CN209572154U - Small-sized plane vibrating membrane loudspeaker and earphone - Google Patents
Small-sized plane vibrating membrane loudspeaker and earphone Download PDFInfo
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- CN209572154U CN209572154U CN201920478441.0U CN201920478441U CN209572154U CN 209572154 U CN209572154 U CN 209572154U CN 201920478441 U CN201920478441 U CN 201920478441U CN 209572154 U CN209572154 U CN 209572154U
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Abstract
The utility model relates to a kind of small-sized plane vibrating membrane loudspeaker and earphones, including tapered cavity, outside shell, lead sound cone, magnetic circuit system, plane diaphragm, the tapered cavity and outside shell snapping form conical cavity, it is described to lead sound cone, vibrational system, magnetic circuit system is in turn secured to from top to bottom in the conical cavity, the magnetic circuit system and leading is provided in the first pcb board and the second pcb board being arranged above and below in conical cavity between sound cone, the plane diaphragm is bonded between first pcb board and the second pcb board, the tip for leading sound cone puts in the taper inner of the tapered cavity.Not only sounding quality is high for the utility model, but also by loudspeaker optimized integral structure, realizes miniaturization, by the headphone product being applied to originally, it further reduces to for built-in earplug product, manufacturing cost and complicated manufacturing process, good economy performance is greatly reduced.
Description
Technical field
The utility model relates to speaker technology fields, and in particular to a kind of small-sized plane vibrating membrane loudspeaker and earphone.
Background technique
Currently used earphone is broadly divided into moving coil earphone, moving-iron type earphone and electrostatic according to its principle of sound difference
(capacitor) formula earphone.
Moving coil earphone is present most common earphone forms, it is that coil is fixed on vibrating diaphragm, is placed in by permanent magnet
In the fixed magnetic field of generation, signal passes through coil cutting magnetic line, to drive vibrating diaphragm vibration sounding together.Its advantage is that: system
Make relatively easily, good linearity, distortion is small, frequency response is wide；The disadvantage is that: since the area of moving-coil unit in earphone is larger, and sending out
It needs more space and air to participate in vibration during sound, therefore can not effectively control leakage sound phenomenon.
Moving-iron type earphone generates 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, to make iron plate vibration sounding.Its advantage is that: long service life,
It is high-efficient；The disadvantage is that: distortion is big, and frequency response is narrow, is usually used in the telephone receiver of early stage.
The principle of electrostatic (capacitor) formula earphone is that vibrating diaphragm is in the electric field of variation, and vibrating diaphragm is very thin, can be as accurate as micron
Grade, 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
Metal plate (stator) formed electrostatic field in, when audio signal is loaded on stator, electrostatic field changes, drive vibrating diaphragm
Vibration drives vibrating diaphragm sounding 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.Since vibrating diaphragm is frivolous, the sound quality of electrostatic earphone is innately biased to slim and graceful transparent, performance low frequency, sound
Thick and heavy and density is sympathetic slightly inferior.
But moving-coil parses and begins to generate parsing power decline chaos unclear load when power operating power is more than 60% or more
More bigger, more serious；Traditional moving-coil speaker has arrived the limit by industry development and has been difficult again the progress of the acoustics logic such as physical structure
Innovation upgrading；The acoustic characteristic of traditional moving-coil speaker is difficult to carry out high-quality upgrading in original structure, and every raising is a bit
The cost that sound quality is paid thus wants several times even more times, and economical property is very poor；The vibrating diaphragm of traditional moving-coil speaker is difficult
Accomplish nanometer grade thickness, want that sound quality, which is substantially improved, to be difficult, the sound that more high parsing power is presented has arrived the limit.Plane diaphragm
In actual production manufacturing process, volume is difficult to accomplish very little, the mostly volume of headphone loadspeaker structure, can not accomplish
In-Ear ear phone structure.
Utility model content
In order to solve the problems existing in the prior art, the utility model provides a kind of small-sized plane vibrating membrane loudspeaker and earphone,
Not only sounding quality is high, but also by loudspeaker optimized integral structure, realizes miniaturization, is produced by the headphone being applied to originally
Product further reduce to for built-in earplug product, manufacturing cost and complicated manufacturing process, warp are greatly reduced
Ji property is good.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of small-sized plane vibrating membrane loudspeaker, including tapered cavity, outside shell, lead sound cone, magnetic circuit system, plane vibration
Film, the tapered cavity and outside shell snapping form conical cavity, and sound cone, vibrational system, the magnetic circuit system of leading is from upper
It is in turn secured under in the conical cavity, the magnetic circuit system and leads to be provided in conical cavity between sound cone and present
The first pcb board and the second pcb board of lower arrangement, are bonded the plane diaphragm, institute between first pcb board and the second pcb board
It states and leads the tip of sound cone and put in the taper inner of the tapered cavity, voice coil is placed in the plane diaphragm side.
Preferably, the inside structure of first pcb board and the second pcb board is identical and is irregular or regular ring-like
Structure.
In any of the above-described scheme preferably, the magnetic circuit system includes magnetic circuit support frame, magnetic conduction iron plate, magnet group,
The magnetic circuit support frame is located at the top of the magnetic conduction iron plate, and the magnet group is set in the magnetic circuit support frame and and magnetic conduction
Iron plate connection.
In any of the above-described scheme preferably, the magnet group includes more equidistant bar-shaped magnets side by side, bar shaped
Magnet is arranged on the magnetic circuit support frame immediately below the second pcb board inner ring.
In any of the above-described scheme preferably, the magnetic conduction iron plate connect with the inner wall of the tapered cavity.
In any of the above-described scheme preferably, at least two are fixed in a ring on the bottom periphery for leading sound cone
Array leads acoustic pressure bar, described to lead acoustic pressure bar and the inner wall of tapered cavity is fixed.
In any of the above-described scheme preferably, the magnetic circuit support frame immediately below the second pcb board inner ring is equipped with more
A equidistant magnet detent arranged and cooperate with bar-shaped magnet, multiple bar-shaped magnets are individually positioned in corresponding magnet detent
It is interior.
In any of the above-described scheme preferably, strip-shaped hole is set on the magnetic conduction iron plate between adjacent two bar-shaped magnets.
In any of the above-described scheme preferably, the plane diaphragm shaking part is symmetrical structure up and down.
The utility model further includes a kind of earphone, including small-sized plane vibrating membrane loudspeaker described in any of the above embodiments.
Compared with prior art, small-sized plane vibrating membrane loudspeaker and earphone provided by the utility model have below beneficial to effect
Fruit:
1, by using plane diaphragm vocal structure, so that sound wave is emitted and is propagated more consistent, generated when pushing air
Sound kinetic energy more evenly, sound cone will be led and be set as taper, lead sound cone play collect plane diaphragm vibration generate sound,
Sound density is improved, and by adjusting the distance and shape for leading sound cone and tapered cavity, makes to lead sound cone and tapered cavity
Between spacing it is different, to realize adjusting and change sound property, adjust optimization sound frequency curve, needed for reaching not in unison
Learn the sound of characteristic；
2, more bar-shaped magnets are set to form magnetic group, the magnetic flux of magnet is different with bar-shaped magnet in magnetic circuit system
Combination is easier to adjust the size of magnetic energy；
3, since plane diaphragm using nano material and is planar structure, the geomery of plane diaphragm can be according to need
Arbitrarily devised adjusting is wanted, to meet the sound product demand of different-style and different stage, is produced for low-cost high-quality audio
The development and application of product provides more preferable more preferably solution；
4, plane diaphragm is carried out miniaturization processing by the utility model, and in magnetic circuit system and the cooperation for leading sound cone
Under, loudspeaker overall structure is effectively integrated, it is compact-sized, overall structure is reduced, by the headphone being applied to originally
Product is further reduced to for built-in earplug product, more conducively easy to carry in use, be greatly reduced the manufacturing at
This and complicated manufacturing process, have economical well, answer the plane diaphragm earphone products of low-cost high-quality can
With more efficient speaker system.
Detailed description of the invention
Fig. 1 is the overall structure signal of a preferred embodiment of small-sized plane vibrating membrane loudspeaker provided by the utility model
Figure；
Fig. 2 is the structural schematic diagram of embodiment illustrated in fig. 1.
Explanation: 1, tapered cavity is marked in figure；2, sound cone is led；3, the first pcb board；4, plane diaphragm；5, the 2nd PCB
Plate；6, magnetic circuit support frame；7, bar-shaped magnet；8, magnetic conduction iron plate；9, outside shell.
Specific embodiment
In order to be further understood that the summary of the invention of the utility model, this reality is elaborated below in conjunction with specific embodiment
With novel.
As shown in Figs. 1-2, according to an embodiment of small-sized plane vibrating membrane loudspeaker provided by the utility model, including it is tapered
Cavity 1, outside shell 9 lead sound cone 2, magnetic circuit system, plane diaphragm 4, and the tapered cavity 1 is formed with 9 snapping of outside shell
Conical cavity, sound cone 2, vibrational system, the magnetic circuit system of leading is in turn secured to from top to bottom in the conical cavity, described
Magnetic circuit system and leading is provided in the first pcb board 3 and the second pcb board 5 being arranged above and below in conical cavity between sound cone 2,
The plane diaphragm 4 is bonded between first pcb board 3 and the second pcb board 5, the tip for leading sound cone 2 puts in the cone
Voice coil is placed in the taper inner of cavity 1,4 side of plane diaphragm, by inputting the tone currents of variation into voice coil, produces
Raw electromagnetic field, then drives plane vibration to generate vibration and generate voice signal under the magneticaction of the magnetic circuit system.It will
It leads sound cone 2 and is set as taper, lead sound cone 2 and play the sound for collecting the vibration generation of plane diaphragm 4, improve sound density, and
And by adjusting the distance and shape for leading sound cone and tapered cavity, keep the spacing led between sound cone and tapered cavity different,
To realize adjusting and change sound property, optimization sound frequency curve is adjusted, the sound of different acoustic characteristics needed for reaching.
Further, first pcb board 3 is identical with the inside structure of the second pcb board 5 and is irregular or regular ring
Type structure plays support fixed function to plane diaphragm 4, while guaranteeing the flatness of plane diaphragm 4.
Further, the magnetic circuit system includes magnetic circuit support frame 6, magnetic conduction iron plate 8, magnet group, the magnetic circuit support frame 6
Positioned at the top of the magnetic conduction iron plate 8, the magnet group is set in the magnetic circuit support frame 6 and contacts with magnetic conduction iron plate 8.
Further, the magnet group includes more bar-shaped magnets 7 equidistantly side by side, preferably 2-15 root bar-shaped magnet,
Bar-shaped magnet 7 is arranged on the magnetic conduction iron plate 8 immediately below 5 inner ring of the second pcb board.The volume of bar-shaped magnet 7 is smaller, manufacture
Simple process, the difficulty that magnetizes are low, and the magnetism to magnetize is more evenly controllable, reduces the production difficulty and cost of product, realize big rule
The production of mould mass pushes the universal of the In-Ear product of plane diaphragm 4, and bar-shaped magnet 7 is contacted with magnetic conduction iron plate 8, makes bar shaped
The magnetic flux maximization of magnet 7 is applied in magnetic field, leakage field is prevented, to obtain saturable magnetic circuit.
Further, the magnetic conduction iron plate 8 is fixedly connected with the inner wall of the tapered cavity 1.
Further, at least two circular arrays are fixed on the bottom periphery for leading sound cone 2 leads acoustic pressure bar,
Lead the number preferred 2-6 of acoustic pressure bar, it is described to lead acoustic pressure bar and the inner wall of tapered cavity 1 is fixed, the setting of acoustic pressure bar is led, it is not only right
It leads sound cone 2 and plays fixed function, and the sound that the vibration of plane diaphragm 4 can be made to generate is from leading sound cone 2 and tapered cavity 1
Between gap pass through, improve sound density.
Further, the magnetic circuit support frame 6 immediately below 5 inner ring of the second pcb board be equipped with it is multiple it is equidistant arrangement and
With the magnet detent of bar-shaped magnet cooperation, multiple bar-shaped magnets 7 are individually positioned in corresponding magnet detent.Magnet detent is used
In every bar magnet 7 is separated holding equidistance, adjacent bar magnet 7 is made to arrange uniform ground, multiple magnet detents etc.
Spacing arrangement.
Further, strip-shaped hole is set on the magnetic conduction iron plate 8 between two neighboring bar-shaped magnet 7, facilitates the propagation of sound
And loss of weight, multiple strip-shaped holes equally arrange.
Further, the shaking part of the plane diaphragm 4 is the film of symmetric shape up and down, described to lead sound cone
2 and tapered cavity 1 be pyramidal structure, can be realized with ear hole it is mating, facilitate inject ear road in, it is described to lead sound
The tip of cone 2 puts in the taper inner of the tapered cavity 1.
The sounding quality of the present embodiment loudspeaker is high, for example, the moving-coil speaker distortion factor is high, in 1%-3%, the present embodiment
4 loudspeaker distortions degree of plane diaphragm falls below 0.1%-1%；Moving-coil speaker high frequency response is not 15-35K very comprehensively, this reality
It applies 4 loudspeaker of a plane diaphragm and is improved to 5-50K for bandwidth occurs；It is more than 60% or more that moving-coil speaker, which parses power operating power,
When begin to generate distortion, sounding chaos is unclear, and the bigger load the more serious, and 4 loudspeaker of the present embodiment plane diaphragm is entirely full
It is higher than moving-coil speaker by 30% or more can to parse power with smooth working in the range of load.
Embodiment 2
A kind of 1 small-sized plane vibrating membrane loudspeaker provided, the present embodiment also provide a kind of earphone based on the above embodiment, wrap
Small-sized plane vibrating membrane loudspeaker described in above-described embodiment 1 is included, has the distortion factor low, the narrow advantage of frequency, optionally, earphone occurs
It can be In-Ear or PlayGear Stealth.
Compared with prior art, the present embodiment has the advantages that
Plane diaphragm is carried out miniaturization processing by the utility model, and in magnetic circuit system and under leading the cooperation of sound cone,
Loudspeaker overall structure is effectively integrated, it is compact-sized, overall structure is reduced, is produced by the headphone being applied to originally
Product further reduce and manufacturing cost and complicated manufacturing process are greatly reduced to built-in earplug product, have very
Good is economical, makes the plane diaphragm earphone products of low-cost high-quality that can apply more efficient speaker system.
It will be apparent to those skilled in the art that the utility model includes the summary of the invention and specific embodiment party of description above
Any combination of each section shown by formula part and attached drawing, as space is limited and to keep specification concise without by these groups
Each scheme constituted is closed to describe one by one.Within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of small-sized plane vibrating membrane loudspeaker, it is characterised in that: including tapered cavity, outside shell, lead sound cone, magnetic circuit system
System, plane diaphragm, the tapered cavity and outside shell snapping form conical cavity, described to lead sound cone, vibrational system, magnetic circuit
System is in turn secured to from top to bottom in the conical cavity, and the magnetic circuit system and leading in conical cavity between sound cone is set
It is equipped in the first pcb board and the second pcb board being arranged above and below, is bonded the plane between first pcb board and the second pcb board
Vibrating diaphragm, the tip for leading sound cone put in the taper inner of the tapered cavity, and voice coil is placed in the plane diaphragm side.
2. small-sized plane vibrating membrane loudspeaker according to claim 1, it is characterised in that: first pcb board and the 2nd PCB
The inside structure of plate is identical and is irregular or regular ring type structure.
3. small-sized plane vibrating membrane loudspeaker according to claim 1, it is characterised in that: the magnetic circuit system includes magnetic circuit branch
Support, magnetic conduction iron plate, magnet group, the magnetic circuit support frame are located at the top of the magnetic conduction iron plate, and the magnet group is set to institute
It states in magnetic circuit support frame and is connect with magnetic conduction iron plate.
4. small-sized plane vibrating membrane loudspeaker according to claim 3, it is characterised in that: the magnet group includes between more equal
Away from bar-shaped magnet side by side, bar-shaped magnet is arranged on the magnetic circuit support frame immediately below the second pcb board inner ring.
5. small-sized plane vibrating membrane loudspeaker according to claim 4, it is characterised in that: the magnetic conduction iron plate with it is described tapered
The inner wall of cavity connects.
6. small-sized plane vibrating membrane loudspeaker according to claim 1, it is characterised in that: the bottom periphery for leading sound cone
On be fixed at least two circular arrays lead acoustic pressure bar, it is described to lead acoustic pressure bar and the inner wall of tapered cavity is fixed.
7. small-sized plane vibrating membrane loudspeaker according to claim 6, it is characterised in that: the second pcb board inner ring just under
The magnetic circuit support frame of side is equipped with multiple equidistant arrangements and the magnet detent with bar-shaped magnet cooperation, multiple bar-shaped magnet difference
It is placed in corresponding magnet detent.
8. small-sized plane vibrating membrane loudspeaker according to claim 5, it is characterised in that: between adjacent two bar-shaped magnets
Strip-shaped hole is set on magnetic conduction iron plate.
9. small-sized plane vibrating membrane loudspeaker according to claim 1, it is characterised in that: the plane diaphragm shaking part is
Symmetrical structure up and down.
10. a kind of earphone, it is characterised in that: including small-sized plane vibrating diaphragm loudspeaking described in any one of the claims 1-9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920478441.0U CN209572154U (en) | 2019-04-10 | 2019-04-10 | Small-sized plane vibrating membrane loudspeaker and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920478441.0U CN209572154U (en) | 2019-04-10 | 2019-04-10 | Small-sized plane vibrating membrane loudspeaker and earphone |
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| CN209572154U true CN209572154U (en) | 2019-11-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066978A1 (en) * | 2022-09-30 | 2024-04-04 | 华为技术有限公司 | Loudspeaker and electronic device |
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2019
- 2019-04-10 CN CN201920478441.0U patent/CN209572154U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066978A1 (en) * | 2022-09-30 | 2024-04-04 | 华为技术有限公司 | Loudspeaker and electronic device |
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