CN102291651B - Dual-cone thin loudspeaker with step structure - Google Patents
Dual-cone thin loudspeaker with step structure Download PDFInfo
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- CN102291651B CN102291651B CN201110161776.8A CN201110161776A CN102291651B CN 102291651 B CN102291651 B CN 102291651B CN 201110161776 A CN201110161776 A CN 201110161776A CN 102291651 B CN102291651 B CN 102291651B
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Abstract
The invention relates to a dual-cone thin loudspeaker with a step structure. The loudspeaker comprises a cone stand, a positioning support, a U-shaped magnetic conduction yoke, a magnet, a magnetic pole core, a voice coil and a main cone, and is characterized in that: the center of an auxiliary cone is provided with an auxiliary cone step; the auxiliary cone step upwards passes through a middle hole of the main cone; the center of the main cone is provided with a main cone step; the inner surface of the main cone step is tightly bonded with the outer surface of the auxiliary cone step; a certain distance is kept between the inner surface of the top of the auxiliary cone step and the top of the U-shaped magnetic conduction yoke; and a certain distance is kept between an inner peripheral wall of the auxiliary cone step and an outer peripheral wall of the U-shaped magnetic conduction yoke. The dual-cone thin loudspeaker is ingenious, compact and reasonable in structure, a thin structure is realized, the U-shaped magnetic conduction yoke is maintained, the uniformity of magnetic field distribution is improved, the magnetic force (BL) value of the loudspeaker is increased, the characteristic sensitivity of the loudspeaker is improved, the resonant frequency is reduced, the bass response characteristic is improved, and the reliability and the voice quality of the loudspeaker are enhanced.
Description
Technical field
The invention belongs to electroacoustic techniques field, relate to a kind of loud speaker, specifically a kind of dual-sound basin thin speaker with ledge structure.
Background technology
In prior art, the loud speaker being applied on the plate video equipments such as LCD, PDP generally adopts infundibulate sound basin to coordinate the structure of locating branch slice, edge at infundibulate sound basin is provided with ring, Yin Pen center offers centre bore, the locating branch slice that offers equally centre bore 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, existing conventional means is the basin frame that adopts bottom airtight, has directly dispensed traditional conductive magnetic yoke, and original magnetic structure is simplified to open type magnetic line structure.But, thisly remove the defects such as the open type magnetic line structure of conductive magnetic yoke exists Distribution of Magnetic Field inhomogeneous, and caloric value is large, affect the reliability of speaker operation.And the shortcoming such as because loadspeaker structure is thinner, Oscillation Amplitude is little, and it exists resonance frequency high, and bass is bad, acoustic performance cannot guarantee.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of structure ingenious, the dual-sound basin thin speaker with ledge structure of compact and reasonable, this loud speaker passes through at keynote basin, setting table stage structure on secondary sound basin, when reducing loud speaker thickness, overcome loudspeaker voice coil heating large, the shortcoming that compliance is poor, both realized structure slimming, retained again the U-shaped conductive magnetic yoke in magnetic structure, improved the uniformity of Distribution of Magnetic Field, BL value and the characteristic ssensitivity of loud speaker have been improved, reduced resonance frequency, improved bass response characteristic, reliability and the tonequality of loud speaker have been strengthened.
According to technical scheme provided by the invention: described in there is the dual-sound basin thin speaker of ledge structure, comprise basin frame, locating support, U-shaped conductive magnetic yoke, magnet, magnetic pole core, voice coil loudspeaker voice coil and keynote basin, described basin frame has the basin shape chamber of an indent, and U-shaped conductive magnetic yoke is fixed in the basin shape chamber of basin frame; It is peripheral that described secondary sound basin is arranged on U-shaped conductive magnetic yoke, and the edge of secondary sound basin is supported on locating support, and the locating support ，Fu Yinpen center on basin frame bottom interior surface of combining closely has secondary sound basin mesopore; Described keynote basin is positioned at secondary sound basin top, and the edge of keynote basin is supported on basin frame edge, and keynote basin center has keynote basin mesopore; Described magnet, magnetic pole core and voice coil loudspeaker voice coil are arranged in U-shaped conductive magnetic yoke, and voice coil loudspeaker voice coil is looped around magnet and magnetic pole core is peripheral, between voice coil loudspeaker voice coil internal perisporium and magnet and magnetic pole core periphery wall, leaves gap, between voice coil loudspeaker voice coil periphery wall and U-shaped conductive magnetic yoke internal perisporium, leaves gap; It is characterized in that: described Fu Yinpen center is provided with secondary sound basin step, secondary sound basin step is upward through keynote basin mesopore; Described keynote basin center is provided with keynote basin step, and the inner surface of keynote basin step is combined with the intimate of secondary sound basin step; The top inner surface of described secondary sound basin step and the top of U-shaped conductive magnetic yoke keep certain distance, and the internal perisporium of described secondary sound basin step and the periphery wall of U-shaped conductive magnetic yoke cylindrical shell keep certain distance.
As a further improvement on the present invention, described secondary sound basin step center has slave station rank centre bore, described keynote basin step center has main step centre bore, described voice coil loudspeaker voice coil comprises coaxial voice coil loudspeaker voice coil coil and speech coil framework, speech coil framework is upward through slave station rank centre bore and main step centre bore, combining closely with the periphery wall of speech coil framework in the interior edge of slave station rank centre bore and main step centre bore, at the top of speech coil framework, is fitted with dust cap.
As a further improvement on the present invention, the top of described speech coil framework is higher than the top peak of keynote basin ring, described dust cap upper surface and keynote basin ring top peak maintain an equal level.
As a further improvement on the present invention, described secondary sound basin edge is supported on locating support, and the inner edge at secondary sound basin edge wherein heart direction extends, and is first recessed to form the secondary sound basin of circle ring; The inner edge of described secondary sound basin ring continues heart direction horizontal-extending certain distance wherein, forms secondary sound basin body, and the center of secondary sound basin body is secondary sound basin mesopore; Described secondary sound basin body upper surface raise up and extend certain altitude after to center position, extend a segment distance again, form described secondary sound basin step.Further, the cross section of described secondary sound basin ring is circular arc.
As a further improvement on the present invention, described keynote basin edge is supported on basin frame edge, and the inner edge at keynote basin edge wherein heart direction extends, and is first recessed to form a circle keynote basin ring; The inner edge of described keynote basin ring continues the oblique downward-extension certain distance of heart direction wherein, forms keynote basin body, and the center of keynote basin body is keynote basin mesopore; Described keynote basin body upper surface raise up and extend certain altitude after to center position, extend a segment distance again, form described keynote basin step.Further, the cross section of described keynote basin ring is circular arc.
As a further improvement on the present invention, described secondary sound basin step lower surface, to the distance at U-shaped conductive magnetic yoke top, should be not less than voice coil loudspeaker voice coil bottom lower surface to the distance of U-shaped conductive magnetic yoke bottom interior surface.
As a further improvement on the present invention, on described locating support perisporium, be provided with thermovent.
As a further improvement on the present invention, described Pen Jia bottom centre has basin frame mesopore, and the lower surface center, bottom of U-shaped conductive magnetic yoke is provided with outer lug boss, and this outer lug boss is combined closely in described basin frame mesopore with interference fit.
The present invention compared with prior art, advantage is: structure is ingenious, compact and reasonable, by keynote basin step is set on keynote basin, secondary sound basin step is set on secondary sound basin, when reducing loud speaker thickness, overcome loudspeaker voice coil heating large, the shortcoming that compliance is poor, both realized structure slimming, retained again the U-shaped conductive magnetic yoke in magnetic structure, improve the uniformity of Distribution of Magnetic Field, improved BL value and the characteristic ssensitivity of loud speaker, reduced resonance frequency, improve bass response characteristic, strengthened reliability and the tonequality of loud speaker.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the embodiment of the present invention.
Fig. 2 is the Standard cutaway view of the embodiment of the present invention.
Fig. 3 is the three-dimensional cutaway view of Fig. 1.
Description of reference numerals: 1-basin frame, 1a-basin frame edge, 1b-basin frame mesopore, 2-locating support, 2a-thermovent, 3-U type conductive magnetic yoke, 3a-cylindrical shell, 3b-outer lug boss, the secondary sound basin of 4-, the secondary sound basin of 4a-body, the secondary sound basin of 4b-ring, the secondary sound basin of 4c-step, the secondary sound basin of 4d-mesopore, 4e-slave station rank centre bore, 5-magnet, 6-magnetic pole core, 7-voice coil loudspeaker voice coil, 7a-voice coil loudspeaker voice coil coil, 7b-speech coil framework, 8-keynote basin, 8a-keynote basin body, 8b-keynote basin ring, 8c-keynote basin step, 8d-keynote basin mesopore, the main step centre bore of 8e-, 9-dust cap.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in the figure, the dual-sound basin thin speaker with ledge structure in embodiment is mainly comprised of basin frame 1, locating support 2, U-shaped conductive magnetic yoke 3, secondary sound basin 4, magnet 5, magnetic pole core 6, voice coil loudspeaker voice coil 7, keynote basin 8 and dust cap 9.
As shown in Fig. 1 ~ Fig. 3, the periphery of described basin frame 1 is basin frame edge 1a, and basin frame edge 1a inwardly has the basin shape chamber of an indent, and U-shaped conductive magnetic yoke 3 is arranged in the basin shape chamber of basin frame 1; Described Pen Jia 1 bottom centre has basin frame mesopore 1b, and the lower surface center, bottom of U-shaped conductive magnetic yoke 3 is provided with outer lug boss 3b, and this outer lug boss 3b combines closely in described basin frame mesopore 1b with interference fit; Described magnet 5, magnetic pole core 6 and voice coil loudspeaker voice coil 7 are arranged in U-shaped conductive magnetic yoke 3, and magnet 5 bottoms and U-shaped conductive magnetic yoke 3 bottom interior surfaces are combined closely, and combine closely in magnet 5 tops and magnetic pole core 6 bottoms; Voice coil loudspeaker voice coil 7 is looped around magnet 5 and magnetic pole core 6 peripheries, between voice coil loudspeaker voice coil 7 internal perisporiums and magnet 5 and magnetic pole core 6 periphery walls, leaves gap, between voice coil loudspeaker voice coil 7 periphery walls and U-shaped conductive magnetic yoke 3 internal perisporiums, leaves gap.
As shown in Fig. 1 ~ Fig. 3, described locating support 2 is arranged on the periphery of U-shaped conductive magnetic yoke 3, and locating support 2 is combined closely on basin frame 1 bottom interior surface, is provided with four thermovent 2a on locating support 2 perisporiums.Described locating support 2 preferably adopts metal or plastic material high temperature resistant, easy-formation to make.
As shown in Fig. 1 ~ Fig. 3, described secondary sound basin 4 is contained in basin frame 1, and secondary sound basin 4 is arranged on U-shaped conductive magnetic yoke 3 peripheries, and the edge of secondary sound basin 4 is supported on locating support 2, and secondary sound basin 4 centers have secondary sound basin mesopore 4d; The inner edge at described secondary sound basin 4 edges wherein heart direction extends, and is first recessed to form the secondary sound basin of circle ring 4b, and circular arc is preferably arranged in the cross section of this pair sound basin ring 4b; The inner edge of described secondary sound basin ring 4b continues heart direction horizontal-extending certain distance wherein, forms secondary sound basin body 4a, and secondary sound basin body 4a center is secondary sound basin mesopore 4d; Described secondary sound basin body 4a upper surface raise up and extend certain altitude after to center position, extend a segment distance again, form described secondary sound basin step 4c, at secondary sound basin step 4c center, have slave station rank centre bore 4e.
As shown in Fig. 1 ~ Fig. 3, described keynote basin 8 is positioned at secondary sound basin 4 tops, and it is upper that the edge of keynote basin 8 is supported on basin frame edge 1a, and keynote basin 8 centers have keynote basin mesopore 8d; The inner edge at described keynote basin 8 edges wherein heart direction extends, and is first recessed to form a circle keynote basin ring 8b, and circular arc is preferably arranged in the cross section of this keynote basin ring 8b; The inner edge of described keynote basin ring 8b continues the oblique downward-extension certain distance of heart direction wherein, forms keynote basin body 8a, and keynote basin body 8a center is keynote basin mesopore 8d; Described keynote basin body 8a upper surface raise up and extend certain altitude after to center position, extend a segment distance again, form described keynote basin step 8c, at keynote basin step 8c center, have main step centre bore 8e.
During assembling, as shown in Figure 2, the secondary sound basin step 4c at the center of described secondary sound basin 4 is upward through keynote basin mesopore 8d, and the inner surface of keynote basin step 8c is combined with the intimate of secondary sound basin step 4c; The top inner surface of described secondary sound basin step 4c and the top of U-shaped conductive magnetic yoke 3 keep certain distance, and the periphery wall of the internal perisporium of described secondary sound basin step 4c and U-shaped conductive magnetic yoke 3 cylindrical shell 3a keeps certain distance.
As shown in Fig. 1 ~ Fig. 3, described voice coil loudspeaker voice coil 7 mainly consists of coaxial voice coil loudspeaker voice coil coil 7a and speech coil framework 7b, speech coil framework 7b is upward through slave station rank centre bore 4e and main step centre bore 8e, combine closely with the periphery wall of speech coil framework 7b in the interior edge of slave station rank centre bore 4e and main step centre bore 8e, the top of speech coil framework 7b is not higher than the top peak of keynote basin ring 8b; At the top of speech coil framework 7b, be fitted with dust cap 9, dust cap 9 upper surfaces and keynote basin ring 8b top peak maintain an equal level.
As shown in Fig. 1 ~ Fig. 3, under obstructed signal condition, described secondary sound basin step 4c lower surface, to the distance at U-shaped conductive magnetic yoke 3 tops, should be not less than voice coil loudspeaker voice coil 7 bottom lower surfaces to the distance of U-shaped conductive magnetic yoke 3 bottom interior surfaces.Like this, when voice coil loudspeaker voice coil 7 energisings axially reciprocating, can avoid secondary sound basin step 4c to touch U-shaped conductive magnetic yoke 3, thereby guarantee the position of voice coil loudspeaker voice coil 7 in U-shaped conductive magnetic yoke 3, magnet 5 and the formed magnetic circuit of magnetic pole core 6 gap, guarantee the linearity of each parts mechanical movement of loud speaker, improve the compliance of vibrational system simultaneously, reduce resonance frequency, improve Oscillation Amplitude, improve tonequality and reliability.
Secondary sound basin ring 4b on described secondary sound basin 4, the keynote basin ring 8b on keynote basin 8 all adopt that thin thickness, Strong degree are high, good springiness, tear resistance and the good elastomeric material of resistance to abrasion are made.Preferably adopt On The Elastic Material of The Thermoplastec Polyurethane to make.
Claims (1)
1. the dual-sound basin thin speaker with ledge structure, comprise basin frame (1), locating support (2), U-shaped conductive magnetic yoke (3), magnet (5), magnetic pole core (6), voice coil loudspeaker voice coil (7) and keynote basin (8), described basin frame (1) has the basin shape chamber of an indent, and U-shaped conductive magnetic yoke (3) is fixed in the basin shape chamber of basin frame (1); Secondary sound basin (4) is arranged on U-shaped conductive magnetic yoke (3) periphery, and it is upper that the edge of secondary sound basin (4) is supported on locating support (2), and locating support (2) is combined closely on basin frame (1) bottom interior surface, and secondary sound basin (4) center has secondary sound basin mesopore (4d); Described keynote basin (8) is positioned at secondary sound basin (4) top, and it is upper that the edge of keynote basin (8) is supported on basin frame edge (1a), and keynote basin (8) center has keynote basin mesopore (8d); Described magnet (5), magnetic pole core (6) and voice coil loudspeaker voice coil (7) are arranged in U-shaped conductive magnetic yoke (3), voice coil loudspeaker voice coil (7) is looped around magnet (5) and magnetic pole core (6) periphery, between voice coil loudspeaker voice coil (7) internal perisporium and magnet (5) and magnetic pole core (6) periphery wall, leave gap, between voice coil loudspeaker voice coil (7) periphery wall and U-shaped conductive magnetic yoke (3) internal perisporium, leave gap; It is characterized in that: the center of described secondary sound basin (4) is provided with secondary sound basin step (4c), secondary sound basin step (4c) is upward through keynote basin mesopore (8d); Described keynote basin (8) center is provided with keynote basin step (8c), and the inner surface of keynote basin step (8c) is combined with the intimate of secondary sound basin step (4c); The top of the top inner surface of described secondary sound basin step (4c) and U-shaped conductive magnetic yoke (3) keeps certain distance, and the periphery wall of the internal perisporium of described secondary sound basin step (4c) and U-shaped conductive magnetic yoke (3) cylindrical shell (3a) keeps certain distance;
Described secondary sound basin step (4c) center has slave station rank centre bores (4e), described keynote basin step (8c) center has main step centre bore (8e), described voice coil loudspeaker voice coil (7) comprises coaxial voice coil loudspeaker voice coil coil (7a) and speech coil framework (7b), speech coil framework (7b) is upward through slave station rank centre bores (4e) and main step centre bore (8e), combining closely with the periphery wall of speech coil framework (7b) in the interior edge of slave station rank centre bores (4e) and main step centre bore (8e), at the top of speech coil framework (7b), is fitted with dust cap (9);
The top of described speech coil framework (7b) is not higher than the top peak of keynote basin ring (8b), and the top peak of described dust cap (9) upper surface and keynote basin ring (8b) maintains an equal level;
It is upper that described secondary sound basin (4) edge is supported on locating support (2), and the inner edge at secondary sound basin (4) edge wherein heart direction extends, and is first recessed to form the secondary sound basin ring (4b) of a circle; The inner edge of described secondary sound basin ring (4b) continues heart direction horizontal-extending certain distance wherein, forms secondary sound basin body (4a), and the center of secondary sound basin body (4a) is secondary sound basin mesopore (4d); Described secondary sound basin body (4a) upper surface raise up and extend certain altitude after to center position, extend a segment distance again, form described secondary sound basin step (4c);
The cross section of described secondary sound basin ring (4b) is circular arc;
It is upper that described keynote basin (8) edge is supported on basin frame edge (1a), and the inner edge at keynote basin (8) edge wherein heart direction extends, and is first recessed to form a circle keynote basin ring (8b); The inner edge of described keynote basin ring (8b) continues the oblique downward-extension certain distance of heart direction wherein, forms keynote basin body (8a), and the center of keynote basin body (8a) is keynote basin mesopore (8d); Described keynote basin body (8a) upper surface raise up and extend certain altitude after to center position, extend a segment distance again, form described keynote basin step (8c);
The cross section of described keynote basin ring (8b) is circular arc;
Described secondary sound basin step (4c) lower surface, to the distance at U-shaped conductive magnetic yoke (3) top, should be not less than voice coil loudspeaker voice coil (7) bottom lower surface to the distance of U-shaped conductive magnetic yoke (3) bottom interior surface;
On described locating support (2) perisporium, be provided with thermovent (2a);
Described basin frame (1) bottom centre has basin frame mesopore (1b), and the lower surface center, bottom of U-shaped conductive magnetic yoke (3) is provided with outer lug boss (3b), and this outer lug boss (3b) is combined closely in described basin frame mesopore (1b) with interference fit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110161776.8A CN102291651B (en) | 2011-06-16 | 2011-06-16 | Dual-cone thin loudspeaker with step structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110161776.8A CN102291651B (en) | 2011-06-16 | 2011-06-16 | Dual-cone thin loudspeaker with step structure |
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| CN102291651A CN102291651A (en) | 2011-12-21 |
| CN102291651B true CN102291651B (en) | 2014-01-22 |
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| CN201110161776.8A Active CN102291651B (en) | 2011-06-16 | 2011-06-16 | Dual-cone thin loudspeaker with step structure |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5418612B2 (en) * | 2012-01-16 | 2014-02-19 | オンキヨー株式会社 | Electrodynamic speaker and method for manufacturing the same |
| CN103037283B (en) * | 2012-11-29 | 2015-09-02 | 无锡杰夫电声有限公司 | Thin double-cone phase inversion type loudspeaker box |
| CN103260119B (en) * | 2013-06-06 | 2017-03-15 | 无锡杰夫电声股份有限公司 | The thin speaker of low distortion |
| CN109842841B (en) * | 2017-11-27 | 2024-04-02 | 深圳市三诺数字科技有限公司 | Loudspeaker device |
| 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 |
| CN111405422B (en) * | 2019-11-21 | 2021-11-12 | 瑞声科技(新加坡)有限公司 | Sound production device |
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| US4595801A (en) * | 1983-10-27 | 1986-06-17 | Ronald Coffin | Coupled dual cone velocity driver speaker |
| CN2513313Y (en) * | 2001-03-26 | 2002-09-25 | 潘正平 | Moving-coil speaker using combined vibration film |
| CN201571197U (en) * | 2009-12-24 | 2010-09-01 | 无锡杰夫电声有限公司 | Thin electrodynamic loudspeaker |
| CN101902676A (en) * | 2010-08-31 | 2010-12-01 | 无锡杰夫电声有限公司 | Dual-sound basin thin speaker |
| CN202103833U (en) * | 2011-06-16 | 2012-01-04 | 无锡杰夫电声有限公司 | Double-cone thin type loudspeaker possessing step structure |
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2011
- 2011-06-16 CN CN201110161776.8A patent/CN102291651B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4595801A (en) * | 1983-10-27 | 1986-06-17 | Ronald Coffin | Coupled dual cone velocity driver speaker |
| CN2513313Y (en) * | 2001-03-26 | 2002-09-25 | 潘正平 | Moving-coil speaker using combined vibration film |
| CN201571197U (en) * | 2009-12-24 | 2010-09-01 | 无锡杰夫电声有限公司 | Thin electrodynamic loudspeaker |
| CN101902676A (en) * | 2010-08-31 | 2010-12-01 | 无锡杰夫电声有限公司 | Dual-sound basin thin speaker |
| CN202103833U (en) * | 2011-06-16 | 2012-01-04 | 无锡杰夫电声有限公司 | Double-cone thin type loudspeaker possessing step structure |
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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 |
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Denomination of invention: Dual-cone thin loudspeaker with step structure Effective date of registration: 20190705 Granted publication date: 20140122 Pledgee: Agricultural Bank of China, Limited by Share Ltd, Wuxi, Xishan branch Pledgor: WUXI JIEFU ELECTROACOUSTIC CO., LTD. Registration number: 2019990000661 |
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