JPH04128490

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DESCRIPTION JPH04128490
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
structure of a speaker case formed by using a conductive resin in a predetermined portion, and
more particularly to a structure of a speaker case suitable for eliminating abnormal vibration due
to a wiring material or the like. .
[0002]
2. Description of the Related Art Heretofore, many speaker systems in which a speaker unit or
the like is mounted have been provided in the perspective view shown in FIG. In the figure, 3 is
an input terminal provided in the speaker case, 4 is a network circuit provided in the speaker
case, 5 is a first speaker, for example, a wether speaker unit, 6 is a second speaker, for example, a
tweeter speaker unit, 50 Is a speaker case, 51 is a speaker case / front panel attached with a
speaker unit, and 52 is a wiring member.
[0003]
An acoustic signal applied to the speaker is applied to the input terminal 3, and this acoustic
signal is subjected to signal processing from the input terminal 3 by the network circuit 4 inside
the speaker case 50. For example, as shown in FIG. The sound is supplied to the first and second
speakers 5 and 6 and output as sound.
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[0004]
In the above speaker system, the wiring member 52 is used to wire the signal supply line
between the input terminal 3, the network circuit 4 and the first and second speakers 5 and 6.
[0005]
However, in the above-described conventional speaker system, the wiring member 52 is provided
between the input terminal 3 and the network circuit 4 in the speaker case 50 and between the
speaker units 5 and 6 of the front panel 51. Since the wiring is performed, the wiring member 52
resonates by the acoustic signal and contacts with other parts and the like to generate noise.
[0006]
For this reason, although the styling and binding on the wiring of the wiring material 52 are
carried out to prevent the above-mentioned problems, there is a disadvantage that processing of
the wiring material 52 is difficult and productivity is impaired. There was also a possibility that a
wiring mistake of the wiring member 52 would occur.
[0007]
The present invention has been made in view of the above points, and the object of the present
invention is to eliminate the drawbacks of the prior art, and to form the speaker case by nonconductive resin and conductive resin and to wire each portion. To provide a speaker case
structure in which the wiring material to be removed is eliminated.
[0008]
SUMMARY OF THE INVENTION The structure of the speaker case according to the present
invention is a speaker case of a speaker system having a plurality of speaker units and a network
circuit attached thereto and an input terminal to which an input signal of the speaker is applied
In the above structure, the conductive resin is provided in a predetermined portion of the
speaker case formed of the nonconductive resin, and the wiring in the speaker case is formed of
the conductive resin.
[0009]
Further, the wiring of the network circuit may be formed of the above-described conductive
resin, and the network circuit component may be attached between the conductive resins of the
speaker case.
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[0010]
Furthermore, when resin molding of the speaker case, a network circuit component inserted at a
predetermined position between the conductive resins can be integrally molded.
[0011]
According to the present invention, the speaker case of the speaker system having the input
terminal to which the plurality of speaker units and the network circuit are attached and the
input signal of the speaker is applied is made of the nonconductive resin and the conductive The
conductive resin is formed of resin, and the conductive resin is disposed at a predetermined
portion between the input terminal, the network circuit, and the input / output terminal of the
speaker unit, and the wiring in the speaker case is formed of the conductive resin.
[0012]
As described above, the wiring material in the speaker case can be eliminated by forming the
wiring in the speaker case with a conductive resin.
[0013]
Further, the wiring of the speaker network circuit is formed of the above-mentioned conductive
resin, and the network circuit component is directly attached to the mounting hole provided on
the above-mentioned conductive resin, thereby making the printed circuit board of the network
circuit unnecessary. Similarly, there is no wiring material, and a reliable network circuit can be
formed.
[0014]
Further, at the time of resin molding of the speaker case, the network circuit component is
inserted and integrally molded at a predetermined position between the conductive resins
disposed at the predetermined portion, thereby manufacturing the network circuit in the
manufacturing process of the speaker case. Can be incorporated to improve productivity.
[0015]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the structure
of a speaker case according to the present invention will be described with reference to FIGS.
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The same parts as those in the conventional example are given the same reference numerals, and
the description thereof is omitted.
[0016]
FIG. 1 is an exploded perspective view showing the speaker case and the front panel in an
exploded manner, FIG. 2 is an enlarged sectional view showing an enlarged connection portion
between the speaker case and the front panel, and FIG. 4 is an enlarged sectional view showing
an enlarged mounting portion of a speaker unit, and FIG. 5 is an enlarged mounting portion of a
network circuit component of another embodiment (second embodiment). FIG. 6 is an enlarged
perspective view showing a mounting portion of a network circuit component of still another
embodiment (third embodiment) in an enlarged manner.
[0017]
In the figure, 1 is a speaker case, 2 is a front panel of the speaker case 1, 7 is a conductive resin
disposed on a predetermined portion of the speaker case 1 and the front panel 2, 10 is a printed
circuit board of a network circuit 4, 11 Is a network circuit component attached to the printed
circuit board 10, 12 is a boss for supporting the printed circuit board 10, 20 is a wiring member
for connecting the conductive resin 7 and the first speaker 5, 21 is a damper of the first speaker
5 Reference numeral 22 denotes a moving coil of the first speaker 5, and reference numeral 23
denotes a mounting screw for mounting the first speaker 5.
[0018]
Also, 30 shown in FIG. 5 is a network circuit of another embodiment, 31 is a component
mounting hole provided in the conductive resin 7 on the network circuit 30, and 40 shown in
FIG. 6 is still another embodiment. An example network circuit, 41 is a network circuit
component inserted between the determined conductive resins 7, and 42 is a mounting hole for
mounting the insert network circuit component 41.
[0019]
The speaker case 1 and the front panel 2 are formed by resin molding using a nonconductive
resin and a conductive resin 7.
The conductive resin 7 is molded into predetermined portions so as to wire the input terminals 3
and the network circuit 4 attached to the inside of the speaker case 1 and the first and second
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speakers 5 and 6 attached to the front panel 2.
[0020]
By molding the conductive resin 7 into a predetermined portion in this manner, an acoustic input
signal from the input terminal 3 is supplied to the network circuit 4 through the conductive resin
7 and signal processed by the network circuit 4. The acoustic signal is supplied to the first and
second speakers 5 and 6 through the conductive resin 7 wired to the front panel 2.
As shown in FIG. 2, the conductive resin 7 is automatically connected to the conductive resin 7
and the front panel 2 of the speaker case 1 by assembling the front panel 2 to the speaker case
1.
[0021]
Also, the network circuit 4 inside the speaker case 1 mounts the network circuit component 11
on the printed circuit board 10, and this printed circuit board 10 is fixed to the speaker case 1 by
the boss 12 and input / output signals to the network circuit component 11 Are wired to the
conductive resin 7 of the speaker case 1 as shown in FIG.
[0022]
Further, as shown in FIG. 4, the first speaker 5 attached to the front panel 2 by the attachment
screw 23 is an input of the first speaker 5 from the conductive resin 7 through the wiring
member 20 as an acoustic input signal. It is connected to the terminal, is supplied to the moving
coil 22 through the damper 21, and an acoustic output can be output from the first speaker 5.
[0023]
The attachment and wiring of the second speaker 6 attached to the front panel 2 is also
performed in the same manner as described above, and a two-way speaker system can be
formed.
[0024]
By wiring the speaker case 1 and the front panel 2 with the conductive resin 7 as described
above, the wiring operation as in the prior art is eliminated, and the problems caused by the
wiring material and the like can be resolved.
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[0025]
In the network circuit 30 (shown in FIG. 5) of another embodiment (Embodiment 2), a mounting
hole 31 is provided at a predetermined position of the conductive resin 7 inside the speaker case
1 and the mounting hole 31 is directly The network circuit component 11 is attached by
soldering.
[0026]
That is, since the network circuit 30 is formed by using the conductive resin 7 of the speaker
case 1, the printed circuit board 10 becomes unnecessary, the assembly operation becomes easy,
and the productivity can be improved.
[0027]
Further, the network circuit 40 (shown in FIG. 6) of another embodiment (embodiment 3) is
provided at a predetermined position in the nonconductive resin of the speaker case 1 at the
time of resin molding of the speaker case 1 The circuit component 41 of the network circuit 40
formed of the conductive resin 7 is inserted into the resin and molded.
[0028]
That is, since the network circuit 40 can be formed of the insert network circuit component 41
decided at the same time as resin molding of the speaker case 1, erroneous wiring of the network
circuit 40 and erroneous attachment of components can be eliminated. Further, since the
manufacturing operation and the mounting operation of the printed circuit board 10 of the
network circuit 40 and the like are eliminated and the parts are fixed, the reliability can be
improved.
[0029]
As described above, since the structure of the speaker case according to the present invention is
formed using the conductive resin, the generation of the abnormal noise due to the resonance
due to the wiring material of the conventional example is completely eliminated. In addition,
there is an effect that wiring errors of wiring materials, styling of wiring, and necessity of binding
operation can be eliminated, and defects due to soldering of wiring materials can be eliminated
and production cost can be reduced.
[0030]
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Further, since the network circuit parts are directly wired or fixed as in the second and third
embodiments, there is an effect that the reliability of the circuit can be improved and the
automation of the assembly process can be facilitated.
[0031]
Also, since the speaker case is a hybrid construction of two kinds of materials, a nonconductive
material and a conductive material, the surface waves of the speaker case of different materials
are not exposed without revealing the inherent resonance which adversely affects hearing. Has
the effect of being cut.
[0032]
Moreover, it has excellent features such as simple structure and low cost because it can be easily
implemented.
[0033]
Brief description of the drawings
[0034]
1 is an exploded perspective view of a speaker case and a front panel showing an embodiment of
the structure of the speaker case according to the present invention.
[0035]
2 is an enlarged sectional view showing an enlarged connection portion between the speaker
case and the front panel of FIG.
[0036]
3 is a cross-sectional view showing a network circuit inside the speaker case of FIG.
[0037]
4 is an enlarged sectional view showing a speaker unit mounting portion of FIG. 1 in an enlarged
manner.
[0038]
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5 is an enlarged perspective view showing the mounting portion of the network circuit
component of the other embodiment.
[0039]
6 is an enlarged perspective view showing the mounting portion of the network circuit
component of the other embodiment.
[0040]
7 is an exploded perspective view of a speaker case and a front panel showing a conventional
example.
[0041]
Explanation of sign
[0042]
REFERENCE SIGNS LIST 1 speaker case 2 speaker case / front panel 3 input terminal 4 network
circuit 5 first speaker 6 second speaker 7 conductive resin 10 printed circuit board 11 network
circuit component 12 boss 20 wiring member 21 damper 22 moving coil 23 mounting screw 30
Network circuit 31 of another embodiment Component mounting hole 40 Network circuit 41 of
another embodiment Insert network circuit component 42 Mounting hole
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