CN203279160U - Magnetomotive loudspeaker - Google Patents
Magnetomotive loudspeaker Download PDFInfo
- Publication number
- CN203279160U CN203279160U CN 201320290800 CN201320290800U CN203279160U CN 203279160 U CN203279160 U CN 203279160U CN 201320290800 CN201320290800 CN 201320290800 CN 201320290800 U CN201320290800 U CN 201320290800U CN 203279160 U CN203279160 U CN 203279160U
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- magnetic
- fixedly connected
- back cover
- loud speaker
- hollow fixed
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Abstract
The utility model discloses a magnetomotive loudspeaker which comprises a basin stand, a bottom-sealed diaphragm with the periphery being fixedly connected with the top end of the basin stand, a nonporous damper, a magnetic sound post, a hollow fixed coil, and a shielding and isolating cover disposed at the bottom of the basin stand, wherein the center of the bottom of the bottom-sealed diaphragm is fixedly connected with the center of the upper end face of the nonporous damper, and the center of the lower end face of the nonporous damper is fixedly connected with the magnetic sound post. The hollow fixed coil is fixedly disposed inside the shielding and isolating cover and located under the magnetic sound post. The magnetomotive loudspeaker which is made according to the technical scheme of the utility model is characterized by high sensitivity, good acoustic efficiency, high overload capacity, small loss of frequency, large dynamic range, wide frequency band, and the like. The manufactured loudspeaker is light in weight, saves a large amount of precious metals, reduces the sizes of equipment, reduces the failure rate of the equipment, is very economical, and promotes the development of telecommunication technology.
Description
Technical field
The utility model relates to the loudspeaker techniques field, particularly relates to the moving loud speaker of a kind of magnetic.
Background technology
Loud speaker claims again loudspeaker, is a kind of electric energy transducer spare, and it is by certain physical effect, the signal of telecommunication to be converted to the electro-acoustic transducer device of acoustical signal and medium radiation towards periphery, realizes the physical effect of electroacoustic conversion.No matter at playback system or in electric sound reinforcement system, it is all electricity finally to be reduced into the final tache of sound, is the Adam's apple of whole radiophonics system.
Coil-moving speaker, experienced very long developing history, for many years, its performance has obtained constantly improving and improving, become at present loud speaker the most widely, existing coil-moving speaker involving vibrations system and magnetic circuit system, wherein vibrational system comprises basin frame, vibrating diaphragm, voice coil loudspeaker voice coil, permanent magnet and centring disk.According to left hand rule, when passing through tone currents, voice coil loudspeaker voice coil produces magnetic field, the magnetic line of force of the intrinsic magnetic field of charged coil cutting permanent magnet, voice coil loudspeaker voice coil is beated, thereby drive vibrating diaphragm and do corresponding mechanical oscillation, and to aerial radiative acoustic wave, cause that medium produces fluctuation formation sound on every side, convert electric energy to mechanical kinetic energy, then convert acoustic energy to.
But the coil-moving speaker indices is imperfection still at present, wait to improve and improve its performance, as:
(1) magnetic flux density of the residing magnetic gap of voice coil loudspeaker voice coil and the uniformity have much room for improvement, and voice coil loudspeaker voice coil easily exceeds the effective range of intrinsic magnetic field when amplitude is larger, causes distortion.
(2) loud speaker in use because the temperature of voice coil loudspeaker voice coil raises, causes voice coil loudspeaker voice coil resistance to increase, and sensitivity is descended, and along with the lasting generation of heat, cause voice coil temperature sharply to rise, when reach the voice coil loudspeaker voice coil material bear the limit time, adhesive is aging, voice coil loudspeaker voice coil is loose or burnt.
(3) impedance is low, and broadcasting, fire-fighting all need the adapted line transformer with loud speaker, and the efficient of transformer is 80%, has seriously reduced the performance of loud speaker.
(4) the outside radiation field of magnet itself, if household electrical appliance such as audio amplifier and television set, computer and putting, the magnet of loud speaker can produce serious interference to the said equipment, affects the effect of listening to and watching, also can destroy the Magnetic Field of magnetic card.
(5) loud speaker has very high peak value near the frequency response curve its lowest resonant frequency (fo), shows as the vibrating diaphragm amplitude and causes distortion when excessive.
The utility model content
The purpose of this utility model is for the technological deficiency that exists in prior art, and provides a kind of high performance magnetic to move loud speaker.
For realizing that the technical scheme that the purpose of this utility model adopts is:
A kind of magnetic moves loud speaker, comprise the basin frame, the back cover vibrating diaphragm that periphery is fixedly connected with the top of basin frame, atresia bullet ripple, magnetic sound column, hollow fixed coil and the shielding cage that is arranged on basin frame bottom, wherein, the bottom center of described back cover vibrating diaphragm is fixedly connected with center, atresia bullet ripple upper surface, the center of atresia bullet ripple lower surface is fixedly connected with the magnetic sound column, and described hollow fixed coil is fixedly installed in the shielding cage and is positioned at below the magnetic sound column.
Described hollow fixed coil is fixedly connected with the shielding cage, and the cavity of described hollow fixed coil contains the bottom of magnetic sound column in it, and described magnetic sound column is cylinder, cylindrical shell, eel-like figure cylinder or eel-like figure body structure.
Described magnetic sound column is that cylindrical shell, eel-like figure cylindrical shell, bottom are formed with the cylinder of cavity or the eel-like figure column structure that the bottom is formed with cavity, and insert in the magnetic sound column upper end of described hollow fixed coil.
Described shielding cage bottom centre place offers centre bore, and the iron core that passes described centre bore from the bottom passes hollow fixed coil so that hollow fixed coil is fixedly connected with the shielding cage.
Be fixedly installed dust cover to avoid dust to enter inside in described back cover vibrating diaphragm end face center.
The cross sectional shape of described back cover vibrating diaphragm is anti-parabolic type, linear pattern or parabolic type.
Described back cover vibrating diaphragm comprises that described back cover is planar structure for the pressure ring, the ring that are fixedly connected with basin frame front opening edge and the back cover that is formed on back cover vibrating diaphragm centre bottom.
Described atresia bullet ripple is rounded, and its periphery is fixedly connected with the shallow basin frame of protected type, is formed with concentric a plurality of bullet ripple rings thereon.
The lead-in wire of described hollow fixed coil is drawn and is connected with terminal block from the pore of basin frame, and described terminal block is fixedly connected with the basin frame.
Compared with prior art, the beneficial effects of the utility model are:
The moving loud speaker of the magnetic that utilizes the technical solution of the utility model to make has highly sensitively, and phonation efficiency is good, and overload capacity is strong, and frequency loss is low, and dynamic range is large, the characteristics of bandwidth; Made product overall weight is light, saves a large amount of precious metals, adopts moving-magnetic type structural design stray magnetic field little, can make the high impedance product directly and transistor or field effect transistor coupling; Its application will make the broadcast communication equipment circuit greatly simplify, and save a large amount of components and parts, the volume of reduction equipment, and the failure rate of reduction equipment, good economy performance can drive the development of telecommunication technology.
Description of drawings
Fig. 1 is the structural representation of the moving loud speaker of magnetic of the utility model the first embodiment;
Fig. 2 is parabolic type back cover vibrating diaphragm cross section structure schematic diagram of the present utility model;
Fig. 3 is linear pattern back cover vibrating diaphragm cross section structure schematic diagram of the present utility model;
Fig. 4 is anti-parabolic type back cover vibrating diaphragm cross section structure schematic diagram of the present utility model;
Fig. 5 is the moving loadspeaker structure schematic diagram of the magnetic of the utility model the second embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in 1 figure, the moving loud speaker of the magnetic of the utility model the first embodiment comprises the shallow basin frame 1 of protected type, the back cover vibrating diaphragm 2 that periphery is fixedly connected with the top of the shallow basin frame 1 of protected type, atresia bullet ripple 3, magnetic sound column 4 and hollow fixed coil 5.Wherein, the bottom surface of described back cover vibrating diaphragm is fixedly connected with atresia bullet ripple 3 centers, upper surface, the center of atresia bullet ripple lower surface is fixedly connected with magnetic sound column 4, described hollow fixed coil 5 is fixedly installed in the shallow basin frame 1 of protected type and is positioned at below the magnetic sound column, the shallow basin frame of wherein said protected type is the integrative-structure that shallow basin frame and shielding cage 9 form, and described hollow fixed coil 5 contains the bottom of magnetic sound column in it.Simultaneously, be fixedly installed dust cover 6 to avoid dust to enter inside in described back cover vibrating diaphragm end face center.
Wherein, described back cover vibrating diaphragm 2 comprises for the pressure ring 10, the ring 9 that are fixedly connected with the shallow basin frame 1 front opening edge of protected type and the back cover 8 that is formed on back cover vibrating diaphragm centre bottom, described back cover is planar structure, be back cover vibrating diaphragm of the present utility model without centre bore and back cover plane directly with the splicing of atresia bullet ripple, such structural design can produce the effect of being obedient to of machinery, effectively controls resonance state, lowers the gap of the peak valley face of high pitch resonance, make the cycle characteristic smooth, transient characteristic is good.Also the back cover vibrating diaphragm is produced strengthening action simultaneously, reduce diaphagras.Can also reduce simultaneously the height of basin frame.As preferably, the cross sectional shape of back cover vibrating diaphragm of the present utility model can be anti-parabolic type, linear pattern and parabolic type, as shown in Fig. 2-4.
Described atresia bullet ripple 3 is rounded, and its periphery is fixedly connected with the shallow basin frame of protected type, is formed with concentric a plurality of bullet ripple rings thereon, and without centre bore, the corresponding bullet ripple number of rings order that increased has improved the range of linearity of displacement, has reduced non-linear due to atresia bullet ripple.Also simplify simultaneously the production technology that plays ripple, reduced the production cost that plays ripple.
Described magnetic sound column 4 is used permanent magnet, make as the Nd-Fe-B magnet, it is cylinder or tube structure, also can adopt thick middle eel-like figure cylinder or the eel-like figure tube structure with arc closing waist structure in two ends, the cross sectional shape that is described magnetic sound column adopts the I-shaped or I-shaped design of class, overcome the magnet steel volume of existing coil-moving speaker heaviness, reduced the impact of loud speaker self stray magnetic field on peripheral devices, stray magnetic field is little, can make the high impedance product directly and transistor or field effect transistor coupling; Its application will make the broadcast communication equipment circuit greatly simplify, and save a large amount of components and parts, the volume of reduction equipment, and the failure rate of reduction equipment, good economy performance can drive the development of telecommunication technology.Saved simultaneously a large amount of precious metals, further reduced costs.
Described hollow fixed coil 5 is exoskeletal tread flaking air core coil, and the maximum impedance value of described hollow fixed coil is 10K Ω; Because the space structure relation allows to strengthen wire diameter, can effectively prevent the voice coil loudspeaker voice coil heating and be burnt, delayed the aging of voice coil loudspeaker voice coil material and binding agent, bear power thereby obviously improve loud speaker, extended the useful life of loud speaker.
General loudspeaker voice coil lead-out wire is drawn through vibrating diaphragm, then arrives the terminal block of basin frame by external lead wire.Audio signal is connected with voice coil leads by lead-out wire.When work, lead-out wire is also done high-frequency, large-amplitude vibration with vibrational system.In case lead-out wire fractures, loud speaker has just been scrapped substantially.In addition, lead-out wire is drawn through vibrating diaphragm, certainly will vibrating diaphragm will be bored a hole, and welding, solder joint place gluing.Do so the degree of balance that all can destroy vibrating diaphragm, cause tonequality to degenerate.For overcoming the problems referred to above, what this aspect adopted is the fixed coil of wire diameter overstriking, and the lead-in wire of hollow fixed coil is drawn and is connected with terminal block from the pore of basin frame, has eliminated defects, also need not to add simultaneously cage, has simplified the structure of loud speaker.
as shown in Figure 5, the moving loud speaker of the magnetic of the second embodiment of the present utility model comprises the shallow basin frame 11 of protected type, the back cover vibrating diaphragm 12 that periphery is fixedly connected with the top of the shallow basin frame 11 of protected type, atresia bullet ripple 13, tubular magnetic sound column 14, and hollow fixed coil 15, wherein, the bottom surface of described back cover vibrating diaphragm is fixedly connected with atresia bullet ripple 13 centers, upper surface, the center of atresia bullet ripple lower surface is fixedly connected with magnetic sound column 14, described hollow fixed coil 15 is fixedly installed in the shallow basin frame 1 of protected type and is positioned at the upper end insertion tubular magnetic sound column 14 of magnetic sound column below and described hollow fixed coil 15, the shallow basin frame of wherein said protected type is the integrative-structure that shallow basin frame and shielding cage 19 form, the shallow basin frame of described protected type 1 bottom centre place offers centre bore, the iron core 18 that passes described centre bore from the bottom passes hollow fixed coil 15 so that it is fixedly connected with the shielding cage.
Certainly, the shape of magnetic sound column also can adopt the eel-like figure tubular construction, and perhaps only cylindricality or the eel-like figure column construction that allows hollow fixed coil upper end is inserted the cavity in it offered in the lower end.Adopt the air core coil built-in structure, energy is reduced volume further, the demand that adapts to the specific occasion, utilize iron core to strengthen the magnetic field of hollow fixed coil, improve acoustic sensitivity, utilize simultaneously core structure effectively to carry out the heat conduction cooling to hollow fixed coil, the heat that coil is produced is directed at the outside, prevents because overheated cause various bad.
Simultaneously, be fixedly installed dust cover to avoid dust to enter inside in described back cover vibrating diaphragm end face center.Other structures, as similar to the above embodiments in back cover vibrating diaphragm, atresia bullet ripple etc., no longer describe at this.
The operation principle of this device is: hollow fixed coil is by after tone currents, and the magnetic sound column utilizes the fixed magnetic field two like magnetic poles repel each other principle that there is a natural attraction between the sexes of alternating magnetic field that hollow fixed coil energising produces and magnetic sound column to drive the back cover vibrating diaphragm to vibrate and make the air sounding.Due to the supporting function of atresia bullet ripple, kept the rectilinear motion of back cover vibrating diaphragm.Do so the technical broadband electroacoustic conversion effect that can improve loud speaker.Utilize the damping action of atresia bullet ripple and back cover vibrating diaphragm to reduce and cut apart effect, loud speaker is bordering on smoothly at fo place frequency response curve, thereby has improved frequency response characteristic, the minimizing distortion is conducive to simplify the design of frequency divider circuit.
The magnetic sound column is cylinder or the tube structure made from magnetic material, the high performance magnetic sound column is connected to paper or metal vibrating diaphragm or plays on ripple, tap is arranged or be fixedly installed in the shielding cage that metal material makes without the coil of tap, different structure, different cross section according to column type or tubular magnetic sound column are equipped with different annuluses or cylindrical coil.Certainly can also make the concrete conversion of a lot of forms, such as horn loudspeaker, magnetic driven microphone, metal back cover vibrating diaphragm, metal atresia bullet ripple etc.
The characteristics of the technical program are to adopt the shallow basin shelf structure of protected type, nonmagnetic steel, without washer, without T iron, formed by the hollow fixed coil that is connected to the magnetic sound column on atresia bullet ripple and be fixedly installed in the shielding cage, the magnet steel volume external section that this structure has overcome existing coil-moving speaker heaviness causes the shortcoming of magnetic disturbance, has saved a large amount of precious metal materials.Optimize simultaneously the suitable control resonance state of geometry of back cover vibrating diaphragm, lower the gap of the peak valley face of high pitch resonance, make the cycle characteristic smooth, transient characteristic is good.
The above is only preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (9)
1. a magnetic moves loud speaker, it is characterized in that, comprise the basin frame, the back cover vibrating diaphragm that periphery is fixedly connected with the top of basin frame, atresia bullet ripple, magnetic sound column, hollow fixed coil and the shielding cage that is arranged on basin frame bottom, wherein, the bottom center of described back cover vibrating diaphragm is fixedly connected with center, atresia bullet ripple upper surface, and the center of atresia bullet ripple lower surface is fixedly connected with the magnetic sound column, and described hollow fixed coil is fixedly installed in the shielding cage and is positioned at magnetic sound column below.
2. magnetic as claimed in claim 1 moves loud speaker, it is characterized in that, described hollow fixed coil is fixedly connected with the shielding cage, the cavity of described hollow fixed coil contains the bottom of magnetic sound column in it, and described magnetic sound column is cylinder, cylindrical shell, eel-like figure cylinder or eel-like figure body structure.
3. magnetic as claimed in claim 1 moves loud speaker, it is characterized in that, described magnetic sound column is that cylindrical shell, eel-like figure cylindrical shell, bottom are formed with the cylinder of cavity or the eel-like figure column structure that the bottom is formed with cavity, and the magnetic sound column is inserted in the upper end of described hollow fixed coil.
4. magnetic as claimed in claim 3 moves loud speaker, it is characterized in that, described shielding cage bottom centre place offers centre bore, and the iron core that passes described centre bore from the bottom passes hollow fixed coil so that hollow fixed coil is fixedly connected with the shielding cage.
5. loud speaker as moving in the described magnetic of claim 2-4 any one, is characterized in that, is fixedly installed dust cover to avoid dust to enter inside in described back cover vibrating diaphragm end face center.
6. loud speaker as moving in the described magnetic of claim 2-4 any one, is characterized in that, the cross sectional shape of described back cover vibrating diaphragm is anti-parabolic type, linear pattern or parabolic type.
7. the moving loud speaker of magnetic as claimed in claim 6, is characterized in that, described back cover vibrating diaphragm comprises that described back cover is planar structure for the pressure ring, the ring that are fixedly connected with basin frame front opening edge and the back cover that is formed on back cover vibrating diaphragm centre bottom.
8. loud speaker as moving in the described magnetic of claim 2-4 any one, is characterized in that, described atresia bullet ripple is rounded, and its periphery is fixedly connected with the shallow basin frame of protected type, is formed with concentric a plurality of bullet ripple rings thereon.
9. loud speaker as moving in the described magnetic of claim 2-4 any one, is characterized in that, the lead-in wire of described hollow fixed coil is drawn and is connected with terminal block from the pore of basin frame, and described terminal block is fixedly connected with the basin frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320290800 CN203279160U (en) | 2013-05-24 | 2013-05-24 | Magnetomotive loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320290800 CN203279160U (en) | 2013-05-24 | 2013-05-24 | Magnetomotive loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203279160U true CN203279160U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320290800 Expired - Lifetime CN203279160U (en) | 2013-05-24 | 2013-05-24 | Magnetomotive loudspeaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN203279160U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281658A (en) * | 2013-05-24 | 2013-09-04 | 高魁民 | Magnetic-driven speaker |
| CN104796811A (en) * | 2015-04-29 | 2015-07-22 | 江西聚声泰科技有限公司 | High-fidelity earphone speaker |
| CN109309887A (en) * | 2017-10-23 | 2019-02-05 | 杭州赛泫科技有限公司 | Diaphragm-vibrating type loudspeaker and the earphone that can produce three-dimensional stereo effect |
| CN112565992A (en) * | 2020-11-27 | 2021-03-26 | 马群麟 | Moving-magnetic type electric loudspeaker |
-
2013
- 2013-05-24 CN CN 201320290800 patent/CN203279160U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281658A (en) * | 2013-05-24 | 2013-09-04 | 高魁民 | Magnetic-driven speaker |
| CN103281658B (en) * | 2013-05-24 | 2016-01-27 | 高魁民 | Magnetic moves loud speaker |
| CN104796811A (en) * | 2015-04-29 | 2015-07-22 | 江西聚声泰科技有限公司 | High-fidelity earphone speaker |
| CN109309887A (en) * | 2017-10-23 | 2019-02-05 | 杭州赛泫科技有限公司 | Diaphragm-vibrating type loudspeaker and the earphone that can produce three-dimensional stereo effect |
| CN112565992A (en) * | 2020-11-27 | 2021-03-26 | 马群麟 | Moving-magnetic type electric loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |