CN2425469Y - Outer magnetic loudspeaker magnetic loop - Google Patents
Outer magnetic loudspeaker magnetic loop Download PDFInfo
- Publication number
- CN2425469Y CN2425469Y CN 00217770 CN00217770U CN2425469Y CN 2425469 Y CN2425469 Y CN 2425469Y CN 00217770 CN00217770 CN 00217770 CN 00217770 U CN00217770 U CN 00217770U CN 2425469 Y CN2425469 Y CN 2425469Y
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- Prior art keywords
- magnetic
- steel
- upper plate
- magnet
- center
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- Expired - Fee Related
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Abstract
The utility model relates to a magnetic loop for an outer magnetic type loudspeaker, which comprises an upper plate 1, a magnetic steel 2, a lower plate 3 and a core column 4. The magnet steel forms a ring shape, and the upper side and the lower side of the magnet steel are respectively fixed with an upper plate and a lower plate. The lower end of the core column is fixed with the center of the lower plate, the upper end of the core column extends out from a hole at the center of the upper plate, and a gap 5 between the hole at the center of the upper plate and the core column is a magnetic gap. The magnetic steel 2 is provided with one or multiple lateral openings 6, provides a passage way for the inner part of the magnetic loop and the outside world, and has good heat dispersion function. The magnetic steel is divided into multiple magnetic steel blocks and is easy to process, the thickness can also be larger, and the utility model is beneficial for producing the magnetic steel of the loudspeaker with large caliber and long stroke.
Description
The utility model relates to a kind of structure of outer-magnet speaker magnetic loop.
The outer-magnet speaker magnetic loop generally comprises upper plate, magnet steel, lower plate and stem.Magnet steel circularizes, it top and followingly fix with upper plate and lower plate respectively, the lower end of stem and the center of lower plate fix, there is a hole at the center of upper plate, stretch out from the hole at upper plate center the upper end of stem, and the hole and the gap between the stem at upper plate center are the magnetic gap that is used for inserting loudspeaker voice coil.Magnet steel then is the magnetic field sources of magnetic loop.The material of magnet steel generally adopts barium ferrite and strontium ferrite, and the shape of magnet steel all adopts annular.Because loud speaker develops to high-power direction, the outer-magnet speaker magnetic loop of said structure exists voice coil loudspeaker voice coil to be difficult for the problem of heat radiation, in case power of loudspeaker strengthens, causes voice coil loudspeaker voice coil to burn out easily.
The purpose of this utility model is the structure that proposes a kind of outer-magnet speaker magnetic loop of easy heat radiation.
This outer-magnet speaker magnetic loop comprises upper plate, magnet steel, lower plate and stem, magnet steel circularizes, it top and followingly fix with upper plate and lower plate respectively, the lower end of stem and the center of lower plate fix, there is a hole at the center of upper plate, stretch out from the hole at upper plate center the upper end of stem, and the hole and the gap between the stem at upper plate center are the magnetic gap that is used for inserting loudspeaker voice coil, and the opening of a side direction is arranged on the described magnet steel.
This outer-magnet speaker magnetic loop because the opening of a side direction is arranged on the magnet steel, makes the inner space of magnetic loop be connected with the external world.When speaker operation, along with the vibration of voice coil loudspeaker voice coil, the air of magnetic loop inside will constantly be sucked into and discharge, and exchanges with the external world, plays good thermolysis.
Accompanying drawing 1 is the structure chart of this outer-magnet speaker magnetic loop;
Accompanying drawing 2 is the A-A cutaway view of Fig. 1;
Accompanying drawing 3 is the another kind of structure chart of outer-magnet speaker magnetic loop;
Accompanying drawing 4 is another structure chart of outer-magnet speaker magnetic loop.
As depicted in figs. 1 and 2, this outer-magnet speaker magnetic loop, comprise upper plate 1, magnet steel 2, lower plate 3 and stem 4, magnet steel circularizes, it top and followingly fix with upper plate and lower plate respectively, the lower end of stem and the center of lower plate fix, and stretch out from the hole at upper plate center the upper end of stem, and the hole and the gap between the stem 5 at upper plate center are the magnetic gap that is used for inserting loudspeaker voice coil.The opening 6 that one side direction is arranged on the magnet steel 2 is magnetic loop inside and the extraneous path that a breathing is provided.As shown in the figure, on the lateral openings 6 on the magnet steel 2 filter screen 7 can also be arranged, in order to block dust.The general material that adopts non-magnetic conduction of the material of filter screen, for example aluminium or copper.
As shown in Figure 3, the lateral openings 6 on the magnet steel 2 of this outer-magnet speaker magnetic loop can have more than two, and magnet steel is divided into several fan-shaped magnetic steel ingots 8.Four openings are arranged, four fan-shaped magnetic steel ingots among the figure.Like this, not only increased the thermal dissipating path of magnetic loop, and magnet steel is easy to processing after breaking the whole up into parts, its thickness also can be done greatlyyer, and the magnet steel of manufacturing heavy caliber, long stroke loud speaker is just much easier.
Different shapes such as the magnetic steel ingot of this outer-magnet speaker magnetic loop can also be done in echelon, rectangle, square are assembled into them circular, even other shape is as long as can form a concentrated magnetic field at the magnetic gap place.Adopt the polylith magnetic steel ingot to be assembled into the outer-magnet speaker magnetic loop, can be assembled into the outer-magnet speaker magnetic loop of different size with the magnetic steel ingot of same size.Being shaped as of magnetic steel ingot 9 shown in Figure 4 is trapezoidal, has eight among the figure.If magnetic steel ingot is increased to nine or ten, just can obtain the bigger loud speaker magnetic loop of diameter.Filter screen among the figure is one to be in the annular filter screen 10 of the inwall of magnetic steel ingot 9.The dependence thing of such annular filter screen when simultaneously double as is the magnetic steel ingot assembling.
Claims (5)
1, a kind of outer-magnet speaker magnetic loop, comprise upper plate (1), magnet steel (2), lower plate (3) and stem (4), magnet steel circularizes, it top and followingly fix with upper plate and lower plate respectively, the lower end of stem and the center of lower plate fix, there is a hole at the center of upper plate, stretch out from the hole at upper plate center the upper end of stem, the hole at upper plate center and the gap between the stem (5) are the magnetic gap that is used for inserting loudspeaker voice coil, it is characterized in that having on the described magnet steel (2) opening (6) of a side direction.
2, outer-magnet speaker magnetic loop as claimed in claim 1 is characterized in that on the lateral openings (6) on the described magnet steel (2) filter screen (7) being arranged.
3, outer-magnet speaker magnetic loop as claimed in claim 1 or 2 is characterized in that the lateral openings (6) on the described magnet steel (2) has more than two, and magnet steel is divided into several fan-shaped magnetic steel ingots (8).
4, outer-magnet speaker magnetic loop as claimed in claim 3 is characterized in that described magnet steel (2) is divided into several trapezoidal magnetic steel ingots (9).
5, outer-magnet speaker magnetic loop as claimed in claim 4 is characterized in that described filter screen is one to be in the annular filter screen (10) of the inwall of magnetic steel ingot (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217770 CN2425469Y (en) | 2000-05-23 | 2000-05-23 | Outer magnetic loudspeaker magnetic loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00217770 CN2425469Y (en) | 2000-05-23 | 2000-05-23 | Outer magnetic loudspeaker magnetic loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2425469Y true CN2425469Y (en) | 2001-03-28 |
Family
ID=33583281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00217770 Expired - Fee Related CN2425469Y (en) | 2000-05-23 | 2000-05-23 | Outer magnetic loudspeaker magnetic loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2425469Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107995569A (en) * | 2017-12-22 | 2018-05-04 | 厦门东声电子有限公司 | A kind of more magnetic loudspeaker driving structures and more magnetic loudspeakers |
-
2000
- 2000-05-23 CN CN 00217770 patent/CN2425469Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107995569A (en) * | 2017-12-22 | 2018-05-04 | 厦门东声电子有限公司 | A kind of more magnetic loudspeaker driving structures and more magnetic loudspeakers |
| CN107995569B (en) * | 2017-12-22 | 2024-06-07 | 厦门东声电子有限公司 | Multi-magnetic loudspeaker driving structure and multi-magnetic loudspeaker |
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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: 20010328 |