CN1700810A - Double-magnet electroacoustical transducer - Google Patents
Double-magnet electroacoustical transducer Download PDFInfo
- Publication number
- CN1700810A CN1700810A CN 200410018592 CN200410018592A CN1700810A CN 1700810 A CN1700810 A CN 1700810A CN 200410018592 CN200410018592 CN 200410018592 CN 200410018592 A CN200410018592 A CN 200410018592A CN 1700810 A CN1700810 A CN 1700810A
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- CN
- China
- Prior art keywords
- magnet
- magnetic
- magnetic cover
- cover
- pole piece
- 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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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
This invention relates to one double magnet electricity and sound converter, which comprises double magnets, magnet cover, rack and electrode chip, wherein, the double magnets are in round shape and are struck to same one cover with same magnetism and axis line; the joints enhances magnetic motive force to satisfy mobile phone to overcome technique problems and sets one same cover structure.
Description
Affiliated technical field
The present invention belongs to the pickoff group in International Classification of Patents, i.e. H04R, particularly pair magnet receivers or two magnet loudspeaker.
Background technology
Existing pair of magnet receiver or two magnet loudspeaker, its structure are that columniform inner magnet coaxial line reversed polarity places on the contour annular outer magnet, and its crown side face of the magnetic cover of no end face cap shape places between two magnets, external magnetic circuit in forming respectively.This pair of magnet electroacoustic transducer can be made of one and opposing receiver and loud speaker, saved installing space, reduced cost.But it is bonding that it needs, and magnetic flux density can not satisfy the required high sound pressure of current many chords of mobile phone ring in the magnetic gap of toroidal magnet simultaneously; Toroidal magnet places outside the magnetic cover, and the leakage field of magnetic loop also can influence electronic equipment on every side.
Summary of the invention
The object of the present invention is to provide a kind of pair of magnet electroacoustic transducer, solve the requirement of mobile phone the high sound pressure loud speaker.
It is as follows to disclose new scheme:
A kind of pair of magnet electroacoustic transducer contains magnet, pole piece sheet, magnetic cover and support at least, it is characterized in that being inversion " protruding " font and up and down on the shoulder of the magnetic cover of both ends open, coaxial line is equipped with the magnet first; The following coaxial line of magnet first posts polarity magnet second in the same way; Below the top and magnet second of magnet first, post separately pole piece sheet first and pole piece sheet second respectively with one heart; Magnet first, magnet second leaves magnetic gap with the inner peripheral surface of magnetic cover respectively, promptly forms magnetic circuit separately; Said magnetic cover coaxial line is fixed on the support.
The sample of making according to such scheme, its pair magnet is cylinder and same polarity, has avoided prior art toroidal magnet rate of finished products low, and the disadvantage of incorrect polarity easily takes place, the bigger magnetomotive force that improved of same polarity structure has simultaneously guaranteed that electrical equipment such as mobile phone is to high sound pressure and high sensitivity requirement.Described pair of magnet all shielded by the magnetic cover, therefore overcome the technical barrier of prior art leakage field.
Description of drawings
Figure is the schematic diagram (omissions such as voice coil loudspeaker voice coil, vibrating diaphragm) of one embodiment of the invention.Wherein: 1, pole piece sheet first; 2, magnet first; 3, magnetic cover; 4, support; 5, lug plate; 6, magnet second; 7, pole piece sheet second.
Embodiment
A kind of pair of magnet electroacoustic transducer contains magnet 2,6. pole piece sheet 1,7, magnetic cover 3 and support 4 at least, is inversion " protruding " font and up and down on the shoulder of the magnetic cover 3 of both ends open, coaxial line is equipped with magnet first 2; The following coaxial line of magnet first 2 posts polarity magnet second 6 in the same way; Below the top and magnet second 6 of magnet first 2, post separately pole piece sheet first 1 and pole piece sheet second 7 respectively with one heart; Magnet first 2, magnet second 6 leave magnetic gap with the inner peripheral surface of magnetic cover 3 respectively, promptly form magnetic circuit separately; Said magnetic cover 3 coaxial lines are fixed on the support 4.Usually magnet second (6) matches with voice coil loudspeaker voice coil, the vibrating diaphragm of receiver, and the magnet first 2 that diameter is big slightly and voice coil loudspeaker voice coil, the vibrating diaphragm of loud speaker match.
Magnet first 2 and magnet second 6 all adopt NdFeB material.Magnetic cover 3 usefulness embedding inlay techniques are fixed in the draw-in groove of support 4.Lug plate 5 covers are stuck on support 4 projection on one side.In the such scheme, two magnets are in the same magnetic cover, are full internal magnetization structure, and the structure that is exposed to magnetic cover place with toroidal magnet in the prior art is different fully.
Claims (1)
- A kind of pair of magnet electroacoustic transducer contains magnet (2,6), pole piece sheet (1,7), magnetic cover (3) and support (4) at least, it is characterized in that being inversion " protruding " font and up and down on the shoulder of the magnetic cover (3) of both ends open, coaxial line is equipped with magnet first (2); The following coaxial line of magnet first (2) posts polarity magnet second (6) in the same way; Below the top and magnet second (6) of magnet first (2), post separately pole piece sheet first (1) and pole piece sheet second (7) respectively with one heart; Magnet first (2), magnet second (6) leave magnetic gap with the inner peripheral surface of magnetic cover (3) respectively, promptly form magnetic circuit separately; Said magnetic cover (3) coaxial line is fixed on the support (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018592 CN1700810A (en) | 2004-05-18 | 2004-05-18 | Double-magnet electroacoustical transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018592 CN1700810A (en) | 2004-05-18 | 2004-05-18 | Double-magnet electroacoustical transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1700810A true CN1700810A (en) | 2005-11-23 |
Family
ID=35476632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410018592 Pending CN1700810A (en) | 2004-05-18 | 2004-05-18 | Double-magnet electroacoustical transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1700810A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977342A (en) * | 2010-07-09 | 2011-02-16 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN104320748B (en) * | 2008-12-10 | 2017-10-24 | Med-El电气医疗器械有限公司 | Skull vibrational unit |
-
2004
- 2004-05-18 CN CN 200410018592 patent/CN1700810A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320748B (en) * | 2008-12-10 | 2017-10-24 | Med-El电气医疗器械有限公司 | Skull vibrational unit |
| CN101977342A (en) * | 2010-07-09 | 2011-02-16 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN101977342B (en) * | 2010-07-09 | 2013-09-18 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |