CN101330772A - Thin type loudspeaker without magnetic conductive yoke - Google Patents
Thin type loudspeaker without magnetic conductive yoke Download PDFInfo
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- CN101330772A CN101330772A CNA2008100229180A CN200810022918A CN101330772A CN 101330772 A CN101330772 A CN 101330772A CN A2008100229180 A CNA2008100229180 A CN A2008100229180A CN 200810022918 A CN200810022918 A CN 200810022918A CN 101330772 A CN101330772 A CN 101330772A
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- voice coil
- magnet
- pole core
- coil loudspeaker
- loudspeaker voice
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Abstract
The invention relates to a loudspeaker, in particular to a thin-type loudspeaker adopting a novel magnetic circuit structure instead of a magnetic conductive yoke. According to the technical proposal provided by the invention, a main magnet, a magnetic pole core and an auxiliary magnet are arranged at the bottom of the cone frame and on the cone frame with a closed bottom part, and closely combined with each other; a voice coil surrounds the main magnet, the magnetic pole core and the auxiliary magnet; a voice cone provided with an edge is arranged at the upper part of the cone frame; the marginal part of the voice cone is closely combined with the cone frame, and the middle-pore part at the bottom thereof is closely combined with the outer wall of the voice coil; a positioning support piece is arranged at the lower part of the voice cone provided with the edge; the marginal part of the positioning support piece is closely combined with the cone frame, and the middle-pore part thereof is closely combined with the outer wall of the voice coil. The loudspeaker has the advantages that the cone frame with the closed bottom is adopted; the magnetic conductive yoke structure is omitted, so as to ensure that the thickness of the loudspeaker is further optimized; at the same time, an auxiliary magnet is applied; the flux density reduced due to the omitted magnetic conductive yoke is enhanced, so that the sound performance is improved; furthermore, the loudspeaker is suitable for use in novel flat-plate video equipment.
Description
Technical field
The present invention relates to loud speaker, specifically a kind of thin speaker that adopts novel magnetic structure without conductive magnetic yoke.
Background technology
Be applied to the loud speaker of plate video equipments such as LCD, PDP now, the general internal magnetic circuit structure that adopts, the magnet centering, the conductive magnetic yoke that is the U type on every side around a section, also be usually said U iron, this kind magnetic structure is compared external magnetic circuit, and shared volume is little, can effectively reduce the thickness of whole loadspeaker structure.But, because the existence of U iron makes loadspeaker structure can't optimize thinlyyer.
Summary of the invention
The object of the present invention is to provide a kind of thin speaker without conductive magnetic yoke, this loudspeaker unit can make loadspeaker structure thinner, and acoustic performance and conventional loudspeakers relatively do not have obvious reduction, therefore is specially adapted to plate video equipments such as LCD, PDP.
According to design provided by the present invention, directly be provided with main magnet in the bottom of basin frame, on main magnet, magnetic pole core is set, auxiliary magnet is set on magnetic pole core, voice coil loudspeaker voice coil be looped around main magnet, magnetic pole core and auxiliary magnet around.
Main magnet is identical with the structure of auxiliary magnet, polar repulsion.Combine closely with the bottom of basin frame under the described main magnet.Combine closely between described main magnet and the magnetic pole core, combine closely between described magnetic pole core and the auxiliary magnet.The outer wall of voice coil loudspeaker voice coil and the centre bore of locating branch slice are combined closely, and the middle part of the edge of described locating branch slice and basin frame interconnects.
The outer wall of voice coil loudspeaker voice coil interconnects with the centre bore of the sound basin of band ring, and the edge of sound basin and basin frame interconnect.The outer wall of voice coil loudspeaker voice coil is connected with the centre bore of locating branch slice, and the edge of described locating branch slice is connected with the middle part of basin frame; The outer wall of voice coil loudspeaker voice coil is connected with the centre bore of the sound basin of being with ring simultaneously, and the edge of sound basin is connected with the top of basin frame; Make voice coil suspension around magnet, magnetic pole core and auxiliary magnet; Described sound basin is arranged on the top of locating branch slice.
Top at voice coil loudspeaker voice coil is provided with dust cover.Side at the basin frame is provided with terminal block, and the lead-in wire of voice coil loudspeaker voice coil is attached to the upper surface of sound basin, and the lead-in wire and the lead-out wire of voice coil loudspeaker voice coil interconnect, and the other end of lead-out wire is connected with terminal block.
Advantage of the present invention is: adopt the airtight basin frame in bottom, dispensed the conductive magnetic yoke structure, make that loud speaker thickness is further optimized, use an auxiliary magnet simultaneously, improve because of saving the magnetic flux density that conductive magnetic yoke reduces, acoustic performance is improved, to be applicable to the novel flat-plate video equipment.
Description of drawings
Fig. 1 is this invention loud speaker sectional structure chart.
Fig. 2 is a magnetic speaker sectional structure chart in the tradition.
Embodiment
The thin speaker of this novel magnetic structure, employing is with the airtight basin frame 1 in bottom, be provided with a cylindric main magnet 2 in basin frame 1 bottom, be provided with a cylindric magnetic pole core 3 directly over the cylindric main magnet 2, be provided with a cylindric auxiliary magnet 4 directly over the magnetic pole core 3, cylindric main magnet 2 is identical with auxiliary magnet 4 structures, polar repulsion, main magnet 2 and magnetic pole core 3 and auxiliary magnet 4 are combined closely, and combine closely with basin frame 1 bottom under the main magnet 2.Around main magnet 2, magnetic pole core 3 and auxiliary magnet 4, voice coil loudspeaker voice coil 5 around a band lead-in wire, the centre bore of the outer wall of voice coil loudspeaker voice coil 5 and locating branch slice 6 is combined closely, the edge of locating branch slice 6 and basin frame 1 are combined closely, band ring sound basin 7 is arranged on locating branch slice 6 tops, its middle pitch basin 7 bottom centre holes and voice coil loudspeaker voice coil 5 outer walls are combined closely, and sound basin 7 edges and basin frame 1 are combined closely.Sound basin 7 bottom centre holes, locating branch slice 6 centre bores and voice coil loudspeaker voice coil 5 are combined closely, make voice coil loudspeaker voice coil 5 can be suspended in magnet 2, magnetic pole core 3 and auxiliary magnet 4 around, voice coil loudspeaker voice coil 5 tops are provided with a dust cover 8.Side at basin frame 1 is provided with terminal block 10, and voice coil loudspeaker voice coil 5 lead-in wires are connected with lead-out wire 9 attached to sound basin 1 upper surface, and lead-out wire 9 is connected with terminal block 10.
Behind terminal block 10 input electrical signals, the signal of telecommunication drives voice coil loudspeaker voice coil 5 and pumps by terminal block 10 and lead-out wire 9, and voice coil loudspeaker voice coil 5 drives 7 vibrations of sound basin, to external radiation sound.
Because the mesopore of sound basin 7 is combined closely with the mesopore of locating branch slice 6 and the outer wall of voice coil loudspeaker voice coil 5, support each other, make voice coil loudspeaker voice coil 5 be suspended in main magnet 2, magnetic pole core 3 and auxiliary magnet 4 around.7 vibrations of voice coil loudspeaker voice coil 5 energising rear drive sound basins are to external radiation sound.
Structure of the present invention has been removed traditional conductive magnetic yoke 11, make the height of this novel interior magnetic speaker magnetic circuit part be reduced, owing to be provided with auxiliary magnet 4, make the magnetic circuit driving force not reduce, optimized loadspeaker structure to greatest extent under the prerequisite that guarantees acoustic performance, the magnetic speaker structure is thinner in feasible being somebody's turn to do.
Claims (9)
1, a kind of thin speaker without conductive magnetic yoke, it is characterized in that: directly be provided with main magnet (2) in the bottom of basin frame (1), magnetic pole core (3) is set on main magnet (2), auxiliary magnet (4) is set on magnetic pole core (3), voice coil loudspeaker voice coil (5) be looped around main magnet (2), magnetic pole core (3) and auxiliary magnet (4) around.
2, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: main magnet (2) is identical with the structure of auxiliary magnet (4), polar repulsion.
3, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: combine closely with the bottom of basin frame (1) under the described main magnet (2).
4, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: combine closely between described main magnet (2) and the magnetic pole core (3), combine closely between described magnetic pole core (3) and the auxiliary magnet (4).
5, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: the centre bore of the outer wall of voice coil loudspeaker voice coil (5) and locating branch slice (6) is combined closely, and the middle part of the edge of described locating branch slice (6) and basin frame (1) interconnects.
6, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: the outer wall of voice coil loudspeaker voice coil (5) interconnects with the centre bore of the sound basin (7) of band ring, and the edge of sound basin (7) and basin frame (1) interconnect.
7, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: the outer wall of voice coil loudspeaker voice coil (5) is connected with the centre bore of locating branch slice (6), and the edge of described locating branch slice (6) is connected with the middle part of basin frame (1); The outer wall of voice coil loudspeaker voice coil (5) is connected with the centre bore of the sound basin (7) of being with ring simultaneously, and the edge of sound basin (7) is connected with the top of basin frame (1); Make voice coil loudspeaker voice coil (5) be suspended in magnet (2), magnetic pole core (3) and auxiliary magnet (4) around; Described sound basin (7) is arranged on the top of locating branch slice (6).
8, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: be provided with dust cover (8) at the top of voice coil loudspeaker voice coil (5).
9, according to claim 1 without the thin speaker of conductive magnetic yoke, it is characterized in that: the side at basin frame (1) is provided with terminal block (10), the lead-in wire of voice coil loudspeaker voice coil (5) is attached to the upper surface of sound basin (1), and, the lead-in wire of voice coil loudspeaker voice coil (5) and lead-out wire (9) interconnect, and the other end of lead-out wire (9) is connected with terminal block (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100229180A CN101330772A (en) | 2008-07-02 | 2008-07-02 | Thin type loudspeaker without magnetic conductive yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100229180A CN101330772A (en) | 2008-07-02 | 2008-07-02 | Thin type loudspeaker without magnetic conductive yoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101330772A true CN101330772A (en) | 2008-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100229180A Pending CN101330772A (en) | 2008-07-02 | 2008-07-02 | Thin type loudspeaker without magnetic conductive yoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101330772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101616352A (en) * | 2009-07-01 | 2009-12-30 | 无锡杰夫电声有限公司 | The thin speaker that has waved vibrating plate |
| CN103974173A (en) * | 2014-05-23 | 2014-08-06 | 无锡杰夫电声有限公司 | High directivity loudspeaker of curved face |
-
2008
- 2008-07-02 CN CNA2008100229180A patent/CN101330772A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101616352A (en) * | 2009-07-01 | 2009-12-30 | 无锡杰夫电声有限公司 | The thin speaker that has waved vibrating plate |
| CN103974173A (en) * | 2014-05-23 | 2014-08-06 | 无锡杰夫电声有限公司 | High directivity loudspeaker of curved face |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20081224 |