CN111901714B

CN111901714B - Loudspeaker monomer and electronic terminal

Info

Publication number: CN111901714B
Application number: CN202010906744.5A
Authority: CN
Inventors: 王兴龙; 王继宗; 孙立国
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2022-05-24
Anticipated expiration: 2040-08-31
Also published as: CN111901714A

Abstract

The invention discloses a loudspeaker monomer and an electronic terminal, wherein the loudspeaker monomer comprises a shell component, a magnetic circuit system, a vibration system and a balance component, the balance component comprises a centering branch piece, and the centering branch piece comprises: the elastic support part is arranged on the outer fixing part; the elastic supporting part is annular and is positioned at the inner side of the outer fixing part; the connecting section is positioned between the outer fixing part and the elastic supporting part and is connected with the outer fixing part and the elastic supporting part; the outer fixing part is connected with the shell assembly, the elastic supporting part is located in the gap and is partially connected with the support of the vibration system, and the elastic supporting part elastically deforms along with the vibration of the support. The invention aims to provide the loudspeaker single body which can effectively avoid the easy fracture of the bending part of the centering support sheet, so that the loudspeaker single body can effectively reduce the product reliability risk.

Description

Loudspeaker monomer and electronic terminal

Technical Field

The invention relates to the technical field of acoustoelectric products, in particular to a single loudspeaker and an electronic terminal applying the single loudspeaker.

Background

A speaker is an important acoustic component of a portable electronic device, is used for converting an electric signal and a sound signal, and is an energy conversion device. Currently, with continuous progress and innovation of technology, the structural design of the speaker is continuously required to be new and changed, which not only needs to satisfy the development trend of thinning, but also needs to pay more and more attention to performance optimization, and also needs to consider process simplification and cost control.

The last fixed centring disk that is provided with of free vibration system of speaker among the correlation technique to prevent that vibration system from taking place the polarization of non-vibration direction at the vibration in-process, this centring disk is for extension vibrating arm length, and the inflection of vibrating arm design is more, leads to vibrating arm inflection department stress more concentrated, causes the cracked risk aggravation of vibrating arm.

Disclosure of Invention

The invention mainly aims to provide a loudspeaker monomer and an electronic terminal, and aims to provide the loudspeaker monomer which can effectively avoid the easy breakage of the bending part of a centering support sheet, so that the loudspeaker monomer can effectively reduce the product reliability risk.

In order to achieve the above object, the present invention provides a speaker unit, including:

a housing assembly provided with an accommodating chamber;

The magnetic circuit system is arranged in the accommodating cavity, a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity, and a magnetic gap is formed between the magnetic circuit system and the side wall of the accommodating cavity;

the vibration system comprises a vibrating diaphragm, a voice coil connected with the vibrating diaphragm and suspended in the magnetic gap, and a bracket connected with the vibrating diaphragm and suspended in the gap; and

the balance assembly is arranged corresponding to the gap, one end of the balance assembly is connected with the shell assembly, and the other end of the balance assembly is connected with the bracket; wherein the content of the first and second substances,

the balance assembly includes a centering branch piece, the centering branch piece includes:

an outer fixing portion, the outer fixing portion being annular;

the elastic supporting part is annular and is positioned on the inner side of the outer fixing part; and

a connection section between the outer fixing portion and the elastic support portion and connecting the outer fixing portion and the elastic support portion;

the outer fixing part is connected with the shell assembly, the elastic supporting part is located in the gap and is partially connected with the support, and the elastic supporting part elastically deforms along with the vibration of the support.

In one embodiment, the outer fixing portion and the elastic support portion are rectangular rings or elliptical rings, the outer fixing portion includes two long sides arranged oppositely and two short sides arranged oppositely, and the elastic support portion includes two long axis sides arranged oppositely and two short axis sides arranged oppositely;

The connecting section is connected with the long side and the long shaft side, and part of the short shaft side is connected with the bracket; or the connecting section is connected with the short side and the short side, and part of the long side is connected with the bracket.

In one embodiment, the number of the connecting sections is two, and the two connecting sections are symmetrically arranged;

each connecting section is connected to the center of one long edge and the long axis edge;

or, each connecting segment is connected to the center of one short side and the short shaft side.

In one embodiment, the outer fixing portion, the two connecting segments and the elastic supporting portion are integrally formed.

In one embodiment, the junction of each major axis side and each minor axis side is in a circular arc transition.

In an embodiment, the centering branch sheet is made of FPCB material, and further includes a pad structure, and the pad structure is connected to a position on the elastic supporting portion corresponding to the bracket;

and the lead of the voice coil is in conductive connection with the bonding pad structure along the vibrating diaphragm and the support.

In one embodiment, the number of the connecting sections is two, the two connecting sections are symmetrically arranged, and each connecting section is connected to the center of one long edge and the center of the long axis edge;

The two brackets are symmetrically arranged and are respectively and correspondingly connected with the two short shaft edges;

the pad structure is connected to the center of the short shaft side and located on one side of the short shaft side, which is far away from the short side.

In an embodiment, the pad structure is a bonding pad plate, and the bonding pad plate and the elastic support portion are located in the same plane.

In one embodiment, the pad structure comprises a cantilever and a pad which are arranged at an included angle, and one end of the cantilever, which is far away from the pad, is connected with the elastic supporting part;

the cantilever extends along the support, the bonding pad is fixedly connected with the vibrating diaphragm or the top wall of the support, and a lead of the voice coil is electrically connected with the bonding pad.

In an embodiment, the cantilever includes vertical section and the horizontal segment that is the contained angle setting, the pad connect in the vertical section is kept away from the one end of horizontal segment, just the pad with the horizontal segment is the setting of extending of keeping away from each other, the horizontal segment with the elastic support portion is connected.

In one embodiment, the vertical section and the horizontal section are vertically arranged;

and/or the bonding pad is vertically arranged with the vertical section;

And/or the horizontal section and the elastic supporting part are positioned in the same plane;

and/or the bonding pad, the vertical section, the horizontal section and the elastic supporting part are of an integrally formed structure.

In one embodiment, the elastic support portion is convexly provided with a connecting portion, and the horizontal section and the connecting portion are stacked.

In an embodiment, the pad structures include two pad structures, and the two pad structures are symmetrically arranged.

In one embodiment, the balancing assembly further comprises:

and two straight sections which deviate from each other and extend are arranged on two opposite sides of the auxiliary vibrating diaphragm, one of the straight sections is connected with the outer fixing part and the shell component, and the other straight section is connected with the elastic supporting part and one end of the support, which is positioned in the gap.

In one embodiment, the magnetic circuit system comprises a magnetic yoke, and a central magnetic circuit part and an annular magnetic circuit part which are arranged on the magnetic yoke, wherein the annular magnetic circuit part is arranged around the central magnetic circuit part, and forms a magnetic gap with the central magnetic circuit part;

the annular magnetic circuit part comprises an annular edge magnet and an annular edge magnetic conduction plate arranged above the annular edge magnet.

The invention further provides an electronic terminal which comprises a shell and the loudspeaker monomer, wherein a cavity is formed in the shell, and the loudspeaker monomer is arranged in the cavity.

According to the technical scheme, the magnetic circuit system is arranged in the accommodating cavity of the shell assembly, a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity, the balance assembly is arranged corresponding to the gap, one end of the balance assembly is connected with the shell assembly, the other end of the balance assembly is connected with the support, and therefore the balance assembly is used for balancing a resonance phenomenon generated when the voice coil drives the vibrating diaphragm to vibrate through the support; simultaneously, the centering disk of balanced subassembly includes annular outer fixed part and annular elastic support portion to and connect the linkage segment between them, make the outer fixed part of centering disk be connected with casing subassembly, in order to improve the installation stability of centering disk, elastic support portion is located the clearance and partly and leg joint, make elastic support portion take place elastic deformation along with the vibration of support, thereby effectively avoid the vibrating diaphragm to take place resonance or swing, promote the free acoustic performance of speaker. Furthermore, the elastic support part in the centering support piece is only bent at the annular turning part, so that the bending quantity of the elastic support part can be greatly reduced, the radian of the annular turning part is large, the stress distribution of the elastic support part in the work process can be effectively reduced, the deformation is not easy to occur, and the product reliability risk is reduced.

Drawings

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

Fig. 1 is a schematic structural diagram of a speaker unit according to an embodiment of the present invention;

FIG. 2 is an exploded view of a speaker unit according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a speaker unit according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a centering pad according to an embodiment of the present invention;

FIG. 5 is a schematic view of a centering chip according to another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a centering chip according to another embodiment of the present invention;

FIG. 7 is a schematic partial cross-sectional view of the centralizer of FIG. 6;

FIG. 8 is a schematic structural diagram of a centering pad according to still another embodiment of the present invention;

fig. 9 is a schematic structural diagram of a pad structure according to an embodiment of the invention.

The reference numbers illustrate:

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 of the 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.

A speaker is an important acoustic component of a portable electronic device, is used for performing conversion between an electrical signal and a sound signal, and is an energy conversion device. At present, with continuous progress and innovation of technology, the structural design of the speaker is also continuously required to be new and changed, which not only needs to satisfy the development trend of thinning, but also needs to pay more attention to the performance optimization, and also considers the process simplification and the cost control.

Based on the above concept and problems, the present invention provides a speaker unit 100. It is understood that the speaker unit 100 is applied to an electronic terminal, and the electronic terminal may be an electronic device, such as a mobile phone, a sound box, a computer, an earphone, a watch, a television, or a tablet computer, and is not limited herein.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, in an embodiment of the present invention, the speaker unit 100 includes a housing assembly 1, a magnetic circuit system 2, a vibration system 3 and a balance assembly 4, wherein the housing assembly 1 is provided with an accommodating cavity 1 a; the magnetic circuit system 2 is arranged in the accommodating cavity 1a, a gap 11 is formed between the magnetic circuit system 2 and the side wall of the accommodating cavity 1a, and a magnetic gap 2a is formed in the magnetic circuit system 2; the vibration system 3 comprises a diaphragm 32, a voice coil 31 connected with the diaphragm 32 and suspended in the magnetic gap 2a, and a bracket 33 connected with the diaphragm 32 and suspended in the gap 11; the balance assembly 4 corresponds to the gap 11, one end of the balance assembly 4 is connected with the shell assembly 1, and the other end of the balance assembly 4 is connected with the support 33.

In this embodiment, the balance assembly 4 includes a damper plate 41, and the damper plate 41 includes an outer fixing portion 411, an elastic supporting portion 412 and a connecting portion 413. Wherein, the outer fixing portion 411 is annular; the elastic supporting portion 412 is annular and located inside the outer fixing portion 411; the connection segment 413 is located between the outer fixing portion 411 and the elastic supporting portion 412, and connects the outer fixing portion 411 and the elastic supporting portion 412; the outer fixing portion 411 is connected to the housing assembly 1, the elastic supporting portion 412 is located in the gap 11 and is partially connected to the bracket 33, and the elastic supporting portion 412 is elastically deformed along with the vibration of the bracket 33.

In the present embodiment, as shown in fig. 1, fig. 2 and fig. 3, the casing assembly 1 includes a bottom casing (not shown) and an outer casing (not shown), wherein a supporting arm protrudes from a periphery of the bottom casing, and the magnetic circuit system 2 is disposed on the bottom casing of the casing assembly 1 and spaced from the supporting arm; the shell comprises a side part and a bottom part, the side part and the support arm are arranged correspondingly and form the accommodating cavity 1a in a surrounding mode with the bottom shell, the bottom part is formed by bending one end, adjacent to the support arm, of the side part towards the accommodating cavity 1a, and the gaps 11 are formed among the side part, the bottom part, the support arm and the magnetic circuit system 2 of the shell assembly 1.

It will be understood that the bottom shell is used for fixing and mounting the magnetic circuit system 2, and the periphery of the bottom shell is convexly provided with supporting arms, so that the bottom shell can be connected with the casing by the supporting arms, thereby enclosing the accommodating cavity 1 a. The magnetic circuit system 2 is fixedly arranged on one side of the bottom shell facing the containing cavity 1a and is arranged at an interval with the supporting arm. Through setting up the shell into lateral part and bottom for the lateral part corresponds the setting with the support arm, and from when the shell is connected with the drain pan, the lateral part encloses to close with the support arm of drain pan and forms and hold chamber 1a, so can make things convenient for the fixed part to be connected with the outer wall of lateral part. In this embodiment, the bottom of the housing is formed by bending one end of the side portion adjacent to the support arm into the accommodation chamber 1 a.

In this embodiment, the casing assembly 1 is configured as a bottom casing and a shell, so as to facilitate the installation and fixation of the magnetic circuit system 2, the vibration system 3 and the balance assembly 4, and improve the installation convenience of the speaker unit 100.

As shown in fig. 1, 2 and 3, the vibration system 3 includes a diaphragm 32 and a bracket 33 disposed opposite to the magnetic circuit system 2, the diaphragm 32 includes a central portion, a corrugated portion disposed around the central portion, and a fixing portion integrally disposed with the corrugated portion, one end of the bracket 33 is connected to the central portion, and the other end of the bracket 33 extends into the gap 11 toward the bottom wall of the accommodating chamber 1a and is connected to a centering pad 41 of the balance assembly 4.

It can be understood that, the support 33 is utilized to transmit the vibration of the diaphragm 32 to the elastic supporting portion 412 of the damper 41, so that the elastic supporting portion 412 is elastically deformed along with the vibration of the support 33, thereby improving the swing condition of the vibration system 3, and avoiding the left-right swing of the diaphragm 32 in the vibration process, thereby affecting the sound production effect.

In this embodiment, magnetic circuit 2 is provided with magnetic gap 2a, and vibration system 3 is still including hanging the voice coil 31 of locating in magnetic gap 2a, so make voice coil 31 and external circuit switch on, utilize voice coil 31 to transmit electric energy to magnetic gap 2a of magnetic circuit 2, make the magnetic field that magnetic circuit 2 produced convert the electric energy into mechanical energy, thereby make voice coil 31 take place the vibration, and drive vibration system 3's vibrating diaphragm 32 and realize the vibration sound production, further convert mechanical energy into acoustic energy. That is, after the voice coil 31 disposed in the magnetic gap 2a receives an externally varying alternating current signal, the voice coil makes a reciprocating motion of cutting magnetic lines of force under the driving of the magnetic field force of the magnetic circuit system 2, so as to drive the diaphragm 32 of the vibration system 3 to vibrate and generate sound.

It can be understood, the damper plate 41 includes annular outer fixed part 411 and annular elastic support part 412, and connect linkage segment 413 between them, make linkage segment 413, elastic support part 412 and outer fixed part 411 all are located the coplanar, and linkage segment 413 is the straightway, so, elastic support part 412 in the damper plate 41 only has bending in annular corner, the quantity of bending of elastic support part 412 can significantly reduce, and the radian of annular corner is great, can effectively reduce the stress distribution of elastic support part 412 during operation, be difficult for taking place deformation, reduce the product reliability risk.

According to the speaker monomer 100, the magnetic circuit system 2 is arranged in the accommodating cavity 1a of the shell component 1 and forms the gap 11 with the side wall of the accommodating cavity 1a, the balance component 4 is arranged corresponding to the gap 11 by arranging the balance component 4, one end of the balance component 4 is connected with the shell component 1, and the other end of the balance component 4 is connected with the bracket 33, so that the balance component 4 is utilized to balance a resonance phenomenon generated when the voice coil 31 drives the diaphragm 32 to vibrate through the bracket 33; meanwhile, the damper 41 of the balance assembly 4 includes an annular outer fixing portion 411 and an annular elastic support portion 412, and a connection section 413 connecting the outer fixing portion 411 and the annular elastic support portion 412, so that the outer fixing portion 411 of the damper 41 is connected to the housing assembly 1, so as to improve the mounting stability of the damper 41, the elastic support portion 412 is located in the gap 11 and is partially connected to the bracket 33, so that the elastic support portion 412 is elastically deformed along with the vibration of the bracket 33, thereby effectively preventing the vibration diaphragm 32 from resonating or swinging, and improving the acoustic performance of the speaker unit 100. Furthermore, the elastic support part 412 in the centering branch piece 41 is only bent at the annular corner, so that the bending quantity of the elastic support part 412 can be greatly reduced, the radian of the annular corner is large, the stress distribution of the elastic support part 412 in the working process can be effectively reduced, the deformation is less prone to occurring, and the product reliability risk is reduced.

In an embodiment, as shown in fig. 4 to 8, the outer fixing portion 411 and the elastic supporting portion 412 may be rectangular rings or elliptical rings, that is, the overall structure of the damper 41 is rectangular rings or elliptical rings, which is not limited herein.

In the present embodiment, the damper 41 is described by taking a rectangular ring as an example. As shown in fig. 4 to 8, the outer fixing portion 411 includes two opposite long sides 4111 and two opposite short sides 4112, and the elastic support portion 412 includes two opposite long sides 4121 and two opposite short sides 4122.

It can be understood that the two long sides 4111 and the two short sides 4112 of the outer fixing portion 411 are sequentially connected and enclose to form a rectangular ring structure, and the resilient support 412 is located inside the outer fixing portion 411, that is, each long side 4121 and each short side 4122 of the resilient support 412 correspond to each long side 4111 and each short side 4112 of the outer fixing portion 411.

As shown in fig. 4 to 8, the connecting segment 413 connects the long side 4111 and the long side 4121, and a portion of the short side 4122 is connected to the bracket 33, that is, the long side 4111 of the outer fixing portion 411 is connected to the long side 4121 of the elastic support portion 412 through the connecting segment 413. So set up for outer fixed part 411 and elastic support portion 412 are only connected through the linkage segment 413 of straightway, thereby make elastic support portion 412 only have the bending in annular corner (also be the junction of each major axis limit 4121 and each minor axis limit 4122), the quantity of bending of elastic support portion 412 that can significantly reduce, and the radian of annular corner is great, can effectively reduce the stress distribution of elastic support portion 412 during operation, more difficult deformation takes place, reduce product reliability risk.

In another embodiment, the connecting segment 413 connects the short edge 4112 and the short shaft edge 4122, and a portion of the long shaft edge 4121 is connected to the bracket 33, that is, the short edge 4112 of the outer fixing portion 411 is connected to the short shaft edge 4122 of the elastic supporting portion 412 through the connecting segment 413, which is not limited herein.

In an embodiment, as shown in fig. 4 to 8, the connecting segments 413 include two connecting segments 413, and the two connecting segments 413 are symmetrically arranged; each of the connecting segments 413 is connected to a center of the long side 4111 and the long side 4121.

In the embodiment, two connecting segments 413 are provided, such that each connecting segment 413 connects a long side 4111 of the outer fixing portion 411 and a long-axis side 4121 of the elastic support portion 412, thereby ensuring that the outer fixing portion 411 of the damper 41 is stably connected through the two connecting segments 413 and the outer fixing portion 411 and the elastic support portion 412 are located on the same plane. Optionally, two connecting segments 413 are symmetrically disposed, and each connecting segment 413 is connected to a center of one long side 4111 and the long-axis side 4121.

In another embodiment, the connecting segments 413 include two connecting segments 413, and the two connecting segments 413 are symmetrically arranged; each of the connecting segments 413 is connected to a center of the short side 4112 and the short side 4122, which is not limited herein.

In an embodiment, as shown in fig. 4 to 8, the outer fixing portion 411, the two connecting segments 413 and the elastic supporting portion 412 are integrally formed.

It can be understood that, by arranging the outer fixing portion 411, the two connecting segments 413 and the elastic support portion 412 as an integral structure, the structural strength of the spider 41 is effectively improved, and meanwhile, the processing and the production of the spider 41 are facilitated.

Of course, in other embodiments, the outer fixing portion 411 of the centering disk 41 may be disposed separately from the elastic support portion 412 through the connecting segment 413, and the fixing may be realized by gluing or the like, for example, and is not limited herein.

In one embodiment, as shown in fig. 4 to 8, the junction of each long axis 4121 and each short axis 4122 is configured as an arc transition. It can be understood that, by setting the connection point of each major axis edge 4121 and each minor axis edge 4122 of the elastic support portion 412 to be an arc transition design, the arc angle at the connection point is ensured to be large and smooth in transition, the stress distribution during the operation of the centering strut 41 can be effectively reduced, and the reliability margin is improved.

Meanwhile, the outer fixing portion 411 of the centering disk 41 is connected with the elastic support portion 412 only through the connecting section 413 of the two straight line segments, so that the number of bent parts is greatly reduced, stress during vibration can be dispersed, the centering disk 41 is not prone to deformation, and the product reliability risk is effectively reduced.

In an embodiment, as shown in fig. 4 to 8, the damper 41 is made of FPCB material, and the damper 41 further includes a pad structure 414, where the pad structure 414 is connected to a position of the elastic support 412 corresponding to the bracket 33; the lead of the voice coil 31 is electrically connected to the pad structure 414 along the diaphragm 32 and the support 33.

It can be understood that the damper 41 may be made of FPCB material, and the pad structure 413 is connected to the elastic support portion 412, so that the damper 41 is conveniently connected to the voice coil 31 of the speaker unit 100 through the pad structure 413 during the operation process, and thus the voice coil 31 is conveniently conducted to an external circuit.

As shown in fig. 4 to 8, optionally, the pad structure 413 is connected to the center of the short shaft edge 4122 and located on a side of the short shaft edge 4122 opposite to the short edge 4112. It is understood that the arrangement is such that the spider 41 facilitates the connection between the pad structure 413 and the voice coil 31 during operation, and avoids interference with other components of the speaker unit 100.

In an embodiment, as shown in fig. 2, 4 to 7, the connecting segments 413 include two connecting segments 413, two of the connecting segments 413 are symmetrically disposed, and each connecting segment 413 is connected to a center of the long side 4111 and the long-axis side 4121; the number of the brackets 33 is two, and the two brackets 33 are symmetrically arranged and are respectively and correspondingly connected with the two short shaft sides 4122; the pad structure 414 is connected to the center of the short side 4122 and is located on the side of the short side 4122 facing away from the short side 4112.

In one embodiment, as shown in fig. 5, the pad structure 414 is a pad 4141, and the pad 4141 and the elastic support 412 are located in the same plane.

In the present embodiment, the pad piece 4141 is provided at the center of the short side 4122 and on the side of the short side 4122 away from the short side 4112. It is understood that the short shaft edge 4122 is disposed in an arc shape adjacent to one end of the pad piece 4141, such that the short shaft edges 4122 at both sides of the pad piece 4141 are formed in a bent flared arc structure, thereby increasing the vibration elasticity of the elastic support portion 412 and simultaneously increasing the connection strength between the pad piece 4141 and the short shaft edge 4122.

In an embodiment, as shown in fig. 2, 3, and 4, the pad structure 414 includes a cantilever 4142 and a pad 4145 disposed at an included angle, and an end of the cantilever 4142 away from the pad 4145 is connected to the elastic support portion 412; the cantilever 4142 extends along the support 33, the bonding pad 4145 is fixedly connected to the diaphragm 32 or the top wall of the support 33, and the lead of the voice coil 31 is electrically connected to the bonding pad 4145.

In this embodiment, an end of the cantilever 4142 remote from the pad 4145 is connected to the short side 4122. The pad structure 413 is provided with the cantilever 4142 and the pad 4145 which are arranged at an included angle, so that one end of the cantilever 4142, which is far away from the pad 4145, is connected with the short shaft 4122, and thus, when the pad 4145 and the plane where the outer fixing portion 411 and the elastic supporting portion 412 of the spider 41 are located have a certain height difference, when the spider 41 is applied to the speaker unit 100, the pad 4145 of the spider 41 can be conveniently connected with the voice coil 31 of the speaker unit 100, and conduction between the voice coil 31 and the outer pad under the special structure of the speaker unit 100 is realized.

In one embodiment, as shown in fig. 4, 6, 7, 8 and 9, the cantilever 4142 includes an angled vertical segment 4143 and an angled horizontal segment 4144, the pad 4145 is connected to an end of the vertical segment 4143 away from the horizontal segment 4144, the pad 4145 extends away from the horizontal segment 4144, and the horizontal segment 4144 is connected to the elastic support portion 412.

In this embodiment, the horizontal segment 4144 is connected to the minor axis 4122. By arranging the cantilever 4142 to form the vertical segment 4143 and the horizontal segment 4144 arranged at an included angle, so as to connect the horizontal segment 4144 with the short shaft edge 4122 of the elastic support part 412, the vertical segment 4143 and the pad 4145 of the cantilever 4142 are located inside the short shaft edge 4122 of the elastic support part 412, that is, the vertical segment 4143 and the pad 4145 of the cantilever 4142 are located on the side of the short shaft edge 4122 opposite to the short shaft edge 4112, so that when the damper 41 is applied to the speaker unit 100, the pad 4145 of the damper 41 can be conveniently connected with the voice coil 31 of the speaker unit 100, and the voice coil 31 and the external pad can be conducted under the special structure of the speaker unit 100.

In one embodiment, as shown in fig. 9, the vertical segment 4143 is perpendicular to the horizontal segment 4144; the pads 4145 are perpendicular to the vertical segment 4143, and the pads 4145 extend away from the horizontal segment 4144, i.e., on opposite sides of the vertical segment 4143. Therefore, the bonding pad 4145 is arranged in parallel with the plane where the outer fixing portion 411 and the elastic supporting portion 412 of the centering bracket 41 are located, so that the bonding pad 4145 is connected with the lead of the voice coil 31, and meanwhile, the bonding pad 4145 is connected with the bracket 33 of the speaker unit 33.

In one embodiment, as shown in fig. 3 and 4, the horizontal segment 4144 is located in the same plane as the elastic support part 412. Optionally, the pad 4145, the vertical segment 4143, the horizontal segment 4144, and the minor axis 4122 are integrally formed. With this arrangement, the connection strength between the outer fixing portion 411 and the elastic support portion 412 of the spider 41 and the pad structure 413 is improved, thereby facilitating the simplification of the process of manufacturing the spider 41.

In the present embodiment, the pad 4145 is provided with a height difference with the horizontal segment 4144 by the vertical segment 4143, so that the conduction of the speaker unit 100 is realized by the lead connection spot welding of the pad 4145 and the voice coil 31. With the arrangement, the limitation that the bonding pad of the traditional centering support piece 41 and the vibrating arm are in the same horizontal plane is broken through, a certain height difference exists between the cantilever 4142 and the bonding pad 4145, and conduction between the voice coil 31 and an external bonding pad under the special structure of the loudspeaker single body 100 is realized.

In an embodiment, as shown in fig. 6, 7 and 8, the elastic supporting portion 412 is convexly provided with a connecting portion 4123, and the horizontal segment 4144 and the connecting portion 4123 are stacked.

In this embodiment, the short shaft edge 4122 is convexly provided with a connecting portion 4123, and the horizontal segment 4144 and the connecting portion 4123 are stacked. In the embodiment, the short shaft edge 4122 of the elastic support part 412 is provided with the connecting part 4123 in a protruding manner, the connecting part 4123 is provided with the pad, and the horizontal segment 4144 of the cantilever 4142 is also provided with the pad, so that the connecting part 4123 of the short shaft edge 4122 of the elastic support part 412 and the horizontal segment 4144 of the pad structure 414 can be conveniently welded by welding or electric welding, and the pad 4145 is electrically conducted with the elastic support part 412.

In an embodiment, as shown in fig. 2, 3, 4, 5, and 6, the pad structures 414 include two pad structures 414, and the two pad structures 414 are symmetrically disposed. It is understood that the arrangement is such that the connection with the two leads of the voice coil 31 of the speaker unit 100 is made using the pads 4145 of the two pad structures 413.

In an embodiment, as shown in fig. 2 and fig. 3, the balance assembly 4 further includes an auxiliary diaphragm 42, two straight sections extending away from each other are disposed on two opposite sides of the auxiliary diaphragm 42, one of the straight sections is connected to the outer fixing portion 411 and the housing assembly 1, and the other straight section is connected to the elastic supporting portion 412 and one end of the support 33 located in the gap 11.

As can be understood, the outer fixing portion 411 of the spider 41 is interposed between the supporting arm and the bottom of the housing assembly 1, and the elastic supporting portion 412 of the spider 41 is located in the gap 11; two opposite sides of the auxiliary diaphragm 42 are provided with two flat sections extending away from each other, one of the flat sections is sandwiched between the outer fixing portion 411 of the center brace 41 and the support arm, and the other flat section is connected with the horizontal section 4144 of the center brace 41.

In the present embodiment, the balance member 4 including the damper 41 and the auxiliary diaphragm 42 is disposed in the accommodating chamber 1a, so that the periphery of the damper 41 is sandwiched between the support arm and the bottom, thereby improving the mounting stability of the damper 41. It can be understood that, by providing the straight sections on two opposite sides of the auxiliary diaphragm 42, the two connecting portions are extended away from each other, so that the straight section of the auxiliary diaphragm 42 is clamped between the centering chip 41 and the supporting arm, thereby improving the connection stability of the auxiliary diaphragm 42.

It can be understood that, the vibration of the diaphragm 32 is transmitted to the auxiliary diaphragm 42 by the support 33, the swing condition of the vibration system 3 is improved by the auxiliary diaphragm 42, and the left-right swing of the diaphragm 32 in the vibration process is avoided, so that the sound production effect is influenced. In order to facilitate the auxiliary diaphragm 42 matching with the centering disk 41 to balance the vibration and swing of the diaphragm 32, the portion of the bracket 33, which is far away from the end of the diaphragm 32 and extends into the gap 11, may be connected to the auxiliary diaphragm 42.

Alternatively, the damper 41 may be provided in an annular structure, and the auxiliary diaphragm 42 may be provided in plurality.

In one embodiment, as shown in fig. 2 and 3, the magnetic circuit system 2 includes a magnetic yoke 21, and a central magnetic circuit portion 22 and an annular magnetic circuit portion 23 disposed on the magnetic yoke 21, wherein the annular magnetic circuit portion 23 is disposed around the central magnetic circuit portion 22 and forms a magnetic gap 2a with the central magnetic circuit portion 22.

In this embodiment, the magnetic yoke 21 is disposed on the bottom shell of the housing assembly 1 and spaced apart from the supporting arm; the central magnetic circuit portion 22 is disposed on a side of the magnetic yoke 21 facing the diaphragm 32; the annular magnetic circuit portion 23 is disposed on a side of the yoke 21 facing the diaphragm 32 and surrounds the central magnetic circuit portion 22, the magnetic gap 2a is formed between the annular magnetic circuit portion 23 and the central magnetic circuit portion 22, and the gap 11 is formed between the annular magnetic circuit portion 23 and the bottom.

It is understood that the yoke 21 is fixed to the bottom case, the central magnetic circuit portion 22 and the annular magnetic circuit portion 23 are disposed on a side of the yoke 21 facing the diaphragm 32, and the annular magnetic circuit portion 23 is disposed around the central magnetic circuit portion 22 and forms a magnetic gap 2a with the central magnetic circuit portion 22, so as to facilitate the suspension of the voice coil 31 in the magnetic gap 2a, i.e., between the central magnetic circuit portion 22 and the annular magnetic circuit portion 23. It can be understood that the annular magnetic circuit portion 23 which is not designed to be broken is adopted, so that the volume of the annular magnetic circuit portion 23 is effectively increased, the magnetic field intensity is higher, and the acoustic performance of the speaker unit 100 is improved.

In one embodiment, as shown in fig. 2 and 3, the central magnetic circuit portion 22 includes a central magnet 221 and a central magnetic conductive plate 222, and the central magnet 221 is sandwiched between the magnetic conductive yoke 21 and the central magnetic conductive plate 222. The annular magnetic circuit portion 23 includes an annular edge magnet 231 and an annular edge magnetic conductive plate 232 disposed above the annular edge magnet 231.

It can be understood that the annular edge magnet 231 is sandwiched between the magnetic yoke 21 and the annular edge magnetic conductive plate 232, and the annular edge magnetic conductive plate 232 is connected to the bottom, and forms a via hole or a through hole structure between the bottom, so as to conveniently provide a space for avoiding one end of the support 33 away from the diaphragm 32 and the pad structure 414 of the centering support 41.

In this embodiment, the central magnet 221 and the central magnetic conductive plate 222 have the same structural contour, and the central magnet 221 and the central magnetic conductive plate 222 may be plate-shaped structures. The annular edge magnet 231 and the annular edge magnetic conduction plate 232 have the same structural outline, and the annular edge magnet 231 and the annular edge magnetic conduction plate 232 can be selected to have an annular structure.

As shown in fig. 3, the annular edge magnetic conductive plate 232 is connected to the bottom of the housing, and a via hole or through hole structure is formed between the annular edge magnetic conductive plate 232 and the bottom, so as to facilitate the simplification of the processing process of the annular edge magnetic conductive plate 232 and the housing of the housing assembly 1. In this embodiment, the casing and the annular-edge magnetic conductive plate 232 are made of metal materials, so as to improve the heat conduction and dissipation effects.

In the inventive centralizer 41, the elastic support part 412 participating in vibration is integrally arranged to be in a ring structure, the long axis edge 4121 of the elastic support part 412 is connected with the long edge 4111 of the outer fixing part 411 by the connecting section 413 of the straight line section, the pad structure 414 is arranged on the short axis edge 4122 of the elastic support part 412, and the whole is in a symmetrical design, so that the elastic support part 412 between the pad structure 414 and the connecting section 413 has at most one return bend design, and the return bend part has a larger R angle and is transited smoothly, thereby effectively reducing the stress distribution of the elastic support part 412 in operation and improving the reliability margin.

It can be understood that the number of the bending parts of the elastic support part 412 of the centering disk 41 is reduced, so that the stress during vibration can be dispersed, the deformation is less likely to occur, and the risk of product reliability is reduced. The two major axis sides 4121 of the elastic support portion 412 are integrally connected together via the two minor axis sides 4122, so that both the major axis sides 4121 of the elastic support portion 412 can be conducted, thereby reducing the risk of conducting failure of the centering strut 41 during operation. Meanwhile, as shown in fig. 4 and 5, the two major axis sides 4121 of the elastic support portion 412 are connected to the pad structure 414 through the two minor axis sides 4122, or the two major axis sides 4121 of the elastic support portion 412 may be conducted to the pad piece 4141 through the two minor axis sides 4122 to form independent arm structures.

In this embodiment, as shown in fig. 4, fig. 6, fig. 7 and fig. 8, the pad structure 414 of the spider 41 is configured as the cantilever 4142 and the pad 4145, so that there is a certain height difference between the pad 4145 and the elastic support part 412, thereby realizing conduction between the voice coil 31 and the external pad under the special structure of the speaker unit 100.

As shown in fig. 3, in the present embodiment, the upper surface of the outer fixing portion 411 of the spider 41 is connected to the metal case, the lower surface is connected to the auxiliary diaphragm 42, the upper surface of the pad 4145 is connected to the bracket 33, the lower surface is connected to the voice coil 31 by wire, the vertical section 4143 of the cantilever 4142 is adhered to the vertical wall of the bracket 33, and the pad of the lower horizontal section 4144 is connected to the pad of the short axial side 4122 of the elastic support portion 412 of the spider 41.

The damper 41 of the present embodiment can achieve internal and external conduction without affecting the magnetic circuit space, and fully ensure performance of the magnetic circuit system 2. Through setting up independent pad connecting piece, select for use easily fashioned material and technology, fully guarantee the stability of shaping structure, both can play the signal conduction effect, play the effect of certain structure connecting piece again. The three-dimensional bonding pads are further arranged and are respectively conducted with the leads of the voice coil 31 at two symmetrical sides, or only arranged at one side and are respectively conducted with the start and end lines of the voice coil 31. It is understood that the independent pad connector may be implemented by, but not limited to, metal punch forming, injection molding, FPCB hot press forming, composite material compression molding, and the like, and is not limited thereto.

The present invention further provides an electronic terminal, which includes a housing and a speaker unit 100, and the specific structure of the speaker unit 100 refers to the foregoing embodiments, and since the electronic terminal adopts all technical solutions of all the foregoing embodiments, the electronic terminal at least has all beneficial effects brought by the technical solutions of the foregoing embodiments, and details are not repeated herein.

In this embodiment, a cavity is disposed in the housing, and the speaker unit 100 is disposed in the cavity. It is understood that the electronic terminal may be an electronic device, such as a mobile phone, a sound box, a computer, a headset, a watch, a television, or a tablet computer, and is not limited herein.

The above description is only an alternative 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 speaker cell, comprising:

a housing assembly provided with an accommodating chamber;

the balance assembly comprises a centering support piece and an auxiliary vibrating diaphragm, the centering support piece comprises an outer fixing part, an elastic supporting part and a connecting section, the outer fixing part is annular, the elastic supporting part is annular and is positioned on the inner side of the outer fixing part, and the connecting section is positioned between the outer fixing part and the elastic supporting part and is connected with the outer fixing part and the elastic supporting part; the outer fixing part is connected with the shell assembly, the elastic supporting part is positioned in the gap and is partially connected with the bracket, and the elastic supporting part elastically deforms along with the vibration of the bracket; two straight sections which deviate from each other and extend are arranged on two opposite sides of the auxiliary diaphragm, one of the straight sections is connected with the outer fixing part and the shell assembly, and the other straight section is connected with the elastic supporting part and one end, located in the gap, of the support.

2. The speaker unit as claimed in claim 1, wherein the outer fixing portion and the elastic support portion are rectangular rings or elliptical rings, the outer fixing portion includes two opposite long sides and two opposite short sides, and the elastic support portion includes two opposite long axis sides and two opposite short axis sides;

the connecting section is connected with the long side and the long shaft side, and part of the short shaft side is connected with the bracket; or the connecting section is connected with the short side and the short side, and the part of the long side is connected with the bracket.

3. The speaker cell as claimed in claim 2, wherein said connecting sections comprise two, said two connecting sections being symmetrically disposed;

4. The speaker unit as claimed in claim 3, wherein the outer fixing portion, the two connecting segments and the elastic supporting portion are integrally formed.

5. The speaker cell as claimed in claim 2, wherein the junction of each major axis edge and each minor axis edge is in a circular arc transition.

6. The speaker cell as claimed in claim 2, wherein the damper is made of FPCB material, the damper further comprising a land structure connected to the elastic support portion at a position corresponding to the bracket;

7. The speaker unit as claimed in claim 6, wherein the connecting sections include two connecting sections, two of the connecting sections are symmetrically disposed, and each connecting section is connected to a center of one of the long sides and the long side;

the pad structure is connected to the center of the short shaft side and is positioned on one side of the short shaft side, which is far away from the short side.

8. The speaker cell as claimed in claim 6, wherein the pad structure is a bonding pad plate, and the bonding pad plate and the elastic support portion are located in the same plane.

9. The single loudspeaker according to claim 6, wherein the pad structure comprises a cantilever and a pad arranged at an included angle, and one end of the cantilever, which is far away from the pad, is connected with the elastic support part;

10. The single loudspeaker of claim 9, wherein the cantilever includes a vertical section and a horizontal section disposed at an included angle, the pad is connected to an end of the vertical section away from the horizontal section, the pad extends away from the horizontal section, and the horizontal section is connected to the elastic support.

11. The speaker cell as claimed in claim 10, wherein the vertical section is disposed perpendicular to the horizontal section;

and/or the bonding pad is vertically arranged with the vertical section;

12. The speaker unit as claimed in claim 10, wherein the resilient support portion is provided with a protruding connection portion, and the horizontal portion and the connection portion are stacked.

13. The speaker cell as claimed in any one of claims 6 to 12, wherein the pad structures comprise two, the two pad structures being arranged symmetrically.

14. The speaker unit as claimed in any one of claims 1 to 12, wherein the magnetic circuit system includes a yoke, and a central magnetic circuit portion and an annular magnetic circuit portion provided on the yoke, the annular magnetic circuit portion being disposed around the central magnetic circuit portion and forming a magnetic gap with the central magnetic circuit portion;

15. An electronic terminal, comprising a housing and the speaker unit as claimed in any one of claims 1 to 14, wherein a cavity is disposed in the housing, and the speaker unit is disposed in the cavity.