CN203251423U - High energy magnetic speaker - Google Patents
High energy magnetic speaker Download PDFInfo
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- CN203251423U CN203251423U CN 201320220690 CN201320220690U CN203251423U CN 203251423 U CN203251423 U CN 203251423U CN 201320220690 CN201320220690 CN 201320220690 CN 201320220690 U CN201320220690 U CN 201320220690U CN 203251423 U CN203251423 U CN 203251423U
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- loud speaker
- moving
- back cover
- basin frame
- vibrating diaphragm
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Abstract
The utility model discloses a high energy magnetic speaker comprising a shielding type shallow basin frame which is internally stuck with a bottom sealing diaphragm. The bottom surface of the bottom sealing diaphragm and the upper end face of an elastic wave are pasted together. The lower end face of the elastic wave is connected with a high performance magnetic sound column. The bottom end of the shielding type shallow basin frame under the high performance magnetic sound column is fixed with a high efficiency bodiless hollow fixed coil, and the bottom sealing membrane is equipped with a dustproof cover. The high energy magnetic speaker has the advantages of small size, light weight, good sound quality, and strong anti-interference ability.
Description
Technical field
The utility model relates to the moving loud speaker of a kind of high-energy magnetic in electroacoustic techniques field.
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 towards periphery medium radiation, realize the electroacoustic conversion physical effect.No matter at playback system or in electric sound reinforcement system, it all is the final tache that electricity finally is reduced into sound, is the Adam's apple of whole radiophonics system.In the high-fidelity electroacoustics system, loud speaker is a weakest link at present.Its indices all is lower than the high fidelity sound audio amplifier, does not still have so far breakthrough improvement.
The loud speaker that uses both at home and abroad at present mostly is the structure of coil-moving speaker.To be the solid frame of loud speaker by speaker frame, vibrating diaphragm, voice coil loudspeaker voice coil, centring disk (bullet ripple) vibrational system, magnetic circuit system forms.See Fig. 7.Its operation principle is:
According to left hand rule, make voice coil loudspeaker voice coil produce magnetic field by tone currents, the magnetic line of force of charged coil cutting intrinsic magnetic field (having another name called washer, T iron, magnet by magnetic conductive board consists of), voice coil loudspeaker voice coil is beated, thereby drive vibrating diaphragm (cone) 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, convert again acoustic energy to.
Coil-moving speaker has experienced very long developing history, and for many years, its performance has obtained constantly improving and improving, and becomes at present the most widely loud speaker, and this coil-moving speaker indices is imperfection still at present, waits to improve and improves its performance.As:
(1) need improve magnetic flux density and the uniformity of the residing magnetic gap of voice coil loudspeaker voice coil; Manage to produce and have than large amplitude and don't as for the loud speaker that exceeds the magnetic field effective range.
(2) need to solve the voice coil loudspeaker voice coil heating problem, 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.In the ordinary course of things, the power that bears of loud speaker is subjected to the stable on heating restriction of voice coil loudspeaker voice coil.Power is larger, and the heat of generation is long larger, causes 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 width of cloth of magnet itself is penetrated magnetic field, 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) near the frequency response curve of loud speaker its lowest resonant frequency (fo) has very high peak value, causes distortion because the vibrating diaphragm amplitude is excessive.This is that the coil-moving speaker producer wishes the defective that overcomes.
The utility model content
The purpose of this utility model is in order to address the above problem, to have designed the moving loud speaker of a kind of high-energy magnetic.
Realize that the above-mentioned purpose the technical solution of the utility model is, a kind of high-energy magnetic moves loud speaker, comprise the shallow basin frame of protected type, be stained with the back cover vibrating diaphragm in the shallow basin frame of protected type, the bottom surface of back cover vibrating diaphragm and atresia bullet ripple upper surface are pasted together, atresia bullet ripple lower surface is connected with the high performance magnetic sound column, is fixed with the hollow fixed coil of high efficiency tread flaking on the shallow basin frame of the protected type bottom of high performance magnetic sound column below, on the back cover vibrating diaphragm dust cover is housed.
The bottom of described back cover vibrating diaphragm is the back cover of plane formula, the control resonance state that the back cover of this plane formula can be suitable, and the gap of the peak valley face of attenuating high pitch resonance makes the cycle characteristic smooth, and transient characteristic is good.
Described high performance magnetic sound column is to be with magnetic cylinder or tube structure, and the high performance magnetic sound column is made with permanent magnet such as Nd-Fe-B magnet.
Described high performance magnetic sound column to be shaped as two ends thin I-shaped in the middle of thick, reduced the weight of high performance magnetic sound column, improved the generation quality of loud speaker, saved a large amount of precious metals.
The hollow fixed coil of described high efficiency tread flaking is exoskeletal tread flaking air core coil.
The maximum impedance value of the hollow fixed coil of described high efficiency tread flaking is 10K Ω.
The shallow basin frame of described protected type is the integrative-structure that is combined to form by shallow basin frame and shielding cage, and isolation structure is integrated, need not to add cage, has simplified the structure of loud speaker.
Described back cover vibrating diaphragm is provided with ring and is used for fixing letterweight ring.
The bottom surface of the shallow basin frame of described protected type is provided with centre bore.
The moving loud speaker of the high-energy 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 weight is light, saves a large amount of precious metals, and 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.
Description of drawings
Fig. 1 is the structural representation of high energy magnetic field loud speaker described in the utility model;
Fig. 2 is the structural representation of the shallow basin frame of protected type described in the utility model;
Fig. 3 is the structural representation of high performance magnetic sound column described in the utility model;
Fig. 4 atresia bullet described in the utility model wave structure schematic diagram;
The structural representation of the hollow fixed coil of Fig. 5 high efficiency tread flaking described in the utility model;
The structural representation of Fig. 6 three kinds of multi-form back cover vibrating diaphragms described in the utility model;
The structural representation of Fig. 7 coil-moving speaker described in the utility model;
Among the figure, 1, the shallow basin frame of protected type; 2, back cover vibrating diaphragm; 3, atresia bullet ripple; 4, high performance magnetic sound column; 5, the hollow fixed coil of high efficiency tread flaking; 6, dust cover; 7, shallow basin frame; 8, shielding cage; 9, ring; 10, letterweight ring; 11, centre bore.
Embodiment
Below in conjunction with accompanying drawing the utility model is specifically described, the structural representation of high energy magnetic field loud speaker described in the utility model such as Fig. 1, as shown in the figure, a kind of high-energy magnetic moves loud speaker, comprise the shallow basin frame 1 of protected type, be stained with back cover vibrating diaphragm 2 in the shallow basin frame of protected type, the bottom surface of back cover vibrating diaphragm and atresia bullet ripple 3 upper surfaces are pasted together, atresia bullet ripple lower surface is connected with high performance magnetic sound column 4, be fixed with the hollow fixed coil 5 of high efficiency tread flaking on the shallow basin frame of the protected type bottom of high performance magnetic sound column below, the back cover vibrating diaphragm is equipped with dust cover 6.Wherein, the bottom of described back cover vibrating diaphragm is the back cover of plane formula; Described high performance magnetic sound column is to be with magnetic cylinder or tube structure; Described high performance magnetic sound column to be shaped as two ends thin I-shaped in the middle of thick; The hollow fixed coil of described high efficiency tread flaking is exoskeletal tread flaking air core coil; The maximum impedance value of the hollow fixed coil of described high efficiency tread flaking is 10K Ω; The shallow basin frame of described protected type is the integrative-structure that is combined to form by shallow basin frame 7 and shielding cage 8; Described back cover vibrating diaphragm is provided with ring 9 and is used for fixing letterweight ring 10; The bottom surface of the shallow basin frame of described protected type is provided with centre bore 11.
The characteristics of the technical program are to adopt the shallow basin shelf structure of protected type, and nonmagnetic steel is without washer, without T iron, by being connected to the high energy magnetic sound column that plays on the ripple and the fixed coil by tone currents forms.The external section of magnet steel volume 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.The back cover vibrating diaphragm sticks with glue knot on the basin frame.Because the performance of vibrating diaphragm depends on the geometry of vibrating diaphragm, so it is little to want loudspeaker distortions, just should not produce or reduce the diaphagras of vibrating diaphragm.The characteristics of back cover vibrating diaphragm are vibrating diaphragm centre back covers in the technical program, and back cover is planar shaped, the center atresia, and directly glued joint with the bullet ripple on the back cover plane.Such structural design can produce the effect of being obedient to of machinery, suitable control resonance state, and the gap of the peak valley face of attenuating high pitch resonance makes the cycle characteristic smooth, and transient characteristic is good.Also to vibrating diaphragm generation reinforcement, reduce diaphagras simultaneously.Can also reduce simultaneously the height of basin frame.The section configuration of the back cover vibrating diaphragm that the technical program is designed roughly is divided into shown in Figure 6 three kinds, is respectively anti-parabolic type, linear pattern and parabolic type.Atresia bullet ripple is because without centre bore, so the corresponding bullet ripple number of rings that increased has been improved the range of linearity of displacement, has reduced non-linear.Also simplify simultaneously the production technology that plays ripple, reduced the production cost that plays ripple.The technical program has been saved washer, T iron and heavy magnet, and the high performance magnetic sound column adopts I-shaped design, reduced loud speaker self stray magnetic field on every side without the impact of device, saved a large amount of precious metals.The hollow fixed coil of high efficiency tread flaking is exoskeletal tread flaking air core coil, because the relation of structure, the space allows to strengthen wire diameter, can effectively prevent voice coil loudspeaker voice coil heating and burnt, delayed the aging of voice coil loudspeaker voice coil material and binding agent, bear power thereby obviously improve loud speaker, prolonged the useful life of loud speaker.
General loudspeaker voice coil lead-out wire is drawn through vibrating diaphragm, again by the terminal block of external lead wire to the basin frame.Audio signal links to each other 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 welding, solder joint place gluing.Do so the degree of balance that all can destroy vibrating diaphragm, cause tonequality to degenerate.What the technical program adopted is the fixed coil of wire diameter overstriking, and lead-out wire directly is connected with terminal block, has eliminated defects.
The operation principle of this device is: the hollow fixed coil of high efficiency tread flaking is by behind the tone currents, and the high performance magnetic sound column utilizes the alternating magnetic field of coil electricity generation and the fixed magnetic field two like magnetic poles repel each other principle that there is a natural attraction between the sexes of high performance magnetic sound column to drive back cover vibrating diaphragm vibrate air sounding.Owing 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 damping action and the minimizing of back cover vibrating diaphragm of atresia bullet ripple to cut apart effect, loud speaker is bordering on smoothly at fo place frequency response curve, thereby has improved frequency response characteristic, reduce distortion, be conducive to simplify the design of frequency divider circuit.The high performance 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 the ripple, tap is arranged or be fixedly installed in the metallic shield 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.
Those of ordinary skill in the art is under the enlightenment of the technical program; do not breaking away from the scope situation that the utility model aim and claim protect; can also make the concrete conversion of a lot of forms, such as: horn loudspeaker, magnetic driven microphone, metal vibration diaphragm, metal elastic ripple etc.
Technique scheme has only embodied the optimal technical scheme of technical solutions of the utility model; some changes that those skilled in the art may make some part have wherein all embodied principle of the present utility model, all belong within the protection range of the present utility model.
Claims (9)
1. a high-energy magnetic moves loud speaker, comprise the shallow basin frame of protected type (1), it is characterized in that, be stained with back cover vibrating diaphragm (2) in the shallow basin frame of protected type, the bottom surface of back cover vibrating diaphragm and atresia bullet ripple (3) upper surface are pasted together, atresia bullet ripple lower surface is connected with high performance magnetic sound column (4), is fixed with the hollow fixed coil of high efficiency tread flaking (5) on the shallow basin frame of the protected type bottom of high performance magnetic sound column below, and the back cover vibrating diaphragm is equipped with dust cover (6).
2. the moving loud speaker of high-energy magnetic according to claim 1 is characterized in that the bottom of described back cover vibrating diaphragm is the back cover of plane formula.
3. the moving loud speaker of high-energy magnetic according to claim 1 is characterized in that described high performance magnetic sound column is to be with magnetic cylinder or tube structure.
4. the moving loud speaker of high-energy magnetic according to claim 1 is characterized in that, described high performance magnetic sound column to be shaped as two ends thin I-shaped in the middle of thick.
5. the moving loud speaker of high-energy magnetic according to claim 1 is characterized in that the hollow fixed coil of described high efficiency tread flaking is exoskeletal tread flaking air core coil.
6. the moving loud speaker of high-energy magnetic according to claim 1 is characterized in that the maximum impedance value of the hollow fixed coil of described high efficiency tread flaking is 10K Ω.
7. the moving loud speaker of high-energy magnetic according to claim 1 is characterized in that, the shallow basin frame of described protected type is the integrative-structure that is combined to form by shallow basin frame (7) and shielding cage (8).
8. the moving loud speaker of high-energy magnetic according to claim 1 is characterized in that, described back cover vibrating diaphragm is provided with ring (9) and is used for fixing letterweight ring (10).
9. the moving loud speaker of high-energy magnetic according to claim 7 is characterized in that the bottom surface of the shallow basin frame of described protected type is provided with centre bore (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220690 CN203251423U (en) | 2013-04-27 | 2013-04-27 | High energy magnetic speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220690 CN203251423U (en) | 2013-04-27 | 2013-04-27 | High energy magnetic speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203251423U true CN203251423U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320220690 Expired - Fee Related CN203251423U (en) | 2013-04-27 | 2013-04-27 | High energy magnetic speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203251423U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281658A (en) * | 2013-05-24 | 2013-09-04 | 高魁民 | Magnetic-driven speaker |
| CN112565992A (en) * | 2020-11-27 | 2021-03-26 | 马群麟 | Moving-magnetic type electric loudspeaker |
-
2013
- 2013-04-27 CN CN 201320220690 patent/CN203251423U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20160427 |