CN201204689Y - Magnetic circuit structure for loudspeaker - Google Patents
Magnetic circuit structure for loudspeaker Download PDFInfo
- Publication number
- CN201204689Y CN201204689Y CNU200820092418XU CN200820092418U CN201204689Y CN 201204689 Y CN201204689 Y CN 201204689Y CN U200820092418X U CNU200820092418X U CN U200820092418XU CN 200820092418 U CN200820092418 U CN 200820092418U CN 201204689 Y CN201204689 Y CN 201204689Y
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- magnetic
- hole
- loudspeaker
- circuit structure
- board
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Abstract
A loudspeaker magnetic structure comprises an upper magnetic conduction plate with a through hole in the center, a first annular magnet arranged below the upper magnetic conduction plate and having a through hole, a lower magnetic conduction plate with a center column, a second annular magnet arranged below the lower magnetic conduction plate and having a through hole, a damp cotton in the through hole of the second annular magnet, and an antimagnetic cover arranged outside. The center column of the lower magnetic conduction plate goes through the first annular magnet and the upper magnetic conduction plate; at least a through hole is arranged near the center column on the lower magnetic conduction plate.
Description
Technical field
The utility model relates to a kind of magnetic structure of loud speaker, relates in particular to a kind of middle and high frequency ball and rises the sound magnetic circuit structure for loudspeaker.
Background technology
The modern seldom has leisure time because work is busy.Music appreciating or look at that perhaps video disc is a kind of comparatively general leisure mode.The quality that the quality influence people of loud speaker view and admire and enjoy, therefore best in quality, cheap loud speaker is that people pursue.
The cardinal principle of loud speaker is: combine with oscillating component with a magnetic circuit device, drive oscillating component by input alternation tone currents cutting magnetic line and move forward and backward, produce sound by compression or expansion air dielectric.Divide from frequency, loud speaker can simply be divided into high, medium and low sound, in middle and high sound loud speaker, because the requirement of indexs such as size, directive property exists ball top and two kinds of structures of taper.
On the technical performance of loudspeaker, all engineers put forth effort on the several basic demands that improve middle and high sound loud speaker: sensitivity, the distortion factor and effective frequency range (extension of hyper band and the extension of Mid Frequency).At how widening effective frequency range, the way that people solve wherein comparatively typically is exactly to adopt perforate on the conducting magnetic column by multiple, and the cavity that is equipped with the back again and increases a constant volume reaches expands the purpose that Mid Frequency extends.The industry endosphere pushes up middle and high sound loud speaker and adopts two kinds of magnetic structure modes mostly at present, first kind is the external magnetic circuit structure, as Fig. 1 and Fig. 2, this outer-magnet speaker magnetic structure comprises that one is arranged on the upper conduction magnetic board 11 that the top and center have through hole, first ringshaped magnet 12 that is arranged on the top and has through hole, has magnetic conductive board 13 under the T shape of newel 132 in the middle of one, second ringshaped magnet 14 that is arranged on the below and has through hole, a damping cotton 15, and an Antimagnetic hood 16.The newel center of this time magnetic conductive board 13 offers a through hole.The newel of this time magnetic conductive board 13 passes this first ringshaped magnet 12 and this upper conduction magnetic board 11, and this damping cotton 15 is arranged in the through hole of second ringshaped magnet 14.This Antimagnetic hood 16 is arranged on outermost layer.Second kind is the internal magnetic type magnetic line structure, as Fig. 3 and Fig. 4, this internal magnetic type magnetic line structure comprises first ringshaped magnet 21 that is arranged on the top and has through hole, a upper conduction magnetic board 22, second ringshaped magnet 23 that is arranged on the below and has through hole, a centre has 24, one conduits 25 of U-shaped magnetic conductive board of a through hole, and a back cavity 26.This upper conduction magnetic board 22 and this second ringshaped magnet 23 are arranged in this U-shaped magnetic conductive board 24, and these conduit 25 1 ends are located in these U-shaped magnetic conductive board 24 through holes.After adopting the magnetic structure of the above two kinds of loud speakers of loud speaker test system and test, its frequency response curve sees also Fig. 5.As can be known from Fig. 5, the medium and low frequency lower limit of the magnetic structure of these two kinds of loud speakers is only to 1300 hertz, and it is limited that it widens frequency range downwards.Therefore, be necessary to design a kind of magnetic circuit structure for loudspeaker that can widen effective frequency range.
The utility model content
The purpose of this utility model is to provide a kind of magnetic circuit structure for loudspeaker that can widen effective frequency range, and the purpose of this utility model reaches by following measure:
A kind of magnetic circuit structure for loudspeaker, it comprises that a center has the upper conduction magnetic board of through hole, first ringshaped magnet that is arranged on described upper conduction magnetic board below and has through hole, following magnetic conductive board with newel, second ringshaped magnet that is arranged on the described below of magnetic conductive board down and has through hole, the interior damping cotton of through hole that is housed in described second ringshaped magnet, reach one and be arranged on outermost Antimagnetic hood, the described newel of magnetic conductive board down passes described first ringshaped magnet and described upper conduction magnetic board, and close described newel edge offers at least one through hole on the described magnetic conductive board down.
Described through hole be distributed on the same circumference and size identical.
Described shape of through holes is circular or square.
The quantity of described through hole is four.
The quantity of described through hole is eight.
A kind of magnetic circuit structure for loudspeaker, it comprises that is gone up a damping cotton, one is arranged on the described upper conduction magnetic board of going up damping cotton below, a magnet that is arranged on described upper conduction magnetic board below, a U-shaped magnetic conductive board of accommodating described upper conduction magnetic board and described magnet, the following damping cotton that described U-shaped magnetic conductive board below is set, a back cavity of accommodating described U-shaped magnetic conductive board and described damping cotton, the bottom margin of described U-shaped magnetic conductive board offers at least one through hole.
Described through hole be distributed on the same circumference of described U-shaped magnetic conductive board bottom margin and size identical.
Described shape of through holes is circular or square.
The quantity of described through hole is four.
The quantity of described through hole is eight.
With respect to prior art, the utility model magnetic circuit structure for loudspeaker is by offering a plurality of through holes near described newel edge on described magnetic conductive board down, offer a plurality of through holes by bottom margin at described U-shaped magnetic conductive board, not only enlarged the Mid Frequency frequency range of magnetic circuit structure for loudspeaker, and, because number of openings is more, also increased the thermal dissipating path of magnetic loop.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the exploded view of existing external magnetic circuit structure.
Fig. 2 is the cutaway view after assembling of existing external magnetic circuit structure.
Fig. 3 is the exploded view of existing internal magnetic type magnetic line structure.
Fig. 4 is the cutaway view when assembling of existing internal magnetic type magnetic line structure.
Fig. 5 is the frequency response curve figure of existing inside and outside magnetic-type magnetic structure.
Fig. 6 is the exploded view of the utility model external magnetic circuit structure.
Fig. 7 is the cutaway view after assembling of the utility model external magnetic circuit structure.
Fig. 8 is the exploded view of the utility model internal magnetic type magnetic line structure.
Fig. 9 is the assembly drawing of the utility model internal magnetic type magnetic line structure.
Figure 10 is the cutaway view of Fig. 9.
Figure 11 is the frequency response curve figure of the inside and outside magnetic-type magnetic structure of the utility model.
Embodiment
Please refer to Fig. 6 and Fig. 7, this outer-magnet speaker magnetic structure comprises that one is arranged on the upper conduction magnetic board 31 that the top and center have through hole, first ringshaped magnet 32 that is arranged on the top and has through hole, a cross section is the following magnetic conductive board 33 of T shape, second ringshaped magnet 34 that is arranged on the below and has through hole, a damping cotton 35, and an Antimagnetic hood 36.The newel 331 of this time magnetic conductive board 33 passes this first ringshaped magnet 32 and this upper conduction magnetic board 31, and this damping cotton 35 is arranged in the through hole of second ringshaped magnet 34.This Antimagnetic hood 36 is arranged on outermost layer to cover this upper conduction magnetic board 31, first ringshaped magnet 32, following magnetic conductive board 33, second ringshaped magnet 34 and damping cotton 35.Newel 331 edges of this time magnetic conductive board 33 are even eight through holes 332 that size is identical that distribute on same circumference, and this through hole 332 is interconnected with ccontaining voice coil loudspeaker voice coil (not shown) with the through hole of this upper conduction magnetic board 32 and the through hole of this first ringshaped magnet 32.Be appreciated that the through hole 332 on this time magnetic conductive board 33 can be circle, square or other shapes, the quantity of this through hole 332 also can be one, two, four, six or ten etc.
Please refer to Fig. 8, Fig. 9 and Figure 10, this internal magnetic loudspeaker magnetic structure comprises 45, one back cavities 46 of 44, one following damping cottons of 43, one U-shaped magnetic conductive boards of 42, blocks of magnet of 41, one upper conduction magnetic boards of last damping cotton that are arranged on the top.The bottom margin of this U-shaped magnetic conductive board 44 offers eight through holes 442 that size is identical.This upper conduction magnetic board 42 and this magnet 43 are arranged on this U-shaped magnetic conductive board 44 inside, and damping cotton 41 is arranged on this upper conduction magnetic board 42 on this.This U-shaped magnetic conductive board 44 all is arranged in this back cavity 46 with this time damping cotton 45, and this U-shaped magnetic conductive board 44 is positioned at the top of this time damping cotton 45.This upper conduction magnetic board 42 and this magnet 43 have certain interval with the inwall of this this U-shaped magnetic conductive board 44 respectively, and this gap is communicated with ccontaining voice coil loudspeaker voice coil (not shown) with this through hole 442.Be appreciated that the through hole 442 on this U-shaped magnetic conductive board 44 can be circle, square or other shapes, the quantity of this through hole 442 also can be one, two, four, six or ten etc.
After adopting the magnetic structure of the above two kinds of loud speakers of loud speaker test macro (Loudspeaker Measurement System:LMS) test, its frequency response curve sees also Figure 11.As can be known from Fig. 11, the medium and low frequency lower limit of the magnetic structure of these two kinds of loud speakers has extended to 700 hertz (Hz), and it has widened the frequency range of Mid Frequency downwards.And, because number of openings is more, also increased the thermal dissipating path of magnetic loop.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.
Claims (10)
1. magnetic circuit structure for loudspeaker, it comprises that a center has the upper conduction magnetic board of through hole, first ringshaped magnet that is arranged on described upper conduction magnetic board below and has through hole, following magnetic conductive board with newel, second ringshaped magnet that is arranged on the described below of magnetic conductive board down and has through hole, the interior damping cotton of through hole that is housed in described second ringshaped magnet, reach one and be arranged on outermost Antimagnetic hood, the described newel of magnetic conductive board down passes described first ringshaped magnet and described upper conduction magnetic board, it is characterized in that: close described newel edge offers at least one through hole on the described magnetic conductive board down.
2. magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that: described through hole be distributed on the same circumference and size identical.
3. magnetic circuit structure for loudspeaker as claimed in claim 2 is characterized in that: described shape of through holes is for circular or square.
4. magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that: the quantity of described through hole is four.
5. magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that: the quantity of described through hole is eight.
6. magnetic circuit structure for loudspeaker, it comprises that is gone up a damping cotton, one is arranged on the described upper conduction magnetic board of going up damping cotton below, a magnet that is arranged on described upper conduction magnetic board below, a U-shaped magnetic conductive board of accommodating described upper conduction magnetic board and described magnet, the following damping cotton that described U-shaped magnetic conductive board below is set, a back cavity of accommodating described U-shaped magnetic conductive board and described damping cotton, it is characterized in that: the bottom margin of described U-shaped magnetic conductive board offers at least one through hole.
7. magnetic circuit structure for loudspeaker as claimed in claim 6 is characterized in that: described through hole be distributed on the same circumference of described U-shaped magnetic conductive board bottom margin and size identical.
8. magnetic circuit structure for loudspeaker as claimed in claim 7 is characterized in that: described shape of through holes is for circular or square.
9. magnetic circuit structure for loudspeaker as claimed in claim 6 is characterized in that: the quantity of described through hole is four.
10. magnetic circuit structure for loudspeaker as claimed in claim 6 is characterized in that: the quantity of described through hole is eight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820092418XU CN201204689Y (en) | 2008-02-29 | 2008-02-29 | Magnetic circuit structure for loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820092418XU CN201204689Y (en) | 2008-02-29 | 2008-02-29 | Magnetic circuit structure for loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204689Y true CN201204689Y (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820092418XU Expired - Fee Related CN201204689Y (en) | 2008-02-29 | 2008-02-29 | Magnetic circuit structure for loudspeaker |
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| CN (1) | CN201204689Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521842B (en) * | 2008-02-29 | 2013-02-13 | 唐华西 | Speaker magnetic loop structure |
| CN103093919A (en) * | 2011-11-04 | 2013-05-08 | 施俊兆 | Magnetic assembly |
| CN107306377A (en) * | 2016-04-25 | 2017-10-31 | 江苏普多泽安全技术有限公司 | A kind of magnetic circuit system of high efficiency and heat radiation and the loudspeaker comprising this magnetic circuit system |
| CN108632719A (en) * | 2018-04-28 | 2018-10-09 | 歌尔股份有限公司 | Lower magnetic conductive board and Microspeaker for Microspeaker |
| CN110198509A (en) * | 2018-02-26 | 2019-09-03 | 歌尔股份有限公司 | Acoustical generator and electronic product |
| CN110198510A (en) * | 2018-02-26 | 2019-09-03 | 歌尔股份有限公司 | Acoustical generator |
-
2008
- 2008-02-29 CN CNU200820092418XU patent/CN201204689Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521842B (en) * | 2008-02-29 | 2013-02-13 | 唐华西 | Speaker magnetic loop structure |
| CN103093919A (en) * | 2011-11-04 | 2013-05-08 | 施俊兆 | Magnetic assembly |
| CN107306377A (en) * | 2016-04-25 | 2017-10-31 | 江苏普多泽安全技术有限公司 | A kind of magnetic circuit system of high efficiency and heat radiation and the loudspeaker comprising this magnetic circuit system |
| CN107306377B (en) * | 2016-04-25 | 2019-12-03 | 江苏云界安全技术有限公司 | A kind of magnetic circuit system of high efficiency and heat radiation and loudspeaker comprising this magnetic circuit system |
| CN110198509A (en) * | 2018-02-26 | 2019-09-03 | 歌尔股份有限公司 | Acoustical generator and electronic product |
| CN110198510A (en) * | 2018-02-26 | 2019-09-03 | 歌尔股份有限公司 | Acoustical generator |
| CN110198509B (en) * | 2018-02-26 | 2022-04-12 | 歌尔股份有限公司 | Acoustic generator and electronic product |
| CN110198510B (en) * | 2018-02-26 | 2022-04-15 | 歌尔股份有限公司 | Sound generator |
| CN108632719A (en) * | 2018-04-28 | 2018-10-09 | 歌尔股份有限公司 | Lower magnetic conductive board and Microspeaker for Microspeaker |
| CN108632719B (en) * | 2018-04-28 | 2021-05-18 | 歌尔股份有限公司 | Lower magnetic conductive plate for micro loudspeaker and micro 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: 20090304 Termination date: 20120229 |