CN201479360U - Plane vibration diaphragm sound production device - Google Patents
Plane vibration diaphragm sound production device Download PDFInfo
- Publication number
- CN201479360U CN201479360U CN2009201944113U CN200920194411U CN201479360U CN 201479360 U CN201479360 U CN 201479360U CN 2009201944113 U CN2009201944113 U CN 2009201944113U CN 200920194411 U CN200920194411 U CN 200920194411U CN 201479360 U CN201479360 U CN 201479360U
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- diaphragm
- current circuit
- return circuit
- current return
- current
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to an earphone, in particular to a plane vibration diaphragm sound production device which comprises a magnetic body; a diaphragm bracket is arranged above the magnetic body and is internally fixed with a diaphragm; a current return circuit is laid along the surface of the diaphragm; after being electrified, the current return circuit generates magnetic field having interaction with the magnetic body, and the diaphragm is driven to vibrate; and the current return circuit is provided with a current limiting resistance. The plane vibration diaphragm earphone can generate the magnetic field by the current return circuit arranged on the diaphragm, and the magnetic field has interaction with the magnetic body to drive the diaphragm to vibrate; as the diaphragm and the current return circuit form a whole body, and the current return circuit is laid along the surface of the diaphragm, the whole diaphragm surface is evenly stressed when in vibration; and in addition, the current return circuit is stressed to drive the diaphragm to vibrate, no kinetic energy is consumed in the motion process, the energy efficiency ratio is high, and the sensitivity is better.
Description
Technical field
The present invention relates to a kind of earphone, especially a kind of plane diaphragm audible device.
Background technology
Audible devices such as existing earphone and sound equipment normally have the coil of magnetite and energising to interact and wired astragal dynamic diaphragm shakes sounding, when diaphragm vibrates, be moving earlier by the contact site of spring and diaphragm, drive the vibrations of whole diaphragm then, so its unbalanced stress is even, thereby can impact the quality of sounding, and because the vibrations of spring itself will consume the kinetic energy of part, so it is not high by the Energy Efficiency Ratio that electric energy is converted into kinetic energy, power and sensitivity.
Summary of the invention
The objective of the invention is to address the aforementioned drawbacks, and the plane diaphragm that a kind of diaphragm applied force is even, Energy Efficiency Ratio is high earphone is provided.
To achieve these goals, the present invention adopts following technical scheme:
It comprises a magnet, described magnet top is provided with a diaphragm support, described diaphragm support internal fixation one diaphragm, its improvement is: described membrane surface is provided with the current circuit of laying along membrane surface, this current circuit energising back produces and the interactional magnetic field of magnet, the vibrations of drive diaphragm are provided with a current-limiting resistance in the current circuit.
Preferably, the current circuit of described membrane surface passes from the diaphragm center, also forms with current circuit the magnetic direction unanimity that current circuit produced on the described two sides on the surface of diaphragm another side.
Preferably, described current circuit adopts silver slurry sputter on diaphragm.
Plane diaphragm earphone of the present invention produces magnetic field and magnet and acts on mutually and drive diaphragm and shake by being located at current circuit on the diaphragm, because diaphragm and current circuit one, and circuit loop is laid along membrane surface, so it is when vibrations, membrane surface integral body is stressed, stressed even, the stressed diaphragm that promptly drives of current circuit shakes in addition, do not have kinetic energy consumption in motion process, so the Energy Efficiency Ratio height, sensitivity is strong.
Description of drawings
Fig. 1 is the overall structure of first embodiment of the invention embodiment;
Fig. 2 is the membrane surface current circuit schematic diagram of first embodiment of the invention;
Fig. 3 is the diaphragm front surface current circuit schematic diagram of second embodiment of the invention;
Fig. 4 is the anti-surface current of the diaphragm of a second embodiment of the invention loop schematic diagram.
The object of the invention, function and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
As shown in Figure 1, the first embodiment of the present invention comprises a magnet 1, described magnet 1 top is provided with a diaphragm support 2, described diaphragm support 2 internal fixation one diaphragm 3, as shown in Figure 2, described diaphragm 3 surfaces are provided with the current circuit of laying along membrane surface 31, these current circuit 31 energising backs produce and magnet 1 interactional magnetic field, drive diaphragm 2 vibrations,, be provided with a current-limiting resistance 32 in the current circuit 31 in order to prevent the excessive current circuit that burns of electric current.Present embodiment is provided with current circuit in the one side of diaphragm, and current circuit can directly be drawn with lead after arriving the diaphragm middle part, draws with lead after perhaps passing diaphragm again.
For the sensitivity that makes diaphragm vibrations better, the second embodiment of the present invention is on the basis of first embodiment, the current circuit 31 of described diaphragm front surface passes through to the reverse side of diaphragm 3 from diaphragm 3 centers, surface at the reverse side of diaphragm 3 also forms a current circuit 33, the magnetic direction unanimity that current circuit produced on the described tow sides, thus electric current by the time, the magnetic field that double-edged current circuit produces is bigger, also stronger with the active force of magnet, thus the sensitivity of earphone promoted.
Though the accompanying drawing of two embodiment of the present invention all is to illustrate as an example with circular film, but diaphragm of the present invention is not restricted to circle, also can be square, triangle, polygon even some irregular shapes, concrete shape can design according to the moulding of earphone or audio amplifier, thereby makes the design of product more flexible, unrestricted.
Above-mentioned is that described current circuit in the example adopts silver slurry sputter on diaphragm, and its technology is identical with the circuit manufacturing process of flexible PCB, herein no longer expansion explanation.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (3)
1. plane diaphragm audible device, it comprises a magnet, described magnet top is provided with a diaphragm support, described diaphragm support internal fixation one diaphragm, it is characterized in that: described membrane surface is provided with the current circuit of laying along membrane surface, this current circuit energising back produces and the interactional magnetic field of magnet, drives the diaphragm vibrations, is provided with a current-limiting resistance in the current circuit.
2. plane diaphragm audible device as claimed in claim 1, it is characterized in that: the current circuit of described membrane surface passes from the diaphragm center, also form with current circuit the magnetic direction unanimity that current circuit produced on the described two sides on the surface of diaphragm another side.
3. plane diaphragm audible device as claimed in claim 1 or 2 is characterized in that: described current circuit adopts silver slurry sputter on diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201944113U CN201479360U (en) | 2009-09-09 | 2009-09-09 | Plane vibration diaphragm sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201944113U CN201479360U (en) | 2009-09-09 | 2009-09-09 | Plane vibration diaphragm sound production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201479360U true CN201479360U (en) | 2010-05-19 |
Family
ID=42415615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201944113U Expired - Fee Related CN201479360U (en) | 2009-09-09 | 2009-09-09 | Plane vibration diaphragm sound production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201479360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102547513A (en) * | 2012-01-06 | 2012-07-04 | 姜福文 | Voice coil voice film earphone |
-
2009
- 2009-09-09 CN CN2009201944113U patent/CN201479360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102547513A (en) * | 2012-01-06 | 2012-07-04 | 姜福文 | Voice coil voice film earphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20120909 |