CN207184807U - A kind of Microspeaker - Google Patents
A kind of Microspeaker Download PDFInfo
- Publication number
- CN207184807U CN207184807U CN201721212543.5U CN201721212543U CN207184807U CN 207184807 U CN207184807 U CN 207184807U CN 201721212543 U CN201721212543 U CN 201721212543U CN 207184807 U CN207184807 U CN 207184807U
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- Prior art keywords
- conductive
- microspeaker
- magnetic yoke
- magnetic
- damping
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Abstract
The utility model discloses a kind of Microspeaker, including shell and fixed vibrational system and magnetic circuit system in the housing, the magnetic circuit system offers connection Microspeaker inner space and exterior space goes out acoustic aperture, the loudspeaker further comprises damper assembly, the damper assembly includes damping piece and the fixture by damping piece fixation on a speaker, on the fixture formed with it is described go out acoustic aperture it is corresponding damping be open, the edge of the damping opening is positioned at the outside of the bore edges of speaking, the utility model damps the openings of sizes of opening by increasing, avoid hindering acoustic aperture to speak during damper assembly installation skew, adjust acoustic impedance simultaneously, improve acoustical behavior and the sensitivity of loudspeaker.
Description
Technical field
It the utility model is related to electroacoustic switch technology field.More particularly, to a kind of Microspeaker.
Background technology
Microspeaker has been widely used in the terminals such as earphone as a kind of device that can convert electrical energy into acoustic energy
In electronic installation.
As shown in Figure 1, Figure 2 shown in a and Fig. 2 b, Microspeaker mainly includes shell 11 and the magnetic circuit system being fixed in shell 11
System and vibrational system (not shown), wherein, magnetic circuit system includes conductive magnetic yoke 12, the magnet 13 being fixed in conductive magnetic yoke 12 and consolidated
Due to the magnetic conductive board 14 on magnet 13, vibrational system includes vibrating diaphragm and the voice coil loudspeaker voice coil combined with vibrating diaphragm.As Microspeaker is light
Thinning, the trend of miniaturization are more obvious, and Microspeaker inner space size is limited by more and more stricter, can be in magnetic circuit
System open up connected with Microspeaker exterior space go out acoustic aperture 15, to reduce the volume in Microspeaker.In order to improve
The fidelity effect of Microspeaker sounding, need to set damper assembly 16 on a speaker, and the damper assembly 16 generally includes to hinder
Damping member 162 and for damping piece 162 to be fixed into fixture 161 on a speaker, need to open up on fixture 161 with it is described go out
Damping opening 163 corresponding to acoustic aperture 15, to allow the flow to diffuse to outside loudspeaker by damping piece 162, current fixture
The size of damping opening 163 is usually arranged as identical with going out the size of acoustic aperture 15 on 161.In Microspeaker assembling process, adopt
With the damper assembly 16 of the form, in the case where the installation site of damper assembly 16 is offset, damping opening 163 can be with going out acoustic aperture 15
Misplace, a part for fixture 161 is located on the inside of the edge of acoustic aperture 15, as shown in a-quadrant in Fig. 3, can cause loudspeaker
Speak and be obstructed, influence the acoustical behavior of Microspeaker.
Accordingly, it is desirable to provide a kind of acoustic aperture that can improve out is spoken the Microspeaker of smooth degree, the sound of loudspeaker is improved
Learn performance.
Utility model content
The purpose of this utility model is to provide a kind of Microspeaker, by setting the resistance in damper assembly on fixture
Buddhist nun's openings of sizes, avoid fixture from hindering speaker voice giving, improve Microspeaker acoustical behavior.
To reach above-mentioned purpose, the utility model uses following technical proposals：
The utility model discloses a kind of Microspeaker, including shell and fixed vibrational system in the housing
And magnetic circuit system, what the magnetic circuit system offered connection Microspeaker inner space and exterior space goes out acoustic aperture, described to raise
Sound device further comprises damper assembly, and the damper assembly includes damping piece and fixes the damping piece on a speaker
Fixture, on the fixture formed with it is described go out the corresponding damping of acoustic aperture be open, the edge of the damping opening is located at institute
State the outside for bore edges of speaking.
Preferably, the damping piece is the screen cloth being covered on the fixture.
Preferably, the aperture opening ratio of the screen cloth is 1%~20%.
Preferably, the fixture is double faced adhesive tape.
Preferably, the edge of the damping opening and the outer peripheral distance of fixture are not less than 0.3mm.
Preferably, the magnetic circuit system includes conductive magnetic yoke, the magnet being placed in the conductive magnetic yoke and is placed in the magnet
On magnetic conductive board；
It is described go out acoustic aperture include the conductive magnetic yoke that is respectively formed on the conductive magnetic yoke, the magnet and the magnetic conductive board and go out
Acoustic aperture, magnet go out acoustic aperture and magnetic conductive board goes out acoustic aperture.
Preferably, the conductive magnetic yoke is exposed on the outside of loudspeaker, and it is exposed that the damper assembly is fixed on the conductive magnetic yoke
On outer surface.
Preferably, the conductive magnetic yoke, the magnet and the magnetic conductive board are fixed by gluing respectively.
Preferably, the conductive magnetic yoke is tabular, and the shell and the edge of the conductive magnetic yoke are fixedly installed；
It is described outer or the conductive magnetic yoke includes flat bottom wall and along the vertically extending side wall of the bottom wall edge
Shell and the side wall of the conductive magnetic yoke are fixedly installed.
Preferably, the vibrational system includes the vibrating diaphragm fixed on the housing and is incorporated in below the vibrating diaphragm
Voice coil loudspeaker voice coil, the lower end of the voice coil loudspeaker voice coil are placed in magnetic gap, and the magnetic gap is formed by magnetic circuit system or magnetic circuit system with shell.
The beneficial effects of the utility model are as follows：
The utility model makes the opening of damping opening by setting the outside for damping the edge being open and being located at bore edges of speaking
Size is more than bore open of speaking, and can provide certain deflection yoke for the installation of damper assembly, when damper assembly, which is installed, to be offset,
It is less prone to fixture and is located on the inside of bore edges of speaking the phenomenon being obstructed that causes to speak, and the size for increasing damping opening can adjust
Acoustic resistance, the sensitivity of product is improved, optimize frequency response curve.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the schematic diagram of Microspeaker in the prior art；
Fig. 2 a show the sectional view of Microspeaker damper assembly in the prior art；
Fig. 2 b show the top view of Microspeaker damper assembly in the prior art；
Fig. 3 shows the schematic diagram of Microspeaker damper assembly installation dislocation in the prior art；
Fig. 4 shows the schematic diagram according to the utility model Microspeaker specific embodiment；
Fig. 5 shows the schematic diagram according to the utility model Microspeaker specific embodiment damper assembly；
Reference：
11st, shell, 12, conductive magnetic yoke, 13, magnet, 14, magnetic conductive board, 15, go out acoustic aperture, 16, damper assembly, 161, fixture,
162nd, damping piece, 163, damping opening；
21st, housing, 22, conductive magnetic yoke, 23, magnet, 24, magnetic conductive board, 25, go out acoustic aperture, 26, damper assembly, 221, conductive magnetic yoke
Go out acoustic aperture, 231, magnet go out acoustic aperture, 241, magnetic conductive board go out acoustic aperture, 261, fixture, 262, damping piece, 263, damping opening.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not limit the scope of protection of the utility model with this.
Fig. 4 shows the schematic diagram according to the utility model Microspeaker specific embodiment, and Fig. 5 shows new according to this practicality
The schematic diagram of type Microspeaker specific embodiment damper assembly.
In the present embodiment, Microspeaker includes shell and fixed vibrational system in the housing (is not shown in figure
Go out) and magnetic circuit system.Wherein, shell includes housing 21 and the protecgulum (not shown) being correspondingly arranged.The vibrational system can
The vibrating diaphragm being fixed on including edge between the housing 21 and the protecgulum and the voice coil loudspeaker voice coil being incorporated in below the vibrating diaphragm, voice coil loudspeaker voice coil can
Two voice coil leads are drawn to electrically connect with external circuit.Electric energy is inputted voice coil loudspeaker voice coil by external circuit, and voice coil loudspeaker voice coil is in magnetic circuit system magnetic field
Effect is lower to drive diaphragm oscillations sounding.The magnetic circuit system include conductive magnetic yoke 22, the magnet 23 that is placed in the conductive magnetic yoke 22 with
And the magnetic conductive board 24 being placed on the magnet 23.The conductive magnetic yoke 22, the magnet 23 and the magnetic conductive board 24 preferably may be used
Fixed respectively by gluing.
In the present embodiment, the conductive magnetic yoke 22 is tabular, is fixed in the housing 21, the lower edge of housing 21 and institute
The edge fixed setting of conductive magnetic yoke 22 is stated, the housing 21 can use metal material, so as to the magnet 23 and the housing 21
Side wall between form the magnetic gap of accommodating voice coil loudspeaker voice coil one end, i.e., described magnetic gap is formed by magnetic circuit system and shell.This area skill
Art personnel are it is to be appreciated that the conductive magnetic yoke 22 may be alternatively formed to include flat bottom wall and vertically prolong along the bottom wall edge
The side wall stretched, now, housing can be fixedly installed with the conductive magnetic yoke side wall, i.e. the lower edge of housing and the conductive magnetic yoke side wall
Top edge is fixedly installed or case inside face is fixedly installed with the conductive magnetic yoke side-wall outer side face, and magnet 23 can be with conductive magnetic yoke 22
Side wall forms the magnetic gap of accommodating voice coil loudspeaker voice coil one end, i.e., described magnetic gap is formed by magnetic circuit system.
The vibrating diaphragm may include in the fixed part being fixed between the housing 21 and the protecgulum and the fixed part
The ring portion of edge connection and the central part positioned at ring portion center.Reinforcement part is may also be combined with the central part, the reinforcement
Portion may be incorporated in the upside or downside of the central part.The vibrating diaphragm it is lower can stationary tone circle, the reinforcement part, which is incorporated in, to shake
When center membrane portion is close to the side of voice coil loudspeaker voice coil, voice coil loudspeaker voice coil can be fixed on the join domain of central part, reinforcement part or central part and ring portion
On, when the reinforcement part is incorporated in vibrating diaphragm central part away from the side of voice coil loudspeaker voice coil, voice coil loudspeaker voice coil can be fixed on central part or central part and folding
On the join domain of ring portion.The difference for the acoustical generator type applied according to vibrating diaphragm, the reinforcement part of the vibrating diaphragm can be plane or
The structures such as spherical.In order to mitigate vibrating diaphragm weight, diaphragm oscillations performance is improved, can be by the central hollow out of central part.Wherein, center
The hollow out edge in portion need to be located at the inner side at the reinforcement part edge of fixation in connection, ensure that fretwork area is less than the benefit being bonded with it
The area of persistent erection center portion, to ensure the air-tightness of vibrating diaphragm.
In the present embodiment, opened up on the magnetic circuit system and go out acoustic aperture 25 vertically through magnetic circuit system, this goes out acoustic aperture 25
Microspeaker inside and outside space is connected, including is respectively formed in the conductive magnetic yoke 22, the magnet 23 and described leads
Conductive magnetic yoke on magnetic sheet 24 goes out acoustic aperture 221, magnet goes out acoustic aperture 231 and magnetic conductive board goes out acoustic aperture 241, and conductive magnetic yoke goes out acoustic aperture 221, magnetic
Iron goes out acoustic aperture 231 and magnetic conductive board goes out acoustic aperture 241 and is arranged concentrically, docks successively.The loudspeaker also includes damper assembly 26, institute
Stating damper assembly 26 includes damping piece 262 and the damping piece 262 is fixed into fixture 261 on a speaker, described solid
Determine on part 261 formed with it is described go out the corresponding damping opening 263 of acoustic aperture 25, the edge of the damping opening 263 positioned at it is described go out
The outside at the edge of acoustic aperture 25.In the present embodiment, the edge of damping opening 263 goes out the outside at the edge of acoustic aperture 25, damping described in
The openings of sizes of opening 263 is more than the aperture of acoustic aperture 25, misalignment margin can be provided for the installation of damper assembly 26, when damping group
During the installation skew of part 26, damping opening 263 no longer overlaps with going out the axis of acoustic aperture 25, shifts, and now, damping opening
263 edge is close to the center of acoustic aperture 25 is gone out, but in the range of certain deviation, and the edge of damping opening 263 is not over speaking
The edge of hole 25, so as to reduce the possibility for hindering acoustic aperture 25 to speak, strengthen acoustic aperture 25 and speak smooth degree, improve loudspeaker
Tonequality, while the required precision of the installation site of damper assembly 26 is not high, can reduce the assembly difficulty of loudspeaker.
As a preferred embodiment, damper assembly 26 is attached at the lower surface of the conductive magnetic yoke 22, damper assembly
26 horizontal outward flange is preferably no more than the horizontal outward flange of conductive magnetic yoke 22, not increase the size of loudspeaker.
As a preferred embodiment, the fixture 261 in the present embodiment damper assembly 26 uses double faced adhesive tape, damping
Part 262 is using the screen cloth being covered on the fixture 261.The damping piece 262 uses the screen cloth for facilitating gluing fixation, preferably
Ground selects screen cloth of the aperture opening ratio between 1%~20%.The damping opening 263 is formed on double faced adhesive tape, due to double faced adhesive tape
Two sides carries jelly, and the one side of the double faced adhesive tape can paste with the screen cloth fixes, the another side of the double faced adhesive tape can with it is exposed
Conductive magnetic yoke outer surface paste fix, using screen cloth on the one hand can play damping action, on the other hand introduced contaminants can be avoided to enter
Go out acoustic aperture or inside loudspeakers produce noise, influence the tonequality of loudspeaker.
In the present embodiment, fixture 261 uses double faced adhesive tape, and the jelly carried by double faced adhesive tape upper and lower surface can be with leading
Yoke 22 and the directly gluing fixation of screen cloth, technique is simple, and adhesion is strong.The fixture 261 can also use other materials shape
Into further being fixed by the modes such as gluing and damping piece 262 or conductive magnetic yoke 22.
The openings of sizes of the damping opening 263 can be set according to the actual requirements, it is preferable that the damping opening 263
The horizontal outer peripheral distance of horizontal outward flange and fixture 261 be not less than 0.3mm, with ensure fixture 261 and conductive magnetic yoke 22 with
And the fixing and bonding force of damping piece 262.By setting the openings of sizes of the damping opening 263, adjustable damper assembly is formed
Acoustic resistance, and then improve the sensitivity of loudspeaker, optimize the frequency response curve of loudspeaker.
In the present embodiment, the damper assembly 26 is shaped as circle with damping opening 263, is not limited in actual applications
The shape, can be according to the different flexibly settings of loudspeaker shapes of application.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in of the present utility model
The row of protection domain.
Claims (10)
1. a kind of Microspeaker, including shell and fixed vibrational system and magnetic circuit system in the housing, the magnetic
Road system offers connection Microspeaker inner space and exterior space goes out acoustic aperture, and the loudspeaker further comprises damping
Component, the damper assembly include damping piece and the fixture by damping piece fixation on a speaker, the fixture
On formed with it is described go out the corresponding damping of acoustic aperture be open, it is characterised in that spoken positioned at described at the edge of the damping opening
The outside of bore edges.
2. a kind of Microspeaker according to claim 1, it is characterised in that the damping piece is to be covered in the fixation
Screen cloth on part.
A kind of 3. Microspeaker according to claim 2, it is characterised in that the aperture opening ratio of the screen cloth be 1%~
20%.
4. a kind of Microspeaker according to claim 1, it is characterised in that the fixture is double faced adhesive tape.
5. a kind of Microspeaker according to claim 1, it is characterised in that the edge and fixture of the damping opening
Outer peripheral distance be not less than 0.3mm.
6. a kind of Microspeaker according to claim 1, it is characterised in that the magnetic circuit system includes conductive magnetic yoke, put
In the magnet in the conductive magnetic yoke and the magnetic conductive board being placed on the magnet；
It is described go out acoustic aperture include the conductive magnetic yoke that is respectively formed on the conductive magnetic yoke, the magnet and the magnetic conductive board and speak
Hole, magnet go out acoustic aperture and magnetic conductive board goes out acoustic aperture.
7. a kind of Microspeaker according to claim 6, it is characterised in that the conductive magnetic yoke is exposed to outside loudspeaker
Side, the damper assembly are fixed on the exposed outer surface of the conductive magnetic yoke.
8. a kind of Microspeaker according to claim 6, it is characterised in that the conductive magnetic yoke, the magnet and institute
Magnetic conductive board is stated to fix by gluing respectively.
9. a kind of Microspeaker according to claim 6, it is characterised in that the conductive magnetic yoke is tabular, described outer
Shell and the edge of the conductive magnetic yoke are fixedly installed；
Or the conductive magnetic yoke includes flat bottom wall and along the vertically extending side wall of the bottom wall edge, the shell with
The side wall fixed setting of the conductive magnetic yoke.
10. a kind of Microspeaker according to claim 1, it is characterised in that the vibrational system includes being fixed on institute
The vibrating diaphragm on shell and the voice coil loudspeaker voice coil being incorporated in below the vibrating diaphragm are stated, the lower end of the voice coil loudspeaker voice coil is placed in magnetic gap, the magnetic
Gap is formed by magnetic circuit system or magnetic circuit system with shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212543.5U CN207184807U (en) | 2017-09-19 | 2017-09-19 | A kind of Microspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212543.5U CN207184807U (en) | 2017-09-19 | 2017-09-19 | A kind of Microspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184807U true CN207184807U (en) | 2018-04-03 |
Family
ID=61748530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721212543.5U Active CN207184807U (en) | 2017-09-19 | 2017-09-19 | A kind of Microspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207184807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020024523A1 (en) * | 2018-08-01 | 2020-02-06 | 歌尔股份有限公司 | Sound generation apparatus and portable terminal |
-
2017
- 2017-09-19 CN CN201721212543.5U patent/CN207184807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020024523A1 (en) * | 2018-08-01 | 2020-02-06 | 歌尔股份有限公司 | Sound generation apparatus and portable terminal |
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