CN209462600U - Loudspeaker and earphone - Google Patents
Loudspeaker and earphone Download PDFInfo
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- CN209462600U CN209462600U CN201920249745.XU CN201920249745U CN209462600U CN 209462600 U CN209462600 U CN 209462600U CN 201920249745 U CN201920249745 U CN 201920249745U CN 209462600 U CN209462600 U CN 209462600U
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Abstract
The utility model is suitable for electroacoustic transduction member arts, provides a kind of loudspeaker and earphone.Wherein, loudspeaker, including vibrational system and magnetic circuit system, the vibrational system includes sound film, speech coil framework, coil, lower coil and connection terminal, the coil and the lower coil are wound around on the speech coil framework and positional relationship decibel is arranged up and down, the winding direction of the coil and the lower coil is on the contrary, the connection terminal is used for simultaneously to the coil and the lower coil output audio signal；The magnetic circuit system is for generating magnetism circuit, and the coil and the lower coil are respectively positioned in the magnetism circuit, and the magnetic line of force of the magnetism circuit at the coil and at the lower coil is to be arranged radially.The utility model coil opposite using direction of winding, it is possible to reduce eddy-current loss, and sound quality is improved, especially promote high frequency sound quality.
Description
Technical field
The utility model belongs to electroacoustic transduction member arts more particularly to a kind of loudspeaker and earphone.
Background technique
In modern sound electro-technical field, loudspeaker is also known as loudspeaker, is important transducing head, is common in various communications
In the electronic devices such as equipment, audio-visual devices.Inside loudspeakers are formed with magnetic field, by the coil suspension of conductive material production in loudspeaking
In the magnetic field of device.Due to the effect of Loulun magnetism, when the signal that voice coil contains sound characteristic changes, coil will appear
Oscillation phenomenon, to make a sound with sound film, realization converts electrical signals into sound.
It, therefore,, can be in coil according to the law of electromagnetic induction when coil moves in fixed magnetic field because there are resistance for coil
Middle generation induced current, which flows in coil generates Joule heat, makes conductor temp.-elevating, causes to be lost, referred to as eddy-current loss.
Utility model content
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of loudspeaker and earphone are provided,
It is intended to reduce the eddy-current loss of loudspeaker, improves coil service life.
The utility model provides a kind of loudspeaker, comprising:
Vibrational system generates sound for vibrating, and the vibrational system includes sound film, speech coil framework, coil, lower coil
And connection terminal, the sound film is tapered, and the speech coil framework presents the cylindrical shape of lower extension and the upper end and the sound film connect
Connect, the coil and the lower coil are wound around on the speech coil framework and are separated by arrangement, the coil and it is described under
The winding direction of coil on the contrary, the connection terminal for simultaneously to the coil and the lower coil output audio signal,
Wherein, the upper end of the coil and the lower coil be electrically connected with the connection terminal or the coil and it is described under
The lower end of coil is electrically connected with the connection terminal；
Magnetic circuit system, for generating magnetism circuit, wherein the coil and the lower coil are respectively positioned on the magnetism and return
In road, and the magnetic line of force of the magnetism circuit at the coil and at the lower coil is to be arranged radially.
Further, the magnetic circuit system includes the first magnetic circuit component for generating the first magnetism circuit and for generating
The second magnetic circuit component in the second magnetism circuit, the coil are located in first magnetism circuit, and first magnetism returns
The magnetic line of force of the road at the coil is arranged radially, and the lower coil is located in second magnetism circuit, and described second
The magnetic line of force of the magnetism circuit at the lower coil is arranged radially.
Further, the first magnetic circuit component includes upper washer, upper magnet and upper iron ring, the upper washer and it is described on
Magnet is fixedly installed up and down, and the upper iron ring is set in the periphery of the upper washer and the upper magnet, and with the upper washer
With the upper magnet there are upper magnetic gap, the coil is located in the upper magnetic gap；
The second magnetic circuit component includes lower washer, lower magnet and lower iron hoop, above and below the lower magnet and the lower washer
Fixed setting, the lower iron hoop are set in the periphery of the lower washer and the lower magnet, and with the lower washer and it is described under
There are lower magnetic gap, the lower coils to be located in the lower magnetic gap for magnet.
Further, the upper magnet and the lower magnet are wholely set.
Further, the upper iron ring and the lower iron hoop are wholely set.
Further, the line footpath of the coil and circle number are identical as the lower coil.
Further, the loudspeaker further includes support system, and the support system includes frame and fixed frame, the basin
Frame is fixed on above the fixed frame, and the frame is plate structure and is enclosed a cavity, fixed frame table on it
The inner cavity for communicating with the cavity and being used to accommodate the magnetic circuit system is offered downwards；
Wherein, sound film upper end is fixedly connected with the frame, and lower end is fixedly connected with the speech coil framework, described
Vibrational system further includes playing wave, and described bullet wave one end connect the bullet that the other end is fixedly connected with the frame with the speech coil framework
Wave, the top for playing wave and being located at the coil.
Further, the fixed frame offers downwards the evacuation for avoiding the speech coil framework in the bottom of chamber of the inner cavity
Hole.
The utility model also provides a kind of earphone, including such as above-mentioned loudspeaker.
The study found that coil moves in fixed magnetic field generates eddy-current loss, in addition to generating coil heating to reduce line
Except the service life and receiving power of circle, if vortex demagnetizing effect is very strong, the reduction of electroacoustic transduction element sensitivity will lead to,
To influence the sound quality of sound quality, especially high frequency.The utility model coil opposite using direction of winding, it is possible to reduce vortex damage
Consumption, and sound quality is improved, especially promote high frequency sound quality.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the explosive view for the loudspeaker that the utility model embodiment one provides；
Fig. 2 is the sectional view for the loudspeaker that the utility model embodiment one provides.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Vibrational system | 210 | First magnetic circuit component |
| 110 | Sound film | 211 | Upper washer |
| 120 | Speech coil framework | 212 | Upper magnet |
| 130 | Coil | 213 | Upper iron ring |
| 140 | Lower coil | 214 | Upper magnetic gap |
| 150 | Connection terminal | 220 | Second magnetic circuit component |
| 160 | Play wave | 221 | Lower washer |
| 300 | Support system | 222 | Lower magnet |
| 310 | Frame | 223 | Lower iron hoop |
| 320 | Fixed frame | 224 | Lower magnetic gap |
| 321 | Avoid holes | 400 | Dust cap |
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It should also be noted that, being defined in the utility model embodiment according to the XYZ rectangular coordinate system established in Fig. 1:
It is defined as front positioned at the side of X-axis positive direction, the side positioned at X-axis negative direction is defined as rear；Positioned at the one of Y-axis positive direction
Side is defined as left, and the side positioned at Y-axis negative direction is defined as right；It is defined as top positioned at the side of Z axis positive direction, is located at
The side of Z axis negative direction is defined as lower section.
It is only phase each other it should also be noted that, the positional terms such as left and right, upper and lower in the utility model embodiment
It is reference to concept or with the normal operating condition of product, and should not be regarded as restrictive.
Referring to Fig.1 and 2, the utility model provides a kind of loudspeaker, including vibrational system 100, magnetic circuit system, support
System 300 and dust cap 400.
Our company finds that coil moves generation vortex in fixed magnetic field during how research and development improve audio sound quality
Loss, other than generating coil heating to reduce the service life of coil and bear power, if vortex demagnetizing effect is very
By force, it will lead to the reduction of electroacoustic transduction element sensitivity, to influence sound quality, the especially sound quality of high frequency.Therefore, by lowering whirlpool
Acoustical quality can be improved in stream loss.Then eddy-current loss is being reduced by vibrational system 100 and the optimization design of magnetic circuit system
Improve the sound quality of amplifier simultaneously.
Vibrational system 100 generates sound for vibrating, and vibrational system 100 includes sound film 110, speech coil framework 120, coil
130, lower coil 140 and connection terminal 150, sound film 110 are taper, and speech coil framework 120 is the cylindrical shape extended up and down and thereon
End is connect with sound film 110, and coil 130 and lower coil 140 are wound around on speech coil framework 120 and are separated by arrangement up and down, and online
Circle 130 and the winding direction of lower coil 140 are on the contrary, connection terminal 150 is used to export to coil 130 and lower coil 140 simultaneously
Audio signal, wherein the upper end of coil 130 and lower coil 140 be electrically connected respectively with connection terminal 150 or coil 130 and
The lower end of lower coil 140 is electrically connected with connection terminal 150 respectively.Pass through winding contrary coil 130 and lower coil 140
Setting so that audio signal generate when passing through coil 130 and lower coil 140 simultaneously it is opposite polarity as a result, to reduce
Eddy-current loss improves high frequency sound quality.
Magnetic circuit system is for generating magnetism circuit, wherein and coil 130 and lower coil 140 are respectively positioned in magnetism circuit, and
The magnetic line of force of the magnetism circuit at coil 130 and at lower coil 140 is to be arranged radially.The setting of radial magnetic field ensures online
Circle 130 and lower coil 140 can be moved more linearly in magnetism circuit under big stroke, to generate preferable sound.
In the present embodiment, the line footpath of coil 130 and circle number are identical as lower coil 140.The design makes audio signal
The opposite in phase after coil 130 and lower coil 140, is further reduced eddy-current loss.Coil 130 and lower coil 140 by
Diameter is that the enameled wire coiling of 0.05-0.06 forms.Enameled wire is chosen as common copper cash, OFC copper wire, aluminum steel, copper-clad aluminum conductor etc..
In the present embodiment, magnetic circuit system includes the first magnetic circuit component 210 for generating the first magnetism circuit and for producing
The second magnetic circuit component 220 in raw second magnetism circuit, coil 130 are located in the first magnetism circuit, and the first magnetism circuit in
The magnetic line of force at coil 130 is arranged radially, and lower coil 140 is located in the second magnetism circuit, and the second magnetism circuit is in offline
The magnetic line of force enclosed at 140 is arranged radially.Coil 130 and lower coil 140 are located in independent magnetism circuit, thus effectively
The sex character parameter in each magnetism circuit of independent control, and improve Magnetic Induction Density Distribution situation.
Referring to figure 2., the first magnetic circuit component 210 includes upper washer 211, upper magnet 212 and upper iron ring 213, upper washer 211
Be fixedly installed with upper about 212 magnet, upper iron ring 213 is set in the periphery of washer 211 and upper magnet 212, and with upper washer
211 and upper magnet 212 there are upper magnetic gap 214, coil 130 is located in upper magnetic gap 214.In this illustrated embodiment, upper washer 211
To be cylindric, upper magnet 212 be it is cylindric, upper washer 211 is fixed on the top of magnet 212, and upper iron ring 213 is annular shape,
It is set in the outside of washer 211 and upper magnet 212, and is formed and is accommodated in coil 130 with upper magnet 212 and upper washer 211
The upper magnetic gap 214 of lower movement (axial movement).
Second magnetic circuit component 220 includes lower washer 221, lower magnet 222 and lower iron hoop 223, lower magnet 222 and lower washer
About 221 fixed settings, lower iron hoop 223 are set in the periphery of lower washer 221 and lower magnet 222, and with lower washer 221 and lower magnetic
There are lower magnetic gap 224, lower coils 140 to be located in lower magnetic gap 224 for iron 222.In this illustrated embodiment, lower washer 221 be it is cylindric,
Lower magnet 222 be it is cylindric, lower magnet 222 is fixed on the top of lower washer 221, and lower iron hoop 223 is annular shape, is set in lower China
The outside of department 221 and lower magnet 222, and formed with lower magnet 222 and lower washer 221 and accommodate the up and down motion of coil 130 (axially
Movement) lower magnetic gap 224.
Further, upper magnet 212 and lower magnet 222 are wholely set.Be wholely set simplify structure to save manufacture at
This.
Further, upper iron ring 213 and lower iron hoop 223 are wholely set.Be wholely set simplify structure to save manufacture at
This.
The material of sound film 110 can be plastic foil, metal film, wood film, biomembrane or paper film, and plastic foil may be selected to be
PET, PEN, PEI, PI, LCP, PEEK, PC, PPS or PAR；The material of metal film may be selected to be aluminium alloy, titanium alloy or beryllium and close
Gold.In addition, unlike material sound film 110 has different elasticity modulus, interior damping, Poisson's ratio, thickness, density etc., these are different straight
Connecing influences loudspeaker quality factor Q value, causes loudspeaker difference quality.High rigidity and elastomeric diaphragm, possess preferable quality such as:
Transient state, sensitivity, frequency response etc..It can select different types of sound film 110 according to actual needs as a result,.
Referring to Fig.1 and 2, loudspeaker further includes frame 310 and fixed frame 320, frame 310 is fixed on fixed frame 320
Top, frame 310 is plate structure and is enclosed a cavity, and surface offers downwards and cavity phase fixed frame 320 on it
Lead to and be used to accommodate the inner cavity of magnetic circuit system；
Wherein, 110 upper end of sound film is fixedly connected with frame 310, and lower end is fixedly connected with speech coil framework 120, vibration system
System 100 further includes playing wave 160, plays 160 one end of wave and connect the bullet wave that the other end is fixedly connected with frame 310 with speech coil framework 120
160, play the top that wave 160 is located at coil 130.
Frame 310 is that sound film 110 provides fixed pivot, and frame 310 and fixed frame 320 are enclosed protection internal components
Shell, and influence of the outside noise to vibrational system 100 is isolated with the enclosing of sound film 110.
The setting of wave 160 is played, provides more fulcrums for the fixation of speech coil framework 120 to ensure coil 130 in upper magnetic
Correct position in lower magnetic gap 224 of gap 214, lower coil 140 and guarantee coil 130 and lower coil 140 in stress, vibration
System 100 vertically (axial direction) moves back and forth, and plays wave 160, coil 130, lower coil 140 and the co-determination of sound film 110 and raise
The resonance efficiency of sound device.In addition, the setting for playing wave 160 prevents dust from entering in upper magnetic gap 214 and lower magnetic gap 224.
Referring to figure 2., fixed frame 320 offers downwards the avoid holes 321 of evacuation speech coil framework 120 in the bottom of chamber of inner cavity.
Avoid holes 321 are annular groove, when the depth and width design of avoid holes 321 ensures that speech coil framework 120 is moved downward to minimum point
Still there are distances with 321 bottom hole of avoid holes for speech coil framework 120, contact to avoid speech coil framework 120 with avoid holes 321 and generate noise
Influence to loudspeaker tonequality.
Referring to figure 2., dust cap 400 is flexible material support, and floor projection is circle, and its surrounding and sound film 110 are solid
Fixed connection, falls into loudspeaker to avoid dust.
Embodiment two
The utility model also proposes a kind of earphone, which includes the loudspeaker with embodiment one, loudspeaker it is specific
Structure is referring to above-described embodiment one.It is same to have since earphone uses whole technical solutions of above-mentioned all embodiments one
There are all beneficial effects brought by the technical solution of above-described embodiment, this is no longer going to repeat them.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modification, equivalent replacement or improvement etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of loudspeaker characterized by comprising
Vibrational system generates sound for vibrating, and the vibrational system includes sound film, speech coil framework, coil, lower coil and company
Connecting terminal, the sound film is tapered, and the speech coil framework presents the cylindrical shape of lower extension and the upper end is connect with the sound film, institute
It states coil and the lower coil is wound around on the speech coil framework and is separated by arrangement, the coil and the lower coil
Winding direction is on the contrary, the connection terminal is used for simultaneously to the coil and the lower coil output audio signal, wherein institute
The upper end for stating coil and the lower coil be electrically connected with the connection terminal or the coil and the lower coil under
End is electrically connected with the connection terminal；
Magnetic circuit system, for generating magnetism circuit, wherein the coil and the lower coil are respectively positioned on the magnetism circuit
It is interior, and the magnetic line of force of the magnetism circuit at the coil and at the lower coil is to be arranged radially.
2. loudspeaker as described in claim 1, which is characterized in that the magnetic circuit system includes for generating the first magnetism circuit
The first magnetic circuit component and the second magnetic circuit component for generating the second magnetism circuit, the coil be located at first magnetism
In circuit, and the magnetic line of force of first magnetism circuit at the coil is arranged radially, and the lower coil is located at described the
In two magnetism circuits, and the magnetic line of force of second magnetism circuit at the lower coil is arranged radially.
3. loudspeaker as claimed in claim 2, which is characterized in that the first magnetic circuit component include upper washer, upper magnet and
Upper iron ring, the upper washer and the upper magnet up and down be fixedly installed, the upper iron ring be set in the upper washer and it is described on
The periphery of magnet, and with the upper washer and the upper magnet there are upper magnetic gap, the coil is located in the upper magnetic gap；
The second magnetic circuit component includes lower washer, lower magnet and lower iron hoop, and the lower magnet and the lower washer are fixed up and down
Setting, the lower iron hoop are set in the periphery of the lower washer and the lower magnet, and with the lower washer and the lower magnet
There are lower magnetic gap, the lower coil is located in the lower magnetic gap.
4. loudspeaker as claimed in claim 3, which is characterized in that the upper magnet and the lower magnet are wholely set.
5. loudspeaker as claimed in claim 3, which is characterized in that the upper iron ring and the lower iron hoop are wholely set.
6. loudspeaker as claimed in claim 1 to 5, which is characterized in that the line footpath of the coil and circle number are and institute
It is identical to state lower coil.
7. loudspeaker as claimed in claim 6, which is characterized in that the loudspeaker further includes support system, the support system
System includes frame and fixed frame, and the frame is fixed on above the fixed frame, and the frame is plate structure and is enclosed
One cavity, surface offers downwards and communicates with the cavity and be used to accommodate in the magnetic circuit system fixed frame on it
Chamber；
Wherein, sound film upper end is fixedly connected with the frame, and lower end is fixedly connected with the speech coil framework, the vibration
System further includes playing wave, and described bullet wave one end connect the bullet wave that the other end is fixedly connected with the frame with the speech coil framework,
The top for playing wave and being located at the coil.
8. loudspeaker as claimed in claim 7, which is characterized in that the fixed frame offers downwards in the bottom of chamber of the inner cavity
Avoid the avoid holes of the speech coil framework.
9. a kind of earphone, which is characterized in that including loudspeaker as described in any of the claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920249745.XU CN209462600U (en) | 2019-02-27 | 2019-02-27 | Loudspeaker and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920249745.XU CN209462600U (en) | 2019-02-27 | 2019-02-27 | Loudspeaker and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209462600U true CN209462600U (en) | 2019-10-01 |
Family
ID=68046918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920249745.XU Active CN209462600U (en) | 2019-02-27 | 2019-02-27 | Loudspeaker and earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209462600U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114466289A (en) * | 2022-02-18 | 2022-05-10 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN114466288A (en) * | 2022-02-18 | 2022-05-10 | 歌尔股份有限公司 | Speaker and electronic apparatus |
-
2019
- 2019-02-27 CN CN201920249745.XU patent/CN209462600U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114466289A (en) * | 2022-02-18 | 2022-05-10 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN114466288A (en) * | 2022-02-18 | 2022-05-10 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN114466289B (en) * | 2022-02-18 | 2024-03-12 | 歌尔股份有限公司 | Speaker and electronic device |
| CN114466288B (en) * | 2022-02-18 | 2024-03-12 | 歌尔股份有限公司 | Speaker and electronic device |
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