CN109379683A - Sounding device - Google Patents
Sounding device Download PDFInfo
- Publication number
- CN109379683A CN109379683A CN201811314572.1A CN201811314572A CN109379683A CN 109379683 A CN109379683 A CN 109379683A CN 201811314572 A CN201811314572 A CN 201811314572A CN 109379683 A CN109379683 A CN 109379683A
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- CN
- China
- Prior art keywords
- coil
- magnetic
- sounding device
- voice
- voice coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004804 winding Methods 0.000 claims description 20
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001629 suppression Effects 0.000 description 7
- 230000005672 electromagnetic field Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention discloses a kind of sounding devices.The sounding device includes: vibration component, and the vibration component includes vibrating diaphragm and voice coil, and the voice coil is connected to the side of the vibrating diaphragm, and the edge of the vibrating diaphragm is fixed in the sounding device, and the voice coil is configured to be passed through voice signal；Magnetic circuit system is formed with magnetic gap in the magnetic circuit system, has magnetic field in the magnetic gap, the voice coil is suspended from the magnetic gap；Ancillary coil, the ancillary coil are arranged in the magnetic gap, and the ancillary coil is configured to be passed through auxiliary signal, to generate electromagnetic force to the voice coil.Of the invention one has technical effect that, improves the acoustical behavior of sounding device.
Description
Technical field
The present invention relates to electroacoustic techniques fields, more particularly, to a kind of sounding device.
Background technique
Sounding device is the important acoustic element of portable electronic device, is converted for realizing electric signal and acoustical signal
Device is usually used in the electronic equipments such as mobile phone, computer.Sounding device is usually by vibrational system, magnetic circuit system and auxiliary system
It constitutes；Vibrational system includes top dome portion, vibrating diaphragm and voice coil, and the set-up mode of voice coil is the weight for influencing sounding device acoustical behavior
Want factor.
Fig. 1 shows the diagrammatic cross-section of sounding device in the prior art, as shown in Figure 1, voice coil 12 is located at by center magnetic
In the magnetic circuit system that iron 21, side magnet 22 and lower magnetic conductive board are constituted, when input electrical signal in voice coil 12, energized coils 12 exist
By the effect of electromagnetic induction in magnetic field, by the action of Ampere force, and vibrating diaphragm 11 is driven to vibrate.
But sounding device in this type of design, is easily led to due to the problems such as magnetic gap is uneven, voice coil vibrations amplitude is excessive
The problems such as acoustical behavior is poor.
Therefore, it is necessary to a kind of new sounding device be proposed, to overcome drawbacks described above.
Summary of the invention
It is an object of the present invention to provide a kind of new solutions of sounding device.
According to the first aspect of the invention, a kind of sounding device is provided, which includes:
Vibration component, the vibration component include vibrating diaphragm and voice coil, and the voice coil is connected to the side of the vibrating diaphragm, described
The edge of vibrating diaphragm is fixed in the sounding device, and the voice coil is configured to be passed through voice signal；
Magnetic circuit system is formed with magnetic gap in the magnetic circuit system, has magnetic field in the magnetic gap, the voice coil is suspended from
In the magnetic gap；
Ancillary coil, the ancillary coil are arranged in the magnetic gap, and the ancillary coil is configured to be passed through auxiliary
Signal is helped, to generate electromagnetic force to the voice coil.
Optionally, the ancillary coil is located at the bottom of the magnetic gap.
Optionally, the axis of the ancillary coil is overlapped with the axis of the voice coil.
Optionally, the ancillary coil is Chong Die along the projection of own axes with the voice coil along the projection of own axes.
Optionally, the magnetic circuit system includes side magnetic portion, center magnetic portion and lower magnetic conductive board, center magnetic portion and side magnetic portion
It is arranged on lower magnetic conductive board, side magnetic portion is centered around around center magnetic portion, and the magnetic gap is formed in side magnetic portion
Between the magnetic portion of center.
Optionally, the ancillary coil is arranged on the lower magnetic conductive board.
Optionally, the ancillary coil is arranged on the side wall towards side magnetic portion in center magnetic portion；
Alternatively, the ancillary coil is arranged on the side wall towards center magnetic portion in side magnetic portion.
Optionally, the ancillary coil be configured to the voice coil synchronize be passed through voice signal, the voice signal
As the auxiliary signal.
Optionally, the auxiliary signal is identical as the frequency of the voice signal, and the intensity of the auxiliary signal is less than institute
State voice signal.
Optionally, the direction of winding of the ancillary coil is opposite with the direction of winding of the voice coil；
Alternatively, the direction of winding of the ancillary coil is identical as the direction of winding of the voice coil.
Of the invention one has technical effect that, by the way that auxiliary line is arranged in the magnetic gap of sounding device magnetic circuit system
Circle, and signal is passed through to ancillary coil, the magnetic field generated after being powered using ancillary coil generates vibration humidification power to voice coil
Or vibration suppression active force, the Q value of sounding device is adjusted with this, promotes the acoustical behavior of sounding device.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the schematic diagram of the section structure of sounding device in the prior art；
Fig. 2 is the schematic diagram of the section structure for the sounding device that the specific embodiment of the invention provides.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 shows the schematic diagram of the section structure of sounding device in the prior art, and Fig. 2 shows specific embodiment parties of the present invention
The schematic diagram of the section structure for the sounding device that formula provides, the schematic shows ancillary coils in sounding device it is a kind of optionally
Set-up mode.Now by taking Fig. 1 and Fig. 2 as an example, structure, the principle etc. of sounding device of the present invention are described in detail.
The present invention provides a kind of sounding device, which includes vibration component 10, magnetic circuit system 20 and auxiliary line
Circle 30.The vibration component 10 includes vibrating diaphragm 11 and voice coil 12, and the edge of the vibrating diaphragm 11 is fixed in the sounding device, example
The edge of such as vibrating diaphragm is fixed in the shell of sounding device.The voice coil 12 is connected to the side of the vibrating diaphragm 11, the sound
Circle 12 is configured to be passed through voice signal, makes the vibration of voice coil 12 drive the vibration connecting with voice coil by the voice signal of input
Film 11 vibrates, to realize the conversion between electric signal and acoustical signal.Wherein, magnetic gap, magnetic are formed in the magnetic circuit system
Gap is the gap between internal magnetic circuit and side magnetic circuit, and the voice coil is suspended in the magnetic gap.
Further, the ancillary coil is arranged in the magnetic gap.The ancillary coil can be set in the magnetic
Bottom, middle part, two sides or any other position in gap, the height, shape of the number of turns, coil that the present embodiment winds ancillary coil
Shape etc. is not especially limited.The ancillary coil is configured to be passed through auxiliary signal, is made with generating electromagnetism to the voice coil
Firmly.
Wherein, the ancillary coil for being passed through auxiliary signal can generate vibration humidification power or vibration suppression to the voice coil
Production is exerted oneself.It is understood that vibration humidification power and vibration suppression active force are two kinds of contrary active forces, i.e.,
Vibrating humidification power is positive active force, and vibration suppression active force is opposition.In this way, ancillary coil can be to voice coil
Active force forward or backwards is generated, to adjust the acoustical behavior of sounding device.Since ancillary coil is arranged in magnetic gap
In, other spaces in sounding device can't be occupied, while adjusting sounding device Q value (qual ity factor), section
The space inside sounding device is saved.
Sounding device provided in this embodiment, by the way that ancillary coil is arranged in the magnetic gap of sounding device magnetic circuit system,
And signal is passed through to ancillary coil, the magnetic field generated after being powered using ancillary coil generates vibration humidification power or vibration to voice coil
Dynamic inhibiting effect power, the Q value of sounding device is adjusted with this.
Optionally, the ancillary coil is located at the bottom of the magnetic gap.It is described to being passed through auxiliary signal in ancillary coil
Auxiliary signal can be the electric signal identical or opposite as the voice signal direction of voice coil is passed through, and ancillary coil can generate one newly
Electromagnetic field.By changing the direction of winding in the direction for being passed through the electric signal of ancillary coil, ancillary coil, can obtain and former magnetic
The identical or opposite new electromagnetic field of field direction.In this way, the ancillary coil for being located at magnetic gap bottom can be to moving in magnetic field
Voice coil generates active force forward or backwards, and the Q value of sounding device is influenced with this, promotes the acoustical behavior of sounding device.By
Vibration can't be generated in ancillary coil, is the bottom that magnetic gap is set by ancillary coil, sounding device will not be generated not
Benefit influences, while saving the inner space of sounding device.
Specifically, the axis of the ancillary coil 30 is overlapped with the axis of the voice coil 12.As shown in Fig. 2, ancillary coil
30 are arranged in the bottom of magnetic gap, and the ancillary coil 30 is overlapped with the axis of the voice coil 12, is equivalent to, and are located at sounding device
The ancillary coil of bottom is oppositely arranged in magnetic gap with the voice coil.In this way, ancillary coil is positive to the generation of voice coil or anti-
To force effect it is more preferable, when generating positive active force to voice coil, can effectively improve the Q value of sounding device；When right
When voice coil generates reversed active force, the Q value of sounding device can be reduced, reduces the displacement of sounding device, improves distortion.
Preferably, the ancillary coil is Chong Die along the projection of own axes with the voice coil along the projection of own axes.This
Sample, voice coil and ancillary coil it is of same size, the fiting effect of voice coil and ancillary coil is more preferable, facilitate promoted ancillary coil tune
The efficiency for saving voice coil, is obviously improved the acoustical behavior of sounding device.
Further, the magnetic circuit system 20 includes side magnetic portion 22, center magnetic portion 21 and lower magnetic conductive board 23.The center magnetic
Portion 21 and side magnetic portion 22 are arranged on lower magnetic conductive board 23, and side magnetic portion 22 is centered around around center magnetic portion 21, the magnetic
Gap is formed between side magnetic portion 22 and center magnetic portion 21.In the present embodiment, center magnetic portion is made of centring magnet, Bian Ci
Portion is made of two side magnet, and two side magnet are separately positioned on the two sides of centring magnet, and side magnet and centring magnet are located at same
In one plane.In this way, foring magnetic gap between side magnet and centring magnet.
In a kind of possible embodiment, the ancillary coil 30 is arranged on the lower magnetic conductive board 23.Such as Fig. 2 institute
Showing, ancillary coil 30 is located at the bottom of magnetic gap, it is arranged on lower magnetic conductive board 23, by being passed through auxiliary signal to ancillary coil,
It can produce a new electromagnetic field.Wherein, ancillary coil is the direction of winding and sound of ancillary coil as made of copper wire coiling
It the coiling direction of circle can be identical or opposite；The direction of the auxiliary signal that is passed through and the voice signal for being passed through voice coil can in the same direction or
Reversely.
It is understood that in the present embodiment, auxiliary signal and voice signal in the same direction or be reversely in contrast example
Such as, when auxiliary signal and voice signal are the identical electric signals of frequency, the waveform of auxiliary signal is sine curve, voice signal
Waveform be cosine curve；Auxiliary signal and voice signal are reversed at this time, when the waveform phase of auxiliary signal and voice signal
Meanwhile the two is in the same direction.
Specifically, control direction of winding and be passed through the direction of signal, thus it is possible to vary ancillary coil to voice coil generate enhancing or
The active force of inhibition.When the direction of winding of the ancillary coil is identical as the direction of winding of the voice coil, meanwhile, the auxiliary letter
Number for when the consistent signal of consistent and frequency, the ancillary coil is configured to the voice coil with the voice signal direction
Generate vibration humidification power.The vibration humidification power can promote the Q value of sounding device.Alternatively, working as the ancillary coil
Direction of winding and the voice coil direction of winding on the contrary, simultaneously, the auxiliary signal is consistent with the voice signal direction
And the consistent signal of frequency, the ancillary coil are configured to generate vibration suppression active force to the voice coil.Vibration suppression
Production can firmly reduce the Q value and displacement of sounding device, improve distortion.
In alternatively possible embodiment, the ancillary coil 30 is arranged in described in the direction in center magnetic portion 21
On the side wall in side magnetic portion 22；Alternatively, the side towards center magnetic portion 21 in side magnetic portion 22 is arranged in the ancillary coil
On wall.That is, ancillary coil can be arranged in below voice coil, any position in magnetic gap, ancillary coil be can be
Side wall towards side magnetic portion or the side wall towards center magnetic portion, the setting position of the present embodiment ancillary coil, which is not done, to be had
Body is with no restrictions.
In this embodiment, the direction of winding of ancillary coil can be identical or opposite with the coiling direction of voice coil；It is logical
The direction of the auxiliary signal entered and the voice signal for being passed through voice coil can be in the same direction or reversed.When the direction of winding of the ancillary coil
It is identical as the direction of winding of the voice coil, meanwhile, the auxiliary signal is contrary and frequency one with the voice signal
The signal of cause, the ancillary coil are configured to generate vibration suppression active force to the voice coil.Alternatively, working as the auxiliary line
The direction of winding of the direction of winding of circle and the voice coil is on the contrary, simultaneously, the auxiliary signal is the direction with the voice signal
The opposite and consistent signal of frequency, the ancillary coil are configured to generate vibrating enhanced active force to the voice coil.
Optionally, the ancillary coil be configured to the voice coil synchronize be passed through voice signal, the voice signal
As the auxiliary signal.In this embodiment, ancillary coil can be by way of with voice coil serial or parallel connection and outer
The conducting of portion's circuit；Alternatively, ancillary coil is individually connected with external circuit.
In the present embodiment, the intensity of the auxiliary signal is less than the intensity of the voice signal.For example, when voice signal is
When electric signal, it is passed through electric signal to the ancillary coil that magnetic gap bottom is arranged in, a new electromagnetic field can be generated, this is new
Electromagnetic field can generate active force to voice coil, change direction of winding and electric signal direction of the ancillary coil relative to voice coil, can be with
The direction of adjustment effect power, so that the Q value of sounding device is promoted or reduce, to reach better acoustical behavior.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of sounding device characterized by comprising
Vibration component, the vibration component include vibrating diaphragm and voice coil, and the voice coil is connected to the side of the vibrating diaphragm, the vibrating diaphragm
Edge be fixed in the sounding device, the voice coil is configured to be passed through voice signal；
Magnetic circuit system is formed with magnetic gap in the magnetic circuit system, has magnetic field in the magnetic gap, and the voice coil is suspended from described
In magnetic gap；
Ancillary coil, the ancillary coil are arranged in the magnetic gap, and the ancillary coil is configured to be passed through auxiliary letter
Number, to generate electromagnetic force to the voice coil.
2. sounding device according to claim 1, which is characterized in that the ancillary coil is located at the bottom of the magnetic gap
Portion.
3. sounding device according to claim 1, which is characterized in that the axis of the axis of the ancillary coil and the voice coil
Line is overlapped.
4. sounding device according to claim 3, which is characterized in that projection and institute of the ancillary coil along own axes
The projection that voice coil is stated along own axes is overlapped.
5. sounding device according to claim 1, which is characterized in that the magnetic circuit system includes side magnetic portion, center magnetic portion
With lower magnetic conductive board, center magnetic portion and side magnetic portion are arranged on lower magnetic conductive board, and side magnetic portion is centered around center magnetic portion
Around, the magnetic gap is formed between side magnetic portion and center magnetic portion.
6. sounding device according to claim 5, which is characterized in that the ancillary coil is arranged in the lower magnetic conductive board
On.
7. sounding device according to claim 5, which is characterized in that center magnetic portion is arranged in the ancillary coil
Towards on the side wall in side magnetic portion；
Alternatively, the ancillary coil is arranged on the side wall towards center magnetic portion in side magnetic portion.
8. sounding device according to claim 1, which is characterized in that the ancillary coil is configured to and the voice coil
It synchronizes and is passed through voice signal, the voice signal is as the auxiliary signal.
9. sounding device according to claim 1, which is characterized in that the frequency of the auxiliary signal and the voice signal
Identical, the intensity of the auxiliary signal is less than the voice signal.
10. according to claim 1-9 it is one of any described in sounding device, which is characterized in that the coiling side of the ancillary coil
To opposite with the direction of winding of the voice coil；
Alternatively, the direction of winding of the ancillary coil is identical as the direction of winding of the voice coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811314572.1A CN109379683A (en) | 2018-11-06 | 2018-11-06 | Sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811314572.1A CN109379683A (en) | 2018-11-06 | 2018-11-06 | Sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109379683A true CN109379683A (en) | 2019-02-22 |
Family
ID=65397791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811314572.1A Pending CN109379683A (en) | 2018-11-06 | 2018-11-06 | Sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109379683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045281A1 (en) * | 2022-09-02 | 2024-03-07 | 瑞声光电科技(常州)有限公司 | Loudspeaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204031441U (en) * | 2014-08-07 | 2014-12-17 | 北京七九七华音电子有限责任公司 | Loud speaker |
| CN105812997A (en) * | 2016-03-14 | 2016-07-27 | 青岛海信电器股份有限公司 | Loudspeaker |
| CN205491114U (en) * | 2016-01-18 | 2016-08-17 | 瑞声光电科技(常州)有限公司 | Micro loudspeaker |
| CN205610920U (en) * | 2016-02-29 | 2016-09-28 | 歌尔股份有限公司 | Moving -coil speaker structure and audio playback device |
| CN106792400A (en) * | 2017-03-16 | 2017-05-31 | 深圳精拓创新科技有限公司 | Loudspeaker and the method for reducing loudspeaker total harmonic distortion |
| CN107820169A (en) * | 2017-10-18 | 2018-03-20 | 深圳精拓创新科技有限公司 | Loudspeaker and the method for improving loudspeaker sensitivity |
-
2018
- 2018-11-06 CN CN201811314572.1A patent/CN109379683A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204031441U (en) * | 2014-08-07 | 2014-12-17 | 北京七九七华音电子有限责任公司 | Loud speaker |
| CN205491114U (en) * | 2016-01-18 | 2016-08-17 | 瑞声光电科技(常州)有限公司 | Micro loudspeaker |
| CN205610920U (en) * | 2016-02-29 | 2016-09-28 | 歌尔股份有限公司 | Moving -coil speaker structure and audio playback device |
| CN105812997A (en) * | 2016-03-14 | 2016-07-27 | 青岛海信电器股份有限公司 | Loudspeaker |
| CN106792400A (en) * | 2017-03-16 | 2017-05-31 | 深圳精拓创新科技有限公司 | Loudspeaker and the method for reducing loudspeaker total harmonic distortion |
| CN107820169A (en) * | 2017-10-18 | 2018-03-20 | 深圳精拓创新科技有限公司 | Loudspeaker and the method for improving loudspeaker sensitivity |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045281A1 (en) * | 2022-09-02 | 2024-03-07 | 瑞声光电科技(常州)有限公司 | Loudspeaker |
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