CN201571197U - Thin electrodynamic loudspeaker - Google Patents
Thin electrodynamic loudspeaker Download PDFInfo
- Publication number
- CN201571197U CN201571197U CN 200920352051 CN200920352051U CN201571197U CN 201571197 U CN201571197 U CN 201571197U CN 200920352051 CN200920352051 CN 200920352051 CN 200920352051 U CN200920352051 U CN 200920352051U CN 201571197 U CN201571197 U CN 201571197U
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- Prior art keywords
- voice coil
- basin
- branch slice
- locating branch
- sound basin
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Abstract
The utility model relates to a thin electrodynamic loudspeaker. The loudspeaker comprises a basin frame, a magnetic circuit structure arranged in the basin frame, a positioning branch sheet and a cone; and the basin frame is provided with a wiring plate. The thin electrodynamic loudspeaker is characterized in that the magnetic circuit structure comprises a U-shaped magnetism-conducting yoke, a magnet, a magnetic pole core and a voice coil; the U-shaped magnetism-conducting yoke is arranged in the basin frame; the external surface on the bottom of the magnetism-conducting yoke is tightly combined with the upper surface on the bottom of the basin frame; the magnet and the magnetic pole core are arranged in the U-shaped magnetism-conducting yoke; the lower surface of the magnet is tightly combined with the internal surface on the bottom of the U-shaped magnetism-conducting yoke; the upper surface of the magnet is tightly combined with the magnetic pole core; the voice ring surrounds around the magnet and the magnetic pole core; a clearance is arranged between the internal wall of the voice ring and the external wall of the magnet and the magnetic pole core; and a clearance is also arranged between the external wall of the voice ring and the internal wall of the U-shaped magnetism-conducting yoke. In the utility model, the thin electrodynamic loudspeaker has smart, compact and reasonable structure, optimizes the thickness and does not reduce the magnetic flux and the BL value simultaneously, does not generate excessively large heat energy and ensures the acoustic properties and reliability of the loudspeaker.
Description
Technical field
The utility model belongs to the electroacoustic techniques field, relates to a kind of loud speaker, specifically a kind of thin type electrodynamic loudspeaker.
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, center at infundibulate sound basin offers centre bore, 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, 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; And conventional magnetic structure generally is with the magnet centering, is the conductive magnetic yoke (also claiming U iron) of U type around the magnet around a section, and voice coil loudspeaker voice coil places between magnet and the conductive magnetic yoke, and U type conductive magnetic yoke is arranged on the outer surface of basin frame bottom surface.In order further to optimize the thickness of loud speaker, the loud speaker that also has adopts the airtight basin frame in bottom, has directly dispensed conductive magnetic yoke, has simplified magnetic structure.But this open magnetic structure that removes conductive magnetic yoke exists Distribution of Magnetic Field inhomogeneous, the too fast defective of decay on both sides, forward magnetic field, use the loudspeaker distortions of this magnetic structure bigger, leakage field is also relatively more serious, and the voice coil loudspeaker voice coil coil sections makes voice coil loudspeaker voice coil negative impedance effect strengthen entering the zone, opposing magnetic field, cause the voice coil loudspeaker voice coil electric current excessive, voice coil loudspeaker voice coil generates heat easily, influences the reliability of speaker operation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide that a kind of structure is ingenious, the thin type electrodynamic loudspeaker of compact and reasonable, this loud speaker does not reduce magnetic flux and BL value again in thickness optimization, can not guarantee the acoustic performance and the reliability of loud speaker because of voice coil loudspeaker voice coil cutting magnetic line in alternating magnetic field produces excessive heat energy yet.
The technical scheme that provides according to the utility model, described thin type electrodynamic loudspeaker comprises basin frame with basin shape chamber, is installed in magnetic structure, locating branch slice and sound basin in the basin frame, magnetic structure is combined closely on basin frame bottom interior surface, magnetic structure top installing and locating is propped up sheet, and the sound basin is installed in the locating branch slice top; On the basin frame terminal block is installed, it is characterized in that: described magnetic structure includes U type conductive magnetic yoke, magnet, magnetic pole core and voice coil loudspeaker voice coil, and U type conductive magnetic yoke is arranged in the basin frame, and U type conductive magnetic yoke bottom outer surface and basin frame upper base surface are combined closely; In magnet and the magnetic pole core dress U type conductive magnetic yoke, magnet lower surface and U type conductive magnetic yoke bottom interior surface are combined closely, the magnet upper surface magnetic pole core of combining closely; Voice coil loudspeaker voice coil is looped around around magnet and the magnetic pole core, and the outer wall of the inwall of voice coil loudspeaker voice coil and magnet and magnetic pole core leaves the gap, and the inwall of the outer wall of voice coil loudspeaker voice coil and U type conductive magnetic yoke leaves the space equally.
As further improvement of the utility model, the center of described basin frame bottom is provided with cylindrical bump upwards, is provided with through hole in the center of U type conductive magnetic yoke, the corresponding assembling with cylindrical bump of through hole.
As further improvement of the utility model, the middle part of the basin shape chamber wall of described basin frame is provided with a circle step, and the step of the lower surface at locating branch slice edge and basin frame is combined closely; The locating branch slice center is provided with the locating branch slice mesopore, and the locating branch slice mesopore is run through in the upper end of the voice coil loudspeaker voice coil in the magnetic structure, and the inwall of locating branch slice mesopore and the outer wall of voice coil loudspeaker voice coil are combined closely; The lower surface at described sound basin edge and the upper surface at basin frame edge are combined closely; Sound basin center is provided with sound basin mesopore, and sound basin mesopore is run through in the upper end of the voice coil loudspeaker voice coil in the magnetic structure, and the inwall of sound basin mesopore and the outer wall of voice coil loudspeaker voice coil are combined closely.
As further improvement of the utility model, described locating branch slice edge rises and falls to center position and extends, form a wavy curved surface, a concave surface of the inner ring of wavy curved surface vertically extends upward, form the locating branch slice facade of a tubular, the top level of locating branch slice facade extends internally, and forms the locating branch slice plane of an annular, and the center on locating branch slice plane is the locating branch slice mesopore; Locating branch slice facade and locating branch slice plane constitute one can ccontaining magnetic structure circular cylinder, magnetic structure is contained in this circular cylinder, the outer wall of U type conductive magnetic yoke and the inwall of locating branch slice facade have certain interval, and the top of U type conductive magnetic yoke and the lower surface on locating branch slice plane have certain interval; Described sound basin edge extends to its center position, at first be recessed to form a semicircular ring, the inner ring of ring is to the oblique extension down of center position, form a funnel shaped sound basin body, the inner ring of sound basin body vertically extends upward, and forms the sound basin facade of a tubular, and the top level of sound basin facade extends internally, form the sound basin plane of an annular, the center on sound basin plane is a sound basin mesopore; Sound basin facade and sound basin plane constitute one can ccontaining locating branch slice facade circular cylinder, the inwall of sound basin facade and the outer wall of locating branch slice facade are combined closely, the lower surface and the locating branch slice planar upper surface on sound basin plane are combined closely.
As further improvement of the utility model, the center of described sound basin is provided with dust cap.
As further improvement of the utility model, described locating branch slice adopts thin thickness, Strong degree height, good springiness, tear resistance and the good material of resistance to abrasion to make; The preferred aromatic polyamide fibre that adopts is made.
As further improvement of the utility model, described dust cap is provided with at least one concentric ring.
The utility model compared with prior art, advantage is: ingenious, the compact and reasonable of structure, by changing the mutual alignment of U type conductive magnetic yoke and locating branch slice, optimized magnetic structure, it is big to have overcome the loudspeaker voice coil heating when reducing loud speaker thickness, and the big shortcoming of work distortion has not only realized the structure slimming but also do not reduce magnetic flux, do not reduce the BL value, strengthened the reliability of loud speaker.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a perspective exploded view of the present utility model.
Fig. 3 is basin frame, U type conductive magnetic yoke, magnet, magnetic pole core and the voice coil loudspeaker voice coil three-dimensional cutaway view in conjunction with situation.
Fig. 4 is voice coil loudspeaker voice coil, locating branch slice, sound basin and the dust cap three-dimensional cutaway view in conjunction with situation.
Fig. 5 is the structural representation of locating branch slice in the utility model.
Fig. 6 is the structural representation of the utility model middle pitch basin.
Description of reference numerals: 1-basin frame, 1a-basin frame edge, the 1b-connecting hole, 1c-basin pallet rank, the 1d-cylindrical bump, 2-U type conductive magnetic yoke, the 2a-through hole, the 3-magnet, the 4-magnetic pole core, the 5-voice coil loudspeaker voice coil, the 6-dust cap, the 6a-concentric ring, the 7-locating branch slice, 7a-locating branch slice edge, the wavy curved surface of 7b-, 7c-locating branch slice facade, 7d-locating branch slice plane, 7e-locating branch slice mesopore, 8-sound basin, 8a-sound basin edge, the 8b-ring, 8c-sound basin body, 8d-sound basin facade, 8e-sound basin plane, 8f-sound basin mesopore, the 9-terminal block.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure, the utility model mainly is made up of basin frame 1, U type conductive magnetic yoke 2, magnet 3, magnetic pole core 4, voice coil loudspeaker voice coil 5, dust cap 6, locating branch slice 7, sound basin 8 and terminal block 9.
As Fig. 1～shown in Figure 3, the periphery of basin frame 1 is basin frame edge 1a, and basin frame edge 1a inwardly has the basin shape chamber of a depression, and basin shape chamber wall is provided with the connecting hole 1b that is used to install terminal block, and terminal block 9 is installed on the basin frame 1; The middle part of basin shape chamber wall is provided with a circle step 1c, and the center of basin frame 1 bottom is provided with cylindrical bump 1d upwards.
As Fig. 1～shown in Figure 3, U type conductive magnetic yoke 2 sections are the U type, and it is arranged in the basin frame 1, and U type conductive magnetic yoke 2 bottom outer surfaces and basin frame 1 upper base surface are combined closely; Center in U type conductive magnetic yoke 2 is provided with through hole 2a, and the corresponding assembling of cylindrical bump 1d of through hole 2a and basin frame 1 bottom is to reinforce combining of U type conductive magnetic yoke 2 and basin frame 1.
As Fig. 1～shown in Figure 3, in magnet 3 and the magnetic pole core 4 dress U type conductive magnetic yoke 2, magnet 3 lower surfaces and U type conductive magnetic yoke 2 bottom interior surfaces are combined closely, the magnet 3 upper surfaces magnetic pole core 4 of combining closely; Voice coil loudspeaker voice coil 5 is looped around around magnet 3 and the magnetic pole core 4, and the outer wall of the inwall of voice coil loudspeaker voice coil 5 and magnet 3 and magnetic pole core 4 leaves the gap, and the inwall of the outer wall of voice coil loudspeaker voice coil 5 and U type conductive magnetic yoke 2 leaves the space equally; U type conductive magnetic yoke 2, magnet 3, magnetic pole core 4 and voice coil loudspeaker voice coil 5 constitute the magnetic structure of loud speaker.
As Fig. 1, Fig. 2, Fig. 4, shown in Figure 5, locating branch slice 7 is contained in the basin frame 1, is positioned at the magnetic structure top, and the lower surface of locating branch slice edge 7a and the step 1c of basin frame 1 combine closely; Locating branch slice edge 7a rises and falls to center position and extends, form a wavy curved surface 7b, a concave surface of the inner ring of wavy curved surface 7b vertically extends upward, form the locating branch slice facade 7c of a tubular, the top level of locating branch slice facade 7c extends internally, form the locating branch slice plane 7d of an annular, the center of locating branch slice plane 7d is locating branch slice mesopore 7e; Locating branch slice facade 7c and locating branch slice plane 7d constitute one can ccontaining magnetic structure circular cylinder, magnetic structure is contained in this circular cylinder, the inwall of the outer wall of U type conductive magnetic yoke 2 and locating branch slice facade 7c has certain interval, the lower surface of the top of U type conductive magnetic yoke 2 and locating branch slice plane 7d has certain interval, locating branch slice mesopore 7e is run through in the upper end of the voice coil loudspeaker voice coil 5 in the magnetic structure, and the inwall of locating branch slice mesopore 7e and the outer wall of voice coil loudspeaker voice coil 5 are combined closely.
As Fig. 1, Fig. 2, Fig. 4, shown in Figure 8, sound basin 8 is contained in the basin frame 1, is positioned at locating branch slice 7 tops; The upper surface of the lower surface of sound basin edge 8a and basin frame edge 1a is combined closely, sound basin edge 8a extends to its center position, at first be recessed to form a semicircular ring 8b, the inner ring of ring 8b is to the oblique extension down of center position, form a funnel shaped sound basin body 8c, the inner ring of sound basin body 8c vertically extends upward, form the sound basin facade 8d of a tubular, the top level of sound basin facade 8d extends internally, form the sound basin plane 8e of an annular, the center of sound basin plane 8e is sound basin mesopore 8f; Sound basin facade 8d and sound basin plane 8e constitute one can ccontaining locating branch slice facade 7c circular cylinder, the inwall of sound basin facade 8d and the outer wall of locating branch slice facade 7c are combined closely, the upper surface of the lower surface of sound basin plane 8d and locating branch slice plane 7e is combined closely, sound basin mesopore 8f is run through in the upper end of the voice coil loudspeaker voice coil 5 in the magnetic structure, and the inwall of sound basin mesopore 8f and the outer wall of voice coil loudspeaker voice coil 5 are combined closely.The center of sound basin 8 is provided with dust cap 6, and dust cap 6 tightly is enclosed within on the circular cylinder at sound basin 8 middle parts, is used to prevent that extraneous dust, pollutant from entering in the loud speaker.
Described locating branch slice 7 adopts thin thickness, Strong degree height, good springiness, tear resistance and the good material of resistance to abrasion to make, and preferably adopts aromatic polyamide fibre, also can be composited by multiple material.
The design of described dust cap has several concentric rings 6a, and concentric ring 6a is used to strengthen the rigidity of dust cap 6, and self deformation of dust cap 6 prevents that it from influencing the sound property of loud speaker when reducing the vibration of loud speaker sounding.
Claims (8)
1. thin type electrodynamic loudspeaker, comprise basin frame (1), be installed in magnetic structure, locating branch slice (7) and sound basin (8) in the basin frame (1) with basin shape chamber, magnetic structure is combined closely on basin frame (1) bottom interior surface, magnetic structure top installing and locating is propped up sheet (7), and sound basin (8) is installed in locating branch slice (7) top; Terminal block (9) is installed on basin frame (1), it is characterized in that: described magnetic structure includes U type conductive magnetic yoke (2), magnet (3), magnetic pole core (4) and voice coil loudspeaker voice coil (5), U type conductive magnetic yoke (2) is arranged in the basin frame (1), and U type conductive magnetic yoke (2) bottom outer surface and basin frame (1) upper base surface are combined closely; In magnet (3) and magnetic pole core (4) the dress U type conductive magnetic yoke (2), magnet (3) lower surface and U type conductive magnetic yoke (2) bottom interior surface are combined closely, magnet (3) the upper surface magnetic pole core (4) of combining closely; Voice coil loudspeaker voice coil (5) is looped around magnet (3) and magnetic pole core (4) on every side, and the outer wall of the inwall of voice coil loudspeaker voice coil (5) and magnet (3) and magnetic pole core (4) leaves the gap, and the inwall of the outer wall of voice coil loudspeaker voice coil (5) and U type conductive magnetic yoke (2) leaves the space equally.
2. thin type electrodynamic loudspeaker as claimed in claim 1, its feature also is: the center of described basin frame (1) bottom is provided with cylindrical bump (1d) upwards, be provided with through hole (2a) in the center of U type conductive magnetic yoke (2), through hole (2a) and the corresponding assembling of cylindrical bump (1d).
3. thin type electrodynamic loudspeaker as claimed in claim 1, its feature also is:
The middle part of the basin shape chamber wall of described basin frame (1) is provided with a circle step (1c), and the step (1c) of the lower surface of locating branch slice edge (7a) and basin frame (1) is combined closely; Locating branch slice (7) center is provided with locating branch slice mesopore (7e), and locating branch slice mesopore (7e) is run through in the upper end of the voice coil loudspeaker voice coil in the magnetic structure (5), and the outer wall of the inwall of locating branch slice mesopore (7e) and voice coil loudspeaker voice coil (5) is combined closely;
The upper surface at the lower surface at described sound basin edge (8a) and basin frame edge (1a) is combined closely; Sound basin (8) center is provided with sound basin mesopore (8f), and sound basin mesopore (8f) is run through in the upper end of the voice coil loudspeaker voice coil in the magnetic structure (5), and the outer wall of the inwall of sound basin mesopore (8f) and voice coil loudspeaker voice coil (5) is combined closely.
4. thin type electrodynamic loudspeaker as claimed in claim 3, its feature also is:
Described locating branch slice edge (7a) rises and falls to center position and extends, form a wavy curved surface (7b), a concave surface of the inner ring of wavy curved surface (7b) vertically extends upward, form the locating branch slice facade (7c) of a tubular, the top level of locating branch slice facade (7c) extends internally, form the locating branch slice plane (7d) of an annular, the center of locating branch slice plane (7d) is locating branch slice mesopore (7e); Locating branch slice facade (7c) and locating branch slice plane (7d) constitute one can ccontaining magnetic structure circular cylinder, magnetic structure is contained in this circular cylinder, the inwall of the outer wall of U type conductive magnetic yoke (2) and locating branch slice facade (7c) has certain interval, and the lower surface of the top of U type conductive magnetic yoke (2) and locating branch slice plane (7d) has certain interval;
Described sound basin edge (8a) extends to its center position, at first be recessed to form a semicircular ring (8b), the inner ring of ring (8b) is to the oblique extension down of center position, form a funnel shaped sound basin body (8c), the inner ring of sound basin body (8c) vertically extends upward, and forms the sound basin facade (8d) of a tubular, and the top level of sound basin facade (8d) extends internally, form the sound basin plane (8e) of an annular, the center on sound basin plane (8e) is a sound basin mesopore (8f); Sound basin facade (8d) and sound basin plane (8e) constitute one can ccontaining locating branch slice facade (7c) circular cylinder, the outer wall of the inwall of sound basin facade (8d) and locating branch slice facade (7c) is combined closely, and the upper surface of the lower surface on sound basin plane (8d) and locating branch slice plane (7e) is combined closely.
5. as each described thin type electrodynamic loudspeaker of claim 1～4, its feature also is: the center of described sound basin (8) is provided with dust cap (6).
6. as each described thin type electrodynamic loudspeaker of claim 1～4, its feature also is: described locating branch slice (7) adopts thin thickness, good material is made to infer height, good springiness, tear resistance and resistance to abrasion.
7. as each described thin type electrodynamic loudspeaker of claim 1～4, its feature also is: described locating branch slice (7) adopts aromatic polyamide fibre to make.
8. thin type electrodynamic loudspeaker as claimed in claim 5, its feature also is: described dust cap (6) is provided with at least one concentric ring (6a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920352051 CN201571197U (en) | 2009-12-24 | 2009-12-24 | Thin electrodynamic loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920352051 CN201571197U (en) | 2009-12-24 | 2009-12-24 | Thin electrodynamic loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201571197U true CN201571197U (en) | 2010-09-01 |
Family
ID=42663498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920352051 Expired - Fee Related CN201571197U (en) | 2009-12-24 | 2009-12-24 | Thin electrodynamic loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201571197U (en) |
Cited By (3)
| 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 |
| CN105635864A (en) * | 2014-10-31 | 2016-06-01 | 中国飞行试验研究院 | Piece-type microphone refitting adapter part and installation method therefor |
| CN109889949A (en) * | 2019-04-12 | 2019-06-14 | 无锡杰夫电声股份有限公司 | A kind of thin speaker of more suspension struts |
-
2009
- 2009-12-24 CN CN 200920352051 patent/CN201571197U/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN105635864A (en) * | 2014-10-31 | 2016-06-01 | 中国飞行试验研究院 | Piece-type microphone refitting adapter part and installation method therefor |
| CN109889949A (en) * | 2019-04-12 | 2019-06-14 | 无锡杰夫电声股份有限公司 | A kind of thin speaker of more suspension struts |
| CN109889949B (en) * | 2019-04-12 | 2024-01-05 | 无锡杰夫电声股份有限公司 | Thin loudspeaker with multiple suspension supports |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |