CN1906965A - Speaker, speaker-use diaphragm, dust cap, production methods and production devices for them - Google Patents
Speaker, speaker-use diaphragm, dust cap, production methods and production devices for them Download PDFInfo
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- CN1906965A CN1906965A CN 200580001522 CN200580001522A CN1906965A CN 1906965 A CN1906965 A CN 1906965A CN 200580001522 CN200580001522 CN 200580001522 CN 200580001522 A CN200580001522 A CN 200580001522A CN 1906965 A CN1906965 A CN 1906965A
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Abstract
A speaker diaphragm or a dust cap formed by injection molding a mixture at least containing a resin material and a fiber material. The speaker diaphragm or the dust cap combines the advantages of both a paper diaphragm and a resin diaphragm. The advantage of a paper diaphragm is a large degree of freedom in setting physical properties. The advantages of a resin diaphragm are being excellent in moisture resistance reliability, strength, external appearance, productivity and dimension stability.
Description
Technical field
The present invention relates to the diaphragm for speaker and the dust cap that in various stereo sets and image documentation equipment, use.
Background technology
Fig. 9 shows traditional diaphragm for speaker that passes through the resin that injection moulding makes.In addition, Figure 10 shows traditional dust cap.As Fig. 9 and shown in Figure 10, diaphragm for speaker 207 or dust cap 209 are to use resins such as polypropylene, make the resin particle heat of solution in preestablishing the mould of shape, and pass through that injection moulding obtains.Below, attaching most importance to oscillating plate illustrates prior art.
The moulding material that is used for injection moulding uses macromolecular materials such as polypropylene usually separately.Also existing to regulate the characteristic and the tonequality of as the physical property value of oscillating plate or dust cap, promptly regulating as loud speaker in addition is the mixed type moulding material that purpose has been used different types of resin.In addition, for adjusting the physical characteristic that only is difficult to obtain, sneak into strengthening materials such as mica sometimes with resin.So just can regulate characteristic and tonequality as loud speaker.
In addition, in the prior art relevant with the invention of this application, for example known have the Japanese documentation spy to open clear 59-176995 communique and the flat 3-289298 communique of Te Kai.
Along with the marked improvement of digital technology, compared with the past, nearest stereo set and image documentation equipment (following general designation image stereo set) and even the performance that the devices such as automobile of these equipment have been installed have also obtained significant raising.
In recent years, the tonequality of image stereo set has further realized low distortion, wide bandwidth and high dynamic range, and then has strengthened verisimilitude.In addition, along with the appearance of heavy die blocks such as high definitionization and plasma scope with popularize, the quality of image has also obtained significant raising.Like this, along with the raising of image performance of acoustic, on the market also strong request improve the performance of employed loud speaker in these equipment.
On the other hand, in order to improve the performance of loud speaker, just must improve the oscillating plate that the accordatura matter of fighting to the finish plays an important role and the performance of dust cap in the component parts of loud speaker.
In the past the injection moulding of copying method made of paper, resin or the pressings of adopting such as oscillating plate are made more.So with paper oscillating plate or resin oscillating plate is main flow.Therefore, these oscillating plates utilize the feature of paper or resin, separate use according to its purposes, but there is technical problem separately in they, thereby are difficult to adapt to the requirement of high performance.
That is, the paper oscillating plate has the physical characteristic that can set oscillating plate subtly, thereby becomes big advantage as the characteristic of loud speaker and the adjusting degree of freedom of tonequality, but has the distinctive shortcoming of paper, the i.e. shortcoming of moisture-proof reliability and intensity difference.In addition, in order to make the paper oscillating plate, need be called very many operations of copying paper.
On the contrary, the resin oscillating plate can be guaranteed moisture-proof reliability and intensity, realizes remarkable outward appearance, can also boost productivity, but can only guarantee the distinctive unified physical characteristic of resin.Therefore, have as the characteristic of loud speaker and the very narrow shortcoming of adjustable range of tonequality.
In the past, these two kinds of oscillating plates were respectively applied in the manufacturing of loud speaker according to their features separately.And, also there is same technical problem about dust cap.
Next the manufacture method and the production equipment of traditional resin oscillating plate are described by Figure 11.Figure 11 shows the traditional method for manufacturing diaphragm for loudspeaker of the resin that injection moulding forms and procedure chart of production equipment of passing through.As shown in figure 11, polypropylene resins such as (to call PP in the following text) 221 is done mixing with the PP 222 that has added strengthening materials such as mica.Utilize granulation machine 224 with masterbatch 223 granulations of making.Next masterbatch pellet 225 is dropped in the injection machine 226.
In this injection machine 226, the masterbatch pellet 225 that drops into heated make it fusion, be expelled in the shaping dies 227 of oscillating plate by extruder then.The PP that is expelled in the shaping dies 227 takes out from shaping dies 227 in the curing back that is cooled.Can produce the resin oscillating plate 228 that utilizes PP etc. by above injection forming process.
As the resin material that is used for injection moulding, homogenous materials such as many usually use PP.In addition, in order to regulate physical characteristic, promptly regulate characteristic and tonequality sometimes, also use the mixed type material that has mixed different types of resin as loud speaker as oscillating plate.This mixed type material is a resin particle of pulverizing required kind by pulverizer, set proportioning separately then, makes by doing to mix.
As the prior art that is associated with the invention of this application, for example known have the Japanese documentation spy to open flat 1-248900 communique.
Along with the marked improvement of digital technology, compared with the past, the performance of electronic equipments such as nearest stereo set and image documentation equipment also is significantly improved.Therefore, along with the raising of described electronic equipment performance, on the market also strong request improve the performance of the loud speaker be used for these electronic equipments.
In order to improve the performance of loud speaker, just must improve the oscillating plate that the accordatura matter of fighting to the finish plays an important role and the performance of dust cap in the component parts of loud speaker.In order to improve the performance of described oscillating plate etc., recently, especially from the viewpoint of quality stability, water-fast reliability and design diversity, the resin oscillating plate is more welcome.
But,, can only send dull sound because this resin oscillating plate can only carry out the adjusting of loudspeaker performance, tonequality in the scope of the physical characteristics of materials of resin.Therefore be difficult to realize adapting to the diversified sound creation (creation) and the fine setting of market demands.Therefore, wish that the resin oscillating plate also can the sensitive paper oscillating plate set the physical characteristic of oscillating plate like that subtly, thereby obtain as the characteristic of loud speaker and the big physical characteristic of the adjusting degree of freedom of tonequality.
In order to realize such characteristic, can consider to mix with resin with as the paper pulp of paper material.Utilization is based on the manufacture method of current production equipment, and promptly dry mixed mixed method can be carried out the mixing between the variety classes resin.But, when hybrid resin and paper pulp, paper pulp can't be evenly dispersed in the resin, thereby existence can't reach the characteristic of expection and the problem of tonequality.
Summary of the invention
Therefore, oscillating plate of the present invention and dust cap are to carry out injection moulding by the material that will sneak into resin material and fiber material at least to constitute diaphragm for speaker or dust cap.Therefore, can obtain the advantage of the paper that the setting degree of freedom of physical characteristic is big and can guarantee moisture-proof reliability and intensity, the outward appearance brilliance can also be boosted productivity and oscillating plate or dust cap that the advantage of the resin of dimensional stability effectively combines.That is,, can carry out the characteristic of loud speaker and create and sound creation by the paper of failing to realize and effective combination of resin excellent physical properties separately in the past.
In addition, in these fiber materials, resin material and different materials, select and the suitable proportioning of setting, can carry out irrealizable in the past high-precision characteristic and regulate as the strengthening material of sneaking into material.
In addition, in appearance designs such as color, also can carry out multiple design by described combination.And, also can ad infinitum set change, thereby can satisfy the requirement in characteristic establishment, sound creation and appearance design based on described combination.
Manufacture method of the present invention is the diaphragm for speaker that formed by resin and this two or more material of packing material at least and make by injection moulding or the manufacture method of dust cap, in this manufacture method, in advance fibrous resin and packing material wet type are mixed and dewater, obtain composite material first, then with this first composite material with carry out the crushed granular resin by other operation synthetic again, obtain the secondary composite material, and with this secondary composite material injection moulding.
By this manufacture method, by wet mixed that fibrous resin and packing material is synthetic first in preceding operation in advance, and prepare to carry out the crushed granular resin by other operations, make their synthetic again secondary synthesis procedures make moisture and resin substitution by setting then, thereby resin is combined well with packing material, thereby can give play to good separately characteristics.
In addition, in manufacture method of the present invention, by wet mixed that fibrous resin and packing material is synthetic first in preceding operation in advance, and prepare to carry out the crushed granular resin by other operations, be provided with then and make their synthetic again secondary synthesis procedures.By such manufacture method, the moisture in the first synthetic wet mixed is evaporated in the secondary synthesis procedure, can make resin dissolves improve the entanglement of itself and packing material simultaneously, thereby reach good binding.
That is, this manufacture method makes resin combine well with packing material with resin substitution moisture, thereby has given play to resin and packing material good characteristics separately.Therefore, it is big to use the loud speaker of this oscillating plate can be made into the adjusting degree of freedom of characteristic and tonequality, can guarantee water-fast reliability of moisture-proof and intensity, and the also very remarkable loud speaker of its outward appearance.
By manufacture method of the present invention, production equipment, can be with high production rate and the physical characteristic of the paper oscillating plate that in the past must could obtain through very long machine hand's preface stably is provided.
Like this, the present invention can provide the diaphragm for speaker of high-quality of the characteristics that have resin and packing material concurrently or the manufacture method and the production equipment of dust cap, thereby has very large industrial value.
Description of drawings
Fig. 1 is the profile of the diaphragm for speaker of an embodiment of the present invention;
Fig. 2 is the plane graph of the diaphragm for speaker of an embodiment of the present invention;
Fig. 3 is the profile of the loud speaker of an embodiment of the present invention;
Fig. 4 is the outside drawing of the electronic equipment of an embodiment of the present invention;
Fig. 5 is the profile of the device of an embodiment of the present invention;
Fig. 6 is the procedure chart that the method for manufacturing diaphragm for loudspeaker of an embodiment of the present invention is shown;
Fig. 7 is the profile of the loud speaker of an embodiment of the present invention with dust cap;
Fig. 8 is the profile of the loud speaker of an embodiment of the present invention;
Fig. 9 is the profile of diaphragm for speaker in the past;
Figure 10 is the profile of traditional dust cap;
Figure 11 shows the procedure chart of traditional method for manufacturing diaphragm for loudspeaker.
Label declaration
21 magnets
22 upper boards
23 yokes
24 magnetic circuits
25 magnetic gaps
26 frameworks
27 oscillating plates
The 27A resin material
The 27B fiber material
28 voice coil loudspeaker voice coils
29 edges
30 loud speakers
41 shells
42 amplifiers
43 players
44 mini combined systems
50 automobiles
101 fibrous PP
102 paper pulp
103 wet mixed machines
104 composite materials first
105 dewaterers
The 106PP particle
107 pulverizers
108 graininess PP
109 blenders
110 secondary composite materials
111 granulation machines
The 112PP particle
113 moulds
114 injection machines
115 oscillating plates
116 strengthening materials
117 letdown resin
118 mixers
120 production equipments
129 dust caps
The 129A resin material
The 129B fiber material
Embodiment
Below utilize accompanying drawing that embodiments of the present invention are described.
(first execution mode)
Below utilize first execution mode that diaphragm for speaker of the present invention is described.
Fig. 1 and Fig. 2 show the oscillating plate of an embodiment of the invention.
Oscillating plate 27 is to make by the moulding material injection moulding that will mix resin material 27A and paper pulp 27B.The resin material 27A of this oscillating plate 27 uses crystallization or amorphous olefin resin.
Can realize good forming property by using olefin resin.In addition, by crystallization and amorphous resin material are used by its purposes difference, can obtain optimum physical characteristic as resin material.
Below to using polypropylene to describe as the situation of resin material 27A.General easy the obtaining of polypropylene, also easy injection moulding.But the present invention is not limited to polypropylene, can separately use various resin materials according to the desired characteristics value.For example, under the situation that needs high-fire resistance and high solvent resistance, also can use the engineering plastics that meet this purposes.For example also can use PETG (PET), polybutylene terephthalate (PBT) (PBT) etc.
In the first embodiment, use polypropylene to be used as the resin material 27A of base material, use sulfate pulp to be used as fiber material 27B as lumber fibre.With the oscillating plate that only is made of resin is that dull dull tone color is opposite mostly, and the oscillating plate that has mixed lumber fibre in resin can reproduce the bright tone color of nature.In addition, except sulfate pulp, by being used in combination the composite fibre of sulfite pulp or sulfate pulp and sulfite pulp, can be further near desired characteristics and tonequality.
In addition, as fiber material 27B, also can use a kind of in the following material separately or mix and use multiple in the following fiber material, that is: leaf fibre (leaf fiber), bast fiber (bastfiber), seed fiber (seed fiber), fruit fiber (fruit fiber), fasciated fiber sponges such as (stemfiber), and animal origin materials such as (animal fibre).By sneaking into these materials of appropriate amount, can be further near desired characteristics and tonequality.Here, leaf fibre helps to improve the intensity of oscillating plate 27, uses abaca more.In addition, bast fiber helps to improve the toughness intensity of oscillating plate, uses mulberry, yellow winter daphne, wild goose skin, fiber crops etc. more.In addition, seed fiber helps to improve the internal losses of oscillating plate, cotton, the velveteens of using more.In addition, fruit fiber also helps to improve the internal losses of oscillating plate, uses kapok more.In addition, fasciated fiber helps to improve the spring rate of oscillating plate, can use materials such as bamboo, the leaf of bamboo, mestha, straw.In addition, in order to realize using the fine setting of the tonequality that string can't obtain, also can sneak into materials such as silk as animal origin, wool and finely tune intensity and internal losses.
Can make the moulding material of having sneaked into following strengthening material and be configured as oscillating plate.Described strengthening material for example is organic highly elastic fiber, mica or the graphite etc. of ceramic fibre, nylon of carbon fiber, glass or the boron etc. of metallic fiber, carbon of aluminium etc. etc. etc.Thus, can strengthen oscillating plate, perhaps can how much give tone, or make sound pressure frequency characteristic have peak value to regulate tonequality by giving sound.
In addition, by in moulding material, sneaking into materials such as ZnOw, can guarantee to be provided with the tonequality of the internal losses that above-mentioned material can't satisfy.
By the material of above explanation is used separately respectively, perhaps they are used in combination, can be free and the physical characteristic of regulating oscillating plate accurately, thus can realize desired characteristics and tonequality.
About described desired characteristics and tonequality, need darker proprietary technology be arranged to the establishment of physical characteristic and the establishment of sound, be mostly to implement usually by means shown below.
When the characteristic of carrying out loud speaker is created and during sound creation, by changing the parameter of its component parts, regulating characteristics to a certain extent thus can be near desired characteristics and tonequality.For example, the parameter of the miscellaneous part in the component parts of loud speaker except that oscillating plate is fixed as under the constant situation, and the variable element of oscillating plate also has area, shape, weight, thickness etc. except its physical characteristic.If consider that area, shape, weight, fixed thickness with oscillating plate are constant situation, then can determine the sound pressure frequency characteristic and the tonequality of loud speaker substantially with the condition beyond the physical characteristic of oscillating plate.At this moment, on this sound pressure frequency characteristic, how can produce unnecessary peak value (peak) and valley (dip), and on specific frequency band, tangible distortion take place.And tonequality also can be subjected to the influence of sound pressure frequency characteristic significantly.The reason that influences these characteristics results from the area of this oscillating plate, shape, weight, thickness, especially because they have determined the vibration mode of oscillating plate.
The present invention can be used as and above-mentionedly is used to improve unwanted peak valley, distortion and uses with the selection approach of the oscillating plate material that obtains good tonequality.At first, selectedly from resin material, fiber material etc. think the material that can satisfy the desired sound pressure frequency characteristic of loud speaker and tonequality, reliability step.At this moment, about resin material, particularly pay attention to reliability such as its thermal endurance class and select, and the intrinsic tone color of selected each resin material is near the material of the tone color of expectation as base material.Then, selected unwanted peak value and the effective material of valley to wanting on the elimination sound pressure frequency characteristic to delete.On the other hand, under the situation that has solved peak value, selected frequency has the material of internal losses.When selected material, sneak into material for resin material, fiber material and other, consider that the distinctive density of this material, spring rate, internal losses, tone color, the resonance frequency when being configured as the oscillating plate shape wait and select.
Stir selected material, make the masterbatch pellet of high paper pulp loading.Then, use the masterbatch pellet of high paper pulp loading to obtain the oscillating plate 27 of present embodiment by injection moulding.
Physical characteristic of the oscillating plate 27 of such acquisition etc. is measured and estimated.Use this oscillating plate 27 to have a fling at loud speaker, and, carry out final evaluation by its loud speaker as reality is carried out the measurement and the audition of characteristic and tonequality.
When described evaluation illustrates when failing to meet the desired characteristic and tonequality, have a fling at process repeatedly.In this process, the proportioning of the selected and material of research material is so that move closer to target property and tonequality.
By carrying out above process repeatedly, can realize desired characteristics and tonequality, perhaps can realize very approaching performance at least.
In addition, the fibre length that is used for the fiber material of oscillating plate of the present invention is preferably 0.2mm～20mm.By adopting this scope, the effect in the time of can having given play to it expeditiously and mix with resin material, and can boost productivity and quality.If the fibre length of fiber material is shorter than 0.2mm, then can't give play to the effect of fiber material expeditiously.On the contrary, if longer than 20mm, then because the secondary that the entanglement between the fiber produces is assembled, take place to disperse bad easily, existing thus needs the incorporation time of length, perhaps flies out paper pulp fiber on the surface of oscillating plate and diminishes the problem of outward appearance etc.
In addition, the fiber material blending ratio of sneaking in the resin material is preferably 5% to 70%.By adopting this scope, the effect in the time of can having given play to resin material and fiber material mixing expeditiously, and can boost productivity and quality.Here, if the blending ratio less than 5% of paper pulp then almost can not manifest the effect of mixed pulp.On the contrary,, then begin to manifest the shortcoming of paper pulp, cause oscillating plate intensity, productivity ratio, moisture-proof reliability and dimensional stability all to reduce if greater than 70%.
In appearance design, if the color of wishing oscillating plate is a black system, then using by black dyes is paper pulp to the black that self-colored paper pulp carries out after painted, then uses in substrate resin hybrid pigment etc. on the other hand and the resin particle of the black system of making.In addition, as additive method, also can be when mixing Natural color paper pulp and Natural color resin material and produce the masterbatch pellet of high paper pulp loading, the pigment of sneaking into black system carries out painted.Like this, be black system by the color that makes oscillating plate, can realize and traditional oscillating plate similar design.
In addition, be not limited to black system, for all colors can adopt use the same method carry out painted.And, also can not use colouring agents such as these dyestuffs, pigment, and be to use Natural color itself, carry out with more the nature and with the corresponding color of environment be the design of keynote.
In addition,, also can make fiber material and resin material have different colors, thereby realize highlighting the design of in an oscillating plate, having sneaked into the situation of two kinds of materials as other method for designing.At this moment, preferably clear or translucent resin.
As mentioned above, this first execution mode relates to use and has mixed the material of resin material and fiber material and the diaphragm for speaker of making by injection moulding.According to the present invention, can obtain oscillating plate that the following advantages of the following advantage of paper oscillating plate and resin oscillating plate is got up, the paper oscillating plate has the big advantage of the setting degree of freedom of the physical characteristic of oscillating plate, the resin oscillating plate has can guarantee moisture-proof reliability and intensity, the outward appearance brilliance can also be boosted productivity and the advantage of dimensional stability.
Therefore, the characteristic with paper oscillating plate and resin oscillating plate both sides' the effective combination of physical characteristic that can carry out in the past can't realizing is created and sound creation.In addition, also can be in its appearance design by the diversified design of the incompatible realization of the color group between fiber material and the resin material.
(second execution mode)
Fig. 3 shows the profile of the loud speaker of an embodiment of the present invention.As shown in Figure 3, the magnet 21 that has magnetized is clipped between upper board 22 and the yoke 23 constitutes internal magnetic type magnetic circuit 24.
The yoke 23 of this magnetic circuit 24 is positioned on the framework 26.The periphery of Shuo Ming oscillating plate 27 is engaged with on the edge part of this framework 26 by edge 29 in the first embodiment.And an end of voice coil loudspeaker voice coil 28 is connected with the central part of this oscillating plate 27, and its other end then is inserted in the magnetic gap of above-mentioned magnetic circuit 24.
In second execution mode, the loud speaker with internal magnetic type magnetic circuit 24 is illustrated, but the invention is not restricted to this, also can be applied to have the loud speaker of external magnetic type magnetic circuit.In addition, also can be applied to oscillating plate 27 and edge 29 incorporate such as the miniature loudspeaker that is used for mobile phone.
By said structure, as describing in the first embodiment, can realize the big high loud speaker of outward appearance brilliance, productivity ratio that also can guarantee moisture-proof reliability and intensity of the adjusting degree of freedom of characteristic, tonequality.
The oscillating plate of the application of the invention is made loud speaker, can realize can't realizing in the past, the high-precision characteristic of paper oscillating plate and resin oscillating plate both sides' the effective combination of physical characteristic is created and sound creation.And in appearance designs such as color, can also make up and obtain diversified design by it.
And, change can be ad infinitum set, thereby the loud speaker that can satisfy desired requirement in the establishment of establishment, sound of characteristic and the appearance design can be implemented in based on described combination.
(the 3rd execution mode)
Fig. 4 shows as the audio frequency of the electronic equipment of an embodiment of the present invention outside drawing with mini combined system.As shown in Figure 4, the loud speaker 30 that will illustrate in second execution mode of the present invention is assembled in the shell 41, constitutes speaker system.Comprise as the amplifier 42 of the amplifying device of the signal of telecommunication in the input loud speaker 30 and output player 43 with mini combined system 44 as the audio frequency of electronic equipment to the source signal of these amplifier 42 inputs.
The oscillating plate of the application of the invention is made speaker system, can realize such electronic equipment, the high-precision characteristic establishment that this electronic equipment can carry out can't realizing in the past, sound creation and design with paper oscillating plate and resin oscillating plate both sides' the effective combination of characteristics.
(the 4th execution mode)
Fig. 5 shows the profile as the automobile 50 of the device of an embodiment of the present invention.As shown in Figure 5, automobile 50 comprises the loud speaker 30 that uses oscillating plate of the present invention, and this loud speaker 30 is assembled in rear supporting plate (rear tray) or the front panel, and constitutes the part of vehicle navigation device or automobile audio.
By such formation, high-precision characteristic establishment, sound creation and the design with paper oscillating plate and resin oscillating plate both sides' the effective combination of characteristics of loud speaker 30 can be carried out, thereby the design freedom of the sound equipment on the devices such as automobile of special requirement moisture-proof reliability and intensity can be improved.
Next with reference to accompanying drawing manufacture method of the present invention and manufacturing installation are described.
(the 5th execution mode)
Fig. 6 shows the procedure chart of manufacture method of the oscillating plate of an embodiment of the present invention.
In the A1 operation, mix thereby will make fibrous PP 101 in advance and under the situation that adds a large amount of water, stir fully as the paper pulp 102 of packing material by wet mixed machine 103.In the A2 operation, the mixture that is obtained is put into dewaterer 105 dewater then, make it contain an amount of moisture, obtain composite material 104 first thus.At this moment, the paper pulp 2 as packing material uses sulfate pulp (NUKP).
In addition, in other B1 operation, the PP particle 106 by pulverizer 107 is pulverized as resin material obtains granular PP 108.
Next, in the C1 operation, will be synthetic once more by blender 109 through above-mentioned A1 operation and A2 operation composite material of making first 104 and the granular PP 108 that in the B1 operation, makes.In this C1 operation, replace by the moisture that contained in the composite material first 104 that makes wet mixed and fibrous PP 101 and/or granular PP 108, carry out finely disseminated each other synthetic.
Here, replace the method that operation is preferably synthesized by heat drying.This method is that composite material 104 and granular PP 108 drop in the blender 109 first, make residual water evaporates by heat drying, make fibrous PP and granular PP 108 fusions simultaneously, thereby moisture and PP are replaced.Through this displacement operation, the entanglement that can improve PP and paper pulp makes their combinations well, thereby efficient synthetic.Can obtain PP and the finely disseminated secondary composite material 110 of paper pulp by this operation.
Utilize injection machine 114 under the situation of heating, secondary composite material 110 to be expelled to the inside of mould 113, obtain oscillating plate 115 thus.At last, with these oscillating plate 115 cooling curings, from mould 113, take out.
Can be manufactured on the oscillating plate 115 of even dispersing pulp among the PP by above operation.
In addition, before injection moulding, also can be provided with secondary composite material 110 is passed through the granulation machine 111 C2 operation of granulation once more.The particle product injection moulding that utilizes injection machine 114 to make in the C2 operation can obtain the better oscillating plate 115 of dispersion of PP and paper pulp.
In addition, that can carry out strengthening material 116 such as mica or letdown resin 117 when carrying out C1 operation synthetic again sneaks into step D 1, also can increase after C1 operation or C2 operation and sneak into step D 1.By the D1 operation is set, can further finely tune the physical characteristic of oscillating plate.If sneak into strengthening materials 116 such as mica, then can improve the rigidity of oscillating plate, thereby can realize correspondingly loudspeaker performance and tonequality.In addition, if sneak into letdown resin 117, then oscillating plate can obtain mainly to show the characteristic of resin properties, thereby can realize correspondingly loudspeaker performance and tonequality.
In addition, by in packing material, using paper pulp, can make the resin oscillating plate have more character near the paper oscillating plate.By using PP, can realize high rate/low cost production as resin.
By adopting the manufacture method of the 5th execution mode, resin is combined well with packing material, thereby can give play to good characteristic separately.Therefore, use the loud speaker of this oscillating plate, the adjusting degree of freedom of its characteristic and tonequality is big, can guarantee water-fast reliability of moisture-proof and intensity, and can obtain remarkable outward appearance.
By adopting the manufacture method of the 5th execution mode, the characteristic value that can be had with the paper oscillating plate that high production rate and realization stably must could obtain through very long machine hand's preface in the past.
(the 6th execution mode)
In the 6th execution mode, utilize Fig. 6 that the production equipment of diaphragm for speaker of the present invention is described.
Production equipment 120 of the present invention has: as the wet mixed machine 103 of the wet mixed device of this two or more material of hybrid resin and packing material at least; Dewaterer 105 as dewater unit; Pulverizer 107 as the resin-oatmeal crushing device; Blender 109 as synthesizer; Shaping dies 103; And as the injection machine 114 of injection molding device for molding.
Can realize such production equipment by as above constituting, this production equipment can carry out by wet mixed the mixing of fibrous resin and packing material, synthesize, be used to obtain the synthetic of the pulverizing of particulate resins and the displacement by moisture and resin, thereby can improve the entanglement of resin and packing material, obtain dispersiveness uniformly, and resin and packing material good characteristic is separately brought into play.
Production equipment of the present invention also can have mixer 118.Mixer 118 is resinous and the resinous material of strengthening material 116 or devices of letdown resin 117 of hybrid packet.By having mixer 118, can further finely tune the physical characteristic of oscillating plate.That is, mix the resinous material comprise strengthening material, then can improve the rigidity of oscillating plate, on the contrary,, then can regulate physical characteristic towards the direction of the resin physical characteristic of further raising oscillating plate if append the mixed diluting resin if append.Can realize such production equipment thus, this production equipment can improve the dispersiveness of resin and packing material, has given play to these materials good characteristic separately, can also carry out the further fine setting of oscillating plate physical characteristic simultaneously.
Manufacturing to diaphragm for speaker in the above-mentioned the 5th and the 6th execution mode is illustrated.Certainly the manufacturing that also can be applicable to dust cap of the present invention according to the manufacturing equipment of the present invention and the manufacture method of the 5th and the 6th execution mode.
(the 7th execution mode)
Fig. 7 shows the profile of the dust cap of an embodiment of the present invention.
As shown in Figure 7, dust cap 129 is by the composite material injection moulding of resin material 129A and fiber material 128B is made.The material of this dust cap 129 uses crystallization or amorphous olefin resin.
In addition, fiber material 129B preferably uses a certain or its combination in leaf fibre, bast fiber, seed fiber, fruit fiber, the fasciated fiber.In addition, also can in this fiber material 129B, sneak into the material of animal origin etc.By sneaking into these materials, can be further near desired characteristics and tonequality, and regulating characteristics arbitrarily.
For the fine setting of the tonequality that realizes to obtain, sneak into as materials such as the silk of animal origin or wools, thereby can also finely tune intensity and internal losses by above-mentioned string.
Can make the moulding material of having sneaked into following strengthening material and be configured as oscillating plate.Described strengthening material for example is organic highly elastic fiber, mica or graphite etc. such as the ceramic fibre, nylon of carbon fiber, glass or the boron etc. of metallic fiber, carbon of aluminium etc. etc.Thus, can strengthen dust cap 129, perhaps can how much give tone, or make sound pressure frequency characteristic have peak value to regulate tonequality by giving sound.
In addition, if seek out the tonequality that is provided with the internal losses that above-mentioned material can't satisfy, also can sneak into materials such as ZnOw.
By the material of above explanation is used separately respectively, perhaps they are used in combination, can be free and the physical characteristic of regulating dust cap 29 accurately, thus can realize desired characteristics and tonequality.
Physical characteristic to the dust cap 129 of such acquisition is measured and is estimated.Use this dust cap 129 to have a fling at loud speaker, and, implement final evaluation by its loud speaker as reality is carried out the measurement and the audition of characteristic and tonequality.
When described evaluation illustrates when failing to meet the desired characteristic and tonequality, have a fling at process repeatedly.In this process, the proportioning selected and material of material is improved, so that move closer to target property and tonequality.
By carrying out above process repeatedly, can realize desired characteristics and tonequality, perhaps can realize very approaching performance.
In addition, the fibre length of fiber material of the present invention is preferably 0.2mm～20mm.By such formation, the effect in the time of can having given play to it expeditiously and mix with resin material, and can boost productivity and quality.
In addition, fiber material is sneaked into the blending ratio preferred 5% to 70% in the resin material.By such formation, the effect in the time of can having given play to it expeditiously and mix with resin material, and can boost productivity and quality.
As mentioned above, by sneaking into the big paper pulp of internal losses, can reduce unnecessary peak value and the valley that resonance (divisional resonance) is produced of cutting apart by dust cap 129, as common effect, dust cap 129 is accepted to vibrate from the amplitude of oscillating plate 27 usually.
And for the bad resin of adherence, because the existence of paper pulp can improve adherence.
In addition,, also can make fiber material 129A have different colors, thereby realize highlighting the design of in a dust cap 129, having sneaked into the situation of two kinds of materials with resin material 129B as other method for designing.At this moment, preferably clear or translucent resin material.
As mentioned above, the present invention by using resin material 129A and fiber material 129B composite material and utilize injection moulding to constitute loud speaker with dust cap 129, can utilize the effect of the big paper pulp of internal losses to reduce by cutting apart unnecessary peak value and the valley that resonance produces.
In addition, can obtain the dust cap of the effective combination of following advantage that following advantage that paper is had and resin had, wherein the advantage of paper is that the setting degree of freedom of physical characteristic of dust cap 129 is big, adherence is good, the advantage that resin had is to guarantee water-fast reliability of moisture-proof and intensity, the outward appearance brilliance can also be boosted productivity and dimensional stability.
Therefore, the characteristic that can realize the physical characteristic of effectively utilizing paper and resin both sides that in the past can't realize is created and sound creation.
In addition, also can be in its appearance design by the diversified design of the incompatible realization of the color group between fiber material and the resin material.
(the 8th execution mode)
Fig. 8 shows the profile of the loud speaker of an embodiment of the present invention.As shown in Figure 8, the magnet 21 that has magnetized is clamped between upper board 22 and the yoke 23 constitutes internal magnetic type magnetic circuit 24.
The yoke 23 of this magnetic circuit 24 is positioned on the framework 26.The periphery of oscillating plate 27 is engaged with on the edge part of this framework 26.And an end of voice coil loudspeaker voice coil 28 is connected with the central part of this oscillating plate 27, and its other end then is inserted in the magnetic gap of above-mentioned magnetic circuit 24.
In addition, dust cap 129 is bonded in a side opposite with voice coil loudspeaker voice coil 28 of the central part of this oscillating plate 27.
In the 8th execution mode, the loud speaker with internal magnetic type magnetic circuit 24 is illustrated, but the invention is not restricted to this, also can be applicable to have the loud speaker of external magnetic type magnetic circuit.
By in dust cap 129, sneaking into the big paper pulp of internal losses, can reduce by cutting apart unnecessary peak value and the valley that resonance produces.
In addition, can also realize that the adjusting degree of freedom of characteristic and tonequality is big, can guarantee moisture-proof reliability and intensity, and outward appearance brilliance, loud speaker that productivity ratio is high.
Therefore, by use the dust cap 129 to realize in the past, can improve tonequality and realize that high-precision characteristic creates and sound creation paper and resin both sides' the effective combination of physical characteristic.And in appearance designs such as color, also can make up and realize diversified design by it.
Change can be diversely set, thereby the loud speaker that can satisfy desired requirement in the setting of setting, tonequality of characteristic and the appearance design can be implemented in based on described combination.
Here, about the importance of 129 pairs of decisions characteristic of dust cap in the loud speaker component parts and tonequality, its area, volume, weight are big more, and its influence is also just big more.
Because dust cap 129 is configured or adheres to the front surface portion of oscillating plate 27, therefore when the overall dimension of dust cap 129 had with approaching big or small of the overall dimension of oscillating plate 27, dust cap might be also bigger than oscillating plate for the influence of the decision of characteristic and tonequality.
Said structure especially is common in by dust cap and cuts off physically by in the high band component of oscillating plate generation and the mega bass loudspeaker of medium-high frequency band component etc.
This is because though dust cap vibrates by the amplitude that is caused by oscillating plate and sounds, direct sound in intelligent's ear more is the sound that is sent by dust cap than oscillating plate.
Thereby, can greatly influence the characteristic and the tonequality of loud speaker by material, the physical characteristic of dust cap.Therefore, also can be formed in the structure of dust cap in the component parts of loud speaker for the contribution maximum of the characteristic of loud speaker and tonequality.
(the 9th execution mode)
Fig. 4 shows as the audio frequency of the electronic equipment of an embodiment of the present invention outside drawing with mini combined system.
Utilize mini combined system 44 shown in Figure 4 to show the loud speaker 30 that will adopt dust cap 129 of the present invention and be assembled into example in the shell 41.Mini combined system 44 comprises loud speaker 30, as the amplifier 42 of the amplifying device of the signal of telecommunication of input in the loud speaker and output player 43 to the source signal of these amplifier 42 inputs.
(the tenth execution mode)
Fig. 5 shows the profile as the automobile 50 of the device of an embodiment of the present invention.
As shown in Figure 5, automobile 50 comprises loud speaker 30 of the present invention, and this loud speaker 30 is assembled in rear supporting plate and the front panel, and constitutes the part of vehicle navigation device or automobile audio.
The loud speaker of the application of the invention can improve the design freedom of the sound equipment on the device such as automobile of special requirement moisture-proof reliability and intensity.
In above-mentioned the 8th to the tenth execution mode, the example that notion of the present invention is applied to dust cap 129 is illustrated.Dust cap of the present invention and traditional oscillating plate are used in combination also passable, but preferably use dust cap of the present invention and oscillating plate of the present invention simultaneously, can realize more high performance loud speaker and more high performance image stereo set thus.
Industrial applicibility
Diaphragm for speaker of the present invention, dust cap, loudspeaker, electronic equipment and device can be answered High-precision characteristic creates and image stereo set and the information communication of sound creation are established for carrying out Standby wait electronic equipment, and in the device such as automobile.
In addition, the manufacture method of diaphragm for speaker of the present invention or dust cap can be produced and have concurrently Therefore resin and as the oscillating plate of the feature of the fibrous material of packing material can be applicable to want obtain tree Employed diaphragm for speaker in the various stereo sets of fat oscillating plate and paper oscillating plate both sides characteristics Or in the devices such as the manufacture method of dust cap and production equipment.
Claims (39)
1. the loud speaker with oscillating plate is characterized in that, described oscillating plate is the injection moulding thing that the mixture by resin material and fiber material constitutes.
2. loud speaker as claimed in claim 1 is characterized in that, also has the dust cap that engages with described oscillating plate, and described dust cap is the injection moulding thing that the mixture by described resin material and described fiber material constitutes.
3. loud speaker as claimed in claim 1 is characterized in that, described resin material is crystallization or amorphous olefin resin.
4. loud speaker as claimed in claim 1 is characterized in that, described resin material is polypropylene or engineering plastics.
5. loud speaker as claimed in claim 1 is characterized in that, described fiber material comprises at least a fiber in lumber fibre, leaf fibre, bast fiber, seed fiber, fruit fiber, fasciated fiber, the animal origin.
6. loud speaker as claimed in claim 5 is characterized in that, described lumber fibre comprises at least a in sulfate pulp, the sulfite pulp.
7. loud speaker as claimed in claim 1 is characterized in that described mixture also comprises strengthening material.
8. loud speaker as claimed in claim 1 is characterized in that, the fibre length of described fiber material is 0.2mm～20mm.
9. loud speaker as claimed in claim 1 is characterized in that, it is 5% to 70% described fiber material that described mixture comprises percentage by weight.
10. loud speaker as claimed in claim 2 is characterized in that, the color of described oscillating plate or described dust cap is black system or Natural color.
11. loud speaker as claimed in claim 2 is characterized in that, described oscillating plate or described dust cap comprise the described resin material and the described fiber material of the color that differs from one another.
12. loud speaker as claimed in claim 11 is characterized in that, described oscillating plate or described dust cap comprise transparent or semitransparent described resin material.
13. a diaphragm for speaker is characterized in that, this oscillating plate is the injection moulding thing that the mixture by resin material and fiber material constitutes.
14. oscillating plate as claimed in claim 13 is characterized in that, described resin material is crystallization or amorphous olefin resin.
15. oscillating plate as claimed in claim 13 is characterized in that, described fiber material comprises at least a fiber in lumber fibre, leaf fibre, bast fiber, seed fiber, fruit fiber, fasciated fiber, the animal origin.
16. oscillating plate as claimed in claim 13 is characterized in that, described mixture also comprises strengthening material.
17. oscillating plate as claimed in claim 13 is characterized in that, the fibre length of described fiber material is 0.2mm～20mm.
18. oscillating plate as claimed in claim 13 is characterized in that, it is 5% to 70% described fiber material that described mixture comprises percentage by weight.
19. oscillating plate as claimed in claim 13 is characterized in that, the color of described oscillating plate is black system or Natural color.
20. oscillating plate as claimed in claim 13 is characterized in that, described oscillating plate comprises the described resin material and the described fiber material of the color that differs from one another.
21. oscillating plate as claimed in claim 20 is characterized in that, described oscillating plate comprises transparent or semitransparent described resin material.
22. a loud speaker dust cap is characterized in that, this dust cap is the injection moulding thing that the mixture by resin material and fiber material constitutes.
23. dust cap as claimed in claim 22 is characterized in that, described resin material is crystallization or amorphous olefin resin.
24. dust cap as claimed in claim 22 is characterized in that, described fiber material comprises at least a fiber in lumber fibre, leaf fibre, bast fiber, seed fiber, fruit fiber, fasciated fiber, the animal origin.
25. dust cap as claimed in claim 22 is characterized in that, described mixture also comprises strengthening material.
26. dust cap as claimed in claim 22 is characterized in that, the fibre length of described fiber material is 0.2mm～20mm.
27. dust cap as claimed in claim 22 is characterized in that, it is 5% to 70% described fiber material that described mixture comprises percentage by weight.
28. dust cap as claimed in claim 22 is characterized in that, the color of described dust cap is black system or Natural color.
29. dust cap as claimed in claim 22 is characterized in that, described dust cap comprises the described resin material and the described fiber material of the color that differs from one another.
30. dust cap as claimed in claim 29 is characterized in that, described dust cap comprises transparent or semitransparent described resin material.
31. the electronic equipment with loud speaker is characterized in that, the oscillating plate of described loud speaker and dust cap are the injection moulding things that the mixture by resin material and fiber material constitutes.
32. electronic equipment as claimed in claim 31 is characterized in that, described electronic equipment is a mobile unit.
33. the manufacture method of oscillating plate or dust cap comprises: the step of fibrous resin and packing material being carried out wet mixed; By being dewatered, described mixture makes the dehydration of composite material first; Described resin-oatmeal is broken into granular step; Make the step of secondary composite material by mixing described composite material first and described granular resin; And with the step of described secondary composite material injection moulding.
34. manufacture method as claimed in claim 33 is characterized in that, the step that obtains described secondary composite material has the step with moisture and resin substitution.
35. manufacture method as claimed in claim 34 is characterized in that, described displacement step is the step that makes the mixture granulation of described composite material first and described particulate resins by heat drying.
36. manufacture method as claimed in claim 33 is characterized in that, also has the step that makes described secondary composite material granulation.
37. manufacture method as claimed in claim 33 is characterized in that, in the step that obtains described secondary composite material, or after the step that obtains described secondary composite material, also has the step of sneaking into of sneaking into strengthening material or letdown resin.
38. the manufacturing installation of oscillating plate or dust cap comprises: the device that fibrous resin and packing material is carried out wet mixed; By being dewatered, described mixture makes the dewaterer of composite material first; Resin-oatmeal is broken into granular pulverizer; By mixing the mixer that described composite material first and described particulate resins are made the secondary composite material; And the injection machine that described secondary is composite formed.
39. manufacturing installation as claimed in claim 38 is characterized in that, also has the mixer of described secondary composite material with resin material that comprises strengthening material or letdown resin mixing.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004041113A JP4442247B2 (en) | 2004-02-18 | 2004-02-18 | Speaker diaphragm, speaker using the same, and electronic device and apparatus using the speaker |
| JP041113/2004 | 2004-02-18 | ||
| JP041114/2004 | 2004-02-18 | ||
| JP061969/2004 | 2004-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1906965A true CN1906965A (en) | 2007-01-31 |
Family
ID=35019028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580001522 Pending CN1906965A (en) | 2004-02-18 | 2005-02-01 | Speaker, speaker-use diaphragm, dust cap, production methods and production devices for them |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4442247B2 (en) |
| CN (1) | CN1906965A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2005236497A (en) | 2005-09-02 |
| JP4442247B2 (en) | 2010-03-31 |
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