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DESCRIPTION JPH11113091

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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
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DESCRIPTION JPH11113091
[0001]
BACKGROUND OF THE INVENTION In recent years, various shapes of speakers have come to be
required due to restrictions on the installation places such as TVs and car cabins. Under such
circumstances, a multi-point drive type speaker has been proposed in which a single diaphragm
having a structure capable of easily obtaining a thin structure and a deformed structure is driven
by a plurality of magnetic circuits.
[0002]
The present invention relates to the structure of such a multipoint drive type speaker, in
particular to a wiring structure.
[0003]
2. Description of the Related Art In the wiring structure of a speaker, the lead wire from the voice
coil is made to run along the diaphragm from the upper side of the diaphragm according to a
method generally used conventionally as a method of connecting the input terminal and the
voice coil. There is a method of connecting with a tinsel wire at a position of a hole provided at
an appropriate position on a diaphragm easy to wire to a terminal, and drawing the tinsel wire to
the back side of the diaphragm and jumping to a terminal.
[0004]
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However, in the case of using this method for multi-point driving, the wiring operation for wiring
the tinsel wire extending to the back side of the diaphragm to the terminal is physically very
difficult and complicated when wiring. .
Even if it is simplified by devising the shape of the frame etc., it is necessary to make a hole for
tinsel wire wiring at the diaphragm level first, and in order to wire the tinsel wire coming out on
the diaphragm to the terminal For this purpose, after attaching the diaphragm to the voice coil, it
is necessary to apply an adhesive or the like so that the lead wires along the diaphragm run wild
and no abnormal sound is generated, and the assembly is very troublesome. It can easily be
imagined.
[0005]
An example of a conventional multi-point drive type speaker structure is shown in FIG.
This conventional multi-point drive type speaker is a two-point drive system, in which two
speakers having a general structure having an elongated diaphragm 6 are arranged, and the arcs
or elliptical arcs of the respective diaphragms 6 intersect (see FIG. The structure is such that the
diaphragm 6 and the frame are connected in B), and the input terminal 7 is provided in the
vicinity (C in the figure) on the back side of the diaphragm connection portion.
[0006]
And in this example, in order to solve the above-mentioned problem, a lead wire and a winding
thread are near the center (D in the figure) of a position where diaphragm 6 and damper 10 are
attached to voice coil boss pin 11 in voice coil bobbin 11 outer peripheral part. Voice coil with
wire 8 soldered (hereinafter referred to as connecting voice. ), And the tinsel cords are wired in
parallel by jumping from the bobbin portion of the voice coil 9 on both sides to the input
terminal. As a result, the voice coil 9 and the input terminal 7 can be wired from the front in the
absence of the diaphragm, and then the diaphragm 6 is mounted.
[0007]
However, even with this method, due to the nature of the connecting voice, the intervals between
the diaphragm 6 and the tinsel wire 8 and between the tinsel wire 8 and the damper 10 are
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2
sufficiently large so that contact between the tinsel wire 8 and the diaphragm 6 or the damper
10 does not come out. Since the distance from the voice coil 9 to the diaphragm 6 becomes long
and the propagation speed of the audio signal is lowered, and the tinsel wire 8 is attached only in
one direction to the vibration system, each drive It is obvious that the balance of the compliance
becomes worse on the side opposite to the terminal plate side of the damper 10 of the part, and
there is a high possibility of rolling or the like at the time of large input.
[0008]
In addition, if it is intended to change, for example, from 2 point drive to 3 point drive and
further increase the number of drive points, if it is intended to carry out with one terminal, as
shown in FIG. Not only is it necessary to make a large jump, it takes time and effort to assemble,
it becomes troublesome, and the long filament wire 8a which has become long runs wildly to
generate an abnormal sound or to hit a frame or the like.
In addition, if the number of terminals is increased, the cost of the terminals is simply increased,
and in this case, the wiring to the speaker must be divided into a plurality in parallel, which
complicates the structure and increases the manufacturing cost.
[0009]
As described above, in the conventional speaker wiring structure, there is a problem that the
assembly problem and the compliance of each drive unit can not be equalized even in the twopoint drive, and further driving points Even if it were to be obtained, a further major structural
problem occurred and implementation was difficult.
[0010]
The present invention has been made in view of the above problems, and an object of the present
invention is to provide a wiring structure of a speaker in which the wiring work is simplified and
the wiring material is prevented from generating abnormal noise. It is in.
[0011]
SUMMARY OF THE INVENTION In order to solve the above problems, it has been decided to use
the conductive damper proposed by the present applicant in Japanese Patent Application No. 4-
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47162 as shown in FIG.
This conductive damper has a structure in which a flat wire tinsel wire 2 is sewn to the damper
cloth 1 with the damper sewing thread 3. If this conductive damper is used, the tinsel wire jumps
greatly as in the prior art, or newly The drive points can be infinitely increased without providing
terminals, and the balance of compliance can be made more uniform than in the prior art, and in
the nature of the conductive damper, when assembling the respective drive parts and thus the
entire multipoint drive speaker, It can save much time and effort.
[0012]
Therefore, in the speaker wiring structure of the present invention, in a multipoint drive type
speaker in which one diaphragm is driven using a plurality of drive magnetic circuits, a
conductor formed by braiding an arbitrary number of tinsel wires in a flat net shape A plurality
of conductive dampers mounted in a state of being in line with the corrugated portion of the
damper are used in series connection.
[0013]
Further, in the speaker wiring structure, an eyelet or the like may be provided on a flat braided
winding wire line of the plurality of conductive dampers for soldering between the conductive
dampers.
[0014]
Further, in the wiring structure of the speaker, the shape of the conductive damper is configured
to be separated in the amplitude direction of the damper with respect to the frame to which the
shape of the conductive damper is attached at the position where the eyelet is made.
[0015]
Further, in the wiring structure of the same speaker, an insulator is mounted between the frame
and the tinsel wire or the eyelet at the position where the eyelet is to be made.
[0016]
Further, in the above-described speaker wiring structure, the plurality of conductive dampers are
integrally formed by mounting an arbitrary number of flat braided tinsel cords over the entire
length.
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[0017]
Further, in the wiring structure of the speaker, the centers of concentric circles of the integrally
formed conductive dampers are disposed in a straight line parallel to the tinsel wire.
[0018]
Further, in the wiring structure of each of the speakers, a corrugation is provided at a position
connecting the damper to each drive unit in the integrally formed conductive damper.
[0019]
Embodiments of the present invention will be described with reference to the drawings.
A first embodiment is shown in FIG. 2 (a).
The electrically conductive damper used in this wiring is shown in FIG.2 (b).
A tin alloy copper wire with a diameter of 0.1 mm is processed into a foil with a width of 0.32
mm and a thickness of 0.027 mm in a damper material 1 which is impregnated with a phenol
resin and which is not cured yet and has a thickness of 200 denier A plain weave twill wire 2
knitted in a flat net shape having a width of 27.45 ± 0.82 mm is made up of 13 sets of twill wire
wound at a single layer at 22 ± 2 times / cm on a para-aramid fiber, under the trade name
Conex # Two threads 3 called 40 are sewn using two or more conductive dampers prepared by
thermoforming them, and two or more conductive dampers are prepared, and a terminal is
attached to either of the two ends.
In this example, it was attached to the end, but of course, it can be attached to various positions
according to the usage instead of the both ends.
The conductive dampers are soldered to the flat knitting tinsel wire 2 using the tinsel yarn 4.
[0020]
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It is preferable to have an eyelet in the place (A in the figure) to which the tinsel wire connecting
the conductive dampers is soldered.
Furthermore, when the frame is metal, this portion may be raised from the surface of the frame
so as not to short with the eyelet, or a single insulator may be interposed between the frame and
the damper.
[0021]
Further, as for the wiring of the voice coil and the plain weave tinsel wire, the method of
connection with the plain weave tinsel wire mounted on the conductive damper previously
proposed by the present applicant in Japanese Patent Application No. 4-47162 is used.
Generally speaking, a copper foil for connection is attached to a voice coil bobbin in advance, and
the conductive damper and the voice coil bobbin are arranged and soldered so that the position
matches the position of the flat braided twine wire. This is the method already performed in the
wiring structure.
[0022]
A conductive damper used in the wiring of the second embodiment of the present invention is
shown in FIG.
As shown in the figure, a plurality of conductive dampers are formed into a connected shape,
leaving a bridge portion for connecting flat wire twine wires of each conductive damper, and a
pair of flat woven twine wires 2 is used as a yarn of damper fabric 1 of an integrally formed
damper. After that, wiring is performed as described above to the respective magnetic circuits
using the integrally formed damper sewed and mounted at 3.
[0023]
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Here, at the time of assembly, after bonding the damper to the voice coil bobbin at the first drive
point, at the next drive point, the conductive damper is largely displaced with respect to the
magnetic circuit, and the voice coil bobbin does not fit in the inner hole of the damper It is
conceivable that the magnet of the voice coil may come into contact. A corrugation 5 is provided
in the bridge portion so that adjustment can be made in such a case.
[0024]
In this example, only one diaphragm is provided for all the dampers, but in some cases, the
compliance of the diaphragm, the damper, etc. may be different at each driving point.
[0025]
Naturally, the way of arranging the drive parts is not straight and may be angled, but it is easy to
imagine that it is very simple when the flat braided twill wire is attached to the damper fabric if
arranged in a straight line.
[0026]
Also, although this example uses three-point driving as an example, it is also possible to further
increase the number of driving parts by adjusting the impedance.
[0027]
According to the wiring method of the present invention, the compliance of each drive unit can
be made uniform, which makes it possible to prevent the rolling etc. of the vibration system, and
the assembly can be performed by the conventional multipoint drive. Thus, it is possible to obtain
a multipoint drive type speaker which is easier than type speakers and which can have an infinite
number of driving parts.
[0028]
In addition, according to the method of the present invention, since the distance between the
damper and the diaphragm can be made as short as possible compared to the connecting voice,
the propagation speed of the input signal is increased, and as a result, a multipoint drive type
having good characteristics. A speaker can be obtained.
[0029]
Furthermore, by providing an eyelet or the like at the attachment portion of the tinsel wire, it is
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possible to save labor of the connection work of the conductive dampers.
[0030]
Furthermore, if a pair of flat braided tinsel cords are attached to a plurality of the conductive
dampers and integrally molded, there is no need to jump the tinsel cords, and the assembly
becomes easier.
Also, in this case, there is no jumped tinsel line, so there is no need to worry about the runaway.
Here, by providing the contact 5 at the connection between the dampers, a great effect can be
obtained when adjusting the centers of the dampers with respect to the drive magnetic circuits at
the time of assembly.
[0031]
In addition, by integrally molding, it is not necessary to use a twine wire or an eyelet connecting
each damper, the number of parts can be significantly reduced, the number of assembling steps
can be reduced, and the processing cost can also be reduced.
Therefore, the manufacturing cost can be significantly reduced as a whole.
[0032]
Brief description of the drawings
[0033]
1 is a perspective view showing a conductive damper used in the embodiment of the present
invention.
[0034]
FIG. 2 (a) is a front view showing a conductive damper used in the first embodiment of the
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present invention, and FIG. 2 (b) is an enlarged sectional view taken on the air plane in FIG. 2 (a).
[0035]
FIG. 3 (a) is a front view showing a conductive damper used in the second embodiment of the
present invention, and FIG. 3 (b) is a cross-sectional view showing the same conductive damper.
[0036]
4 (a) is a front view showing a conventional multi-point drive type speaker, and FIG. 4 (b) is a
cross-sectional view showing the multi-point drive type speaker.
[0037]
FIG. 5 (a) is a front view showing a conventional three-point drive speaker, and FIG. 5 (b) is a
cross-sectional view showing the three-point drive speaker.
[0038]
Explanation of sign
[0039]
DESCRIPTION OF SYMBOLS 1 Conductive damper fabric 2 Flat wire for winding of conductive
damper 3 Wire for damper sewing 4 Winding wire for winding 5 Corrugation for gap adjustment
6 Diaphragm 7 Terminal 8, 8a String of winding 9 voice coil 10 Damper 11 voice coil bobbin
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