CN206963023U - Planar diaphragm speaker and earphone - Google Patents
Planar diaphragm speaker and earphone Download PDFInfo
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- CN206963023U CN206963023U CN201720467325.XU CN201720467325U CN206963023U CN 206963023 U CN206963023 U CN 206963023U CN 201720467325 U CN201720467325 U CN 201720467325U CN 206963023 U CN206963023 U CN 206963023U
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Abstract
The utility model belongs to speaker technology field, discloses a kind of planar diaphragm speaker and earphone, and the planar diaphragm speaker includes magnetic circuit system and vibrational system；Wherein, vibrational system includes the plane diaphragm and planar voice-coil being bonded to each other；Magnetic circuit system includes the magnetic group positioned at vibrational system side；Magnetic circuit system also includes magnetic conduction group, and magnetic conduction group is located at magnetic group back to the side of the vibrational system.The utility model uses the magnetic circuit with magnetic conduction group, can carry out antimagnetic conducting, ensures that the magnetic flux of magnet in vibrational system magnetic group maximizes and applies in magnetic field, prevents that magnetic is exposed, improve the driving effect of magnetic group, improve tonequality.
Description
Technical field
The utility model belongs to speaker technology field, is related to a kind of planar diaphragm speaker and earphone.
Background technology
Currently used earphone is different according to its principle of sound, is broadly divided into moving coil earphone, moving-iron type earphone and electrostatic
(electric capacity) formula earphone.
Moving coil earphone is present most common earphone forms, and it is that coil is fixed on vibrating diaphragm, is placed in by permanent magnet
In caused fixed magnetic field, signal passes through coil cutting magnetic line, so as to drive vibrating diaphragm vibration sounding together.Its advantage is：System
Make relatively easily, good linearity, distortion is small, frequency response is wide；Shortcoming is：Because the area of moving-coil unit in earphone is larger, and sending out
Need more space and air to participate in vibration during sound, therefore can not effectively control Lou sound phenomenon.
Moving-iron type earphone produces alternating magnetic field using electromagnet, and oscillating component is suspended in front of electromagnet by an iron plate,
Signal makes electromagnet magnetic field change when passing through electromagnet, so that iron plate vibration sounding.Its advantage is：Service life length,
Efficiency high；Shortcoming is：Distortion is big, and frequency response is narrow, is usually used in the telephone receiver of early stage.
The principle of electrostatic (electric capacity) formula earphone is that vibrating diaphragm is in the electric field of change, and vibrating diaphragm is very thin, can be as accurate as micron
Level, is polarized by High Level DC Voltage, polarizes what required electric energy was supplied by AC conversion or battery.Vibrating diaphragm is suspended on by two pieces of fixations
Metallic plate (stator) formed electrostatic field in, when audio signal is loaded on stator, electrostatic field changes, drive vibrating diaphragm
Vibration, vibrating diaphragm sounding is driven under the driving of electric field force.Single stator can also drive vibrating diaphragm, but under comparing, bimorph transducer
It is smaller to recommend form distortion.Because vibrating diaphragm is frivolous, innately deviation is slim and graceful transparent for the tonequality of electrostatic earphone, performance low frequency, sound
Thick and heavy and density is sympathetic slightly inferior.
To obtain more preferable tonequality, occurs plane diaphragm technology in the prior art.It is such as more popular on the market
OPPO PM series magnetic shakes flat film earphone, and by taking the earphone as an example, which employs plane diaphragm driver element, it is exhausted to be better than in the market
Most of earphone for using other driver elements.Its sound is to be produced by one very thin very light vibrating diaphragm by balance vibration
, its field system and the symmetrical design of wire, vibrating diaphragm uniformly promote, thus earphone can reach farthest sensitive
Degree and uniformity.Stability just because of vibrating diaphragm and the vibration of linear piston formula, it can just be able to ensure to reach minimum distortion, more
High uniformity and high analysis power.OPPO PM series earphones most unique distinction is set with two-sided spiral boosting voice coil loudspeaker voice coil
Meter, fill part and solve the influence that vibrating diaphragm is brought by physical attribute.Conductor is utilized therefore, it is possible to 100% ground, reaches higher utilization
Efficiency, and coil plane is distributed, and will not produce intermodulation distortion because of the effect of inductance as moving-coil earphone.
But inventor has found during the utility model is realized, the magnetic of the prior art flat film earphone that shakes also is deposited
Certain the defects of：Typically, same overall volume, the circular and square comparison of physical plane voice coil loudspeaker voice coil area, square hair
Sound area is more than 0.5-2 times circular of real area；Circular shell center needs a hemispheric sound guide unit to go in repairing
Heartfelt wishes press flow-disturbing problem of dtmf distortion DTMF；Two-sided aluminium foil needs to carry out the aluminium foil on conducting connection two sides, the aluminium foil on two sides in film both sides
All it is nanometer materials, very thin, manufacturing process is more complicated, and fraction defective is higher during production, increases single cost.
Utility model content
(1) purpose of utility model
For the drawbacks described above of prior art, technical problem to be solved in the utility model is：As how low cost carries
The tonequality of planar diaphragm speaker and earphone is risen, realizes that its distortion factor is low, high frequency response is comprehensive, parsing power is high, cost is low.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of planar diaphragm speaker, and it includes vibrational system
And magnetic circuit system；Wherein,
The vibrational system 2 includes the plane diaphragm and planar voice-coil being bonded to each other；
The magnetic circuit system includes the magnetic group 4 positioned at the vibrational system side；
The magnetic circuit system also includes magnetic conduction group 6, and the magnetic conduction group 6 is located at the magnetic group 4 back to the vibrational system
Side.
Preferably, the magnetic conduction group 6 is that strip discrete arranges the strip array to be formed or sheet discrete arrangement
The magnetic conduction sheet that the sheet-like array of formation or complete monoblock magnetic conduction sheet or polylith are spliced to form.
Preferably, the magnetic conduction group 6 and the corresponding arrangement of the magnetic group 4, both width and position correspond to respectively.
Preferably, in the planar diaphragm speaker：The overall edge of the magnetic conduction group 6 is more than the entirety of magnetic group 4
Edge.
Preferably, the magnetic group 4 is the strip array magnetic group formed by the magnetic strip arrangements of discrete.
Preferably, the strip array magnetic group of the magnetic group 4 includes 3-15 root magnetic stripes.
Preferably, the strip array magnetic group of the magnetic group 4 includes 6-9 root magnetic stripes.
Preferably, the strip array magnetic group of the magnetic group 4 includes 7 or 8 magnetic stripes.
Preferably, the planar voice-coil is the film with circuit layout.
Preferably, the film is the thin film circuit made of conductive film.
Preferably, the shape of the circuit layout and the magnetic circuit system is adapted.
Preferably, the magnetic circuit system also includes magnetic group supporting plate 1, and the magnetic group 4 and the magnetic conduction group 6 are arranged on described
In the mounting groove of magnetic group supporting plate 1.
Preferably, the magnetic conduction group 6 and the magnetic group supporting plate 1 are one-step die casting thing.
Preferably, the vibrational system also includes vibrating diaphragm supporting plate 22；Wherein,
The side of the vibrating diaphragm supporting plate 22 is bonded the plane diaphragm；The vibrating diaphragm supporting plate 22, the plane diaphragm
With the planar voice-coil arranged stacked, plane vibration diaphragm group is formed, is provided with through hole thereon.
The utility model additionally provides a kind of earphone, and it includes the planar diaphragm speaker described in any of the above-described.
(3) beneficial effect
The planar diaphragm speaker and earphone that above-mentioned technical proposal is provided, the magnetic circuit for closing magnetic group is assembled using magnetic conduction, protected
The magnetic flux of magnet, which maximizes, in card magnetic group applies in magnetic field, prevents that magnetic is exposed, magnetic group is improved while volume is controlled
Effect is driven, effectively improves tonequality.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the utility model one embodiment midplane vibrating membrane loudspeaker cross-sectional view.
In figure, 1- magnetic group supporting plates；2- vibrational systems；22- vibrating diaphragm supporting plates；4- magnetic groups；6- magnetic conduction groups.
Embodiment
To make the purpose of this utility model, content and advantage clearer, with reference to the accompanying drawings and examples, to this reality
It is described in further detail with new embodiment.
Planar diaphragm speaker of the prior art, such as OPPO PM series earphones, employ two-sided spiral boosting sound
Circle, although realizing the planarization of vibrating diaphragm to a certain extent, has reached relatively reasonable tonequality, and its manufacturing process is complicated,
Yields is low, and actual sounding effect is also unsatisfactory, and product receives many restrictions.It is low, high in order to obtain a kind of distortion factor
Earphone comprehensive, that parsing power is high, cost is low is answered in frequency response, and providing a kind of plane diaphragm first in the utility model one embodiment raises
Sound device, a kind of earphone is further provided in further embodiment, the magnetic circuit system for closing magnetic group is assembled by magnetic conduction, in limited sky
The interior magnetic circuit for obtaining saturation, so as to which the tonequality of plane diaphragm is substantially improved.Specifically, in the utility model embodiment
Scheme is as follows.
Embodiment 1
In one embodiment of the present utility model, planar diaphragm speaker includes vibrational system and magnetic circuit system.Reference
Shown in Fig. 1, vibrational system 2 includes the plane diaphragm and planar voice-coil being bonded to each other；Magnetic circuit system includes being located at the vibration system
The magnetic group of unified side, the magnetic circuit system also include magnetic conduction group 6, and the magnetic conduction group 6 is located at the reverse side of magnetic group 4, carries out antimagnetic
Conducting.Planar diaphragm speaker in the utility model embodiment, by inputting the tone currents of change in the vibrational system,
Electromagnetic field is produced, is then moved up and down in the effect of the magnetic force of the magnetic circuit system, produces voice signal.
In embodiment of the present utility model, magnetic group 4 is the strip array magnetic group formed by the magnetic strip arrangements of discrete.By
For the magnetic sheet relative to full wafer, the volume of magnetic stripe is smaller, and manufacturing process is simple, and the difficulty that magnetizes is low, and the magnetic to magnetize is more equal
Even controllable, yields is high and without secondary operation opening, because the production difficulty and cost of product can be greatly reduced, realizes extensive
The production of mass, promote the popularization of plane diaphragm equipment.
Alternatively, magnetic group 4 can be formed by 3-15 root magnetic strip arrangements, and magnetic stripe can be rectangular bars shape magnetic stripe；It is preferred that 6-9
Root, it is optimal with 7 or 8, in the environment of stock size earphone uses loudspeaker, obtains low cost and saturable magnetic circuit
Doulbe-sides' victory effect.
In the present embodiment, magnetic conduction group 6 can be that strip discrete arranges the strip array to be formed or sheet discrete
Arrange the sheet-like array formed or the magnetic conduction sheet that complete monoblock magnetic conduction sheet or polylith are spliced to form；Magnetic conduction group 6 is selected
One or more in metal, alloy, silicon, carbon, graphite, graphene, ceramics and composite are made, and are achieved in magnetic group 4
Antimagnetic conducting is carried out, ensures that the magnetic flux of magnet in magnetic group 4 maximizes and applies in magnetic field, prevent that magnetic is exposed.Preferably, magnetic conduction group
6 material is iron.
Certainly, in some alternative embodiments of the present utility model, magnetic conduction group is alternatively complete tablet (i.e. magnetic conduction
Plate).The magnetic conductive board of full wafer can be provided with strip or lattice-shaped opening in the gap corresponding position of magnetic stripe；Certainly, what is be not open completely leads
Magnetic sheet is also a kind of optional scheme.In addition, in the utility model in some extreme embodiments, in order to control whole sounding list
The volume of member, can not also use magnetic conduction group.Therefore, relevant technical staff in the field should be appreciated that the specific of magnetic conduction group herein
Set-up mode is not construed as the limitation to the utility model embodiment.
On this basis, in order to further reduce cost, preferably magnetic conduction group 6 is the strip battle array that strip separation arrangement is formed
Row, by the magnetic conduction group 6 and the corresponding arrangement of magnetic group 4, the i.e. width and position pair of the magnetic conduction bar of magnetic conduction group 6 and the magnetic stripe of magnetic group 4
Should.Generally for magnetic conduction group made of iron, because of the effect of magnetic force, after the magnetic conduction bar of magnetic conduction group 6 and the magnetic stripe of magnetic group 4 can adsorb
It is bonded to each other.
Optionally, in addition, in the planar diaphragm speaker, it is whole that the overall edge of the magnetic conduction group 6 is more than the magnetic group 4
The edge of body.By the slightly larger magnetic conduction group in edge, certain parcel can be formed to magnetic group, so as to further lock magnetic flux, is prevented
Leak-stopping magnetic, and then ensure to obtain saturable magnetic circuit.Alternatively, magnetic conduction group parcel magnetic group dividing plate and the magnetic being arranged on magnetic group dividing plate
Group, or magnetic conduction group directly wrap up magnetic group (no longer setting magnetic group dividing plate).
Magnetic circuit system also includes magnetic group supporting plate 1, and magnetic group supporting plate 1 opens up mounting groove, and magnetic group 4 and magnetic conduction group 6 are arranged on
In the mounting groove of magnetic group supporting plate 1, magnetic group supporting plate 1 is used to realize that the structure of magnetic circuit system and vibrational system assembles.
In order to realize the lighting of whole loudspeaker, magnetic group supporting plate 1 is made from plastics or aluminium, and in magnetic group supporting plate
Array hole is opened on 1, for transmitting sound and loss of weight.
Magnetic conduction group 6 and magnetic group supporting plate 1 pass through plastic cement one-step die casting, concealed to have simplified structure, while play again
The effect of ruggedized construction.
Vibrational system includes plane diaphragm and the planar voice-coil being evenly arranged on the side surface of vibrating diaphragm one.Wherein, surface sound
Enclose the film preferably with certain circuit layout, such as the thin film circuit made of conductive film；Optionally, in addition, plane
The strip array of circuit layout (width of circuit, gap, winding displacement and turn around form etc.) and magnetic circuit system in voice coil loudspeaker voice coil is adapted.
In embodiment of the present utility model, when inputting the tone currents of change to planar voice-coil, its circuit can produce the electricity of change
Magnetic field, thus moved up and down in the magneticaction of magnetic circuit system, drive diaphragm oscillations to produce voice signal.
Further, vibrational system also includes：Vibrating diaphragm supporting plate 22, another side surface of vibrating diaphragm are attached to vibrating diaphragm supporting plate 22
Side, to realize the support to vibrating diaphragm by vibrating diaphragm supporting plate 22, it is ensured that the flatness of vibrating diaphragm.
Wherein, vibrating diaphragm supporting plate 22, vibrating diaphragm, planar voice-coil arranged stacked, plane vibration diaphragm group is formed, is provided with thereon logical
Hole, using the electricity that connects realized through the through hole in plane vibration diaphragm group to planar voice-coil, and realize the compact cloth of internal structure
Office.Preferably, vibrational system also includes being arranged in the conductive foil of the opposite side of vibrating diaphragm supporting plate 22, and electricity is connect with ensure vibrational system
And/or the good input of electric power.
Wherein, the vibrating diaphragm supporting plate 22 and the conductive foil are collectively forming similar to printed circuit board (PCB) (PCB, Printed
Circuit Board) construction, i.e., described conductive foil is the circuit layer being printed in the vibrating diaphragm supporting plate 22, passes through the electricity
Road floor carrys out external external power source, so as to realize the power supply from outside to planar voice-coil.
Alternatively, the conductive film in planar voice-coil and conductive foil are by one kind in metal, alloy and composite conducting material
Or a variety of it is made.As a preferable example, the conductive film is aluminium foil, the conductive foil is copper foil.Certainly, this area
Person skilled will be understood that above-mentioned preferred exemplary is not construed as the limitation to the utility model embodiment.
In the present embodiment, planar voice-coil is evenly arranged on the side surface of vibrating diaphragm one, relative to vibrating diaphragm two of the prior art
Side sets the mode of double-sided aluminum foil, and driving force uniform force, caused sound is more natural, and manufacturing process is simplified, yield
Improve, cost reduces.
Technical scheme described in the present embodiment, by using plane diaphragm and strip array magnetic group, improve plane diaphragm hair
The efficiency and sound quality of sound；By setting the vibrational system and magnetic circuit system of compact, the mounting structure complexity is effectively whole
Close, reduce 30%-50% assembly program；Using improved planar voice-coil arrangement, the sensitive of sounding greatly improved
Degree and sound pressure level.
The present embodiment loudspeaker can reach the sound quality of really fever level, can surmount existing moving-coil speaker easily,
Such as：The moving-coil speaker distortion factor is high, and in 2%-3%, the present embodiment planar diaphragm speaker distortion factor falls below 0.1%-
1%；Moving-coil speaker high frequency response does not exist comprehensively, 15-35K, and the present embodiment planar diaphragm speaker is improved to frequency range occurs
5-50K；Moving-coil speaker begins to produce parsing power decline when parsing power operating power more than more than 60%, and sounding chaos is not
Clearly, load is more big more serious, and the present embodiment planar diaphragm speaker can be parsed in the range of entirely at full capacity with smooth working
Power is higher than moving-coil speaker by more than 50%.
Embodiment 2
Based on embodiment 1 provided etc. magnetic field symmetrical magnetic circuits planar diaphragm speaker, the present embodiment provides a kind of ear
Machine, the earphone include planar diaphragm speaker and associated shell structure described in embodiment 1 etc., realize that a kind of distortion factor is low, high
Earphone comprehensive, that parsing power is high, cost is low is answered in frequency response, reaches the requirement of " the fever earphone " of real meaning.Alternatively, this practicality
Earphone in new embodiment can be wear-type, supra-aural, rear mounted, ear type or In-Ear any one, loudspeaker
Unit required design is into corresponding size.Certainly, because one side magnetic circuit system can significantly mitigate lightweight packages so that earphone is whole
Body size and counterweight are smaller, it is preferred to use ear type or In-Ear Headphones set the loudspeaker group of the utility model embodiment
Part.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of planar diaphragm speaker, it is characterised in that including vibrational system and magnetic circuit system；Wherein,
The vibrational system (2) includes the plane diaphragm and planar voice-coil being bonded to each other；
The magnetic circuit system includes the magnetic group (4) positioned at the vibrational system side；
The magnetic circuit system also includes magnetic conduction group (6), and the magnetic conduction group (6) is located at the magnetic group (4) back to the vibrational system
Side.
2. planar diaphragm speaker as claimed in claim 1, it is characterised in that the magnetic conduction group (6) is strip discrete
Arrange formed strip array or sheet discrete arrange the sheet-like array to be formed or complete monoblock magnetic conduction sheet or
The magnetic conduction sheet that polylith is spliced to form.
3. planar diaphragm speaker as claimed in claim 1, it is characterised in that the magnetic conduction group (6) and the magnetic group (4) are right
It should arrange, both width and position correspond to respectively.
4. planar diaphragm speaker as claimed in claim 1, it is characterised in that in the planar diaphragm speaker：
The overall edge of the magnetic conduction group (6) is more than the overall edge of the magnetic group (4).
5. planar diaphragm speaker as claimed in claim 1, it is characterised in that the magnetic group (4) is the magnetic stripe by discrete
Arrange the strip array magnetic group formed.
6. planar diaphragm speaker as claimed in claim 1, it is characterised in that the planar voice-coil is with circuit layout
Film.
7. planar diaphragm speaker as claimed in claim 6, it is characterised in that the film is thin made of conductive film
Film circuit.
8. planar diaphragm speaker as claimed in claim 6, it is characterised in that the circuit layout and the magnetic circuit system
Shape is adapted.
9. planar diaphragm speaker as claimed in claim 1, it is characterised in that the magnetic circuit system also includes magnetic group supporting plate
(1), the magnetic group (4) and the magnetic conduction group (6) are arranged in the mounting groove of the magnetic group supporting plate (1).
10. a kind of earphone, it is characterised in that including the planar diaphragm speaker any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467325.XU CN206963023U (en) | 2017-04-28 | 2017-04-28 | Planar diaphragm speaker and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467325.XU CN206963023U (en) | 2017-04-28 | 2017-04-28 | Planar diaphragm speaker and earphone |
Publications (1)
| Publication Number | Publication Date |
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| CN206963023U true CN206963023U (en) | 2018-02-02 |
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ID=61373897
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720467325.XU Active CN206963023U (en) | 2017-04-28 | 2017-04-28 | Planar diaphragm speaker and earphone |
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| CN (1) | CN206963023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107172543A (en) * | 2017-04-28 | 2017-09-15 | 北京欧意智能科技有限公司 | Planar diaphragm speaker and earphone |
-
2017
- 2017-04-28 CN CN201720467325.XU patent/CN206963023U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107172543A (en) * | 2017-04-28 | 2017-09-15 | 北京欧意智能科技有限公司 | Planar diaphragm speaker and earphone |
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