CN101729963B - Equipment and related method for continuously charging electret diaphragm - Google Patents
Equipment and related method for continuously charging electret diaphragm Download PDFInfo
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- CN101729963B CN101729963B CN 200810171030 CN200810171030A CN101729963B CN 101729963 B CN101729963 B CN 101729963B CN 200810171030 CN200810171030 CN 200810171030 CN 200810171030 A CN200810171030 A CN 200810171030A CN 101729963 B CN101729963 B CN 101729963B
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Abstract
Equipment for continuous charging comprises a discharge device and a power supply. The discharge device comprises a base plate and a conducting plate. The base plate is provided with a plurality of discharge needles which are arranged into a rectangle. First distance exists between each discharge needle and the adjacent discharge needle. Second distance exists between the conducting plate and the sharp end of each discharge needle. The power supply respectively provides first voltage to the discharge needles and second voltage to the conducting plate. The discharge device is used for charging an electret diaphragm of an electret speaker. The conducting plate is a conveyer belt made of metal and is used for conveying the electret diaphragm to the charge area of the discharge device to continuously charge the electret diaphragm.
Description
Technical field
The invention relates to the charging device and the correlation technique thereof that the electret diaphragm of capacitance type electroacoustic transducer are carried out the continous way charging, espespecially a kind of mode of utilizing corona cloth electricity (corona charge) and carrying continuously comes electret diaphragm is carried out the apparatus and method for of trickle charge.
Background technology
Because present multimedia application is day by day popularized, Portable music player or the portable apparatus with music playback function almost are seen everywhere, therefore, the quality of tone quality of horn just becomes one of important document that the user considers when choosing the Portable music player.
For condenser type loudspeaker (for example staying electric horn), the quality of its tonequality depends on whether the surface potential of electret diaphragm (electret diaphragm) is consistent.Present way is that single spray point applied high pressure, and then the electric field strength around the spray point can strengthen so that the air in the electric field begins to dissociate, and produces a large amount of electric currents that dissociates and comes electret diaphragm is conducted power distribution.Yet, when the area of electret diaphragm is larger, this kind way and can't be equably with electric charge cloth electricity to the surface of electret diaphragm, and need to expend a lot of time electret diaphragm is being conducted power distribution.In addition, airborne humiture also can have influence on the effect of cloth electricity, causes the cloth electricity of electret diaphragm inhomogeneous, and then has influence on the sound quality in electric horn.
Therefore, how to design good charging device and promote sound quality in electric horn, for producing one of important topic of staying electric horn.
Summary of the invention
Therefore, one of purpose of the present invention is to propose continous way charging device and the correlation technique thereof that a kind of electret diaphragm to capacitance type electroacoustic transducer carries out trickle charge, to solve the above problems.
The present invention discloses the continous way charging device that a kind of electret diaphragm to capacitance type electroacoustic transducer carries out the continous way charging.The continous way charging device comprises discharge fixture and power supply unit, and the discharge fixture comprises substrate and conductive plate.Be provided with many spray points on the substrate, each spray point and next-door neighbour's spray point is all at a distance of the first distance.The tip of conductive plate and each spray point is all at a distance of second distance.Power supply unit is to be electrically connected on many spray points and conductive plate, be used for providing respectively the first voltage at the most a spray point and second voltage to conductive plate.The discharge fixture is used for the electret diaphragm of staying electric horn is carried out the continous way charging, wherein conductive plate is the conveyer belt of metal material, the charging zone that is used for electret diaphragm is transported to the discharge fixture is come electret diaphragm is carried out continuous corona charging, to promote the uniformity of electret diaphragm surface cloth electricity.
The present invention also discloses a kind of method of the electret diaphragm of capacitance type electroacoustic transducer being carried out trickle charge.The method includes: the continous way charging device is provided, the continous way charging device includes discharge fixture and power supply unit, the discharge fixture comprises substrate, conductive plate, wherein be provided with many spray points on the substrate, and each spray point and next-door neighbour's spray point is all at a distance of the first distance; With conductive plate put in the tip of each spray point all at a distance of the position of second distance; Electret diaphragm is placed on the plane of conductive plate, wherein this plane is near many spray points; Provide respectively the first voltage at the most a spray point and second voltage to conductive plate, to produce accumulation in the tip of many spray points; And utilize corona cloth electricity mode to come electret diaphragm is charged.Wherein conductive plate is the conveyer belt of metal material, and the method also comprises: the conveyer belt of mobile this metal material, come electret diaphragm is carried out trickle charge with the charging zone that electret diaphragm is transported to the discharge fixture.
Description of drawings
Fig. 1 is the schematic diagram of the first embodiment of continous way charging device of the present invention.
Fig. 2 is the schematic diagram of the second embodiment of continous way charging device of the present invention.
Fig. 3 is the schematic diagram of the 3rd embodiment of continous way charging device of the present invention.
Fig. 4 is that key diagram 1,2 and 3 many spray points are arranged in the schematic diagram on the substrate.
To be the present invention carry out the flow chart of an example operation of the method for trickle charge to the electret diaphragm of capacitance type electroacoustic transducer to Fig. 5.
To be the present invention carry out the flow chart of another example operation of the method for trickle charge to the electret diaphragm of capacitance type electroacoustic transducer to Fig. 6.
[main element label declaration]
100,200,300 charging devices
110 substrates
120 spray points
125 tips
130,330 conductive plates
132 planes
140 power supply units
150 connecting lines
160,360 discharge fixtures
D1 the first distance
The d2 second distance
V1 the first voltage
The V2 second voltage
180,380 electret diaphragms
190 dotted lines
210 housings
220 airtight cavities
A1 charges regional
502～512,610～630 steps
Embodiment
Please refer to Fig. 1, Fig. 1 is the schematic diagram of the first embodiment of continous way charging device 100 of the present invention.As shown in Figure 1, charging device 100 comprises (but being not limited to) discharge fixture 160 and power supply unit 140, and discharge fixture 160 comprises substrate 110, many spray points 120, conductive plate 130.Be provided with many spray points 120 on the substrate 110, and each spray point 120 all is 90 degree with the angle of substrate, wherein each spray point 120 and next-door neighbour's spray point 120 all at a distance of first apart from d1, and many spray points 120 are to be arranged on the substrate 110 with matrix-style, and connected to each other by connecting line 150.Conductive plate 130 is to be parallel to substrate 110, and with the tip 125 of each spray point 120 all at a distance of second distance d2.Power supply unit 140 is to be electrically connected on many spray points 120 and conductive plate 130, be used for providing respectively the first voltage V1 at the most a spray point 120 and second voltage V2 to conductive plate 130.At this moment, the electret diaphragm (electret diaphragm) 180 of capacitance type electroacoustic transducer (capacitance electro-acoustic transducer) is placed on the plane 132 of conductive plate 130, its midplane 132 is near many spray points 120, when power supply unit 140 begins to supply power supply (that is the first voltage V1 and second voltage V2), assemble the current collection lotus in the tip 125 of many spray points 120 producing a large amount of electric currents that dissociates, and come electret diaphragm 180 is charged by electric (corona charge) mode of corona cloth.Dotted line 190 namely represents the path that the electric current that dissociates that the tip 125 of spray point 120 produces charges to electret diaphragm 180.
Please refer to Fig. 2, Fig. 2 is the schematic diagram of the second embodiment of continous way charging device 200 of the present invention.In Fig. 2, the framework of continous way charging device 200 is similar with continous way charging device 100 shown in Figure 1, both differences are that continous way charging device 200 also comprises housing 210, in order to the substrate 110 that provides airtight cavity 220 to hold to discharge fixture 160, many spray points 120 and conductive plate 130.Thus, the humiture that the airtight cavity 220 that can utilize housing 210 to provide controls environment under the state of constant temperature and humidity so that the electric current that dissociates that the tip 125 of each spray point 120 produces can be more equably with electric charge cloth electricity to the surface of electret diaphragm 180.
Please refer to Fig. 3, Fig. 3 is the schematic diagram of the 3rd embodiment of continous way charging device 300 of the present invention.In Fig. 3, the framework of charging device 300 is similar with charging device shown in Figure 2 200, and both differences are that the conductive plate 330 of charging device 300 is that conveyer belt by metal material is consisted of.The user can sequentially place multi-disc electret diaphragm 380 on the conveyer belt (that is conductive plate 330) of metal material, by moving of conveyer belt the charging zone A1 that multi-disc electret diaphragm 380 is transported to discharge fixture 360 is come multi-disc electret diaphragm 380 is carried out the continous way charging.This kind way is particularly useful for making in a large number on the processing procedure of electret diaphragm 380, not only can effectively promote in the tonequality of electric horn and the stability in the assembling, can also shorten the time of cloth electricity, and with the competitiveness of processing procedure automation with improving product, really serve multiple.
In above-described embodiment, continous way charging device 100,200,300 can be used to the electret diaphragm of capacitance type electroacoustic transducer (for example staying electric horn) is charged, but application of the present invention is not limited to this.In addition, the disclosed continous way charging device 300 of Fig. 3 is a preferred embodiment of the present invention in fact.
Note that the first above-mentioned voltage difference delta V apart from d1, second distance d2 and the first voltage V1 and second voltage V2 all can have influence on charging device 100,200,300 cloth electricity effect.Wherein, first apart from slightly 2～4 centimeters of d1 pacts, approximately slightly 2～10 centimeters of second distance d2, and the voltage difference delta V of the first voltage V1 and second voltage V2 makes an appointment with slightly 10000 volts to 20000 volts.For example, when first being that to be set as 2 centimeters, second distance d2 be the voltage difference delta V that is set as 5 centimeters and the first voltage V1 and second voltage V2 when being set as 17000 volts apart from d1, then charging device 100,200,300 can come electret diaphragm 180,380 is charged with the electric currents of 0.03～0.3 milliampere (mA); When first being that to be set as 2 centimeters, second distance d2 be the voltage difference delta V that is set as 3 centimeters and the first voltage V1 and second voltage V2 when being set as 10000 volts apart from d1, then charging device 100,200,300 can come electret diaphragm 180,380 is charged with 0.05～0.5 milliampere electric currents.In other words, can adjust continous way charging device 100,200,300 cloth electricity effect and cloth electricity time by changing these parameters (d1, d2, Δ V).
Notice again that please the first voltage V1 can be greater than or less than second voltage V2.As the first voltage V1 during greater than second voltage V2, the electret diaphragm 180 after the charging, 380 can be with positive charge; As the first voltage V1 during less than second voltage V2, the electret diaphragm 180 after the charging, 380 can be with negative electrical charge.Moreover, electret diaphragm 180,380 can comprise at least one plastic layer and an electrode layer, wherein this plastic layer can be made of polytetrafluoroethylene (PTFE) or fluorinated ethylene propylene (FEP) (FEP), and right those skilled in the art should understand, and this is not restrictive condition of the present invention.
Please refer to Fig. 4, Fig. 4 is that key diagram 1,2 and 3 many spray points 120 are arranged in the schematic diagram on the substrate 110.As shown in Figure 4, many spray points 120 are to be arranged on the substrate 110 with matrix-style, and each spray point 120 and next-door neighbour's spray point 120 all at a distance of first apart from d1.When each spray point 120 all applies identical voltage (that is first voltage V1), size, the direction (for example radiating angle) that can control the electric current that dissociates that the tip 125 of each spray point 120 produces are identical haply, thus, can be equably with electric charge cloth electricity to electret diaphragm 180,380 surface, and then improve the sound quality of staying electric horn.In addition, no matter electret diaphragm 180,380 area are much, the disclosed charging device 100 of the present invention, 200,300 all applicable.
Please refer to Fig. 5, the flow chart of one example operation of Fig. 5 method that to be the present invention charge to the electret diaphragm of capacitance type electroacoustic transducer, it comprises following step and (please notes, if can obtain roughly the same result, then the following step and non-limiting will the execution according to order shown in Figure 5):
Step 502: beginning.
Step 504: the continous way charging device is provided, it includes discharge fixture and power supply unit, the discharge fixture comprises substrate, conductive plate, wherein be provided with many spray points that are arranged in matrix on the substrate, and each spray point and next-door neighbour's spray point is all at a distance of the first distance.
Step 506: with conductive plate put in the tip of each spray point all at a distance of the position of second distance.
Step 508: electret diaphragm is placed on the plane of conductive plate, wherein this plane is near many spray points.
Step 510: the first voltage is provided respectively, and a spray point and second voltage produce a large amount of electric currents that dissociates to conductive plate to assemble electric charge in the tip of many spray points at the most.
Step 512: utilize corona cloth electricity mode to come electret diaphragm is carried out trickle charge.
About each element that each step shown in Figure 5 please be arranged in pairs or groups shown in Figure 1, can understand between each element and how to operate, and for description for purpose of brevity, so the operation of each step just repeats no more among Fig. 5.It should be noted that, the step of above-mentioned flow process only is used for illustrating feasible embodiment for the present invention, and unrestricted restrictive condition of the present invention, and in the situation of spirit of the present invention, the method can also comprise other intermediate steps or several steps can be merged into one step, to do suitable variation.
In addition, please refer to Fig. 6, the flow chart of another example operation of Fig. 6 method that to be the present invention charge to the electret diaphragm of capacitance type electroacoustic transducer, it comprises following step:
Step 502: beginning.
Step 504: the continous way charging device is provided, and it includes discharge fixture and power supply unit, and the discharge fixture comprises substrate, conductive plate, wherein be provided with many spray points on the substrate, and each spray point and next-door neighbour's spray point is all at a distance of the first distance.
Step 506: with conductive plate put in the tip of each spray point all at a distance of the position of second distance.
Step 610: substrate, many spray points and conductive plate are arranged among the airtight cavity that housing provides.
Step 620: the humiture of utilizing airtight cavity to control environment.
Step 508: electret diaphragm is placed on the plane of conductive plate, wherein this plane is near many spray points.
Step 630: mobile conductive plate (conveyer belt of metal material) is to be transported to electret diaphragm in the charging zone of this discharge fixture.
Step 510: the first voltage is provided respectively, and a spray point and second voltage produce a large amount of electric currents that dissociates to conductive plate to assemble electric charge in the tip of many spray points at the most.
Step 512: utilize corona cloth electricity mode to come electret diaphragm is carried out trickle charge.
Please note, the step of Fig. 6 and the step of Fig. 5 are similar, it is the alternate embodiment of Fig. 5, and both differences are that the step of Fig. 6 has increased the function of control humiture (that is step 610,620) and mobile conductive plate (for example conveyer belt of metal material) (that is step 630) in addition.About each step shown in Figure 6 please arrange in pairs or groups Fig. 2 and each element shown in Figure 3, can understand between each element and how to operate, for repeating no more in this for purpose of brevity.
Certainly, above-mentioned mentioned charging device 100,200,300 only is one embodiment of the invention, and those skilled in the art are when doing according to this suitable variation.In addition, each above-mentioned parameter (d1, d2, V1, V2) and revocable, visual actual demand and adjust it.
Above-described embodiment only is used for technical characterictic of the present invention is described, is not to limit to category of the present invention.As from the foregoing, the invention provides continous way charging device and method thereof that a kind of electret diaphragm to capacitance type electroacoustic transducer carries out trickle charge, by many spray points 120 are arranged on the substrate 110 with matrix-style, and each spray point and next-door neighbour's spray point is all at a distance of identical distance (that is first apart from d1), thus, can control the size of the electric current that dissociates that the tip of each spray point produces, direction (for example radiating angle) is identical haply, with equably with electric charge cloth electricity to the surface of electret diaphragm, and then improve to stay the sound quality of electric horn.Moreover the humiture that the airtight cavity 220 that can utilize housing 210 to provide controls environment is so that the electric current that dissociates that the tip of each spray point produces can be more even.In addition, can adopt the conveying of metal material to bring the formation conductive plate, and by moving of conveyer belt that the charging that electret diaphragm is transported to this discharge fixture is regional, so that the multi-disc electret diaphragm is carried out trickle charge.The disclosed charging device of the present invention and method, not only can effectively promote in the tonequality of electric horn and the stability in the assembling, can also shorten the time of cloth electricity and the processing procedure automation is come the competitiveness of improving product, be particularly useful for making in a large number on the processing procedure of electret diaphragm.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim scope of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (14)
1. a continous way charging device includes discharge fixture and power supply unit, wherein:
This discharge fixture includes:
Substrate is provided with many spray points, and each spray point and next-door neighbour's spray point is all at a distance of the first distance; And
Conductive plate, the tip of itself and each spray point is all at a distance of second distance; And
This power supply unit is electrically connected on these many spray points and this conductive plate, be used for providing respectively the first voltage to these many spray points and second voltage to this conductive plate.
2. continous way charging device according to claim 1, wherein these many spray points are to be arranged on this substrate with matrix-style.
3. continous way charging device according to claim 1, wherein this conductive plate is the conveyer belt of metal material.
4. continous way charging device according to claim 1, wherein this first distance is 2～4 centimeters; This second distance is 2～10 centimeters; And the voltage difference of this first voltage and this second voltage is 10000 volts to 20000 volts.
5. continous way charging device according to claim 1, wherein the angle of these many spray points and this substrate all is 90 degree.
6. continous way charging device according to claim 1, it also comprises:
Housing is in order to this substrate, these many spray points and this conductive plate that provides airtight cavity to hold this discharge fixture.
7. continous way charging device according to claim 1, it is to be applied to capacitance type electroacoustic transducer.
8. continous way charging device according to claim 7, wherein this capacitance type electroacoustic transducer is for staying electric horn, and this discharge fixture utilizes corona cloth electricity mode to come that this electret diaphragm in electric horn is carried out continous way to charge.
9. method that the electret diaphragm of capacitance type electroacoustic transducer is carried out trickle charge includes:
The continous way charging device is provided, this continous way charging device includes discharge fixture and power supply unit, this discharge fixture comprises substrate and conductive plate, wherein is provided with many spray points on this substrate, and each spray point and next-door neighbour's spray point is all at a distance of the first distance;
With this conductive plate put in the tip of each spray point all at a distance of the position of second distance;
This electret diaphragm is placed on the plane of this conductive plate, wherein this plane is near these many spray points;
Provide respectively the first voltage to this many spray points and second voltage to this conductive plate, produce a large amount of electric currents that dissociates in the tip of these many spray points with the gathering electric charge; And
Utilize corona cloth electricity mode to come this electret diaphragm is carried out trickle charge.
10. method according to claim 9, wherein these many spray points are to be arranged on this substrate with matrix-style.
11. method according to claim 9, wherein this conductive plate is the conveyer belt of metal material, and the method also comprises:
The conveyer belt of mobile this metal material carries out trickle charge with the charging zone that this electret diaphragm is transported to this discharge fixture to this electret diaphragm.
12. method according to claim 9, wherein this first distance is 2～4 centimeters; This second distance is 2～10 centimeters; And the voltage difference of this first voltage and this second voltage is 10000 volts to 20000 volts.
13. method according to claim 9, wherein the angle of these many spray points and this substrate all is 90 degree.
14. method according to claim 9, it also comprises:
This substrate, these many spray points and this conductive plate of this discharge fixture is arranged among the airtight cavity that housing provides; And
The humiture of utilizing this airtight cavity to control environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810171030 CN101729963B (en) | 2008-10-31 | 2008-10-31 | Equipment and related method for continuously charging electret diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810171030 CN101729963B (en) | 2008-10-31 | 2008-10-31 | Equipment and related method for continuously charging electret diaphragm |
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| Publication Number | Publication Date |
|---|---|
| CN101729963A CN101729963A (en) | 2010-06-09 |
| CN101729963B true CN101729963B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810171030 Expired - Fee Related CN101729963B (en) | 2008-10-31 | 2008-10-31 | Equipment and related method for continuously charging electret diaphragm |
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| CN102703421A (en) * | 2012-06-18 | 2012-10-03 | 那日 | Method for mutating flavomycin producing bacteria by using high-voltage corona electric field and high-voltage corona electric field device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0274894A1 (en) * | 1986-12-22 | 1988-07-20 | Xerox Corporation | Corona charging device |
| CN2422765Y (en) * | 2000-06-02 | 2001-03-07 | 同济大学 | Corona charger |
| CN1289219A (en) * | 1999-09-20 | 2001-03-28 | 元一通信株式会社 | Method and apparatus for charging diaphragm of capacitance microphone |
-
2008
- 2008-10-31 CN CN 200810171030 patent/CN101729963B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0274894A1 (en) * | 1986-12-22 | 1988-07-20 | Xerox Corporation | Corona charging device |
| CN1289219A (en) * | 1999-09-20 | 2001-03-28 | 元一通信株式会社 | Method and apparatus for charging diaphragm of capacitance microphone |
| CN2422765Y (en) * | 2000-06-02 | 2001-03-07 | 同济大学 | Corona charger |
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| CN101729963A (en) | 2010-06-09 |
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Granted publication date: 20130320 Termination date: 20191031 |