CN101091413A - Diaphragm for speaker, method for producing the same, speaker using such diaphragm and apparatus using such speaker - Google Patents
Diaphragm for speaker, method for producing the same, speaker using such diaphragm and apparatus using such speaker Download PDFInfo
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- CN101091413A CN101091413A CNA2006800016253A CN200680001625A CN101091413A CN 101091413 A CN101091413 A CN 101091413A CN A2006800016253 A CNA2006800016253 A CN A2006800016253A CN 200680001625 A CN200680001625 A CN 200680001625A CN 101091413 A CN101091413 A CN 101091413A
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- diaphragm
- loudspeaker
- resin
- aromatic polyamide
- polyamide fibre
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Disclosed is a diaphragm for speakers containing a resin, an aramid fiber, and an organosilicon compound for binding the resin and the aramid fiber. By having such a constitution, the diaphragm can maintain high elastic modulus and high internal loss which are characteristic to the aramid fibers. Consequently, the diaphragm is increased in the degree of freedom in physical value setting while securing moisture resistance reliability and strength. Such a diaphragm is also excellent in appearance.
Description
Technical field
The present invention relates to be used in diaphragm for loudspeaker and manufacture method thereof in various stereo sets or the vision facilities, use the loud speaker of this vibrating membrane.In addition, also relate to equipment such as the stereophone receiver that uses this loud speaker or television receiver, automobile.
Background technology
Fig. 6 is the profile of the existing resinous diaphragm for loudspeaker that utilizes injection moulding and form.The resin of vibrating membrane 16 use polypropylene etc., heat fusing resin slicer in preestablishing the mould of shape, thus utilize injection moulding to make.As the resin material that is used in injection moulding, use the homogenous material of polypropylene etc. usually.In addition, with as the adjustment of the physical parameter of vibrating membrane 16 promptly as the purpose that is adjusted into of the characteristic of loud speaker or tonequality, the vibrating membrane 16 of the mixed type of using diverse resin and forming is also arranged.
And then, for the physical parameter of only adjusting difficulty, the reinforcing material of mica etc. is sneaked in resin material and adjust, thereby adjust characteristic or tonequality as loud speaker with resin material.For example, open in the flat 2-228197 communique the spy and disclose such vibrating membrane.
Recently, the performance of leap that is accompanied by the electronic equipment of stereo set or vision facilities etc. improves, and the performance that market also requires to be used in the loud speaker in these electronic equipments consumingly improves.Therefore in order to improve the performance of loud speaker, the high performance that occupies the vibrating membrane of the bigger proportion that determines tonequality is absolutely necessary.
But existing vibrating membrane utilization is made by the injection moulding of the method for making of copying paper and forming or resin or by the method for making that punching press forms.Promptly, paper vibrating membrane or resin vibrating membrane be main flow, while the speciality of bringing into play is separately separately used corresponding to its purposes.
Sneak into aromatic polyamide fibre or mica etc. because in the paper vibrating membrane, utilizing wet type to mix easily to copy, thus can set physical parameter meticulously, thus there is the degree of freedom of the adjustment of characteristic as loud speaker, tonequality to become big this advantage.But such vibrating membrane has the distinctive shortcomings of paper such as moisture-proof, water-fast poor reliability, again the operation that must exist very many what is called to copy paper in it is produced.
On the other hand, utilize injection moulding and the resin vibrating membrane that obtains, its moisture-proof, water-fast reliability or dimensional stability are good, thereby productivity is also high.But, for the physical property adjustment, even the inanimate matter filler of use mica etc. can not be guaranteed unified physical parameter.Thereby, very narrow and small as the adjusting range of the characteristic of loud speaker, tonequality.
Summary of the invention
The degree of freedom of adjustment that the invention provides a specific character, tonequality is big, can guarantee moisture-proof, water-fast reliability or dimensional stability, outward appearance might as well, the loud speaker that productivity also can improve.Diaphragm for loudspeaker of the present invention includes the organo-silicon compound of resin, aromatic polyamide fibre, binding resin and aromatic polyamide fibre.Utilize this structure to keep the high elastic modulus as the speciality of aromatic polyamide fibre, high internal loss, the degree of freedom of setting with the physical parameter of this vibrating membrane becomes big, can guarantee moisture-proof reliability or intensity, thereby can obtain the good vibrating membrane of outward appearance.
Description of drawings
Figure 1A is the profile of vibrating membrane of the loud speaker of embodiments of the present invention;
Figure 1B is the notion amplification profile of the vibrating membrane shown in Figure 1A;
Fig. 2 is the vertical view of the vibrating membrane shown in Figure 1A;
Fig. 3 is the profile of the loud speaker of embodiments of the present invention;
Fig. 4 is the outside drawing of the small-sized component stereo system system of embodiments of the present invention;
Fig. 5 is the profile of the automobile of embodiments of the present invention;
Fig. 6 is the profile of existing diaphragm for loudspeaker.
Symbol description
1 vibrating membrane
The 1A resin
The 1B aromatic polyamide fibre
The 1C organo-silicon compound
2 magnet
3 upper boards
4 yokes
5 magnetic circuits
6 magnetic gaps
7 frameworks
8 voice coil loudspeaker voice coils
9 edges
10 loud speakers
11 shells
12 amplifiers
13 operating portions
14 small-sized component stereo system systems
15 automobiles
16 vibrating membranes
21 speaker systems
51 after-poppets
52 front panels
53 drive divisions
54 steering wheels
55 car bodies
56 front-wheels
57 trailing wheels
58 seats
Embodiment
Figure 1A is to use the profile of the vibrating membrane in the loud speaker of embodiments of the present invention, and Figure 1B is with the notion amplification profile.Fig. 2 is same vertical view.Vibrating membrane 1 is sneaked into aromatic polyamide fibre 1B in resin 1A, thereby and then injection moulding utilize organo-silicon compound 1C to come binding resin 1A and aromatic polyamide fibre 1B securely and the material that obtains constitutes.That is, vibrating membrane 1 includes the organo-silicon compound 1C of resin 1A, aromatic polyamide fibre 1B and binding resin 1A and aromatic polyamide fibre 1B.
By sneaking into organo-silicon compound 1C, it is big that the adhesion of resin 1A and aromatic polyamide fibre 1B just becomes, thereby both close property improve.Reduce with the energy loss in this vibrating membrane 1, more effectively apply flexibly the characteristic of aromatic polyamide fibre 1B, and can access the vibrating membrane of high-strength high-elasticity modulus.Particularly, because if resin 1A and aromatic polyamide fibre 1B utilize organo-silicon compound 1C and compoundization, then both close property further improve, so be preferred.
Preferably in resin 1A, use crystallinity or noncrystalline olefin resin.Formability becomes good by using olefin resin.In addition, by separately using crystalline resin material and noncrystalline resin material, just can satisfy physical parameter as the optimum of resin material according to purposes.
Can utilize so-called amino silane as organo-silicon compound 1C is that couplant (couplingagent) or carbon number are the water-disintegrable long chain alkyl silane more than 6 etc.Wherein preferred the use has amino organo-silicon compound.By sneaking into such organo-silicon compound 1C, resin 1A and aromatic polyamide fibre 1B just bond more securely.With this, the physical property of aromatic polyamide fibre 1B is just brought into play function effectively, thereby can access the higher vibrating membrane of modulus of elasticity 1.In addition, as having amino organo-silicon compound 1C as used herein, 3-aminopropyltriethoxywerene werene, N-2 (aminoethane base) 3-aminopropyltriethoxywerene werene or 3-TSL 8330 are more effective.Can use hexyl trimethoxy silane or decyl trimethoxy silane as water-disintegrable long chain alkyl silane again.
Below, the concrete example that uses polyacrylic situation in resin 1A is described.At first, aromatic polyamide fibre (aramid fiber) 10wt% of mixing polypropylene 90wt% of granulation and fibre length 3mm.In mixing thing 100 weight portions, sneak into the 3-aminopropyltriethoxywerene werene of 1.5 weight portions this moment as organo-silicon compound 1C.Wherein, organo-silicon compound 1C also can add before resin 1A and aromatic polyamide fibre 1B mixing, also can add in mixing.
At this moment, because utilize the heating granulation, as polypropylene and compoundization of aromatic polyamide fibre 1B of resin 1A, thereby the intimate degree of resin 1A and aromatic polyamide fibre 1B is improved, both evenly disperse mutually, so be preferred.
Mixing thing with such modulation is made section, and injection moulding is carried out in this section, thus shaping vibrating membrane 1.Make the vibrating membrane 1 of sample F like this.And after the proportion of measuring vibrating membrane 1, extracting its part out is the test portion of 32mm * 5mm size, measures modulus of elasticity, internal loss.Similarly be determined at existing paper or resin, sneaked into the reinforcing material of 10wt% in them and the vibrating membrane that obtains (characteristic of sample A～E) is put its result in order shown in (table 1).In addition, internal loss is 1 index that represents the properties of materials that is used in vibrating membrane, is presented in from the outside to give under the situation of kinetic energy of vibration etc., and this dissipation of energy is to outside ability.The high more unwanted lingering sound of internal loss is just few more, thereby can access the good loud speaker of tonequality.
Table 1
| Sample | Main material | Reinforcing material | Proportion | Modulus of elasticity | Internal loss |
| A | Paper | (nothing) | 0.6-0.8 | 1990 | 0.048 |
| B | Paper | Kepler | 0.6-0.8 | 2400 | 0.043 |
| C | Paper | Mica | 0.6-0.8 | 2410 | 0.046 |
| D | Polypropylene | (nothing) | 0.91 | 1660 | 0.05 |
| E | Polypropylene | Mica | 1.1 | 2700 | 0.045 |
| F | Aromatic polyamide fibre+polypropylene | (nothing) | 0.94 | 2700 | 0.07 |
Shown in (table 1) was clear and definite, the proportion of the material of the vibrating membrane 1 of the sample F of present embodiment was than using to the sample E of reinforcing material mica little.Again, and or relatively, have high elastic modulus, high internal loss as sample D, the E of resin vibrating membrane as the sample A～C of existing paper vibrating membrane, thus very effective on physical property.
In addition, polypropylene obtains usually easily, and injection moulding is also easy, but the present invention is not limited thereto.Can use other separately uses freely such as resin corresponding to the characteristic value of regulation.For example, under the situation of essential high-fire resistance or high solvent resistance, also can use the engineering plastics consistent with its purposes.
In addition, used the vibrating membrane 1 of aromatic polyamide fibre 1B to regenerate and had the bright and clear tone color of clear sense, thereby can suppress the distinctive low and deep unified tone color of resin.
And then, the enhancing of vibrating membrane 1 or to sound additional what stress or to make the sound press frequency characteristic have peak value and carry out also can sneaking into reinforcing material under the situation that tonequality adjusts.As such reinforcing material, can use mica, graphite, talcum and then cellulose fibre.If in reinforcing material, sneak into mica, then can improve modulus of elasticity.If sneak into graphite, then can improve modulus of elasticity and internal loss.As sneak into talcum, then can improve internal loss.By sneaking into cellulose fibre, just can under not reducing the prerequisite of polymeric elastic modulus, cellulose fibre and aromatic polyamide fibre not improve internal loss.Also can use the such tough fiber of carbon fiber as fiber again.Sneaking under the situation of carbon fiber, rigidity increases, and modulus of elasticity improves.In addition, by making up these materials respectively, just can be freely and adjust the physical parameter of vibrating membrane 1 accurately, thus can realize characteristic and the tonequality stipulated.
Again, also can sneak into mobile material modified.Material modifiedly can utilize for example mobile paraffin or calcium stearate as such.Particularly, because if use and to have amino aliphatic acid, the vibrating membrane 1 of the thin-walled light weight that then can utilize injection moulding to obtain aromatic polyamide fibre 1B highly-filled to form is so be preferred.Can use stearmide or oleamide as such aliphatic acid with amino.
(table 2) represented relatively and the situation of having sneaked into stearmide material modified as flowability with the flowability (MI) of the situation of not sneaking into the result.Estimate according to JIS K7210.
Table 2
| MI (g/10 branch) | |
| |
11 |
| |
15 |
As can be known clear and definite from (table 2), and do not sneak into mobile material modified comparing, if sneak into then mobile the raising.Therefore, even highly-filled aromatic polyamide fibre 1B also can utilize injection moulding to obtain the big vibrating membrane 1 of the degree of freedom of shape.Under the identical situation of the loading of aromatic polyamide fibre 1B, obtain the more vibrating membrane 1 of thin-walled if sneak into the mobile material modified injection moulding that then can utilize again.
The characteristic that should stipulate and the realization of tonequality must but utilize method as follows to implement about the deep practical intelligence of structural property, structure sound usually.That is, characteristic, structure sound about the structure loud speaker by changing the parameter of its structure member, just can carry out change to a certain degree, thereby can be near the characteristic and the tonequality of regulation.
For example, in the structure member of loud speaker, suppose that the parameter of will remove other parts outside the vibrating membrane 1 is fixed as certain situation.The parameter that may change in vibrating membrane 1 except its physical parameter, is area or shape, weight, thickness etc.But the area of vibrating membrane 1 or shape, weight, the thickness starting stage on loudspeaker design is nearly all definite.That is, utilize condition beyond the physical parameter of vibrating membrane 1 roughly to determine the sound press frequency characteristic and the tonequality of loud speaker.
Under this situation, on this sound press frequency characteristic of being everlasting, produce unwanted peak value or inclination angle, also produce distortion significantly at specific frequency band.With regard to tonequality, become by the tone color of this sound press frequency characteristic about significantly again.These reasons are owing to the area of vibrating membrane 1 or shape, weight, thickness, especially sometimes by the vibration mode decision of vibrating membrane 1.In order to improve so unwanted peak value or inclination angle, distortion, obtain good sound quality, and select to be undertaken by following order under the situation of diaphragm material.
At first, sneak into material as resin 1A, aromatic polyamide fibre 1B and then other and the selected material that is believed to satisfy the desired sound press frequency characteristic of this loud speaker or tonequality, reliability step.Under this situation,, particularly be poured into reliability such as its thermal endurance class and select, again the material of the intrinsic tone color of the selected resin 1A separately tone color that approaches to stipulate about becoming the resin 1A of section.
Then, corresponding to unwanted peak value or the inclination angle on the sound press frequency characteristic that will eliminate, selected each material.Under the situation at reply inclination angle, be selected in the resin material that this frequency has resonance, under the situation of reply peak value, be selected in the material that this frequency has internal loss on the contrary.With regard to this material is selected, while the resonance frequency when considering to be configured as corresponding to resin 1A, aromatic polyamide fibre 1B, other sneaking into material the shape of the distinctive density of this material, modulus of elasticity, internal loss, tone color, vibrating membrane 1 etc. are selected.
Then, mixing selected material, for injection moulding with and the masterbatch section of having made aromatic polyamide fibre 1B highly-filled.Then, this masterbatch section of fusion utilizes injection moulding to obtain vibrating membrane 1.
The physical parameter of the vibrating membrane 1 that metering obtains like this, and estimate.Again, use vibrating membrane 1 to manufacture experimently loud speaker, meter characteristic, tonequality practically, thereby and then audition finally estimate.Under the situation of characteristic of utilizing evaluation but can not obtaining stipulating and tonequality, repeated multiple times is carried out this trial-manufacturing process.And therein, improved with their ratio that cooperates, thereby successively near characteristic and tonequality as target to material is selected.
Utilize and carry out above such process repeatedly, just can satisfy the characteristic and the tonequality of regulation, perhaps can process very approaching vibrating membrane 1.
The length of aromatic polyamide fibre 1B is preferably below the above 6mm of 0.3mm.By using the aromatic polyamide fibre 1B of this length range, the effect during with regard to the heating granulation of performance utilization efficiently and with compoundization of resin 1A, and productivity and quality raising.In addition, the fibre length of aromatic polyamide fibre 1B needn't be adjusted samely.For example also can conjugate fiber length 0.3mm the short fiber and long fibre below the above 6mm of fibre length 1mm of above not enough 1mm.Aromatic polyamide fibre 1B by using such combination long fibre and short fiber to obtain just can relax resonance, thereby can adjust careful tonequality.
The fibre length of aromatic polyamide fibre 1B than the short situation of 0.3mm under, become and can not bring into play the effect of aromatic polyamide fibre 1B efficiently, thereby can not expect high elastic modulus.On the other hand, under the situation longer, disperse the bad secondary aggegation that produces because of polymerization to become and be easy to generate from each aromatic polyamide fibre 1B than 6mm.Therefore, become essential long-time with the mixing of resin 1A.The agglutination body that perhaps manifests aromatic polyamide fibre 1B, thereby the outward appearance of diminishing on the surface of vibrating membrane 1.Productivity and quality reduce like this.
In addition, preferably with compoundization of aromatic polyamide fibre below the 3mm.If fibre length 3mm is long, then become difficult than unfertile land shaping vibrating membrane 1.
And then optimization aromatic Fypro 1B is more than 5% below 50% to the ratio of sneaking into of resin 1A.By making to become this cooperation ratio ranges, the effect when just performance and resin 1A are mixing efficiently, and productivity and quality raising.
Under the situation of sneaking into ratio less than 5% of aromatic polyamide fibre 1B, almost can not represent the effect of aromatic polyamide fibre 1B.On the other hand, under than more than 50% situation, become essential long-time with the mixing of resin 1A.Because injection moulding becomes difficult, so productivity and dimensional stability reduce, the degree of freedom of shape diminishes again.
Thereby by carrying out injection moulding and constitute vibrating membrane 1 sneaking into material that resin 1A and aromatic polyamide fibre 1B obtain like this, it is big that the degree of freedom that the physical parameter of vibrating membrane 1 is set just becomes.That is, can access the high elastic modulus that has as the speciality of aromatic polyamide fibre 1B, high internal loss, and moisture-proof reliability or the good vibrating membrane 1 of outward appearance.By make such vibrating membrane 1 with injection moulding, it is good that productivity and dimensional stability also become.
Usually resin 1A is very difficult with the fusion of aromatic polyamide fibre 1B, is that to utilize the drop stamping vibrating membrane that is shaped after tabular be common method at lamination.But,, just can guarantee the slimming or the durability of vibrating membrane 1 by boning the two with organo-silicon compound 1C.And can utilize the injection moulding vibrating membrane 1 that is shaped, thereby productivity improves.
In the present embodiment, use injection moulding, but be not limited thereto again.The plate that the material use solution casting mold method that for example also can use PP resin or aromatic polyamide fibre etc. is made from punching press up and down with mould, thereby shaping vibrating membrane 1.But under the thin situation of vibrating membrane 1, use injection moulding and be difficult to produce distortion, so be preferred.And as mentioned above by using organo-silicon compound 1C, be below the above 0.5mm of 0.2mm even injection moulding also can make thickness, more preferably be below the above 0.3mm of 0.2mm.By accessing slim vibrating membrane 1, just can provide the sound press characteristic good loud speaker like this.
Then, the loud speaker 10 that has used vibrating membrane 1 is described.Fig. 3 is the profile of the loud speaker of present embodiment.In loud speaker 10, upper board 3 clips by the magnet 2 of excitation with yoke 4, thereby constitutes the magnetic circuit 5 of internal magnetic type.Framework 7 is incorporated into the yoke 4 of magnetic circuit 5.The periphery of vibrating membrane 1 utilize edge 9 and in conjunction with (bonding) in the circumference of framework 7.Again, be combined with an end of voice coil loudspeaker voice coil 8, and an opposite end of voice coil loudspeaker voice coil 8 is incorporated in the magnetic gap 6 of magnetic circuit 5 in the mode that embeds at the central part of vibrating membrane 1.That is, voice coil loudspeaker voice coil 8 is incorporated into vibrating membrane 1, and is disposed in the sphere of action of the magnetic flux that produces from magnetic circuit 5.
Utilize this structure, it is big that the degree of freedom of the adjustment of characteristic, tonequality just becomes, thereby can access the loud speaker 10 that has as the high elastic modulus of the speciality of aromatic polyamide fibre 1B, high internal loss.In loud speaker 10, can guarantee moisture-proof reliability or intensity, thereby outward appearance is good, productivity is also high.
In the above description, the magnetic circuit 5 with internal magnetic type has been described, but has been not limited thereto, also can be applied to have in the loud speaker of magnetic circuit of external magnetic type.
The example of the equipment of the loud speaker 10 that has used such formation then, is described.Fig. 4 be present embodiment as the audio frequency of electronic equipment outside drawing with small-sized component stereo system system.
Thereby loud speaker 10 is assembled in and constitutes speaker system 21 in the shell 11.Amplifier 12 includes the amplifying circuit that is input into the signal of telecommunication in the speaker system 21.Operating portion 13 outputs of phonograph etc. are input into the signal source in the amplifier 12.Have amplifier 12, operating portion 13 and speaker system 21 as the audio frequency of electronic equipment like this with small-sized component stereo system system 14.Amplifier 12, operating portion 13, shell 11 are main parts of small-sized component stereo system system 14.It is the main part that loud speaker 10 is installed on small-sized component stereo system system 14.Again, the voice coil loudspeaker voice coil 8 of loud speaker 10 is from amplifier 12 power supplies of main part, from vibrating membrane 1 pronunciation.Utilize this structure just can access to carry out the small-sized component stereo system system 14 of the high structural property of the precision that all the time can not realize, structure sound, design.
In addition as the application of 10 pairs of equipment of loud speaker, audio frequency has been described with small-sized component stereo system system 14, but has been not limited thereto.Also can carry out portable portable with the application of audio frequency apparatus or its charging with system etc.And then, can use widely, spread in the electronic equipment of information communication device, computer association equipment etc. of vision facilities that LCD TV or plasma show TV etc., mobile phone etc.
The example of the another equipment of having used loud speaker 10 then, is described.Fig. 5 is the profile as the automobile 15 of equipment (device) of embodiments of the present invention.
Utilize this structure, high structural property, structure sound, the design of the precision of speciality of aromatic polyamide fibre 1B of just applying flexibly of loud speaker 10 can having been carried out.Therefore, can improve the sound equipment design freedom of the equipment (device) of automobile 15 grades of having carried loud speaker 10.
In addition, also loud speaker 10 can be assembled on the front panel 52, use as the part of car navigation or car audio frequency.
As mentioned above, diaphragm for loudspeaker of the present invention and use the loud speaker of this vibrating membrane can be applied in the device of the electronic equipment of the image audio equipment of the high structural property of essential precision, structure sound or information communication device etc. and then automobile etc.
Claims (22)
1. diaphragm for loudspeaker comprises:
Resin,
Aromatic polyamide fibre and
The organo-silicon compound of described resin and described aromatic polyamide fibre bond.
2. diaphragm for loudspeaker as claimed in claim 1, wherein,
Thickness is below the above 0.5mm of 0.2mm.
3. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described resin and described compoundization of aromatic polyamide fibre.
4. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described resin is crystalline olefin resin.
5. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described resin is noncrystalline olefin resin.
6. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described resin is a polypropylene.
7. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described resin is engineering plastics.
8. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described vibrating membrane also includes reinforcing material.
9. diaphragm for loudspeaker as claimed in claim 8, wherein,
Described reinforcing material by in mica, graphite, talcum and the cellulose fibre any one constitutes at least.
10. diaphragm for loudspeaker as claimed in claim 1, wherein,
Also include mobile material modified.
11. diaphragm for loudspeaker as claimed in claim 10, wherein,
Described flowability is material modified to be to have amino aliphatic acid.
12. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described organo-silicon compound have amino.
13. diaphragm for loudspeaker as claimed in claim 1, wherein,
The fibre length of described aromatic polyamide fibre is below the above 6mm of 0.3mm.
14. diaphragm for loudspeaker as claimed in claim 13, wherein,
The fibre length of described aromatic polyamide fibre is below the 3mm.
15. diaphragm for loudspeaker as claimed in claim 1, wherein,
Described aromatic polyamide fibre is more than 5% below 50% to the ratio of sneaking into of described resin.
16. a loud speaker comprises:
Magnetic circuit;
Framework, it is incorporated into described magnetic circuit;
Vibrating membrane, it comprises resin, aromatic polyamide fibre and the organo-silicon compound of bond described resin and described aromatic polyamide fibre, and is incorporated into the circumference of described framework;
Voice coil loudspeaker voice coil, it is incorporated into described vibrating membrane, and is disposed in the sphere of action of the magnetic flux that produces from described magnetic circuit.
17. an equipment comprises:
Main part and the loud speaker of powering from described main part reception,
Described loud speaker has:
Magnetic circuit;
Framework, it is incorporated into described magnetic circuit;
Vibrating membrane, it comprises resin, aromatic polyamide fibre and the organo-silicon compound of bond described resin and described aromatic polyamide fibre, and is incorporated into the circumference of described framework;
Voice coil loudspeaker voice coil, it is incorporated into described vibrating membrane, and is disposed in the sphere of action of the magnetic flux that produces from described magnetic circuit.
18. equipment as claimed in claim 17, wherein,
Described main part has the circuit of amplification to the input signal of described loud speaker at least.
19. equipment as claimed in claim 17, wherein,
The handwheel that described main part has car body, be arranged on drive division on the described car body, driven and support described drive bulk wheel, be arranged on the steering wheel on the described car body and operated by described steering wheel by described drive division,
Described loud speaker is arranged on the inside of described body.
20. the manufacture method of a diaphragm for loudspeaker comprises:
A) step of the mixing thing of the organo-silicon compound of modulation resin, aromatic polyamide fibre and bond described resin and described aromatic polyamide fibre;
B) step that described mixing thing is formed.
21. the manufacture method of diaphragm for loudspeaker as claimed in claim 20, wherein,
In the step B, described mixing thing is carried out injection moulding.
22. the manufacture method of diaphragm for loudspeaker as claimed in claim 20, wherein,
In the step A, make described mixing thing by heating granulation and by compoundization.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005122072 | 2005-04-20 | ||
| JP122072/2005 | 2005-04-20 | ||
| PCT/JP2006/306627 WO2006114980A1 (en) | 2005-04-20 | 2006-03-30 | Diaphragm for speaker, method for producing same, speaker using such diaphragm and apparatus using such speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101091413A true CN101091413A (en) | 2007-12-19 |
| CN101091413B CN101091413B (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800016253A Expired - Fee Related CN101091413B (en) | 2005-04-20 | 2006-03-30 | Diaphragm for speaker, method for producing the same, speaker using such diaphragm and apparatus using such speaker |
| CNU200620112565XU Expired - Lifetime CN2884766Y (en) | 2005-04-20 | 2006-04-18 | Speaker |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620112565XU Expired - Lifetime CN2884766Y (en) | 2005-04-20 | 2006-04-18 | Speaker |
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| WO (1) | WO2006114980A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006114980A1 (en) * | 2005-04-20 | 2006-11-02 | Matsushita Electric Industrial Co., Ltd. | Diaphragm for speaker, method for producing same, speaker using such diaphragm and apparatus using such speaker |
| JP4765904B2 (en) * | 2006-11-15 | 2011-09-07 | パナソニック株式会社 | Papermaking diaphragm for speaker, speaker using the same, and electronic device and apparatus using the speaker |
| JP2008193372A (en) * | 2007-02-05 | 2008-08-21 | Matsushita Electric Ind Co Ltd | Speaker diaphragm and speaker using the same, and electronic equipment and device using the same speaker |
| JP2008193370A (en) * | 2007-02-05 | 2008-08-21 | Matsushita Electric Ind Co Ltd | Speaker diaphragm and speaker using the same, and electronic equipment and device using the same speaker |
| JP7263358B2 (en) * | 2018-07-27 | 2023-04-24 | ヤマハ株式会社 | Speaker diaphragm and method for manufacturing speaker diaphragm |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5871797A (en) * | 1981-10-23 | 1983-04-28 | Pioneer Electronic Corp | Forming material for audio device |
| JPS62205147A (en) * | 1986-03-05 | 1987-09-09 | Chisso Corp | Sound vibrating plate and polypropylene composition therefor |
| JPH02293000A (en) * | 1989-05-02 | 1990-12-04 | Dainichi Kasei Kogyo Kk | Diaphragm for acoustic equipment |
| JPH06178385A (en) * | 1992-12-10 | 1994-06-24 | Nippon Petrochem Co Ltd | Electroacoustic converter |
| CN1036577C (en) * | 1993-01-08 | 1997-12-03 | 中国科学院青海盐湖研究所 | Process for prodn. of potassium sulphate using benzene dilution method |
| JP2001268686A (en) * | 2000-03-23 | 2001-09-28 | Idemitsu Petrochem Co Ltd | Diaphragm for electroacoustic transducer and its manufacturing method |
| WO2006114980A1 (en) * | 2005-04-20 | 2006-11-02 | Matsushita Electric Industrial Co., Ltd. | Diaphragm for speaker, method for producing same, speaker using such diaphragm and apparatus using such speaker |
-
2006
- 2006-03-30 WO PCT/JP2006/306627 patent/WO2006114980A1/en active Application Filing
- 2006-03-30 CN CN2006800016253A patent/CN101091413B/en not_active Expired - Fee Related
- 2006-04-18 CN CNU200620112565XU patent/CN2884766Y/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN101091413B (en) | 2012-10-17 |
| WO2006114980A1 (en) | 2006-11-02 |
| CN2884766Y (en) | 2007-03-28 |
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