CN201594910U - Coaxial loudspeaker magnetic circuit and coaxial loudspeaker comprising the magnetic circuit - Google Patents
Coaxial loudspeaker magnetic circuit and coaxial loudspeaker comprising the magnetic circuit Download PDFInfo
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- CN201594910U CN201594910U CN2009202463981U CN200920246398U CN201594910U CN 201594910 U CN201594910 U CN 201594910U CN 2009202463981 U CN2009202463981 U CN 2009202463981U CN 200920246398 U CN200920246398 U CN 200920246398U CN 201594910 U CN201594910 U CN 201594910U
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- voice coil
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- iron
- air gap
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Abstract
The utility model relates to a coaxial loudspeaker magnetic circuit and a coaxial loudspeaker comprising the magnetic circuit. By a magnetic circuit structure using double magnetic circuit gap, the power of the coaxial loudspeaker is loaded on two sound rings, so the power bearing ability of the coaxial loudspeaker is obviously improved. Correspondingly, the diameter of a single sound ring is small, and the quality is light, so the flexibility of the coaxial loudspeaker is improved. Because the two sound rings are respectively connected with a low-sound paper cone and a globe-roof sound film of the coaxial loudspeaker, the rigid of the total paper cone is strengthened.
Description
Technical field
The loud speaker that the utility model relates to a kind of coaxial loudspeaker magnetic circuit and comprises this magnetic circuit.
Background technology
In daily use, the microphone device great majority all belong to the electrodynamic type moving-coil speaker, promptly by permanent magnet (ferrite or neodymium iron boron) and permeability magnetic material (soft iron etc.), form the magnetic circuit that working gas gap is arranged, and voice coil loudspeaker voice coil is positioned at magnetic air gap.According to Faraday's law, when current when the magnetic field, can be subjected to an electric power, its direction meets not comes bright left hand rule, power and electric current, magnetic direction are orthogonal, stressed size is directly proportional with electric current, conductor length, magnetic flux density.Therefore, when passing through the alternation tone currents in the voice coil loudspeaker voice coil, voice coil loudspeaker voice coil is subjected to the effect of alternation motive force to carry out alternate motion, drives the cone vibration, promotes air repeatedly and sounding.
Fig. 1 is the profile of existing external magnetic type loud speaker, wherein shows a kind of magnetic structure.
As shown in Figure 1, magnetic circuit of loudspeaker is made up of train wheel bridge 1, T iron 4 and toroidal coils 3.A toroid air gap is formed between the pole piece post of train wheel bridge 1, magnet 3 and T iron 4, and voice coil loudspeaker voice coil 6 is suspended in this toroid air gap and with vibrating diaphragm and is connected.Voice coil loudspeaker voice coil by the alternation tone currents moves owing in the magnetic field that acts on the toroid air gap in magnetic field, and the vibrating diaphragm that links to each other with voice coil loudspeaker voice coil is vibration thereupon also, by air dielectric sound wave is sent out again.
At present, the magnetic circuit of traditional outer-magnet speaker has only a voice coil loudspeaker voice coil, and a cone can only be made single loud speaker, or bass unit or voice unit.The music playback frequency band of single loud speaker all has certain width, usually can't satisfy the so wide scope of people's ear 20～20kHz fully, therefore, the Hi-Fi audio amplifier mostly adopts reset respectively separately frequency range of high and low sound loud speaker, synthetic then whole music, the structure that also adopts high, medium and low three loud speakers that has, purpose are exactly in order to satisfy the needs of music playback.
Coaxial loudspeaker is two loud speakers to be installed be responsible for playback high pitch and middle bass respectively on same axle center, and these two loud speakers also will overlap on the vibrating diaphragm face, because its physical positioning approaches point sound source, the sound field location of the music of therefore resetting is just very desirable.
The coaxial loudspeaker product is the speaker product that replaces existing regular senior secondary school, a plurality of speaker systems of bass with a coaxial loudspeaker, its performance parameter is better than ventional loudspeakers, outstanding feature is the propagation phase fidelity height of high, medium and low sound gamut sound, the acoustic image accurate positioning, the music resolution is good, acoustics and Hi-Fi that such loud speaker is particularly suitable for AC-3 standard-family cinema system in the playback of DVD reset, and are more suitable for the use (as car audio system) under the small space environment.
For the magnetic structure of traditional coaxial loudspeaker,,, its power bearing ability is limited to so its whole input powers all are carried on this voice coil loudspeaker voice coil because one magnetic air gap can only hold a voice coil loudspeaker voice coil; Correspondingly, if improve power bearing ability, then need to improve the voice coil loudspeaker voice coil radius, this is a cost to sacrifice sensitivity; In addition, because the actuating force that voice coil loudspeaker voice coil motion produces acts on the root of cone, thus rigidity deficiency when making the cone motion, extreme prematurity is estranged easily cuts vibration.
Therefore, need a kind of coaxial loudspeaker magnetic circuit that can address the above problem and comprise that this eats the coaxial loudspeaker of halogen.
The utility model content
The coaxial loudspeaker that the utility model provides a kind of coaxial loudspeaker magnetic circuit that can overcome the above problems and comprised this magnetic circuit.
In first aspect, the utility model provides a kind of coaxial loudspeaker magnetic circuit, it is characterized in that comprising train wheel bridge, first magnet, second magnet, magnetic conductance plate, T iron, wherein, between described train wheel bridge, described first magnet and described T iron, form first magnetic air gap, between described T iron, described magnetic conductance plate and described second magnet, form second magnetic air gap.
In second aspect, the utility model provides a kind of coaxial loudspeaker, it is characterized in that comprising first voice coil loudspeaker voice coil, second voice coil loudspeaker voice coil, the bass cone, the high frequency audio film, train wheel bridge, first magnet, second magnet, the magnetic conductance plate, T iron, wherein, wherein, at described train wheel bridge, form first magnetic air gap between described first magnet and the described T iron, at described T iron, form second magnetic air gap between described magnetic conductance plate and described second magnet, described first voice coil loudspeaker voice coil is suspended in described first magnetic air gap and with described bass cone and is connected, when energising, drive described bass cone as bass unit, described second voice coil loudspeaker voice coil is suspended in described second magnetic air gap and with described ball top sound film and is connected, and drives described ball top sound film as voice unit when energising.
The utility model has been by having adopted the magnetic structure of double magnetic circuit air gap, and the power of coaxial loudspeaker is carried on two voice coil loudspeaker voice coils, significantly improved the power bearing ability of coaxial loudspeaker; Correspondingly, the diameter of single voice coil loudspeaker voice coil is less, lighter weight, the sensitivity that has improved coaxial loudspeaker; Because two voice coil loudspeaker voice coils are connected with ball top sound film with the bass cone of coaxial loudspeaker respectively, have strengthened the cone whole rigidity.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present utility model is described in detail, in the accompanying drawings:
Fig. 1 is the profile of existing external magnetic type loud speaker.
Fig. 2 is the profile according to coaxial loudspeaker of the present utility model.
Embodiment
Fig. 2 is the profile according to coaxial loudspeaker of the present utility model.
As shown in Figure 2, comprise bass cone 7, high frequency audio film 8, bass voice coil loudspeaker voice coil 5, voice coil loudspeaker voice coil 2, train wheel bridge 1, magnet 3, magnetic conductive board 9, neodymium iron boron magnetic body 10 and T iron 4 according to coaxial loudspeaker of the present utility model, wherein, external magnetic circuit is made up of train wheel bridge 1, magnet 3 and T iron 4, as the bass unit drive part of whole coaxial loudspeaker; Internal magnetic circuit is made up of magnetic conductive board 9, neodymium iron boron magnetic body 10 and T iron 4, as the voice unit drive part of whole coaxial loudspeaker.
A toroid air gap is formed between train wheel bridge 1, magnet 3 and the T iron 4, and bass voice coil loudspeaker voice coil 5 is suspended in this toroid air gap and with bass cone 7 and is connected; Another toroid air gap is formed between magnetic conductor bowl (also being formed by T iron 4), magnetic conductive board 9 and the neodymium iron boron magnetic body 10, and voice coil loudspeaker voice coil 2 is suspended in this toroid air gap.Should be pointed out that T iron both as the magnetic pole core of external magnetic circuit, again as the U iron of internal magnetic circuit, i.e. magnetic conductor bowl.
After bass voice coil loudspeaker voice coil 5 fed the alternation tone currents, voice coil loudspeaker voice coil produced alternating magnetic field under the effect of alternation tone currents, and its size and Orientation constantly changes with the variation of tone currents.Simultaneously, magnet also produces a size and the constant stationary magnetic field of direction.Under the interaction in such two magnetic fields, voice coil loudspeaker voice coil carries out alternate motion with the direction perpendicular to the electric current in the voice coil loudspeaker voice coil and the magnet magnetic line of force in the toroid air gap.Because bass cone 7 is connected with bass voice coil loudspeaker voice coil 5, thereby vibrates, drive the bass unit of whole coaxial loudspeaker under the drive of bass voice coil loudspeaker voice coil 5.
In like manner, after voice coil loudspeaker voice coil 2 fed the alternation tone currents, voice coil loudspeaker voice coil produced alternating magnetic field under the effect of alternation tone currents, and its size and Orientation constantly changes with the variation of tone currents.Simultaneously, neodymium iron boron magnetic body also produces a size and the constant stationary magnetic field of direction.Under the interaction in such two magnetic fields, voice coil loudspeaker voice coil 2 carries out alternate motion with the direction perpendicular to the electric current in the voice coil loudspeaker voice coil and the neodymium iron boron magnetic body magnetic line of force in the toroid air gap.Because the high frequency audio film is connected with voice coil loudspeaker voice coil 2, thereby vibrates, drive the voice unit of whole coaxial loudspeaker under the drive of voice coil loudspeaker voice coil 2.
Coaxial loudspeaker of the present utility model has designed an internal magnetic circuit in the external magnetic circuit of common outer-magnet speaker.Become compound magnetic circuit with two magnetic circuits.The utility model adopts the double slit gap structure, can use two voice coil loudspeaker voice coils simultaneously, and wherein a voice coil loudspeaker voice coil drives the bass cone as bass unit, and another voice coil loudspeaker voice coil drive ball top sound film is as voice unit.
The utility model has been by having adopted the magnetic structure of double magnetic circuit air gap, and the power of coaxial loudspeaker is carried on two voice coil loudspeaker voice coils, significantly improved the power bearing ability of coaxial loudspeaker; Correspondingly, the diameter of single voice coil loudspeaker voice coil is less, lighter weight, the sensitivity that has improved coaxial loudspeaker; Because two voice coil loudspeaker voice coils are connected with ball top sound film with the bass cone of coaxial loudspeaker respectively, have strengthened the cone whole rigidity.
Obviously, under the prerequisite that does not depart from true spirit of the present utility model and scope, the utility model described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The utility model scope required for protection is only limited by described claims.
Claims (8)
1. coaxial loudspeaker magnetic circuit, it is characterized in that comprising train wheel bridge, first magnet, second magnet, magnetic conductance plate, T iron, wherein, between described train wheel bridge, described first magnet and described T iron, form first magnetic air gap, between described T iron, described magnetic conductance plate and described second magnet, form second magnetic air gap.
2. magnetic circuit according to claim 1, the pole piece column top that it is characterized in that described T iron has a circular groove, described circular groove forms a magnetic conductance bowl, and described second magnetic air gap forms between described magnetic conductance bowl, described magnetic conductance plate and described neodymium iron boron magnetic body.
3. magnetic circuit according to claim 1 is characterized in that described first magnetic air gap is formed between the pole piece post external diameter of described train wheel bridge, described first magnet and described T iron to form.
4. magnetic circuit according to claim 1 is characterized in that described first magnet is a ferrimagnet, and described second magnet is a neodymium iron boron magnetic body.
5. coaxial loudspeaker, it is characterized in that comprising first voice coil loudspeaker voice coil, second voice coil loudspeaker voice coil, the bass cone, the high frequency audio film, train wheel bridge, first magnet, second magnet, the magnetic conductance plate, T iron, wherein, wherein, at described train wheel bridge, form first magnetic air gap between described first magnet and the described T iron, at described T iron, form second magnetic air gap between described magnetic conductance plate and described second magnet, described first voice coil loudspeaker voice coil is suspended in described first magnetic air gap and with described bass cone and is connected, when energising, drive described bass cone as bass unit, described second voice coil loudspeaker voice coil is suspended in described second magnetic air gap and with described ball top sound film and is connected, and drives described ball top sound film as voice unit when energising.
6. magnetic circuit according to claim 5, the pole piece column top that it is characterized in that described T iron has a circular groove, described circular groove forms a magnetic conductance bowl, and described second magnetic air gap forms between described magnetic conductance bowl, described magnetic conductance plate and described neodymium iron boron magnetic body.
7. magnetic circuit according to claim 5 is characterized in that described first magnetic air gap is formed between the pole piece post external diameter of described train wheel bridge, described first magnet and described T iron to form.
8. magnetic circuit according to claim 5 is characterized in that described first magnet is a ferrimagnet, and described second magnet is a neodymium iron boron magnetic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202463981U CN201594910U (en) | 2009-10-26 | 2009-10-26 | Coaxial loudspeaker magnetic circuit and coaxial loudspeaker comprising the magnetic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202463981U CN201594910U (en) | 2009-10-26 | 2009-10-26 | Coaxial loudspeaker magnetic circuit and coaxial loudspeaker comprising the magnetic circuit |
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| CN201594910U true CN201594910U (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202463981U Expired - Fee Related CN201594910U (en) | 2009-10-26 | 2009-10-26 | Coaxial loudspeaker magnetic circuit and coaxial loudspeaker comprising the magnetic circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104782143A (en) * | 2012-09-17 | 2015-07-15 | 马格亚创新联盟 | Coaxial loudspeaker arrangement |
| CN104994458A (en) * | 2015-08-11 | 2015-10-21 | 余业祺 | Loudspeaker |
| CN110312188A (en) * | 2019-06-03 | 2019-10-08 | 深圳市宝业恒实业股份有限公司 | A kind of coaxial neodymium iron boron loudspeaker of high sensitivity magnetic structure |
| CN113596687A (en) * | 2021-08-27 | 2021-11-02 | 歌尔科技有限公司 | Speaker and electronic apparatus |
-
2009
- 2009-10-26 CN CN2009202463981U patent/CN201594910U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104782143A (en) * | 2012-09-17 | 2015-07-15 | 马格亚创新联盟 | Coaxial loudspeaker arrangement |
| CN104782143B (en) * | 2012-09-17 | 2018-03-30 | 马格亚创新联盟 | Coaxial loudspeaker structure |
| CN104994458A (en) * | 2015-08-11 | 2015-10-21 | 余业祺 | Loudspeaker |
| CN110312188A (en) * | 2019-06-03 | 2019-10-08 | 深圳市宝业恒实业股份有限公司 | A kind of coaxial neodymium iron boron loudspeaker of high sensitivity magnetic structure |
| CN113596687A (en) * | 2021-08-27 | 2021-11-02 | 歌尔科技有限公司 | Speaker and electronic apparatus |
| CN113596687B (en) * | 2021-08-27 | 2022-10-28 | 歌尔科技有限公司 | Speaker and electronic apparatus |
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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: 20100929 Termination date: 20121026 |