CN101902676B - Dual-sound basin thin speaker - Google Patents
Dual-sound basin thin speaker Download PDFInfo
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- CN101902676B CN101902676B CN 201010269259 CN201010269259A CN101902676B CN 101902676 B CN101902676 B CN 101902676B CN 201010269259 CN201010269259 CN 201010269259 CN 201010269259 A CN201010269259 A CN 201010269259A CN 101902676 B CN101902676 B CN 101902676B
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Abstract
The invention relates to a dual-sound basin thin speaker which comprises a basin frame with a basin-shaped cavity, a magnetic circuit structure arranged in the basin frame, and a main sound basin arranged at the periphery of the magnetic circuit structure, wherein the magnetic circuit structure is closely combined on the inner surface at the bottom of the basin frame; the edge of the main sound basin is supported on the edge of the basin frame, and a central hole wall of the main sound basin is closely combined with an outer wall of a sound coil of the magnetic circuit structure; a wiring board is arranged on the basin frame, and a lead wire of the sound ring of the magnetic circuit structure is connected with the wiring board; a locating support and an auxiliary sound basin are further arranged at the periphery of the magnetic circuit structure; and the bottom of the locating support is closely combined on the inner surface at the bottom of the basin frame, the auxiliary sound basin is positioned below the main sound basin, the edge of the auxiliary sound basin is supported on the top of the locating support, and a central hole wall of the auxiliary sound basin is closely combined with the outer wall of the sound coil of the magnetic circuit structure. The dual-sound basin thin speaker has artful, compact and rational structure, and can ensure compliance of a vibrating system, improve low-frequency response characteristics, rapidly discharge thermal energy and guarantee acoustic performance and reliability of the speaker while optimizing thickness.
Description
Technical field
The invention belongs to the electroacoustic techniques field, relate to a kind of loud speaker, specifically a kind of thin speaker with double-tone basin structure.
Background technology
In the prior art; The loud speaker that is applied on the plate video equipments such as LCD, PDP generally adopts infundibulate sound basin to cooperate the structure of locating branch slice, is provided with ring at the edge of infundibulate sound basin, offers centre bore at the center of sound basin; The locating branch slice that offers centre bore equally is arranged on the below of sound basin; Voice coil loudspeaker voice coil penetrates the centre bore of sound basin and locating branch slice, and the center bore inner wall of the outer wall of voice coil loudspeaker voice coil and sound basin and locating branch slice is combined closely, thereby forms the vibrational system of loud speaker.In order further to optimize the thickness of loud speaker, the existing conventional means are the basin framves that adopt the bottom airtight, have directly dispensed traditional conductive magnetic yoke, and original magnetic structure is simplified to open magnetic structure.But defective such as this open magnetic structure that removes conductive magnetic yoke exists Distribution of Magnetic Field inhomogeneous, and caloric value is big influences the reliability of speaker operation.And because shortcoming such as loadspeaker structure is thinner, and Oscillation Amplitude is little, and it exists resonance frequency high, and bass is bad, acoustic performance can't guarantee.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; Provide that a kind of structure is ingenious, the dual-sound basin thin speaker of compact and reasonable; This loud speaker can guarantee the compliance of vibrational system in thickness optimization; Improve the LF-response characteristic, can discharge the voice coil loudspeaker voice coil heat energy that cutting magnetic line produces in alternating magnetic field fast, guarantee the acoustic performance and the reliability of loud speaker.
According to technical scheme provided by the invention; Said dual-sound basin thin speaker comprises the basin frame with basin shape chamber, the keynote basin that is installed in the magnetic structure in the basin frame and is arranged on the magnetic structure periphery; Magnetic structure is combined closely on basin frame bottom interior surface; The edge of keynote basin is supported on the basin frame edge, and the voice coil loudspeaker voice coil outer wall of keynote basin center hole wall and magnetic structure is combined closely; On the basin frame, terminal block is installed, the voice coil leads of magnetic structure is connected with terminal block; It is characterized in that: said magnetic structure periphery also is provided with locating support and secondary sound basin; Combine closely on basin frame bottom interior surface in the locating support bottom; Secondary sound basin is positioned at keynote basin below; The edge of secondary sound basin is supported on the locating support top, and the voice coil loudspeaker voice coil outer wall of secondary sound basin center hole wall and magnetic structure is combined closely.
As further improvement of the present invention; Said magnetic structure comprises location thin slice, main magnet, magnetic pole core, secondary magnet and voice coil loudspeaker voice coil; Combine closely on basin frame bottom interior surface in thin slice bottom, location; Combining closely in the bottom of location thin slice top and main magnet, combines closely the magnetic pole core top secondary magnet of having combined closely bottom main magnet top and the magnetic pole core; Voice coil loudspeaker voice coil is looped around around main magnet, magnetic pole core and the secondary magnet, and the outer wall of the inwall of voice coil loudspeaker voice coil and main magnet, magnetic pole core and secondary magnet leaves the gap, and the voice coil loudspeaker voice coil outer wall is combined closely with keynote basin center hole wall, secondary sound basin center hole wall respectively.
As further improvement of the present invention; The edge of said keynote basin extends to its center position; At first be recessed to form a circle keynote basin ring; The inner ring of keynote basin ring extends below to center position is oblique, forms a funnel shaped keynote basin body, and the center of keynote basin body is provided with keynote basin centre bore; The edge of said secondary sound basin extends to its center position; At first be recessed to form the secondary sound basin ring of a circle; The inner ring of secondary sound basin ring extends to center position obliquely, forms one and falls funnel shaped secondary sound basin body, and the center of secondary sound basin body is provided with secondary sound basin centre bore.Preferably, the cross section of said keynote basin ring, secondary sound basin ring all is circular arc.
As further improvement of the present invention, said basin frame bottom is airtight plane, offers the heat radiation window on the basin frame wall; Said locating support ringwise, the locating support wall is provided with thermovent.
As further improvement of the present invention, said basin frame and locating support all adopt, and metal or plastic material high temperature resistant, easy-formation are processed.
As further improvement of the present invention, said keynote basin center is provided with dust cap, and it is lamellar that dust cap is, and the dust cap end face is concordant with keynote basin edge end face.Dust cap is contained in the voice coil loudspeaker voice coil top.
As a further improvement on the present invention, said keynote basin ring, secondary sound basin ring adopt thin thickness, intensity height, good springiness, tear resistance and the good elastomeric material of resistance to abrasion to make.Preferably, said keynote basin ring, secondary sound basin ring adopt the thermoplastic polyurethane elastic material to process.
The present invention compared with prior art, advantage is: ingenious, the compact and reasonable of structure, through locating support and secondary sound basin are set; It is big when reducing loud speaker thickness, to have overcome the loudspeaker voice coil heating; The shortcoming of compliance difference had not only realized the structure slimming but also had improved the born power of loud speaker, had reduced resonance frequency; Improve bass tonequality, strengthened the reliability of loud speaker.
Description of drawings
Fig. 1 is the structural representation of the preferred embodiment of the present invention.
Fig. 2 is the three-dimensional decomposition texture sketch map of Fig. 1.
Fig. 3 is the three-dimensional cutaway view that locating support, secondary sound basin, keynote basin and voice coil loudspeaker voice coil combine situation.
Description of reference numerals: 1-basin frame, 1a-basin frame edge, 1b-heat radiation window, 2-locating support, 2a-thermovent, the secondary sound basin of 3-, the secondary sound basin of 3a-ring, the secondary sound basin of 3b-body, the secondary sound basin of 3c-centre bore, 4-location thin slice, 5-master's magnet, 6-magnetic pole core, the secondary magnet of 7-, 8-voice coil loudspeaker voice coil, 9-keynote basin, 9a-keynote basin ring, 9b-keynote basin body, 9c-keynote basin centre bore, 10-dust cap, 11-terminal block.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in the figure, the dual-sound basin thin speaker among the embodiment mainly is made up of basin frame 1, locating support 2, secondary sound basin 3, location thin slice 4, main magnet 5, magnetic pole core 6, secondary magnet 7, voice coil loudspeaker voice coil 8, keynote basin 9, dust cap 10 and terminal block 11.
Like Fig. 1 ~ shown in Figure 3, the periphery of said basin frame 1 is basin frame edge 1a, and basin frame edge 1a inwardly has the basin shape chamber of depression, and basin frame 1 bottom is airtight plane, and terminal block 11 is installed on the basin frame 1, offers heat radiation window 1b on basin frame 1 wall.Said basin frame 1 preferred employing metal or plastic material high temperature resistant, easy-formation are processed.
Like Fig. 1 ~ shown in Figure 3; Said magnetic structure is installed in the basin shape chamber of basin frame 1; Magnetic structure mainly is made up of location thin slice 4, main magnet 5, magnetic pole core 6, secondary magnet 7 and voice coil loudspeaker voice coil 8; Location thin slice 4 adopts the magnetic conductive metal material to process, and location thin slice 4 is used to improve the height of main magnet 5 and magnetic pole core 6, to confirm the position of main magnet 5 in basin frame 1 bottom; Combining closely on basin frame 1 bottom interior surface in thin slice 4 bottoms, location, combines closely in the bottom of thin slice 4 tops, location and main magnet 5, combines closely in main magnet 5 tops and magnetic pole core 6 bottoms, the magnetic pole core 6 tops secondary magnet 7 of having combined closely; Voice coil loudspeaker voice coil 8 is looped around around main magnet 5, magnetic pole core 6 and the secondary magnet 7, and the outer wall of the inwall of voice coil loudspeaker voice coil 8 and main magnet 5, magnetic pole core 6 and secondary magnet 7 leaves the gap, and the lead-in wire of voice coil loudspeaker voice coil 8 is connected with terminal block 11.
Like Fig. 1 ~ shown in Figure 3, said locating support 2 is an annular, and locating support 2 is arranged on the magnetic structure periphery, combines closely on basin frame 1 bottom interior surface in locating support 2 bottoms, and locating support 2 walls are provided with thermovent 2a.Said locating support 2 preferred employings metal or plastic material high temperature resistant, easy-formation are processed.
Like Fig. 1 ~ shown in Figure 3, the edge of said secondary sound basin 3 extends to its center position, at first is recessed to form the secondary sound basin ring 3a of a circle, and circular arc preferably is arranged in the cross section of secondary sound basin ring 3a; The inner ring of secondary sound basin ring 3a extends to center position obliquely, forms one and falls funnel shaped secondary sound basin body 3b, and the center of secondary sound basin body 3b is provided with secondary sound basin centre bore 3c.Secondary sound basin 3 is contained in the basin frame 1 and is arranged on the magnetic structure periphery, and secondary sound basin 3 is positioned at keynote basin 9 belows, and the edge of secondary sound basin 3 is supported on locating support 2 tops, and voice coil loudspeaker voice coil 8 outer walls in secondary sound basin centre bore 3c wall and the magnetic structure are combined closely.Secondary sound basin ring 3a on the said secondary sound basin 3 adopts thin thickness, intensity height, good springiness, tear resistance and the good elastomeric material of resistance to abrasion to make.The preferred thermoplastic polyurethane elastic material that adopts is processed.This pair sound basin centre bore 3c and voice coil loudspeaker voice coil 8 outer walls are combined closely, and guarantee to keep linear when voice coil loudspeaker voice coil 8 is switched on the back axially reciprocating, improve the compliance of speaker vibration system, and the reduction resonance frequency improves Oscillation Amplitude.When secondary sound basin 3 is made axially reciprocating along with voice coil loudspeaker voice coil 8 simultaneously; The heat energy that can the alternating magnetic field magnetic line of force that the main magnet of voice coil loudspeaker voice coil 8 cutting 5, magnetic pole core 6, secondary magnet 7 form be produced is discharged through the thermovent 2a of locating support 2 rapidly, strengthens the speaker operation reliability.
Like Fig. 1 ~ shown in Figure 3, the edge of said keynote basin 9 extends to its center position, at first is recessed to form a circle keynote basin ring 9a, and circular arc preferably is arranged in the cross section of keynote basin ring 9a; The inner ring of keynote basin ring 9a extends below to center position is oblique, forms a funnel shaped keynote basin body 9b, and the center of keynote basin body 9b is provided with keynote basin centre bore 9c.Keynote basin 9 is arranged on the magnetic structure periphery, and keynote basin 9 is positioned at secondary sound basin 3 tops, and the edge of keynote basin 9 is supported on the basin frame edge 1a, and voice coil loudspeaker voice coil 8 outer walls in keynote basin centre bore 9c wall and the magnetic structure are combined closely.Keynote basin ring 9a on the said keynote basin 9 adopts thin thickness, intensity height, good springiness, tear resistance and the good elastomeric material of resistance to abrasion to make.The preferred thermoplastic polyurethane elastic material that adopts is processed.
Like Fig. 1 ~ shown in Figure 3, said keynote basin 9 centers are provided with dust cap 10, and dust cap 10 is lamellar, and dust cap 10 end faces are concordant with keynote basin 9 edge end faces.Dust cap 10 is contained in voice coil loudspeaker voice coil 8 tops, is used to prevent that extraneous dust, pollutant from getting in the voice coil loudspeaker voice coil.
Claims (9)
1. dual-sound basin thin speaker; Comprise the basin frame (1) with basin shape chamber, the keynote basin (9) that is installed in the magnetic structure in the basin frame (1) and is arranged on the magnetic structure periphery; Magnetic structure is combined closely on basin frame (1) bottom interior surface; The edge of keynote basin (9) is supported on the basin frame edge (1a), and voice coil loudspeaker voice coil (8) outer wall of keynote basin centre bore (9c) wall and magnetic structure is combined closely; Terminal block (11) is installed on basin frame (1), and the voice coil loudspeaker voice coil of magnetic structure (8) lead-in wire is connected with terminal block (11); It is characterized in that: said magnetic structure periphery also is provided with locating support (2) and secondary sound basin (3); Combine closely on basin frame (1) bottom interior surface in locating support (2) bottom; Secondary sound basin (3) is positioned at keynote basin (9) below; The edge of secondary sound basin (3) is supported on locating support (2) top, and voice coil loudspeaker voice coil (8) outer wall of secondary sound basin centre bore (3c) wall and magnetic structure is combined closely;
The edge of said keynote basin (9) extends to its center position; At first be recessed to form a circle keynote basin ring (9a); The inner ring of keynote basin ring (9a) extends below to center position is oblique; Form a funnel shaped keynote basin body (9b), the center of keynote basin body (9b) is provided with keynote basin centre bore (9c); The edge of said secondary sound basin (3) extends to its center position; At first be recessed to form a circle secondary sound basin ring (3a); The inner ring of secondary sound basin ring (3a) extends to center position obliquely; Form one and fall funnel shaped secondary sound basin body (3b), the center of secondary sound basin body (3b) is provided with secondary sound basin centre bore (3c).
2. dual-sound basin thin speaker as claimed in claim 1; It is characterized in that: said magnetic structure comprises location thin slice (4), main magnet (5), magnetic pole core (6), secondary magnet (7) and voice coil loudspeaker voice coil (8); Combine closely on basin frame (1) bottom interior surface in location thin slice (4) bottom; Combine closely in the bottom of thin slice (4) top, location and main magnet (5); Combine closely in main magnet (5) top and magnetic pole core (6) bottom, magnetic pole core (6) the top secondary magnet (7) of having combined closely; Voice coil loudspeaker voice coil (8) is looped around main magnet (5), magnetic pole core (6) and secondary magnet (7) on every side; The outer wall of the inwall of voice coil loudspeaker voice coil (8) and main magnet (5), magnetic pole core (6) and secondary magnet (7) leaves the gap, and voice coil loudspeaker voice coil (8) outer wall is combined closely with keynote basin centre bore (9c) wall, secondary sound basin centre bore (3c) wall respectively.
3. dual-sound basin thin speaker as claimed in claim 1 is characterized in that: said basin frame (1) bottom is airtight plane, offers heat radiation window (1b) on basin frame (1) wall; Said locating support (2) ringwise, locating support (2) wall is provided with thermovent (2a).
4. dual-sound basin thin speaker as claimed in claim 1 is characterized in that: said basin frame (1) and locating support (2) all adopt metal or plastic material to process.
5. dual-sound basin thin speaker as claimed in claim 1 is characterized in that: said keynote basin (9) center is provided with dust cap (10), and dust cap (10) is lamellar, and dust cap (10) end face is concordant with keynote basin (9) edge end face.
6. dual-sound basin thin speaker as claimed in claim 2 is characterized in that: dust cap (10) is equipped with at said voice coil loudspeaker voice coil (8) top.
7. dual-sound basin thin speaker as claimed in claim 1 is characterized in that: the cross section of said keynote basin ring (9a), secondary sound basin ring (3a) all is circular arc.
8. dual-sound basin thin speaker as claimed in claim 1 is characterized in that: said keynote basin ring (9a), secondary sound basin ring (3a) adopt elastomeric material to process.
9. dual-sound basin thin speaker as claimed in claim 1 is characterized in that: said keynote basin ring (9a), secondary sound basin ring (3a) adopt the thermoplastic polyurethane elastic material to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010269259 CN101902676B (en) | 2010-08-31 | 2010-08-31 | Dual-sound basin thin speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010269259 CN101902676B (en) | 2010-08-31 | 2010-08-31 | Dual-sound basin thin speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101902676A CN101902676A (en) | 2010-12-01 |
| CN101902676B true CN101902676B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010269259 Active CN101902676B (en) | 2010-08-31 | 2010-08-31 | Dual-sound basin thin speaker |
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| CN (1) | CN101902676B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291651B (en) * | 2011-06-16 | 2014-01-22 | 无锡杰夫电声有限公司 | Dual-cone thin loudspeaker with step structure |
| CN102256197B (en) * | 2011-07-05 | 2013-10-30 | 无锡杰夫电声有限公司 | Loudspeaker with multiple sound cones |
| CN102547536B (en) * | 2012-01-10 | 2014-08-13 | 无锡杰夫电声有限公司 | Runway-shaped double-cone speaker |
| CN102843636A (en) * | 2012-08-28 | 2012-12-26 | 深圳Tcl新技术有限公司 | Loudspeaker |
| CN107040851B (en) * | 2017-05-26 | 2020-11-24 | 歌尔股份有限公司 | Magnetic circuit assembly and miniature acoustic generator with same |
| CN107286409A (en) * | 2017-06-22 | 2017-10-24 | 瑞声科技(新加坡)有限公司 | Sound film, the electro-acoustic element of ring and preparation method thereof and application ring |
| CN110225440A (en) * | 2019-07-15 | 2019-09-10 | 苏州茹声电子有限公司 | A kind of loudspeaker of multichannel input driving |
| CN110650415A (en) * | 2019-08-26 | 2020-01-03 | 歌尔股份有限公司 | Sound production device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3365123B2 (en) * | 1995-02-22 | 2003-01-08 | 松下電器産業株式会社 | Double cone speaker |
| CN1698397A (en) * | 2003-03-31 | 2005-11-16 | 松下电器产业株式会社 | Speaker |
| CN101616352A (en) * | 2009-07-01 | 2009-12-30 | 无锡杰夫电声有限公司 | The thin speaker that has waved vibrating plate |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08116583A (en) * | 1994-10-17 | 1996-05-07 | Matsushita Electric Ind Co Ltd | Double cone speaker |
| JPH08140175A (en) * | 1994-11-14 | 1996-05-31 | Matsushita Electric Ind Co Ltd | Double cone speaker |
-
2010
- 2010-08-31 CN CN 201010269259 patent/CN101902676B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3365123B2 (en) * | 1995-02-22 | 2003-01-08 | 松下電器産業株式会社 | Double cone speaker |
| CN1698397A (en) * | 2003-03-31 | 2005-11-16 | 松下电器产业株式会社 | Speaker |
| CN101616352A (en) * | 2009-07-01 | 2009-12-30 | 无锡杰夫电声有限公司 | The thin speaker that has waved vibrating plate |
Non-Patent Citations (1)
| Title |
|---|
| 沈伟星等.玉振金声——漫谈扬声器.《电声技术》.2007,(第S1期), * |
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| CN101902676A (en) | 2010-12-01 |
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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 |