CN201750539U - Magnetic circuit of thin type speaker - Google Patents
Magnetic circuit of thin type speaker Download PDFInfo
- Publication number
- CN201750539U CN201750539U CN 201020246674 CN201020246674U CN201750539U CN 201750539 U CN201750539 U CN 201750539U CN 201020246674 CN201020246674 CN 201020246674 CN 201020246674 U CN201020246674 U CN 201020246674U CN 201750539 U CN201750539 U CN 201750539U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnet
- type conductive
- magnetic yoke
- pole core
- 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
Links
Images
Abstract
The utility model relates to a magnetic circuit of a thin type speaker. According to the technical scheme provided by the utility model, the magnetic circuit of the thin type speaker comprises a basin bracket , a U-shaped magnetic-conducting yoke, a magnet and a magnetic pole core, wherein the magnet and the magnetic pole core are arranged in the U-shaped magnetic-conducting yoke, the lower surface of the magnet is closely combined with the inner surface of the bottom of the U-shaped magnetic-conducting yoke, the upper surface of the magnet is closely combined with the magnetic pole core, and a certain magnetic gap is remained between the outer walls of the magnet and the magnetic pole core and the inner wall of the U-shaped magnetic-conducting yoke. The magnetic circuit is characterized in that the center of the bottom of the basin bracket is provided with a central hole, the U-shaped magnetic-conducting yoke is arranged in the central hole, and the bottom surface of the U-shaped magnetic-conducting yoke and the bottom surface of the basin bracket are arranged on the same plane. The magnetic circuit is ingenious and reasonable in structure, can avoid overlarge heat energy caused by a voice coil cutting a magnetic force line in an alternating magnetic field, and guarantees the acoustic performance and the reliability of the speaker; the gross height of the magnetic circuit of the speaker is effectively reduced, and the magnetic flux and the BL value are not reduced.
Description
Technical field
The utility model belongs to the electroacoustic techniques field, relates to a kind of magnetic circuit structure for loudspeaker, specifically a kind of thin type speaker magnetic circuit.
Background technology
In the prior art, be applied to the loud speaker of panel TVs such as LCD, PDP, its magnetic structure generally is U type conductive magnetic yoke to be arranged on basin frame bottom and to lower convexity, the thickness of this magnetic structure is higher, is not suitable for novel ultra-thin panel TV and uses.Also have U type conductive magnetic yoke is directly removed, form open magnetic circuit, though this open magnetic structure has solved the thickness problem of higher, it is big to have occurred distortion again, and the defective that leakage field is serious badly influences the quality of product.
Therefore, need a kind of thin type speaker magnetic circuit structure of design, by changing the mutual alignment of U type conductive magnetic yoke and basin frame, reduced the overall height of magnetic circuit of loudspeaker, do not reduce simultaneously magnetic flux and BL value, can not guarantee the acoustic performance and the reliability of speaker product because of voice coil loudspeaker voice coil cutting magnetic line in alternating magnetic field causes excessive heat energy yet.
Summary of the invention
The purpose of this utility model is at above shortcomings in the prior art, provide a kind of structure ingenious rationally, the thin type speaker magnetic circuit of high magnetic flux and high BL value, this magnetic circuit of loudspeaker has effectively reduced the overall height of magnetic circuit of loudspeaker, do not reduce simultaneously magnetic flux and BL value, can not guarantee the acoustic performance and the reliability of speaker product because of voice coil loudspeaker voice coil cutting magnetic line in alternating magnetic field causes excessive heat energy yet.
The technical scheme that provides according to the utility model, described thin type speaker magnetic circuit comprises basin frame, U type conductive magnetic yoke, magnet and magnetic pole core, magnet and magnetic pole core are installed in the U type conductive magnetic yoke, magnet lower surface and U type conductive magnetic yoke bottom interior surface are combined closely, the magnet upper surface magnetic pole core of combining closely leaves certain magnetic gap between the inwall of the outer wall of magnet and magnetic pole core and U type conductive magnetic yoke; It is characterized in that: described basin frame bottom centre offers mesopore, and U type conductive magnetic yoke is installed in the mesopore, and U type conductive magnetic yoke bottom surface and basin frame bottom surface are in same plane.
As further improvement of the utility model, described U type conductive magnetic yoke bottom outer rim is provided with stopper slot to the inboard, and the geomery of stopper slot is corresponding identical with the mesopore of basin frame, and the height of stopper slot is identical with the thickness of basin frame bottom.
As further improvement of the utility model, the mesopore of described U type conductive magnetic yoke and basin frame bottom adopts interference fit to combine closely.
As further improvement of the utility model, the inner surface bottom centre of described U type conductive magnetic yoke is provided with the boss that raises up, and magnet is combined closely at the top of boss.
As further improvement of the utility model, between described magnet and the U type conductive magnetic yoke, all adopt the adhesive gummed fixing between magnet and the magnetic pole core.
The utility model compared with prior art, advantage is:
(1), structure is ingenious rationally, by changing the mutual alignment of U type conductive magnetic yoke and basin frame, U type conductive magnetic yoke is arranged in the mesopore of basin frame bottom, make U type conductive magnetic yoke bottom surface and basin frame bottom surface be in same plane simultaneously, reduced the whole height of magnetic structure effectively, and guarantee that magnetic flux and BL value can not reduce, and have strengthened the reliability of loud speaker greatly.
(2), the stopper slot of U type conductive magnetic yoke bottom outer rim setting improved U type conductive magnetic yoke and the steadiness that the mesopore of basin frame combines, and guaranteed that the integral thickness of magnetic circuit structure for loudspeaker is reasonable.
(3), the boss that is provided with on the U type conductive magnetic yoke increased the bottom level of U type conductive magnetic yoke, reduced the thickness of magnet, saved cost under the prerequisite that keeps magnetic flux density.
Description of drawings
Fig. 1 is the structural representation of the utility model preferred embodiment.
Fig. 2 is the stereochemical structure decomposing schematic representation of Fig. 1.
Fig. 3 is the perspective view of U-shaped conductive magnetic yoke among Fig. 1.
Description of reference numerals: 1-basin frame, 1a-mesopore, 2-U type conductive magnetic yoke, 2a-stopper slot, 2b-boss, 3-magnet, 4-magnetic pole core.
Embodiment
Below in conjunction with concrete drawings and Examples the utility model is further described.
As shown in the figure, the thin type speaker magnetic circuit among the embodiment mainly is made up of basin frame 1, U type conductive magnetic yoke 2, magnet 3 and magnetic pole core 4.
As Fig. 1～shown in Figure 3, described basin frame 1 bottom centre offers mesopore 1a, U type conductive magnetic yoke 2 is installed in the mesopore 1a, and U type conductive magnetic yoke 2 adopts interference fit to combine closely with the mesopore 1a of basin frame 1 bottom, and U type conductive magnetic yoke 2 bottom surfaces and basin frame 1 bottom surface are in same plane.Described magnet 3 and magnetic pole core 4 are installed in the U type conductive magnetic yoke 2, magnet 3 lower surfaces and U type conductive magnetic yoke 2 bottom interior surfaces are combined closely, the magnet 3 upper surfaces magnetic pole core 4 of combining closely is between described magnet 3 and the U type conductive magnetic yoke 2, all adopt the adhesive gummed fixing between magnet 3 and the magnetic pole core 4; Leave certain magnetic gap between the inwall of the outer wall of described magnet 3 and magnetic pole core 4 and U type conductive magnetic yoke 2.
As Fig. 1, shown in Figure 3, the section of described U type conductive magnetic yoke 2 is the U type, its bottom is airtight, U type conductive magnetic yoke 2 bottom outer rims are provided with stopper slot 2a to the inboard, the mesopore 1a edge of the geomery of stopper slot 2a and basin frame 1 matches, thereby has improved the steadiness that U type conductive magnetic yoke 2 combines with the mesopore 1a of basin frame 1; The height of described stopper slot 2a is identical with the thickness of basin frame 1 bottom, thereby makes U type conductive magnetic yoke 2 bottom surfaces and basin frame 1 bottom surface be in same plane, has guaranteed that the integral thickness of magnetic circuit structure for loudspeaker is reasonable.
As Fig. 1～shown in Figure 3, the inner surface bottom centre of described U type conductive magnetic yoke 2 is provided with the boss 2b that raises up, and magnet 3 is combined closely at the top of boss 2b.Because magnet 3 price comparison height, the utility model has increased the bottom level of U type conductive magnetic yoke 2 by boss 2b is set, and has reduced the thickness of magnet, has saved cost under the prerequisite that keeps magnetic flux density.
Claims (5)
1. thin type speaker magnetic circuit, comprise basin frame (1), U type conductive magnetic yoke (2), magnet (3) and magnetic pole core (4), magnet (3) and magnetic pole core (4) are installed in the U type conductive magnetic yoke (2), magnet (3) lower surface and U type conductive magnetic yoke (2) bottom interior surface are combined closely, magnet (3) the upper surface magnetic pole core (4) of combining closely leaves certain magnetic gap between the outer wall of magnet (3) and magnetic pole core (4) and the inwall of U type conductive magnetic yoke (2); It is characterized in that: described basin frame (1) bottom centre offers mesopore (1a), and U type conductive magnetic yoke (2) is installed in the mesopore (1a), and U type conductive magnetic yoke (2) bottom surface and basin frame (1) bottom surface are in same plane.
2. thin type speaker magnetic circuit as claimed in claim 1, its feature also is: described U type conductive magnetic yoke (2) bottom outer rim is provided with stopper slot (2a) to the inboard, the geomery of stopper slot (2a) is corresponding identical with the mesopore (1a) of basin frame (1), and the height of stopper slot (2a) is identical with the thickness of basin frame (1) bottom.
3. thin type speaker magnetic circuit as claimed in claim 1, its feature also is: described U type conductive magnetic yoke (2) adopts interference fit to combine closely with the mesopore (1a) of basin frame (1) bottom.
4. thin type speaker magnetic circuit as claimed in claim 1, its feature also is: the inner surface bottom centre of described U type conductive magnetic yoke (2) is provided with the boss (2b) that raises up, and magnet (3) is combined closely at the top of boss (2b).
5. thin type speaker magnetic circuit as claimed in claim 1, its feature also is: between described magnet (3) and the U type conductive magnetic yoke (2), all adopt the adhesive gummed fixing between magnet (3) and the magnetic pole core (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020246674 CN201750539U (en) | 2010-06-24 | 2010-06-24 | Magnetic circuit of thin type speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020246674 CN201750539U (en) | 2010-06-24 | 2010-06-24 | Magnetic circuit of thin type speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201750539U true CN201750539U (en) | 2011-02-16 |
Family
ID=43585213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020246674 Expired - Fee Related CN201750539U (en) | 2010-06-24 | 2010-06-24 | Magnetic circuit of thin type speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201750539U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867857A (en) * | 2010-06-24 | 2010-10-20 | 无锡杰夫电声有限公司 | Thin type speaker magnetic circuit |
| CN112511958A (en) * | 2020-12-18 | 2021-03-16 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound producing device |
-
2010
- 2010-06-24 CN CN 201020246674 patent/CN201750539U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867857A (en) * | 2010-06-24 | 2010-10-20 | 无锡杰夫电声有限公司 | Thin type speaker magnetic circuit |
| CN112511958A (en) * | 2020-12-18 | 2021-03-16 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound producing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103037283B (en) | Thin double-cone phase inversion type loudspeaker box | |
| CN203015107U (en) | Novel full-frequency loudspeaker | |
| CN102638751B (en) | Thin type speaker with inverted positioning support chip | |
| CN202587358U (en) | Thin type speaker with inverted positioning support chip | |
| CN102291651B (en) | Dual-cone thin loudspeaker with step structure | |
| CN201616902U (en) | Dual-drive paper holder flat panel speaker | |
| CN203015108U (en) | Novel loudspeaker | |
| CN201750539U (en) | Magnetic circuit of thin type speaker | |
| CN204518057U (en) | The diaphragm structure of panel speaker | |
| CN201750540U (en) | Woofer | |
| CN101867857A (en) | Thin type speaker magnetic circuit | |
| CN101931849A (en) | Thin speaker with taper location support chip | |
| CN202663536U (en) | Built-in television full frequency speaker | |
| CN201839431U (en) | Thin type speaker with tapered positioning support chip | |
| CN201571197U (en) | Thin electrodynamic loudspeaker | |
| CN101511048A (en) | Electro-acoustic converter with novel vibrating system and manufacturing method for vibrating system | |
| CN204291368U (en) | Microspeaker | |
| CN201054783Y (en) | Ultra-thin flat gamut speaker | |
| CN201623849U (en) | Platform loudspeaker | |
| CN103747400A (en) | Thin moving-coil loudspeaker | |
| CN202713594U (en) | Loudspeaker capable of being narrowing | |
| CN202957958U (en) | Dual-cone phase inversion type thin speaker box | |
| CN203015098U (en) | Magnetic circuit structure of loudspeaker | |
| CN202385196U (en) | Ultrathin mega bass sound box used in LED liquid crystal television | |
| CN201758446U (en) | Thin loudspeaker based on multi-step magnetic conductive yoke |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 eight Wuxi, Beizhen, Xishan District, Jiangsu Patentee before: Jiefu Electroacoustic Co., Ltd., Wuxi |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20190624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |