CN101227765A - Ultra-thin moving-coil type electro-acoustic conversing device - Google Patents
Ultra-thin moving-coil type electro-acoustic conversing device Download PDFInfo
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- CN101227765A CN101227765A CNA2008100139771A CN200810013977A CN101227765A CN 101227765 A CN101227765 A CN 101227765A CN A2008100139771 A CNA2008100139771 A CN A2008100139771A CN 200810013977 A CN200810013977 A CN 200810013977A CN 101227765 A CN101227765 A CN 101227765A
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Abstract
The invention discloses an ultra-thin moving coil type electron-phonon converter which comprises an external magnetic circuit device, a vibration device and a shell, wherein the external magnetic circuit device comprises a basin frame whose edge is flat and middle portion forms a convex area and is installed on a magnet on the flat edge of the basin frame and a wors which is superposed on the magnet, wherein a magnet gap is formed between the convex area on the middle portion of the basin frame and the magnet and the wors, the vibration device comprises a voice coil which is located in the magnet gap and a vibration film which is adhered with the voice coil, wherein the shell wraps and fixes the external magnetic circuit device, the edge of the vibration film is fixed the outer surface of the shell or the wors, a basin frame depression which is directed to the bottom of the basin frame is arranged on the convex area on the middle portion of the basin frame, a vibration film depression which is directed to the basin frame depression and is corresponded to the basin frame depression is arranged on the middle portion of the vibration film, the moving coil type electron-phonon converter with the structure greatly lowers the product size, increases the product power, and increases the product performance.
Description
Technical field
The present invention relates to a kind of novel electroacoustic transducer.
Background technology
In recent years, along with the develop rapidly in electronic product markets such as mobile phone, notebook computer, the moving-coil type electro-acoustic conversing device of cost performance excellence (generally comprising receiver and electroacoustic transducer) is widely used.Common moving-coil type electro-acoustic conversing device vibrating diaphragm design generally comprises edge part and middle part, its edge part is bonded on the shell, the middle part is provided with a projection up, this has just caused a kind of difficulty, be exactly shell and the magnetic circuit device part that the position of peak often obviously exceeds electroacoustic transducer in the middle part of the vibrating diaphragm, the Oscillation Amplitude at vibrating diaphragm middle part is bigger in the work of electroacoustic transducer, is restricted so caused the height of product to reduce, and the power of product also can't further improve.Yet electronic product is exactly thin typeization, high-power, dominance energy for the universal demand of electroacoustic transducer now, on original structure, can't realize these characteristics.So, be necessary to provide a kind of and can reduce product size significantly, increase product power, enhance product performance, and the ultra-thin moving-coil type electro-acoustic conversing device that can reduce production costs.
Summary of the invention
Technical problem to be solved by this invention provides a kind ofly can reduce product size significantly, increase product power, enhance product performance, and the ultra-thin moving-coil type electro-acoustic conversing device that can reduce production costs.
For solving the problems of the technologies described above, technical scheme of the present invention is: ultra-thin moving-coil type electro-acoustic conversing device, comprise external magnetic circuit device and vibrating device, and shell, wherein: described external magnetic circuit device comprises that smooth and middle part, edge forms the basin frame of projection, be installed in the magnet of described basin frame planar edge, overlay the washer on the described magnet, form magnetic gap between the middle part projection of described basin frame and described magnet and the washer; Described vibrating device comprises the voice coil loudspeaker voice coil that is positioned at described magnetic gap, the vibrating diaphragm that bonds together with described voice coil loudspeaker voice coil; Described shell parcel, fixing described external magnetic circuit device, the edge of described vibrating diaphragm is fixed on the outer surface of described shell or described washer; The middle part projection of described basin frame is provided with the basin frame depression towards described basin frame bottom, the middle part of described vibrating diaphragm be provided with towards described basin frame depression and with the described basin frame corresponding vibrating diaphragm depression that caves in.
A kind of improvement of the technical program is: the middle part projection of described basin frame is the projection of hollow, and the cavity of described projection has the opening towards described basin frame bottom outer surface.
As to further improvement in the technical proposal: described basin frame depression is for being arranged on the trapezoidal recess of described basin frame lug boss and upper big and bottom samll shape, and perhaps described basin frame depression caves in for being arranged on described basin frame lug boss circular arc.
As the further improvement to technique scheme: described basin frame recessed position is provided with and runs through the inside and outside hole of basin frame, and the described hole outside is equipped with damping device.
A kind of improvement of the technical program is: described basin frame depression is the hole that is arranged on described basin frame lug boss and runs through described basin frame, and described hole has the space that takes described vibrating diaphragm depression in.
As to further improvement in the technical proposal: a side or the both sides at described vibrating diaphragm middle part are provided with composite membrane.
As to further improvement in the technical proposal: described vibrating diaphragm edge is fixed on the described shell or the outer surface of described washer by a retainer ring.
As to further improvement in the technical proposal: described basin frame, magnet and washer are the strip structure, and it is right that the both sides of described basin frame lug boss are equipped with the magnet washer that magnet and washer form.
As to further improvement in the technical proposal: the flat shape of the profile of described ultra-thin moving-coil type electro-acoustic conversing device and described magnetic circuit device and corresponding described vibrating device is circular or microscler, and described basin frame, magnet and washer are loop configuration.
As to further improvement in the technical proposal: described vibrating diaphragm is level and smooth in the junction with voice coil loudspeaker voice coil.
Also comprise other parts such as a protecgulum that covers vibrating diaphragm and damping, pad, connector, dust proof member in the general moving-coil type electro-acoustic conversing device structure, the setting of this type of part and have or not the creativeness that does not influence this patent does not repeat them here.
Owing to adopted technique scheme, ultra-thin moving-coil type electro-acoustic conversing device, comprise external magnetic circuit device and vibrating device, and shell, wherein: described external magnetic circuit device comprises that smooth and middle part, edge forms the basin frame of projection, be installed in the magnet of described basin frame planar edge, overlay the washer on the described magnet, form magnetic gap between the middle part projection of described basin frame and described magnet and the washer; Described vibrating device comprises the voice coil loudspeaker voice coil that is positioned at described magnetic gap, the vibrating diaphragm that bonds together with described voice coil loudspeaker voice coil; Described shell parcel, fixing described external magnetic circuit device, the edge of described vibrating diaphragm is fixed on the outer surface of described shell or described washer; The middle part projection of described basin frame is provided with the basin frame depression towards described basin frame bottom, the middle part of described vibrating diaphragm be provided with towards described basin frame depression and with the described basin frame corresponding vibrating diaphragm depression that caves in; The moving-coil type electro-acoustic conversing device product size of this structure reduces significantly, product power increases, properties of product improve.
Description of drawings
Fig. 1 is the structural representation of the invention process case one;
Fig. 2 is the structural representation of the invention process case two;
Fig. 3 is the magnetic circuit part schematic top plan view of the invention process case two;
Fig. 4 is the structural representation of the invention process case three;
Fig. 5 is the structural representation of the invention process case four electroacoustic transducer oscillating components.
Embodiment
Embodiment one: the structural representation that is the invention process case one as shown in Figure 1, in the implementation case, a kind of ultra-thin electroacoustic transducer, comprise successively by a circular basin frame 101, the magnetic circuit device that annular magnet 102 and annular washer 103 are formed, has the edge flat bottom on the basin frame 101 in order to place magnet 102 and washer 103, the lug boss 101a inner and that extend towards magnet 102 and washer 103 1 sides at magnet 102 and washer 103, be provided with basin frame depression 101b towards basin frame 101 bottoms in lug boss 101a inside, the trapezoidal recess that is shaped as upper big and bottom samll shape of basin frame depression 101b, thereby magnet 102, washer 103 and lug boss 101a have formed the magnetic gap of an annular; Comprise a plastic casing 104, magnetic circuit device is fixed together; Comprise a vibrating diaphragm 105, vibrating diaphragm 105 comprises an edge part 105a and middle part 105b, the below of edge part 105a and middle part 105b binding site 105c is equipped with voice coil loudspeaker voice coil 106, voice coil loudspeaker voice coil 106 is in the annular magnetic gap, thereby vibrating diaphragm 105 and voice coil loudspeaker voice coil 106 have formed the vibrating device of ultra-thin electroacoustic transducer; The edge of vibrating diaphragm edge part 105a is bonded in the edge of washer 103 in advance; The middle part 105b of described vibrating diaphragm is provided with towards described basin frame depression 101b and with the corresponding vibrating diaphragm of described basin frame depression 101b and caves in.
This ultra-thin electroacoustic transducer, adopt the external magnetic circuit structure, the basin frame medial recess that adopts, and concave design is also adopted in the vibrating diaphragm center of correspondence position, can reduce the product height significantly, and do not sacrifice the magnet volume, product size reduces significantly, product power increases also can be so that Fo (lowest resonant frequency) reduces, the high frequency expansion.Simultaneously, this constructed products adopts part less, and the installation of each part do not need extra positioning tool, can realize automated production, vibrating diaphragm and washer in conjunction with the mode that reinstalls electroacoustic transducer, also make the assembling of electroacoustic transducer be more prone in advance.
Embodiment two: be the structural representation of the invention process case two as shown in Figure 2, Fig. 3 is the magnetic circuit part schematic top plan view of the invention process case two.The implementation case and case study on implementation one mainly contain following some difference: 1. the profile of ultra-thin electroacoustic transducer is microscler, thereby corresponding magnetic structure also is a strip, and two strip magnet 102, washers 103 are distributed in the both sides of basin frame 101; 2. the inside part of basin frame 101 101a of projected side wall portion excision, in be formed centrally a hole, thereby basin frame 101 has been divided into left and right sides two parts, becomes two L shaped strip basin framves; 3. on the basin frame and the position of magnetic gap correspondence is provided with the aperture 101c of a plurality of symmetrical distributions.
This structure Design has met present rectangular profile, the increasing electroacoustic transducer structural design of microscler magnetic structure; Hole that basin frame middle part forms and aperture 101c can be used as sound hole, back and are used for sounding and keep the electroacoustic transducer inside and outside air pressure balance, and can be used to distribute the heat that the electroacoustic transducer long-term work produces, and the position of aperture and shape symmetrical distribution can be so that the magnetic line of force symmetries of magnetic circuit device.
Embodiment three: be the structural representation of the invention process case three as Fig. 4, the implementation case and case study on implementation one mainly contain following some difference: thereby 1, the basin frame of basin frame 101 depression 101b portion is partly excised forms hole 101d, the outside of hole 101d is equipped with damping 108; 2, vibrating diaphragm 105 edge's predetermined fixed are connected on the copper ring 107, utilize copper ring 107 to be fixed on the washer 103; 3, the junction 105c of vibrating diaphragm edge part 105a and middle part 105b adopts sawtooth design.
This structure Design, the hole 101d that basin frame middle part forms can be used as sound hole, back and is used for sounding and keeps the electroacoustic transducer inside and outside air pressure balance, and can be used to distribute the heat that the electroacoustic transducer long-term work produces, the damping 108 that install in the outside of hole 101d can be regulated properties of product, adjust distortion etc. by the difference of regulating its thickness, the vibrating diaphragm edge utilizes a copper ring fixedly connected, can improve the height at vibrating diaphragm edge, further reduce the possibility of vibrating diaphragm edge part collision magnetic circuit device, the junction employing sawtooth design at vibrating diaphragm edge part and middle part can be so that the adhesive surface of voice coil loudspeaker voice coil and vibrating diaphragm be more parallel, bond area is bigger, and the sawtooth design of vibrating diaphragm integral part also makes the making of vibrating diaphragm also be more prone to.
Embodiment four: as Fig. 5 is the structural representation of the invention process case four electroacoustic transducer oscillating components, and the implementation case and case study on implementation one main distinction are on the depressed part 105b at vibrating diaphragm middle part multilayer complex films 105d to be set.The increase of composite membrane 105d can be so that vibrating diaphragm various piece vibration frequency difference, and electroacoustic transducer Fo (lowest resonant frequency) further reduces, and tonequality is further improved.Composite membrane generally adopts one deck aluminium foil or plastic material to make, and its material can be consistent with diaphragm materials, also can be inconsistent, mainly suitably adjust according to different tonequality needs; Simultaneously, composite membrane can be arranged on top or the following or two sides of vibrating diaphragm, and one or more layers can be set; Generally when vibrating diaphragm is made moulding, simultaneously composite membrane is wholely set on vibrating diaphragm.
The present invention compares existing ultrathin electroacoustic transducer design, can the decrease product size, increase Product power, and enhance product performance, can reduce production costs, be convenient to simultaneously the reality of automated production Existing.
Claims (10)
1. ultra-thin moving-coil type electro-acoustic conversing device, comprise external magnetic circuit device and vibrating device, and shell, it is characterized in that: described external magnetic circuit device comprises that smooth and middle part, edge forms the basin frame of projection, be installed in the magnet of described basin frame planar edge, overlay the washer on the described magnet, form magnetic gap between the middle part projection of described basin frame and described magnet and the washer; Described vibrating device comprises the voice coil loudspeaker voice coil that is positioned at described magnetic gap, the vibrating diaphragm that bonds together with described voice coil loudspeaker voice coil; Described shell parcel, fixing described external magnetic circuit device, the edge of described vibrating diaphragm is fixed on the outer surface of described shell or described washer; The middle part projection of described basin frame is provided with the basin frame depression towards described basin frame bottom, the middle part of described vibrating diaphragm be provided with towards described basin frame depression and with the described basin frame corresponding vibrating diaphragm depression that caves in.
2. ultra-thin moving-coil type electro-acoustic conversing device as claimed in claim 1 is characterized in that: the middle part projection of described basin frame is the projection of hollow, and the cavity of described projection has the opening towards described basin frame bottom outer surface.
3. ultra-thin moving-coil type electro-acoustic conversing device as claimed in claim 2 is characterized in that: described basin frame depression is for being arranged on the trapezoidal recess of described basin frame lug boss and upper big and bottom samll shape, and perhaps described basin frame depression is for being arranged on described basin frame lug boss circular arc depression.
4. ultra-thin moving-coil type electro-acoustic conversing device as claimed in claim 3 is characterized in that: described basin frame recessed position is provided with and runs through the inside and outside hole of basin frame, and the described hole outside is equipped with damping device.
5. ultra-thin moving-coil type electro-acoustic conversing device as claimed in claim 1 is characterized in that: described basin frame depression is the hole that is arranged on described basin frame lug boss and runs through described basin frame, and described hole has the space that takes described vibrating diaphragm depression in.
6. as claim 1,2,3,4 or 5 described ultra-thin moving-coil type electro-acoustic conversing devices, it is characterized in that: a side or the both sides at described vibrating diaphragm middle part are provided with composite membrane.
7. as claim 1,2,3,4 or 5 described ultra-thin moving-coil type electro-acoustic conversing devices, it is characterized in that: described vibrating diaphragm edge is fixed on the described shell or the outer surface of described washer by a retainer ring.
8. as claim 1,2,3,4 or 5 described ultra-thin moving-coil type electro-acoustic conversing devices, it is characterized in that: described basin frame, magnet and washer are the strip structure, and it is right that the both sides of described basin frame lug boss are equipped with the magnet washer of magnet and washer composition.
9. as claim 1,2,3,4 or 5 described ultra-thin moving-coil type electro-acoustic conversing devices, it is characterized in that: the flat shape of the profile of described ultra-thin moving-coil type electro-acoustic conversing device and described magnetic circuit device and corresponding described vibrating device is circular or microscler, and described basin frame, magnet and washer are loop configuration.
10. as claim 1,2,3,4 or 5 described ultra-thin moving-coil type electro-acoustic conversing devices, it is characterized in that: the junction of described vibrating diaphragm and voice coil loudspeaker voice coil is level and smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100139771A CN101227765B (en) | 2008-01-29 | 2008-01-29 | Ultra-thin moving-coil type electro-acoustic conversing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100139771A CN101227765B (en) | 2008-01-29 | 2008-01-29 | Ultra-thin moving-coil type electro-acoustic conversing device |
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| Publication Number | Publication Date |
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| CN101227765A true CN101227765A (en) | 2008-07-23 |
| CN101227765B CN101227765B (en) | 2012-07-04 |
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| CN2008100139771A Active CN101227765B (en) | 2008-01-29 | 2008-01-29 | Ultra-thin moving-coil type electro-acoustic conversing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052005A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Thinned vibrating diaphragm, preparation method for thinned vibrating diaphragm, and moving iron unit with thinned vibrating diaphragm |
| CN105050011A (en) * | 2015-08-07 | 2015-11-11 | 苏州博那德音响科技有限公司 | Annular electromagnetic exciter and loudspeaker thereof |
| CN105992110A (en) * | 2016-05-05 | 2016-10-05 | 歌尔股份有限公司 | Sound generating device and sound generating device module group |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3989856B2 (en) * | 2003-02-27 | 2007-10-10 | パイオニア株式会社 | Speaker device |
| CN2751498Y (en) * | 2004-11-25 | 2006-01-11 | 天津真美电声器材有限责任公司 | Ultra-thin loudspeaker |
| JP2007104541A (en) * | 2005-10-07 | 2007-04-19 | Hosiden Corp | Electric/acoustic transducer |
-
2008
- 2008-01-29 CN CN2008100139771A patent/CN101227765B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103052005A (en) * | 2012-12-25 | 2013-04-17 | 苏州恒听电子有限公司 | Thinned vibrating diaphragm, preparation method for thinned vibrating diaphragm, and moving iron unit with thinned vibrating diaphragm |
| CN103052005B (en) * | 2012-12-25 | 2016-08-17 | 苏州恒听电子有限公司 | Thinning type vibrating diaphragm and preparation method thereof and the dynamic iron unit with this thinning type vibrating diaphragm |
| CN105050011A (en) * | 2015-08-07 | 2015-11-11 | 苏州博那德音响科技有限公司 | Annular electromagnetic exciter and loudspeaker thereof |
| CN105992110A (en) * | 2016-05-05 | 2016-10-05 | 歌尔股份有限公司 | Sound generating device and sound generating device module group |
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| CN101227765B (en) | 2012-07-04 |
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