CN212727400U

CN212727400U - Speaker monomer and electronic terminal

Info

Publication number: CN212727400U
Application number: CN202021878369.XU
Authority: CN
Inventors: 高利强; 王兴龙; 刘琦琦
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-16
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a loudspeaker single body and an electronic terminal, wherein the loudspeaker single body comprises a shell component, a magnetic circuit system, a vibration system and a balance component, and the shell of the shell component comprises a side part and a bottom part; the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit part and a plurality of side magnetic circuit parts, wherein the central magnetic circuit part and the side magnetic circuit parts are arranged on the magnetic yoke; the vibration system comprises a vibrating diaphragm fixed on the side part of the shell and a voice coil suspended in the magnetic gap; the balance assembly comprises a centering disk made of FPCB materials, the centering disk comprises an outer fixing portion connected with the shell and an elastic portion connected with the outer fixing portion, and the elastic portion extends to the gap along the avoiding space and is connected with the voice coil. The utility model aims at providing an avoid the voice coil loudspeaker voice coil to take place the speaker monomer that sways, improve the free play sound quality and the acoustic performance of speaker.

Description

Speaker monomer and electronic terminal

Technical Field

The utility model relates to an acoustoelectric product technical field, in particular to speaker monomer and applied this speaker monomer's electronic terminal.

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. In order to adapt to the miniaturization and multi-function development of various sound electronic equipment and information communication equipment, the micro-speaker used in the equipment tends to be miniaturized correspondingly, so that the matching between the speaker and other peripheral elements is more compact. Particularly, with the demand for the development of light and thin electronic devices such as mobile phones, the quality of speakers used therein is increasingly required.

The vibrating diaphragm in the micro loudspeaker in the related art is in a single-vibrating-diaphragm structure, and the voice coil is not fixed, so that the voice coil swings in the loudspeaker, the phenomenon of unbalanced vibration is easy to occur, and the sound output of the micro loudspeaker is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a speaker monomer and electron terminal aims at providing one kind and avoids the voice coil loudspeaker voice coil to take place the speaker monomer that sways, improves the free play tone quality and the acoustic performance of speaker.

In order to achieve the above object, the utility model provides a speaker monomer, speaker monomer includes:

a housing assembly comprising an outer shell of a metallic material, the outer shell comprising sides and a bottom;

the magnetic circuit system is fixed on the shell and comprises a magnetic yoke, a central magnetic circuit part and a plurality of side magnetic circuit parts, wherein the central magnetic circuit part and the side magnetic circuit parts are arranged on the magnetic yoke;

the vibration system comprises a vibrating diaphragm fixed on the side part of the shell and a voice coil suspended in the magnetic gap; and

balance assembly, balance assembly passes the clearance with the voice coil loudspeaker voice coil is connected, balance assembly includes the centring disk of FPCB material, centring disk include with outer fixed part that the shell is connected and with the elastic component that outer fixed part is connected, the elastic component along dodge the space and extend to the clearance with the voice coil loudspeaker voice coil is connected.

In an embodiment, the balance assembly further includes an auxiliary diaphragm, the auxiliary diaphragm is disposed below the centering support, one end of the auxiliary diaphragm is connected to the housing, and the other end of the auxiliary diaphragm penetrates through the gap and is connected to the voice coil.

In an embodiment, the auxiliary diaphragm includes a ring folding section, and a fixing section and a connecting section integrally disposed with the ring folding section, the fixing section and the connecting section are disposed on two opposite sides of the ring folding section, the fixing section is connected with the outer fixing portion and the housing, and the connecting section penetrates through the gap to be connected with the elastic portion and the voice coil.

In one embodiment, the connecting section and the elastic part are connected with one side of the voice coil facing the gap through a glue layer;

or the elastic part is connected with one side of the voice coil facing the gap through an adhesive layer, and the connecting section is connected with the lower surface of the voice coil facing the bottom wall of the magnetic gap through the adhesive layer;

or the connecting section and the elastic part are connected with the lower surface of the voice coil facing to the bottom wall of the magnetic gap through an adhesive layer.

In one embodiment, the speaker unit has a rectangular structure, the magnetic circuit system is provided with four gaps corresponding to four corners of the speaker unit respectively, and the four gaps are arranged at intervals and communicated with the magnetic gaps;

the balance assembly comprises four auxiliary diaphragms, and each auxiliary diaphragm corresponds to one gap.

In an embodiment, the housing assembly further includes a bottom shell, a support arm is protruded from a periphery of the bottom shell, and the magnetic yoke is disposed on the bottom shell;

the lateral part of shell with the support arm corresponds the setting to with the drain pan encloses to close and forms and holds the chamber, the bottom by the lateral part is close to the one end of support arm to hold intracavity bending type, outer fixed part clamp locate the bottom with between the support arm.

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;

each limit magnetic circuit portion includes limit magnet and limit magnetic conduction board, limit magnet presss from both sides to locate the magnetic conduction yoke with between the limit magnetic conduction board, limit magnetic conduction board pass through connecting portion with the bottom is connected.

In one embodiment, the casing and the side magnetic conductive plate are of an integrally formed structure.

In one embodiment, the diaphragm includes a central portion, a corrugated portion surrounding the central portion, and a fixing portion surrounding the corrugated portion;

the folded ring part is arranged in a downward protruding manner;

the fixing part comprises a flanging extending downwards, and the flanging is fixedly connected with the outer side wall of the side part.

The utility model also provides an electronic terminal, including casing and the aforesaid speaker monomer, be equipped with the cavity in the casing, the speaker monomer is located in the cavity.

The utility model discloses technical scheme's speaker monomer is through setting up magnetic circuit on casing assembly's metal material's shell, set up magnetic circuit's central magnetic circuit portion and a plurality of limit magnetic circuit portion on the magnetic yoke, and form the magnetic gap, utilize the clearance that forms intercommunication magnetic gap between a plurality of limit magnetic circuit portions, and form between bottom and limit magnetic circuit portion and dodge the space, make vibration system's voice coil loudspeaker voice coil hang and locate the magnetic gap, through setting up balanced subassembly, make the outer fixed part of centering piece be connected with the shell in the balanced subassembly, elastic part extends to in the clearance along dodging the space, and be connected with the voice coil loudspeaker voice coil, thereby realize the fixed to the voice coil loudspeaker voice coil, so the centering piece of usable balanced subassembly effectively avoids the voice coil loudspeaker voice coil to take place to sway, ensure vibration system can balance, thereby improve speaker monomer's play tone quality and acoustic performance. Meanwhile, the gap communicated with the magnetic gap is arranged on the magnetic circuit system, and an avoiding space is formed between the bottom and the side magnetic circuit part, so that the length of the elastic part of the centering disk is increased, the local stress of the elastic part is reduced, the fatigue resistance of the centering disk is improved, and the condition that the centering disk cracks or the conducting layer is broken is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 structural view of another viewing angle of the speaker unit according to an embodiment of the present invention;

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

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

fig. 5 is a schematic cross-sectional view of a speaker unit according to another embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Loudspeaker monomer	233	Connecting part
1	Shell assembly	24	Gap
				1a	Containing cavity	3	Vibration system
11	Bottom shell	31	Voice coil
				111	Support arm	32	Vibrating diaphragm
12	Outer casing	321	Center part
				121	Side part	322	Folded ring part
122	Bottom part	323	Fixing part
				123	Avoidance space	33	Reinforcing part
2	Magnetic circuit system	4	Balancing assembly
				2a	Magnetic gap	41	Centering support plate
21	Magnetic conductive yoke	411	External fixing part
				22	Central magnetic circuit part	412	Elastic part
221	Center magnet	42	Auxiliary vibrating diaphragm
				222	Central magnetic conduction plate	421	Folding ring segment
23	Side magnetic circuit part	422	Fixed segment
				231	Edge magnet	423	Connecting segment
232	Edge magnetic conduction plate	43	Glue layer

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, 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 motion situation, etc. in a specific posture (as shown in the drawings), 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, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to 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, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The vibrating diaphragm in the micro loudspeaker in the related art is in a single-vibrating-diaphragm structure, and the voice coil is not fixed, so that the voice coil swings in the loudspeaker, the phenomenon of unbalanced vibration is easy to occur, and the sound output of the micro loudspeaker is poor. Meanwhile, in other related technologies, since the elastic portion of the spider is only located in the gap between the plurality of side magnetic portions, the elastic portion of the spider is short, which causes excessive local stress and poor fatigue resistance, thereby easily causing the spider to crack or the conductive layer to break.

Based on the above conception 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, fig. 2, fig. 3, fig. 4 and fig. 5, in the 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 includes a shell 12 made of a metal material, and the shell 12 includes a side portion 121 and a bottom portion 122; the magnetic circuit system 2 is fixed to the housing 12, the magnetic circuit system 2 includes a magnetic yoke 21, and a central magnetic circuit portion 22 and a plurality of side magnetic circuit portions 23 provided on the magnetic yoke 21, a magnetic gap 2a is formed between the central magnetic circuit portion 22 and the plurality of side magnetic circuit portions 23, a gap 24 communicating with the magnetic gap 2a is formed between the plurality of side magnetic circuit portions 23, and a relief space 123 is formed between the bottom portion 122 and the side magnetic circuit portions 23; the vibration system 3 comprises a diaphragm 32 fixed on the side 121 of the shell 12 and a voice coil 31 suspended in the magnetic gap 2 a; the balance assembly 4 passes through the gap 24 and is connected with the voice coil 31, the balance assembly 4 includes a damper 41 made of FPCB material, the damper 41 includes an outer fixing portion 411 connected with the housing 12 and an elastic portion 412 connected with the outer fixing portion 411, and the elastic portion 412 extends to the gap 24 along the escape space 123 and is connected with the voice coil 31.

In the present embodiment, the housing assembly 1 is used for mounting, 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 assembly 1 may have a structure of a housing, a casing, a mounting case, a mounting bracket and the like which accommodate the cavity 1a, and is not limited herein. It can be understood that, when the housing assembly 1 is a metal member, the magnetic circuit system 2 and the housing assembly 1 are fixed by adhesion. In another embodiment, when the housing assembly 1 is formed by plastic injection molding, the magnetic-conducting side plate of the magnetic circuit system 2 is first injection-molded as an insert in the housing assembly 1, and then the other parts are bonded and fixed.

In an embodiment, the housing assembly 1 comprises an outer shell 12 of a metallic material, said outer shell 12 comprising a side portion 121 and a bottom portion 122. It will be appreciated that the housing 12 is made of a metal material, and by providing the housing 12 with the side portion 121 and the bottom portion 122, the housing 12 can be conveniently used for mounting and fixing the magnetic circuit system 2.

In this embodiment, the central magnetic circuit portion 22 and the plurality of side magnetic circuit portions 23 of the magnetic circuit system 2 are disposed on the magnetic yoke 21, the plurality of side magnetic circuit portions 23 are spaced and surround the central magnetic circuit portion 22, so that a magnetic gap 2a is formed between the central magnetic circuit portion 22 and the plurality of side magnetic circuit portions 23, the voice coil 31 of the vibration system 3 is suspended in the magnetic gap 2a, so that the voice coil 31 is conducted with an external circuit, the voice coil 31 is utilized to transmit electric energy to the magnetic gap 2a of the magnetic circuit system 2, so that the magnetic field generated by the magnetic circuit system 2 converts the electric energy into mechanical energy, so that the voice coil 31 vibrates, and the diaphragm 32 of the vibration system 3 is driven to realize vibration and sound production, and further converts the mechanical energy into sound energy. That is, after the voice coil 31 disposed in the magnetic gap 2a receives an externally varying alternating current signal, the voice coil is driven by the magnetic field force of the magnetic circuit system 2 to perform a reciprocating motion of cutting the magnetic lines of force, so as to drive the diaphragm 32 of the vibration system 3 to vibrate and generate sound.

It can be understood that, a gap 24 communicating with the magnetic gap 2a is formed between the plurality of side magnetic circuit portions 23, that is, a gap 24 communicating with the magnetic gap 2a is formed between two adjacent side magnetic circuit portions 23, and an escape space 123 is formed between the bottom 122 of the housing 12 and the side magnetic circuit portions 23, by providing the balance assembly 4, the outer fixing portion 411 of the damper 41 of the balance assembly 4 is connected to the housing 12, and the elastic portion 412 extends to the gap 24 along the escape space 123 and is connected to the voice coil 31, so as to effectively increase the length of the elastic portion 412 of the damper 41, thereby reducing the local stress of the elastic portion 412, improving the fatigue resistance of the damper 41, and further avoiding the occurrence of cracking or breaking of the conductive layer of the damper 41.

In the present embodiment, the mounting and fixing of the damper piece 41 are achieved by connecting the damper piece 41 to the housing 12 of the case assembly 1 via the fixing portion 411. Meanwhile, the spider 41 is connected to the voice coil 31 in the magnetic gap 2a through the elastic portion 412 passing through the gap 24, so that the end of the voice coil 31 in the magnetic gap 2a is fixed by the spider 41, and further the voice coil 31 is prevented from transmitting vibration.

The speaker unit 100 of the present invention arranges the magnetic circuit system 2 on the metal material casing 12 of the housing assembly 1, arranges the central magnetic circuit portion 22 and the plurality of side magnetic circuit portions 23 of the magnetic circuit system 2 on the magnetic yoke 21, and forms the magnetic gap 2a, utilizes the gap 24 formed between the plurality of side magnetic circuit portions 23 and communicating the magnetic gap 2a, and forms the avoiding space 123 between the bottom portion 122 and the side magnetic circuit portions 23, so that the voice coil 31 of the vibration system 3 is suspended in the magnetic gap 2a, and by arranging the balance assembly 4, the outer fixing portion 411 of the center bracket 41 in the balance assembly 4 is connected with the casing 12, the elastic portion 412 extends into the gap 24 along the avoiding space 123 and is connected with the voice coil 31, thereby fixing the voice coil 31, so that the center bracket 41 of the balance assembly 4 can be utilized to effectively avoid the swinging of the voice coil 31, and ensure the vibration system 3 can balance vibration, thereby improving the sound output quality and acoustic performance of the speaker unit 100. Meanwhile, the gap 23 communicated with the magnetic gap 2a is arranged on the magnetic circuit system 2, and the avoiding space 123 is formed between the bottom 122 and the side magnetic circuit portion 23, so that the length of the elastic portion 412 of the spider 41 is increased, the local stress of the elastic portion 412 is reduced, the fatigue resistance of the spider 41 is improved, and the spider 41 is prevented from cracking or conducting layer breaking.

In this embodiment, as shown in fig. 4 and 5, the magnetic circuit system 2 is provided with a magnetic gap 2a, the vibration system 3 further includes a voice coil 31, the voice coil 31 is suspended in the magnetic gap 2a, so that the voice coil 31 is conducted with an external circuit, and the voice coil 31 is used to transmit electric energy to the magnetic gap 2a of the magnetic circuit system 2, so that the magnetic field generated by the magnetic circuit system 2 converts the electric energy into mechanical energy, thereby causing the voice coil 31 to vibrate and drive the vibration system 3 to vibrate and generate sound, and further converting the mechanical energy into sound energy. That is, after the voice coil 31 disposed in the magnetic gap 2a receives an externally varying alternating current signal, the voice coil is driven by the magnetic field force of the magnetic circuit system 2 to perform a reciprocating motion of cutting the magnetic lines of force, so as to drive the diaphragm 32 of the vibration system 3 to vibrate and generate sound.

It can be understood that one end of the voice coil 31 is suspended in the magnetic gap 2a, and the magnetic field generated by the magnetic circuit system 2 converts the electric energy into the mechanical energy, so that the voice coil 31 in the magnetic gap 2a vibrates, and at this time, the voice coil 31 is also easy to swing, thereby affecting the sound output quality of the speaker unit 100. Through set up balanced subassembly 4 in accommodation chamber 1a for elastic component 412 of balanced subassembly 4 extends to in the clearance 24 along dodging space 123, passes clearance 24 and stretches into in magnetic gap 2a to be connected with voice coil 31 in the magnetic gap 2a, thereby realize the fixed to voice coil 31, so effectively prevent that voice coil 31 from taking place the swing.

In an embodiment, as shown in fig. 3, 4 and 5, the balance assembly 4 further includes an auxiliary diaphragm 42, the auxiliary diaphragm 42 is disposed below the centering chip 41, one end of the auxiliary diaphragm 42 is connected to the housing 12, and the other end of the auxiliary diaphragm 42 passes through the gap 24 and is connected to the voice coil 31.

In this embodiment, the balance assembly 4 including the centering chip 41 and the auxiliary diaphragm 42 is disposed in the accommodating chamber 1a, so that the centering chip 41 is connected to the housing assembly 1 through the fixing portion 411, and one end of the auxiliary diaphragm 42 is connected to the housing assembly 1, thereby achieving the installation and fixation of the centering chip 41 and the auxiliary diaphragm 42. Meanwhile, the centering disk 41 passes through the gap 24 through the elastic part 412 to be connected with the voice coil 31 in the magnetic gap 2a, and the other end of the auxiliary diaphragm 42 passes through the gap 24 to be connected with the voice coil 31 in the magnetic gap 2a, so that the centering disk 41 and the auxiliary diaphragm 42 are jointly used for fixing one end of the voice coil 31 in the magnetic gap 2a, and the voice coil 31 is further prevented from swinging during vibration.

In the present embodiment, the voice coil 31 is a rectangular ring structure, and the voice coil 31 has two long sides and two short sides, so that the voice coil 31 is fixed by the balance assembly 4, and the structure is simplified and the cost is saved. As shown in fig. 3, the two centering fins 41 are symmetrically disposed on two opposite sides of the voice coil 31, that is, the two centering fins 41 are respectively disposed on two opposite sides of two long sides of the voice coil 31 and connected to one end of the two long sides in the magnetic gap 2 a; alternatively, the two centering tabs 41 are respectively provided on two opposite sides of the two short sides of the voice coil 31, and are connected to one end of the two short sides located in the magnetic gap 2 a.

It is understood that the fixing portion 411 of each of the centering tabs 41 on opposite sides of the voice coil 31 is connected to the housing assembly 1, and the elastic portion 412 passes through the gap 24 and is connected to the voice coil 31 in the magnetic gap 2a, so that the voice coil 31 can be fixed to the housing assembly 1 through the fixing portion 411. In this embodiment, the voice coil 31 may also be connected to an external power source through the centering disk 41 and/or the auxiliary diaphragm 42.

In the present embodiment, the elastic portion 412 of the spider 41 is provided with a pad, and one end of the voice coil 31 located in the magnetic gap 2a is provided with a conductive pad, so that the spider 41 is conductively connected with the conductive pad of the voice coil 31 through the pad of the elastic portion 412.

In an embodiment, as shown in fig. 3, 4 and 5, the auxiliary diaphragm 42 includes a ring-folding segment 421, and a fixing segment 422 and a connecting segment 423 integrally disposed with the ring-folding segment 421, the fixing segment 422 and the connecting segment 423 are disposed on two opposite sides of the ring-folding segment 421, the fixing segment 422 is connected with the outer fixing portion 411 and the casing 12, and the connecting segment 423 is connected with the elastic portion 412 and the voice coil 31 through the gap 24.

In this embodiment, the cross section of the corrugated rim section 421 of the auxiliary diaphragm 42 is a semicircular ring structure, the corrugated rim section 421 of the auxiliary diaphragm 42 may be a concave groove structure or a convex groove structure, and the fixing section 422 and the connecting section 423 of the auxiliary diaphragm 42 are located at two opposite sides of the corrugated rim section 421 and are integrally disposed with the corrugated rim section 421, so that the structural strength of the auxiliary diaphragm 42 can be improved.

It can be understood that the fixing section 422 and the connecting section 423 are located on two opposite sides of the ring folding section 421, and the fixing section 422 and the connecting section 423 are located on the same horizontal plane and extend away from each other, so that the auxiliary diaphragm 42 is conveniently connected with the fixing portion 411 of the centering disk 41 and the housing assembly 1 through the fixing section 422, and thus the installation stability of the auxiliary diaphragm 42 is improved. Meanwhile, the auxiliary diaphragm 42 extends into the magnetic gap 2a through the gap 24 by the connecting section 423, and is connected to the elastic portion 412 of the centering disk 41 and the voice coil 31 located in the magnetic gap 2a, so as to further fix the voice coil 31 and prevent the voice coil 31 from swinging.

In one embodiment, as shown in fig. 4, the connecting segment 423 and the elastic part 412 are connected to the side of the voice coil 31 facing the gap 24 through a glue layer 43. As can be understood, the fixing section 422 of the auxiliary diaphragm 42 is stacked on the fixing portion 411 of the damper 41 and connected to the housing assembly 1. The connecting section 423 of the auxiliary diaphragm 42 and the elastic portion 412 of the spider 41 are stacked and connected to the side of the voice coil 31 facing the gap 24, that is, the connecting section 423 and the elastic portion 412 are connected to the outer side wall of the voice coil 31.

In one embodiment, as shown in fig. 5, the elastic portion 412 is connected to the side of the voice coil 31 facing the gap 24 through a glue layer 43, and the connecting segment 423 is connected to the lower surface of the voice coil 31 facing the bottom wall of the magnetic gap 2a through the glue layer 43.

As can be understood, the fixing section 422 of the auxiliary diaphragm 42 is stacked on the fixing portion 411 of the damper 41 and connected to the housing assembly 1. The elastic portion 412 of the spider 41 is laminated with a portion of the connection portion 423 of the auxiliary diaphragm 42, and the elastic portion 412 is connected to the side of the voice coil 31 facing the gap 24 through the adhesive layer 43, and a portion of the connection portion 423 not covered by the elastic portion 412 extends into the lower surface of the voice coil 31 and is connected to the lower surface of the voice coil 31 facing the bottom wall of the magnetic gap 2a through the adhesive layer 43.

Of course, in other embodiments, the connecting segment 423 and the elastic portion 412 may be connected to the lower surface of the voice coil 31 facing the bottom wall of the magnetic gap 2a through the adhesive layer 43. This increases the contact area between the connection portion 423 and the elastic portion 412 and the voice coil 31, thereby improving connection stability.

In one embodiment, as shown in fig. 1, 2, 3, 4 and 5, the speaker unit 100 has a rectangular structure, the magnetic circuit system 2 is provided with four gaps 24 corresponding to four corners of the speaker unit 100, and the four gaps 24 are spaced apart from each other and communicate with the magnetic gap 2 a; the balance assembly 4 includes four auxiliary diaphragms 42, and each auxiliary diaphragm 42 is disposed corresponding to one of the gaps 24.

It can be understood that the speaker unit 100 has a rectangular structure, and in this case, the housing assembly 1 of the speaker unit 100, the magnetic circuit system 2, and the voice coil 31 of the vibration system 3 all have a rectangular structure. It can be understood that magnetic circuit 2 has two long sides and two short sides, and the junction that each long side and each short side are connected is provided with the clearance 24 that communicates magnetic gap 2a, and also four clearances 24 that magnetic circuit 2 is located four corners of magnetic circuit 2, and supplementary vibrating diaphragm 42 includes four, and four supplementary vibrating diaphragms 42 correspond four clearances 24 respectively and set up, so make four supplementary vibrating diaphragms 42 distribute in four corner positions of voice coil 31 to effectively avoid voice coil 31 to take place the swing.

In an embodiment, as shown in fig. 1, 2, 3, 4 and 5, the housing assembly 1 further includes a bottom shell 11, a supporting arm 111 is protruded from a periphery of the bottom shell 11, and the magnetic yoke 21 is disposed on the bottom shell 11. In this embodiment, the side portion 121 of the housing 12 corresponds to the supporting arm 111, and encloses with the bottom case 11 to form an accommodating cavity 1a, the bottom portion 122 is formed by bending one end of the side portion 121 adjacent to the supporting arm 111 toward the accommodating cavity 1a, and the external fixing portion 411 is interposed between the bottom portion 122 and the supporting arm 111.

In the present embodiment, the bottom shell 11 is used for fixing and installing the magnetic circuit system 2, and the supporting arm 111 is protruded on the periphery of the bottom shell 11, so that the supporting arm 111 can be connected with the housing 12 to form the accommodating cavity 1 a. The magnetic circuit system 2 is fixedly arranged on one side of the bottom case 11 facing the accommodating cavity 1a, and is spaced from the supporting arm 111.

It can be understood that, by arranging case 12 as side portion 121 and bottom portion 122 such that side portion 121 is arranged corresponding to support arm 111, when case 12 is connected to bottom case 11, side portion 121 and support arm 111 of bottom case 11 enclose to form accommodating cavity 1a, so that diaphragm system 3 can be conveniently connected to the outer wall of side portion 121. In the present embodiment, the bottom 122 of the housing 12 is formed by bending the end of the side portion 121 adjacent to the supporting arm 111 into the accommodating chamber 1 a.

In this embodiment, one end of the balance assembly 4 away from the voice coil 31 is sandwiched between the side portion 121 and the supporting arm 111, that is, the fixing section 422 of the auxiliary diaphragm 42 and the fixing portion 411 of the centering disk 41 are stacked, and sandwiched between the side portion 121 and the supporting arm 111, so that the voice coil 31 is conveniently electrically connected to an external circuit through the centering disk 41 and/or the auxiliary diaphragm 42 while being fixed.

In the present embodiment, the case assembly 1 is configured as a two-part structure of the bottom case 11 and the outer case 12, so that the magnetic circuit system 2 and the vibration system 3 can be conveniently mounted and dismounted, and the convenience in mounting and dismounting the speaker unit 100 can be improved.

In one embodiment, as shown in fig. 3, 4 and 5, 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. Each of the side magnetic circuit portions 23 includes a side magnet 231 and a side magnetic conductive plate 232, the side magnet 231 is sandwiched between the magnetic conductive yoke 21 and the side magnetic conductive plate 232, and the side magnetic conductive plate 232 is connected to the bottom portion 122 through a connecting portion 233.

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 structural outline of each side magnet 231 and each side magnetic conductive plate 232 is the same, and the side magnets 231 and the side magnetic conductive plates 232 can be selected to be of ring structures.

As shown in fig. 3, each side magnetic conductive plate 232 is connected to the bottom 122 of the housing 12 through a connecting portion 233, and an avoiding space 123 is formed between the other edges of the side magnetic conductive plates 232 and the bottom 122. Meanwhile, the elastic portion 412 of the spider 41 extends to the gap 24 along the avoiding space 123 and is connected to the voice coil 31, so that the length of the elastic portion 412 is increased, the local stress of the elastic portion 412 is reduced, the fatigue resistance of the spider 41 is improved, and the spider 41 is prevented from cracking or the conductive layer is prevented from being broken.

In this embodiment, the materials of the casing 12 and the side magnetic conductive plate 232 can be selected from metal materials, so as to be beneficial to improving the heat conduction and dissipation effects. It can be understood that the housing 12 is arranged in a rectangular frame structure, the housing 12 has two long sides and two short sides, and the side magnetic circuit portions 23 include four, that is, four side magnetic conductive plates 232 of the four side magnetic circuit portions 23 are respectively connected with two long sides and two short sides of the housing 12. At this time, a gap 24 is formed between the side magnetic conductive plate 232 connected to the long side of the casing 12 and the side magnetic conductive plate 232 connected to the short side of the casing 12. This facilitates the positioning of the centering holder 41 and the auxiliary diaphragm 42 of the balance assembly 4 in correspondence with the gap 24.

In one embodiment, as shown in fig. 3, the casing 12 and the side magnetic plate 232 are an integral structure. It can be understood that, by such an arrangement, on the one hand, the processing technology of the casing 12 and the edge magnetic conductive plate 232 is simplified, and meanwhile, the connection strength between the casing 12 and the edge magnetic conductive plate 232 is also improved.

In one embodiment, as shown in fig. 1, 3, 4 and 5, the diaphragm 32 includes a central portion 321, a corrugated portion 322 surrounding the central portion 321, and a fixing portion 323 surrounding the corrugated portion 322. In this embodiment, the hinge portion 322 protrudes downward, and the fixing portion 323 includes a downward extending flange fixedly connected to the outer sidewall of the side portion 121.

It can be understood that the diaphragm 32 includes a fixed portion 323, a ring-folded portion 322 and a central portion 321, which are connected in sequence, the central portion 321 of the diaphragm 32 is located in the middle of the ring-folded portion 322, the fixed portion 323 is located on a side of the ring-folded portion 322 away from the central portion 321, the central portion 321 of the diaphragm 32 is formed with an opening, and the reinforcing portion 33 is disposed corresponding to the opening and connected to the central portion 321 of the diaphragm 32.

In this embodiment, one end of the voice coil 31 is connected to the reinforcing portion 33, so as to be connected to the diaphragm 32 through the reinforcing portion 33, and the other end of the voice coil 31 is connected to the centering pad 41 and the auxiliary diaphragm 42 of the balance assembly 4, so as to realize the stable fixation of the voice coil 31, thereby ensuring that the voice coil 31 realizes vertical vibration and avoiding the voice coil 31 from swinging left and right in the vibration process.

In this embodiment, the central portion 321 of the diaphragm 32 includes an inner ring portion integrally disposed with the annular bending portion 322 and a reinforcing portion 33 fixedly connected to the inner ring portion. It is understood that the inner ring portion may be a flat plate structure connected as a whole, such that the inner ring portion has an upper side and a lower side which are oppositely disposed, and in this case, the reinforcing portion 33 is connected with the upper side or the lower side, so that the central portion 321 of the diaphragm 32 is reinforced by the reinforcing portion 33.

In an embodiment, as shown in fig. 3 to fig. 5, the inner ring portion may also be a hollow structure, that is, the inner ring portion encloses and forms an opening, the reinforcing portion 33 is disposed corresponding to the opening formed by the inner ring portion, in this case, the inner ring portion has an upper side and a lower side disposed oppositely, and a periphery of the reinforcing portion 33 is connected to the upper side or the lower side, so as to reinforce the central portion 321 of the diaphragm 32 by the reinforcing portion 33.

The utility model discloses a loudspeaker monomer 100 is through connecting the centering disk 41 of balanced subassembly 4 and the lateral wall of voice coil 31, makes centering disk 41 and voice coil 31 be parallel placement; make centering disk 41 and supplementary vibrating diaphragm 42 utilize glue to form the glue film and bond with the lateral wall of voice coil 31 simultaneously to improve voice coil 31's fixed, effectively prevent that voice coil 31 from taking place the swing. It can be understood that, so set up for the connection position of centering disk 41 and supplementary vibrating diaphragm 42 and voice coil 31 distributes in the lateral wall of voice coil 31, and with voice coil 31 parallel arrangement, thereby make things convenient for the lead wire solder joint of voice coil 31 to connect in the pad department of centering disk 41, can effectively avoid balanced subassembly 4 to occupy voice coil 31 bottom space, avoid the magnetic property loss. Meanwhile, by the arrangement, the relative displacement between the voice coil 31 and the centering disk 41 is avoided when the loudspeaker unit 100 works, the risk of wire breakage of the lead of the voice coil 31 is reduced, and the reliability margin is improved.

In one embodiment, the auxiliary diaphragm 42 is adhered to the lower portion of the spider 41, the corrugated rim section 421 of the auxiliary diaphragm 42 faces downward, and the lead of the voice coil 31 is electrically connected to the upper bonding pad of the spider 41. Of course, in other embodiments, the auxiliary diaphragm 42 is adhered to the upper portion of the spider 41, the corrugated rim section 421 of the auxiliary diaphragm 42 faces upward, and the lead of the voice coil 31 is connected to the lower bonding pad of the spider 41.

It can be understood that the damper 41 is disposed parallel to the voice coil 31, the bottom surface of the damper 41 is flush with the bottom surface of the voice coil 31, and the connecting section 423 on the inner side of the auxiliary diaphragm 42 is respectively bonded and fixed to the bottom surfaces of the damper 41 and the voice coil 31. At this time, the lead of the voice coil 31 is conducted with the upper bonding pad of the spider 41, the inner elastic part 412 of the spider 41 is connected and fixed with the side wall of the voice coil 31 by glue, and thus, through the fixing connection of the spider 41 and the auxiliary diaphragm 42 with the side wall and the bottom surface of the voice coil 31, the connection mode is more stable.

The utility model discloses still provide an electronic terminal, this electronic terminal include casing and speaker monomer 100, and this speaker monomer 100's concrete structure refers to aforementioned embodiment, because this electronic terminal has adopted the whole technical scheme of aforementioned all embodiments, consequently has all beneficial effects that the technical scheme of aforementioned embodiment brought at least, and the repeated description is no longer given here.

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 is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A speaker cell, comprising:

2. The speaker unit as claimed in claim 1, wherein the balance assembly further comprises an auxiliary diaphragm, the auxiliary diaphragm is disposed below the centering pad, one end of the auxiliary diaphragm is connected to the housing, and the other end of the auxiliary diaphragm passes through the gap and is connected to the voice coil.

3. The speaker unit as claimed in claim 2, wherein the auxiliary diaphragm includes a corrugated ring segment, and a fixing segment and a connecting segment integrally disposed with the corrugated ring segment, the fixing segment and the connecting segment are disposed at two opposite sides of the corrugated ring segment, the fixing segment is connected to the outer fixing portion and the housing, and the connecting segment passes through the gap to be connected to the elastic portion and the voice coil.

4. The speaker cell as claimed in claim 3, wherein the connection section and the elastic portion are connected to a side of the voice coil facing the gap by a glue layer;

5. The speaker unit as claimed in claim 2, wherein the speaker unit has a rectangular structure, the magnetic circuit system has four gaps corresponding to four corners of the speaker unit, and the four gaps are spaced apart from each other and communicate with the magnetic gaps;

6. The speaker unit as claimed in any one of claims 1 to 5, wherein the housing assembly further comprises a bottom shell, a support arm is convexly provided on a periphery of the bottom shell, and the magnetic yoke is provided on the bottom shell;

7. The speaker cell as claimed in any one of claims 1 to 5, wherein the central magnetic circuit portion comprises 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;

8. The speaker cell as claimed in claim 7, wherein the enclosure and the edge magnetic plate are of an integrally formed construction.

9. The speaker cell as claimed in any one of claims 1 to 5, wherein the diaphragm includes a central portion, a corrugated portion disposed around the central portion, and a fixing portion disposed around the corrugated portion;

the folded ring part is arranged in a downward protruding manner;

10. An electronic terminal, characterized in that, it comprises a housing and a speaker unit as claimed in any one of claims 1 to 9, wherein a cavity is provided in the housing, and the speaker unit is provided in the cavity.