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DESCRIPTION JPH10327496

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DESCRIPTION JPH10327496
[0001]
The present invention relates to a method of manufacturing a suspension device for a speaker
and a suspension device for a speaker, and more particularly, to a method of manufacturing a
suspension device for a speaker capable of improving the state of a signal input end of a voice
coil connection conductor The present invention relates to a suspension device for a speaker.
[0002]
2. Description of the Related Art FIGS. 8 to 16 relate to the prior art, and for the purpose of
reducing the number of wiring steps of a speaker, the conductor 2 is mounted in a form along a
corrugation 11c of a suspension 1 generally referred to as a spider or damper. Damper
(hereinafter referred to as a conductive damper 1D). ) Have been proposed in the past, but these
conductive dampers 1D have poor practicability, and lastly for the first time we can withstand
practical use, a conductive wire formed by winding a copper wire foil around a conductor 2,
commonly known as A conductive wire referred to as a twill wire is referred to as a flat braided
conductive wire (hereinafter referred to as a flat knitting twill wire 2h) in an arbitrary number. )
And sew the flat knitting tinsel wire 2h to a base fabric B made of a woven fabric or the like
constituting the suspension 1, heat-pressure mold the sewn base material B, and follow the
corrugation 11c. A conductive damper 1D (hereinafter, referred to as a sewn conductive damper
1Ds) in which the conductor 2 is mounted in a state. ) Has already been mass-produced and put
to practical use. Further, an edge to which the technology is applied (hereinafter, referred to as a
conductive edge 1E). Is well known that has already been proposed.
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[0003]
Hereinafter, the conductive conductive damper 1Ds, the conductive edge 1E, etc., that is, the
suspension 1 of the speaker and the corrugation 11c of the suspension 1 or the suspension 11
mounted with the conductor 2 along the roll 11r etc. It says "Suspension 1".
[0004]
The structure of the conductive suspension 1 to which the conductor 2 is attached in a state
along the corrugation 11c, the roll 11r, etc. of a conventional general speaker suspension will be
described with the example of the conductive damper 1D and the conductive edge 1E.
First, in the case of the conductive damper 1D, for example, in the case of the sewn conductive
damper 1Ds which has already been put into practical use, a phenolic resin stock solution of a
general commercial product is first diluted with methanol as a solvent and the specific gravity is
set to an arbitrary value. A solution is obtained, and the solution is dipped in a cloth made of
cotton or chemical fiber to impregnate or coat a phenol resin, and then the methanol solvent is
volatilized to remove resin tackiness and then cut into a predetermined width. A base cloth B for
damper molding is produced.
[0005]
Furthermore, as the conductive material 2 of the base fabric B, a flat knitting tinsel wire 2h may
be provided parallel to the center line of the base fabric B or two parallel to the center line
generally at a predetermined interval as shown in FIG. The base fabric B after being sewn with
the thread 3 for sewing, which is referred to as sewn, and further sewed with the flat knitting
tinsel wire 2h, is heated similarly to a general damper based on the center line of the base fabric
B As shown in FIG. 9, the corrugation 11c is integrally molded as shown in FIG. 9, and the
unnecessary part shown by the broken line in FIG. 10 is trimmed to cut out with unnecessary
pressing, as shown in the perspective view of FIG. A sewed electrically conductive damper 1D is
obtained in which the flat knitting tinsel wire 2h is mounted along the corrugation 11c.
[0006]
In addition, the production of the conductive edge 1E, for example, the sewn conductive edge 1Es
(reference: FIG. 3 of the embodiment of the present invention) which has already been put into
practical use is basically the same as the production of the sewn conductive damper 1Ds. A
predetermined woven fabric is impregnated with a predetermined concentration of phenol resin
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or the like, and an edge material coated with a predetermined damping material or the like made
of synthetic rubber or the like is cut into a predetermined width to form a base fabric B for edge
molding; On the cloth B, as the conductive material 2, a flat knitting tinsel wire 2h similar to that
described above is sewn in parallel with the center line of the base cloth B or two at a
predetermined interval with Conex thread 3 or the like.
[0007]
Further, the base fabric B after being sewn with the flat knitting tinsel wire 2h is subjected to
forming processing by heat press in the same manner as general edge forming based on the
center line of the base fabric B to integrally form the rolls 11r etc. Apply a trimming process to
remove unnecessary parts.
In general, as in the above, when the unnecessary portion is removed by a press and cut out, a
sewn conductive edge 1Es is obtained in which the flat braided tinsel wire 2h is mounted along
the roll 11r.
[0008]
That is, since the structure of the conventional conductive suspension 1 for a speaker is
manufactured by the manufacturing method as described above, the conductive material 2
consisting of the flat braided filament wire 2h is naturally impregnated or coated with a resin etc.
It has a structure disposed on the surface side of a suspension base B made of woven fabric or
the like.
Therefore, only one side of the conductive material 2, that is, one of the flat braided tinsel cords
2h is exposed to the front side of the base material B, and the other is in close contact with the
suspension base material B and is hidden.
[0009]
Therefore, means for performing connection wiring between the conductive member 2 and the
input terminal lug 4 will be described in the example of the sewn conductive damper 1Ds, as
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shown in FIG. 11, provided on the outer peripheral portion of the sewn conductive damper 1Ds.
The tongue-like convex portions (hereinafter referred to as tongue sides 13a and 13b) extend
outside the portion covered by the conductive material 2 of the bonding margin 12, that is, the
stitched flat knitting tinsel wire 2h. And the ends 2ha and 2hb of the flat knitting tinsel wire 2h
extend on the tongue portions 13a and 13b.
[0010]
Furthermore, in order to attach the sewing conductive damper 1Ds to the speaker frame F and
perform connection wiring, the tongue side portions 13a and 13b are disposed on the input
terminals attached to the speaker frame F as shown in FIG. The surfaces of the end portions 2ha
and 2hb of the flat braided tinsel wire 2h extending to the side portions 13a and 13b are brought
into contact or pressure contact with part of the terminal lugs 4a and 4b, and further the
soldered portions of the lugs 4a and 4b are soldered Connection wiring is done by doing. That is,
a part of the terminal lugs 4a and 4b is always in contact with the surface side of the conductive
material 2 (the flat braided tinsel wire ends 2ha and 2hb).
[0011]
The conductor 2 in the sewn conductive damper 1Ds, that is, the flat braided tinsel wire ends 2ha
and 2hb are separated from the damper base material B, and both the front and back sides of the
plain braided tinsel ends 2ha and 2hb are separated. Proposed figure of sewn conductive damper
1Ds proposed in the beginning by a wiring structure in which both the end portions 2ha and 2hb
are jumped to connect and wire the input terminal lug 4 in a state of being exposed together
(Japanese Patent Laid-Open No. 2-134100) (Japanese Utility Model Laid-Open Publication No. 213392) has already been described.
[0012]
However, in order to make the wiring structure in practice, the flat braided tinsel wire ends 2ha
and 2hb sewn onto the tongue sides 13a and 13b provided with the damper outer peripheral
part and the tongue sides 13a and 13b as described above. As shown in FIG. 13, the sewing
thread 3 of the part is unstitched from the outermost end side of the tongue parts 13a and 13b
to the vicinity of the outermost part of the bonding margin 12 and is further unsealed The flat
knitting tin thread wire ends 2ha and 2hb are peeled off from the portions 13a and 13b, and the
tongue side portions 13a and 13b and the unwound yarn 3 are cut, and the front and back sides
of the plain knitting tin thread end 2ha and 2hb Both of the two surfaces are exposed, and the
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damper base material B (the tongue portions 13a and 13b) is not interposed. However, the
method is 1) expensive.
2) The quality is not stable. There is a disadvantage of
[0013]
If the method 1) is described, the method naturally requires a work process to unscrew the
sewing thread 3, and since the work is extremely complicated manually, the work man-hours
greatly increase. It becomes expensive. 2) When the item is described, the work of unraveling the
sewn yarn 3 varies, so the sewed yarn 3 is released too much, and the unraveled part reaches
near the end of the corrugation 11c, not near the outermost end of the corrugation 11c. The
sewed part occurs.
[0014]
When the sewing conductive damper 1Ds in which the unstitched portion is generated in the
corrugation 11c is brought into the actual operation state, the corrugation 11c portion is a
movable portion, so it naturally oscillates and is a flat braided tinsel arranged in the corrugation
portion When the line 2h contacts the damper base material B, an abnormal sound, so-called
rattling noise, etc. is generated, and when the state is extended for a long time, the tinsel wire
copper foil constituting the plain knitted tinsel wire 2h of the unstitched portion is cut. This is a
fatal defect for speakers with no output.
[0015]
In addition, even if the loosened portion of the sewing thread 3 does not reach the outermost end
of the corrugation 11c, the end portion of the sewn thread 3 is loosened by vibration, impact or
the like during transportation of the damper, and the loosened portion Often reach the outermost
end of the corrugation 11c.
From the above reasons, the method of separating the conductive material 2 (flat knitting tinsel
wire 2h) of the sewn conductive damper 1Ds and producing a portion not intervened in the
damper base material B (the tongue portions 13a and 13b) has been realized to date. Not.
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[0016]
However, as described above, the conductive material 2 is separated, and portions of the damper
not intervened in the base material B, that is, both the front surface side and the rear surface side
of the end 2ha and 2hb of the flat knitting tinsel wire 2h etc. In some cases, it may be
advantageous not to be attached to the woven fabric (tongue 13a, 13b) or the like that is the
base material B of the sewing conductive damper 1Da. For example, the case where the
conductive damper 1D is used for the terminal ring L or the like provided with the conductive
pattern P for wiring proposed last time may be mentioned.
[0017]
That is, in the sewn conductive damper 1Da (FIG. 12) with the conductor 2 applied to the tongue
side portions 13a and 13b as described above, the conductive material end portions 2ha and 2hb
of the flat braided tinsel wire 2h and the like attached Since the woven fabric (the tongue
portions 13a, 13b, etc.) serving as the suspension base B intervenes on the contact surface
between the first and second conductive patterns P for wiring (FIG. 14), connection wiring by
soldering is almost impossible. Therefore, to enable soldering we have used a special conductive
damper 1D, which is referred to as a woven conductive damper 1Di.
[0018]
Describing the details, the ring L prepared by press punching or the like of a printed circuit
board or the like obtained by sticking a copper foil or the like on a resin plate, as shown in FIG.
Provide parts L1, L2 and L3, place one convex part L1 at the terminal attachment part, and
arrange the other two convex parts L2 and L3 at 180 ° distributed positions on the center line,
and further paste conductive damper 1D A patterned terminal ring L provided with a wiring
pattern P on the side to be attached is obtained, and further, an angular hole L11 for attaching
the terminal lug 4 is provided in the tongue side convex portion L1 for attaching the input
terminal as shown in FIG. After the crimped portion 41 of the terminal lug 4 is inserted into the
hole L11, crimping is performed to complete the ring L with the terminal lug 4 in which a part of
the terminal lug 4 is pressure-welded to the surface of the wiring pattern P.
[0019]
Further, the damper impregnates the fibers constituting the woven fabric B with a phenol resin of
a predetermined concentration diluted with methanol, evaporates the solvent to remove the
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tackiness, then warps the resin-impregnated fiber, and does not impregnate the resin. A woven
fabric B is prepared which is used as a weft yarn and one plain weave yarn wire line 2h is woven
on the weft side, and the fabric B is heated and pressed so that the plain weave yarn wire line 2h
is disposed on the center line of the damper corrugation 11c. A molded woven conductive
damper 1Di is obtained.
[0020]
Since the damper inner diameter portion 13 (FIG. 11) is cut in the trimming step, the flat braided
tinsel wire 2h disposed on the damper centerline is also severed, and a total of two flat braided
tinsel wires 2h are disposed on the damper centerline In the trimming step, as shown in FIG. 14,
two tongue portions 13a and 13b are provided on the outside of the bonding margin 12
provided on the outer periphery of the damper, and the tongue portions 13a and 13b are flat
yarn tinsel wire ends It has a structure that spans 2 ha and 2 hb.
Since the woven conductive damper 1Di has a structure in which the flat braided yarn thread 2h
is woven in the woven fabric, the copper foil of the flat braided yarn thread 2h which is the
conductive material 2 forms between the fibers constituting the woven fabric (texture) The
structure is exposed.
[0021]
Further, as shown in FIG. 14, after applying a predetermined amount of rubber-based adhesive h
to the inner peripheral portion of the terminal ring L and drying for a predetermined time to
volatilize the solvent of the adhesive h, a predetermined pattern P of the convex portions L2 and
L3 is formed. After applying cream solder sc (FIG. 15) to the position, that is, the place where the
end of the flat knitting tinsel wire 2h of the woven conductive damper 1Di extends, the bonding
margin 12 of the damper and the outer peripheral portion of the ring L with terminals, the
tongue of the damper When the side portions 13a and 13b and the ring convex portions L2 and
L3 are disposed in combination, a plain weave covering the bonding margin portion 12 of the
woven conductive damper 1Di and the adhesive h applied portion and further the convex portion
of the woven conductive damper 1Di The exposed portion of the back surface of the tinsel wire 2
h comes in contact with the cream solder sc.
[0022]
In this state, the adhesive h is thermally reactivated for several seconds at about 250 ° C. for
several seconds from the upper part of the bonding margin 12 of the damper 1Di and the tongue
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sides 13a and 13b to thermally reactivate the adhesive h to bond the bonding margin 12 of the
conductive damper 1Di. While bonding the terminal ring L together, simultaneously melt the
cream solder sc, and expose the exposed portion of the back surface of the flat braided twine
wire end portion 2ha, 2hb which extends to the tongue side portions 13a, 13b of the woven
conductive damper 1Di and the ring L A terminal lug 4 to which the provided wiring pattern P is
soldered, and a ring L with a woven conductive damper 1Di (see FIG. 15) are obtained.
[0023]
The woven conductive damper 1Di does not have a phenol resin or the like attached to the flat
knitting tinsel wire 2h which is the conductive material 2 at the time of heat and pressure
molding, and the copper foil constituting the plain knitting tinsel wire 2h from the interstices of
the woven fabric B is Further, since the exposed portion is in contact with the wiring conductive
pattern P of the ring L, it can be easily soldered.
However, since it is difficult to use the usual sewn conductive damper 1Ds, that is, the sewn
conductive damper 1Ds while the conductor 2 (the flat knitting tin thread wire end 2ha, 2hb) is
applied to the tongue sides 13a and 13b, The type of the conductive damper 1D is limited, and
the use range of the ring L provided with the wiring conductive pattern P is narrowed.
[0024]
It is necessary to correspond to the defect that the conductive material 2, that is, the flat braided
tinsel wire ends 2ha and 2hb of the copper foil is not intentionally disposed in the woven fabric
etc. which is the base material B of the sewn conductive damper 1Da. .
Therefore, in order to separate the flat knitting tinsel wire end portions 2ha and 2hb extending to
the tongue side portions 13a and 13b as described above, the sewing thread 3 is released in the
same manner as described above, and the flat knitting tinsel yarn is separated from the tongue
side portions 13a and 13b. The line 2h was peeled off, and the tongues 13a and 13b and the
unwound yarn 3 were cut to prevent the substrate B from being intervened. Although it may be
possible in some cases to cope within the range of total man-hours in preparation, the defect of
the item 2), which is a particularly serious defect, could not be completely solved.
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[0025]
In other words, the end portion of the sewing thread 3 of the ordinary sewing conductive damper
1D1s, that is, the outer peripheral portion of the sticking margin portion 12 or the thread 3
extending to the outermost side of the tongue side, Since it is closely adhered to the flat knitting
tinsel wire 2h and the woven fabric B which is a damper base material by heat press depending
on time, and is subjected to heat forming processing, it has a nature of maintaining a closely
adhered form as a matter of course .
Moreover, the sewn yarn 3 on the side of the base material B is in a semi-fixed state by the
phenol impregnated in the woven fabric, and no unnecessary force is applied to the sewn yarn 3
extending to the outermost side. As long as it does not loose and does not start to melt.
[0026]
However, once the tightly-formed sewing thread 3 begins to be forcibly released, it naturally
breaks the closely-formed and semi-fixed state of the sewing thread 3, and the end of the sewing
thread 3 The part is loosened and the seizing force is lost, and furthermore, the unstitched part
of the flat knitting tinsel wire 2h extends to the vicinity of the middle of the sticking margin part
12 and the sewing thread 3 is stuck If it is cut at the outer periphery of the rib 12, the fine
external force applied to the flat knitting tinsel wire ends 2ha and 2hb, especially the most sewn
yarn 3 by the minute force applied during transportation, is the corrugation 11c of the outermost
periphery It turned out that it could be solved to the neighborhood.
[0027]
Next, in the case where it is preferable that the exposed portions of the flat braided tinsel wire
end portions 2ha and 2hb as the conductive edge 1E and the conductor 2 are intentionally not
attached to the woven fabric as the base material B of the edge. An example is described in FIG.
For example, flat yarn / twin wire end portions 2ha and 2hb must be arranged on the back side
of the edge 1E. In such a case, in order to connect and wire the flat knitting tin thread end
portions 2ha and 2hb to the input terminal lugs 4, the tongue side portions 13a and 13b are
provided as in the conventional example, and the flat knitting tin thread end portions 2ha, 2hb is
disposed on the input terminal lug 4 and the base material B of the edge is in contact with the
flat knitting tinsel wire ends 2ha and 2hb and the terminal lug 4 as shown in FIG. The entire
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terminal lug 4 is covered.
[0028]
Therefore, it is easy to bring the flat knitting tin thread wire ends 2ha and 2hb and the terminal
lug 4 into contact with each other, but a stable contact state, that is, the flat knitting tin thread
end 2ha and 2hb and the terminal lug 4 It is defined as applying pressure and fixing. In the state
in which the edge base material B, which is a good insulating material, is very difficult to
maintain the above-mentioned condition and covers the flat braided tinsel wire ends 2ha and 2hb
as shown in FIG. Not only is reliable soldering difficult, but also the soldering itself is extremely
difficult.
[0029]
As the countermeasure described above, the flat knitting tinsel wire ends 2ha and 2hb extending
over the tongue side portions 13a and 13b as the edge base material B as described above are
separated, the sewn yarn 3 is released, and the tongue side portion 13a, Even if the flat knitting
tin thread wire ends 2ha and 2hb are peeled off from the thread 13b and the tongue sides 13a
and 13b are further cut and no base material B is interposed, the thread 3 is sewn to the roll 11r
as described above. There is a disadvantage that unraveled portions and unstitched portions
occur.
[0030]
Furthermore, tongue side portions 13a and 13b are provided at the places where the flat knitting
tin thread line end portions 2ha and 2hb extend outside the bonding margin portion 12 of the
edge 1E, and the tongue sides 13a and 13b are shown in FIG. The front side of the edge base
material B is exposed by bending the front side and turning the flat braided tinsel wire ends 2ha
and 2hb on the back side extending to the tongue side portions 13a and 13b to the front side,
and the terminal lugs on the exposed portions There is a method of connecting parts by pressing
part of 4 and soldering the lug 4 and the pressed parts with the flat knitting tin wire ends 2ha
and 2hb, but it is natural that the tongue side part It has the disadvantage of requiring extra manhours for bending 13a, 13b and terminal lugs 4 with a special shape as shown in the figure.
[0031]
SUMMARY OF THE INVENTION It is an object of the present invention to solve the abovementioned conventional drawbacks and to provide a method of manufacturing a speaker
suspension device and a speaker suspension device which can be produced inexpensively. is
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there.
[0032]
A suspension apparatus for a speaker to which the manufacturing method of the present
invention is applied includes a suspension (1) and a conductor (2h) for connecting voice coils
mounted along a surface of the suspension (1). And.
Then, in the manufacturing method of the present invention, (a) the voice coil connecting
conductor (2h) is attached along the surface of the planar base material (B), and the signal input
end of the voice coil connecting conductor (2h) At the corresponding position of (2ha, 2hb), the
base material (B) is a deletion part (B1), and (b) the base material (B) is pressure-formed into a
predetermined shape together with the voice coil connection conductor (2h), (c) The base
material (B) is trimmed together with the voice coil connection conductor (2h) so that the signal
input end (2ha, 2hb) of the voice coil connection conductor (2h) remains as a protrusion from the
base material (B).
[0033]
Thus, the signal input end (2ha, 2hb) of the voice coil connecting conductor (2h) already exists as
a protrusion from the suspension (1) after trimming, so the signal from the suspension (1) It is
possible to avoid peeling of the input end (2ha, 2hb) and to prevent the separation of the voice
coil connection conductor (2h) and the progress of separation of the voice coil connection
conductor (2h) from the suspension (1).
[0034]
According to the method of manufacturing a speaker suspension device of the present invention,
the deletion portion (B1) is a hole (B1) formed in the speaker suspension device.
The sewing thread (3) for attaching the voice coil connection conductor (2h) to the base material
(B) includes the voice coil connection including the portion of the hole (B1) of the voice coil
connection conductor (2h) It is sewed on the conductor (2h).
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[0035]
When the voice coil connecting conductor (2h) is sewn to the base material (B) by the sewing
thread (3) at the signal input end (2ha, 2hb), the signal input end (2ha, 2hb) is used as the base
material (2ha, 2hb) In order to peel it off from B), the sewing thread (3) needs to be pulled out of
the base material (B) and cut, and this may cause the release of the voice coil connecting
conductor (2 h) or the base material (B). It causes the peeling expansion of the voice coil
connection conductor (2h).
However, in the present invention, such a problem can be avoided because the sewing thread (3)
is only trimmed along with the base material (B) and does not need to be removed from the voice
coil connecting conductor (2h).
[0036]
Further, according to the method of manufacturing a speaker suspension device of the present
invention, the pressure forming is a heat pressure press.
The signal input terminals (2ha, 2hb) of the voice coil connecting conductor (2h) are applied with
cream solder and then hot pressed together with the substrate (B).
[0037]
The cream solder is melted by a hot press and adheres to the signal input end (2 ha, 2 hb). And
when trimming the voice coil connecting conductor (2h), the separation from the end of the
signal input end (2ha, 2hb) is effectively prevented.
[0038]
The speaker suspension device of the present invention has the following (a) and (b). (A) A
suspension (1) (b) formed by pressure-forming a flat base material (B) having a deletion part (B1)
at a predetermined location into a predetermined shape and trimming lines passing through the
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deletion part (B1) ) Mounted on the suspension (1) so that the signal input end (2ha, 2hb) is
located at the deletion portion (B1), pressure-molded with the suspension (1) and trimmed with
the suspension (1) along the trimming line Voice coil connecting conductor (2h)
[0039]
The signal input end (2ha, 2hb) of the voice coil connecting body (2h) is located at the removal
portion (B1) of the substrate (B) and is trimmed at the trimming line together with the substrate
(B). It becomes possible to omit the trouble of peeling the signal input end (2ha, 2hb) from the
suspension (1). Also, along with that, it is possible to prevent the separation of the voice coil
connection conductor (2h) and the progress of peeling of the voice coil connection conductor
(2h) from the suspension (1).
[0040]
According to the speaker suspension device of the present invention, the suspension (1) further
includes an inner bonding margin portion (14), a roll portion (11r), and an outer bonding margin
portion (12) in this order from the inside. The voice coil connecting conductor (2h) crosses the
roll portion (11r) at an end portion, and the middle portion extends to the inner bonding margin
portion (14).
[0041]
Such a speaker suspension apparatus is used, for example, for a long and thin speaker.
[0042]
According to the speaker suspension device of the present invention, the deletion portion (B1) is
a hole (B1) bored in the suspension (1).
The sewing thread (3) for attaching the voice coil connection conductor (2h) to the base material
(B) includes the voice coil connection including the portion of the hole (B1) of the voice coil
connection conductor (2h) It is sewed on the conductor (2h).
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[0043]
The voice coil connecting body (2h) is sewed on the base material (B) by sewing thread (3) and
attached, but the signal input ends (2ha, 2hb) are together with the base material (B) Since it is
trimmed and does not need to be peeled off from the base material (B), the trouble of removing
the sewing thread (3) from the base material (B) is avoided in that case.
[0044]
DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present
invention will be described below with reference to FIGS.
In FIGS. 1 to 7, the reference numerals of common parts are the same as those of the
conventional example, and this embodiment will be described by taking the sewing conductive
edge 1Es as an example, but the method can be applied to the sewing conductive damper 1Ds
immediately. It is. The sewing conductive edge 1Es according to the present embodiment is a
slender type in which the aspect ratio of the diaphragm is about 6: 1, and the multipoint drive
type speaker which drives the diaphragm with three voice coils and a repulsive magnetic circuit.
Although the design conditions for this example were taken as an example, the design condition
of this embodiment is that the edge roll 11r is the up roll 11r, the edge affixing portion 14 with
the diaphragm df, and the voice coil wiring portion from the front of the speaker In order not to
be visible, in order to satisfy the condition, the conductive material 2 for input is disposed on the
back side of the edge roll 11r.
[0045]
First, it is a woven fabric to be the base fabric B of the edge, and the woven fabric is a woven
fabric for edge commonly used conventionally, and a cotton yarn of 30 counts and 1 twist is used
for both warp and weft, A cotton fabric with 100% to 110 g / m 2 in weight was obtained by
weaving with a density of 60 fibers / inch in both directions, and the cotton fabric was
impregnated with a resin solution with a phenol concentration of 24%, and further mixed with
NBR and SBR synthetic rubbers. After the solution is coated and the rubber-coated cotton fabric
is subjected to hot-air drying, the rubber-coated cotton fabric is cut into about 80 mm widths
with a slitter to obtain a rubber-coated edge base fabric B in the form of commonly used rolls
11r. The
[0046]
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14
As shown in FIG. 1, square holes B1 (7 mm × 5 mm) are provided at predetermined positions on
the base fabric B at predetermined intervals, and a copper wire foil is wound around fibers as the
conductive material 2 An arbitrary number of conductive wires, and flat knitting twill wire 2h
knitted in a flat knitting shape, as shown in the figure, is a yarn 3 called Conex # 40 13 mm from
the center line of the woven fabric (about a pitch of about Sew in parallel to the position
distributed to 26 mm).
[0047]
The plain knitted tinsel wire 2h is made of a tin alloy copper wire having a diameter of 0.1 mm
and processed into a foil having a width of 0.32 mm and a thickness of 0.027 mm, and a paraaramid fiber having a thickness of 200 denier at 22 ± 2 times / cm The winding wire is wound
in one layer, and the winding wire is further formed into a 7-piece set and knitted in a flat
knitting shape at a braiding pitch of 27.45 ± 0.82 mm / time.
[0048]
When the flat knitting tinsel wire 2h is sewn as described above, as shown in FIG. 1, a part of the
flat knitting tinsel wire 2h is disposed across the square hole B1 provided in the base fabric B,
and the square hole B1 is A hole B1 is generated by dividing the into two by a flat knitting / twin
wire 2h.
Furthermore, as shown in FIG. 2, the base B is placed in the lower mold D for hot-press molding,
and the lower mold D is a square hole B1 divided into two by the flat knitting tinsel wire 2h of
the base B. Since the guide pins D1 are provided at the positions corresponding to the above,
when the base fabric B is disposed, the square holes B1 divided in half into the flat knitting tinsel
wire 2h are inserted and installed in the guide pins D1.
[0049]
The mold temperature is set to about 200 ° C., and when the upper mold is lowered and the
base cloth B is held, the pressure is about 600 kg (shaft power) and the press time is about 5
seconds, as shown in FIG. As shown, the phenolic resin or the like impregnated in the base cloth
B is cured, and a predetermined roll 11r shape is molded at a predetermined position of the base
cloth B.
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When the base fabric B with the flat knitting tinsel wire 2h is taken out from the molding die
after molding, the sewn flat knitting tin thread wire 2h is naturally shaped along the roll 11r.
[0050]
The roll base 11r part on which the above-mentioned plain knitted tinsel cord 2h (two) is
mounted is transferred to the trimming step, and the edge part B which has been molded is
transferred to the trimming step, and the inner and outer parts shown by the broken line in FIG.
The part is cut off to complete as sewn conductive edge 1Es, but in the case of the present
embodiment, a die for trimming is prepared and the above-mentioned molded product to which
the flat knitting tinsel wire 2h is attached is installed in the die. The extra portion was cut by
applying a pressing process to obtain the desired sewed conductive edge 1Es as shown in FIG. 3
and FIG.
[0051]
When trimming is performed, the end of the flat braided tinsel wire 2h disposed on the square
hole is cut to a predetermined size as shown in FIG. 3 and FIG. In a state in which the base fabric
B does not intervene, that is, in a state in which the surface side and the back side of the flat
knitting tinsel wire 2h are exposed outside like the tongue portion from the outer peripheral
portion of the bonding margin 12 In addition, at the extension portions (ends) 2ha and 2hb of
the flat knitting tinsel wire 2h, a thread 3 for sewing is applied as shown in the local enlarged
view of FIG.
[0052]
As a matter of course, the sewn yarn 3 extending to the extension portions (ends) 2ha and 2hb of
the flat knitting tinsel wire 2h is also along the surface of the flat knitting tinsel wire 2h in the
heat and pressure molding process and Since it is press-formed in a familiar state, the adhesion
with the flat knitting tinsel wire extension (end) 2ha, 2hb is improved, and the end of the thread
3 is not further loosened even if the end is loosened, Since the sewn portion of the sewn yarn 3 is
lengthened by the amount of extension to the end of the flat knitting tinsel wire 2h, the sewn
yarn 3 is unwound from the end. The phenomenon that extends to the roll 11r part is none.
[0053]
In the case of the present embodiment, solder processing of the extended portions (ends) 2ha
and 2hb of flat knitting tinsel wire 2h was not performed, but the surface of plain knitting tinsel
wire 2h on the square hole as we proposed last time The cream solder adheres to the conductor
surface of the flat knitting tinsel wire 2h by heat pressing the coating at the same time as
12-04-2019
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applying heat paste to the cream solder and simultaneously extending the flat knitting tinsel wire
2h It is possible to apply a solder coat at the end (ends) 2ha and 2hb, and by carrying out the
solder treatment, it is possible to further prevent the looseness of the flat knitting tinsel wire 2h
end due to press removal in the trimming step, and also the terminal lug Soldering with 4 is also
easy.
[0054]
The outer diameter of the sewn conductive edge 1Es obtained through the trimming process is
202 mm in length and 48 mm in width, and the long side and the short side are connected by a
circular arc having a radius of 24 mm. Of about 3 mm width for bonding to the edge frame
toward the end frame, and further has a roll 11 r of 6 mm width and a radius of 3 mm of the
cross section toward the inside, and further has the bonding margin 14 toward the inside
However, the bonding margin is a bonding margin for bonding to the diaphragm df.
[0055]
A long and substantially planar diaphragm df made of pulp as shown in FIG. 14 is adhered to the
pasting margin, but in the case of the present embodiment, the edge roll 11r is the up roll 11r as
described above. Since it is a design condition to make the edge affixing portion 14 with the
diaphragm df and the voice coil wiring portion invisible from the front of the speaker, as shown
in FIG. The spacer portion 14 is bonded to form a diaphragm df with a sewn conductive edge
1Es.
[0056]
Furthermore, since the holes df1 for voice coil vc attachment are provided at three places of the
diaphragm df with the sewn conductive edge 1Es, the outer periphery of the voice coil vc is
inserted into the hole df1 as shown in FIG. Bond the individual voice coil vc outer peripheral part
and the diaphragm df, and connect and wire the end of the voice coil vc wire to the flat braided
twine wire 2h attached to the edge, and the voice coil vc wiring part on the back surface of the
diaphragm The arrangement is made such that the condition for making the voice coil vc wiring
portion which is the design condition not to be seen from the front of the speaker is satisfied.
[0057]
In the present embodiment, the diaphragm df with the sewing conductive edge 1Es and the voice
coil vc is adhered to the frame F as shown in FIG.
12-04-2019
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Frame F is made of ABS resin with glass fiber, outer diameter dimensions 228 mm long, 49.6 mm
wide, 15 mm deep, at the bottom of the frame basket part and at the center of the frame F, and
60 mm in length from the center Pole parts F1 with a diameter of 5 mm and a height of 14 mm
are integrally provided at a total of 3 locations distributed.
[0058]
Further, at one side of the flange portion F2 for mounting the frame F provided on the short side
of the frame F, two mounting holes F3 for the input terminal lug 4 as shown in FIG. 6 are
provided.
The hole F3 is a square hole F3 having a side of 2.5 mm, and penetrates from the surface of the
flange portion F2 to the back surface, and the surface side of the flange portion F2 has a
diameter of 8 mm and a counterbore portion having a depth of 1 mm and the square hole F3. It
is provided concentrically.
The pitch dimension of the square holes F3 is the same as the stitching pitch dimension (26 mm)
of the flat knitting tinsel wire 2h attached to the sewing conductive edge 1Es.
[0059]
As shown in FIG. 6, the adhesive h is applied to the edge bonding portion of the frame F, and
although not shown in the explanatory drawing, the voice coil vc is inserted after inserting the
voice coil vc positioning jig into the pole portion F1. The inner periphery of the voice coil vc of
the diaphragm df with the sewing conductive edge 1Es is inserted into the outer periphery of the
jig.
In order to satisfy the design conditions at the time of insertion, as shown in FIG. 6, the
diaphragm df is turned over so that the edge is in the state of the up roll 11r, and the wiring
portion with the voice coil vc and the flat braided tinsel wire 2h is the diaphragm backside.
Arranged on the side to make the wiring part invisible from the front of the speaker, insert the
extending part (end part) 2ha of the flat knitting tinsel wire 2h and 2hb in the direction of the
hole F3 for attaching the input terminal lug 4 and insert Do.
12-04-2019
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[0060]
When inserted in this state, the bonding margin 12 provided on the outer periphery of the sewn
conductive edge 1Es contacts the adhesive, and when the bonding margin is pressed, the voice
coil vc is arranged at a predetermined position of the frame F At the same time, the sewn
conductive edge 1Es with the voice coil vc is adhered to a predetermined position of the frame F.
As a matter of course, during the bonding, the flat knitting tinsel wire 2h is disposed on the back
side of the edge, and a part of the flat knitting tinsel wire 2h extending to the bonding margin 12
is bonded to the frame, as shown in FIG. In addition, the copper foil of the tinsel wire constituting
the flat braided tinsel wire 2ha, 2hb is exposed on both the front and back surfaces of the
extension portions (ends) 2ha and 2hb of the plain braided tinsel wire 2h for connecting to the
input terminal lug 4 In this state, the counterbore portion of the hole F3 for attaching the input
terminal lug 4 is also closed by half.
[0061]
In this state, the input terminal lugs 4 are attached. The terminal lugs 4 are input terminal lugs 4
widely used in conventional general speakers, and are generally referred to as faston terminal
lugs and have a thickness of 0.5 mm. The brass is pressed and nickel-plated, etc. As shown in the
figure, a square cylinder with 2.5 mm square and about 3.5 mm in length and about 0.5 mm
thick on one side The crimped portion 41 is provided, one of which is shown in FIG. 7 being the
plus side lug 4a and the other being the minus side lug 4b.
[0062]
The caulking method is also completely the same as the method of attaching the terminal lug 4
to the conventional terminal board, and the caulking portion is inserted into the mounting square
hole F3 from the F2 back surface of the frame flange as shown in FIG. The input terminal lug 4 is
bent so that each side is equally divided into four outward directions as shown in the local
enlarged view of FIG. By caulking on the frame F.
[0063]
In the case of the present embodiment, the flat knitting tinsel wire extension portions (end
12-04-2019
19
portions) 2ha and 2hb are terminal-mounted as shown in FIG. 7 at a part of the caulking portion
41, that is, one side bent into four equal parts. The lug 4 was attached to the frame F while being
inserted into the counterbore of the hole F3.
In the attached state, the terminal lug 4 and the voice coil vc become conductive.
Generally, there is no quality problem in the wiring connection only in the state of sandwiching
the flat knitting tin thread wire extension portion (end portion) 2ha, 2hb as described above, but
in the case of this embodiment, the flat knitting tin thread wire extension The boundary between
the protruding portions (end portions) 2ha and 2hb and the lug caulking portion 41 was
soldered as shown in the local enlarged view of FIG.
[0064]
Further, in the connection wiring method, since all the conductors (copper foils) of the flat
braided twine wire wire extension portions (end portions) 2ha and 2hb are exposed, there is a
wiring method other than the present embodiment.
For example, first, the input terminal lug 4 is attached to the frame F, and then the voice coil vc
and the diaphragm df with the sewing conductive edge 1Es are bonded to the frame F, and after
bonding the diaphragm df It is also possible to solder the extended portions (ends) 2 ha and 2 hb
directly to a part of the four equally-divided crimped portions 41 of the input terminal lug 4.
[0065]
In the above state, the voice coil vc, the diaphragm df, the sewing conductive edge 1Es, and the
input terminal lug 4 are attached to the frame F and connection wiring is completed, but the coil
positioning jig is further removed and the state is The three repulsion magnetizing circuits RM
were attached to the pole portion F1 of the frame F in order to complete as a slender multipoint
drive type speaker.
[0066]
In the speaker having the conductive suspension 1 structure, it is possible to arrange the end of
12-04-2019
20
the conductor 2 (2ha, 2hb) such as the flat braided tinsel wire 2h in a state where the suspension
base B is not interposed.
Moreover, even if the conductor 2 is disposed on the front surface side or the back surface side
of the base material B in relation to the arrangement of the conductor 2 with the suspension base
material B, the end portions (2 ha, 2 hb) of the conductor 2 are base material B Is placed in a
state in which all of the end portions are exposed without being affected by the effect, so the
most widely spread soldering as a connection wiring method is far easier than the conventional
example in connection wiring with input terminal lugs 4 etc. Therefore, the connection wiring
structure can be simplified, and the degree of freedom in design can be greatly improved.
[0067]
In addition, when the conductive suspension 1 is manufactured, the end portions (2ha, 2hb) and
the like of the conductor 2 are disposed without the suspension base material B being easily, only
by adding a simple press punching process which is a conventional technique. It is possible to
In addition, in the method of attaching the conductor 2, application of the flat knitting tinsel wire
2h sewing method, which is the most proven and low cost, becomes possible.
Therefore, it is possible to provide the conductive suspension 1 for a speaker which is
inexpensive and in which the degree of freedom of connection wiring is significantly improved.
[0068]
Furthermore, the conductor end portions 2ha and 2hb of the flat knitting tinsel wire 2h and the
like exert the sewn yarn 3 to the end portions 2ha and 2hb of the extension portion of the plain
knitting tinsel wire 2h without interposing the suspension base material. In the state, as
described above, there is no phenomenon that the sewing thread 3 unraveling that extends to the
flat knitting tinsel wire ends 2ha and 2hb disappears, and the speaker having the conductive
suspension 1 with extremely stable quality, and the speaker wiring method It is possible to
provide
[0069]
Brief description of the drawings
12-04-2019
21
[0070]
1 is a perspective view showing a state in which the base material for the sewn conductive edge
in the present invention is provided with a hole, and the flat knitting tinsel wire is sewn with a
sewn yarn.
[0071]
2 is a perspective view showing a state in which the base material for the sewing conductive edge
in the present invention is installed in the lower mold for molding.
[0072]
3 is a perspective view showing a state in which the sewing conductive edge according to the
present invention is formed and then subjected to trimming processing after the formation.
[0073]
4 is a perspective view showing a state in which the sewing conductive edge in the present
invention is attached to the diaphragm from the back surface side, and a local enlarged
perspective view showing the flat knitting tinsel wire end portion viewed from the back surface
side.
[0074]
5 is a perspective view showing a state in which the voice coil is attached to the diaphragm with
sewing conductive edge in the present invention from the back surface side.
[0075]
6 is a perspective view showing the voice coil and the diaphragm with sewing conductive edge
according to the present invention, and the input terminal lug attached to the frame from the
front side of the speaker.
[0076]
After attaching a frame to the voice coil, sewing conductive edge, diaphragm and input terminal
lug according to the present invention, a perspective view showing a state in which a repulsive
magnetic circuit is attached and a multipoint drive type speaker is completed, and a flat braided
twine wire It is a local expansion perspective view which shows the connection wiring state of an
12-04-2019
22
edge part and an input terminal lug.
[0077]
FIG. 8 is a plan view and a partially enlarged view showing a flat knitting tinsel wire sewed on a
base material for a sewn conductive damper of the conventional example with sewn yarn.
[0078]
FIG. 9 is a plan view showing a state in which a corrugation or the like is thermoformed on a base
material for a sewed conductive damper in which a flat knitting tinsel wire is sewn with a sewing
thread in the conventional example.
[0079]
FIG. 10 is a plan view showing a trimming portion of a flat knitting twine wire-lined damper base
material obtained by thermoforming corrugation etc. in the conventional example.
[0080]
FIG. 11 is a plan view and a perspective view showing a completed state of the sewing conductive
damper of the conventional example.
[0081]
12 is a perspective view showing the connection state wiring with the input terminal lug in a
state where the sewing conductive damper of the conventional example is attached to the
speaker frame.
[0082]
FIG. 13 is a perspective view showing a state in which a sewing thread is unwound in order to
make the flat knitting tinsel wire attached to the sewn conductive damper of the conventional
example not include the damper base material.
[0083]
FIG. 14 is a perspective view showing a state before mutual assembly of the woven conductive
damper of the conventional example, the terminal ring provided with the wiring pattern, and the
input terminal lug.
12-04-2019
23
[0084]
FIG. 15 is a perspective view showing the assembled state of the conventional woven conductive
damper, the terminal ring provided with the conductive pattern, and the input terminal lug.
[0085]
FIG. 16 is a local enlarged cross-sectional view showing the arrangement relationship with the
input terminal lug at a conductive edge where a conductive material such as a flat braided cord
wire is disposed on the edge back surface side in the conventional example.
[0086]
Explanation of sign
[0087]
1, conductive suspension (suspension) 11c corrugation 11r roll (roll portion) 12 conductive edge
or conductive damper sticking margin (outside sticking margin) 13a tongue side 13b tongue side
14 conductive edge sticking margin (inner sticking margin) ) 1E conductive edge 1Es sewn
conductive edge 1D conductive damper 1Di woven conductive damper 1Ds sew conductive
damper 2, conductor 2h flat braided tinsel wire (conductor for voice coil connection) 2ha plain
braided tinsel thread end (signal input end) 2hb Flat knitting yarn thread end (signal input end)
3, sewing thread 4, input terminal lug 41, input terminal lug caulking portion 4a, input terminal
lug positive side 4b, input terminal lug negative side B base cloth (base material) B1 base cloth
Hole (deletion part, hole part) F Frame F1 Frame guide pole part F2 Frame flange part F3 Hole
for mounting frame input terminal Terminal ring L1 terminal ring tongue side L2 terminal ring
tongue side L3 terminal ring tongue side L11 terminal ring input terminal lug mounting hole P
wiring pattern RM repulsive magnetic circuit h adhesive vc voice coil df diaphragm df1
diaphragm hole s Solder sc cream solder
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