CN111800714B

CN111800714B - Speaker and electronic equipment

Info

Publication number: CN111800714B
Application number: CN201910666368.4A
Authority: CN
Inventors: 韦邦根; 王丽
Original assignee: Shenzhen Horn Audio Co Ltd
Current assignee: Shenzhen Horn Audio Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2022-03-25
Anticipated expiration: 2039-07-23
Also published as: CN111800714A

Abstract

The application is suitable for the technical field of raise one's voice, provides a speaker, includes: an accommodating cavity is arranged in the shell; the vibrating diaphragm is arranged in the containing cavity and is magnetic; the two voice coil assemblies are symmetrically arranged on two sides of the vibrating diaphragm and respectively form magnetic fields with the vibrating diaphragm, the magnetism of one side, close to the vibrating diaphragm, of the two voice coil assemblies is the same, and the magnetism of the voice coil assemblies can be changed to drive the vibrating diaphragm to vibrate. The application also provides an electronic device comprising the loudspeaker of any one of the above. The vibration of the vibrating diaphragm is realized by directly forming a magnetic field by the vibrating diaphragm and the voice coil assembly, so that the vibration flexibility of the vibrating diaphragm is improved; two voice coil loudspeaker voice coil subassembly symmetries set up the both sides at the diaphragm that shakes for the diaphragm that shakes is balanced to the response speed of two direction vibrations, and the diaphragm piece sets up to sheet structure, and the swing is very nimble, has improved the flexibility that the diaphragm piece vibrated, improves the effect and the performance of raising one's voice of speaker.

Description

Speaker and electronic equipment

Technical Field

The invention belongs to the technical field of loudspeaker, and particularly relates to a loudspeaker and electronic equipment.

Background

A speaker, also called a "horn", is a very common electroacoustic transducer, and is widely used in electronic devices capable of producing sound. The speakers are classified into electrodynamic speakers (i.e., moving coil speakers), electrostatic speakers (i.e., capacitive speakers), electromagnetic speakers (i.e., reed speakers), piezoelectric speakers (i.e., crystal speakers), etc. according to the transduction principle, most of the electronic devices on the market are moving coil speakers, and the moving coil speakers are generally conical in shape.

However, the diaphragm of the moving-coil speaker is generally set to be conical, and the conical diaphragm encloses to form an air chamber, which is easy to generate resonance to cause the performance of the speaker to be deteriorated; according to the conical shape of vibrating diaphragm, the magnetic field that the coil produced is hardly evenly distributed on the vibrating diaphragm to make the vibration flexibility of vibrating diaphragm not high, the effect of raising one's voice receives the influence. The volume and mass of the loudspeaker generally increase with the increase of power, and the loudspeaker is not easy to swing and has low portability.

Disclosure of Invention

The invention aims to provide a loudspeaker and electronic equipment, and aims to solve the technical problems that in the prior art, a diaphragm of a moving-coil loudspeaker easily generates an air chamber and has low flexibility, so that the loudspeaker has poor performance and poor loudspeaker effect.

To solve the above problem, an embodiment of the present invention provides a speaker, including:

a housing, in which an accommodating cavity is arranged;

the diaphragm sheet is arranged in the accommodating cavity and has magnetism;

the two voice coil assemblies are symmetrically arranged on two sides of the vibrating diaphragm and respectively form magnetic fields with the vibrating diaphragm, the magnetism of one side, close to the vibrating diaphragm, of the two voice coil assemblies is the same, and the magnetism of the voice coil assemblies can be changed to drive the vibrating diaphragm to vibrate.

Further, the diaphragm is the mixture of rubber and metal material spare, metal material spare includes one or more in ferrite magnet, alnico, samarium cobalt, neodymium iron boron and the magnet.

Further, the surface of the diaphragm sheet is rectangular, circular, triangular or polygonal.

Furthermore, the vibrating diaphragm is sleeved with a buffer ring, and the buffer ring is abutted to the inner side wall of the accommodating cavity and between the vibrating diaphragms.

Furthermore, the buffer ring comprises an inner edge part, an outer edge part and a folding part respectively connected between the inner edge part and the outer edge part, the cross section of the folding part is S-shaped, the inner edge part is connected with the vibrating diaphragm, and the outer edge part is connected with the inner side wall of the accommodating cavity.

Furthermore, the voice coil assembly comprises a metal plate and a voice coil arranged on one side of the metal plate, and the voice coil is located between the metal plate and the diaphragm.

Furthermore, the casing is convexly provided with a connecting terminal for connecting external equipment along the outer side wall, a lead wire is arranged on the voice coil in an extending mode, and the lead wire is conducted with the connecting terminal.

Furthermore, the number of the connecting terminals is two, the two connecting terminals are distributed on two opposite sides of the shell, the number of the leads is two, and the two leads are respectively and electrically connected with the two connecting terminals.

Furthermore, the shell is convexly provided with a spacing block along the outer side wall, and the spacing block is abutted between the connecting terminal and the shell.

The loudspeaker provided by the invention has the beneficial effects that: compared with the prior art, the two voice coil assemblies are respectively arranged on the two sides of the diaphragm, the diaphragm is provided with magnetism and can respectively form magnetic fields with the two voice coil assemblies, the magnetism of one side, close to the diaphragm, of the two voice coil assemblies is the same, the middle of the diaphragm can only swing towards one voice coil assembly, the magnetism of the voice coil assemblies can be changed, the middle of the diaphragm swings towards the other voice coil assembly, and the vibration of the diaphragm is realized by repeating the steps. The vibrating diaphragm can directly form a magnetic field with the voice coil assembly to enable the vibrating diaphragm to vibrate, and the vibration flexibility of the vibrating diaphragm is improved; two voice coil loudspeaker voice coil subassembly symmetries set up the both sides at the diaphragm that shakes for the diaphragm that shakes is balanced to the response speed of two direction vibrations, and the diaphragm piece sets up to sheet structure, and the swing is very nimble, has improved the flexibility that the diaphragm piece vibrated, improves the effect and the performance of raising one's voice of speaker.

The invention also provides electronic equipment comprising the loudspeaker.

According to the electronic equipment provided by the invention, by adopting the loudspeaker, the vibration flexibility of the vibrating diaphragm is improved, and the loudspeaker effect and the service performance of the electronic equipment are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective structural view of a speaker according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a voltage-time graph of a voice coil assembly of a speaker according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a diaphragm of the speaker of FIG. 1 vibrating under an electromagnetic field at a certain moment;

FIG. 5 is a schematic diagram of the diaphragm of the loudspeaker of FIG. 1 vibrating at another time with an electromagnetic field;

fig. 6 is a schematic perspective view of a voice coil assembly of a speaker according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

100-a loudspeaker; 1-a shell; 2-vibrating diaphragm; 3-a voice coil assembly; 4-a buffer ring; 11-a containment chamber; 12-a connection terminal; 13-a spacer; 14-a fastener; 15-fixing block; 16-a fixation hole; 17-step; 18-a second through-hole; 31-a metal plate; 32-a voice coil; 41-inner edge portion; 42-a fold; 43-outer edge portion; 311-a first via; 321-lead.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 6, a speaker 100 according to an embodiment of the present invention includes a housing 1, a diaphragm 2, and a voice coil assembly 3, and is applied to the field of speaker technology to solve the technical problem in the prior art that a diaphragm of a moving-coil speaker is easy to generate an air chamber and has low flexibility, so that the speaker performance is poor and the speaker effect is poor.

Specifically, a containing cavity 11 is arranged in the shell 1; the vibrating diaphragm sheet 2 is arranged in the accommodating cavity 11, and the vibrating diaphragm sheet 2 has magnetism; two voice coil loudspeaker voice coil subassemblies 3 are symmetrical respectively and are located the both sides of diaphragm 2 that shakes, and two voice coil loudspeaker voice coil subassemblies 3 form magnetic field with diaphragm 2 respectively, and two voice coil loudspeaker voice coil subassemblies 3 are close to the magnetism of one side of diaphragm 2 that shakes and are opposite, and voice coil loudspeaker voice coil subassembly 3's magnetism can change and partly swing towards two voice coil loudspeaker voice coil subassemblies 3 respectively with drive diaphragm 2 that shakes in order to realize the vibration of diaphragm 2 that shakes to realize speaker 100's effect of raising one's voice. Wherein, parallel arrangement each other between two voice coil loudspeaker voice coil subassemblies 3 and the vibrating diaphragm piece 2, and two voice coil loudspeaker voice coil subassemblies 3 respectively with the vibrating diaphragm piece 2 between the distance the same to realize that two voice coil loudspeaker voice coil subassemblies 3 set up for vibrating diaphragm piece 2 symmetry, so that the vibration of vibrating diaphragm piece 2 is more accurate. The voice coil assembly 3 can be electrically connected with an external device, and can acquire an electroacoustic signal of the external device and convert the external electroacoustic signal to form a magnetic field.

In the embodiment of the invention, the two voice coil assemblies 3 are respectively arranged at two sides of the vibrating diaphragm 2, the vibrating diaphragm 2 has magnetism and can respectively form magnetic fields with the two voice coil assemblies 3, the magnetism of one side of the vibrating diaphragm 2, which is close to the two voice coil assemblies 3, is the same, so that the middle part of the vibrating diaphragm 2 can only swing towards one voice coil assembly 3, the magnetism of the voice coil assemblies 3 can be changed, the middle part of the vibrating diaphragm 2 swings towards the other voice coil assembly 3, and the vibration of the vibrating diaphragm 2 is realized by repeating the steps. The vibration diaphragm 2 and the voice coil assembly 3 directly form a magnetic field to enable the vibration diaphragm 2 to vibrate, and the flexibility of vibration of the vibration diaphragm 2 is improved; two voice coil loudspeaker voice coil subassemblies 3 symmetry sets up in the both sides of vibrating diaphragm piece 2 for vibrating diaphragm piece 2 is balanced to the response speed of two directions vibrations, and vibrating diaphragm piece 2 sets up to the sheet structure, and the swing is very nimble, has improved the flexibility of vibrating diaphragm piece 2 vibration, improves speaker 100's the effect of raising one's voice and performance.

It should be noted that, in general, the effect of the full-moving-coil speaker 100 with narrow sounding frequency band is 100Hz to 12KHz, while the sounding frequency band that can be realized in the present application is wider, 10Hz to 25 KHz; generally, the frequency response curve of each frequency band is larger and is generally about +/-6dB, and the frequency response curve of the frequency band loudness frequency sweep frequency response curve is more balanced and is +/-1.5 dB.

Specifically, referring to fig. 3 to 5, in the present embodiment, the two voice coil assemblies 3 are disposed opposite to each other and symmetrically disposed on two sides of the diaphragm 2, and the two voice coil assemblies 3 have the same magnetism near one side of the diaphragm 2. Fig. 3 is a graph showing the voltage of the external electroacoustic signal at both ends of the voice coil assembly 3 as a function of time, when the voltage of the voice coil assembly 4 is positive, the magnetic properties of the two voice coil assemblies 3 are as shown in fig. 4, according to the magnetic properties of the two sides of the diaphragm 2 and the two voice coil assemblies 3, and the principle that like poles repel each other and opposite poles attract each other, the diaphragm 2 attracts one of the voice coil assemblies 3, but repels the other voice coil assembly 3, so that the middle portion of the diaphragm 2 can swing toward one of the voice coils 32, and the end portion of the diaphragm 2 is fixed on the inner side wall of the housing 1. As shown in fig. 3, when the voltage of the voice coil assembly 3 is negative, the magnetism of the voice coil assembly 3 changes, and at this time, the magnetism of the diaphragm 2 does not change, so that the diaphragm 2 and the voice coil assembly 3 which is originally attracted become a repulsive relationship, and the diaphragm and the voice coil assembly 3 which is originally repelled become an attractive relationship, and then the middle of the diaphragm 2 swings toward the other voice coil 32, and according to the sine relationship diagram of the voltage and the time of the diaphragm assembly 3 in fig. 3, the diaphragm 2 swings repeatedly toward the two voice coil assemblies 3 respectively along with the lapse of time, thereby realizing the vibration of the diaphragm 2 and realizing the loudspeaking effect.

Specifically, referring to the directions shown in fig. 4 and fig. 5, in the present embodiment, two voice coil assemblies 3 are respectively located on the upper side and the lower side of the diaphragm 2, the upper voice coil assembly 3 is the outer voice coil assembly 3 of the speaker 100, the lower voice coil assembly 3 is the inner voice coil assembly 3 of the speaker 100, and the upper side and the lower side of the diaphragm 2 have magnetic properties of S pole and N pole, respectively. When the voltage of the voice coil assembly 3 in fig. 3 is positive, as shown in fig. 4, the upper side and the lower side of the voice coil assembly 3 on the upper side are respectively an N pole and an S pole, and the lower side of the voice coil assembly 3 on the upper side has the same magnetism as the upper side of the diaphragm 2, so that the voice coil assembly 3 on the upper side and the diaphragm 2 are in a repulsive relationship, and the middle of the diaphragm 2 can swing toward the voice coil assembly 3 on the lower side under the pushing of the repulsive force; simultaneously, the upside of voice coil loudspeaker voice coil subassembly 3 of downside and the magnetism of downside are the S utmost point and the N utmost point respectively, and then the upside of voice coil loudspeaker voice coil subassembly 3 of downside is opposite with the magnetism of the downside of vibrating diaphragm piece 2, then for the relation of attracting mutually between voice coil loudspeaker voice coil subassembly 3 of downside and the vibrating diaphragm piece 2, then the middle part of vibrating diaphragm piece 2 swings towards voice coil loudspeaker voice coil subassembly 3 of downside. When the voltage of the voice coil assembly 3 in fig. 3 is negative, the magnetic properties of the diaphragm sheet 2 are not changed, as shown in fig. 5, the magnetic properties of the upper side and the lower side of the voice coil assembly 3 on the upper side are an S pole and an N pole, respectively, and the magnetic properties of the upper side and the lower side of the voice coil assembly 3 on the lower side are an N pole and an S pole, respectively, and similarly, the middle portion of the diaphragm sheet 2 swings toward the voice coil assembly 3 on the upper side. The voltage of the voice coil assembly 3 repeatedly changes with time, and then the middle part of the diaphragm 2 swings towards the voice coil assembly 3 on the upper side and the lower side respectively, so as to realize the vibration of the diaphragm 2.

Specifically, in this embodiment, the diaphragm 2 is a sheet-shaped elastic structure, and the sheet-shaped structure avoids the condition that the diaphragm 2 generates an air chamber, thereby improving the use performance of the speaker 100. The diaphragm 2 is of an elastic structure, so that the diaphragm 2 can adapt to and realize repeated swinging, high-strength swinging and weak swinging can be realized along with magnetic change, the vibration of the diaphragm 2 is realized, the detail density of the audio frequency can be well analyzed, and the original tone, timbre and loudness are restored.

Wherein, the design of the sheet structure of vibrating diaphragm 2 to and can form magnetic field and produce corresponding swing between vibrating diaphragm 2 and voice coil assembly 3, make vibrating diaphragm 2 can design the structure of light thin shape, even under the prerequisite that requires high power, the change of the quality and the volume of vibrating diaphragm 2 is not big, and the holistic quality of speaker 100 and volume also correspondingly reduce, are convenient for remove, improve speaker 100's portability.

Specifically, please refer to fig. 2, in this embodiment, the casing 1 is configured as a hollow structure, the step 17 is convexly disposed along the inner sidewall of the casing 1, the diaphragm 2 is fixed in the hollow casing 1, the edge of one side of the diaphragm 2 abuts against the step 17, the end of the diaphragm 2 abuts against the inner sidewall of the casing 1, the end of the diaphragm 2 is fixed on the inner sidewall of the casing 1, when the diaphragm 2 vibrates, the middle of the diaphragm 2 swings towards two sides, and the end of the diaphragm 2 is not changed.

Wherein, two voice coil loudspeaker voice coil subassemblies 3 are located the both sides of diaphragm 2 respectively, and two voice coil loudspeaker voice coil subassemblies 3 also are located casing 1 simultaneously, and the tip of voice coil loudspeaker voice coil subassembly 3 supports to hold and is fixed in on the inside wall of casing 1.

Further, in this embodiment, vibrating diaphragm 2 is the mixture of rubber and metal material spare, and metal material spare includes one or more in ferrite magnet, alnico, samarium cobalt, neodymium iron boron and the magnet. The rubber and the metal member are processed and synthesized and magnetized to form the vibrating diaphragm 2 having magnetism in this embodiment.

In this embodiment, the diaphragm 2 has the characteristics of high strength, high density, ultra-thin type, light weight, good flexibility, and good elasticity, and can swing along with the change of the magnetic field.

In another specific embodiment of this embodiment, the metal material is processed to form a metal sheet, and the metal sheet is adhered to the diaphragm formed of rubber, and then magnetized to form the diaphragm sheet 2. Of course, the metal foil and the rubber may be combined by mechanical pressing to form the diaphragm 2, and the forming process of the diaphragm 2 is not limited thereto.

Further, in the present embodiment, the diaphragm sheet 2 has a sheet-like structure, and the surface of the diaphragm sheet 2 is rectangular, circular, triangular or polygonal, and the shape of the surface of the diaphragm sheet 2 is not limited herein.

Further, referring to fig. 2 and fig. 3, in the embodiment, the diaphragm sheet 2 is sleeved with the buffer ring 4, the inner sidewall of the buffer ring 4 is connected to the edge of the diaphragm sheet 2, and the buffer ring 4 is abutted and fixed between the inner sidewall of the accommodating cavity 11 and the diaphragm sheet 2. The buffer ring 4 has the characteristics of high strength, light weight, good flexibility and good elasticity, and can reduce the damping between the diaphragm 2 and the inner side wall of the accommodating cavity 11. The buffer ring 4 provides a compression margin between the diaphragm 2 and the inner side wall of the accommodating cavity 11, so that the diaphragm 2 can well balance the swing amplitude when vibrating.

In this embodiment, the buffer ring 4 and the diaphragm sheet 2 are fixed by gluing or pressing by a machine, so that the buffer ring 4 and the diaphragm sheet 2 can be better matched with each other.

Specifically, in this embodiment, the cushion ring 4 is a rubber ring and is made of a rubber material, or the cushion ring 4 is made of a silicone material, and the material of the cushion ring 4 is not limited herein.

Specifically, referring to fig. 2 and fig. 4, in the embodiment, the buffer ring 4 extends from the diaphragm sheet 2 to the inner sidewall of the accommodating cavity 11 in a continuous bending shape, so as to improve the elasticity of the buffer ring 4.

Preferably, referring to fig. 2 and fig. 4 together, in this embodiment, the buffer ring 4 includes an inner edge portion 41, an outer edge portion 43 and a folding portion 42, the folding portion 42 is located between the inner edge portion 41 and the outer edge portion 43, and two ends of the folding portion 42 are respectively connected to the inner edge portion 41 and the outer edge portion 43, wherein the inner edge portion 41 is connected to the diaphragm 2, the outer edge portion 43 is connected to an inner sidewall of the accommodating cavity 11, a cross section of the folding portion 42 is S-shaped, and the S-shaped design of the folding portion 42 improves a buffering force and a space between the diaphragm 2 and the inner sidewall of the accommodating cavity 11.

Further, referring to fig. 2, in the present embodiment, the voice coil assembly 3 includes a metal plate 31 and a voice coil 32 disposed on one side of the metal plate 31, an end surface of the metal plate 31 abuts against and is fixed on an inner sidewall of the accommodating cavity 11, the voice coil 32 is located between the metal plate 31 and the diaphragm 2, and the metal plate 31 is used to assist in increasing the magnetic permeability of the voice coil 32, so as to more accurately vibrate the diaphragm 2.

Specifically, in this embodiment, the metal plate 31 is formed by machining electrical pure iron, and the magnetic permeability of the voice coil 32 is improved. The material of the metal plate 31 is not limited to the only one.

Specifically, in the present embodiment, the material of the voice coil 32 is an enameled copper wire.

Specifically, referring to fig. 2, in the present embodiment, the metal plate 31 is provided with a plurality of first through holes 311, and the first through holes 311 are respectively communicated with the accommodating cavity 11 and the exterior of the housing 1, so as to transmit the sound obtained by the vibration of the diaphragm 2 more uniformly and completely.

Further, referring to fig. 1 to 4, in the present embodiment, the housing 1 is convexly provided with a connection terminal 12 along an outer side wall, and the connection terminal 12 is used for electrically connecting with an external device and transmitting an electric sound signal of the external device to the voice coil assembly 3. Specifically, a lead 321 extends from the voice coil 32, a second through hole 18 is formed in the housing 1, and the lead 321 passes through the second through hole 18 from the accommodating cavity 11 and is electrically connected to the connection terminal 12, so that the lead 321 is electrically connected to the connection terminal 12. An electroacoustic signal of an external device is transmitted to the voice coil 32 through the connection terminal 12 and the lead 321 in sequence, and the voice coil 32 converts an electroacoustic signal voltage into a magnetic field and drives the diaphragm 2 to swing, so that the diaphragm 2 vibrates.

Preferably, referring to fig. 2 and fig. 4, in this embodiment, the number of the connection terminals 12 is two, the two connection terminals 12 are distributed on two opposite sides of the housing 1, the number of the leads 321 of each voice coil 32 is two, the two leads 321 are electrically connected to the two connection terminals 12 through the second through holes 18, respectively, the leads 321 at two ends of each voice coil 32 are electrically connected to an external device, so that the external device can form a voltage on the voice coil 32.

Further, referring to fig. 2 and fig. 4, in the embodiment, the housing 1 is convexly provided with the spacer 13 along the outer sidewall, the spacer 13 is fixed on the outer sidewall of the housing 1 by the fastening member 14, wherein the spacer 13 is disposed between the connection terminal 12 and the housing 1, and the spacer 13 abuts against one side of the connection terminal 12 close to the outer sidewall of the housing 1, so as to realize the isolation between the connection terminal 12 and the outer sidewall of the housing 1.

Specifically, in the present embodiment, the spacer 13 is made of an insulating material.

Further, referring to fig. 1 to 2, in the present embodiment, a fixing block 15 is disposed on the housing 1 along an end surface thereof, the fixing block 15 has a fixing hole 16, and the fixing hole 16 is used to fix the speaker 100 to an external device. The housing 1 is a fixing frame for fixing the speaker 100 as a whole.

The present invention further provides an electronic device, which includes a speaker 100, where the speaker 100 is the same as the speaker 100, and is not described herein again.

By adopting the above arrangement of the loudspeaker 100, the electronic device provided by the invention improves the flexibility of the vibration of the diaphragm 2, and improves the loudspeaker effect and the use performance of the electronic device.

Specifically, the electronic device includes an electronic device body and a speaker 100, wherein the electronic device body is a device to be generated, and the speaker 100 is fixed to the electronic device body by locking the fixing hole 16 with a locking member; and the electronic device body is electrically connected with the connection terminal 12, and the electroacoustic signal voltage of the electronic device body is transmitted to the voice coil 32 through the connection terminal 12 and the lead 321 in sequence, so that a magnetic field is formed between the diaphragm 2 and the voice coil 32, the diaphragm 2 can repeatedly swing, the vibration of the diaphragm 2 is realized, and the sound-raising effect of the loudspeaker 100 is realized.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A loudspeaker, comprising:

a housing, in which an accommodating cavity is arranged;

the vibrating diaphragm is arranged in the accommodating cavity, is magnetic and is magnetized;

the two voice coil assemblies are symmetrically arranged on two sides of the vibrating diaphragm and respectively form magnetic fields with the vibrating diaphragm sheet, and the vibrating diaphragm sheet and the voice coils directly form the magnetic fields to enable the vibrating diaphragm sheet to vibrate; the magnetism of one side of each voice coil assembly, which is close to the vibrating diaphragm, is the same, and the magnetism of each voice coil assembly can be changed to drive the vibrating diaphragm to vibrate; and the voice coil assemblies are symmetrically arranged relative to the vibrating diaphragm, so that the vibrating diaphragm vibrates more accurately.

2. The loudspeaker of claim 1 wherein the diaphragm is a mixture of rubber and a metallic material including one or more of ferrite magnets, alnico, samarium cobalt, neodymium iron boron, and magnets.

3. The loudspeaker of claim 1 wherein the surface of the diaphragm plate is rectangular, circular, triangular or polygonal.

4. The loudspeaker of claim 1, wherein the diaphragm is sleeved with a buffer ring, and the buffer ring abuts between an inner side wall of the accommodating cavity and the diaphragm.

5. The loudspeaker of claim 4, wherein the cushion collar includes an inner edge portion, an outer edge portion, and a folded portion connected between the inner edge portion and the outer edge portion, respectively, the folded portion having an S-shaped cross section, the inner edge portion being connected to the diaphragm, and the outer edge portion being connected to an inner sidewall of the receiving cavity.

6. A loudspeaker according to any one of claims 1 to 5, wherein the voice coil assembly comprises a metal plate and a voice coil disposed on one side of the metal plate, the voice coil being located between the metal plate and the diaphragm.

7. The speaker of claim 6, wherein the housing is provided with a connection terminal along an outer side wall thereof for connecting to an external device, and a lead wire is extended from the voice coil and is electrically connected to the connection terminal.

8. The speaker of claim 7, wherein the number of the connecting terminals is two, two of the connecting terminals are disposed on opposite sides of the housing, the number of the leads is two, and two of the leads are electrically connected to the two connecting terminals, respectively.

9. The speaker of claim 7, wherein the housing is provided with a spacer protruding along an outer sidewall, and the spacer abuts between the connection terminal and the housing.

10. An electronic device, characterized in that it comprises a loudspeaker according to any one of claims 1-9.