CN111988712B

CN111988712B - Speaker monomer and electronic terminal

Info

Publication number: CN111988712B
Application number: CN202010906742.6A
Authority: CN
Inventors: 孙立国; 韩志磊
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2022-02-18
Anticipated expiration: 2040-08-31
Also published as: CN111988712A

Abstract

The invention discloses a loudspeaker single body and an electronic terminal, wherein the loudspeaker single body comprises a shell, a magnetic circuit system, a vibration system and a balance assembly, and the shell comprises a side part and a bottom part; the magnetic circuit system is connected with the bottom, a gap is formed between the magnetic circuit system and the bottom, and the magnetic circuit system is provided with a magnetic gap; the vibration system comprises a vibration diaphragm, a reinforcement part, a support and a voice coil, wherein the vibration diaphragm, the reinforcement part, the support and the voice coil are arranged opposite to the magnetic circuit system, the central part of the vibration diaphragm comprises an inner ring part with a first opening, the support comprises an annular top wall with a second opening and a side wall which is connected with the annular top wall and extends into the gap, the periphery of the annular top wall is connected with the inner ring part and is exposed out of the first opening, the reinforcement part covers the second opening, one end of the voice coil is connected with the annular top wall, and the other end of the voice coil is suspended in the magnetic gap; the balance assembly corresponds the clearance setting, and the one end and the bottom of balance assembly are connected, and the other end is connected with the lateral wall. The invention aims to provide a loudspeaker monomer which reduces the thickness of a vibrating diaphragm and has a good heat dissipation effect.

Description

Speaker 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. With the miniaturization of electronic devices such as mobile phones, the size design of the speaker is more and more challenging. The voice coil loudspeaker voice coil direct bonding is on vibrating diaphragm or reinforcement portion among the correlation technique, and the heat transfer efficiency of vibrating diaphragm or reinforcement portion is lower, leads to the heat transfer of voice coil loudspeaker voice coil not to go out, and the heat dissipation is not good.

Disclosure of Invention

The invention mainly aims to provide a loudspeaker monomer and an electronic terminal, and aims to provide a loudspeaker monomer which is capable of reducing the thickness of a vibrating diaphragm and has a good heat dissipation effect.

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

a housing comprising sides and a bottom;

the magnetic circuit system is connected with the bottom, a gap is formed between the magnetic circuit system and the bottom, and a magnetic gap is formed in the magnetic circuit system;

the vibration system comprises a vibration diaphragm, a reinforcement part, a support and a voice coil, wherein the vibration diaphragm, the reinforcement part, the support and the voice coil are arranged opposite to the magnetic circuit system, the central part of the vibration diaphragm comprises an inner ring part with a first opening, the support comprises an annular top wall with a second opening and a side wall which is connected with the annular top wall and extends into the gap, the periphery of the annular top wall is connected with the inner ring part and is exposed out of the first opening, the reinforcement part covers the second opening, one end of the voice coil is connected with the annular top wall, and the other end of the voice coil is suspended in the magnetic gap; and

the balance assembly corresponds to the gap, one end of the balance assembly is connected with the bottom, and the other end of the balance assembly is connected with the side wall.

In one embodiment, the annular top wall comprises:

an annular connecting portion formed with the second opening; and

the annular flat top is arranged around the periphery of the annular connecting part, the annular flat top and the annular connecting part are matched to form a limiting step, and the periphery of the annular flat top, which is far away from the annular connecting part, is connected with the inner ring part;

the reinforcing part covers the second opening, the periphery of the reinforcing part is limited in the limiting step, and one side, back to the reinforcing part, of the annular connecting part is connected with the voice coil.

In one embodiment, the annular top wall further comprises an arc-shaped part arranged around the periphery of the annular flat top part, the arc-shaped part is formed by bending the periphery of the annular flat top part far away from the annular connecting part towards one side of the voice coil, and the side wall is connected with the arc-shaped part;

the arc portion is formed with convex arc face, interior ring portion is equipped with concave arc face, interior ring portion pass through concave arc face with convex arc face cooperation with arc portion is connected.

In one embodiment, the annular connecting portion, the annular flat top portion, the arc portion and the side wall are of an integrally formed structure.

In an embodiment, the diaphragm includes a corrugated portion surrounding the inner ring portion and a fixing portion surrounding the corrugated portion, and the fixing portion includes a flange extending downward, and the flange is fixedly connected to an outer sidewall of the side portion.

In one embodiment, the balancing assembly comprises:

the centering support piece comprises an outer fixing part and an elastic supporting part connected with the outer fixing part, the outer fixing part is connected with the bottom, and the elastic supporting part is arranged corresponding to the gap and is connected with the side wall; and

one end of the auxiliary vibrating diaphragm is connected with one side, back to the bottom, of the outer fixing portion, and the other end of the auxiliary vibrating diaphragm is connected with one side, back to the side wall, of the elastic supporting portion.

In an embodiment, the number of the auxiliary diaphragms is two, the support includes two side walls symmetrically arranged, and one of the auxiliary diaphragms is arranged corresponding to one of the side walls.

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

and the lead of the voice coil is in conductive connection with the pad structure along the annular top wall and the side wall.

In an embodiment, the pad structure includes cantilever and the pad that is the contained angle setting, the cantilever is kept away from the one end of pad with the elastic support portion is connected, the cantilever is followed the lateral wall extends, the pad with annular roof with the pin connection of voice coil loudspeaker voice coil.

In an embodiment, the support is provided with a conductive circuit extending along the annular top wall and the side wall, and the lead of the voice coil is electrically connected with the centering support piece through the conductive circuit.

In one embodiment, the bracket is made of a metal material.

In one embodiment, the magnetic circuit system includes a magnetic yoke, and a central magnetic circuit portion and an annular magnetic circuit portion which are provided on the magnetic yoke, the annular magnetic circuit portion is disposed around the central magnetic circuit portion, and forms the magnetic gap with the central magnetic circuit portion, and the annular magnetic circuit portion is connected to the bottom portion through a connecting portion, and forms the gap with the bottom portion.

In one embodiment, the central magnetic circuit portion includes a central magnet and a central magnetic conductive plate, and the central magnet is sandwiched between the magnetic conductive yoke and the central magnetic conductive plate;

the annular magnetic circuit part comprises an annular edge magnet and an annular edge magnetic conduction plate, the annular edge magnet is clamped between the magnetic conduction yoke and the annular edge magnetic conduction plate, and the annular edge magnetic conduction plate is connected with the bottom through the connecting part and forms the gap between the bottom and the magnetic conduction plate.

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

According to the technical scheme, the magnetic circuit system is connected with the bottom of the shell, a gap is formed between the magnetic circuit system and the bottom, the annular top wall of the support is connected with the inner ring portion of the vibrating diaphragm and exposed out of the first opening, the reinforcing portion covers the second opening, and therefore the inner ring portion, the annular top wall and the reinforcing portion jointly form the central portion of the vibrating diaphragm, and the thickness of the vibrating diaphragm is effectively reduced; simultaneously, the annular top wall of the support is directly connected with the voice coil, so that the voice coil is favorable for realizing heat dissipation through the annular top wall exposed out of the first opening, and the heat dissipation effect is improved. Further, the side wall of the support extends into the gap and is connected with the balance component, so that the vibration of the vibrating diaphragm can be transmitted to the balance component by the support, and the vibrating diaphragm is balanced by the balance component to remove the swing in the vibration direction.

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

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is an exploded view of a speaker unit according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a bracket according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a centering chip according to an embodiment of the invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Loudspeaker monomer	313	Fixing part
1	Outer casing	32	Reinforcing part
				11	Side part	33	Support frame
12	Bottom part	331	Annular roof
				13	Gap	3311	Annular connection part
14	Connecting part	3312	Annular flat top
				2	Magnetic circuit system	3313	Arc-shaped part
2a	Magnetic gap	3314	Second opening
				21	Magnetic conductive yoke	3315	Limiting step
22	Central magnetic circuit part	3316	Convex arc surface
				221	Center magnet	332	Side wall
222	Central magnetic conduction plate	34	Voice coil
				23	Annular magnetic circuit part	4	Balancing assembly
231	Ring edge magnet	41	Centering support plate
				232	Ring edge magnetic conduction plate	411	External fixing part
3	Vibration system	412	Elastic support part
				31	Vibrating diaphragm	413	Connecting segment
311	Inner ring part	414	Pad structure
				3111	First opening	4141	Cantilever arm
3112	Concave arc surface	4142	Bonding pad
				312	Folded ring part	42	Auxiliary vibrating diaphragm

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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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.

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. With the miniaturization of electronic devices such as mobile phones, the size design of the speaker is more and more challenging. The voice coil loudspeaker voice coil direct bonding is on vibrating diaphragm or reinforcement portion among the correlation technique, and the heat transfer efficiency of vibrating diaphragm or reinforcement portion is lower, leads to the heat transfer of voice coil loudspeaker voice coil not to go out, and the heat dissipation is not good. Meanwhile, the vibrating diaphragm and the support are combined in a front mode, so that the support cannot be exposed, and the radiating effect of the support is poor. And the front bonding is usually achieved by bonding or other means, which increases the thickness of the diaphragm, or the thickness of the diaphragm plus glue.

Based on the above-mentioned 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, a computer, an earphone, a watch, a television, or a tablet computer, and is not limited herein.

Referring to fig. 1 to 5, in an embodiment of the present invention, the speaker unit 100 includes a housing 1, a magnetic circuit system 2, a vibration system 3, and a balance assembly 4, wherein the housing 1 includes a side portion 11 and a bottom portion 12; the magnetic circuit system 2 is connected with the bottom 12, a gap 13 is formed between the magnetic circuit system 2 and the bottom 12, and a magnetic gap 2a is formed in the magnetic circuit system 2; the vibration system 3 includes a diaphragm 31, a reinforcement portion 32, a support 33, and a voice coil 34, which are disposed opposite to the magnetic circuit system 2, wherein a central portion of the diaphragm 31 includes an inner ring portion 311 formed with a first opening 3111, the support 33 includes an annular top wall 331 having a second opening 3314, and a sidewall 332 connected to the annular top wall 331 and extending into the gap 13, a periphery of the annular top wall 331 is connected to the inner ring portion 311 and exposed to the first opening 3111, the reinforcement portion 32 covers the second opening 3314, one end of the voice coil 34 is connected to the annular top wall 331, and the other end thereof is suspended in the magnetic gap 2 a; the balance assembly 4 is disposed corresponding to the gap 13, one end of the balance assembly 4 is connected to the bottom 12, and the other end is connected to the sidewall 332.

In the present embodiment, the housing 1 is used for installing, fixing and protecting the magnetic circuit system 2, the vibration system 3, the balance assembly 4 and other components of the speaker unit 100, and the structure of the housing 1 may have a housing for accommodating a cavity, a casing, a mounting case, a mounting bracket and the like, which is not limited herein. It can be understood that, when the housing 1 is a metal part, the magnetic circuit system 2 and the housing 1 are fixed by adhesion. In other embodiments, when the housing 1 is formed by plastic injection molding, the magnetic-side conducting plate of the magnetic circuit system 2 is first injected into the housing 1 as an insert, and then the other parts are bonded and fixed.

It can be understood that the diaphragm 31 of the vibration system 3 is disposed opposite to the magnetic circuit system 2, as shown in fig. 1, 2 and 4, the diaphragm 31 includes a central portion, a folded ring portion 312 disposed around the central portion, and a fixing portion 313 disposed around the folded ring portion 312, and the fixing portion 313 includes a downward extending flange fixedly connected to an outer sidewall of the side portion 11.

In this embodiment, the corrugated rim portion 312 protrudes toward the side away from the voice coil, and the fixing portion 313 is formed by extending the outer side of the corrugated rim portion 312 downward, so as to facilitate the fixing connection with the outer side wall 11 of the housing 1, thereby reducing the fixing area of the diaphragm 31 in the horizontal direction, effectively improving the effective vibration area of the diaphragm 31, and improving the acoustic performance of the speaker unit 100.

As shown in fig. 1, fig. 2 and fig. 4, the central portion of the diaphragm 31 includes an inner ring portion 311 formed with a first opening 3111, that is, the bending ring portion 312 is disposed around the inner ring portion 311, and the inner ring portion 311 encloses and forms the first opening 3111. The periphery of the annular top wall 331 of the support 33 is connected to the inner ring portion 311 of the central portion of the diaphragm 31 and exposed to the first opening 3111, so that the support 33 is exposed, and thus the heat dissipation effect of the support 33 can be improved.

It can be understood that the annular top wall 331 of the support 33 encloses and forms the second opening 3314, so as to cover the second opening 3314 by the reinforcement portion 32, such that the reinforcement portion 32, the annular top wall 331 of the support 33 and the inner ring portion 311 form a central portion of the diaphragm 31, and such arrangement effectively reduces the thickness of the central portion of the diaphragm 31.

In this embodiment, one end of the voice coil 34 is connected to the annular top wall 331, and the other end is suspended in the magnetic gap 2a of the magnetic circuit system 2, so that the voice coil 34 radiates heat through the annular top wall 331 of the bracket 33, thereby effectively improving the heat radiation performance. When voice coil 34 and external circuit switched on like this, utilize voice coil 34 to transmit electric energy to magnetic gap 2a of magnetic circuit 2 for the magnetic field that magnetic circuit 2 produced converts the electric energy into mechanical energy, thereby makes voice coil 34 take place the vibration, and drives vibration system 3's vibrating diaphragm 31 and realize vibrating the sound production, further converts mechanical energy into acoustic energy. That is, after the voice coil 34 disposed in the magnetic gap 2a receives the externally varying alternating current signal, the voice coil makes a reciprocating motion of cutting the magnetic lines of force under the driving of the magnetic field force of the magnetic circuit system 2, so as to drive the diaphragm 31 of the vibration system 3 to vibrate and generate sound.

It can be understood that the balance assembly 4 is disposed corresponding to the gap 13, and one end of the balance assembly 4 is connected to the bottom 12, and the other end is connected to the sidewall 332, so that the vibration of the diaphragm 31 is transmitted to the balance assembly 4 by using the bracket 33, and thus the balance assembly 4 is used to balance the vibration of the diaphragm 31 except other swinging conditions in the vibration direction, thereby effectively improving the acoustic performance of the speaker unit 100.

In the speaker unit 100 of the present invention, the magnetic circuit system 2 is connected to the bottom 12 of the housing 1, and the gap 13 is formed, so that the annular top wall 331 of the bracket 33 is connected to the inner ring portion 311 of the diaphragm 31 and exposed to the first opening 3111, and the reinforcement portion 32 is covered on the second opening 3314, so that the inner ring portion 311, the annular top wall 331 and the reinforcement portion 32 together form the central portion of the diaphragm 31, and the thickness of the diaphragm 31 is effectively reduced; meanwhile, the annular top wall 331 of the support 33 is directly connected to the voice coil 34, which is beneficial for the voice coil 34 to dissipate heat through the annular top wall 331 exposed out of the first opening 3111, thereby improving the heat dissipation effect. Further, the side wall 332 of the support 33 is extended into the gap 13 and connected to the balance member 4, so that the vibration of the diaphragm 31 can be transmitted to the balance member 4 by the support 33, and the vibration of the diaphragm 31 is balanced by the balance member 4 except for the oscillation in the vibration direction.

In this embodiment, the speaker unit 100 further includes a bottom casing for fixing and installing the magnetic circuit system 2, and a supporting arm is convexly disposed on a periphery of the bottom casing, so that the bottom casing can be connected with the housing 1 by using the supporting arm, thereby enclosing and forming an accommodating cavity. The magnetic circuit system 2 is fixedly arranged on one side of the bottom shell facing the containing cavity and is arranged at an interval with the supporting arm. It can be understood that, by arranging the housing 1 into the side portion 11 and the bottom portion 12, the side portion 11 and the supporting arm are correspondingly arranged, so that when the housing 1 is connected with the bottom shell, the side portion 11 and the supporting arm of the bottom shell enclose to form an accommodating cavity, so that the fixing portion 313 can be conveniently connected with the outer wall of the side portion 11. The bottom 12 of the housing 1 is formed by bending the end of the side 11 adjacent to the supporting arm into the accommodating cavity, and the bottom 12 is connected with the magnetic circuit system 2 and forms a gap 13.

Through setting up drain pan and shell 1 two part structure to make things convenient for magnetic circuit 2 and vibration system 3, balanced subassembly 4's installation fixed, improve speaker monomer 100's installation convenience.

In one embodiment, as shown in fig. 2, 3, 4 and 5, the annular top wall 331 includes an annular connecting portion 3311 and an annular flat top portion 3312, wherein the annular connecting portion 3311 is formed with the second opening 3314; the annular flat top portion 3312 surrounds the periphery of the annular connecting portion 3311, the annular flat top portion 3312 and the annular connecting portion 3311 cooperate to form a limiting step 3315, and the periphery of the annular flat top portion 3312 away from the annular connecting portion 3311 is connected to the inner ring portion 311.

In this embodiment, the reinforcement portion 32 covers the second opening 3314, the periphery of the reinforcement portion 32 is limited by the limit step 3315, and one side of the annular connecting portion 3311 facing away from the reinforcement portion 32 is connected to the voice coil 34. A limit step 3315 is arranged on the annular top wall 331 adjacent to the second opening 3314, so that the annular top wall 331 of the bracket 33 is connected with the reinforcement part 32 by the limit abutment of the limit step 3315 and the reinforcement part 32; on the other hand, the matching of the limiting step 3315 and the reinforcing part 32 ensures that the annular top wall 331 and the reinforcing part 32 are located on the same plane after being connected, thereby avoiding the occurrence of height difference and avoiding the influence on the acoustic performance of the speaker unit 100 caused by the vibration performance of the diaphragm 31 when the annular top wall 331 of the bracket 33 drives the reinforcing part 32 to vibrate.

It will be appreciated that the annular top wall 331 of the support 33 is of annular configuration, the annular top wall 331 being alternatively a rectangular or elliptical ring. In the present embodiment, the annular top wall 331 is illustrated as a rectangular ring, and the annular connecting portion 3311 and the annular flat top portion 3312 of the annular top wall 331 are both rectangular rings, i.e., the second opening 3314 is disposed in a rectangular ring shape. Thus, after the periphery of the flat top portion 3312 is connected to the inner ring portion 311, the flat top portion 3312 of the bracket 33 is completely exposed to the first opening 3111, so as to effectively improve the heat dissipation performance of the bracket 33.

In this embodiment, the annular flat top portion 3312 of the bracket 33 and the annular connecting portion 3311 are matched to form the limiting step 3315, so that the limiting step 3315 surrounds the second opening 3314, and when the reinforcing portion 32 covers the second opening 3314, the periphery of the reinforcing portion 32 is limited by the limiting step 3315, so that the upper surface of the reinforcing portion 32 (i.e., the surface facing away from the voice coil 34) and the upper surface of the annular flat top portion 3312 (i.e., the surface facing away from the voice coil 34) are flush with each other, and the thickness of the central portion of the diaphragm 31 can be effectively reduced.

In one embodiment, as shown in fig. 2, 3, 4 and 5, the annular top wall 331 further includes an arc portion 3313 disposed around a periphery of the annular flat top portion 3312, the arc portion 3313 is formed by bending a periphery of the annular flat top portion 3312 away from the annular connecting portion 3311 toward a side of the voice coil 34, and the sidewall 332 is connected to the arc portion 3313.

In this embodiment, the arc portion 3313 is formed with a convex arc surface 3316, the inner ring portion 311 is provided with a concave arc surface 3112, and the inner ring portion 311 is connected to the arc portion 3313 through the cooperation of the concave arc surface 3112 and the convex arc surface 3316.

It can be understood that, by bending the periphery of the annular flat top portion 3312 to form the arc portion 3313 and making the outer surface of the arc portion 3313 form the convex arc surface 3316, the inner ring portion 311 is provided with the concave arc surface 3112, so that the inner ring portion 311 is connected to the arc portion 3313 by matching the concave arc surface 3112 with the convex arc surface 3316, and thus the connection stability between the inner ring portion 311 of the diaphragm 31 and the bracket 33 can be improved.

In one embodiment, as shown in fig. 4 and 5, the annular connecting portion 3311, the annular flat-top portion 3312, the arc portion 3313 and the sidewall 332 are integrally formed. It will be appreciated that such an arrangement is advantageous, on the one hand, to improve the structural strength of the support 33 and, on the other hand, to simplify the manufacturing process of the support 33.

In an embodiment, as shown in fig. 2, 3, 4 and 6, the balance assembly 4 includes a damper sheet 41 and an auxiliary diaphragm 42, wherein the damper sheet 41 includes an outer fixing portion 411 and an elastic supporting portion 412 connected to the outer fixing portion 411, the outer fixing portion 411 is connected to the bottom 12, and the elastic supporting portion 412 is disposed corresponding to the gap 13 and connected to the sidewall 332; one end of the auxiliary diaphragm 42 is connected to a side of the outer fixing portion 411 facing away from the bottom portion 12, and the other end of the auxiliary diaphragm 42 is connected to a side of the elastic supporting portion 412 facing away from the sidewall 332

In this embodiment, through setting up the damper wafer 41 into outer fixed part 411 and elastic support portion 412, make outer fixed part 411 and elastic support portion 412 connect through the linkage segment 413 of straightway, and outer fixed part 411, elastic support portion 412 and linkage segment 413 are located the coplanar, thereby make elastic support portion 412 in the damper wafer 41 only have bending in annular turning, the quantity of bending of elastic support portion 412 that can significantly reduce, and the radian of annular turning is great, can effectively reduce the stress distribution of elastic support portion 412 during operation, deformation takes place more difficultly, reduce product reliability risk.

In an embodiment, as shown in fig. 4 and 6, the outer fixing portion 411 and the elastic supporting portion 412 may be rectangular rings, that is, the overall structure of the damper 41 is rectangular rings, which is not limited herein. The damper 41 is described by taking a rectangular ring as an example. The outer fixing portion 411 of the centralizer 41 includes two opposite long sides and two opposite short sides, and the elastic support portion 412 includes two opposite long axis sides and two opposite short axis sides.

It can be understood that two long sides and two short sides of the outer fixing portion 411 are connected in sequence and enclose to form a rectangular ring structure, and the elastic supporting portion 412 is located inside the outer fixing portion 411, that is, each long side and each short side of the elastic supporting portion 412 correspond to each long side and each short side of the outer fixing portion 411. Optionally, the connecting segment 413, the elastic supporting portion 412 and the outer fixing portion 411 are all located in the same plane.

In this embodiment, the connection segment 413 connects the long side and the long axis side, that is, the long side of the outer fixing portion 411 is connected to the long axis side of the elastic supporting portion 412 through the connection segment 413. So set up, make outer fixed part 411 and elastic support portion 412 only connect through the linkage segment 413 of straightway, thereby make elastic support portion 412 only bend in annular corner (also be the junction on each major axis limit and each minor axis limit), 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, be more difficult for taking place deformation, reduce product reliability risk

In another embodiment, the connecting section 413 connects the short side and the short shaft side, that is, the short side of the outer fixing portion 411 is connected to the short shaft side of the elastic supporting portion 412 through the connecting section 413, which is not limited herein.

In this embodiment, as shown in fig. 6, the connecting segments 413 include two connecting segments 413, the two connecting segments 413 are symmetrically disposed, and each connecting segment 413 is connected to a long side of the outer fixing portion 411 and a long-axis side center of the elastic supporting portion 412.

It can be understood that, by providing two connecting segments 413, each connecting segment 413 connects a long side of the outer fixing portion 411 and a long axis side of the elastic support portion 412, so as to ensure that the outer fixing portion 411 of the damper 41 is stably connected through the two connecting segments 413, and at the same time, the outer fixing portion 411 and the elastic support portion 412 are located on the same plane. Optionally, two of the connecting segments 413 are symmetrically disposed, and each of the connecting segments 413 is connected to a center of one of the long sides and the long-axis side.

In this embodiment, the outer fixing portion 411, the two connecting segments 413 and the elastic supporting portion 412 are integrally formed. It can be understood that such an arrangement is effective to improve the structural strength of the spider 41, and is also beneficial to the manufacturing of the spider 41.

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 this embodiment, the connection between each major axis of the elastic support 412 and each minor axis of the elastic support 412 is in a circular arc transition. It can be understood that, by setting the connection between each long axis side and each short axis side of the elastic support part 412 to be an arc transition design, it is ensured that the arc angle at the connection is large and smooth in transition, the stress distribution during the operation of the center clip 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. 2 and fig. 4, the auxiliary diaphragm 42 includes two, the support 33 includes two side walls 332 symmetrically disposed, and one of the auxiliary diaphragms 42 is disposed corresponding to one of the side walls 332.

In the present embodiment, by providing the balance member 4 composed of the damper disk 41 and the auxiliary diaphragm 42, the outer fixing portion 411 of the damper disk 41 is interposed between the support arm and the bottom portion 12, thereby improving the mounting stability of the damper disk 41. The elastic support part 412 of the centering support 41 is connected with the side wall 332 of the bracket 33 in the gap 13, so that the bracket 33 is connected with the balance component 4 and the diaphragm 31, and the balance component 4 is effectively utilized to balance other swinging of the diaphragm 31 in the vibration direction when the voice coil 34 vibrates, thereby improving the acoustic performance of the speaker unit 100.

It can be understood that, the two opposite sides of the auxiliary diaphragm 42 are provided with the connecting portions, so that the two connecting portions deviate from the extension, and thus the connecting portion of the auxiliary diaphragm 42 is clamped between the outer fixing portion 411 of the centering support 41 and the supporting arm, and the connection stability of the auxiliary diaphragm 42 is improved. Another connecting portion of the auxiliary diaphragm 42 is connected to the elastic supporting portion 412 of the centering disk 41 and the side wall 332 of the bracket 33 in the gap 13, so that the vibration of the diaphragm 31 is transmitted to the auxiliary diaphragm 42 by the bracket 33, the vibration condition of the vibration system 3 is improved by the auxiliary diaphragm 42, and the left-right vibration of the diaphragm 31 in the vibration process is avoided, thereby affecting the sound production effect.

In order to facilitate the auxiliary diaphragm 42 and the centering disk 41 to cooperate to balance the vibration and swing of the diaphragm 31, the side wall 332 of the bracket 33, which is far from the end of the diaphragm 31 and extends into the gap 13, may be connected to the auxiliary diaphragm 42.

In an embodiment, the centralizer 41 is made of FPCB material, the centralizer 41 further includes a pad structure 414, and the pad structure 414 is connected to the elastic support 412 at a position corresponding to the side wall 332; the leads of the voice coil 34 are electrically connected to the land structure 414 along the annular top wall 331 and the side wall 332.

In this embodiment, the pad structure 414 includes a cantilever 4141 and a pad 4142 disposed at an included angle, an end of the cantilever 4141 away from the pad 4142 is connected to the short side of the elastic support portion 412 and located in the gap 13, and the pad 4142 is connected to the annular top wall 331 and the lead of the voice coil 34. Optionally, the pad structures 414 include two pad structures 414, and the two pad structures 414 are symmetrically disposed and connected to the short-axis side of the elastic support portion 412.

It can be understood that, by providing the pad structure 414, the cantilever 4141 of the pad structure 414 makes the pad 4142 and the elastic support portion 412 of the spider 41 be in different planes, that is, there is a height difference between the pad 4142 and the elastic support portion 412, so that the magnetic circuit system 2 does not need to be designed to be broken, and meanwhile, the short circuit caused by contact with other components of the magnetic circuit system 2 during the conduction process of the voice coil 34 and the external circuit can be avoided.

In the present embodiment, the pad structure 414 is connected to the elastic support portion 412, so that the spider 41 is connected to the voice coil 34 of the speaker unit 100 through the pad 4142 of the pad structure 414 during operation, and thus the voice coil 34 is conveniently conducted to an external circuit. Optionally, the pad structure 414 is connected to the center of the short side and is located on the side of the short side facing away from the short side. By the arrangement, the connection between the pad structure 414 and the voice coil 34 is facilitated during the operation of the spider 41, and the transmission interference with other components of the speaker unit 100 is avoided.

It can be understood that, by arranging the pad structure 414 as the cantilever 4141 and the pad 4142 at an included angle, one end of the cantilever 4141 away from the pad 4142 is connected to the short shaft side, so that the pad 4142 has a certain height difference with respect to the plane where the outer fixing portion 411 and the elastic supporting portion 412 of the spider 41 are located, when the spider 41 is applied to the speaker unit 100, the pad 4142 of the spider 41 can be conveniently connected to the voice coil 34 of the speaker unit 100, and the voice coil 34 and the outer pad can be conducted under the special structure of the speaker unit 100.

In this embodiment, the cantilever 4141 is perpendicular to the plane where the outer fixing portion 411 and the elastic supporting portion 412 are located, and the cantilever 4141 is perpendicular to the pad 4142, so that the plane where the pad 4142 is located is parallel to the plane where the outer fixing portion 411 and the elastic supporting portion 412 are located, and thus the pad 4142 is connected to the lead of the voice coil 34, and is also beneficial to being connected to the bracket 33 of the speaker unit 100.

It will be appreciated that the cantilever 4141 extends through the gap 13 toward the annular top wall 331 of the support 33 so that the pad 4142 is connected to the annular top wall 331 of the support 33, and the voice coil 34 is led out adjacent to one end of the annular top wall 331 and is electrically connected to the pad 4142, so that the voice coil 34 can be electrically connected to an external circuit by the centering clip 41.

In one embodiment, the support 33 is provided with a conductive circuit extending along the annular top wall 331 and the side wall 332, and the lead of the voice coil 34 is electrically connected to the spider 41 through the conductive circuit. It will be appreciated that the arrangement is such that the voice coil 34 is connected to external circuitry via the bracket 33 and spider 41.

In one embodiment, the bracket 33 is made of a metal material. Optionally, the metal material of the bracket 33 is one of aluminum, aluminum magnesium alloy, aluminum lithium alloy, and titanium alloy. Of course, in other embodiments, the bracket 33 may also be made of rigid plastic, carbon fiber, etc., and is not limited herein.

In one embodiment, as shown in fig. 2 and 4, the magnetic circuit system 2 includes a magnetic yoke 21, and a central magnetic circuit portion 22 and an annular magnetic circuit portion 23 provided on the magnetic yoke 21, the annular magnetic circuit portion 23 is disposed around the central magnetic circuit portion 22 and forms the magnetic gap 2a with the central magnetic circuit portion 22, and the annular magnetic circuit portion 23 is connected to the bottom portion 12 through a connecting portion 14 and forms the gap 13 with the bottom portion 12.

In the present embodiment, the magnetic yoke 21 is fixed to the bottom case, the central magnetic circuit portion 22 and the annular magnetic circuit portion 23 are disposed on one side of the magnetic yoke 21 facing the diaphragm 31, 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 34 in the magnetic gap 2a, that is, the suspension of the voice coil 34 between the central magnetic circuit portion 22 and the annular magnetic circuit portion 23. It can be understood that, by providing the annular magnetic circuit portion 23, that is, the annular magnetic circuit portion 23 without being designed to be broken is larger in volume, so that the magnetic field strength is higher, thereby improving the acoustic performance of the speaker unit 100.

In one embodiment, as shown in fig. 2, 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, the annular edge magnet 231 is sandwiched between the magnetic conductive yoke 21 and the annular edge magnetic conductive plate 232, and the annular edge magnetic conductive plate 232 is connected to the bottom portion 12 through the connecting portion 14, and forms the gap 13 with the bottom portion 12.

In this embodiment, the central magnet 221 and the central magnetic plate 222 have the same structural contour, and the central magnet 221 and the central magnetic plate 222 may be selected to have a plate-like structure. The annular edge magnet 231 and the annular edge magnetic conducting plate 232 have the same structural outline, and the annular edge magnet 231 and the annular edge magnetic conducting plate 232 can be selected to be of annular structures.

As shown in fig. 4, the annular magnetic-edge conducting plate 232 is connected to the bottom 12 of the casing 1, and a gap 13 is formed between the annular magnetic-edge conducting plate 232 and the bottom 12, so as to facilitate the processing of the annular magnetic-edge conducting plate 232 and the casing 1. In this embodiment, the shell 1 and the annular magnetic conducting plate 232 are made of metal materials, so as to improve the heat conduction and dissipation effects.

In the speaker unit 100 of the present invention, the annular top wall 331 of the support 33 is exposed at the first opening 3111 of the diaphragm 31, so that the voice coil 34 is connected with the annular top wall 331 of the support 33, heat is directly conducted to the support 33, heat dissipation is performed, and a heat dissipation effect is effectively improved. For guaranteeing the space, the vibrating diaphragm 31 is combined with the arc portion 3313 of the bracket 33 by bonding or other methods, so that the space design of the speaker unit 100 is guaranteed, the vibrating diaphragm 31 is combined with the bracket 33 without adopting the traditional front combination, the thickness of the central portion of the vibrating diaphragm 31 is effectively reduced, and the inner space is increased.

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 comprising sides and a bottom;

the vibration system comprises a vibration diaphragm, a reinforcing part, a support and a voice coil, wherein the vibration diaphragm, the reinforcing part, the support and the voice coil are arranged opposite to the magnetic circuit system, the central part of the vibration diaphragm comprises an inner ring part with a first opening, the support comprises an annular top wall with a second opening and a side wall which is connected with the annular top wall and extends into the gap, the periphery of the annular top wall is connected with the inner ring part and is exposed out of the first opening, the annular top wall comprises an annular connecting part and an annular flat top part, the second opening is formed in the annular connecting part, the annular flat top part is arranged around the periphery of the annular connecting part, the annular flat top part and the annular connecting part are matched to form a limiting step, the periphery of the annular flat top part, which is far away from the annular connecting part, is connected with the inner ring part, the reinforcing part covers the second opening, and the periphery of the reinforcing part is limited on the limiting step, the annular top wall and the reinforcing part are arranged in a flush mode, one end of the voice coil is connected with one side, back to the reinforcing part, of the annular connecting part, and the other end of the voice coil is suspended in the magnetic gap; and

2. The speaker cell as claimed in claim 1, wherein the annular top wall further includes an arc portion disposed around a periphery of the annular flat top portion, the arc portion being formed by bending a periphery of the annular flat top portion away from the annular connection portion toward a side of the voice coil, the side wall being connected to the arc portion;

3. The speaker cell as claimed in claim 2, wherein the annular connecting portion, the annular flat top portion, the arcuate portion and the side wall are of an integrally formed construction.

4. The speaker unit as claimed in claim 1, wherein the diaphragm includes a corrugated portion surrounding the inner ring portion and a fixing portion surrounding the corrugated portion, the fixing portion includes a flange extending downward, and the flange is fixedly connected to an outer sidewall of the side portion.

5. The speaker cell of any one of claims 1-4, wherein the balance assembly comprises:

6. The speaker unit as claimed in claim 5, wherein the auxiliary diaphragm comprises two, the support comprises two sidewalls symmetrically disposed, and one of the auxiliary diaphragms is disposed corresponding to one of the sidewalls.

7. The speaker unit as claimed in claim 5, wherein the stiffener is made of FPCB material, and the stiffener further includes a pad structure connected to the elastic support portion at a position corresponding to the side wall;

8. The speaker unit as claimed in claim 7, wherein the pad structure includes a cantilever and a pad disposed at an included angle, an end of the cantilever away from the pad is connected to the elastic support portion, the cantilever extends along the sidewall, and the pad is connected to the annular top wall and a lead of the voice coil.

9. The speaker cell as claimed in claim 7, wherein the support frame is provided with a conductive trace extending along the top wall and the side wall, and the lead of the voice coil is electrically connected to the centering pad through the conductive trace.

10. The speaker cell as claimed in any one of claims 1 to 4, wherein the support is made of a metallic material.

11. The speaker unit as claimed in any one of claims 1 to 4, 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 provided around the central magnetic circuit portion and forming the magnetic gap with the central magnetic circuit portion, the annular magnetic circuit portion being connected to the bottom portion through a connecting portion and forming the gap with the bottom portion.

12. The speaker cell as claimed in claim 11, wherein the central magnetic circuit portion includes a central magnet and a central magnetic conductive plate, the central magnet being sandwiched between the magnetic conductive yoke and the central magnetic conductive plate;

13. An electronic terminal, characterized in that, it comprises a housing and a speaker unit as claimed in any one of claims 1 to 12, wherein a cavity is provided in the housing, and the speaker unit is provided in the cavity.