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DESCRIPTION JP2007110296

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DESCRIPTION JP2007110296
[PROBLEMS] To provide a component for a speaker device and the like configured using a
material capable of suppressing an uneven elongation amount depending on a direction when a
tensile force is applied. A component for a speaker device is formed of a circular knitted fabric
made of a yarn having elasticity. Preferably, the component for the speaker device is an edge or a
damper. In addition, it is preferable that each stitch of the circular knitted fabric be aligned in the
radial direction. Therefore, even when an audio signal corresponding to a large input is input to
the speaker device and the diaphragm or the like is largely moved, the component for the
speaker device has an uneven elongation amount depending on the direction in which the tensile
force acts. In addition, since the amount of expansion is larger than that of a general three-axis
woven fabric, no abnormal sound such as a popping sound is generated from the component for
a speaker device, and high-quality sound reproduction can be realized. [Selected figure] Figure 2
Component member for speaker device and method for manufacturing the same
[0001]
The present invention relates to a constituent material and the like of a component for a speaker
device.
[0002]
Generally, the speaker device is configured to include a magnetic circuit system including a yoke,
a magnet and a plate, and a vibration system member including a frame, a voice coil bobbin, a
voice coil, a damper, a diaphragm and an edge.
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Among the vibration system members, the edges and dampers hold the vibration system
members such as the diaphragm at appropriate positions by their elastic force, and their
vibrations according to the audio input signal output from the amplifier side. It plays a role of
linearly moving the system member up and down in the radiation direction of the sound.
[0003]
In order to output high-quality sound in a speaker device having such a configuration, a support
system member such as an edge or a damper that supports a vibration system member with
movement of a diaphragm and a voice coil bobbin is flexible. It is necessary to use a material
configuration and vibrate such vibration system members without distortion.
[0004]
Thus, for example, Patent Document 1 describes an edge for a speaker device that can solve this
type of problem.
In the edge for a speaker device described in Patent Document 1, a reinforcing member is
provided inside, the reinforcing member is formed of a material such as aromatic polyamide
fiber, cotton, polyester fiber, and the reinforcing member is plain weave. , Turtle shell knitting or
triaxial weave. With such a configuration, even when there is a large input to the speaker device,
the possibility of occurrence of unnecessary vibration such as lateral shake and a reduction in
sound quality can be reduced.
[0005]
In addition, for example, Patent Document 2 describes a center member for a speaker device
such as a damper or an edge, which can solve this type of problem. The central member for a
speaker device described in Patent Document 2 includes two sets of wefts made of polyamide
fibers, two sets of warps made of polyamide fibers and another set of two sets of warps. It is
plain-structured so that the crossing angle is 60 degrees, and is formed into a so-called triaxial
fabric. Thus, an equilateral triangular gap having an inner angle of 60 degrees is formed at the
intersection of the warp and the weft. Therefore, it is supposed that the rolling caused by the
central holding member generated when the output of the speaker device is increased is
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suppressed, and the vertical movement of the diaphragm can be always kept in the linear
movement.
[0006]
In addition, as a knitted fabric having a circular knitted structure, an elastic circular knitted fabric
(see, for example, Patent Document 3), a pattern knit (see, for example, Patent Document 4), and
a waist rest heat insulating corset (for example, Patent Document 5) See etc.).
[0007]
Patent Document 1: Japanese Patent Application Publication No. 2004-128840 Patent Document
No. 7-44155 Patent Document No. 8-9186 Patent Document No. 58-191250 Patent Document
No. 2585656
[0008]
Since the central member for a speaker device as the above-mentioned three-axis woven fabric
does not have a different amount of extension (deformation amount) depending on the direction
in which a tensile force acts as in the two-axial woven fabric, Has the advantage of being less
likely to cause a roll).
However, on the other hand, such a central member for a speaker device has a disadvantage that
the amount of expansion with respect to a tensile force is small due to its structure, and there is a
possibility that proper vertical movement of a diaphragm or the like may be hindered when the
speaker device is driven.
[0009]
As problems to be solved by the present invention, the above-mentioned ones can be mentioned
as an example.
The present invention is to provide a component for a speaker device configured using a material
capable of suppressing an uneven elongation due to a direction when a tensile force is applied, a
method of manufacturing the same, and a speaker device. It will be an issue.
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[0010]
The invention according to claim 1 is a component member for a speaker device, and is
characterized in that it is formed of a circular knitted fabric manufactured using a yarn having
elasticity.
[0011]
The invention according to claim 7 is a method of manufacturing a component for a speaker
device, which is a base manufacturing step of manufacturing a cylindrical base as a circular
knitted fabric using a yarn having elasticity, and a male type Preparing a set of molds in two and
in a female mold so that each stitch of the substrate produced by the substrate producing step is
radially aligned from the center of the substrate to the outer edge of the substrate The substrate
is fixed to any one of the male mold and the female mold, and the substrate is pressed by the
male mold and the female mold while the mold is heated to a predetermined temperature to
obtain a speaker device. And a molding step of molding the component parts.
[0012]
In one aspect of the present invention, the component for a speaker device is formed of a circular
knitted fabric manufactured using an elastic yarn.
[0013]
The above-mentioned component member for a speaker device is formed of a circular knitted
fabric manufactured using a yarn having elasticity.
Here, the “round knitted fabric” generally refers to a tubular fabric in which the respective
stitches are continuously connected in the lateral direction and spirally knitted in one direction.
[0014]
In a preferred example, the speaker device component is preferably a speaker device edge having
a substantially annular shape, or a speaker device damper having a substantially annular shape.
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The yarn may be a natural fiber such as cotton, hemp or silk, or an organic fiber such as
polyester, aramid or nylon.
Further, it is preferable that the circular knitted fabric be impregnated with a thermosetting
resin. Further, it is preferable that the respective stitches of the circular knitted fabric be aligned
in the radial direction. Here, the “radial direction” refers to the direction from the center
toward the outer edge of the speaker device component with reference to the center of the
speaker device component. Moreover, the speaker apparatus provided with said component
member for speaker apparatuses can be comprised.
[0015]
Here, as a general theory, for example, a central member for a speaker device (corresponding to
the component member for a speaker device of the present invention) formed of a two-axis
woven fabric has a tensile force from each extending direction of its warp and weft. On the other
hand, while showing a tendency to be difficult to stretch, it shows a tendency to tend to stretch
due to the tensile force in the oblique direction (see Patent Document 2 mentioned above). On
the other hand, the central member for the speaker device (corresponding to the component
member for the speaker device of the present invention) formed by the three-axis fabric is the
same as the central member for the speaker device formed by the two-axis fabric described
above. Although there is no problem that the amount of elongation varies depending on the
direction in which the tensile force acts, due to its structure, the amount of elongation due to the
tensile force is small, which may hinder proper vertical movement of the diaphragm for a
speaker device or the like.
[0016]
In this respect, since the above-described component member for a speaker device has the
above-described material configuration, by applying the component member for a speaker device
to the speaker device, the following effects can be obtained. That is, even when an audio signal
corresponding to a large input is input to the speaker device and the diaphragm for the speaker
device or the like is largely moved, the above-mentioned component member for the speaker
device has an expansion amount depending on the direction in which the tensile force acts. Since
the amount of expansion does not become uneven and also increases compared to a general
three-axis fabric, no abnormal sound such as a popping sound is generated from the component
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for a speaker device. Therefore, high-quality sound reproduction can be realized even when an
audio signal corresponding to a large input is input to the speaker device.
[0017]
In another aspect of the present invention, a method of manufacturing a component for a
speaker device includes: a base material manufacturing step of manufacturing a cylindrical base
material as a circular knitted fabric using a yarn having elasticity; a male type and a female type
Preparing a set of molds in two, and arranging the respective stitches of the substrate produced
by the substrate producing step radially aligned from the center of the substrate to the outer
edge of the substrate Material is fixed to any one of the male mold and the female mold, and
while heating the mold to a predetermined temperature, the base material is pressed by the male
mold and the female mold to constitute a speaker device component And a molding step of
molding the
[0018]
In the method of manufacturing a component for a speaker device described above, first, in the
base material preparation step, a tubular base material as a circular knit fabric is manufactured
using a yarn having elasticity.
Next, in the molding step, the male and female molds are arranged such that each stitch of the
base produced by the above base production process radially aligns from the center of the base
to the outer edge of the base The base material is pressed with a male mold and a female mold
while fixed to one of the molds and heating the mold to a predetermined temperature. Thereby,
the component for a speaker apparatus can be shape | molded. In the speaker device component
formed by such a molding method, a difference occurs in the magnitude of the tension generated
on the inner peripheral side and the tension generated on the outer peripheral side when the
speaker device is driven. Because of the different material configuration, there is no possibility of
deformation of the speaker device component.
[0019]
In one mode of the manufacturing method of the above-mentioned constituent member for
speaker devices, it has an impregnating process which impregnates the thermosetting resin to
the substrate manufactured by the substrate manufacturing process as a pre-process of the
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molding process. Thereby, it is possible to facilitate molding of the object to be molded in the
above-mentioned molding process.
[0020]
Hereinafter, preferred embodiments of the present invention will be described with reference to
the drawings.
[0021]
[Configuration of Speaker Device] FIG. 1 is a cross-sectional view of the speaker device 100
including the component member for a speaker device of the present invention, taken along a
plane passing through the central axis L1.
[0022]
As shown in FIG. 1, the speaker device 100 mainly includes a magnetic circuit 70 including a
yoke 1, a magnet 2 and a plate 3, a voice coil bobbin 4, a voice coil 5, a frame 6, a damper 7, a
diaphragm 8, an edge 9, A vibration system member 71 including the center cap 10 (hereinafter,
also referred to as a “component member for a speaker device”) is provided.
In the present invention, the configuration and driving method of the speaker device, and the
shape, position, size, and the like of the components for the speaker device are not limited to the
configuration and the like described below.
[0023]
First, the configuration of the magnetic circuit 70 will be described.
[0024]
The magnetic circuit 70 is configured as an external magnet type magnetic circuit.
The yoke 1 has a columnar pole portion 1a and a flange portion 1b extending outward from the
lower end portion of the outer peripheral wall of the pole portion 1a.
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The magnet 2 has an annular shape and is mounted on the flange portion 1 b. The plate 3 has an
annular shape and is mounted on the magnet 2. The magnetic flux of the magnet 2 is
concentrated in the air gap (magnetic gap 11) formed between the outer peripheral wall of the
pole portion 1a which is an element of the yoke 1 and the inner peripheral wall of the plate 3.
[0025]
Next, the configuration of the vibration system member 71 will be described.
[0026]
The voice coil bobbin 4 has a cylindrical shape, and is provided at a position covering the vicinity
of the upper end portion of the outer peripheral wall of the pole portion 1 a which is an element
of the yoke 1.
[0027]
The voice coil 5 is formed of one wire, has positive and negative lead wires (not shown), and is
wound around the lower end of the outer peripheral wall of the voice coil bobbin 4.
The lead wire on the positive side is an input wiring of the L (or R) channel signal, and the lead
wire on the negative side is an input wiring of the ground (GND: ground) signal.
Each positive and negative lead wire is connected to one end side of each tinsel wire 12, and the
other end side of each tinsel wire 12 is a terminal portion provided on the second step 6b of the
frame 6 described later. Connected to 13. The terminal portion 13 is also connected to the output
wiring 14 on the amplifier side. As a result, signals and power for one channel are input to the
voice coil 5 from the amplifier side through the terminal portion 13, the tinsel wires 12, and the
plus and minus lead wires.
[0028]
The frame 6 has a substantially cup-like shape and a step-like cross-sectional shape, and has a
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function of supporting various components of the speaker device 100. The frame 6 has a first
step 6a at its lower position, a second step 6b at its center position, and a third step 6c at its
upper position. The first step 6 a is mounted on the plate 3.
[0029]
The damper 7 has an annular shape and elastically supports the voice coil bobbin 4 and the like.
The inner peripheral edge portion of the damper 7 is attached in the vicinity of the upper end
portion of the outer peripheral wall of the voice coil bobbin 4, while the outer peripheral edge
portion of the damper 7 is attached on the second stepped portion 6 b of the frame 6.
[0030]
The diaphragm 8 has a cone shape and has a function of emitting an acoustic wave according to
an input signal. The inner peripheral edge portion of the diaphragm 8 is attached to the upper
end portion of the outer peripheral wall of the voice coil bobbin 4 and above the damper 7.
[0031]
The edge 9 has an annular planar shape and an Ω-like cross-sectional shape, has a function of
absorbing unnecessary vibration generated in the speaker device 100 and elastically supporting
the diaphragm 8 with the voice coil bobbin 4. The inner peripheral edge of the edge 9 is attached
to the outer peripheral edge of the diaphragm 8, while the outer peripheral edge of the edge 9 is
attached on the third step 6 c of the frame 6.
[0032]
The center cap 10 has a hemispherical shape, and has a function of preventing dust, moisture,
and the like from intruding into the inside of the speaker device 100. The center cap 10 is
disposed at a position covering the upper surface side of the voice coil bobbin 4, and is attached
to the upper end portion of the outer peripheral wall of the voice coil bobbin 4.
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[0033]
In the speaker device 100 having the above configuration, the electric signal output from the
output wiring 14 on the amplifier side is sent to the voice coil 5 through the terminal portion 13,
each tinsel wire 12, and the positive and negative lead wires of the voice coil 5. Supplied. As a
result, a driving force is generated in the voice coil 5 in the magnetic gap 11, and the diaphragm
8 is vibrated in the direction of the central axis L 1 of the speaker device 100. Thus, the speaker
device 100 emits a sound wave in the direction of the arrow Y1.
[0034]
[Material Configuration of Component for Speaker Device] The embodiment according to the
present invention is characterized in the material configuration of the component for speaker
device. Here, as a component member for a speaker device to which the present embodiment is
suitably applied, for example, an edge 9 and a damper 7 may be mentioned. However, the
component member for a speaker device to which the present invention is applied is not limited
to only the edge 9 and the damper 7.
[0035]
First, the configuration of the edge 9 will be described in detail with reference to FIG. FIG. 2A
shows a plan view of the edge 9 when the edge 9 is observed in the direction opposite to the
direction of the arrow Y1 in FIG. The black points shown in FIG. 2A indicate the center O of the
edge 9. FIG. 2 (b) is a cross-sectional view taken along the cutting line A-A 'in FIG. 2 (a), and in
particular, a cross-sectional view of the edge 9 cut at a position passing through the center O of
the edge 9.
[0036]
The edge 9 has an annular planar shape, and has an outer peripheral portion 9a on the outer
side, an inner peripheral portion 9c on the inner side, and an elastic portion 9b between the
outer peripheral portion 9a and the inner peripheral portion 9c. The inner circumferential
portion 9 c of the edge 9 is attached to the outer peripheral edge of the diaphragm 8, and the
outer circumferential portion 9 a of the edge 9 is attached on the third step 6 c of the frame 6.
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The elastic portion 9 b has a substantially Ω-shaped cross section, and mainly has a function of
elastically and movably supporting the diaphragm 8 in the direction of the central axis L 1 of the
speaker device 100.
[0037]
Next, the configuration of the damper 7 will be described in detail with reference to FIG. FIG. 3A
shows a plan view of the damper 7 when the damper 7 is observed in the direction opposite to
the direction of the arrow Y1 in FIG. The black points shown in FIG. 3A indicate the center O of
the damper 7. FIG. 3 (b) is a cross-sectional view taken along the cutting line B-B 'in FIG. 3 (a),
and in particular a cross-sectional view of the damper 7 taken at a position passing through the
center O of the damper 7.
[0038]
The damper 7 has an annular planar shape, and has an outer peripheral portion 7a on the outer
side, an inner peripheral portion 7c on the inner side, and an elastic portion 7b between the
outer peripheral portion 7a and the inner peripheral portion 7c. The inner circumferential
portion 7 c of the damper 7 is attached at a position near the upper end of the outer
circumferential wall of the voice coil bobbin 4, and the outer circumferential portion 7 a of the
damper 7 is attached on the second step 6 b of the frame 6. The elastic portion 7b has a crosssectional shape in which a plurality of corrugations are continuously connected, and mainly
functions to elastically and movably support the voice coil bobbin 4 and the like in the direction
of the central axis L1 of the speaker device 100. Have.
[0039]
The edge 9 and the damper 7 having the above configurations are elastic yarns, for example,
yarns made of natural fibers such as cotton, hemp, silk or yarns made of organic fibers such as
polyester, aramid, nylon, etc. Using a well-known circular knitting machine to form a circular
knitted fabric, and further molded into the above-described shape by a heating press or the like.
Here, the “round knitted fabric” generally refers to a tubular fabric in which the respective
stitches are continuously connected in the lateral direction and spirally knitted in one direction.
In a preferred example, it is preferable that the circular knit fabric constituting the edge 9 or the
damper 7 be impregnated with a thermosetting resin such as a phenol resin (not shown). FIG. 4 is
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an enlarged partial plan view showing a part of the edge 9 in FIG. 2A (corresponding to the
broken line area E1) or a part of the damper 7 in FIG. 3A (corresponding to the broken line area
E2). It is.
[0040]
As shown in FIG. 4, each stitch 50 of the circular knitted fabric constituting the edge 9 or the
damper 7 is formed in a substantially circular shape, and each mesh 50 is shown in FIG. Aligned
in radial direction in a). The broken line area E10 of FIG. 4 shows that a group of stitches 50 are
aligned in the radial direction (the direction of the arrow Y12 in FIG. 2A or FIG. 3A). Here, the
“radial direction” refers to a direction from the center O toward the edge 9 or the outer
peripheral portion 9 a or 7 a of the damper 7 based on the center O of the edge 9 or the damper
7.
[0041]
Next, with reference to FIG.5 and FIG.6 etc., the effect peculiar to the Example of this invention
compared with a comparative example is demonstrated.
[0042]
FIG. 5A shows a plan view of an edge 90 according to the comparative example.
FIG. 5B is a partial plan view showing a part of the edge 90 in FIG. 5A (corresponding to the
broken line area E3) in an enlarged manner. FIG. 6 is a graph showing the relationship between
tensile stress (MPa) at the edge 90 according to the comparative example and the edge 9
according to the present example, and the amount of elongation {displacement (mm)}. In FIG. 6, a
graph Gr1 shows a graph according to the present embodiment, and a graph Gr2 shows a graph
according to a comparative example.
[0043]
First, the configuration of the edge 90 according to the comparative example and the problems
thereof will be briefly described.
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[0044]
The edge 90 has the same shape and function as the present embodiment, and has an outer
peripheral portion 90a on the outer side, an inner peripheral portion 90c on the inner side, and
an elastic portion 90b between the outer peripheral portion 90a and the inner peripheral portion
90c. .
The edge 90 is formed into a plain weave fabric as a so-called biaxial fabric by using a warp yarn
91 and a weft yarn 92, and is further molded into the above-described shape by a heating press
or the like. For this reason, a stitch 93 having a rectangular shape is formed at an intersection
position of an arbitrary adjacent warp 91 and an arbitrary adjacent weft 92.
[0045]
Since the comparative example which has such a raw material structure is formed in the plain
weave fabric as a biaxial fabric, in FIG.5 (b), the extension direction (arrow Y12) of the warp 91
and the extension direction of the weft 92 ( While showing a tendency to be difficult to stretch
with respect to the pulling force to the arrow Y10), it shows a tendency to easily stretch with
respect to a pulling force in the oblique direction (arrow Y11 or arrow Y13 direction etc).
[0046]
This point will be described in more detail with reference to FIG.
The lengths of the arrow Y10, the arrow Y11, the arrow Y12, the arrow Y13, etc. shown in FIG.
5A are the amount of elongation (the amount of deformation) of the edge 90 when a tensile force
is applied at the position of each arrow. Is shown.
[0047]
In the edge 90 according to the comparative example, when a uniform tensile force acts in the
radial direction, the position in the extending direction (arrow Y12 direction or arrow Y10
direction) of the warp yarn 91 or weft 92 is planarly When viewed, it tends to be difficult to
stretch at the positions corresponding to 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock in the
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clockwise direction, while a position not extending the warp yarn 91 or weft 92, ie from 12
o'clock in the clockwise direction Position corresponding to 3 o'clock, position corresponding to
3 o'clock to 6 o'clock in the clockwise direction, and position corresponding to 6 o'clock to 9
o'clock in the clockwise direction, and 9 o'clock to 12 o'clock in the clockwise direction Each
position shows a tendency to stretch. Among them, the elongation amount is the largest
particularly at positions where the angles formed by the warp yarn 91 and the weft yarns are 45
degrees, 135 degrees, 225 degrees and 315 degrees (positions corresponding to the arrow Y11
direction or the arrow Y13 direction). That is, in the edge 90 according to the comparative
example, the amount of elongation becomes uneven depending on the direction in which the
tensile force acts.
[0048]
Therefore, applying the edge 90 having such a material configuration to the speaker device
causes the following problems. That is, when an audio signal corresponding to a large input is
input to the speaker device and the diaphragm or the like is largely moved, in the comparative
example, the amount of expansion (amount of deformation) by the tensile force at each position
on the circumference of the edge 90 As shown in the graph Gr2 of FIG. 6, there is a problem that
an abnormal sound such as a so-called “tipped noise” is produced from the edge 90 in the
vicinity of the broken line area E4.
[0049]
On the other hand, the edge 9 according to the embodiment of the present invention is formed
into a circular knitted fabric using the above-described elastic yarn, and each stitch 50 of the
circular knitted fabric is formed into a substantially circular shape. And each mesh 50 is aligned
in the radial direction of the edge 9.
[0050]
As shown in FIG. 2A, in the edge 9 according to the present embodiment, when a uniform tensile
force is applied in the radial direction, such a material configuration allows each edge on the
circumference of the edge 9 to be located. The amount of elongation becomes uniform, and the
amount of elongation becomes larger compared to the above-described triaxial woven fabric and
the comparative example.
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Here, the lengths of the arrow Y10, the arrow Y11, the arrow Y12, the arrow Y13, etc. shown in
FIG. 2A are the amount of extension of the edge 9 when a tensile force is applied at the position
of each arrow (FIG. Amount of deformation) is shown.
[0051]
Therefore, by applying the edge 9 having such a material configuration to the speaker device
100, the following effects can be obtained. That is, even when an audio signal corresponding to a
large input is input to the speaker device 100 and the diaphragm 8 or the like is largely moved,
the amount of expansion of the edge 9 becomes uneven due to the direction in which the tensile
force acts. (In other words, the amount of elongation at each position on the circumference of the
edge 9 becomes uniform), and as shown in the graph Gr1 of FIG. As in the comparative example
and the like, there is no case where an abnormal sound such as a popping sound is generated
from the edge 9. Therefore, even when an audio signal corresponding to a large input is input to
the speaker device 100, high-quality sound reproduction can be realized. Further, the damper 7
according to the present embodiment also has the same material configuration as the edge 9
according to the above-described present embodiment, and therefore, the same effects and
advantages as those of the edge 9 can be obtained.
[0052]
[Method of Manufacturing Component for Speaker Device] Next, a method of manufacturing the
component for speaker device according to the embodiment of the present invention will be
described with reference to FIGS. 7 to 10 and the like.
[0053]
FIG. 7 is a flowchart showing a method of manufacturing a component for a speaker device
according to an embodiment of the present invention.
8 to 10 show process drawings corresponding to the respective manufacturing steps in FIG.
[0054]
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First, a base material made of a cylindrical circular knitted fabric is produced (step S1).
Specifically, in FIG. 8 (a), the first knitting yarn 80a and the second knitting yarn 80b having
elasticity made of natural fibers such as cotton, hemp and silk, or organic such as polyester,
aramid and nylon The first knitting yarn 80a and the second knitting yarn 80b having elasticity
made of a base fiber are supplied to a known circular knitting machine (not shown), and the first
knitting yarn 80a and the first knitting yarn 80a are The knitting (see the broken line area E5) is
performed so that each mesh 80c of the two knitting yarns 80b becomes helical. Thereby, the
base material 80 which consists of cylindrical circular knitting cloth is produced.
[0055]
Next, as shown in FIG. 8 (b), a thermosetting resin 85 such as a phenol resin is impregnated into
a base material 80 made of a cylindrical circular knitted fabric by a known method (step S2).
Thereby, it is possible to facilitate molding of the object to be molded in the later-described
molding process. Next, as shown in FIG. 9A, the base material 80 impregnated with the
thermosetting resin 85 is cut into a desired shape (step S3).
[0056]
Next, the base material 80 is molded into a predetermined shape (step S4). Specifically, first, as
shown in FIG. 9 (b), a pair of mold 95 is prepared by two molds, a female mold 95a and a male
mold 95b, for molding components for a speaker device, It installs in the heating type press
device which is not illustrated. The mold 95 according to this example is a mold for molding the
edge 9. Therefore, in order to form the damper 7, it is necessary to prepare a mold for forming
the damper 7. Subsequently, in FIG. 10A, each mesh 80 c of the base material 80 impregnated
with the thermosetting resin 85 is radially aligned from the center O of the base material 80 to
the outer edge 80 x of the base material 80 ( That is, the substrate 80 is fixed so as to cover the
male mold 95 b so as to align in the direction of the arrow in the drawing). Subsequently, as
shown by arrow Y20 in FIG. 10B, using the female mold 95a and the male mold 95b heated to a
predetermined temperature, the base material 80 is moved while moving the female mold 95a to
the male mold 95b side. Clamp (press). These series of operations are performed by the abovedescribed heating press. At this time, in the present invention, the base material 80 may be fixed
so as to cover not the male mold 95 b but the female mold 95 a.
[0057]
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In this way, components for a speaker device such as the edge 9 and the damper 7 according to
the embodiment of the present invention shown in FIGS. 2 and 3 can be molded. In the
components for the speaker device such as the edge 9 and the damper 7 formed by the above
molding method, the difference in magnitude between the tension generated on the inner
peripheral side and the tension generated on the outer peripheral side when the speaker device
100 is driven Although this occurs, even in this case, since the above-described material
configuration is provided, the component for the speaker device is not deformed.
[0058]
[Modifications] In the above embodiment, the speaker device constituent member of the present
invention is applied to the external magnet type speaker device, but the present invention is not
limited to this, and the present invention is not limited to this. The component member for a
speaker device of the invention may be applied.
[0059]
FIG. 1 shows a cross-sectional view of a speaker device including the speaker device component
of the present invention.
The top view and sectional drawing of the edge which concern on a present Example are shown.
The top view and sectional drawing of the damper which concern on a present Example are
shown. It is a top view which expands and shows a part of edge or damper which concerns on a
present Example. The top view and sectional drawing of the edge concerning a comparative
example are shown. It is a graph which shows the relationship of the stress and deformation
amount in the edge which concerns on a present Example, and the edge which concerns on a
comparative example. The flowchart of the manufacturing method of the structural member for
speaker apparatuses which concerns on a present Example is shown. It is process drawing which
shows the manufacturing process of the structural member for speaker apparatuses which
concerns on a present Example. It is process drawing which shows the manufacturing process of
the structural member for speaker apparatuses which concerns on a present Example. It is
process drawing which shows the manufacturing process of the structural member for speaker
apparatuses which concerns on a present Example.
Explanation of sign
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[0060]
7 damper 9 edge 70 magnetic circuit 71 vibration system member 100 speaker device
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