CN201450586U - Magnetic circuit structure of bass loudspeaker - Google Patents
Magnetic circuit structure of bass loudspeaker Download PDFInfo
- Publication number
- CN201450586U CN201450586U CN2009200561689U CN200920056168U CN201450586U CN 201450586 U CN201450586 U CN 201450586U CN 2009200561689 U CN2009200561689 U CN 2009200561689U CN 200920056168 U CN200920056168 U CN 200920056168U CN 201450586 U CN201450586 U CN 201450586U
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- washer
- magnetic circuit
- magnetic
- permanent magnet
- utility
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Abstract
The utility model relates to a magnetic circuit structural method of a bass loudspeaker, which is characterized in that the surface of a washer part facing a T iron adopts a concavo-convex staggered shape. The structure can extend the range of a uniform magnetic field on one hand, and can also enlarge the stroke of the loudspeaker, reduce the distortion, and improve the capability of converging magnetic energy on the other hand. The washer structural method provided by the utility model achieves a larger utilization ratio of the magnetic energy of a magnetic return path of the loudspeaker, larger stroke and less distortion, thereby producing favorable effect of low frequency.
Description
Technical field
The utility model relates to the magnetic circuit structure in loud speaker field, particularly a kind of woofer.
Background technology
The structure of the conventional loudspeakers on the market is now: a T iron, a permanent magnet, a washer, a voice coil loudspeaker voice coil.Permanent magnet provides instigates the necessary magnetic field of voice coil loudspeaker voice coil, by the magnetic conduction washer, forms with voice coil loudspeaker voice coil and to instigate assembly, by electricity-Li transformation, thereby promotes the air radiative acoustic wave.But this structure does not make full use of the magnetic energy of permanent magnet, is difficult to obtain bigger stroke, and big distortion is arranged, and is difficult to produce good low-frequency effect.Another kind of structure commonly used is: the head of T iron center pillar is "T"-shaped.Though the more above-mentioned field distortion of this structure is less, but still is difficult to reach very big stroke, thereby make that loud speaker is difficult to good low frequency performance is arranged.
The utility model content
According to magnetic field theory, in the magnetic circuit of loud speaker, be in the voice coil loudspeaker voice coil in the magnetic gap if bigger linear stroke will be arranged, the washer that matches with permanent magnet will have bigger thickness.But contradiction is with it, if washer is thicker, the flux in the magnetic gap spreads out, and is difficult to obtain stronger flux density, is short of power when causing loud speaker to need big stroke, is difficult to embody the due low-frequency effect of source of sound.In order to remedy the deficiency of existing product, solve this contradiction, the utility model provides a kind of magnetic circuit building method of woofer.The magnetic circuit structure of woofer comprises: at least one washer, a permanent magnet, a T iron and a voice coil loudspeaker voice coil, and permanent magnet is placed on the T iron, and washer is placed on the permanent magnet, and described washer is the concavo-convex shape that is interspersed.
Described washer 1 is formed by three different washer superpositions of size, forms the concavo-convex shape that is interspersed.
Described washer is one and has the be interspersed washer of shape of convex-concave.
This structure both can provide enough washer thickness to make loud speaker that bigger stroke be arranged, and less distortion can utilize its thin characteristics effectively to assemble magnetic energy simultaneously again, thereby make loud speaker that good low-frequency effect be arranged.
Description of drawings
Fig. 1: the magnetic circuit cutaway view of habitual woofer.
Fig. 2: the magnetic circuit cutaway view of the another kind of make of habitual woofer.
The magnetic circuit cutaway view of Fig. 3: the utility model embodiment one.
The magnetic circuit cutaway view of Fig. 4: the utility model embodiment two.
Embodiment
As shown in Figure 3, the magnetic circuit structure of the woofer of the embodiment one of the utility model, comprise: T iron 3, permanent magnet 2, washer 1,4,5 and voice coil loudspeaker voice coil 6. permanent magnets 2 be placed on the T iron 3, three washers 1 of superposition on permanent magnet 2,4, since the thickness of washer 4 less than washer 1,5, so can think and be distributed in T iron center pillar and washer 1,5 magnetic gap is a uniform magnetic field, the adding of washer 4 is with regard to the whole thickness that has increased the washer part like this, for the big stroke movement of loud speaker has been created condition, again since the size of washer 4 less than washer 1,5, make magnetic energy at washer 1,5 with T iron in the magnetic gap of intercolumniation fully assemble, can improve the utilance that permanent magnet produces magnetic energy like this. like this, loud speaker will have bigger stroke, less distortion, thus good low-frequency effect produced.
As shown in Figure 4, the magnetic circuit of the woofer of the embodiment two of the utility model structure comprises: T iron 3, permanent magnet 2, washer 1, voice coil loudspeaker voice coil 6.Permanent magnet 2 is placed on the T iron 3, and washer 1 is placed on the permanent magnet 2, because the shape that the convex-concave of washer 1 is interspersed makes loud speaker that bigger stroke, less distortion be arranged again when making full use of permanent magnet magnetic energy.Therefore, loud speaker will have good low frequency performance.
The above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (3)
1. the magnetic circuit of woofer is constructed, comprise: at least one washer (1), a permanent magnet (2), a T iron (3) and a voice coil loudspeaker voice coil (6), permanent magnet (2) is placed on the T iron (3), washer (1) is placed on the permanent magnet (2), it is characterized in that: described washer (1) is the concavo-convex shape that is interspersed.
2. the magnetic circuit of woofer according to claim 1 is constructed, and it is characterized in that: described washer (1) is formed by three different washer (1), (4), (5) superpositions of size, forms the concavo-convex shape that is interspersed.
3. the magnetic circuit of woofer according to claim 1 structure is characterized in that: described washer (1) is one and has the be interspersed washer of shape of convex-concave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200561689U CN201450586U (en) | 2009-05-08 | 2009-05-08 | Magnetic circuit structure of bass loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200561689U CN201450586U (en) | 2009-05-08 | 2009-05-08 | Magnetic circuit structure of bass loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450586U true CN201450586U (en) | 2010-05-05 |
Family
ID=42555308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200561689U Expired - Fee Related CN201450586U (en) | 2009-05-08 | 2009-05-08 | Magnetic circuit structure of bass loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450586U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114143676A (en) * | 2021-11-10 | 2022-03-04 | 赣州鑫冠科技股份有限公司 | Washer for horn bracket convenient for magnetic conduction |
| WO2022062332A1 (en) * | 2020-09-23 | 2022-03-31 | 苏州登堡电子科技有限公司 | Composite washer magnetic circuit assembly of bone conduction speaker |
-
2009
- 2009-05-08 CN CN2009200561689U patent/CN201450586U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062332A1 (en) * | 2020-09-23 | 2022-03-31 | 苏州登堡电子科技有限公司 | Composite washer magnetic circuit assembly of bone conduction speaker |
| CN114143676A (en) * | 2021-11-10 | 2022-03-04 | 赣州鑫冠科技股份有限公司 | Washer for horn bracket convenient for magnetic conduction |
| CN114143676B (en) * | 2021-11-10 | 2024-06-11 | 赣州鑫冠科技股份有限公司 | Washer with convenient magnetic conduction for loudspeaker support |
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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: 20100505 Termination date: 20130508 |