CN101697602B - Magnetic circuit of loudspeaker with heat dissipation block - Google Patents
Magnetic circuit of loudspeaker with heat dissipation block Download PDFInfo
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- CN101697602B CN101697602B CN 200910035582 CN200910035582A CN101697602B CN 101697602 B CN101697602 B CN 101697602B CN 200910035582 CN200910035582 CN 200910035582 CN 200910035582 A CN200910035582 A CN 200910035582A CN 101697602 B CN101697602 B CN 101697602B
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- heat dissipation
- pole core
- magnetic pole
- radiating block
- basin frame
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Abstract
The invention relates to a magnetic circuit of a loudspeaker with a heat dissipation block. According to the technical scheme provided by the invention, a main magnetic body is fixed on the upper surface of the bottom of a frame, a magnetic pole core is arranged right above the main magnetic body, and an auxiliary magnetic body is arranged right above the magnetic pole core; the lower surface of the main magnetic body is tightly combined with the upper surface of the bottom of the frame; the main magnetic body, the magnetic pole core and the auxiliary magnetic body are tightly combined; and voice coils encircle the main magnetic body, the magnetic pole core and the auxiliary magnetic body. The magnetic circuit of the loudspeaker is characterized in that: the lower surface of the bottom of the frame is provided with the heat dissipation block, and the shape of the upper surface of the heat dissipation block corresponds to the shape of the lower surface of the bottom of the frame so as to form tight combination. The bottom of the frame is provided with the heat dissipation block so that most of heat produced when the magnetic circuit of the loudspeaker works is transferred to the heat dissipation block through the bottom of the frame, and then the heat is gradually dissipated out by the heat dissipation block through the external surface, so the reliability of long-term work of the loudspeaker is ensured; and the heat dissipation block has novel and reasonable shape and high heat dissipation efficiency.
Description
Technical field
The present invention relates to a kind of appurtenances of loud speaker, specifically a kind of magnetic circuit of loudspeaker that is provided with radiating block.
Background technology
Be applied to now the loud speaker of the plate video equipments such as LCD, PDP, for so that loadspeaker structure is optimized thinlyyer, the airtight basin framves in bottom that adopt more, bottom at the basin frame directly is equipped with main magnet, at main magnet magnetic pole core is set, in magnetic pole core auxiliary magnet is set, voice coil loudspeaker voice coil be looped around main magnet, magnetic pole core and auxiliary magnet around.But such thin speaker is when the energising sounding, and the heat that magnetic circuit part produces is higher, is unfavorable for the long-term work of loud speaker, and reliability is lower.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of magnetic circuit of loudspeaker that radiating block is arranged is provided, the loud speaker of this structure is when work, and the heat energy that magnetic circuit part produces can conduct quickly, and can not affect again the performance of magnetic circuit.
According to technical scheme provided by the present invention, described have the magnetic circuit of loudspeaker of radiating block to be installed on the basin frame, comprise main magnet, magnetic pole core, auxiliary magnet and voice coil loudspeaker voice coil, main magnet is fixed on the basin frame upper base surface, be provided with magnetic pole core directly over the main magnet, be provided with auxiliary magnet directly over the magnetic pole core; Main magnet lower surface and basin frame upper base surface are combined closely, and main magnet, magnetic pole core and auxiliary magnet are combined closely; Voice coil loudspeaker voice coil is looped around around main magnet, magnetic pole core and the auxiliary magnet, it is characterized in that, the lower surface in basin frame bottom is provided with radiating block, and radiating block upper surface shape is corresponding with basin frame bottom underside shape, combines closely.
As a further improvement on the present invention, described radiating block is combined closely by mode and the basin frame of bonding or riveted.
As a further improvement on the present invention, remove on the described radiating block outside the faying face bottom the basin frame, be equipped with fin on other surfaces, to strengthen radiating effect.
As a further improvement on the present invention, described radiating block adopts the metal material that has thermal conductivity and magnetic conductivity concurrently to make; The preferred ferroalloy materials that adopts is made.
The present invention compared with prior art, advantage is: in basin frame bottom radiating block is set, so that most of heat energy that magnetic circuit of loudspeaker when work produces is transmitted to radiating block by basin frame bottom, then by radiating block heat energy is progressively distributed by outer surface, guarantee the reliability of loud speaker long-term work; Radiating block upper surface shape is corresponding with basin frame bottom underside shape, and bonded area is large, and the heat conduction efficiency is high; Radiating block is provided with fin, has further strengthened area of dissipation, has improved radiating efficiency; Radiating block adopts ferrous metal to make, and has conductivity of heat and magnetic conductivity concurrently, can play the effect of magnetic screen when conducting heat, and cost performance is also high.
Description of drawings
Fig. 1 is structure cutaway view of the present invention.
Embodiment
Below in conjunction with concrete drawings and Examples the present invention is described further.
As shown in Figure 1, the present invention is installed on the basin frame 1.The present invention mainly comprises main magnet 3, magnetic pole core 4, auxiliary magnet 5 and voice coil loudspeaker voice coil 6, and basin frame 1 bottom is airtight, and main magnet 3 is fixed on basin frame 1 upper base surface, is provided with magnetic pole core 4 directly over the main magnet 3, is provided with auxiliary magnet 5 directly over the magnetic pole core 4; Main magnet 3 lower surfaces and basin frame 1 upper base surface are combined closely, and main magnet 3, magnetic pole core 4 and auxiliary magnet 5 are combined closely; Voice coil loudspeaker voice coil 6 is looped around around main magnet 3, magnetic pole core 4 and the auxiliary magnet 5; Lower surface in basin frame 1 bottom is provided with radiating block 2, and radiating block 2 upper surface shapes are corresponding with basin frame 1 bottom underside shape, combines closely by mode and the basin frame 1 of bonding or riveted.In the embodiment shown in fig. 1, radiating block 2 upper surfaces are provided with the groove corresponding with basin frame 1 bottom shape, and combining closely in the bottom of the bottom land of groove and cell wall and basin frame 1, has increased bonded area, improved the heat conduction efficiency.
As shown in Figure 1, remove on the described radiating block 2 outside the faying face with basin frame 1 bottom, be equipped with fin 7 on other surfaces, fin 7 has further strengthened the area of dissipation of radiating block 2, has improved radiating efficiency.
Described radiating block 2 is made by the metal material with good thermal conductivity and magnetic conductivity; Iron heat transfer efficiency at normal temperatures is higher than air dielectric far away, but also has good magnetic property, can play the effect of magnetic screen when conducting heat, its price is very low in the metal material in numerous thermal conductivities preferably simultaneously, so the present invention preferably adopts ferroalloy to make radiating block 2.
Structure of the present invention is so that loud speaker when guaranteeing the structure slimming, effectively improves the heat dispersion of magnetic circuit of loudspeaker, guarantees that loud speaker can work stably in a long term.
Claims (1)
1. the magnetic circuit of loudspeaker that radiating block is arranged, comprise main magnet (3), magnetic pole core (4), auxiliary magnet (5) and voice coil loudspeaker voice coil (6), main magnet (3) is fixed on the upper base surface of basin frame (1), be provided with magnetic pole core (4) directly over the main magnet (3), be provided with auxiliary magnet (5) directly over the magnetic pole core (4); The upper base surface of main magnet (3) lower surface and basin frame (1) is combined closely, and main magnet (3), magnetic pole core (4) and auxiliary magnet (5) are combined closely; Voice coil loudspeaker voice coil (6) be looped around main magnet (3), magnetic pole core (4) and auxiliary magnet (5) around, it is characterized in that, lower surface in basin frame (1) bottom is provided with radiating block (2), the upper surface shape of radiating block (2) is corresponding with the bottom underside shape of basin frame (1), combines closely;
Described radiating block (2) is combined closely by mode and the basin frame (1) of bonding or riveted;
Remove on the described radiating block (2) outside the faying face bottom basin frame (1), be equipped with fin (7) on other surfaces;
Described radiating block (2) adopts the ferroalloy that has thermal conductivity and magnetic conductivity concurrently to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910035582 CN101697602B (en) | 2009-09-27 | 2009-09-27 | Magnetic circuit of loudspeaker with heat dissipation block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910035582 CN101697602B (en) | 2009-09-27 | 2009-09-27 | Magnetic circuit of loudspeaker with heat dissipation block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101697602A CN101697602A (en) | 2010-04-21 |
| CN101697602B true CN101697602B (en) | 2013-05-29 |
Family
ID=42142664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910035582 Active CN101697602B (en) | 2009-09-27 | 2009-09-27 | Magnetic circuit of loudspeaker with heat dissipation block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101697602B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902358B (en) * | 2015-06-08 | 2019-01-18 | 歌尔股份有限公司 | A kind of loudspeaker mould group |
| CN111294713A (en) * | 2020-03-13 | 2020-06-16 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN111405429A (en) * | 2020-03-13 | 2020-07-10 | 歌尔股份有限公司 | Sound production device and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2504865Y (en) * | 2001-11-13 | 2002-08-07 | 游文登 | Loudspeaker with improved structure |
| CN201118899Y (en) * | 2007-10-31 | 2008-09-17 | 无锡杰夫电声有限公司 | Speaker basin rack with set heat radiation hole |
-
2009
- 2009-09-27 CN CN 200910035582 patent/CN101697602B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2504865Y (en) * | 2001-11-13 | 2002-08-07 | 游文登 | Loudspeaker with improved structure |
| CN201118899Y (en) * | 2007-10-31 | 2008-09-17 | 无锡杰夫电声有限公司 | Speaker basin rack with set heat radiation hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101697602A (en) | 2010-04-21 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 214192 Xishan, Jiangsu, Beizhen Tin Tin Tin Road, No. eight, No. 228 Patentee after: WUXI JIEFU ELECTROACOUSTIC CO., LTD. Address before: 214192 Jiangsu Wuxi Xishan tin eight Wuxi Beizhen Geoff electroacoustic Co., Ltd. Patentee before: Jiefu Electroacoustic Co., Ltd., Wuxi |