CN2275780Y - Magnetic circuit apparatus for loudspeaker - Google Patents
Magnetic circuit apparatus for loudspeaker Download PDFInfo
- Publication number
- CN2275780Y CN2275780Y CN 96244616 CN96244616U CN2275780Y CN 2275780 Y CN2275780 Y CN 2275780Y CN 96244616 CN96244616 CN 96244616 CN 96244616 U CN96244616 U CN 96244616U CN 2275780 Y CN2275780 Y CN 2275780Y
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnet
- magnetic circuit
- loudspeaker
- magnetic conductive
- 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.)
- Expired - Fee Related
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to a magnetic circuit apparatus for a loudspeaker, which comprises an annular yoke iron, a magnetic conductive post, a magnet and a magnetic conductive slice, wherein, the magnetic conductive post is positioned in the annular yoke iron for enhancing the density of magnetic beams and preventing magnetic leakage. The size of the magnetic conductive post is adjusted according to the size of the magnet so as to adjust the intensity of magnetic force of a working gap of a magnetic circuit. The magnet is arranged on the magnetic conductive post and is positioned at the central part of the annular yoke iron. The magnetic conductive slice is arranged on the magnet. A short circuit element can be arranged on the magnetic conductive slice and can be used as the short circuit of a secondary coil of a voice coil so as to cause electrical inductance of the voice coil to be close to zero, prevent the harmonic distortion and extend high frequency. The size of the magnetic circuit apparatus for a loudspeaker of the utility model can be reduced, and the utility model can be utilized in a broadband loudspeaker.
Description
The utility model relates to a kind of magnetic circuit device of loud speaker, relates to particularly that a kind of volume is little, magnetic force is strong, and can be used in the magnetic circuit device of broadband loudspeaker.
The magnetic circuit structure of general broadband loudspeaker uses external magnetic type structure mostly, external magnetic circuit except volume greatly, also have the big problem of leakage field.In addition, concerning the magnetic circuit of loudspeaker of high-frequency range, utilize internal magnetization structure mostly, as shown in Figure 1, this internal magnetization magnetic circuit 11 mainly is made of with alnico magnet 14 a ring-like yoke 12, pole plate 13 and one.Though this kind internal magnetization magnetic circuit 11 has ring-like yoke 12 to surround can make from the flux of magnet leakiness to outside,, there is the problem that magnetic force is less, magnetic flux density is low in it.
Main purpose of the present utility model is to provide the magnetic circuit device of the loud speaker that a kind of volume is little, magnetic force is strong.
For achieving the above object, the utility model is taked following measure:
The magnetic circuit device of the utility model loud speaker, comprise a ring-like yoke, a ferromagnetic magnet of tool and a magnetic conduction sheet, this magnet is located at this ring-like yoke central portion, this magnetic conduction sheet is located on the magnet in the ring-like yoke, it is characterized in that: below magnet, be provided with a conducting magnetic column in this ring-like yoke, in order to strengthen flux density and to prevent leakage field, can adjust its size according to the magnetic size simultaneously, and then adjust the magnetic force size of magnetic gap in the loop.
The concrete structure of the magnetic circuit device of loud speaker of the present utility model is as follows:
The magnetic circuit device of loud speaker of the present utility model comprises a ring-like yoke, a magnet and a magnetic conduction sheet, and magnet is located in the ring-like yoke, and magnetic conduction sheet is located at above the magnet in the ring-like yoke, it is characterized in that:
Described magnet below is provided with a conducting magnetic column of being made by permeability magnetic material in addition.
The magnetic circuit device of described loud speaker is characterized in that:
Be covered with a short-circuit component on the described magnetic conduction sheet.
The magnetic circuit device of described loud speaker is characterized in that:
Described conducting magnetic column and magnetic conduction sheet are to make with ferrous material.
The magnetic circuit device of described loud speaker is characterized in that:
Described magnet is a nd-fe-b magnet.
The utlity model has following effect:
Owing to adopt the rubidium iron boron magnet, can utilize the little magnetic circuit of volume just can obtain enough work magnetic fluxs, can dwindle the volume of the magnetic circuit device of loud speaker, and can be with the broadband loudspeaker that is used for of its success.Owing on magnetic conduction sheet, increase by a short-circuit component, utilize this short-circuit component to can be used as the secondary coil short circuit usefulness of voice coil loudspeaker voice coil, and make the inductance of voice coil loudspeaker voice coil approach zero, to prevent harmonic distortion and extended high frequency.
Be elaborated below by most preferred embodiment and accompanying drawing magnetic circuit device to loud speaker of the present utility model, in the accompanying drawing:
Fig. 1 is the stereogram of the external magnetic circuit device of loud speaker in the past.
Fig. 2 is the exploded view of the utility model preferred embodiment.
Fig. 3 is the combination section of the utility model preferred embodiment.
Fig. 4 is the additional exploded view that the magnetic circuit device of short-circuit component is arranged of the utility model preferred embodiment.
Shown in Fig. 2,3, the magnetic circuit device of loud speaker of the present utility model comprises a ring-like yoke 10, conducting magnetic column 20, a magnet 30 and a magnetic conduction sheet 40, conducting magnetic column 20 is made of the good iron prop of magnetic conductivity, and be placed in the inner bottom of ring-like yoke 10, magnet 30 is made of nd-fe-b magnet, and be positioned at the top of the conducting magnetic column 20 of ring-like yoke 10 bottoms, and be bonded together with conducting magnetic column 20, magnetic conduction sheet 40 places the top of magnetic 30, and be bonded together with magnetic 30, form an internal magnetic type magnetic circuit device by this.
In addition, as shown in Figure 4, above magnetic conduction sheet 40, more can cover a unification short-circuit component 50, with will be, and make the inductance of voice coil loudspeaker voice coil approach zero, have the effect of harmonic distortion of preventing and extended high frequency as the secondary coil short circuit of voice coil loudspeaker voice coil.
By cooperating of above-mentioned conducting magnetic column 20 and magnet 30, just can obtain required magnetic force, reach purpose easy to use.
In addition, magnet 30 of the present utility model is to use powerful nd-fe-b magnet to constitute, so can will be applicable in the broadband loudspeaker by its formed internal magnetization magnetic circuit structure.
Claims (4)
1, a kind of magnetic circuit device of loud speaker comprises a ring-like yoke, a magnet and a magnetic conduction sheet, and magnet is located in the ring-like yoke, and magnetic conduction sheet is located at above the magnet in the ring-like yoke, it is characterized in that:
Described magnet below is provided with a conducting magnetic column of being made by permeability magnetic material in addition.
2, the magnetic circuit device of loud speaker according to claim 1 is characterized in that:
Be covered with a short-circuit component on the described magnetic conduction sheet.
3, the magnetic circuit device of loud speaker according to claim 1 is characterized in that:
Described conducting magnetic column and magnetic conduction sheet are to make with ferrous material.
4, the magnetic circuit device of loud speaker according to claim 1 is characterized in that:
Described magnet is a nd-fe-b magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244616 CN2275780Y (en) | 1996-11-22 | 1996-11-22 | Magnetic circuit apparatus for loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244616 CN2275780Y (en) | 1996-11-22 | 1996-11-22 | Magnetic circuit apparatus for loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2275780Y true CN2275780Y (en) | 1998-03-04 |
Family
ID=33917927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96244616 Expired - Fee Related CN2275780Y (en) | 1996-11-22 | 1996-11-22 | Magnetic circuit apparatus for loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2275780Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807466A (en) * | 2010-03-08 | 2010-08-18 | 潘君昂 | Repolarization magnetic splicing method for magnet |
| CN114598975A (en) * | 2022-03-17 | 2022-06-07 | 苏州登堡电子科技有限公司 | Double-magnet bone conduction loudspeaker |
-
1996
- 1996-11-22 CN CN 96244616 patent/CN2275780Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807466A (en) * | 2010-03-08 | 2010-08-18 | 潘君昂 | Repolarization magnetic splicing method for magnet |
| CN114598975A (en) * | 2022-03-17 | 2022-06-07 | 苏州登堡电子科技有限公司 | Double-magnet bone conduction loudspeaker |
| CN114598975B (en) * | 2022-03-17 | 2024-03-19 | 苏州登堡电子科技有限公司 | Double-magnet bone conduction loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |