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JPS59141900

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DESCRIPTION JPS59141900
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
method of manufacturing a speaker, and more particularly to a method of drawing a lead of a
voice coil. (Conventional structure and its problems) The conventional method for drawing out
the lead wire of the voice coil in the speaker has been adopted as shown in FIG. 1 to FIG. In FIGS.
1 to 3, 1 is cone paper, 2 is a dust cap, 3 is a voice coil bobbin, 4 is a voice coil, 4a is a voice coil
lead wire, 5 is a copper foil wire, 6 is an eyelet ( Eyelet 7) is a soldered portion of the voice coil
lead wire 4a and the copper foil wire 5, and 8 is a damper. First of all, the method of FIG. 1 is the
most common method of drawing out and is easy in manufacture, but mechanical fatigue due to
the vibration of the cone paper 1 between the voice coil lead wire 4a and the copper foil wire 5 It
is easy to break. The method of FIG. 2 is basically the same as the method of FIG. 1, but the lead
wire 4a is a copper foil yarn without passing through the soldered portion of the copper foil wire
5 and the lead wire 4a. Because the wire 5 is wound directly on the end of the wire 5, the
reliability and mechanical strength of the soldered portion are improved. However, the strength
in the middle of the withdrawal does not change. FIG. 3 shows the most reliable method, in which
the lead wire 4a and the copper foil @ 5 are soldered on the voice coil bobbin 3 and fixed 11 and
the copper foil 5 directly along one side of the cone paper. It is a terminal device. In this case, the
reliability of solder publication and the mechanical strength against vibration are also very high.
However, since the dust cap 2 is adhered across the copper foil wire 5-there is a gap between it
and the paper surface of the cone, so the copper foil wire 50 penetrating to the back of the cone
paper is inside the dust cap 2 Limited to Therefore, a dust cap smaller than a certain size can not
be used, and also in the case of considering the damper contact, the copper foil wire 5 is attached
to the outer periphery of the cone paper <the distance is limited. (Object of the Invention) The
present invention provides a method of manufacturing a speaker having the same reliability as
the method of FIG. 3 and capable of guiding a lead to the back of a cone paper outside the dust
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1
cap. is there. The present invention relays between a voice coil leader wire and a copper foil wire
with a phosphor bronze plate, and passes a thin foil of phosphor bronze under the bonding
portion of the dust cap. The mechanical strength can be maintained and the reliability can be
enhanced. (Description of the embodiment) FIG. 4 shows an embodiment of the present
invention, the same reference numerals as in FIGS. 1 to 3 indicate the same ones, and 9 is
phosphor bronze. A plate 10 is a soldered portion of the voice coil lead wire 4a and the phosphor
bronze plate 9, 11 is a soldered portion of the phosphor bronze plate 9 and the copper foil wire
5, and 12 is a linear damper.
First, the voice coil lead wire 4a is wound around one end of the phosphor bronze plate 9 and is
soldered and fixed onto the bobbin 3. The phosphor bronze plate 9 adheres along the surface of
the cone paper 1 and passes a part of the dust cap 2 and leads it out. In this case, it is important
for the phosphor bronze plate 9 to have the necessary R to be lowered from the bobbin to the
surface of the cone and not to be bent. On the outside of the dust cap 2, the cone paper 1 is busystitched in the circumferential direction by the copper foil wire 5, and the lead-out end of the
phosphor bronze plate 9 is soldered and fixed thereto. At this time, as shown in FIG. 4 (B), it is
more reliable to bend and solder the lead-out end of the phosphor bronze plate 9 so as to wind it
around the copper foil wire 5 so as to increase the contact area. Improve the quality. (Effects of
the Invention) As described above, according to the present invention, even when the position of
the through hole on the back of the cone is outside the dust cap, highly reliable lead wire
extraction is possible. This is a result of using a phosphor bronze plate which is strong in
mechanical strength even if the thickness is thin. According to the present invention, as shown in
FIG. 4, in the speaker using the linear damper, the relay copper foil wire between the terminal of
the frame and the cone paper keeps a sufficient distance from the damper! It is particularly
effective when there is a need to
[0002]
Brief description of the drawings
[0003]
1 to 3 are each a partial sectional view showing a conventional method of drawing a voice niile
lead wire, and FIG. 4 is a partial sectional view showing a method of drawing a voice coil lead
according to an embodiment of the present invention. It is.
1 ......... cone paper, 2 ......... dust cap, 3 ..... path °° voice coil bobbin, 4 ..... voice coil, 4a ·· .... voice
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coil lead wire, 5 ......... Dohakuito line, 9 ......... phosphor bronze plate, 12 ... Pas ° ... linear damper.
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3
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