CN202103833U - Double-cone thin type loudspeaker possessing step structure - Google Patents
Double-cone thin type loudspeaker possessing step structure Download PDFInfo
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- CN202103833U CN202103833U CN 201120202912 CN201120202912U CN202103833U CN 202103833 U CN202103833 U CN 202103833U CN 201120202912 CN201120202912 CN 201120202912 CN 201120202912 U CN201120202912 U CN 201120202912U CN 202103833 U CN202103833 U CN 202103833U
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- basin
- keynote
- secondary sound
- voice coil
- sound basin
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- 238000010438 heat treatment Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The utility model relates to a double-cone thin type loudspeaker possessing a step structure, comprising a cone frame, a positioning bracket, a U-shaped guide magnetic yoke, a magnet, a magnetic pole core, a voice coil and a main cone. The double-cone thin type loudspeaker possessing the step structure is characterized in that the center of an auxiliary cone is equipped with an auxiliary cone step which upwards penetrates a mesoporous of the main cone; the center of the main cone is equipped with a main cone step, and the inner surface of the main cone step is combined with the outer surface of the auxiliary cone step tightly; the top inner surface of the auxiliary cone step keeps a certain distance away from the top of the U-shaped guide magnetic yoke, and the inner circumferential wall of the auxiliary cone step keeps a certain distance away from the outer circumferential wall of a U-shaped guide magnetic yoke tube body. The double-cone thin type loudspeaker possessing the step is ingenious, compact and reasonable in structure, by using the double-cone thin type loudspeaker possessing the step structure, not only the structure thinning is realized, but also the U-shaped guide magnetic yoke is retained, the uniformity of magnetic field distribution is improved, a BL value and characteristic sensitivity of the loudspeaker are improved, a resonance frequency is reduced, a bass response characteristic is improved, and the reliability and tone quality of the loudspeaker are strengthened.
Description
Technical field
The utility model belongs to the electroacoustic techniques field, relates to a kind of loud speaker, specifically a kind of dual-sound basin thin speaker with ledge 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 purpose of the utility model is to overcome the deficiency that exists in the prior art, provides that a kind of structure is ingenious, the dual-sound basin thin speaker with ledge structure of compact and reasonable, and this loud speaker is through being provided with ledge structure on keynote basin, secondary sound basin; It is big when reducing loud speaker thickness, to have overcome the loudspeaker voice coil heating, and the shortcoming of compliance difference had both realized the structure slimming; Kept the U type conductive magnetic yoke in the magnetic structure again; Improve the uniformity of Distribution of Magnetic Field, improved the BL value and the characteristic ssensitivity of loud speaker, reduced resonance frequency; Improve the bass response characteristic, strengthened the reliability and the tonequality of loud speaker.
The technical scheme that provides according to the utility model: said dual-sound basin thin speaker with ledge structure; Comprise basin frame, locating support, U type conductive magnetic yoke, magnet, magnetic pole core, voice coil loudspeaker voice coil and keynote basin; Said basin frame has the basin shape chamber of an indent, and U type conductive magnetic yoke is fixed in the basin shape chamber of basin frame; It is peripheral that said secondary sound basin is arranged on U type conductive magnetic yoke, and the edge of secondary sound basin is supported on the locating support, and locating support is combined closely on basin frame bottom interior surface, and secondary sound basin center has secondary sound basin mesopore; Said keynote basin is positioned at secondary sound basin top, and the edge of keynote basin is supported on the basin frame edge, and keynote basin center has keynote basin mesopore; Said magnet, magnetic pole core and voice coil loudspeaker voice coil are arranged in the U type conductive magnetic yoke, and voice coil loudspeaker voice coil is looped around magnet and magnetic pole core is peripheral, leaves the gap between voice coil loudspeaker voice coil internal perisporium and magnet and the magnetic pole core periphery wall, leaves the gap between voice coil loudspeaker voice coil periphery wall and the U type conductive magnetic yoke internal perisporium; It is characterized in that: the center of said secondary sound basin is provided with secondary sound basin step, and secondary sound basin step is upward through keynote basin mesopore; Said keynote basin center is provided with keynote basin step, and the inner surface of keynote basin step combines with the intimate of secondary sound basin step; The top of the top inner surface of said secondary sound basin step and U type conductive magnetic yoke keeps certain distance, and the periphery wall of the internal perisporium of said secondary sound basin step and U type conductive magnetic yoke cylindrical shell keeps certain distance.
Further improvement as the utility model; Said secondary sound basin step center has slave station rank centre bore; Said keynote basin step center has main step centre bore, and said voice coil loudspeaker voice coil comprises coaxial voice coil loudspeaker voice coil coil and speech coil framework, and 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, is fitted with dust cap at the top of speech coil framework.
As the further improvement of the utility model, the top of said speech coil framework is not higher than the top peak of keynote basin ring, said dust cap upper surface and keynote basin ring the top peak maintain an equal level.
As the further improvement of the utility model, said secondary sound basin edge is supported on the locating support, and the inner edge at secondary sound basin edge extends to its center position, at first is recessed to form the secondary sound basin ring of a circle; The inner edge of said secondary sound basin ring continues to form secondary sound basin body to its center position horizontal-extending certain distance, and the center of secondary sound basin body is secondary sound basin mesopore; Said secondary sound basin body upper surface raise up and extend certain altitude after extend a segment distance to center position again, form described secondary sound basin step.Further, the cross section of said secondary sound basin ring is a circular arc.
As the further improvement of the utility model, said keynote basin edge is supported on the basin frame edge, and the inner edge at keynote basin edge extends to its center position, at first is recessed to form a circle keynote basin ring; The inner edge of said keynote basin ring continues to the oblique certain distance that extends below of its center position, forms keynote basin body, and the center of keynote basin body is a keynote basin mesopore; Said keynote basin body upper surface raise up and extend certain altitude after extend a segment distance to center position again, form described keynote basin step.Further, the cross section of said keynote basin ring is a circular arc.
As the further improvement of the utility model, said secondary sound basin step lower surface should be not less than the distance of voice coil loudspeaker voice coil bottom lower surface to U type conductive magnetic yoke bottom interior surface to the distance at U type conductive magnetic yoke top.
As the further improvement of the utility model, said locating support perisporium is provided with thermovent.
As the further improvement of the utility model, said basin frame bottom centre has basin frame mesopore, and the lower surface center, bottom of U type conductive magnetic yoke is provided with outer lug boss, and this outer lug boss is combined closely in said basin frame mesopore with interference fit.
The utility model compared with prior art, advantage is: ingenious, the compact and reasonable of structure, through keynote basin step is set on the keynote basin; Secondary sound basin step is set on secondary sound basin, and it is big when reducing loud speaker thickness, to have overcome the loudspeaker voice coil heating, the shortcoming of compliance difference; Both realize the structure slimming, kept the U type conductive magnetic yoke in the magnetic structure again, improved the uniformity of Distribution of Magnetic Field; The BL value and the characteristic ssensitivity of loud speaker have been improved; Reduce resonance frequency, improved the bass response characteristic, strengthened the reliability and the tonequality of loud speaker.
Description of drawings
Fig. 1 is the three-dimensional decomposition texture sketch map of the utility model embodiment.
Fig. 2 is the structure sectional arrangement drawing of the utility model embodiment.
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; The 2-locating support; The 2a-thermovent; 3-U type conductive magnetic yoke; The 3a-cylindrical shell; The 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; The 5-magnet; The 6-magnetic pole core; The 7-voice coil loudspeaker voice coil; 7a-voice coil loudspeaker voice coil coil; The 7b-speech coil framework; 8-keynote basin; 8a-keynote basin body; 8b-keynote basin ring; 8c-keynote basin step; 8d-keynote basin mesopore; 8e-master's step centre bore; The 9-dust cap.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
As shown in the figure, the dual-sound basin thin speaker with ledge structure among the embodiment mainly is made up of basin frame 1, locating support 2, U type 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.
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 an indent, and U type conductive magnetic yoke 3 is arranged in the basin shape chamber of basin frame 1; Said basin frame 1 bottom centre has basin frame mesopore 1b, and the lower surface center, bottom of U type conductive magnetic yoke 3 is provided with outer lug boss 3b, and this outer lug boss 3b combines closely in said basin frame mesopore 1b with interference fit; Said magnet 5, magnetic pole core 6 and voice coil loudspeaker voice coil 7 are arranged in the U type conductive magnetic yoke 3, and magnet 5 bottoms and U type 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, leaves the gap between voice coil loudspeaker voice coil 7 internal perisporiums and magnet 5 and magnetic pole core 6 periphery walls, leaves the gap between voice coil loudspeaker voice coil 7 periphery walls and U type conductive magnetic yoke 3 internal perisporiums.
Like Fig. 1 ~ shown in Figure 3, said locating support 2 is arranged on the periphery of U type conductive magnetic yoke 3, and locating support 2 is combined closely on basin frame 1 bottom interior surface, and locating support 2 perisporiums are provided with four 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, said secondary sound basin 4 is contained in the basin frame 1, and secondary sound basin 4 is arranged on U type conductive magnetic yoke 3 peripheries, and the edge of secondary sound basin 4 is supported on the locating support 2, and secondary sound basin 4 centers have secondary sound basin mesopore 4d; The inner edge at said secondary sound basin 4 edges extends to its center position, at first is recessed to form the secondary sound basin ring 4b of a circle, and circular arc preferably is arranged in the cross section of this pair sound basin ring 4b; The inner edge of said secondary sound basin ring 4b continues to form secondary sound basin body 4a to its center position horizontal-extending certain distance, and the center of secondary sound basin body 4a is secondary sound basin mesopore 4d; Said secondary sound basin body 4a upper surface raise up and extend certain altitude after extend a segment distance to center position again, form described secondary sound basin step 4c, have slave station rank centre bore 4e at the center of secondary sound basin step 4c.
Like Fig. 1 ~ shown in Figure 3, said keynote basin 8 is positioned at secondary sound basin 4 tops, and the edge of keynote basin 8 is supported on the basin frame edge 1a, and keynote basin 8 centers have keynote basin mesopore 8d; The inner edge at said keynote basin 8 edges extends to its center position, at first is recessed to form a circle keynote basin ring 8b, and circular arc preferably is arranged in the cross section of this keynote basin ring 8b; The inner edge of said keynote basin ring 8b continues to the oblique certain distance that extends below of its center position, forms keynote basin body 8a, and the center of keynote basin body 8a is keynote basin mesopore 8d; Said keynote basin body 8a upper surface raise up and extend certain altitude after extend a segment distance to center position again, form described keynote basin step 8c, have main step centre bore 8e at keynote basin step 8c center.
During assembling, as shown in Figure 2, the secondary sound basin step 4c at the center of said secondary sound basin 4 is upward through keynote basin mesopore 8d, and the inner surface of keynote basin step 8c combines with the intimate of secondary sound basin step 4c; The top inner surface of said secondary sound basin step 4c and the top of U type conductive magnetic yoke 3 keep certain distance, and the periphery wall of the internal perisporium of said secondary sound basin step 4c and U type conductive magnetic yoke 3 cylindrical shell 3a keeps certain distance.
Like Fig. 1 ~ shown in Figure 3; Said voice coil loudspeaker voice coil 7 mainly is made up 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; Be fitted with dust cap 9 at the top of speech coil framework 7b, dust cap 9 upper surfaces and keynote basin ring 8b the top peak maintain an equal level.
Like Fig. 1 ~ shown in Figure 3, under obstructed signal condition, said secondary sound basin step 4c lower surface should be not less than the distance of voice coil loudspeaker voice coil 7 bottom lower surfaces to U type conductive magnetic yoke 3 bottom interior surfaces to the distance at U type conductive magnetic yoke 3 tops.Like this, when voice coil loudspeaker voice coil 7 energisings and axially reciprocating, can avoid secondary sound basin step 4c to touch U type conductive magnetic yoke 3; Thereby guarantee the position of voice coil loudspeaker voice coil 7 in U type conductive magnetic yoke 3, magnet 5 and magnetic pole core 6 formed magnetic circuit gaps; 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 the said secondary sound basin 4, the keynote basin ring 8b on the keynote basin 8 all adopt 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.
Claims (10)
1. the dual-sound basin thin speaker that has ledge structure; Comprise basin frame (1), locating support (2), U type conductive magnetic yoke (3), magnet (5), magnetic pole core (6), voice coil loudspeaker voice coil (7) and keynote basin (8); Said basin frame (1) has the basin shape chamber of an indent, and U type conductive magnetic yoke (3) is fixed in the basin shape chamber of basin frame (1); Said secondary sound basin (4) is arranged on U type conductive magnetic yoke (3) periphery; The edge of secondary sound basin (4) is supported on the locating support (2); 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); Said keynote basin (8) is positioned at secondary sound basin (4) top, and the edge of keynote basin (8) is supported on the basin frame edge (1a), and keynote basin (8) center has keynote basin mesopore (8d); Said magnet (5), magnetic pole core (6) and voice coil loudspeaker voice coil (7) are arranged in the U type conductive magnetic yoke (3); Voice coil loudspeaker voice coil (7) is looped around magnet (5) and magnetic pole core (6) periphery; Leave the gap between voice coil loudspeaker voice coil (7) internal perisporium and magnet (5) and magnetic pole core (6) periphery wall, leave the gap between voice coil loudspeaker voice coil (7) periphery wall and U type conductive magnetic yoke (3) internal perisporium; It is characterized in that: the center of said secondary sound basin (4) is provided with secondary sound basin step (4c), and secondary sound basin step (4c) is upward through keynote basin mesopore (8d); Said keynote basin (8) center is provided with keynote basin step (8c), and the inner surface of keynote basin step (8c) combines with the intimate of secondary sound basin step (4c); The top of the top inner surface of said secondary sound basin step (4c) and U type conductive magnetic yoke (3) keeps certain distance, and the periphery wall of the internal perisporium of said secondary sound basin step (4c) and U type conductive magnetic yoke (3) cylindrical shell (3a) keeps certain distance.
2. the dual-sound basin thin speaker with ledge structure as claimed in claim 1; It is characterized in that: said secondary sound basin step (4c) center has slave station rank centre bores (4e); Said keynote basin step (8c) center has main step centre bore (8e); Said 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), and 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), is fitted with dust cap (9) at the top of speech coil framework (7b).
3. dual-sound basin thin speaker as claimed in claim 2; It is characterized in that: the top of said speech coil framework (7b) is not higher than the top peak of keynote basin ring (8b), said dust cap (9) upper surface and keynote basin ring (8b) the top peak maintain an equal level.
4. the dual-sound basin thin speaker with ledge structure as claimed in claim 1; It is characterized in that: said secondary sound basin (4) edge is supported on the locating support (2); The inner edge at secondary sound basin (4) edge extends to its center position, at first is recessed to form a circle secondary sound basin ring (4b); The inner edge of said secondary sound basin ring (4b) continues to form secondary sound basin body (4a) to its center position horizontal-extending certain distance, and the center of secondary sound basin body (4a) is a secondary sound basin mesopore (4d); Said secondary sound basin body (4a) upper surface raise up and extend certain altitude after extend a segment distance to center position again, form described secondary sound basin step (4c).
5. the dual-sound basin thin speaker with ledge structure as claimed in claim 4 is characterized in that: the cross section of said secondary sound basin ring (4b) is a circular arc.
6. the dual-sound basin thin speaker with ledge structure as claimed in claim 1; It is characterized in that: said keynote basin (8) edge is supported on the basin frame edge (1a); The inner edge at keynote basin (8) edge extends to its center position, at first is recessed to form a circle keynote basin ring (8b); The inner edge of said keynote basin ring (8b) continues to form keynote basin body (8a) to the oblique certain distance that extends below of its center position, and the center of keynote basin body (8a) is a keynote basin mesopore (8d); Said keynote basin body (8a) upper surface raise up and extend certain altitude after extend a segment distance to center position again, form described keynote basin step (8c).
7. the dual-sound basin thin speaker with ledge structure as claimed in claim 6 is characterized in that: the cross section of said keynote basin ring (8b) is a circular arc.
8. the dual-sound basin thin speaker with ledge structure as claimed in claim 1; It is characterized in that: said secondary sound basin step (4c) lower surface should be not less than the distance of voice coil loudspeaker voice coil (7) bottom lower surface to U type conductive magnetic yoke (3) bottom interior surface to the distance at U type conductive magnetic yoke (3) top.
9. the dual-sound basin thin speaker with ledge structure as claimed in claim 1 is characterized in that: said locating support (2) perisporium is provided with thermovent (2a).
10. the dual-sound basin thin speaker with ledge structure as claimed in claim 1; It is characterized in that: said basin frame (1) bottom centre has basin frame mesopore (1b); The lower surface center, bottom of U type conductive magnetic yoke (3) is provided with outer lug boss (3b), and this outer lug boss (3b) is combined closely in said basin frame mesopore (1b) with interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120202912 CN202103833U (en) | 2011-06-16 | 2011-06-16 | Double-cone thin type loudspeaker possessing step structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120202912 CN202103833U (en) | 2011-06-16 | 2011-06-16 | Double-cone thin type loudspeaker possessing step structure |
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| Publication Number | Publication Date |
|---|---|
| CN202103833U true CN202103833U (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120202912 Expired - Fee Related CN202103833U (en) | 2011-06-16 | 2011-06-16 | Double-cone thin type loudspeaker possessing step structure |
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| Country | Link |
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| CN (1) | CN202103833U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291651A (en) * | 2011-06-16 | 2011-12-21 | 无锡杰夫电声有限公司 | Dual-cone thin loudspeaker with step structure |
| CN102572640A (en) * | 2012-01-10 | 2012-07-11 | 无锡杰夫电声有限公司 | Structure of cone corrugated rim and cone frame of loudspeaker |
-
2011
- 2011-06-16 CN CN 201120202912 patent/CN202103833U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291651A (en) * | 2011-06-16 | 2011-12-21 | 无锡杰夫电声有限公司 | Dual-cone thin loudspeaker with step structure |
| 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 |
| CN102572640A (en) * | 2012-01-10 | 2012-07-11 | 无锡杰夫电声有限公司 | Structure of cone corrugated rim and cone frame of loudspeaker |
| CN102572640B (en) * | 2012-01-10 | 2015-01-14 | 无锡杰夫电声有限公司 | Structure of cone corrugated rim and cone frame of loudspeaker |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
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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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20200616 |
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| CF01 | Termination of patent right due to non-payment of annual fee |