CN101909238B - Process method for loudspeaker with compound magnetic circuit - Google Patents
Process method for loudspeaker with compound magnetic circuit Download PDFInfo
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- CN101909238B CN101909238B CN 201010247103 CN201010247103A CN101909238B CN 101909238 B CN101909238 B CN 101909238B CN 201010247103 CN201010247103 CN 201010247103 CN 201010247103 A CN201010247103 A CN 201010247103A CN 101909238 B CN101909238 B CN 101909238B
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- loudspeaker
- iron core
- magnetic assembly
- magnetic circuit
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Abstract
The invention relates to a process method for a loudspeaker with a compound magnetic circuit, which comprises the following steps of: fixing a plurality of button-shaped magnetic steels between a lower clamping plate and an upper clamping plate in a ring shape to form an outer magnetic component, charging magnetism for the outer magnetic component in a magnetizing apparatus so as to lead the upper clamping plate to present an S-pole and the lower clamping plate to present a N-pole, clamping a center magnetic steel with an upper iron core and a lower iron core to form an inner magnetic component, charging magnetism for the inner magnetic component in the magnetizing apparatus so as to lead the upper iron core to present an S-pole and the lower iron core to present a N-pole, inserting a setting gauge on a center table of an iron core bracket, placing the inner magnetic component in the setting gauge to fix the lower iron core on the center table of the iron core bracket, and inserting a double-winding voice coil into a ring gap between the inner magnetic component and the outer magnetic component. Compared with a loudspeaker with an external magnetic structure, the loudspeaker with the compound magnetic circuit has the advantages that the volume of magnetic steels is greatly reduced and the production cost is reduced. Compared with a loudspeaker with an internal magnetic structure, the loudspeaker with the compound magnetic circuit is more sensitive.
Description
Technical field
The present invention relates to a kind of processing method of loud speaker, especially relate to a kind of processing method of composite magnetic circuit loudspeaker.
Background technology
Loudspeaker are widely used in the daily life, especially will use loudspeaker in sound box system, and are in places such as some large-scale stages, exhibition scenes, 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 the 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 the pressing plate, and voice coil loudspeaker voice coil is inserted in the slit between pressing plate and the T iron.Because outside magnet steel was arranged on, the external diameter of magnet steel caused 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 provides a kind of processing method of composite magnetic circuit loudspeaker, and the composite magnetic circuit loudspeaker that obtains has little but the composite magnetic circuit loudspeaker that sensitivity is higher of magnet steel volume.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of processing method of 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, concrete steps are as follows: 1) use in the form of a ring the AB glue bond between lower plate and train wheel bridge a plurality of button-type magnet steel, form outer magnetic assembly, outer magnetic assembly put in the magnet charger magnetize, make train wheel bridge be the S utmost point, lower plate is the N utmost point;
2) outer magnetic assembly is put into the basin frame, lower plate uses the AB glue bond on the basin frame;
3) with AB glue the center magnet steel is bonded between upper core and the lower core, magnetic assembly in forming is put into magnet charger with interior magnetic assembly and is magnetized, and makes upper core be the N utmost point, and lower core is the S utmost point;
4) insert set gauge in the centre bore of outer magnetic assembly, then interior magnetic assembly is put into set gauge, lower core uses the AB glue bond on the zone center of iron core bracket;
5) after natural drying 15 minutes, extract set gauge, the composite magnetic circuit assembling is finished.
Described set gauge lower end is inserted in the gap of lower plate and zone center, and described set gauge comprises the cylinder body of two open ends, and described cylinder body upper end sidepiece is provided with pinch hand.
Insert double wrap line voice coil loudspeaker voice coil in the annular gap between described outer magnetic assembly and the described interior magnetic assembly.
Described double wrap line voice coil loudspeaker voice coil comprises skeleton, the first coil and the second coil on the skeleton, be spaced a distance between described the first coil and described the second coil, in first magnetic gap of described the first coil between lower core and lower plate, in second magnetic gap of described the second coil between upper core and train wheel bridge.
Described the first coil laterally is wrapped on the skeleton in a clockwise direction, and described the second coil is counterclockwise laterally to be wrapped on the skeleton, and described the first coil is electrically connected mutually with the second coil.
Compared with prior art, the invention has the advantages that the composite magnetic circuit structure loudspeaker that process with the method, compare the loudspeaker of outer magnetic structure, reduced significantly the volume of magnet steel, reduced production cost, compared the loudspeaker of inner magnetic structure, sensitivity is higher.The magnetic density that the present invention compares the equal volume magnet steel has increased about 60%, 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 the outer magnetic, magnetic line of force direction between lower plate and the lower core and the magnetic line of force opposite direction between train wheel bridge and the upper core, the first coil is opposite with the direction of winding of the second coil, the logical tone currents direction of institute is just opposite, according to the Left Hand Rule gained, the first coil is identical with the force direction that the second coil cutting magnetic line produces, and therefore acting on the voice coil loudspeaker voice coil is making a concerted effort of two active forces.Owing to 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.
A plurality of button-type magnet steel are compared single annular magnetic steel, and processing technology is simple, and production cost is lower.
Set gauge is used for the gummed location of interior magnetic assembly, guarantees the magnetic gap size evenly, and magnetic flux density is identical.
Description of drawings
Fig. 1 is the explosive view of gained loud speaker of the present invention;
Fig. 2 is the structure chart of gained loud speaker of the present invention;
Fig. 3 is processing technology figure of the present invention.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
A kind of processing method of composite magnetic circuit loudspeaker, comprise basin frame 1 and iron core bracket 2, iron core bracket 2 comprises zone center 21 and annular table 22, basin frame 1 bottom is fixed on the annular table of iron core bracket 2, concrete steps are as follows: 1) use in the form of a ring the AB glue bond between lower plate 9 and train wheel bridge 7 a plurality of button-type magnet steel 8, form outer magnetic assembly, outer magnetic assembly is put in the magnet charger magnetized, make train wheel bridge 7 be the S utmost point, lower plate 9 is the N utmost point;
2) outer magnetic assembly is put into basin frame 1, lower plate 9 usefulness AB glue bonds are on basin frame 1;
3) with AB glue the center magnet steel is glued 5 between upper core 4 and lower core 6, magnetic assembly in forming is put into magnet charger with interior magnetic assembly and is magnetized, and makes upper core 4 be the N utmost point, and lower core 6 is the S utmost point;
4) insert set gauge 17 in the centre bore of outer magnetic assembly, then interior magnetic assembly is put into set gauge 17, lower core 6 usefulness AB glue bonds are on the zone center 21 of iron core bracket 2;
5) after natural drying 15 minutes, extract set gauge 17, the composite magnetic circuit assembling is finished.
A kind of composite magnetic circuit loudspeaker, comprise basin frame 1 and iron core bracket 2, iron core bracket 2 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 fixedly installed interior magnetic assembly on the zone center 21 of iron core bracket 2, the outer magnetic assembly of annular is set on the annular table 22, inserts double wrap line voice coil loudspeaker voice coil 3 in the annular gap between interior magnetic assembly and the outer magnetic assembly.
Interior magnetic assembly comprises upper core 4, center magnet steel 5 and lower core 6, center magnet steel 5 is arranged between upper core 4 and the lower core 6, outer magnetic assembly comprises train wheel bridge 7, a plurality of button-type magnet steel 8 and lower plate 9, a plurality of button-type magnet steel 8 annular spread are between train wheel bridge 7 and lower plate 9, double wrap line voice coil loudspeaker voice coil 3 comprises skeleton 31, the first coil 32 and the second coil 33 on the skeleton 31, be spaced a distance between the first coil 32 and the second coil 33, in first magnetic gap of the first coil 32 between lower core 6 and lower plate 9, in second magnetic gap of the second coil 33 between upper core 4 and train wheel bridge 7.
In whole circulation magnetic circuit, upper core is the N utmost point, and lower core is the S utmost point, and train wheel bridge is the S utmost point, and lower plate is the N utmost point.The first coil 32 laterally is wrapped on the skeleton 31 in a clockwise direction, and the second coil 33 is counterclockwise laterally to be wrapped on the skeleton 31, and the first coil 32 is electrically connected mutually with the second coil 33.
Also comprise playing ripple 11, cone 12 and dust cap 13, play ripple 11 and be fixed on the double wrap line voice coil loudspeaker voice coil 3, cone 1 is fixed on the double wrap line voice coil loudspeaker voice coil 3, and dust cap 13 is fixed on the cone 12.
Be provided with binding post 14 on the basin frame 1, double wrap line voice coil loudspeaker voice coil 3 is connected with binding post 14 by lead-out wire 15.
Cone 12 outward flanges are fixed on the basin frame 1 by press strip 16.
Claims (5)
1. the processing method of a 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 concrete steps are as follows: 1) use in the form of a ring the epoxide resin AB glue bond between lower plate and train wheel bridge a plurality of button-type magnet steel, form outer magnetic assembly, outer magnetic assembly is put in the magnet charger magnetized, make train wheel bridge be the S utmost point, lower plate is the N utmost point;
2) outer magnetic assembly is put into the basin frame, lower plate uses the epoxide resin AB glue bond on the basin frame;
3) with epoxide resin AB glue the center magnet steel is bonded between upper core and the lower core, magnetic assembly in forming is put into magnet charger with interior magnetic assembly and is magnetized, and makes upper core be the N utmost point, and lower core is the S utmost point;
4) insert set gauge in the centre bore of outer magnetic assembly, then interior magnetic assembly is put into set gauge, lower core uses the AB glue bond on the zone center of iron core bracket;
5) after natural drying 15 minutes, extract set gauge, the composite magnetic circuit assembling is finished.
2. the processing method of a kind of composite magnetic circuit loudspeaker according to claim 1, it is characterized in that described set gauge lower end is inserted in the gap of lower plate and zone center, described set gauge comprises the cylinder body of two open ends, and described cylinder body upper end sidepiece is provided with pinch hand.
3. the processing method of a kind of composite magnetic circuit loudspeaker according to claim 1 is characterized in that inserting in the annular gap between described outer magnetic assembly and the described interior magnetic assembly double wrap line voice coil loudspeaker voice coil.
4. the processing method of a kind of composite magnetic circuit loudspeaker according to claim 3, it is characterized in that described double wrap line voice coil loudspeaker voice coil comprises skeleton, the first coil and the second coil on the skeleton, be spaced a distance between described the first coil and described the second coil, in first magnetic gap of described the first coil between lower core and lower plate, in second magnetic gap of described the second coil between upper core and train wheel bridge.
5. the processing method of a kind of composite magnetic circuit loudspeaker according to claim 4, it is characterized in that described the first coil laterally is wrapped on the skeleton in a clockwise direction, described the second coil is counterclockwise laterally to be wrapped on the skeleton, and described the first coil is electrically connected mutually with the second coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010247103 CN101909238B (en) | 2010-08-04 | 2010-08-04 | Process method for loudspeaker with compound magnetic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010247103 CN101909238B (en) | 2010-08-04 | 2010-08-04 | Process method for loudspeaker with compound magnetic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101909238A CN101909238A (en) | 2010-12-08 |
| CN101909238B true CN101909238B (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010247103 Expired - Fee Related CN101909238B (en) | 2010-08-04 | 2010-08-04 | Process method for loudspeaker with compound magnetic circuit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474198B (en) * | 2013-08-09 | 2016-02-03 | 美特科技(苏州)有限公司 | The magnetization method of the two major and minor magnetic of magnetic speaker of a kind of external magnetic type |
| CN103731775B (en) * | 2013-12-20 | 2017-01-11 | 苏州恒听电子有限公司 | Difference magnetizing mechanism |
| CN111586551B (en) * | 2020-04-21 | 2021-01-29 | 东莞市融贤实业有限公司 | Auxiliary magnetic adding device and method for loudspeaker |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886965Y (en) * | 2006-05-17 | 2007-04-04 | 苏州上声电子有限公司 | Magnetic circuit structure of loudspeaker |
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 |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886965Y (en) * | 2006-05-17 | 2007-04-04 | 苏州上声电子有限公司 | Magnetic circuit structure of loudspeaker |
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| CN101909238A (en) | 2010-12-08 |
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| 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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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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