CN101909234B - Composite magnetic circuit loudspeaker - Google Patents
Composite magnetic circuit loudspeaker Download PDFInfo
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- CN101909234B CN101909234B CN 201010247094 CN201010247094A CN101909234B CN 101909234 B CN101909234 B CN 101909234B CN 201010247094 CN201010247094 CN 201010247094 CN 201010247094 A CN201010247094 A CN 201010247094A CN 101909234 B CN101909234 B CN 101909234B
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- annular
- voice coil
- magnetic
- loudspeaker
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Abstract
The invention discloses a composite magnetic circuit loudspeaker which comprises a frame and an iron core bracket, wherein the iron core bracket comprises a center platform and an annular platform; the bottom of the frame is fixed on the annular platform of the iron core bracket; the center platform of the iron core bracket is provided with an inner magnetic assembly; the annular platform is provided with an annular outer magnetic assembly; and a speech coil is inserted into the annular space between the inner magnetic assembly and the outer magnetic assembly. Compared with the loudspeaker of an outer magnetic structure, the loudspeaker in a composite magnetic structure greatly reduces the volume of the magnetic steel and lowers the production cost. Compared with the loudspeaker of an inner magnetic structure, the invention has the advantage of higher sensitivity. The magnetic density of the composite magnetic circuit loudspeaker is increased by about 60% compared with that of the magnetic steel with the same volume, so that the working efficiency and the power of the loudspeaker are higher.
Description
Technical field
The present invention relates to a kind of loud speaker, especially relate to a kind of composite magnetic circuit loudspeaker.
Background technology
Loud speaker is commonly called as loudspeaker, and its effect is to convert audio electrical signal to acoustical signal and the sound of air medium radiation towards periphery.Loudspeaker are widely used in daily life, especially will use loudspeaker in sound box system, and are in places such as some large-scale stages, exhibition are on-the-spot, higher to the power requirement of audio amplifier.The watt level of loudspeaker directly has influence on the watt level of audio amplifier, and the power of audio amplifier is done larger and larger, so that loudspeaker are also done is increasing.Magnet steel in loudspeaker is a crucial factor that determines the loudspeaker watt level.Traditional loudspeaker are divided into outer magnetic structure and inner magnetic structure, and outer magnetic structure comprises T iron, magnet steel and pressing plate as shown in Figure 1, and magnet steel is sandwiched between T iron and pressing plate, and voice coil loudspeaker voice coil is inserted in gap between pressing plate and T iron.Due to outside magnet steel is arranged on, the external diameter of magnet steel causes more greatly the volume ratio of magnet steel larger, so cost is higher.Although the inner magnetic structure volume is smaller, remolding sensitivity is lower.
Summary of the invention
Technical problem to be solved by this invention is to provide the composite magnetic circuit loudspeaker that a kind of magnet steel volume is little and sensitivity is higher.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of composite magnetic circuit loudspeaker, comprise basin frame and iron core bracket, described support unshakable in one's determination comprises zone center and annular table, described basin frame bottom is fixed on the annular table of described iron core bracket, be provided with interior magnetic assembly on the zone center of described iron core bracket, be provided with the outer magnetic assembly of annular on described annular table, insert voice coil loudspeaker voice coil in the annular gap between described interior magnetic assembly and described outer magnetic assembly.
Described interior magnetic assembly comprises upper core, center magnet steel and lower core, and described center magnet steel is arranged between upper core and lower core, and outer magnetic assembly comprises train wheel bridge, annular magnetic steel and lower plate, and described annular magnetic steel is arranged between train wheel bridge and lower plate.
Form the first magnetic gap between described upper core and described train wheel bridge, described voice coil loudspeaker voice coil comprises skeleton and the first coil on the skeleton, and described the first coil is arranged in described the first magnetic gap.
Form the second magnetic gap between described lower core and described lower plate, described voice coil loudspeaker voice coil also comprises the second coil on the skeleton, described the second coil be positioned at the first coil below, keep at a certain distance away between the first coil and the second coil, described the first coil laterally is wrapped on skeleton in a clockwise direction, described the second coil is counterclockwise laterally to be wrapped on skeleton, described the first coil is electrically connected to mutually with the second coil, and described the second coil is arranged in described the second magnetic gap.
Described annular magnetic steel is comprised of a plurality of annular button magnet steel.A plurality of annular button magnet steel are compared single annular magnet, and processing technology is simple, and production cost is lower.
Described upper core is the N utmost point, and lower core is the S utmost point, and described train wheel bridge is the S utmost point, and described lower plate is the N utmost point.
Described lower plate comprises chassis and annular boss, and described annular magnetic steel is between described annular boss and described train wheel bridge, and described lower core is arranged on the chassis, and described chassis is fixed on zone center.
Also comprise playing ripple, cone and dust cap, described bullet ripple is fixed on described voice coil loudspeaker voice coil, and described cone is fixed on described voice coil loudspeaker voice coil, and described dust cap is fixed on described cone.
Be provided with binding post on described basin frame, described voice coil loudspeaker voice coil is connected with described binding post by lead-out wire.
Described cone outward flange is fixed on the basin frame by press strip.
Compared with prior art, the invention has the advantages that the loudspeaker of composite magnetic circuit structure, compare the loudspeaker of outer magnetic structure, reduced significantly the volume of magnet steel, reduced production cost, compare the loudspeaker of inner magnetic structure, sensitivity is higher.The magnetic density that the present invention compares the equal volume magnet steel has increased by 60% left and right, and the operating efficiency of the loudspeaker that make is higher, and is more powerful.
Form the magnetic circuit of a circulation between interior magnetic and outer magnetic, magnetic line of force direction between lower plate and lower core and the magnetic line of force opposite direction between train wheel bridge and upper core, the first coil is opposite with the coiling of the second coil, its logical tone currents direction of institute is just opposite, according to the Left Hand Rule gained, the force direction that the first coil and the second coil cutting magnetic line produce is identical, and therefore acting on voice coil loudspeaker voice coil is making a concerted effort of two active forces.Owing to having utilized expeditiously magnetic energy, composite magnetic circuit produces more powerful active force to whole voice coil loudspeaker voice coil, makes the operating efficiency of loudspeaker higher.
Description of drawings
Fig. 1 is horn structure figure of the prior art;
Fig. 2 is the structure explosive view of the embodiment of the present invention one;
Fig. 3 is the structure cutaway view of the embodiment of the present invention one;
Fig. 4 is the local structural graph of the embodiment of the present invention two.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Embodiment one: a kind of composite magnetic circuit loudspeaker, comprise basin frame 1 and iron core bracket 2, support 2 unshakable in one's determination comprises zone center 21 and annular table 22, basin frame 1 bottom is fixed on the annular table 22 of iron core bracket 2, be provided with interior magnetic assembly on the zone center 21 of iron core bracket 2, be provided with the outer magnetic assembly of annular on annular table 22, insert voice coil loudspeaker voice coil 3 in the annular gap between interior magnetic assembly and outer magnetic assembly.Iron core bracket 2 is fixed on basin frame 1 by screw 10.
Interior magnetic assembly comprises upper core 4, center magnet steel 5 and lower core 6, and center magnet steel 5 is arranged between upper core 4 and lower core 6, and outer magnetic assembly comprises train wheel bridge 7, annular magnetic steel 8 and lower plate 9, and annular magnetic steel 8 is arranged between train wheel bridge 7 and lower plate 9.Annular magnetic steel 8 is comprised of a plurality of annular button magnet steel, can be also single annular magnetic steel.
Form the first magnetic gap between upper core 4 and train wheel bridge 7, double wrap line voice coil loudspeaker voice coil 3 comprises that skeleton 31, the first coil 32 and the second coil 33, the first coils 32 on skeleton are arranged in the first magnetic gap.Form the second magnetic gap between lower core 6 and lower plate 9, the second coil 33 be positioned at the first coil 32 below, keep at a certain distance away between the first coil 32 and the second coil 33, the first coil 32 laterally is wrapped on skeleton 31 in a clockwise direction, the second coil 33 is counterclockwise laterally to be wrapped on skeleton 31, the first coil 32 is electrically connected to mutually with the second coil 33, and the second coil 33 is arranged in the second magnetic gap.Loud speaker in embodiment one is two magnetic gap, and the voice coil loudspeaker voice coil that matches with it is double wrap line voice coil loudspeaker voice coil.
Also comprise playing ripple 11, cone 12 and dust cap 13, play ripple 11 and be fixed on double wrap line voice coil loudspeaker voice coil 3, cone 12 is fixed on double wrap line voice coil loudspeaker voice coil 3, and dust cap 13 is fixed on cone 12.
Be provided with binding post 14 on basin frame 1, voice coil loudspeaker voice coil 3 is connected with binding post 14 by lead-out wire 15.
Cone 12 outward flanges are fixed on basin frame 1 by press strip 16.
Embodiment two: as shown in Figure 4, other parts are identical with embodiment one, and its difference is that loud speaker is single magnetic gap, and the voice coil loudspeaker voice coil that matches with it is single coiling voice coil loudspeaker voice coil.Form magnetic gap between upper core 4 and train wheel bridge 7, voice coil loudspeaker voice coil 3 comprises skeleton 31 and the coil 34 on the skeleton 31, and coil 34 is arranged in magnetic gap.Lower plate 9 comprises chassis 91 and annular boss 92, and annular magnetic steel 8 is between annular boss 92 and train wheel bridge 7, and lower core 6 is arranged on chassis 91, and chassis 91 is fixed on zone center 21.
Claims (9)
1. composite magnetic circuit loudspeaker, comprise basin frame and iron core bracket, described iron core bracket comprises zone center and annular table, described basin frame bottom is fixed on the annular table of described iron core bracket, it is characterized in that being provided with interior magnetic assembly on the zone center of described iron core bracket, be provided with the outer magnetic assembly of annular on described annular table, insert voice coil loudspeaker voice coil in annular gap between described interior magnetic assembly and described outer magnetic assembly, described interior magnetic assembly comprises upper core, center magnet steel and lower core, described center magnet steel is arranged between upper core and lower core, outer magnetic assembly comprises train wheel bridge, annular magnetic steel and lower plate, described annular magnetic steel is arranged between train wheel bridge and lower plate.
2. a kind of composite magnetic circuit loudspeaker according to claim 1, it is characterized in that forming between described upper core and described train wheel bridge the first magnetic gap, described voice coil loudspeaker voice coil comprises skeleton and the first coil on the skeleton, and described the first coil is arranged in described the first magnetic gap.
3. a kind of composite magnetic circuit loudspeaker according to claim 2, it is characterized in that forming between described lower core and described lower plate the second magnetic gap, described voice coil loudspeaker voice coil also comprises the second coil on the skeleton, described the second coil be positioned at the first coil below, keep at a certain distance away between the first coil and the second coil, described the first coil laterally is wrapped on skeleton in a clockwise direction, described the second coil is counterclockwise laterally to be wrapped on skeleton, described the first coil is electrically connected to mutually with the second coil, described the second coil is arranged in described the second magnetic gap.
4. a kind of composite magnetic circuit loudspeaker according to claim 1, is characterized in that described annular magnetic steel is comprised of a plurality of annular button magnet steel.
5. a kind of composite magnetic circuit loudspeaker according to claim 3, is characterized in that described upper core is the N utmost point, and lower core is the S utmost point, and described train wheel bridge is the S utmost point, and described lower plate is the N utmost point.
6. a kind of composite magnetic circuit loudspeaker according to claim 2, it is characterized in that described lower plate comprises chassis and annular boss, described annular magnetic steel is between described annular boss and described train wheel bridge, described lower core is arranged on the chassis, and described chassis is fixed on zone center.
7. a kind of composite magnetic circuit loudspeaker according to claim 5, characterized by further comprising and play ripple, cone and dust cap, described bullet ripple is fixed on described voice coil loudspeaker voice coil, and described cone is fixed on described voice coil loudspeaker voice coil, and described dust cap is fixed on described cone.
8. a kind of composite magnetic circuit loudspeaker according to claim 7, is characterized in that being provided with binding post on described basin frame, and described voice coil loudspeaker voice coil is connected with described binding post by lead-out wire.
9. a kind of composite magnetic circuit loudspeaker according to claim 8, is characterized in that described cone outward flange is fixed on the basin frame by press strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010247094 CN101909234B (en) | 2010-08-04 | 2010-08-04 | Composite magnetic circuit loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010247094 CN101909234B (en) | 2010-08-04 | 2010-08-04 | Composite magnetic circuit loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101909234A CN101909234A (en) | 2010-12-08 |
| CN101909234B true CN101909234B (en) | 2013-06-12 |
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ID=43264525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010247094 Expired - Fee Related CN101909234B (en) | 2010-08-04 | 2010-08-04 | Composite magnetic circuit loudspeaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN101909234B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019134162A1 (en) | 2018-01-08 | 2019-07-11 | 深圳市韶音科技有限公司 | Bone conduction loudspeaker |
| CN114222228A (en) * | 2021-09-08 | 2022-03-22 | 深圳市万红苹果电子有限公司 | Loudspeaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2907151Y (en) * | 2006-05-30 | 2007-05-30 | 深圳东原电子有限公司 | Loudspeaker |
| CN201733435U (en) * | 2010-08-04 | 2011-02-02 | 宁波音王集团有限公司 | Composite magnetic speaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040105568A1 (en) * | 2002-12-03 | 2004-06-03 | Po-Hsiung Lee | Speaker with enhanced magnetic flux |
-
2010
- 2010-08-04 CN CN 201010247094 patent/CN101909234B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2907151Y (en) * | 2006-05-30 | 2007-05-30 | 深圳东原电子有限公司 | Loudspeaker |
| CN201733435U (en) * | 2010-08-04 | 2011-02-02 | 宁波音王集团有限公司 | Composite magnetic speaker |
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| Publication number | Publication date |
|---|---|
| CN101909234A (en) | 2010-12-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO SOUNDKING ELECTRONIC CO., LTD. Free format text: FORMER OWNER: NINGBO SOUNDKING GROUP CO., LTD. Effective date: 20121109 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121109 Address after: 315104 Yinzhou investment and entrepreneurship center, Ningbo, road, No. 818 Applicant after: Ningbo Soundking Electronic Co., Ltd. Address before: 315104 Yinzhou investment and entrepreneurship center, Ningbo, road, No. 818 Applicant before: Ningbo Soundking Group Co., Ltd. |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20160804 |
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| CF01 | Termination of patent right due to non-payment of annual fee |