CN110248290A - Waterproof ventilated membrane and its mold and manufacturing method and loudspeaker - Google Patents
Waterproof ventilated membrane and its mold and manufacturing method and loudspeaker Download PDFInfo
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- CN110248290A CN110248290A CN201910434893.3A CN201910434893A CN110248290A CN 110248290 A CN110248290 A CN 110248290A CN 201910434893 A CN201910434893 A CN 201910434893A CN 110248290 A CN110248290 A CN 110248290A
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- die unit
- ventilated membrane
- mold
- hole
- waterproof ventilated
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- 239000012528 membrane Substances 0.000 title claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 51
- 239000000758 substrate Substances 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims description 67
- 239000000463 material Substances 0.000 claims description 46
- 238000012545 processing Methods 0.000 claims description 33
- 238000001259 photo etching Methods 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 17
- 238000000992 sputter etching Methods 0.000 claims description 14
- 238000003486 chemical etching Methods 0.000 claims description 13
- 238000003754 machining Methods 0.000 claims description 12
- 238000003672 processing method Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000010146 3D printing Methods 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 8
- 238000009760 electrical discharge machining Methods 0.000 claims description 8
- -1 nonmetallic Substances 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 238000005323 electroforming Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000011344 liquid material Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 claims description 2
- 230000008016 vaporization Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 80
- 238000010586 diagram Methods 0.000 description 24
- 238000004512 die casting Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 13
- 238000000465 moulding Methods 0.000 description 7
- 238000004080 punching Methods 0.000 description 7
- 239000002356 single layer Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005234 chemical deposition Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 238000004090 dissolution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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- 239000011148 porous material Substances 0.000 description 1
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- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2207/00—Details of diaphragms or cones for electromechanical transducers or their suspension covered by H04R7/00 but not provided for in H04R7/00 or in H04R2307/00
- H04R2207/021—Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Multimedia (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of waterproof ventilated membrane and its mold and manufacturing method and the loudspeaker with the waterproof ventilated membrane.The mold of the waterproof ventilated membrane includes the first die unit and the second die unit, each die unit includes substrate and multiple cylinders, the cylinder is fixed on the first surface of the substrate, and it is spaced apart from each other between the multiple cylinder, the first surface of the substrate of first die unit faces and parallel to the first surface of the substrate of second die unit, and one or more of one or more of multiple cylinders of the first die unit and multiple cylinders of the second die unit are oppositely arranged.In this way, waterproof ventilated membrane obtained can not only guarantee logical acoustic mass of ventilating, there can also be enough film thicknesses, thereby may be ensured that waterproof and breathable film strength, to improve its anti-water depth.
Description
[technical field]
The invention belongs to Microspeaker field, be more particularly to a kind of waterproof ventilated membrane and its mold and manufacturing method with
And the loudspeaker with the waterproof ventilated membrane.
[background technique]
Existing smart phone, many equipment such as tablet computer and the wrist-watch that can be conversed have waterproof requirement.In order to reach
Better waterproof effect, best bet are exactly made into equipment totally-enclosed.As wireless charging and the extensive of wireless headset are answered
With, smart phone, the hole in the equipment such as tablet computer and the wrist-watch that can be conversed is fewer and fewer, and the hole left is only left for acoustic pressure
The microphone aperture of input and the speaker hole exported for acoustic pressure.This is because in order to allow sound preferably to transmit, sound transmission
Path cannot completely enclose.And how to guarantee that the path of endless totally enclosed sound transmission can waterproof be exactly effectively one
A problem to be solved.
Current technology is to do water-protected enclosure using waterproof ventilated membrane.The waterproof ventilated membrane now generally used is all organic material
Material, on film there are many micron level aperture, sound can smoothly by these aperture water due to tension without
Method is by these apertures, to realize the water-proof function on acoustic transmission path.But due to technique, on film
Hole accomplish sufficiently small, this tunic must be made thin.Organic material itself is also relatively soft, is very easy to damage, installation process
Middle touched by hand will damage, and also need to design special protection in practical application.Secondly as film strength is insufficient, energy
The hydraulic pressure enough born, that is, the depth of waterproof have the upper limit.
Current technology is that one layer of waterproof ventilated membrane is attached to piece of metal on piece, there is macropore, the gold between hole on sheet metal
Belong to the anti-pressure ability that structure reinforces organic film as reinforcing rib.But the anti-pressure ability of organic film itself is limited, even if there is metal
Structural strengthening is also difficult to meet the higher and higher waterproof requirement that more and more new products propose now.
Therefore, it is necessary to propose a kind of improved technical solution to overcome the above problem.
[summary of the invention]
The purpose of the present invention is to provide a kind of waterproof ventilated membrane and its mold and manufacturing method and have the waterproof saturating
The loudspeaker of air film, uses mold that waterproof ventilated membrane is made by die casting method, which can guarantee that ventilation is logical
Acoustic mass, it is possible to have enough film thicknesses thereby may be ensured that waterproof and breathable film strength.
According to an aspect of the present invention, the present invention provides a kind of mold of waterproof ventilated membrane comprising: the first mold list
Member and the second die unit, each die unit includes substrate and multiple cylinders, and the cylinder is fixed on the first of the substrate
It on surface, and is spaced apart from each other between the multiple cylinder, the first surface of the substrate of the first die unit faces and parallel to institute
State the first surface of the substrate of the second die unit, one or more of multiple cylinders of the first die unit and the second mold
One or more of multiple cylinders of unit are oppositely arranged, the opposite cylinder of the first die unit and the second die unit
End is spaced apart from each other or contacts.
According to another aspect of the present invention, the present invention provides a kind of manufacturer using mold manufacture waterproof ventilated membrane
Method, the manufacturing method include: to place the first die unit and the second die unit in opposite directions, at this time the base of the first die unit
The first surface of plate faces and parallel to the first surface of the substrate of second die unit, multiple columns of the first die unit
One or more of one or more of body and multiple cylinders of the second die unit are oppositely arranged, the first mold of Xiang Suoshu
Packing material is injected between unit and the second die unit, so that packing material is filled in the first die unit and the second mold
Between the substrate of unit；It is demoulded, the packing material after casting is detached from from the mold of the waterproof ventilated membrane, with
Obtain waterproof ventilated membrane.
According to another aspect of the present invention, the present invention provides a kind of waterproof ventilated membrane comprising: diaphragm has the
One surface and the second surface opposite with the first surface；Multiple first layer holes, the first layer hole from the diaphragm
One surface extends into the diaphragm；The second surface in multiple second layer holes, second layer hole from the diaphragm extends into
Enter in the diaphragm；Each second layer hole is opposite at least one first layer hole, and the first layer hole of second layer hole corresponding thereto
Mutually pass to the through-hole to be formed through the diaphragm.
According to another aspect of the present invention, the present invention provides a kind of loudspeaker comprising shell is located in the shell
Motor sub-assembly, and the vibration plate being connected on the inner sidewall of the shell is described above anti-in the vibration plate and the present invention
Water ventilated membrane is integrated on a film.
Compared with prior art, waterproof ventilated membrane is made by die casting method using mold in the present invention.In this way, in the present invention
Waterproof ventilated membrane can not only guarantee logical acoustic mass of ventilating, can also have enough film thicknesses, thereby may be ensured that waterproof
Ventilative film strength, to improve its anti-water depth.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without any creative labor, it can also be obtained according to these attached drawings other
Attached drawing.Wherein:
Fig. 1 is the part longitudinal profile schematic diagram after diaphragm is directly punched；
Fig. 2 is longitudinal profile schematic diagram of the diaphragm after the punching of anisotropy rot etching technique；
The structural schematic diagram of the mold of its manufacture waterproof ventilated membrane for the present invention in one embodiment of Fig. 3；
Fig. 4 is the longitudinal profile schematic diagram carried out after note film to the mold of manufacture waterproof ventilated membrane shown in Fig. 3；
Fig. 5 is the longitudinal profile schematic diagram of waterproof ventilated membrane obtained after demoulding to Fig. 4；
Fig. 6 is the structural schematic diagram of the mold of the manufacture waterproof ventilated membrane of the present invention in another embodiment；
Fig. 7 is the structural schematic diagram of the mold of the manufacture waterproof ventilated membrane of the present invention in a further embodiment；
Fig. 8 be Fig. 7 in mold releasability after obtain the structural schematic diagram of diaphragm；
Fig. 9 is the diaphragm pressure process schematic diagram in Fig. 8；
Figure 10 is the flow diagram using the die casting method of the mold in Fig. 7；
Figure 11 is the top view in two-sided dislocation hole of different shapes on waterproof ventilated membrane；
Figure 12 is that the single side of the mold of the double-deck cylinder of the present invention in another embodiment molds showing for waterproof ventilated membrane
It is intended to；
Figure 13 is the match plate pattern of the mold of the double-deck cylinder of the present invention in another embodiment and the mold of single layer cylinder
Cast the schematic diagram of waterproof ventilated membrane；
Figure 14 is the first manufacturing method of the mold of the cylinder double-deck in one embodiment of the invention；
Figure 15 is second of manufacturing method of the mold of the cylinder double-deck in one embodiment of the invention；
Figure 16 is the third manufacturing method of the mold of the cylinder double-deck in one embodiment of the invention；
Figure 17 is a kind of schematic diagram for increasing material shrinkage cavity technique；
Figure 18 is the schematic diagram that liquid material shrinkage cavity technique is blown in pressurization；
Figure 19 is the process schematic that disposable tool is processed using photoetching process.
[specific embodiment]
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
" one embodiment " or " embodiment " referred to herein, which refers to, may be included at least one implementation of the invention
A particular feature, structure, or characteristic." in one embodiment " that different places occur in the present specification not refers both to same
A embodiment, nor the individual or selective embodiment mutually exclusive with other embodiments.Unless stated otherwise, herein
In connection, be connected, connect expression be electrically connected word indicate directly or indirectly to be electrical connected.
The shape in " hole " of middle finger of the present invention can be various cross sectional shapes, for example round, rectangular, rectangle etc., aperture are
The maximum width or minimum widith in the section of finger-hole, and it is not necessarily the diameter of round hole, for example the section in hole is square, that
The aperture in the hole can be the length for criticizing rectangular catercorner length or a line, and one word of diameter in the diameter in hole is not yet
Mean the section in hole must be it is round, diameter at this time is a generalized concept, can with the maximum width in the section of finger-hole or
Minimum widith, such as the diameter of slot can refer to the diagonal line of slot or the length of short side.
In waterproof ventilated membrane, the effective via area of unit area is referred to: each through-hole is straight on film (or diaphragm)
Diameter may change, and area is the effective via area in hole at the minimum diameter of each through-hole, on the film of unit area, Suo Youtong
The summation of the effective via area in the hole in hole is the effective via area of unit area (hereinafter referred to as effective area).Obviously, it to mention
On the one hand the high effective via area of unit area is that varying aperture as far as possible that hole is done is small, is on the one hand the close of hole to be improved
Degree.
The one of the waterproof ventilated membrane is big, and manufacture difficult point is exactly, on the one hand in order to improve the fire resistance characteristic of film, hole on film
Diametric requirements are small as far as possible, and on the other hand in order to guarantee film strength, film needs certain thickness.The depth of through-hole in this way on film
Spending can be relatively high with the ratio (referred to as aspect ratio) of diameter, so that the difficulty in processing can be brought.It can be wanted according to application
It asks to select manufacturing process.
First kind method is directly to punch (or single side punching) on ready diaphragm 110, to form many micron orders
Through-hole 120, as shown in Figure 1, its for diaphragm directly punched after part longitudinal profile schematic diagram.The technique of punching has machinery
Processing, electrical discharge machining, laser processing, 3D are (3Dimensions, three-dimensional) printing, chemical etching, ion etching, photoetching etc..
It is punched using the mode of machining and electric spark, in 10 microns, aperture is bigger for minimum-value aperture, the hydraulic pressure that film can be born
It is less high, punched if aspect ratio is relatively high it is difficult, and be machined, Kong Buke relatively high to the requirement of mechanical strength of film
What can be done is too close.Laser processing punching, due to the limitation of spot size, the minimum-value aperture that can generally do is also 10 microns,
Punched if aspect ratio is relatively high it is difficult, it is relatively good with ultrafast laser (nanosecond, picosecond, femtosecond laser) processing effect, still
The processing cost of a large amount of hole one by one is relatively high.Due to being increasing material manufacturing, the problem of high aspect ratio, is easier to solve for 3D printing
Certainly, but the precision minimum of existing 3D printing is also at 10 microns, this means that the deep hole ratio that make 10 microns or less apertures
It is more difficult.Using chemical etching method, make what the hole of small-bore was possible to, but the size in hole is related with the depth of through-hole
System, isotropic etch are difficult to make the through-hole of high aspect ratio, and varying aperture is also bigger.It is existing if anisotropic etch
Almost without the material at the nearly right angle of corrosion corner connection in material, it means that through-hole can only be the taper for having certain angle, Zhi Nengman
Sufficient effective area application of less demanding, as shown in Fig. 2, its longitudinal profile for diaphragm after the punching of anisotropy rot etching technique
Schematic diagram, wherein the cone angle of the through-hole 220 formed on diaphragm 210 is fixed.The size in the hole of ion etching and direct photoetching can be with
Control it is relatively good, but process also more difficult if aspect ratio is relatively high, and processing cost is relatively high, direct photoetching
If photoresist itself after photoetching be used as structural material performance not to be able to satisfy the demand of relatively high requirement, generally to combine subsequent
Reverse mould technique.
It is directly punched to overcome the shortcomings of above-mentioned on diaphragm, the present invention provides the second classes of manufacture waterproof ventilated membrane
Method.The second class method is to manufacture diaphragm with reverse mould technique, and the production of mold is crucial.
Single side die casting process
It please refers to shown in Fig. 3, the structure for the mold of the manufacture waterproof ventilated membrane of the present invention in one embodiment is shown
It is intended to.The mold of manufacture waterproof ventilated membrane shown in Fig. 3 includes substrate 310 and multiple cylinders 320, and the cylinder 320 is fixed on
It is spaced apart from each other on the first surface 312 of the substrate 310, and between the multiple cylinder 320 and densely arranged, the cylinder
320 sectional dimension (or width) is micron order, for example, the width in the section of the cylinder 320 can be less than or equal to 50 microns,
Preferably can be less than or equal to 20 microns, the depth-width ratio of the cylinder can be between 1-15, it is preferred that can 3-15 it
Between, such as 8 or 10.
The cylinder 320 can be cylindrical body, rectangular scapus, square column, triangular column etc..
The mold of manufacture waterproof ventilated membrane shown in Fig. 3 can be divided into can be with nonexpondable mold and disposable mould
Tool.Nonexpondable mold requires mould strength high, is generally made from a metal.Processing method can be machining, electric spark
Processing, laser processing, 3D printing, chemical etching and/or ion etching etc..In order to make the hole on reverse mould caudacoria (or diaphragm) have ratio
Higher aspect ratio, cylinder 320 need relatively high depth-width ratio, such as depth-width ratio can be between 1-15, it is preferred that can be with
Between 3-15, such as 8 or 10, such structure is more fragile, and the requirement to processing is relatively high.It can be according to the requirement of application
To select manufacturing process.
Below in conjunction with Fig. 4 and Fig. 5, the process molded using the mold of manufacture waterproof ventilated membrane shown in Fig. 3 is introduced.
Firstly, carrying out injection molding.Packing material 410 is injected into the mold of manufacture waterproof ventilated membrane shown in Fig. 3, so that
Packing material 410 fills the gap surrounded by substrate 310 and multiple cylinders 320, specific as shown in figure 4, Fig. 4 is to shown in Fig. 3
The mold of manufacture waterproof ventilated membrane carry out the longitudinal profile schematic diagram after note film.The casting method of the note film step can be
Casting, injection molding, electroforming etc.；The packing material 410 can be metal, and nonmetallic, organic matter or multi-layer are compound.
Then, it is demoulded.By the packing material 410 after casting from it is shown in Fig. 3 manufacture waterproof ventilated membrane mould
It is detached from tool, it is specific as shown in Figure 5 to obtain waterproof ventilated membrane.Fig. 5 is waterproof ventilated membrane obtained after demoulding to Fig. 4
Longitudinal profile schematic diagram, waterproof ventilated membrane shown in fig. 5 includes diaphragm 510 and multiple through-holes through the diaphragm 510
520, the first surface 512 of the through-hole 520 from the diaphragm 510 is through to the second surface 514 of the diaphragm 510, described
Multiple through-holes 520 are spaced apart from each other arrangement.Wherein, the aperture of through-hole 520 is micron order, and aspect ratio can be excellent between 1-15
Choosing, can between 3-15, such as 8 or 10, the aperture of the through-hole can be less than or equal to 50 microns, can preferably be less than
Equal to 20 microns.
As it can be seen that in this embodiment, the present invention manufactures waterproof ventilated membrane using single side die casting process, to overcome aforementioned hole depth
Diameter is than high bring processing difficulties.In this way, waterproof ventilated membrane produced by the present invention, the effective via area of unit area is relatively high
Guarantee logical acoustic mass of ventilating, film thickness guarantees film strength enough, to improve anti-water depth.
Mold in the present invention demoulds in use, since 320 structure of cylinder is more fragile (when especially depth-width ratio is relatively high)
Shi Rongyi is damaged.A kind of improved method is that cylinder is made into cone cell.Anisotropic etch processes the cone angle and material to be formed
It is related, it not can control.It is generally desirable to cone angle can design it is controllable.A kind of processing method is the angle processing die with design,
Cylinder processing is tapered, can be mold and changes fixed angle, is also possible to machining tool and changes machining angle.Under micro-dimension
Machining, electrical discharge machining, laser processing, ion etching can accomplish this point.
The structural schematic diagram of the mold of its manufacture waterproof ventilated membrane for the present invention in another embodiment of Fig. 6.Such as Fig. 6
Shown, the mold includes substrate 610 and multiple cylinders 620, and the cylinder 620 is fixed on the first surface of the substrate 610
On.The cylinder 620 is that root is thick, and the thin taper in end, taper herein can be sensu lato taper, including frustum, circle
Cone, side's cone etc..In this way, in demoulding, it is not easy to mold damage.
Two-sided die casting process
In addition to Fig. 3-single side shown in fig. 5 molds mode, waterproof ventilated membrane can also be manufactured using two-sided molding mode.
Fig. 7 is the structural schematic diagram of the mold of the manufacture waterproof ventilated membrane of the present invention in a further embodiment.Such as Fig. 7 institute
Show, the mold includes the first die unit 710 and the second die unit 720.Each die unit includes substrate 730 and multiple
Cylinder 740.The cylinder 740 is fixed on the first surface of the substrate 710, and between the multiple cylinder 740 each other
Every and it is densely arranged, the sectional dimension of the cylinder 740 is micron order.720 phase of first die unit 710 and the second die unit
To placement, the first surface of the substrate of the first die unit 710 faces and parallel to the substrate of second die unit 720
First surface, multiple columns of one or more of multiple cylinders 740 of the first die unit 710 and the second die unit 720
One or more of body 740 is oppositely arranged, the end of the opposite cylinder of the first die unit 710 and the second die unit 720
End is spaced apart from each other.
In one application, the cylinder of the depth-width ratio of the cylinder 740 of the first die unit 710 and the second die unit 720
740 depth-width ratio can be between 1-15, it is preferred that can between 3-15, such as 8 or 10, the section of the cylinder is wide
Degree can be less than or equal to 50 microns, can preferably be less than or equal to 20 microns.Due to being two-sided molding, each die unit 710
The depth-width ratio of cylinder 740 can be smaller, be more easily manufactured in this way, intensity is also stronger.Each die unit is discussed in detail
Can also be with reference to the mold of unilateral molding above, which is not described herein again.
Figure 10 is the flow diagram using the die casting method 900 of the mold in Fig. 7.Below with reference to described in Fig. 7-9 introduction
Die casting method 900, for Fig. 8 to obtain the structural schematic diagram of diaphragm after the mold releasability in Fig. 7, Fig. 9 is that the diaphragm in Fig. 8 pressurizeed
Journey schematic diagram.The die casting method 900 includes the following steps.
Step 910, as shown in Figure 7, the first die unit 710 and the second die unit 720 are placed in opposite directions, at this time the
The first surface of the substrate 730 of one die unit 710 faces and parallel to the of the substrate 730 of second die unit 720
Multiple cylinders 740 of one surface, multiple cylinders 740 of the first die unit 710 and the second die unit 720 are opposite respectively, to
Between first die unit 710 and the second die unit 720 inject packing material 805 so that packing material filling by
Gap between substrate.
Step 920, as shown in Figure 8, it is demoulded, by the packing material after casting from the waterproof ventilated membrane
It is detached from mold, to obtain diaphragm 810.The diaphragm 810 has first surface 811 and opposite with the first surface second
Surface 812.Multiple first layer holes 813 are extended to form in the first surface 811 of the diaphragm 810, the of the diaphragm 810
Two surfaces 812 have extended to form multiple second layer holes 814.Each second layer hole 814 is opposite at least one first layer hole 813.
Step 930, as shown in Figure 9, it is pressurizeed in 810 side of diaphragm so that the hole of 810 two sides of the diaphragm penetrates through,
To obtain waterproof ventilated membrane.At this point, 813 phase of first layer hole of second layer hole 814 corresponding thereto passes to be formed through described anti-
The through-hole of water ventilated membrane 810.The pressure can be air pressure, be also possible to other Fluid pressures.
As it can be seen that the waterproof ventilated membrane includes diaphragm 810, from the first surface of the diaphragm 810 extends into the film
Multiple first layer holes 813 in piece and extended into from the second surface of the diaphragm 810 in the diaphragm multiple second
Layer hole 814.
In figures 7-9, the first layer hole 813 of a second layer hole 814 corresponding thereto, which shifts to install and misplaces, communicates,
The area of section of the interface portion in second layer hole 814 and opposite first layer hole 813 is less than second layer hole 814 and first layer hole
813 area of section can reduce the effective aperture of through-hole in this way.In one application, the first layer hole and second layer hole
Aperture can be less than or equal to 50 microns, preferably can be less than or equal to 20 microns, their aspect ratio can 1-15 it
Between, it is preferred that can between 3-15, such as 8 or 10.Certainly, in other embodiments, by the way that corresponding first mold is arranged
Unit and the second die unit can make a second layer hole opposite with multiple first layer holes.
In the above-described embodiments, the end of the cylinder 740 of the first die unit 710 and the second die unit 720 be separated by and
Not in contact with, therefore the hole of the two sides of the waterproof ventilated membrane 810 and be not penetrated after demoulding, it is therefore desirable to carry out pressurization perforation.
In another improved embodiment, the cylinder 740 of the first die unit 710 and the second die unit 720 that can also design
Joining distal ends touching, the hole of two sides of the waterproof ventilated membrane 810 directly penetrates through after demoulding in this way, can save pressurization
The step of perforation.
As it can be seen that in this embodiment, the present invention manufactures waterproof ventilated membrane using two-sided die casting process, can further drop
Low difficulty of processing.Associated description in Fig. 3-Fig. 6 and its single side die casting process presented hereinabove, such as the system of die unit
Method is made, the casting method of film step, the material of the packing material are infused, shape of cylinder etc. can be incorporated in two-sided
In die casting process, for clarity, being just not repeated to describe here.
It please refers to shown in Figure 11, for using two-sided mistake of different shapes made from present invention die casting method shown in Fig. 10
The top view in position hole (or through-hole).As shown in Figure 11 (a), circle is formed in upper surface (it is properly termed as first surface) side of diaphragm
Shape upper layer hole (it is properly termed as first layer hole) forms round lower layer in lower surface (it is properly termed as second surface) side of diaphragm
Hole (it is properly termed as second layer hole), round upper layer hole and round lower layer hole dislocation communicate.As shown in Figure 11 (b), in diaphragm
Upper surface side forms square upper layer hole, forms square lower layer hole, square upper layer hole and square lower layer hole in the lower face side of diaphragm
Dislocation communicates.As shown in Figure 11 (c), square upper layer hole is formed in the upper surface side of diaphragm, forms circle in the lower face side of diaphragm
Shape lower layer hole, square upper layer hole and round lower layer hole dislocation communicate.As shown in Figure 11 (d), 4 are formed in the upper surface side of diaphragm
Square upper layer hole forms a corresponding round lower layer hole in the lower face side of diaphragm, 4 square upper layer holes with 1 circle
The dislocation of lower layer hole communicates.
The mold of multilayer cylinder
In the above-described embodiments, the cylinder in the mold is all single layer.
In another embodiment, the cylinder of the mold also can be made multilayered structure.Figure 12 is the present invention another
The schematic diagram of the single side molding waterproof ventilated membrane of the mold of the double-deck cylinder in a embodiment.Such as Figure 12, the mold includes base
Plate 1210 and multiple cylinders 1220 only schematically illustrate a cylinder in Figure 12, other cylinders do not show that.The column
Body 1220 is fixed on the first surface of the substrate 1210, is spaced apart from each other between the multiple cylinder 1220 and densely arranged,
The sectional dimension (or width) of the cylinder 1220 is micron order.Each cylinder 1220 includes the first table from the substrate 1210
The first trunk portion 1221 and the second column of one or more extended to form from the end of the first trunk portion 1221 that face extends to form
Body portion 1222, wherein the cross-sectional width of the first trunk portion 1221 is greater than the cross-sectional width of the second cylinder.First trunk portion and second
The depth-width ratio of trunk portion can be between 1-15, it is preferred that can between 3-15, such as 8 or 10, second trunk portion
The width in 1222 section can be less than or equal to 50 microns, can preferably be less than or equal to 20 microns.Second main part
1222 can be one, be also possible to multiple.
It can use the mold molding waterproof ventilated membrane 1205 shown in Figure 12 with the double-deck cylinder, die casting method can be with
With reference to the associated description that single side described above molds, it is not repeated herein.The waterproof ventilated membrane 1205 include diaphragm, from
Multiple first layer holes that the first surface of the diaphragm extends into the diaphragm are extended into from the second surface of the diaphragm
Enter multiple second layer holes in the diaphragm.Each first layer hole corresponds to first trunk portion 1221, each second layer hole pair
Second main part 1222 is answered, first layer hole each in this way can correspond to and be connected to multiple first layer holes, and second layer hole is cut
The width in face is less than the width in the section in the first layer hole.The aspect ratio in first layer hole and second layer hole can 1-15 it
Between, it is preferred that it can be between 3-15, the width in the section in the first layer hole can be less than or equal to 50 microns, preferably may be used
To be less than or equal to 20 microns.
Figure 13 is the match plate pattern of the mold of the double-deck cylinder of the present invention in another embodiment and the mold of single layer cylinder
Cast the schematic diagram of waterproof ventilated membrane.In another embodiment, as shown in fig. 13 that, the mould with the double-deck cylinder can also be utilized
Tool carries out two-sided molding with the mold of unification single layer cylinder as shown in Figure 3 to manufacture waterproof ventilated membrane 1305, wherein described
The mold of single layer cylinder includes substrate 1310 and multiple cylinders 1320, wherein the cylinder 1320 is single layer cylinder.At another
In embodiment, the mold of the single layer cylinder in Figure 13 can also be replaced using the mold of the double-deck cylinder.
For the mold of the double-deck cylinder, the comparison that is bigger, therefore can doing of the cross-sectional width of the first trunk portion 1221
The cross-sectional width of height, the second main part 1222 is smaller, can reduce the effective of the through-hole on waterproof ventilated membrane 1205 in this way
Aperture.Multiple second trunk portions 122 are set, the effective via area of unit area of waterproof ventilated membrane can be improved.
Figure 14 is the first manufacturing method of the mold of the double-deck cylinder described in one embodiment of the invention.Such as Figure 14 institute
Show, the manufacturing method includes the following steps.
First step can first prepare one block of substrate；
Second step, processes the first big trunk portion 1221 on a surface of the substrate, and processing method can be with
It is machining, electrical discharge machining, laser processing, 3D printing, chemical etching, ion etching, photoetching etc..
Third step processes the second small trunk portion 1222 on the end of the first big trunk portion.Each first cylinder
The second trunk portion 1222 in portion 1221 can be one, be also possible to multiple.The size of the second small trunk portion is finer,
The general processing method for being suitble to processing fine size, such as chemical etching, ion etching, photoetching etc..This method paxilla
The bad control of height, generally require strict control processing conditions and process time to realize, it is desirable that relatively high.
In this embodiment, the substrate 1210 of the mold, the first trunk portion 1221, the second trunk portion 1222 are all same
Kind material.
Figure 15 is second of manufacturing method of the mold of the double-deck cylinder described in one embodiment of the invention.Such as Figure 15 institute
Show, the manufacturing method includes the following steps.
First step, can first prepare double-deck substrate, i.e. substrate 1 and substrate 2, substrate 1 can also claim first base material or under
Layer substrate, substrate 2 can also claim the second substrate or upper layer substrate.Upper layer substrate can be through spraying, and coating rotates liquid substrate
The then cured method on lower layer's substrate, is also possible to be electroplated, electroforming, 3D printing, chemical deposition, vapor deposition etc. increases material
Mode is fixed on lower layer's substrate.The thickness of upper layer substrate can control more accurate and consistent.
Second step processes the first big trunk portion 1221 on the upper surface of the second substrate, and processing method can be
Machining, electrical discharge machining, laser processing, 3D printing, chemical etching, ion etching, photoetching etc..
Third step, processes the second small trunk portion 1222 on the end of the first big trunk portion 1221, and small second
The size of trunk portion is finer, the general processing method for being suitble to processing fine size, such as chemical etching, ion etching,
Photoetching etc..The second trunk portion 1222 in each first trunk portion 1221 can be one, be also possible to multiple.
As it can be seen that the first trunk portion 1221 is first base material formation, the second trunk portion 1222 is the formation of the second substrate, base
Plate 1210 is first base material formation.Since material is different above and below substrate, in chemical etching, when ion etching or photoetching, can be done
To different using material properties, in processing only process upper layer substrate and on lower layer's substrate without influence.
Figure 16 is the third manufacturing method of the mold of the double-deck cylinder described in one embodiment of the invention.Such as Figure 16 institute
Show, the manufacturing method includes the following steps.
First step can first prepare one block of substrate 1 (can also claim first base material or lower layer's substrate)；
Second step first processes the first big trunk portion 1221 on a surface of substrate 1, and processing method can be
Machining, electrical discharge machining, laser processing, 3D printing, chemical etching, ion etching, photoetching etc..
Third step is flat using liquid self-flowing or the side such as rotate with the first big trunk portion 1221 of liquid substrate submergence
Method controls liquid height, and solidification liquid base obtains substrate 2 (can also claim first base material, lower layer's substrate).
Four steps, processes the second trunk portion 1222 on the substrate 2 above the first trunk portion 1221, processing method,
Chemical etching, ion etching, photoetching etc..The second trunk portion 1222 in each first trunk portion 1221 can be one, can also
To be multiple.Substrate 2 only has upper layer sub-fraction to participate in Precision Machining in Figure 16, substrate 2 is divided can also again in practical operation
At two layers, upper layer is to participate in precision machined material, and lower layer can change other the cheaper materials for processing and easily removing into.
Further, in one embodiment, the waterproof ventilated membrane in the present invention further includes being formed with macropore (or open-work)
Support frame (not shown), the diaphragm for being formed with through-hole can be attached on support frame as described above, and the structure between macropore is as reinforcing
The anti-pressure ability of muscle reinforcement diaphragm.Wherein, support frame as described above is sheet metal or high-intensitive high molecular material.If in the present invention
The compression strength of waterproof ventilated membrane is sufficiently high, and waterproof performance can be more preferable, and can directly use if film-strength is high, does not need
Or the support requirement of metallic support (or support frame) is reduced, installation operation is also more convenient.
Further, since the present invention uses the novel waterproof air previous film of reverse mould technique manufacture than traditional waterproof and breathable
Film is more solid, durable, is hardly damaged, and can bear higher hydraulic pressure, and therefore, the waterproof ventilated membrane in the present invention can be used for microphone
In loudspeaker.Since loudspeaker sounding vibration plate is exactly a block film, such loudspeaker sounding vibration plate and waterproof ventilated membrane can collect
On Cheng Yi films, device cost is reduced.In one embodiment, Microspeaker include shell, be located at the shell it is intracorporal
Waterproof ventilated membrane collection in motor sub-assembly, and the vibration plate being connected on the inner sidewall of the shell, the vibration plate and the present invention
On Cheng Yi films.
Shrinkage cavity processing
After forming through-hole on diaphragm, shrinkage cavity processing can also be carried out using shrinkage cavity technique further to reduce effective hole
Diameter, to make up processing technology limitation, pore size is more difficult to do small defect.Aforesaid way or existing other modes can be used
Through-hole is formed on diaphragm.
Figure 17 illustrates a kind of increasing material shrinkage cavity technique.It can use and be such as electroplated, electroforming, chemical deposition, vapor deposition
Etc. modes, can the surface of diaphragm 1710 slowly accumulate increase material substance 1730, and have the tendency that close through-hole 1720, pass through control
System increases the speed of material substance accumulation and the time of accumulation can achieve the purpose that the size of through-hole is reduced on the surface of diaphragm.
Figure 18 is that liquid material shrinkage cavity process schematic representation is blown in pressurization.Such as Figure 18, spraying, coating on the surface of diaphragm 1810
Liquid or semi liquid state substrate 1830 are rotated, liquid tension has the tendency that closing through-hole 1820.It is with air pressure capable of being increased in the one side of diaphragm 1810
Or the pressurization of other fluids, this layer of liquid substrate 1830 will be blown open, suitable control Fluid pressure also can after solidifying liquid substrate
Obtain reducing the effect of the size of the through-hole.
Disposable tool
In such as Fig. 3, Fig. 6, Fig. 7, mold shown in Figure 12-Figure 16 is in use, more fragile (the especially depth-width ratio of column structure
When relatively high), when demoulding, is easy to be damaged.It is contemplated that using disposable mold, when demoulding, deliberately destroys column structure, makes
Column structure remains on diaphragm, removes column structure by other techniques later, obtains waterproof ventilated membrane.
Disposable mold substantially reduces the intensity requirement of mold materials, and mold can be metal, nonmetallic, organic matter
Or composite material.Processing method can be machining, electrical discharge machining, laser processing, 3D printing, chemical etching, ion
Etching, photoetching etc..The advantage and disadvantage of processing method are similar with nonexpondable mold, can select to manufacture according to the requirement of application
Technique.
For example, mold shown in figure 15 can be a disposable tool, and column structure 1221,1222 can be de-
It, later can be using the cylinder in other modes removal diaphragm intentionally with the substrate 1210 of diaphragm removing mold when mould.
Since mold is disposable, processing cost is greatly improved.Photoetching is the requirement that comparison is suitble to most of applications
Manufacturing process.
Figure 19 is the process schematic that disposable tool is processed using photoetching process.
Firstly, coating photoresist on substrate；
Secondly, being exposed photoetching to the photoresist using mask plate；After illumination, material properties changes, can be with
It is distinguished with other materials；
Finally, making the photoresist form the cylinder of the mold by developing technique, the substrate is exactly mold
Substrate.
The size in lithography process, cylinder and gap can control smaller.The cylinder of high depth-width ratio and high aspect ratio
Gap processing is difficult.Processing cost is relatively low, suitable for mass production.
Mold as shown in figure 19 is when manufacturing waterproof ventilated membrane, since all or part of cylinder remains in film after film demoulding
In the through-hole of piece.Residual cylinder can be removed by the difference using diaphragm and cylindrical material property.The method of removal includes
Corrosion, temperature control liquefaction or vaporization, with other gases or liquid reactions at gas or liquid under the conditions of certain temperature and pressure, by it
His liquid or gas dissolution etc..
Similar with nonexpondable mold, disposable mold also can be made taper, be conducive to cylinder to do high (such as
Fig. 6), and using the method for two-sided mold and dislocation mold it obtains, thicker intensity is more preferable, the bigger via membrane of effective area.
Single side molding+drilling technology
In another embodiment, single side can also be carried out using the mold as shown in Fig. 3-Fig. 6 and Figure 12 and molds work
Skill obtains diaphragm with hole on a surface, unlike embodiment shown in Fig. 3-Fig. 6 and Figure 12, in the present embodiment
In, the hole on the diaphragm is simply positioned on a surface of the diaphragm, and does not run through the diaphragm, can be by this some holes
Referred to as first layer hole.Later, it can use drilling technology to punch on another surface of the diaphragm and form second layer hole,
And first layer hole is made to be formed through through-hole with corresponding second layer hole.Wherein each second layer hole can correspond to one or more
First layer hole.The technique of punching can have machining, and electrical discharge machining, laser processing, 3D is (3Dimensions, three-dimensional)
Printing, chemical etching, ion etching, photoetching etc..
Single side molds the first layer hole to be formed and the shape and arrangement in punching formation and second layer hole can be as shown in figure 11,
It is not repeated herein.
It should be pointed out that any change that one skilled in the art does a specific embodiment of the invention
All without departing from the range of claims of the present invention.Correspondingly, the scope of the claims of the invention is also not merely limited to
In previous embodiment.
Claims (15)
1. a kind of mold of waterproof ventilated membrane, characterized in that it comprises:
First die unit and the second die unit,
Each die unit includes substrate and multiple cylinders, and the cylinder is fixed on the first surface of the substrate, and described
It is spaced apart from each other between multiple cylinders,
The first surface of the substrate of first die unit faces and parallel to the first surface of the substrate of second die unit,
One or more of multiple cylinders of first die unit and one or more phases in multiple cylinders of the second die unit
To setting, the end of the opposite cylinder of the first die unit and the second die unit is spaced apart from each other or contacts.
2. the mold of waterproof ventilated membrane according to claim 1, which is characterized in that
The depth-width ratio of the cylinder of first die unit between 1-15, the depth-width ratio of the cylinder of the second die unit 1-15 it
Between, the cross-sectional width of the cylinder is less than or equal to 50 microns.
3. the mold of waterproof ventilated membrane according to claim 1, which is characterized in that
The processing method of the mold is machining, electrical discharge machining, laser processing, 3D printing, chemical etching, ion etching
Or/and photoetching,
The mold is metal, nonmetallic, organic matter or composite material.
4. the mold of waterproof ventilated membrane according to claim 1, which is characterized in that the first die unit and the second mold list
The cylinder of member is the taper that root is thick, end is thin.
5. a kind of manufacturing method using the mold manufacture waterproof ventilated membrane as described in claim 1-4 is any, which is characterized in that
The manufacturing method includes:
First die unit and the second die unit are placed in opposite directions, at this time the first surface of the substrate of the first die unit towards
And it is parallel to the first surface of the substrate of second die unit, one or more of multiple cylinders of the first die unit
It is oppositely arranged with one or more of multiple cylinders of the second die unit, the first die unit of Xiang Suoshu and the second mold list
Packing material is injected between member, so that packing material is filled between the first die unit and the substrate of the second die unit；
It is demoulded, the packing material after casting is detached from from the mold of the waterproof ventilated membrane, it is saturating to obtain waterproof
Air film.
6. manufacturing method according to claim 5, which is characterized in that
The method to injection packing material between first die unit and the second die unit is casting, injection molding
Or electroforming,
The packing material is metal, nonmetallic, organic matter or is combined by multi-layer.
7. manufacturing method according to claim 5, which is characterized in that its further include:
Liquid material technique is blown using increasing material technique or pressurization, shrinkage cavity processing is carried out to the obtained waterproof ventilated membrane.
8. manufacturing method according to claim 5, which is characterized in that after demoulding, the hole for obtaining the two sides of diaphragm is not passed through also
It is logical, the manufacturing method further include:
It pressurizes in the side that demoulding obtains diaphragm so that the hole of diaphragm two sides penetrates through, to obtain waterproof ventilated membrane.
9. manufacturing method according to claim 5, which is characterized in that
In demoulding, all or part of cylinder and the substrate of the first die unit and the second die unit are detached from and stay in into
Packing material after type, to obtain diaphragm；
Remaining cylinder in the diaphragm is removed, to obtain waterproof ventilated membrane.
10. manufacturing method according to claim 9, which is characterized in that
The method for removing remaining cylinder in the diaphragm includes corrosion, temperature control liquefaction or vaporization.
11. a kind of waterproof ventilated membrane, characterized in that it comprises:
Diaphragm, with first surface and the second surface opposite with the first surface；
The first surface in multiple first layer holes, first layer hole from the diaphragm extends into the diaphragm；
The second surface in multiple second layer holes, second layer hole from the diaphragm extends into the diaphragm；
Each second layer hole is opposite at least one first layer hole, and the first layer hole of second layer hole corresponding thereto mutually passes to be formed
Through the through-hole of the diaphragm.
12. waterproof ventilated membrane according to claim 11, which is characterized in that the material of the diaphragm be metal, it is nonmetallic,
Organic matter is combined by multi-layer, and first layer hole and second layer hole are film casts into first layer hole and second layer hole
Junction be plus Fluid pressure formed.
13. waterproof ventilated membrane according to claim 11, which is characterized in that
The first layer hole of the second layer hole corresponding thereto, which shifts to install and misplaces, to be communicated,
The aperture in first layer hole and second layer hole is respectively less than 50 microns, the aspect ratio in first layer hole and second layer hole 1-15 it
Between.
14. waterproof ventilated membrane according to claim 11, which is characterized in that
One second layer hole is opposite with multiple first layer holes；Or
One second layer hole is opposite with a first layer hole, and the first layer hole of second layer hole corresponding thereto shifts to install, the second layer
The area of section of the interface portion in hole and opposite first layer hole is less than the area of section in second layer hole and first layer hole.
15. a kind of loudspeaker comprising shell is located at the intracorporal motor sub-assembly of the shell, and is connected to the interior of the shell
Vibration plate on side wall, which is characterized in that
The vibration plate and the waterproof ventilated membrane as described in claim 11-14 is any are integrated on a film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434893.3A CN110248290A (en) | 2019-05-23 | 2019-05-23 | Waterproof ventilated membrane and its mold and manufacturing method and loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434893.3A CN110248290A (en) | 2019-05-23 | 2019-05-23 | Waterproof ventilated membrane and its mold and manufacturing method and loudspeaker |
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| WO2012164799A1 (en) * | 2011-06-01 | 2012-12-06 | 日東電工株式会社 | Water-resistant sound transmitting member, production method therefor, and water-resistant sound transmitting member carrier |
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| CN105765992A (en) * | 2013-11-18 | 2016-07-13 | 日东电工株式会社 | Waterproof sound-transmitting film and waterproof sound-transmitting structure using same |
| CN107075161A (en) * | 2014-09-24 | 2017-08-18 | 日东电工株式会社 | Adsorption method, the manufacture method of ceramic capacitor, optical film, optical component and the composition of the operation object of polymer film, waterproof sound passing membrane, water-proof sound-transmitting component, electronic equipment, housing for electronic equipment, water-proof sound-transmitting structure, waterproof ventilated membrane, waterproof and breathable component, waterproof and breathable structure, absorption with piece, on absorbing unit |
| CN210093493U (en) * | 2019-05-23 | 2020-02-18 | 深圳市伊声声学科技有限公司 | Waterproof ventilated membrane, mold thereof and loudspeaker |
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2019
- 2019-05-23 CN CN201910434893.3A patent/CN110248290A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012164799A1 (en) * | 2011-06-01 | 2012-12-06 | 日東電工株式会社 | Water-resistant sound transmitting member, production method therefor, and water-resistant sound transmitting member carrier |
| CN105706459A (en) * | 2013-11-07 | 2016-06-22 | 日东电工株式会社 | Waterproof sound-transmitting film and electronic apparatus |
| CN105765992A (en) * | 2013-11-18 | 2016-07-13 | 日东电工株式会社 | Waterproof sound-transmitting film and waterproof sound-transmitting structure using same |
| CN107075161A (en) * | 2014-09-24 | 2017-08-18 | 日东电工株式会社 | Adsorption method, the manufacture method of ceramic capacitor, optical film, optical component and the composition of the operation object of polymer film, waterproof sound passing membrane, water-proof sound-transmitting component, electronic equipment, housing for electronic equipment, water-proof sound-transmitting structure, waterproof ventilated membrane, waterproof and breathable component, waterproof and breathable structure, absorption with piece, on absorbing unit |
| CN210093493U (en) * | 2019-05-23 | 2020-02-18 | 深圳市伊声声学科技有限公司 | Waterproof ventilated membrane, mold thereof and loudspeaker |
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