CN208143481U - A kind of electrostatic electroacoustic transducers - Google Patents
A kind of electrostatic electroacoustic transducers Download PDFInfo
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- CN208143481U CN208143481U CN201820588461.9U CN201820588461U CN208143481U CN 208143481 U CN208143481 U CN 208143481U CN 201820588461 U CN201820588461 U CN 201820588461U CN 208143481 U CN208143481 U CN 208143481U
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- electrode plate
- vibrating diaphragm
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- diaphragm coating
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Abstract
The utility model discloses a kind of electrostatic electroacoustic transducers, including electrode plate and vibrating diaphragm, the two sides of the vibrating diaphragm set gradually as the first vibrating diaphragm coating, vibrating diaphragm base and the second vibrating diaphragm coating, the electrode plate includes first electrode plate and second electrode plate, it is provided with first electrode plate on the outside of the first vibrating diaphragm coating, is provided with second electrode plate on the outside of the second vibrating diaphragm coating.This kind of utility model design is reasonable, it is easy to use, since the punching of the entrant sound on electrode plate is changed to regular hexagon, it and is in close paving shape, eliminate the dead angle Mi Pu of the punching of traditional round entrant sound, therefore the percent opening of electrode plate is greatly improved, and then significant increase sound through performance, again beneficial to the obtuse angle Mi Pu of regular hexagon, its sound is better than the close paving mode of other geometry through effect, and electric current is wide everywhere by way of route, therefore under high opening rate, electrode plate is still able to maintain excellent electrostatic field uniformity coefficient, the utility model is compact-sized, it is easy to operate, it is suitble to be widely popularized.
Description
Technical field
The utility model relates to speaker technology field, in particular to a kind of electrostatic electroacoustic transducers.
Background technique
At present electroacoustic transducer by transduction principle be divided into moving-coil type energy converter, moving-iron type energy converter, such as magnetic type energy converter and
Electrostatic transducer.
Electrostatic earphone is used as mid- to high-end product currently on the market, and the core component in electrostatic earphone is electrostatic electroacoustic transducing
Device.The transduction principle of conventional electrostatic formula electroacoustic transducer is to be placed in conductive diaphragm in fixed electrode plate to form capacitor, is passed through
Apply high voltage direct current bias on vibrating diaphragm conductive layer, and applies audible communication voltage on the electrode plate of two sides.Utilize positive negative electricity
The Coulomb force that field generates makes vibrating diaphragm forced vibration generate sound, and passes through the circular hole on the electrode plate of two sides for acoustic radiating
It goes out.
For basic performance, relative to the moving-coil type energy converter etc. generally used, the energy of this kind of electromagnetic transduction
Conversion effect rule is extremely low, and response frequency is also relatively poor.And electrostatic transducer can construct power effect rule and change close to 1 electroacoustic
Energy device, and there are excellent properties in acoustic frequency response frequency.
For higher levels of audio playback, the vibrating diaphragm of electrostatic transducer is extremely frivolous, and quality is minimum, it might even be possible to
Ignore inertia motion and the cutting vibrating of vibrating diaphragm, therefore it is with splendid dynamic response and careful expressive force；Meanwhile electroacoustic
The vibrational system area of energy converter is larger, effectively vibrates ten times or more that area is traditional moving-coil transducing structure, therefore it has
Bigger encephalic sound field effect, and real knot image force is more coagulated naturally.
And electrostatic transducer equally exists certain defect.Ideally, electrostatic transducer needs two electrode plates
Uniform high-voltage electrostatic field is provided to drive vibrating diaphragm, so that vibrating diaphragm is pushed enough chamber airs, and then generate enough acoustic pressures, this will
Ask pad electrode uniform and intensive as far as possible.And the air that diaphragm oscillations are pushed needs resistance small as far as possible when through electrode plate
Power.To reduce interference inhibition when electrode plate penetrates sound.In brief, the electrode plate punching of conventional electrostatic energy converter
There are huge contradictions for mode, improve electrode packing free ratio, will lead to electrostatic field intensity reduction, and uniformity is deteriorated.And reduce electrode
Packing free ratio can improve acoustic resistance, deteriorate sound through effect.Under circular opening mode traditional at present, the two can not get both,
Punching rate is in 20-40 or so.
Utility model content
The main purpose of utility model is to provide a kind of electrostatic electroacoustic transducers, can effectively solve in background technique
The problem of.
To achieve the above object, the technical solution that utility model is taken is：
A kind of electrostatic electroacoustic transducers, including electrode plate and vibrating diaphragm, the two sides of the vibrating diaphragm set gradually as the first vibration
Film coating, vibrating diaphragm base and the second vibrating diaphragm coating, the electrode plate include first electrode plate and second electrode plate, first vibration
It is provided with first electrode plate on the outside of film coating, second electrode plate, the vibrating diaphragm are provided on the outside of the second vibrating diaphragm coating
Be provided between first electrode plate conducting wire and annular block line, be also equipped between the vibrating diaphragm and second electrode plate conducting wire and
Annular blocks line, and gap, first electricity are not present between the first vibrating diaphragm coating, vibrating diaphragm base and the second vibrating diaphragm coating
The outside of pole plate and second electrode plate is provided with frame, and cage ring, the frame and cage ring are provided on the inside of the frame
It is ring structure.
Further, the surface of the first electrode plate and second electrode plate is provided with punching, the first electrode plate and
The punching areas of second electrode plate is regular hexagon, and the punching is positive hexagonal structure, and is arranged in the first electrode
Punch size on plate and second electrode plate is not identical.
Further, the first electrode plate and second electrode plate are circular plate structure, the first electrode plate and the
The diameter of two electrode plates is identical, and the center of circle is overlapped.
Further, the punching areas of the first electrode plate and second electrode plate is electric with first electrode plate and second respectively
Pole plate is in inscribed regular hexagon.
Further, the punching areas of the first electrode plate and second electrode plate and first electrode plate and second electrode plate
Not lap be provided with buffer area.
Further, the percent opening of the punching areas of the first electrode plate is 60%-80%, the second electrode plate
The percent opening of punching areas is 30%-50%.
Further, the first vibrating diaphragm coating and the arrangement of first electrode plate face, the second vibrating diaphragm coating and second
The arrangement of electrode plate face.
Further, the surface of the first vibrating diaphragm coating and the second vibrating diaphragm coating is provided with and first electrode plate and second
The corresponding punching of electrode plate.
Further, the percent opening of the punching areas of the first vibrating diaphragm coating is 20%-40%, the second vibrating diaphragm plating
The percent opening of the punching areas of layer is 10%-30%.
Further, the electrode plate is pcb board structure.
Compared with prior art, utility model has the advantages that：This kind of utility model design is reasonable, user
Just, since the punching of the entrant sound on electrode plate is changed to regular hexagon, and it is in close paving shape, eliminates rushing for traditional round entrant sound
The dead angle Mi Pu in hole, therefore the percent opening of electrode plate is greatly improved, and then significant increase sound through performance, again beneficial to just
The obtuse angle Mi Pu of hexagon, sound is better than the close paving mode of other geometry through effect, and electric current is wide everywhere by way of route, therefore
Under high opening rate, electrode plate is still able to maintain excellent electrostatic field uniformity coefficient, while first electrode plate and second electrode plate are non-
The percent opening of equivalent makes first electrode plate keep high opening rate and hinder in a low voice, outstanding sound-reducing performance is provided for user,
And second electrode plate improves the function and effect of electrostatic field intensity and Coulomb force then in keeping on the basis of exocoel pressing weighing apparatus, subtracts
The capacitor of small electrostatic loudspeaker itself reduces the load of electrostatic amplifier, designs electrostatic transducer with this structure, not only makes this
The frequency response of electroacoustic transducer is had excellent performance, moreover it is possible to which the advantages of reaching energy saving easily driving, the utility model is compact-sized, operation letter
It is single, it is suitble to be widely popularized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the electroacoustic transduction of utility model；
Fig. 2 is the structural schematic diagram of the first electrode plate of utility model；
Fig. 3 is the structural schematic diagram of the second electrode plate of utility model；
Fig. 4 is the structural schematic diagram of the vibrating diaphragm of utility model；
Fig. 5 is the structural schematic diagram of the first vibrating diaphragm coating of utility model；
Fig. 6 is the structural schematic diagram of the second vibrating diaphragm coating of utility model.
In figure：1, frame；2, cage ring；3, electrode plate；4, punching；5, conducting wire；6, buffer area；7, the first vibrating diaphragm coating；
8, the second vibrating diaphragm coating；9, vibrating diaphragm；10, first electrode plate；11, second electrode plate；12, vibrating diaphragm base.
Specific embodiment
Technical means, creative features, achievable purpose and effectiveness to realize utility model are easy to understand, and are tied below
Specific embodiment is closed, utility model is further described.
As shown in figures 1 to 6, a kind of electrostatic electroacoustic transducers, including electrode plate 3 and vibrating diaphragm 9, the two sides of the vibrating diaphragm 9 according to
Secondary to be set as the first vibrating diaphragm coating 7, vibrating diaphragm base 12 and the second vibrating diaphragm coating 8, the electrode plate 3 includes 10 He of first electrode plate
Second electrode plate 11, the outside of the first vibrating diaphragm coating 7 are provided with first electrode plate 10, the second vibrating diaphragm coating 8 it is outer
Side is provided with second electrode plate 11, and conducting wire 5 is provided between the vibrating diaphragm 9 and first electrode plate 10 and annular blocks line, described
It is also equipped with conducting wire 5 between vibrating diaphragm 9 and second electrode plate 11 and annular blocks line, the first vibrating diaphragm coating 7, vibrating diaphragm base 12
And second gap is not present between vibrating diaphragm coating 8, the external setting of the first electrode plate 10 and second electrode plate 11 is framed
Frame 1, the inside of the frame 1 are provided with cage ring 2, and the frame 1 and cage ring 2 are ring structure.
Wherein, the surface of the first electrode plate 10 and second electrode plate 11 is provided with punching 4, the first electrode plate 10
4 region of punching with second electrode plate 11 is regular hexagon, and the punching 4 is positive hexagonal structure, and is arranged described the
4 size of punching on one electrode plate 10 and second electrode plate 11 is not identical.
Wherein, the first electrode plate 10 and second electrode plate 11 are circular plate structure, 10 He of first electrode plate
The diameter of second electrode plate 11 is identical, and the center of circle is overlapped.
Wherein, 4 region of punching of the first electrode plate 10 and second electrode plate 11 respectively with first electrode plate 10 and
Two electrode plates 11 are in inscribed regular hexagon.
Wherein, the punching of the first electrode plate 10 and second electrode plate 11 and first electrode plate 10 and second electrode plate 11
The not lap in 4 regions is provided with buffer area 6.
Wherein, the percent opening in 4 region of punching of the first electrode plate 10 is 60%-80%, the second electrode plate 11
4 region of punching percent opening be 30%-50%.
Wherein, the first vibrating diaphragm coating 7 and the arrangement of 10 face of first electrode plate, the second vibrating diaphragm coating 8 and second
The arrangement of 11 face of electrode plate.
Wherein, the surface of the first vibrating diaphragm coating 7 and the second vibrating diaphragm coating 8 is provided with and first electrode plate 10 and second
The corresponding punching 4 of electrode plate 11.
Wherein, the percent opening in 4 region of punching of the first vibrating diaphragm coating 7 is 20%-40%, the second vibrating diaphragm coating
The percent opening in 84 region of punching is 10%-30%.
Wherein, the electrode plate 3 is pcb board structure.
It should be noted that shown in Figure 1, the present embodiment provides a kind of electroacoustic transducers and Conventional electro-acoustic energy converter knot
The identical part of structure is that the device is mainly made of 10 second electrode plate 11 of first electrode plate and vibrating diaphragm 9, first electrode plate 10
Vibrating diaphragm 9 is placed between second electrode plate 11, three outer is fixed, the outer of first electrode plate 10 and second electrode plate 11
Part has frame 1, is provided with cage ring 2 on the inside of frame 1, and the frame 1 and cage ring 2 are annular in shape, to avoid entrant sound is influenced.
Shown in Figure 2, the present embodiment provides a kind of electroacoustic transducer parts different with Conventional electro-acoustic transducer architecture
It is, which is followed successively by 10 vibrating diaphragm of first electrode plate, 9 second electrode plate 11, and in first electrode plate 10 and vibrating diaphragm 9, with
And between second electrode plate 11 and vibrating diaphragm 9, it is respectively formed the corresponding cyclic annular conducting wire 5 for blocking line and each layer.
Shown in Figure 4, the vibrating diaphragm 9 under the structure is followed successively by the first vibrating diaphragm coating 7, vibrating diaphragm base 12 and the plating of the second vibrating diaphragm
Gap is not present in layer 8 between first vibrating diaphragm coating 7 and the second vibrating diaphragm coating 8 and vibrating diaphragm base 12.
First electrode plate 10 is located at side, whole that circle is presented, and its center of circle is overlapped with the regular hexagon center of area of punching 4,
Circle, and each hole center of its punching 4, each hole with 10 punching 4 of first electrode plate is equally presented in first vibrating diaphragm coating 7
Center corresponds, correspondingly, each hole center of 8 punching 4 of the second vibrating diaphragm coating, with its 7 punching 4 of first layer vibrating diaphragm coating
Each hole center correspond；Each hole center of 11 punching 4 of second electrode plate, it is each with its 8 punching 4 of the second vibrating diaphragm coating
Hole center corresponds.
First electrode plate 10 and second electrode plate 11 are drawn by the conducting wire 5 of marginal portion to be used to amplify with electrostatic outside edge
Device connection.
On the basis of the above structure, 10 second electrode plate of first electrode plate, 11 first vibrating diaphragm coating, 7 second vibrating diaphragm coating
8, the percent opening of the punching 4 is inconsistent, and by left-to-right, percent opening is successively reduced, in this way, first electrode plate
Capacitor is formed between 10 and second electrode plate 11, and by foring extremely strong electricity between second electrode plate 11 and the second vibrating diaphragm coating 8
Pole drives effect, forms sound wave by vibrating diaphragm base 12 and 7 forced vibration of the first vibrating diaphragm coating, and pass through 10 He of first electrode plate
The integrally formed sound transparency of vibrating diaphragm 9 is stronger to lead acoustic form, and sound is not transferred out by resistance.
It is that vibrating diaphragm 9 pushes air to form sound using the reason of above-mentioned set-up mode, pushes enough air to need stronger
Electric field action power, this requires 3 percent opening of electrode plate reduce；And the transmission of sound needs lower acoustic resistance and higher aperture
Rate, i.e., there are very big contradiction between vibration sounding and hole, the two be cannot be considered in terms of, and in the present invention, vibrating diaphragm 9 is whole
On the second vibrating diaphragm coating 8 by low percent opening second electrode plate 11 high-strength electric field effect, can drive enough air into
Row vibration sounding；And by the first vibrating diaphragm coating 7 under the reply electric field action of first electrode plate 10, vibrating diaphragm 9 is at
The progress of predetermined stroke range is of reciprocating vibration, and at the same time, the sound wave that 9 forced vibration of vibrating diaphragm generates can pass through high percent opening
First electrode plate 10, do not propagate by acoustic resistance substantially, can effectively promote the sound field scale of electrostatic electroacoustic transducers in this way
And positioning accuracy, reduce electrostatic transducer is influenced by external cavity, and electrostatic transducer is made to be more easier to drive
It is dynamic.
The outer profile of electrode plate 3, the first vibrating diaphragm coating 7 and the second vibrating diaphragm coating 8 should not have corner angle, and should use flat
Sliding camber line replaces, and is solved in the present invention by introducing buffer area 6, utilizes vibrating diaphragm base 12 and the first vibrating diaphragm coating
7 and second vibrating diaphragm coating 8 can generate the stress more concentrated in edges and corners, lead to the vibration disorder of entirety of vibrating diaphragm 9, introduce and buffer
Area 6 can effectively solve the problem that the problem of vibration disorder.
The minimum not lower than 15%-20% of the percent opening of second electrode plate 11, second electrode plate 11 are same in vibrational system
Sample has the function of adjusting cavity pressure, too low percent opening will lead to intracavitary air pressure can not quick release, influence the sound of low-frequency signal
It should be able to power.
Each tiny aperture of first electrode plate 10, the first vibrating diaphragm coating 7, the second vibrating diaphragm coating 8 and second electrode plate 11
The upright projection at center should be completely coincident, the reason is that, the Essential Action point of electrostatic field driving force is the periphery of each aperture
Profile will lead to the cutting vibrating enhancing of vibrating diaphragm 9, improve the harmonic distortion journey of energy converter so aperture central projection is not overlapped
Degree.
In addition to this, with conventional speakers difference in addition, first electrode plate 10, second electrode plate in utility model
11, the first vibrating diaphragm coating 7 and the form of the punching 4 on the second vibrating diaphragm coating 8 are not traditional circular hole, but use and be capable of Mi Pu's
Specific dimensions regular hexagon punching 4, it is, in principle, that close paving geometry of the regular hexagon as highest number of edges, is arranging
In can be close to 100% percent opening, and uniformly wide circuit structure can be provided everywhere in vibrating diaphragm 9 and the wiring of electrode plate 3,
To under the premise of electrostatic field is uniform, provide high percent opening, and then reduce acoustic resistance degree, guarantee electrostatic field uniformity and
Acoustic resistance reduces.
Certainly, the mode of the punching 4 of other geometries is similarly able to achieve above-mentioned purpose, but other close paving geometries
Sound translative performance it is relatively poor, more distortions can be brought in the case where same percent opening, the reason is that, other close paving geometric forms
Shape is made of right angle and acute angle, and sound wave can generate more apparent diffraction in acute angle and right angle, cause in transmission process
Sonic transmissions disorder.
On electrode plate 3, the first vibrating diaphragm coating 7 and the second vibrating diaphragm coating 8 in each 4 region of punching, punching 4 is preferably according to just
Triangle uniform arrangement, wherein：
As shown in Fig. 2, the preferred value range of percent opening P1 of 10 punching 4 of first electrode plate is 60%-80%, most preferably open
Porosity is 75.11%.
As shown in figure 3, the preferred value range of percent opening P2 of second electrode plate punching 4 is 10 punching 4 of first electrode plate
Percent opening 60-80%, the 75.11% of optimum opening porosity.
As shown in figure 5, the preferred value range of percent opening P3 of 8 punching 4 of the first vibrating diaphragm coating is the punching of second electrode plate 11
The 50%-75% of the percent opening in hole 4, optimum opening porosity 56.25%.
As shown in fig. 6, the preferred value range of percent opening P4 of the second vibrating diaphragm coating punching 4 is the punching of the first vibrating diaphragm coating 7
The 40%-75% of the percent opening in hole 4, optimum opening porosity 69.44%.
The advantages of basic principles and main features and utility model of utility model have been shown and described above.The industry
Technical staff it should be appreciated that utility model is not restricted to the described embodiments, what is described in the above embodiment and the description is only
The principle for illustrating utility model, under the premise of not departing from utility model spirit and scope, utility model also has various change
And improvement, these changes and improvements are both fallen within the scope of claimed utility model.Range is claimed by institute in utility model
Attached claims and its equivalent thereof.
Claims (10)
1. a kind of electrostatic electroacoustic transducers, including electrode plate (3) and vibrating diaphragm (9), it is characterised in that：The two of the vibrating diaphragm (9)
Side sets gradually as the first vibrating diaphragm coating (7), vibrating diaphragm base (12) and the second vibrating diaphragm coating (8), and the electrode plate (3) includes the
One electrode plate (10) and second electrode plate (11) are provided with first electrode plate (10), institute on the outside of the first vibrating diaphragm coating (7)
It states and is provided with second electrode plate (11) on the outside of the second vibrating diaphragm coating (8), set between the vibrating diaphragm (9) and first electrode plate (10)
It is equipped with conducting wire (5) and annular blocks line, be also equipped with conducting wire (5) and annular between the vibrating diaphragm (9) and second electrode plate (11)
Line is blocked, gap is not present between the first vibrating diaphragm coating (7), vibrating diaphragm base (12) and the second vibrating diaphragm coating (8), it is described
The outside of first electrode plate (10) and second electrode plate (11) is provided with frame (1), is provided with isolation on the inside of the frame (1)
It encloses (2), the frame (1) and cage ring (2) are ring structure.
2. a kind of electrostatic electroacoustic transducers according to claim 1, it is characterised in that：The first electrode plate (10) and
The surface of second electrode plate (11) is provided with punching (4), the punching (4) of the first electrode plate (10) and second electrode plate (11)
Region is regular hexagon, and the punching (4) is positive hexagonal structure, and is arranged electric in the first electrode plate (10) and second
Punching (4) size on pole plate (11) is not identical.
3. a kind of electrostatic electroacoustic transducers according to claim 1, it is characterised in that：The first electrode plate (10) and
Second electrode plate (11) is circular plate structure, and the first electrode plate (10) is identical with the diameter of second electrode plate (11), and
The center of circle is overlapped.
4. a kind of electrostatic electroacoustic transducers according to claim 1, it is characterised in that：The first electrode plate (10) and
Punching (4) region of second electrode plate (11) is in respectively positive six side of inscribed with first electrode plate (10) and second electrode plate (11)
Shape.
5. a kind of electrostatic electroacoustic transducers according to claim 1, it is characterised in that：The first electrode plate (10) and
Second electrode plate (11) and the not lap in punching (4) region of first electrode plate (10) and second electrode plate (11) are provided with
Buffer area (6).
6. a kind of electrostatic electroacoustic transducers according to claim 1-5, it is characterised in that：The first electrode
The percent opening in punching (4) region of plate (10) is 60%-80%, the aperture in punching (4) region of the second electrode plate (11)
Rate is 30%-50%.
7. a kind of electrostatic electroacoustic transducers according to claim 1, it is characterised in that：The first vibrating diaphragm coating (7)
It arranges with first electrode plate (10) face, the second vibrating diaphragm coating (8) and the arrangement of second electrode plate (11) face.
8. a kind of electrostatic electroacoustic transducers according to claim 1, it is characterised in that：The first vibrating diaphragm coating (7)
Punching (4) corresponding with first electrode plate (10) and second electrode plate (11) is provided with the surface of the second vibrating diaphragm coating (8).
9. a kind of electrostatic electroacoustic transducers according to claim 8, it is characterised in that：The first vibrating diaphragm coating (7)
The percent opening in punching (4) region be 20%-40%, the percent opening in punching (4) region of the second vibrating diaphragm coating (8) is
10%-30%.
10. a kind of electrostatic electroacoustic transducers according to claim 1, it is characterised in that：The electrode plate (3) is PCB
Hardened structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820588461.9U CN208143481U (en) | 2018-04-24 | 2018-04-24 | A kind of electrostatic electroacoustic transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820588461.9U CN208143481U (en) | 2018-04-24 | 2018-04-24 | A kind of electrostatic electroacoustic transducers |
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| Publication Number | Publication Date |
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| CN208143481U true CN208143481U (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820588461.9U Expired - Fee Related CN208143481U (en) | 2018-04-24 | 2018-04-24 | A kind of electrostatic electroacoustic transducers |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113596691A (en) * | 2021-07-14 | 2021-11-02 | 王丁宁 | Hollow electrostatic loudspeaker with passive radiation structure |
-
2018
- 2018-04-24 CN CN201820588461.9U patent/CN208143481U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113596691A (en) * | 2021-07-14 | 2021-11-02 | 王丁宁 | Hollow electrostatic loudspeaker with passive radiation structure |
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| CF01 | Termination of patent right due to non-payment of annual fee |