close

Вход

Забыли?

вход по аккаунту

?

JP2006041984

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2006041984
The present invention relates to a method of manufacturing an edge for a speaker used in
various audio devices, and improves the shape retention characteristics of the edge, and
improves the performance, the input resistance, the quality, and the reliability. The challenge was
to realize a manufacturing method that could A method of manufacturing an edge for a speaker
according to the present invention includes a step of subjecting a substrate to a surface
modification treatment prior to a step of resin coating the substrate, thereby improving the
wettability. By making the base material and the coating resin conform well, the base material
can be sufficiently impregnated with the resin, and the bonding strength between the base
material and the resin can be strengthened. [Selected figure] Figure 1
Method of manufacturing speaker edge, speaker edge, speaker diaphragm and speaker using the
same, electronic device, device
[0001]
The present invention relates to a method of manufacturing a speaker edge used for various
audio devices, a speaker edge, a speaker diaphragm and a speaker, and various electronic devices
and various devices.
[0002]
As recent market trends in the audio industry, even with the advent of digitization and highquality sound media, higher performance is required.
12-05-2019
1
Among the market trends described above, a speaker, which is a device constituting an audio
device, is required to have a higher performance, a higher input resistance, and a higher
reliability than ever before. This is particularly significant for vehicle-mounted speakers that
require long-term performance guarantees, centering on digitization by expanding the dynamic
range accompanying digitization of inputs.
[0003]
Based on the above background, a conventional method for manufacturing a speaker edge will be
described. FIG. 7 is a manufacturing process diagram showing a conventional method of
manufacturing a speaker edge. As shown in FIG. 7, a resin coating is applied to a previously
prepared substrate. In this resin coating process, the base material and the resin are complexed
to add a function as a excipient, and also to add a function as a filling for blocking air
permeability.
[0004]
The resin coated substrate is then dried. In this drying step, the resin-coated substrate is in the
form of a prepreg.
[0005]
Next, molded into an edge shape. In this molding process, heat press molding using a mold is
generally used, and the coated resin is thermally cured from the prepreg state by this heat press
molding to maintain a stable shape.
[0006]
Next, in the trimming step, the inner diameter and the outer diameter as an edge are punched out
by a die and finished as a speaker edge.
[0007]
12-05-2019
2
As prior art document information related to the invention of this application, for example,
Patent Document 1 is known.
Japanese Patent Application Laid-Open No. 4-274699
[0008]
The speaker is manufactured using the edge manufactured by the manufacturing method of the
edge for the conventional speaker, and it is used in various fields, but high performance, high
input resistance, and high reliability are made as recent problems Problems are emerging that
will affect the This cause is largely due to the effect of the expansion of the dynamic range
accompanying the digitization of the input, that is, the improvement of the output on the use
side.
[0009]
Furthermore, in automotive applications, with the aim of achieving high quality and high
reliability for long-term performance guarantee, stringent quality and reliability requirements
have not been made for devices used in these automotive applications. .
[0010]
In the background as described above, when using the edge manufactured by the conventional
method for manufacturing an edge of a speaker, an excessive load is applied to the edge to cause
a large decrease in the F0 value of the speaker or vibration of the speaker. It is not possible to
support the system, and it causes a quality problem such as causing gap failure.
The cause of this is the destruction of the shape retention characteristic due to the overload of
the edge itself during the operation of the speaker. This phenomenon is a phenomenon that
occurs because the bonding strength between the edge substrate and the resin coated on the
edge substrate is reduced.
[0011]
12-05-2019
3
In addition to this, especially in automotive applications, there are many conditions of use in high
temperature and humidity environments, and even if resin coating is applied to the edge, the
base material absorbs moisture if the fit between the base material and the resin is not complete.
The phenomenon of evaporating water under high temperature is repeated to accelerate edge
deterioration.
[0012]
The present invention solves the above-mentioned problems, and it is an excellent speaker edge
capable of enhancing the bonding strength between the edge substrate and the resin coated on
the edge substrate, and improving the shape retention characteristics due to the overload of the
edge itself. there is provided a manufacturing method.
[0013]
In order to solve the above problems, the present invention provides a step of subjecting the
substrate to a surface modification treatment before the resin coating step on the substrate, and
by the surface modification treatment, the substrate and the coating resin are This is a method of
manufacturing a speaker edge that can improve the familiarity.
[0014]
By this manufacturing method, the substrate can be improved in wettability by surface
modification treatment, and the compatibility between the substrate and the coating resin can be
improved, whereby the substrate can be sufficiently impregnated with the resin.
Therefore, the bonding strength between the base and the resin can be strengthened, and the
shape retention characteristics of the edge can be improved.
[0015]
In the method of manufacturing the edge for a speaker according to the present invention, the
step of subjecting the substrate to a surface modification treatment is provided prior to the step
of coating the substrate with a resin. Can improve the familiarity with
12-05-2019
4
By this manufacturing method, the wettability of the substrate is improved, the compatibility
between the substrate and the coating resin is improved, and the bonding strength is enhanced,
whereby the substrate can be sufficiently impregnated with the resin.
Therefore, by molding the resin-coated substrate in this manner, stable production can be
realized, and the shape retention characteristics of the edge can be improved.
[0016]
In addition, since the base and the coating resin conform well, peeling at the interface between
the base and the coating resin can be prevented, and the base does not absorb moisture, and the
performance of the edge is degraded. Can also be prevented. Furthermore, it is possible to
prevent the occurrence of molding defects and the like due to uneven resin coating and moisture
absorption between the resin coating process and the molding process.
[0017]
As described above, the present invention can provide an excellent speaker edge, a diaphragm, a
speaker, and an electronic device or device equipped with such a speaker capable of achieving
performance improvement, and the industrial value is extremely large. it become one.
[0018]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings.
[0019]
First Embodiment The first to ninth aspects of the present invention will be particularly described
with reference to the first embodiment.
FIG. 1 is a manufacturing process diagram showing a method of manufacturing an edge
according to an embodiment of the present invention.
12-05-2019
5
As shown in FIG. 1, a surface modification treatment step is provided in advance before the resin
coating step after the base material has been charged. This surface modification treatment step is
provided for the purpose of improving the wettability of the substrate to improve the coating
characteristics, improving the compatibility between the substrate and the coating resin, and
enhancing the bonding strength between the substrate and the coating resin. ing.
[0020]
By carrying out the surface modification treatment step by corona discharge treatment, the
substrate can be irradiated with corona discharge in the atmosphere, and a large and long-sized
substrate can be obtained without requiring a large amount of equipment. Also, surface
modification treatment can be easily and continuously performed online. Therefore, the surface
modification treatment of the edge can be implemented inexpensively.
[0021]
Further, by carrying out the corona discharge treatment using a wire electrode, it is possible to
cope with a woven fabric having an uneven surface, such as a substrate for an edge. Normal
corona discharge treatment is carried out using metal electrodes, which are suitable for
treatments with smooth material surfaces such as films and sheets, but not suitable for woven
fabrics such as edge substrates It was. Thus, by the corona discharge treatment using the wire
electrode, even if it is a woven fabric such as a substrate for an edge, it is possible to stably carry
out the surface modification treatment while improving the productivity.
[0022]
Moreover, as a material used as a base material, a cotton-based material is common. It is a
natural material, inexpensive to obtain, and environmentally friendly. However, when used as the
edge of the speaker, on the other hand, if the resin coating is not carried out sufficiently, it
absorbs moisture well and has the disadvantage of promoting the deterioration of the edge, and
in the present invention, in particular its implementation effect is large.
[0023]
12-05-2019
6
On the other hand, there is also the use of synthetic fiber-based materials, and in the case of such
synthetic fiber-based materials, the moisture absorption is smaller than in cotton-based materials,
but in many cases the compatibility with the resin to be impregnated is poor. Polyester is often
used as the synthetic fiber material. Polyester is widely used as a substitute for cotton-based
materials, and is an inexpensive and versatile synthetic fiber-based material next to cotton-based
materials. Thus, even if it is a synthetic fiber-based material, by performing surface modification
treatment, the wettability of the substrate is improved, the compatibility with the resin to be
coated becomes good, and the bonding force between the substrate and the coating resin it can
be increased. The synthetic fiber material is not limited to polyester, and can be selected
according to the required performance such as rayon and aramid, and there are many options for
weaving, such as woven fabric and knitted fabric. to.
[0024]
Furthermore, as the base material, the same effect can be obtained as a blended or twisted
material of the above-mentioned cotton-based material and the synthetic fiber-based material.
This is often used in the case where it is desired to simultaneously achieve the familiarity with
the adhesive that is an advantage of the cotton-based material and the hygroscopicity measures
that are the advantages of the synthetic fiber-based material and the measures for reducing the
F0 value.
[0025]
Also, as a method of mixing each material, methods such as blending and twisting are used
properly depending on the required application. Even in such a composite material, by carrying
out the surface modification treatment as described above, the wettability of the substrate is
improved, the compatibility with the resin to be coated becomes good, and the substrate and the
coating resin are bonded it is possible to increase the force.
[0026]
When the surface modification process described above is completed, the next step is a resin
coating process. In this step, a thermosetting resin or a thermoplastic resin is coated on the
substrate on which the surface modification treatment step is completed. Here, the resin to be
12-05-2019
7
coated uses a phenol resin. This is a particularly effective resin for normal edge molding, and has
very high performance in bonding to a substrate, moldability, and stability. And the surfacemodification process in this invention can further draw out the effect of this phenol resin.
Therefore, by improving the bondability between the base material and the phenol resin by
surface modification treatment, the moldability of the edge is further improved, the moisture
resistance of the single edge product and the speaker is improved, the F0 reduction rate of the
speaker is reduced, etc. It is possible to greatly improve the performance in terms of quality and
reliability.
[0027]
Here, the resin to be coated is not limited to the phenol resin, but a large number of options such
as melamine resin, acrylic resin, polyester resin, etc. exist, and can be variously selected
according to the required performance. is there. Also, the coating may be performed on both
sides of the substrate. By carrying out resin coating on both sides of the substrate, it is possible
to further improve its performance, quality and reliability.
[0028]
When the resin coating process described above is completed, the next step is a drying process.
Here, the base material after the resin coating process is dried by hot air. Dry to an extent that
the surface tackiness disappears. The temperature of the hot air is also not very high. Therefore,
the base material is in a prepreg state.
[0029]
When the drying step described above is completed, the next step is a molding step. Here, the
base material for which the drying process has been completed is press-formed with a mold. In
general, many molds are heated and pressed by applying a temperature. At this time, an edge
shape such as a roll shape or a corrugated portion is shaped on the base material in a prepreg
state, and the thermosetting resin is solidified and stabilized as it is. Moreover, in the case of a
thermoplastic resin, after heating a base material, the cooling press is implemented and it is
made to stabilize in an edge shape.
12-05-2019
8
[0030]
When the molding process described above is completed, the next step is a trimming process.
Here, the inside and outside diameter removal is implemented by pressing the base material for
which the forming process is completed with a mold. In this case, in particular, the punching is
carried out with the positions of the roll-shaped or wave-shaped corrugation part and the inner
and outer diameters being decentered without being decentered. When this process is completed,
individual edge single products are taken out of one sheet-like base material, and the process is
completed.
[0031]
The above manufacturing method, that is, the step of subjecting the substrate to a surface
modification treatment is provided before the resin coating step on the substrate, and the surface
modification treatment makes the substrate and the coating resin better conform to each other.
With this method, stable production of the speaker edge can be realized, and the shape retention
characteristics of the edge can be improved.
[0032]
Second Embodiment The invention according to the tenth to twelfth aspects of the present
invention will be described below with reference to a second embodiment.
FIG. 2 is a plan view and a sectional view showing an edge of an embodiment of the present
invention. 2 (a) shows a plan view of the edge, and FIG. 2 (b) shows a cross-sectional view of the
edge. FIG. 3 is a plan view and a cross-sectional view showing a diaphragm using an edge
according to an embodiment of the present invention. 3 (a) shows a plan view of the diaphragm,
and FIG. 3 (b) shows a cross-sectional view of the diaphragm. FIG. 4 is a cross-sectional view
showing a speaker using a diaphragm according to an embodiment of the present invention.
[0033]
As shown in FIG. 2, the edge 27A described in the first embodiment is manufactured by
providing a step of subjecting the substrate to a surface modification treatment prior to the step
of resin coating on the substrate in the manufacturing method thereof. It is a thing. By this
12-05-2019
9
surface modification treatment, the wettability of the substrate is improved, the compatibility
between the substrate and the coating resin is improved, and the bonding strength is enhanced,
whereby the substrate can be sufficiently impregnated with the resin. Therefore, by molding the
resin-coated substrate in this manner, stable productivity can be realized, and the shape retention
characteristics of the edge can be improved.
[0034]
In addition, since the base and the coating resin conform well, peeling at the interface between
the base and the coating resin can be prevented, and the base does not absorb moisture, and the
performance of the edge is degraded. Can also be prevented. Furthermore, it is possible to
prevent the occurrence of molding defects and the like due to uneven resin coating and moisture
absorption between the resin coating process and the molding process.
[0035]
As described above, it is possible to realize high-performance edges in terms of quality and
reliability such as shape retention characteristics, productivity, and formability.
[0036]
And about the diaphragm using this edge 27A, as shown in FIG. 3, the edge 27A demonstrated
previously is couple | bonded with the diaphragm 27 comprised from paper or resin, and is
comprised.
With this diaphragm configuration, the bonding strength between the diaphragm 27 alone and
the edge 27A can be improved, so that a diaphragm with high performance, high quality and
high reliability can be realized.
[0037]
As for the speaker using this diaphragm 27, as shown in FIG. 4, the frame 26 is formed on the
upper plate 22 of the magnetic circuit 24 configured by sandwiching the magnetized magnet 21
between the upper plate 22 and the lower plate 23. Are combined. Then, a diaphragm 27 is
12-05-2019
10
bonded to the peripheral edge of the frame 26, and a voice coil 28 for driving the diaphragm 27
is coupled to the magnetic gap 25 so as to be fitted into the magnetic gap 25 while being
centered by the damper 29. The dust cap 30 is bonded to the front of the voice coil 28 and
completed.
[0038]
With this speaker configuration, the support of the speaker's vibration system can be
strengthened by the edge 27A with good shape maintenance characteristics, and a decrease in
the F0 value of the speaker can be prevented, and a stable speaker operation can be ensured.
Furthermore, since the familiarity between the base material and the coating resin is good, the
amplitude of the diaphragm can be smoothly performed, so that the linearity of the speaker can
be improved, and the sound quality can be improved.
[0039]
As a result, the reduction in gap defects and the promotion of edge deterioration due to moisture
absorption by the edge 27A are also reduced, and high performance, high quality, and high
reliability of the speaker can be realized. In addition, it is possible to significantly improve the
performance with regard to overinput handling by the expansion of the dynamic range due to the
digitization of the input, and long-term performance guarantee in automotive applications.
[0040]
Furthermore, with regard to the adhesive strength between the frame 26 and the diaphragm 27,
the strength of the adhesive surface of the edge 27A of the diaphragm 27 with the frame 26 that
has been subjected to the surface modification can be improved. Higher quality and higher
reliability can be realized.
[0041]
Third Embodiment The third embodiment of the present invention will be described below in
detail.
12-05-2019
11
FIG. 5 is an external view of an audio mini-component system which is an electronic device
according to an embodiment of the present invention.
[0042]
As shown in FIG. 5, the speaker 40 of the present invention is incorporated in the enclosure 41
to constitute a speaker system, and an amplifier 42 which is an amplifying means of an electric
signal input to the speaker and a source to be input to this amplifier An audio mini-component
system 44, which is an electronic device, is configured to include an output player 43. With this
configuration, it is possible to realize high performance, high quality, and high reliability of an
electronic device having a wide dynamic range due to digitization of input and capable of large
output.
[0043]
Fourth Embodiment The fourth embodiment of the present invention will be described in the
following. FIG. 6 shows a cross-sectional view of an automobile 50 which is an apparatus
provided with moving means according to an embodiment of the present invention. As shown in
FIG. 6, the automobile 40 is configured by incorporating the speaker 40 of the present invention
in the rear tray.
[0044]
With this configuration, it is possible to realize high performance, high quality, and high
reliability of a device equipped with an electronic device having a wide dynamic range
accompanying the digitization of the input and capable of large output. In addition, the long-term
performance guarantee for automotive applications can also be significantly improved.
[0045]
The method for manufacturing a speaker edge according to the present invention is a speaker
edge and diaphragm used for various acoustic devices that require high performance, high input
resistance, high quality, and high reliability, and a speaker, and further, It can be applied to
applications such as various electronic devices and various devices.
12-05-2019
12
[0046]
A manufacturing process diagram showing a method of manufacturing an edge for a speaker
according to an embodiment of the present invention (a) a plan view of an edge for a speaker
according to an embodiment of the present invention, (b) for a speaker according to an
embodiment of the present invention Sectional view of edge (a) Top view of speaker diaphragm
according to one embodiment of the present invention, (b) Cross section of speaker diaphragm
according to one embodiment of the present invention Speaker according to one embodiment of
the present invention Sectional view of an external view of an electronic device according to an
embodiment of the present invention A sectional view of an apparatus according to an
embodiment of the present invention A manufacturing process diagram showing a conventional
method for manufacturing an edge for a speaker
Explanation of sign
[0047]
Reference Signs List 21 magnet 22 upper plate 23 lower plate 24 magnetic circuit 25 magnetic
gap 26 frame 27 diaphragm 27 A edge 28 voice coil 29 damper 30 dust cap 40 speaker 41
enclosure 42 amplifier 43 player 44 mini component system 50 automobile
12-05-2019
13
Документ
Категория
Без категории
Просмотров
0
Размер файла
23 Кб
Теги
jp2006041984
1/--страниц
Пожаловаться на содержимое документа