposite to the vibrating diaphragm up and down to form elastic support for the vibration system; the shell and the side magnetic structure are provided with a gap, a conductive framework is connected between the vibrating diaphragm and the elastic support piece, the conductive framework comprises a side wall arranged between the vibrating diaphragm and the elastic support piece, the side wall is located in the gap, the conductive framework is provided with a first bonding pad and a second bonding pad, the first bonding pad is connected with a voice coil wire of the voice coil, and the second bonding pad is connected with an external circuit. According to the invention, the conduction between the voice coil and the external circuit can be realized through the conductive framework, the conduction difficulty is reduced, the magnetic circuit system is not required to be interrupted for avoiding, the volume of the magnetic circuit system is not limited, and the acoustic performance of the product is improved.

Description

Loudspeaker

Technical Field

The invention relates to the technical field of acoustic devices, in particular to a loudspeaker.

Background

A speaker is a transducer for converting an electrical signal into an acoustic signal, and is widely used in electronic products such as mobile phones, computers, earphones, and the like. The micro-speaker generally comprises a vibration system, a magnetic circuit system and a support system, wherein the vibration system comprises an upper vibration system and a lower vibration system, the upper vibration system comprises a voice coil and a vibrating diaphragm, the lower vibration system comprises an elastic support member, and the upper vibration system and the lower vibration system are respectively arranged at the upper part and the lower part of a product structure. Due to the above structural characteristics of the speaker space, the difficulty of conduction between the voice coil of the speaker and an external circuit is large.

Disclosure of Invention

The invention mainly aims to provide a loudspeaker, and aims to solve the problem that in the prior art, a voice coil of the loudspeaker is difficult to conduct with an external bonding pad.

In order to achieve the above object, the present invention provides a speaker, which includes a housing, a vibration system, a magnetic circuit system, and an elastic supporting member, wherein the vibration system includes a diaphragm and a voice coil for driving the diaphragm to vibrate, and the magnetic circuit system includes a magnetic yoke, a central magnetic circuit structure and a side magnetic circuit structure, which are disposed above the magnetic yoke; the elastic supporting piece is connected with the vibration system and is arranged opposite to the vibrating diaphragm up and down to form elastic support for the vibration system;

the shell with have the clearance between the limit magnetic structure, the vibrating diaphragm with be connected with electrically conductive skeleton between the elastic support piece, electrically conductive skeleton is including locating the vibrating diaphragm with lateral wall between the elastic support piece, the lateral wall is located in the clearance, electrically conductive skeleton is provided with first pad and second pad, first pad with the voice coil wire connection of voice coil loudspeaker voice coil, the second pad is connected with external circuit.

Preferably, the conductive framework comprises a top wall, a bottom wall and a side wall connected between the top wall and the bottom wall, the top wall is provided with the first bonding pad, the bottom wall or the side wall is provided with the second bonding pad, the top wall is connected with the vibrating diaphragm, and the bottom wall is connected with the elastic support part.

Preferably, the top wall is connected between the diaphragm and the voice coil.

Preferably, the conductive framework is a metal product, and the first pad and the second pad are formed on part of the conductive framework; alternatively, the first and second electrodes may be,

the conducting framework is a non-metal product, the conducting layer is laid on the surface of the conducting framework or the conducting layer is embedded in the conducting framework, and the first bonding pad and the second bonding pad are formed on the conducting layer.

Preferably, the conductive framework is a metal product, the surface of the conductive framework is covered with an insulating material layer, and the first bonding pad and the second bonding pad are exposed out of the insulating material layer.

Preferably, the conductive framework further comprises a reinforcing rib connected between the side wall and the top wall;

and/or the presence of a gas in the atmosphere,

the side wall is provided with lightening holes.

Preferably, the number of the conductive frameworks is two, and the two conductive frameworks are symmetrically arranged; the number of the elastic supporting pieces is two, and the two elastic supporting pieces and the two conductive frameworks are arranged in a one-to-one correspondence manner;

the inner end of the elastic supporting piece is connected with the corresponding conductive framework, and the outer end of the elastic supporting piece is connected with the shell or the magnetic circuit system;

two electrically conductive skeleton formula structure or split type structure as an organic whole.

Preferably, the speaker further includes a conductive member fixed to the housing, and the second pad is connected to the conductive member by a conductive wire.

Preferably, the conductive wire is a chinlon wire, an enameled wire, a multi-turn enameled wire stranded wire, a conductive spring or a metal shrapnel.

Preferably, the conductive member is a conductive support fixed to the bottom of the housing, an inner pad is disposed on the inner side of the conductive support, an outer pad is disposed on the outer side of the conductive support, the second pad is connected to the inner pad through a conductive wire, and the outer pad is connected to an external circuit.

Preferably, the conductive support piece is of an integrated annular structure or a split structure;

and/or, the conductive support chip is FPCB.

Preferably, the speaker includes a pair of opposite long sides and a pair of opposite short sides, the gap includes a short track corresponding to the short sides and a long track corresponding to the long sides, and the conductive skeleton is arranged corresponding to the short tracks;

one of the internal bonding pad and the second bonding pad is arranged corresponding to the long track, the other bonding pad is arranged corresponding to the short track, the conductive wire extends along the connecting corner of the short track, the short track and the long track, and two ends of the conductive wire are respectively connected with the internal bonding pad and the second bonding pad;

alternatively, the first and second electrodes may be,

the inner bonding pad and the second bonding pad are arranged corresponding to the connecting corner of the long track and the short track, one end of the conductive wire is connected with the second bonding pad, and the other end of the conductive wire is bent after extending for a section along the short track and reversely extends to be connected with the inner bonding pad.

Preferably, the number of the conductive lines is two, and the two conductive lines are in an axisymmetric structure along the middle line of the two short sides; or the two conductive wires are in an axisymmetric structure along the central lines of the two long sides; or the two conducting wires are arranged diagonally and are symmetrical to each other;

or the number of the conductive wires is four, and two of the four conductive wires are symmetrically arranged with the other two conductive wires.

Preferably, the elastic support member comprises a balance diaphragm;

the balance vibrating diaphragm comprises a first connecting portion, a first folding ring portion and a second connecting portion, the first connecting portion is bonded to the bottom of the conductive framework, the second connecting portion is bonded to the conductive support piece, the first folding ring portion corresponds to the gap, and the conductive wire is arranged above the first folding ring portion or bonded to the first folding ring portion at intervals.

Preferably, the vibrating diaphragm includes central part, second flange portion and the fixed part that sets gradually from inside to outside, the top of electrically conductive skeleton bond in central part, second flange portion corresponds first flange portion sets up, the fixed part certainly second flange portion downwardly extending forms and fixes the outside of shell.

Preferably, the side magnetic structure is a ring-shaped structure.

Preferably, the side magnetic circuit structure comprises an annular side magnet and an annular side magnetic conduction plate arranged above the annular side magnet;

the edge magnetic conduction plate and the shell are of an integrally formed structure, or the edge magnetic conduction plate and the shell are of a split structure which is connected with each other.

Preferably, the casing is a metal casing, and the surface of the side magnetic conduction plate and/or the casing is covered with an insulating material layer.

In the technical scheme of the invention, the loudspeaker also comprises the conductive framework, and when the voice coil drives the vibrating diaphragm to vibrate, the conductive framework and the elastic supporting piece which are connected with the vibrating diaphragm synchronously vibrate, so that the anti-deflection performance of a vibration system is effectively improved, and the acoustic performance of a product is further improved. A gap is formed between the shell and the side magnetic structure, the side wall of the conductive framework is located in the gap, vibration is facilitated, and the gap provides a vibration space for the conductive framework. The conductive framework is provided with a first bonding pad and a second bonding pad, the first bonding pad is connected with a voice coil wire of the voice coil, and the second bonding pad is connected with an external circuit, so that the voice coil and the external circuit can be conducted through the conductive framework, the structure is ingenious, and the conduction difficulty is reduced. In addition, in the process of conducting the voice coil and an external circuit through the conductive framework, a magnetic circuit system does not need to be interrupted for avoiding, the size of the magnetic circuit system is not limited, and the acoustic performance of the product is improved to the greatest extent.

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 view of a speaker assembly at a viewing angle according to an embodiment of the present invention;

FIG. 2 is a schematic view of a speaker assembly from another perspective according to an embodiment of the present invention;

FIG. 3 is an exploded view of a speaker according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a speaker according to an embodiment of the present invention;

FIG. 5 is a perspective view of a missile framework in a loudspeaker according to an embodiment of the invention;

FIG. 6 is a schematic cross-sectional view of a missile framework in a loudspeaker according to an embodiment of the invention;

fig. 7 is a schematic perspective view of a conductive framework in a speaker according to another embodiment of the present invention;

fig. 8 is a schematic perspective view of a conductive framework in a speaker according to another embodiment of the present invention;

fig. 9 is a schematic perspective view of a conductive layer laid on the surface of a conductive framework in a speaker according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of a conductive layer embedded in a conductive framework of a speaker according to an embodiment of the present invention;

fig. 11 is a schematic perspective view illustrating an integrated conductive framework of a speaker according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of a speaker with a split conductive frame according to an embodiment of the present invention;

fig. 13 is a schematic perspective view of conductive traces in a speaker according to an embodiment of the invention;

fig. 14 is a schematic perspective view of conductive traces in a speaker according to another embodiment of the present invention;

fig. 15 is a schematic perspective view of conductive traces in a speaker according to yet another embodiment of the present invention;

fig. 16 is a schematic perspective view of conductive traces in a speaker according to yet another embodiment of the present invention;

fig. 17 is a schematic perspective view of a speaker according to an embodiment of the present invention, in which a conductive wire is a conductive elastic piece;

FIG. 18 is a schematic plan view of conductive traces in a speaker according to an embodiment of the present invention;

fig. 19 is a schematic perspective view of a speaker according to an embodiment of the present invention, in which a conductive wire is bonded to a first hinge portion;

fig. 20 is a schematic cross-sectional view illustrating a conductive wire bonded to the first hinge portion in the speaker according to an embodiment of the present invention;

fig. 21 is a perspective view of a speaker with conductive wires in the same plane according to an embodiment of the present invention;

fig. 22 is a perspective view of a speaker with conductive wires in different planes according to an embodiment of the present invention;

fig. 23 is a schematic perspective view of a conductive trace when the second bonding pad is located on the sidewall of the speaker according to an embodiment of the invention;

fig. 24 is a schematic perspective view illustrating an integrated structure of a conductive support plate in a speaker according to an embodiment of the present invention;

fig. 25 is a schematic perspective view of a split-type conductive support plate of a speaker according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Loudspeaker	411	First connecting part
10	Outer casing	412	First hinge part
				20	Vibration system	413	Second connecting part
21	Vibrating diaphragm	50	Gap
				211	Center part	51	Short track
2111	Inner ring part	52	Long road
				2112	Reinforcing part	53	Corner
212	Second flange part	60	Conductive framework
				213	Fixing part	61	First bonding pad
22	Voice coil	62	Second bonding pad
				221	Voice coil wire	63	Side wall
30	Magnetic circuit system	64	Roof wall
				31	Magnetic yoke	65	Bottom wall
32	Central magnetic circuit structure	66	Conductive layer
				321	Central magnet	67	Reinforcing rib
322	Central magnetic conduction plate	68	Lightening hole
				33	Side magnetic circuit structure	70	Conductive support
331	Edge magnet	71	Internal bonding pad
				332	Edge magnetic conduction plate	72	External bonding pad
34	Magnetic gap	80	Conductive wire
				40	Elastic support	101	Short side
41	Balance diaphragm	102	Long side

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, 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 loudspeaker.

As shown in fig. 1 to 12, a speaker 100 of the present embodiment includes a housing 10, a vibration system 20, a magnetic circuit system 30, and an elastic support member 40, where the vibration system 20 includes a diaphragm 21 and a voice coil 22 for driving the diaphragm 21 to vibrate, and the magnetic circuit system 30 includes a yoke 31, a central magnetic structure 32 and a side magnetic structure 33 disposed above the yoke 31; the elastic supporting part 40 is connected with the vibration system 20 and is arranged opposite to the vibrating diaphragm 21 up and down for forming elastic support for the vibration system 20; there is clearance 50 between shell 10 and limit magnetic structure 33, is connected with electrically conductive skeleton 60 between vibrating diaphragm 21 and the elastic support piece 40, and electrically conductive skeleton 60 is including locating the lateral wall 63 between vibrating diaphragm 21 and the elastic support piece 40, and lateral wall 63 is located clearance 50, and electrically conductive skeleton 60 is provided with first pad 61 and second pad 62, and first pad 61 is connected with voice coil 22's voice coil line 221, and second pad 62 is connected with external circuit.

The side magnetic structure 33 of the present embodiment surrounds the periphery of the central magnetic structure 32 and forms a magnetic gap 34, the voice coil 22 is suspended in the magnetic gap 34, the magnetic gap 34 between the side magnetic structure 33 and the central magnetic structure 32 generates a magnetic field, and the voice coil 22 performs a reciprocating magnetic line-cutting motion in the magnetic gap 34 to drive the diaphragm 21 to vibrate, thereby driving the air to sound and completing the energy conversion between the electricity and the sound. The diaphragm 21 is disposed on the top of the housing 10, the elastic supporting member 40 is disposed below the diaphragm 21, and the elastic supporting member 40 is connected to the vibration system 20 and elastically supports the vibration system 20.

The speaker 100 of the present embodiment further includes a conductive framework 60, the conductive framework 60 is disposed between the diaphragm 21 and the elastic support member 40, specifically, the top of the conductive framework 60 is connected to the diaphragm 21, and the bottom of the conductive framework 60 is connected to the elastic support member 40. When the voice coil 22 drives the diaphragm 21 to vibrate, the conductive framework 60 connected with the diaphragm 21 and the elastic support member 40 vibrate synchronously, so that the anti-polarization performance of the vibration system 20 is effectively improved, and the acoustic performance of the product is further improved. A gap 50 is formed between the casing 10 and the side magnetic structure 33, the side wall 63 of the conductive framework 60 is located in the gap 50, so that vibration is facilitated, and the gap 50 provides a vibration space for the conductive framework 60. The conductive framework 60 is provided with a first bonding pad 61 and a second bonding pad 62, the first bonding pad 61 is connected with a voice coil wire 221 of the voice coil 22, and the second bonding pad 62 is connected with an external circuit, so that the voice coil 22 and the external circuit can be conducted through the conductive framework 60, the structure is ingenious, and the conduction difficulty is reduced. In addition, in the process of conducting the voice coil 22 and the external circuit by the conductive framework 60, the magnetic circuit system 30 does not need to be interrupted for avoiding, the volume of the magnetic circuit system 30 is not limited, and the acoustic performance of the product is improved to the greatest extent.

Further, the conductive framework 60 of the embodiment includes a top wall 64, a bottom wall 65 and the above-mentioned side wall 63 connected between the top wall 64 and the bottom wall 65, the top wall 64 is provided with a first pad 61, the bottom wall 65 or the side wall 63 is provided with a second pad 62, the top wall 64 is connected with the diaphragm 21, and the bottom wall 65 is connected with the elastic support member 40. As shown in fig. 4, a top wall 64 of the conductive bobbin 60 is connected to the bottom of the diaphragm 21, and a first land 61 extends inward from the top wall 64 to facilitate connection with a voice coil wire 221 of the voice coil 22. The resilient support 40 is attached to the bottom wall 65 of the conductive skeleton 60. In one embodiment, the second pad 62 is disposed on the bottom wall 65 of the conductive frame 60, and the second pad 62 extends outwardly from the bottom wall 65 to facilitate connection with an external circuit. In another embodiment, the second pad 62 may be further disposed on the sidewall 63 of the conductive frame 60 and attached to the outer side of the sidewall 63, so as to facilitate connection with an external circuit while improving the compactness. Further, the top wall 64 is connected between the diaphragm 21 and the voice coil 22. Specifically, the top wall 64 is bonded between the diaphragm 21 and the voice coil 22, and the voice coil 22 drives the diaphragm 21 to vibrate synchronously with the conductive bobbin 60.

As shown in fig. 3 to 8, in an embodiment, the conductive frame 60 is made of a metal material, and a first pad 61 and a second pad 62 are formed on a portion of the conductive frame 60. The conductive framework 60 made of metal has good conductivity and heat dissipation effect, and the first bonding pad 61 and the second bonding pad 62 are formed by partial structures of the conductive framework 60, so that the structure is simple, the manufacturing is easy, and the conduction of the voice coil 22 and an external circuit is realized.

In another embodiment, the conductive frame 60 is made of a non-metallic material, the conductive layer 66 is laid on the surface of the conductive frame 60 or the conductive layer 66 is embedded inside the conductive frame 60, and the first pad 61 and the second pad 62 are formed on portions of the conductive layer 66. The conductive bobbin 60 is made of a non-metal material, for example, the conductive bobbin 60 is a plastic product, in order to realize the conductivity of the conductive bobbin 60, as shown in fig. 9, a conductive layer 66 may be laid on the surface of the conductive bobbin 60, specifically, the conductive layer 66 may be formed on the surface of the conductive bobbin 60 by laser electroplating, brushing conductive silver paste or brushing conductive adhesive, the conductive layer 66 has conductivity, and a first pad 61 and a second pad 62 are formed on a portion of the conductive layer 66, so as to realize the conduction between the voice coil 22 and an external circuit. Alternatively, as shown in fig. 10, the conductive layer 66 may be formed by embedding a conductive material in the conductive bobbin 60, and the first pad 61 and the second pad 62 may be formed by a partial structure of the conductive layer 66, thereby realizing conduction between the voice coil 22 and an external circuit.

Further, in a case that the conductive frame 60 is made of a metal material, in order to avoid a short circuit, the surface of the conductive frame 60 is subjected to an insulation treatment, specifically, an insulation material layer (not shown) is covered on the surface of the conductive frame 60, and the first pad 61 and the second pad 62 are exposed out of the insulation material layer.

As shown in fig. 6, the conductive framework 60 of the present embodiment further includes a rib 67, and the rib 67 is connected between the side wall 63 and the top wall 64. The reinforcing ribs 67 can increase the strength of the side walls 63 and ensure the vibration stability of the conductive skeleton 60. As shown in fig. 5, in order to reduce the weight of the conductive skeleton 60, the side wall 63 of the conductive skeleton 60 may be further provided with lightening holes 68 to improve the vibration flexibility of the conductive skeleton 60, so that the product exerts optimal acoustic performance.

In this embodiment, the number of the conductive frameworks 60 is two, and the two conductive frameworks 60 are symmetrically arranged; the number of the elastic supporting members 40 is two, and the two elastic supporting members 40 are arranged in one-to-one correspondence with the two conductive frameworks 60. As shown in fig. 3, 4, and 13 to 23, the two conductive frames 60 are arranged in bilateral symmetry, the two elastic supporting members 40 are respectively located below the two conductive frames 60, the inner ends of the elastic supporting members 40 are connected to the corresponding conductive frames 60, and the outer ends are connected to the housing 10 or the magnetic circuit system 30, so as to assemble the conductive frames 60, the elastic supporting members 40, and the housing 10 or the magnetic circuit system 30.

The two conductive frames 60 are of an integral structure or a split structure. As shown in fig. 3 and 12, the two conductive frameworks 60 are of a split structure, and the two conductive frameworks 60 of the split structure have the advantages of easy manufacture, consumable material saving and flexible assembly. As shown in fig. 11, the two conductive frames 60 may be an integral structure, the edge regions of the two conductive frames 60 extend toward each other and are connected into a whole, the two conductive frames 60 of the integral structure can save the assembly process, improve the assembly efficiency, and have high structural stability.

In this embodiment, the speaker 100 further includes a conductive member fixed to the housing 10, and the second pad 62 is connected to the conductive member through a conductive wire 80. Specifically, a conductive member is fixed at the bottom of the housing 10, and the second pad 62 is connected to the conductive member through a conductive wire 80, so as to achieve conduction between the conductive skeleton 60 and the conductive member. The conductive wire 80 is a lead wire, an enameled wire, a multi-turn enameled wire stranded wire, a conductive spring or a metal elastic sheet. As shown in fig. 3 to 16 and 18 to 23, the conductive wire 80 is a lead wire, as shown in fig. 17, the conductive wire 80 is a metal spring, and the type of the conductive wire 80 can be flexibly selected according to actual conditions.

In this embodiment, the conductive member is a conductive support 70 fixed at the bottom of the housing 10, an inner pad 71 is disposed on the inner side of the conductive support 70, an outer pad 72 is disposed on the outer side of the conductive support 70, the second pad 62 is connected to the inner pad 71 through a conductive wire 80, and the outer pad 72 is connected to an external circuit. The conductive bobbin 60 and the conductive support 70 are electrically connected to the inner pad 71 through the second pad 62, and the outer pad 72 is connected to an external circuit, so that the voice coil 22 is electrically connected to the external circuit through the conductive bobbin 60 and the conductive support 70.

The conductive support 70 of the present embodiment is an integrated annular structure or a split structure; and/or, the conductive support 70 is a FPCB, which has the characteristics of high wiring density, light weight, small volume, few wiring errors, flexibility and elastically changeable shape, etc., and meets the use requirements of the conductive support 70. As shown in fig. 24, the conductive support 70 has an integrated annular structure, which can save assembly processes, improve assembly efficiency, and has high structural stability. As shown in fig. 25, the conductive support 70 has a split structure, and has the advantages of easy manufacture, material saving and flexible assembly.

The speaker 100 of the present embodiment includes an opposing pair of long sides 102 and an opposing pair of short sides 101, the gap 50 includes a short lane 51 corresponding to the short sides 101 and a long lane 52 corresponding to the long sides 102, and the conductive skeleton 60 is arranged corresponding to the short lane 51; one of the internal bonding pad 71 and the second bonding pad 62 is arranged corresponding to the long track 52, the other one is arranged corresponding to the short track 51, the conductive wire 80 extends along the short track 51, the connecting corner 53 of the short track 51 and the long track 52, and the two ends are respectively connected with the internal bonding pad 71 and the second bonding pad 62; or, the internal pad 71 and the second pad 62 are disposed corresponding to the connection corner 53 of the long trace 52 and the short trace 51, one end of the conductive line 80 is connected to the second pad 62, and the other end of the conductive line 80 extends along the short trace 51 for a section and then bends, and extends reversely to be connected to the internal pad 71.

Specifically, as shown in fig. 13 to 16, the second pad 62 is disposed corresponding to the short trace 51, the internal pad 71 is disposed corresponding to the long trace 52, the conductive line 80 extends along the connection corner 53 of the short trace 51, the short trace 51 and the long trace 52, and one end of the conductive line 80 is connected to the second pad 62, and the other end of the conductive line 80 is connected to the internal pad 71. It can be understood that the conductive skeleton 60 vibrates synchronously with the diaphragm 21, and the conductive support 70 is fixed on the housing 10, and the length of the conductive wire 80 needs to be long enough to meet the vibration requirement of the conductive skeleton 60, i.e., the conductive skeleton 60 is not limited by the length of the conductive wire 80. The conductive line 80 extends along the short trace 51, the connecting corner 53 of the short trace 51 and the long trace 52, so that it has a sufficient length not to interfere with the vibration of the conductive skeleton 60.

Alternatively, as shown in fig. 17 and 18, the inner pad 71 is disposed corresponding to the connecting corner 53 of the long trace 52 and the short trace 51, the second pad 62 is disposed adjacent to the inner pad 71, that is, the second pad 62 is also disposed corresponding to the connecting corner 53 of the long trace 52 and the short trace 51, one end of the conductive line 80 is connected to the second pad 62, and the other end of the conductive line 80 extends along the short trace 51 for a section, then bends, and extends reversely to be connected to the inner pad 71, so that the conductive line 80 has a sufficient length without interfering with the vibration of the conductive skeleton 60.

Further, the number of the conductive lines 80 is two, and the two conductive lines 80 are in an axisymmetric structure along the central line of the two short sides 101; alternatively, the two conductive lines 80 are in an axisymmetric structure along the center lines of the two long sides 102; or, the two conductive wires 80 are arranged diagonally and symmetrical to each other; alternatively, the number of the conductive lines 80 is four, and two of the four conductive lines 80 are symmetrically arranged with the other two conductive lines 80.

As shown in fig. 13, in one embodiment, the two conductive lines 80 are in an axisymmetric structure along the center line of the long side 102, i.e., the two conductive lines 80 are arranged in a left-right symmetry. As shown in fig. 14, in another embodiment, the two conductive lines 80 are in an axisymmetric structure along the center line of the short side 101, i.e., the two conductive lines 80 are symmetrically arranged in front of and behind each other. In yet another embodiment, as shown in fig. 15, the conductive lines 80 are diagonally arranged and symmetrical to each other. As shown in fig. 16, in still another embodiment, the number of the conductive lines 80 is four, and among the four conductive lines 80, two of the conductive lines 80 are symmetrically arranged with respect to the other two conductive lines 80, and the four conductive lines 80 are symmetrical to each other. The two conductive wires 80 or the four conductive wires 80 are symmetrical structures, which is beneficial to improving the vibration uniformity of the diaphragm 21, improving the structural stability of the loudspeaker 100 and optimizing the acoustic performance of the product.

In the present embodiment, the elastic support member 40 includes a balance diaphragm 41; the balanced diaphragm 41 includes a first connection portion 411, a first collar portion 412 and a second connection portion 413, which are sequentially disposed, the first connection portion 411 is bonded to the bottom of the conductive frame 60, specifically, the first connection portion 411 is bonded to the bottom wall 65, the second connection portion 413 is bonded to the conductive support 70 and is further fixed on the housing 10, the first collar portion 412 is disposed corresponding to the gap 50, and the conductive wire 80 is disposed above the first collar portion 412 or bonded to the first collar portion 412 at intervals.

The first connecting portion 411 of the balance diaphragm 41 of this embodiment is bonded to the bottom wall 65 of the conductive framework 60, and the second connecting portion 413 is bonded to the conductive support piece 70, so as to fix the two sides of the balance diaphragm 41, thereby facilitating the vibration of the first folding ring portion 412, and the gap 50 provides a vibration space for the first folding ring portion 412. When the loudspeaker 100 works, the vibrating diaphragm 21, the conductive framework 60 and the balance vibrating diaphragm 41 vibrate synchronously, the balance vibrating diaphragm 41 plays a role in assisting and strengthening the vibration of the vibrating diaphragm 21, the vibration performance of the vibration system 20 is effectively improved, and the acoustic performance of the product is further improved.

In this embodiment, the diaphragm 21 includes a central portion 211, a second flange portion 212 and a fixing portion 213, which are sequentially disposed from inside to outside, the top of the conductive framework 60 is adhered to the central portion 211, the second flange portion 212 is disposed corresponding to the first flange portion 412, and the fixing portion 213 extends downward from the second flange portion 212 and is formed and fixed outside the housing 10. The central portion 211 of the present embodiment includes an inner ring portion 2111 formed by extending inward from an inner edge of the second flange portion 212 and a reinforcing portion (dome) 2112 compounded on the inner ring portion 2111, and a top portion of the conductive skeleton 60 is bonded to the central portion 211, specifically, the conductive skeleton 60 is connected to both the inner ring portion 2111 and the reinforcing portion 2112. The bottom wall 65 of the conductive framework 60 is bonded with the first connecting portion 411 of the balance diaphragm 41, the voice coil 22 is located below the central portion 211 and is bonded with the top of the conductive framework 60, the fixing portion 213 is of a flanging structure, and extends downwards from the outer side of the second flanging portion 212 and is fixed on the outer side of the housing 10, so that the assembly among the diaphragm 21, the housing 10, the voice coil 22, the conductive framework 60 and the balance diaphragm 41 is realized. The voice coil 22 drives the diaphragm 21, the balance diaphragm 41, and the conductive bobbin 60 to vibrate synchronously. The first flange part 412 of the diaphragm 21 and the second flange part 212 of the balanced diaphragm 41 are correspondingly arranged, and the first flange part 412 and the second flange part 212 can form symmetrical support, so that symmetrical restoring force can be provided when the voice coil 22 vibrates, the distortion of a product is reduced, and the reliability is improved.

As shown in fig. 19 and 20, in an embodiment, the conductive wire 80 is adhered to the first collar part 412 and vibrates with the vibration of the first collar part 412. As shown in fig. 21, in another embodiment, the conductive wire 80 is disposed above the first folded loop part 412 at intervals, the conductive wire 80 is in the same plane, and the two folded segments of the conductive wire 80 are disposed in parallel. As shown in fig. 22 and 23, in another embodiment, the conductive wire 80 is disposed above the first folded loop part 412 at intervals, and the two folded sections of the conductive wire 80 are arranged up and down in the space or the conductive wire 80 is disposed in a curved shape. The wiring mode, the layout mode and the like of the conductive wire 80 can be adaptively adjusted according to the product structure, and the method is flexible and convenient.

As shown in fig. 3, the side magnetic structure 33 of the present embodiment is an annular structure, the side magnetic structure 33 of the annular structure surrounds the periphery of the central magnetic structure 32, and an annular magnetic gap 34 is formed between the side magnetic structure 33 and the central magnetic structure 32, matching with the shape of the voice coil 22, and improving the vibration stability of the voice coil 22.

Specifically, the central magnetic structure 32 includes a central magnet 321 and a central magnetic conductive plate 322 disposed above the central magnet 321, and the central magnetic conductive plate 322 can modify the magnetic force emitted from the central magnet 321. The magnetic structure 33 includes a ring-shaped edge magnet 331 and a ring-shaped edge magnetic plate 332 disposed above the ring-shaped edge magnet 331, wherein the ring-shaped edge magnetic plate 332 can modify the magnetic force generated by the ring-shaped edge magnet 331. The side magnetic conductive plate 332 and the casing 10 are integrally formed, or the side magnetic conductive plate 332 and the casing 10 are connected to each other in a split structure. As shown in fig. 3, the side magnetic plate 332 of the present embodiment and the casing 10 are integrally formed, so that the structure is compact, the assembling process and the assembling gap 50 are omitted, and the assembling error is avoided. In other embodiments, the side magnetic plate 332 and the casing 10 are connected to each other in a split structure, so that the manufacturing is convenient and the assembly manner is flexible.

Further, the casing 10 is a metal casing 10, and the edge magnetic plate 332 and/or the surface of the casing 10 are covered with an insulating material layer. The insulating material layer has insulation, so that short circuit among the shell 10, the edge magnet 331, the conductive wire 80 and the external pad 72 is prevented, and the use safety of the product is ensured.

The above description is only a preferred embodiment of the present invention, and 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 loudspeaker comprises a shell, a vibration system, a magnetic circuit system and an elastic supporting piece, wherein the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, and the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit structure and a side magnetic circuit structure which are arranged above the magnetic yoke; the elastic supporting piece is connected with the vibration system and is arranged opposite to the vibrating diaphragm up and down to form elastic support for the vibration system; it is characterized in that the preparation method is characterized in that,

2. The speaker of claim 1, wherein the conductive skeleton includes a top wall, a bottom wall, and the side wall connected between the top wall and the bottom wall, the top wall is provided with the first pad, the bottom wall or the side wall is provided with the second pad, the top wall is connected to the diaphragm, and the bottom wall is connected to the elastic support member.

3. The loudspeaker of claim 2, wherein the top wall is connected between the diaphragm and the voice coil.

4. The loudspeaker of claim 1, wherein the conductive frame is a metal material, and portions of the conductive frame form the first and second pads; alternatively, the first and second electrodes may be,

5. The speaker of claim 4, wherein the conductive frame is made of metal, and a surface of the conductive frame is covered by an insulating material layer, and the first pad and the second pad are exposed out of the insulating material layer.

6. The loudspeaker of claim 2 wherein said conductive framework further comprises ribs connected between said side walls and said top wall;

and/or the presence of a gas in the atmosphere,

the side wall is provided with lightening holes.

7. The loudspeaker of claim 1, wherein the number of said conductive frames is two, two of said conductive frames being symmetrically arranged; the number of the elastic supporting pieces is two, and the two elastic supporting pieces and the two conductive frameworks are arranged in a one-to-one correspondence manner;

8. The loudspeaker of any one of claims 1-7, further comprising a conductive member secured to the housing, the second pad being connected to the conductive member by a conductive wire.

9. The loudspeaker of claim 8, wherein the conductive wire is a tinsel wire, an enameled wire, a multi-turn enameled wire stranded wire, a conductive spring, or a metal dome.

10. The speaker of claim 8, wherein the conductive member is a conductive patch fixed to the bottom of the housing, an inner pad is disposed on an inner side of the conductive patch, an outer pad is disposed on an outer side of the conductive patch, the second pad is connected to the inner pad through a conductive wire, and the outer pad is connected to an external circuit.

11. The loudspeaker of claim 10, wherein the conductive strut is of one-piece annular or split construction;

and/or, the conductive support chip is FPCB.

12. The speaker of claim 10, wherein the speaker includes an opposing pair of long sides and an opposing pair of short sides, the gap includes a short track corresponding to a short side and a long track corresponding to a long side, the conductive skeleton is arranged corresponding to the short track;

alternatively, the first and second electrodes may be,

13. The loudspeaker in accordance with claim 12, wherein said conductive wires are two in number, two of said conductive wires being in an axisymmetric configuration along a centerline of two of said short sides; or the two conductive wires are in an axisymmetric structure along the central lines of the two long sides; or the two conducting wires are arranged diagonally and are symmetrical to each other;

14. A loudspeaker as claimed in claim 10, characterized in that the resilient support comprises a balanced diaphragm;

15. The speaker according to claim 14, wherein the diaphragm includes a central portion, a second flange portion and a fixing portion, the central portion, the second flange portion and the fixing portion are sequentially disposed from inside to outside, the top portion of the conductive frame is bonded to the central portion, the second flange portion is disposed corresponding to the first flange portion, and the fixing portion extends downward from the second flange portion and is fixed to an outside of the housing.

16. A loudspeaker according to any one of claims 1 to 7, wherein the rim magnetic structure is an annular structure.

17. The loudspeaker of claim 16, wherein the rim magnetic structure comprises a ring-shaped rim magnet and a ring-shaped rim magnetic conductive plate disposed above the ring-shaped rim magnet;

18. A loudspeaker according to claim 17, wherein the enclosure is a metal enclosure, and the edge conducting plates and/or the surface of the enclosure is/are covered with a layer of insulating material.