CN209488799U - A kind of moving iron loud speaker and earphone - Google Patents
A kind of moving iron loud speaker and earphone Download PDFInfo
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- CN209488799U CN209488799U CN201821990263.1U CN201821990263U CN209488799U CN 209488799 U CN209488799 U CN 209488799U CN 201821990263 U CN201821990263 U CN 201821990263U CN 209488799 U CN209488799 U CN 209488799U
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- moving iron
- accepting hole
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Abstract
The utility model relates to be related to dynamic iron technical field, more particularly to a kind of moving iron loud speaker and earphone.Wherein, moving iron loud speaker, comprising: magnetic element；Coil, the coil offer the first accepting hole；Iron core is fixedly connected on the coil, and the iron core offers the second accepting hole, and the magnetic element is contained in second accepting hole；Armature, the armature extends through first accepting hole and the second accepting hole, a part of the armature is vacantly contained in first accepting hole, and another part of the armature is vacantly contained in second accepting hole and is set in the fixation permanent magnetic field that the magnetic element is formed；Pad is electrically connected to the coil.The utility model passes through the woofer based on miniature balanced armature technology, the size and ability of vibrating diaphragm and magnet can be made full use of, without changing magnetic Circuit Design, miniature balanced armature unit volume can accomplish much smaller, can satisfy the demand that current electronic product is thinned and minimizes increasingly.
Description
Technical field
The utility model relates to move iron technical field, more particularly to a kind of moving iron loud speaker and earphone.
Background technique
With development in science and technology, in recent years music earphone, wearable device small and slimming, people are to these electricity
The performance requirement of sub- product is also higher and higher, so that the volume of matched electronic component is also required to be also required to reduce, performance
Consistency is continuously improved.Woofer is a kind of important spare part for being widely used in above-mentioned electronic product, it is desirable that is being ensured
Its volume is minimized on the basis of speaker performance, to adapt to the needs of novel electronic devices.
But inventor, during realizing the utility model, there are following technical problems for the discovery prior art: tradition is low
The magnetic circuit system size of sound loudspeaker is bigger, thicker, and the woofer of this structure, the small product size made is larger,
It is unable to satisfy the demand that current electronic product is thinned and minimizes increasingly.
Utility model content
One purpose of the utility model embodiment is intended to provide a kind of moving iron loud speaker and earphone, is raised with solving conventional bass
Sound device small product size is larger, be unable to satisfy that current electronic product is thinned and minimizes increasingly the technical issues of.
In order to solve the above technical problems, the utility model embodiment is the following technical schemes are provided: in this reality of the utility model
A kind of moving iron loud speaker is provided with novel comprising: casing assembly comprising upper shell and lower casing, the upper shell is under
Shell is fixedly connected, and the upper shell offers sound outlet hole on one side, and the shape of the sound outlet hole is circular aperture.Magnetic group
Part forms fixed magnetic field；Iron core, the magnet assembly are contained in the iron core；Armature, one end receiving of the armature
In the iron core and it is set in the fixed magnetic field that the magnet assembly is formed；Coil, the coil panel are around in the armature
The other end for receiving ac signal, and then generates the magnetic field of checker, and thus the armature is magnetized, and magnetization side
Change to the variation with magnetic direction, finally occurs under the action of the fixed magnetic field that the magnet assembly is formed inclined
Turn, generates alternating movement upward or downward.
Optionally, the armature is U-shaped, including U-shaped interconnecting piece, the first armature plate and the second armature plate, first electricity
Pivot piece and second armature plate are respectively fixedly connected in the both ends of the U-shaped interconnecting piece；The coil offers the first receipts
Rong Kong, the iron core offer the second accepting hole；First armature plate extends through first accepting hole and the second receiving
Hole, described first armature plate a part are vacantly contained in first accepting hole, and another part of first armature plate is hanging
It is contained in second accepting hole and is set in the fixation permanent magnetic field that the magnet assembly is formed；Second armature plate is fixed
It is set to the outer surface of the coil.
Optionally, the armature is made of soft magnetic materials.
Optionally, the magnet assembly include the first magnetic element and the second magnetic element, first magnetic element and
Second magnetic element is contained in second accepting hole and is relatively arranged on the inner surface of the iron core.
Optionally, the upper shell and lower casing are fixedly connected to form an accommodating chamber；The moving iron loud speaker further includes solid
Fixed board and vibrating diaphragm, the vibrating diaphragm fixation are contained in the fixed plate, and the side frame of the fixed plate is connected to the upper shell
Inner surface, and then the accommodating chamber is separated into epicoele and cavity of resorption；The moving iron loud speaker further includes pad；The coil, institute
It states magnet assembly, the armature and the iron core and is contained in the cavity of resorption, the pad is set to the casing assembly appearance
Face.
Optionally, one end of the vibrating diaphragm offers the first fixation hole；One end of the armature is provided with the first protrusion, institute
It states the first protrusion and extends second accepting hole, first protrusion offers the second fixation hole；The moving iron loud speaker is also
Including conductive bar, through first fixation hole is connected to, the other end grafting of the conductive bar is solid for one end of the conductive bar
Due to second fixation hole, the movement of the armature can drive the movement of the conductive bar, and then drive the vibration of the vibrating diaphragm
It is dynamic.
Optionally, the upper shell offers sound outlet hole, the sound outlet hole connection close to first fixation hole on one side
In the epicoele, the sound that the diaphragm oscillations issue is transmitted to outside by the sound outlet hole.
Optionally, the sound outlet hole is connected to the epicoele, and the sound that the diaphragm oscillations issue passes through the sound outlet hole
It is transmitted to outside.
Optionally, the pad includes the first pad, the second pad, the first conducting wire and the second conducting wire；The coil surface
It is provided with the first electric connecting terminal and the second electric connecting terminal；One end of first conducting wire is electrically connected to first pad, another
End is electrically connected to first electric connecting terminal；One end of second conducting wire is electrically connected to second pad, and the other end is electrically connected
It is connected to second electric connecting terminal, to form primary Ioops, the AC signal for receiving the pad is conducted to coil,
Make to produce the magnetic field of checker around coil.
On the other hand, the utility model also provides a kind of earphone, including above-mentioned moving iron loud speaker.
The beneficial effect of the utility model embodiment is: being in contrast to the prior art, the utility model provides
A kind of moving iron loud speaker, comprising: magnet assembly forms fixed permanent magnetic field；Coil, the coil offer the first receiving
Hole；Iron core is fixedly connected on the coil, and the iron core offers the second accepting hole, and the magnetic element is contained in described
Second accepting hole；Armature, the armature extend through first accepting hole and the second accepting hole, and a part of the armature is outstanding
Sky is contained in first accepting hole, and another part of the armature is vacantly contained in second accepting hole and is set to described
In the magnetic field for the fixation that magnetic element is formed；Pad is electrically connected to the coil.The utility model is by being based on miniature balance
The woofer of armature technology can make full use of the size and ability of vibrating diaphragm and magnet to compare without changing magnetic Circuit Design
With the moving-coil unit of same output sound pressure level, miniature balanced armature unit volume can accomplish much smaller, can satisfy current electricity
The demand that sub- product is thinned and minimizes increasingly.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of configuration schematic diagram for moving iron loud speaker that the utility model embodiment provides；
Fig. 2 is the configuration schematic diagram of another angle of moving iron loud speaker shown in FIG. 1；
Fig. 3 is the structural schematic diagram of the casing assembly of moving iron loud speaker shown in FIG. 1；
Fig. 4 is the structural schematic diagram of another angle of casing assembly of moving iron loud speaker shown in FIG. 1；
Fig. 5 is the vibrating diaphragm of moving iron loud speaker shown in FIG. 1 and the structural schematic diagram of fixed plate；
Fig. 6 is the coil of moving iron loud speaker shown in FIG. 1 and the structural schematic diagram of iron core；
Fig. 7 is that the package assembly of the coil of moving iron loud speaker shown in FIG. 1, iron core, armature, magnetic element and conductive bar is shown
It is intended to；
Fig. 8 is the structural schematic diagram of the armature of moving iron loud speaker shown in FIG. 1；
Fig. 9 is the assembly structure diagram of the iron core of moving iron loud speaker shown in FIG. 1, coil and pad；
Figure 10 is a kind of frequency response curve for moving iron loud speaker that ventional loudspeakers and utility model embodiment provide.
Specific embodiment
For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more
Detailed description.It should be noted that it can be directly in another element when element is expressed " being fixed on " another element
Upper or placed in the middle there may be one or more therebetween elements.When an element is expressed " connection " another element, it can
To be directly to another element or elements placed in the middle there may be one or more therebetween.This specification is used
Term "vertical", "horizontal", "left" and "right" and similar statement for illustrative purposes only.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification
Language is only for the purpose of describing specific embodiments, and is not intended to limitation the utility model.Art used in this specification
Language "and/or" includes any and all combinations of one or more related listed items.
Also referring to Fig. 1 and Fig. 2, the moving iron loud speaker 100 includes casing assembly 10, fixed plate 20, vibrating diaphragm 30, line
Circle 40, iron core 50, magnet assembly 60, armature 70, conductive bar 80 and pad 90；The fixed plate 20, vibrating diaphragm 30, coil 40, iron
Core 50, magnet assembly 60, armature 70 and conductive bar 80 are contained in the casing assembly 10, and the pad 90 is set to described outer
10 outer surface of shell component, for receiving external communication electric signal；The pad 90 is electrically connected to the coil 40, and being used for will be described
The AC signal that pad 90 receives is conducted to coil 40, makes to produce the magnetic field of checker around coil 40.The coil
40 are connected to the iron core 50, and the magnet assembly 60 is contained in the iron core 50, and the coiling of coil 40 is in the armature 70
One end, the other end of the armature 70 runs through and is vacantly contained in the magnet assembly 60；80 one end of conductive bar connection
In the armature 70, the other end of the conductive bar 80 is connected to the vibrating diaphragm 30, and the movement of the armature 70 drives after magnetization
The movement of the conductive bar 80, and then drive the vibration of the vibrating diaphragm 30.
Also referring to Fig. 3 and Fig. 4, the casing assembly 10 includes upper shell 12 and lower casing 14, the upper shell 12
With lower casing 14 include a bottom wall 122 and around a bottom wall 122 setting four side walls 124, the upper shell 12 and it is described under
Four side walls 124 of shell 14 are mutually permanently connected.
The cuboid that the shape of the upper shell 12 and the lower casing 14 is substantially open on one side, in some embodiments
In, the shape of upper shell 12 and lower casing 14 can be set as needed as different shapes, such as hemispherical, semielliptical shape or
Irregular gengon etc..
In some embodiments, upper shell 12 and lower casing 14 are integrally formed, and eliminate shell 12 and lower casing 14
The gap of junction improves the dustproof and waterproof of moving iron loud speaker.The bottom wall 122 of the upper shell 12 and the lower casing 14
Junction with four side walls 124 is curved edge 123, and the curved edge 123 can prevent acoustic wave diffraction from generating to sound
Any negative effect.
The upper shell 12 and the lower casing 14 use the external shell material of polyurethane integral, which can be multiple with high accuracy
Sound detail processed, sound is maintained in the limited tolerance strictly regulated.The upper shell 12 and the fixed company of the lower casing 14
It connects, and forms an accommodating chamber 18, the fixed plate 20, vibrating diaphragm 30, coil 40, iron core 50, magnet assembly 60, armature 70 and conduction
Bar 80 is contained in the accommodating chamber 18.
The upper shell 12 offers sound outlet hole 126 on one side, and the sound that the vibration of vibrating diaphragm 30 issues passes through the sound out
Hole 126 is transmitted to outside, and the shape of the sound outlet hole 126 is circular aperture, referring to Fig. 10, ventional loudspeakers sound hole 126 is set
It is calculated as rectangle, the acoustical curve using the moving-iron receiver of this design is shown in dotted line, and the application design is by sound outlet hole
126 are designed as circular aperture, and area size can cause certain physics sound to hinder to sound out, and acoustical curve is as shown by the solid line,
Using this design, it can allow a common loudspeaker, in the case where not changing interior design, become one with low frequency
The loudspeaker of response advantage.And high-frequency resonance is reduced, when carrying out multiple-unit combination frequency dividing for client, can also not have to consider
High frequency.
In some embodiments, the shape of the sound outlet hole 126 can also be other regular shapes such as rectangular and oval, circle
Pore size needs are designed according to actual acoustic curve demand.
The one side of the lower casing 14 far from sound outlet hole 126 offers first through hole 142 and the second through-hole 146, institute respectively
The shape of first through hole 142 and second through-hole 146 is stated as semicircle, the pad 90 can pass through the first through hole respectively
142 and second through-hole 146 be electrically connected to the coil 40.
The casing assembly 10 further includes sound guide tube 16, and the sound guide tube 16 is set to 12 outer surface of upper shell, and
Be covered on the sound outlet hole 126, offer leading note chamber 162 inside the sound guide tube 16, the leading note chamber 162 be connected to it is described go out
Sound hole 126, for guiding the direction of transfer of sound.
Referring to Fig. 5, the four side frame 22 of the fixed plate 20 is individually fixed in four side walls 124 in upper shell 12, institute
It states fixed plate and 12 bearing of upper shell to be isolated with epoxide-resin glue sealing, separates accommodating chamber 18 at epicoele and back cavity,
The fixation of vibrating diaphragm 30 is contained in the fixed plate；The coil 40, the magnet assembly 60, the armature 70 and the conduction
Bar 80 is contained in the cavity of resorption.The sound outlet hole 126 is connected to the epicoele, and the sound that the vibration of vibrating diaphragm 30 issues passes through
The sound outlet hole 126 is transmitted to outside.
The shape of the vibrating diaphragm 30 is rectangle, and the vibrating diaphragm 30 offers first close to one end of sound outlet hole 126 and fixes
Hole 32, the vibrating diaphragm 30 are plastic vibratory film, and the plastic vibratory film can choose different types as needed, such as PET (gathers
Ethylene terephthalate), PEN (polyethylene diformate), PEI (polyetherimide) and PI (polyimides) etc..Some
In embodiment, metal vibration diaphragm 30 is can also be used in the vibrating diaphragm 30, such as: aluminium alloy, titanium alloy and beryllium alloy etc..
In some embodiments, other kinds of vibrating diaphragm 30 can also be used in the vibrating diaphragm 30, such as: wooden vibrating membrane, life
Object vibrating membrane and papery vibrating membrane etc..30 size of vibrating diaphragm is preferably 20~30MM of Φ, 30 size of vibrating diaphragm it is big
The small sound quality for determining the moving iron loud speaker.
The thickness of the vibrating diaphragm 30 is preferably 2-5 μm, and under the ability that maximum vibration is born, diaphragm thickness is thinner, low frequency
Better.
In some embodiments, the surface etch of the vibrating diaphragm 30 has water ripples, and the main increasing action of water ripples rises
The effect of reinforcing rib increases the rigidity in the vibration of vibrating diaphragm 30 and increases the effective radiating area of vibrating diaphragm 30, also there is certain improvement
The effect of damping, and the lines of the water ripples is deeper, intermediate frequency density is bigger, and intermediate frequency is more clear.
In some embodiments, the surface of the vibrating diaphragm 30 can also etch as round line and sun line etc..
Referring to Fig. 6, the coiling of coil 40 is in one end of the armature 70, the opposite sides of 40 bottom of coil
It is respectively arranged with the first electric connecting terminal 44 and the second electric connecting terminal (figure does not indicate), it is described for being electrically connected to the pad 90
First electric connecting terminal 44 and second electric connecting terminal (figure does not indicate) shape are cylindrical body, 44 He of the first electric connecting terminal
The middle part of second electric connecting terminal (figure does not indicate) offers the first socket (figure does not indicate) respectively and the second socket (schemes not mark
Show).
The coil 40 is coiled to form by OFC copper wire, and the OFC copper wire purity is higher, has sound density good, middle low frequency
The thick and solid exquisiteness of sound, medium-high frequency strength sense become the features such as soft.In some embodiments, the coil 40 can be by common copper cash
It is made, but due to skin effect principle, copper conductor center is only suitable for low frequency signal in transmission, surface is suitble to transmission high
Frequency signal, it is unequal when transmission.
In some embodiments, the coil 40 can be made by copper-clad aluminum conductor, and low frequency had been both in the copper-clad aluminum conductor
There is the thick and solid fine and smooth of copper wire, and has the low high frequency characteristics of aluminum steel good, the feature that sound is beautiful, penetrating.
In some embodiments, the coil 40 can also be made by aluminum steel, the aluminum steel lighter weight, density ratio copper
Small, vibration efficiency is high, so high frequency is beautiful, thoroughly.
The iron core 50 is generally shaped like cuboid, and the middle part of the iron core 50 offers the second accepting hole 52, described
Second accepting hole 52 is generally shaped like cuboid, and second accepting hole 52 can be set as identical according to the first accepting hole 42
Shape, the iron core 50 is fixedly connected with the coil 40, and second accepting hole 52 is connected to first accepting hole
42, and the height of second accepting hole 52 is greater than the height of first accepting hole 42.
Referring to Fig. 7, the magnet assembly 60 includes the first magnetic element 62 and the second magnetic element 64, first magnetic
Property element 62 and second magnetic element 64 are contained in second accepting hole 52 and are relatively arranged on the iron core 50
Inner surface.
First magnetic element 62 and second magnetic element 64 are generally shaped like cuboid, and described first is magnetic
The shape of element 62 and second magnetic element 64 can be set as identical shape according to second accepting hole 52, and described
The length of first magnetic element 62 and second magnetic element 64 is adapted with the length of second accepting hole 52, and described
The width of one magnetic element 62 and second magnetic element 64 is adapted with the width of second accepting hole 52.
First magnetic element 62 and second magnetic element 64 are permanent magnet, 62 He of the first magnetic element
Fixed permanent magnetic field is formed between second magnetic element 64.
Referring to Fig. 8, the armature 70 include U-shaped interconnecting piece 72, the first armature 74 and the second armature plate 76, described first
Armature 74 and second armature plate 76 are respectively fixedly connected in the both ends of the U-shaped interconnecting piece 72, and are parallel to each other.
The U-shaped interconnecting piece 72, the first armature 74 and the second armature plate 76 collectively form U-typed armature 70, and described first
Armature 74 and second armature plate 76 may be largely trapezoidal in shape.
The U-shaped interconnecting piece 72, the first armature 74 and the second armature plate 76 are made of soft magnetic materials.When the coil 40
Behind the magnetic field for producing checker, first armature 74 can be magnetized, and the direction of magnetization is with the variation of magnetic direction
And change；After first armature 74 is magnetized, it can be formed between first magnetic element 62 and second magnetic element 64
It deflects under the action of fixed permanent magnetic field, is changed according to the alternating of the direction of magnetization, generate alternating movement up and down.
First armature 74 runs through and is vacantly contained in first accepting hole 42 and second accepting hole 52, can be with
Understand, described first armature, 74 a part is vacantly contained in the first accepting hole 42 of coil 40, first armature 74
Another part is vacantly contained in the second accepting hole 52 of the iron core 50, and is set to first magnetic element 62 and described
Between second magnetic element 64.
One end of first armature 74 is provided with the first protrusion 742, and the first protrusion 742 of first armature 74 extends
The shape of second accepting hole 52 out, first protrusion 742 is cuboid, and the length of first protrusion 742 is much smaller than
The length of described first armature, 74 one end, the height of first protrusion 742 are equal to the height of described first armature, 74 one end, the
One protrusion 742 can be set as needed as different shapes, such as: it is square, trapezoidal, oval and round etc..Described first
Protrusion 742 offers the second fixation hole (figure does not indicate), and for fixing the conductive bar 80, the conductive bar 80 is thin round bar
Shape, one end of the conductive bar 80 are fixedly connected on second fixation hole (figure does not indicate), the other end of the conductive bar 80
Through the first fixation hole 32 for being connected to the vibrating diaphragm 30.
Second armature plate 76 is set between vibrating diaphragm 30 and coil 40, and the fixed company of one side of the second armature plate 76
It is connected to the outer surface of the iron core 50.
Referring to Fig. 9, the pad 90 is for receiving external communication electric signal, the pad 90 include the first pad 92,
Second pad 94, the first conducting wire 96 and the second conducting wire 98, one end of first conducting wire 96 are electrically connected to first pad 92,
The other end of first conducting wire 96 is electrically connected to the first socket of first electric connecting terminal 44 (figure does not indicate)；Described second
One end of conducting wire 98 is electrically connected to second pad 94, and the other end of second conducting wire 98 is electrically connected to second electricity
The second socket (figure does not indicate) of connecting pin (figure does not indicate), and then primary Ioops are formed, for what the pad 90 was received
AC signal is conducted to coil 40, makes to produce the magnetic field of checker around coil 40.
The concrete operating principle of above-mentioned moving iron loud speaker is that the AC signal that the pad 90 receives is conducted to coil 40,
Make to produce the magnetic field of checker around coil 40, after coil 40 produces the magnetic field of checker, due to described first
A part of armature 74 is vacantly contained in the second accepting hole 52 of the coil 40, and thus armature 70 is magnetized, and the side of magnetization
Change to the variation with magnetic direction.Since another part of first armature 74 is set to first magnetic element
Between 62 and second magnetic element 64, the armature 70 is in first magnetic element 62 and second magnetic element 64
It deflects under the action of the fixation permanent magnetic field of formation, is changed according to the alternating of the direction of magnetization, generate alternating up and down
Movement, the movement of the armature 70 drives the movement of the conductive bar 80, and then drives the vibration of the vibrating diaphragm 30, the vibration
The movement of film 30 can vibrate air and generate sound.
In some embodiments, all elements of moving iron loud speaker, shell 12 as above, lower casing 14, sound guide tube 16, armature
70, coil 40, the surface of magnet assembly 60 can all be covered with waterproof nano coating.Preferably, waterproof nano coating is chosen as containing
Fluorosilicone, it is contemplated that the adverse effect that the thickness of waterproof nano coating can generate vibrating diaphragm 30, optionally, flucride siloxane is thick
Degree is 400-500nm.In the present embodiment, it using solwution method prepared by waterproof nano coating, specific preparation method is such as
Under:
1, sulfenyl S-H and vinyl CH=CH is configured2The nano coating solution of (molar ratio 1:1.15), passes through free radical
The grafting of organic fluorine chain and polysiloxanes is realized in addition reaction, is initiator with azodiisobutyronitrile, to obtain waterproof nano
Coating solution.Contain sulfide group in flucride siloxane structure using the synthesis of this route, with highly polar and nucleophilicity Asia
Sulfuryl.Specific reaction equation is as follows:
As R=H, Rf=CH2O(CH2)2C6F13, C6F5；
Work as R=CH3When, Rf=CO2(CH2)2C6F13；
2, waterproof nano coating solution is poured into reaction vessels, room temperature is controlled at 25 DEG C or so.
3,30 substrate of vibrating diaphragm is put into and is impregnated 2-3 seconds inside the waterproof nano coating solution, slowly picked up with hand immediately
30 substrate of vibrating diaphragm.
4, the upper surface of 30 substrate of vibrating diaphragm stands 40-60 seconds upward, so that waterproof nano coating is formed in 30 substrate of vibrating diaphragm
Upper surface.Pay attention to not thering is sharp object to touch 30 surface of vibrating diaphragm during standing in order to avoid destroying waterproof nano coating
Formation.
Waterproof nano coating upper surface deposits wearing layer, and 30 substrate of vibrating diaphragm shows good mechanical performance, 30 base of vibrating diaphragm
The hardness at bottom can be increased to HV2000 or so by HV1200 or so, and wear-resisting property and corrosion resisting property have bigger raising.
Wearing layer is chosen as tungsten-cobalt alloy nano coating.The quality of vibrating diaphragm 30 can be generated not in view of tungsten-cobalt alloy nano coating is blocked up
Good influence, the maximum gauge of tungsten-cobalt alloy nano coating are 1um.
The frequency response output of traditional moving iron loud speaker, medium-high frequency section is excellent, and bass effect does not protrude.Compared with prior art
Compared with the woofer in the utility model is based on balanced armature energy-conversion technique (referred to as " dynamic iron technology "), the utility model
By above-mentioned sound design out, it can achieve and inhibit medium-high frequency output, promote bass effect.This mode can make full use of vibrating diaphragm
With the size and ability of magnet, without changing magnetic Circuit Design.As described in Figure, dash-dotted gray line is that common moving iron loud speaker frequency response is bent
Line, solid black lines are the effect frequency response curve of the bass moving iron loud speaker of the utility model.As can be seen that the curve of its low-frequency range
Response is apparently higher than medium-high frequency section, to reach the bass boost effect of anticipation.
The utility model is the woofer based on miniature balanced armature technology simultaneously.Compared to same output sound pressure level
Moving-coil unit, miniature balanced armature unit volume can accomplish much smaller.It can satisfy current electronic product to be thinned increasingly
With the demand of miniaturization.
The utility model embodiment also provides a kind of earphone, including the moving iron loud speaker in any of the above-described embodiment.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Under the thinking of the utility model, it can also be combined between the technical characteristic in above embodiments or different embodiments,
Step can be realized with random order, and there are many other variations of the different aspect of the utility model as described above, be
Simplicity, they do not provide in details；Although the utility model is described in detail with reference to the foregoing embodiments, this
The those of ordinary skill in field it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments,
Or equivalent replacement of some of the technical features；And these are modified or replaceed, and do not make the sheet of corresponding technical solution
Matter is detached from the range of each embodiment technical solution of the application.
Claims (10)
1. a kind of moving iron loud speaker characterized by comprising
Casing assembly comprising upper shell and lower casing, the upper shell are fixedly connected with the lower casing, the upper shell
Sound outlet hole is offered on one side, and the shape of the sound outlet hole is circular aperture；
Magnet assembly forms fixed magnetic field；
Iron core, the magnet assembly are contained in the iron core；
Armature, one end of the armature are contained in the iron core and are set in the fixed magnetic field that the magnet assembly is formed；
Coil, the coil panel are around in the other end of the armature, for receiving ac signal, and then generate checker
Thus magnetic field, the armature are magnetized, and the direction of magnetization changes with the variation of magnetic direction, finally in the magnet assembly
It deflects under the action of the fixed magnetic field of formation, generates alternating movement upward or downward.
2. moving iron loud speaker according to claim 1, which is characterized in that
The armature is U-shaped, and the armature includes U-shaped interconnecting piece, the first armature plate and the second armature plate, first armature plate
With being respectively fixedly connected in the both ends of the U-shaped interconnecting piece for second armature plate；
The coil offers the first accepting hole, and the iron core offers the second accepting hole；
First armature plate extends through first accepting hole and the second accepting hole, and described first armature plate a part is hanging
It is contained in first accepting hole, another part of first armature plate is vacantly contained in second accepting hole and is set to
In the fixation permanent magnetic field that the magnet assembly is formed；Second armature plate is fixedly installed on the outer surface of the coil.
3. moving iron loud speaker according to claim 1, which is characterized in that
The armature is made of soft magnetic materials.
4. moving iron loud speaker according to claim 2, which is characterized in that
The magnet assembly includes the first magnetic element and the second magnetic element, first magnetic element and second magnetism
Element is contained in second accepting hole and is relatively arranged on the inner surface of the iron core.
5. moving iron loud speaker according to claim 2, which is characterized in that
The upper shell and lower casing are fixedly connected to form an accommodating chamber；
The moving iron loud speaker further includes fixed plate and vibrating diaphragm, and the vibrating diaphragm is fixedly connected on the fixed plate, the fixed frame
It is fixedly connected on the inner surface of the upper shell, the accommodating chamber is separated for epicoele and cavity of resorption；
The moving iron loud speaker further includes pad；
The coil, the magnet assembly, the armature and the iron core are contained in the cavity of resorption, and the pad is set to institute
State casing assembly outer surface.
6. moving iron loud speaker according to claim 5, which is characterized in that
One end of the vibrating diaphragm offers the first fixation hole；
One end of the armature is provided with the first protrusion, and second accepting hole is extended in first protrusion, and described first is convex
Portion offers the second fixation hole；
The moving iron loud speaker further includes conductive bar, and one end of the conductive bar, which is run through, is connected to first fixation hole, described
The other end of conductive bar is plugged and fixed in second fixation hole, and the movement of the armature can drive the movement of the conductive bar,
And then drive the vibration vibration of membrane.
7. moving iron loud speaker according to claim 6, which is characterized in that
The sound outlet hole is connected to the epicoele, and the sound that the diaphragm oscillations issue is transmitted to outside by the sound outlet hole.
8. moving iron loud speaker according to claim 7, which is characterized in that
The moving iron loud speaker further includes sound guide tube, and the sound guide tube is installed on the upper outer surface of outer cover, and is covered on described
Sound outlet hole offers leading note chamber inside the sound guide tube, and the leading note chamber is connected to the sound outlet hole, for guiding the biography of sound
Pass direction.
9. moving iron loud speaker according to claim 5, which is characterized in that
The pad includes the first pad, the second pad, the first conducting wire and the second conducting wire；
The coil surface is provided with the first electric connecting terminal and the second electric connecting terminal；
One end of first conducting wire is electrically connected to first pad, and the other end is electrically connected to first electric connecting terminal；Institute
The one end for stating the second conducting wire is electrically connected to second pad, and the other end is electrically connected to second electric connecting terminal, to be formed
Primary Ioops, the AC signal for receiving the pad are conducted to coil, make to produce the magnetic of checker around coil
?.
10. a kind of earphone, which is characterized in that including according to claim 1-9 described in any item moving iron loud speakers.
Priority Applications (1)
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| CN201821990263.1U CN209488799U (en) | 2018-11-29 | 2018-11-29 | A kind of moving iron loud speaker and earphone |
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| CN201821990263.1U CN209488799U (en) | 2018-11-29 | 2018-11-29 | A kind of moving iron loud speaker and earphone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109348375A (en) * | 2018-11-29 | 2019-02-15 | 深圳倍声声学技术有限公司 | A kind of moving iron loud speaker and earphone |
| CN113099361A (en) * | 2020-01-09 | 2021-07-09 | 北京小米移动软件有限公司 | Loudspeaker, audio module and terminal equipment |
-
2018
- 2018-11-29 CN CN201821990263.1U patent/CN209488799U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109348375A (en) * | 2018-11-29 | 2019-02-15 | 深圳倍声声学技术有限公司 | A kind of moving iron loud speaker and earphone |
| CN113099361A (en) * | 2020-01-09 | 2021-07-09 | 北京小米移动软件有限公司 | Loudspeaker, audio module and terminal equipment |
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