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JP2006325272

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2006325272
An object of the present invention is to provide a speaker whose cost can be reduced. In order to
achieve this object, according to the present invention, in particular, each of the first and second
lead wires 11 and 12 of the voice coil 8 is any one of the upper plate 2, the lower plate 3 a and
the frame 6. It is set as the speaker derived | led-out to the back surface or surrounding surface
of a speaker via the 1st and 2nd electroconductive part 18 and 19 which were provided. This
makes it possible to eliminate the terminals and consequently achieve a cost reduction. [Selected
figure] Figure 1
スピーカ
[0001]
The present invention relates to a speaker used for various audio devices and information
communication devices and the like, and further relates to the structure thereof.
[0002]
The structure of the conventional speaker will be described with reference to FIGS.
[0003]
The speaker shown in FIG. 15 is generally called an external magnet type.
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A magnet 21 magnetized so as to surround the convex portion of the lower plate 23 having a
convex portion is disposed, and the magnet 21 is sandwiched between the upper plate 22 and
the lower plate 23 to constitute a magnetic circuit 24.
A frame 26 is provided on the upper plate 22, a terminal 31 is provided on the frame 26, and a
diaphragm 27 is provided on the periphery of the frame 26. The voice coil 28 provided on the
diaphragm 27 is fitted in the magnetic gap 25 of the magnetic circuit 24, and the lead wire 32 of
the voice coil 28 is routed along the back surface of the diaphragm 27 to the terminal 31 It is
connected by soldering.
[0004]
On the other hand, the speaker shown in FIG. 16 is generally called an internal magnet type, and
the major difference from FIG. 15 lies in the position of the magnet 21 of the magnetic circuit 24.
That is, the magnet 21 of the magnetic circuit 24 composed of the upper plate 22, the magnet 21
and the yoke 33 is disposed inside the yoke, that is, inside the voice coil 28. Another difference is
that the frame 26 is provided to the yoke 33.
[0005]
In either structure, the lead wire 32 is routed along the back surface of the diaphragm 27 to the
terminal 31 in the same manner.
[0006]
The function of the terminal 31 is only to input an electrical signal from the set side, and does
not contribute to the improvement of the acoustic characteristics.
However, the cost of parts of the terminal, the cost of producing the installation of the terminal
and the cost of the production equipment account for a large part of the overall cost of the
speaker, and there is a problem with the cost reduction.
[0007]
Then, an object of this invention is to provide the speaker which can reduce cost.
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[0008]
In order to achieve this object, the invention according to claim 1 of the present invention is
particularly characterized in that each of the first and second lead wires of the voice coil is
provided on any of the upper plate, the lower plate, and the frame. It is a speaker led to the back
surface or the surrounding surface of the speaker through the first and second conductive parts,
and the terminal can be eliminated by the above configuration, and as a result, the reduction of
cost can be achieved. .
[0009]
That is, by replacing the terminal to which the voice coil lead wire is connected, the terminal can
be eliminated, resulting in the cost of the terminal body, the production cost for connecting the
terminal to the frame, and the cost of this production facility. The cost resulting from the
terminal can be reduced.
[0010]
Furthermore, regarding the wire connection, it is possible to eliminate the soldering by
considering the power supply structure with the set side, and as a result, it is possible to simplify
the wire connection including the set side.
[0011]
According to a second aspect of the present invention, there is provided a magnetic circuit, a
voice coil having one end movably disposed in a magnetic gap provided in the magnetic circuit,
and a diaphragm coupled to the other end of the voice coil. A speaker comprising a frame
connecting the diaphragm and an outer peripheral surface of the magnetic circuit, wherein the
magnetic circuit includes a yoke having a concave shape, a magnet provided on the surface of the
recess, a peripheral surface of the magnet, and the magnetic circuit. It consists of the said
magnetic gap provided between the inner peripheral surface of a recessed part, and the top plate
provided in the surface of the said magnet, Comprising: Each of the 1st and 2nd lead wire of the
said voice coil is said A speaker led out to a back surface or a peripheral surface of the speaker
through a top plate, the yoke, and a first and a second conductive portion provided in any of the
frame. Also in the speaker of the internal magnet type is one having the same functions and
effects as claim 1 the above structure.
[0012]
The invention according to claim 3 of the present invention is the speaker according to claim 1
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or 2, wherein the first and second conductive parts are electrically insulated by an insulator, and
the insulator is provided. Thus, the first and second conductive parts can be provided on the
same part.
[0013]
The invention according to claim 4 of the present invention is the speaker according to claim 1
or 2, wherein the first and second lead wires are provided with a coating layer of an insulator,
and the first lead wire This has the effect of being able to prevent a short circuit with the second
lead wire.
[0014]
The invention according to claim 5 of the present invention is the speaker according to claim 1
or 2, wherein the first and second lead wires are tinsel wires, and high withstand voltage input is
enabled by the tinsel wires. It has an effect.
[0015]
In the invention according to claim 6 of the present invention, the connection portion between
the first and second lead wires and the first and second conductive portions is at least one of a
through hole and a recess. Item 2. The speaker according to item 2, wherein the connection area
between the lead wire and the conductive part can be increased by forming the connection part
as a through hole or a recess, and as a result, the function and effect of improving the connection
strength can be obtained. It is possessed.
[0016]
The invention according to claim 7 of the present invention is the speaker according to claim 6,
wherein a notch is provided in the opening of the through hole, and in particular, stressing the
lead wire at the opening by providing the notch. As a result, it is possible to reduce the breakage
of the lead wire.
[0017]
The invention according to claim 8 of the present invention is the speaker according to claim 6,
wherein a notch is provided at the corner of the recess, and in particular, the lead at the corner is
provided by providing the notch at the corner of the recess. It is possible to relieve the stress on
the wire, and as a result, it is possible to reduce the breakage of the lead wire.
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[0018]
The invention according to claim 9 of the present invention is the speaker according to claim 1
or 2, wherein a spring terminal is provided on the frame, and in particular, stable connection
with the set side is achieved by providing the spring terminal. Have the effect of being able to
[0019]
The invention according to claim 10 of the present invention is the speaker according to claim 1
or claim 2, wherein the conductive part is an attachment part to a set, and simplification and
reduction of wiring including the set side can be achieved. Have the following effects.
[0020]
The invention according to claim 11 of the present invention is the speaker according to claim
10, wherein the attachment portion is a spring terminal, and by using the attachment portion as
a spring terminal, stable connection with the set side can be achieved. In addition to the
operation and effect, it also has the operation and effect that stable power feeding can be
performed.
[0021]
The invention according to claim 12 of the present invention is the speaker according to claim
11, wherein the mounting portion is provided with the lock mechanism, and by providing the
lock mechanism, the attachment and connection with the set side can be improved. It has the
effect of being able to
[0022]
As described above, according to the present invention, in particular, the first and second lead
wires of the voice coil are connected to the speaker via the first and second conductive portions
provided on any of the upper plate, the lower plate, and the frame. The speaker is led to the back
surface or the peripheral surface of the speaker, and the terminal can be eliminated by the above
configuration, and as a result, cost reduction can be achieved.
[0023]
That is, by replacing the terminal to which the voice coil lead wire is connected, the terminal can
be eliminated, resulting in the cost of the terminal body, the production cost for connecting the
terminal to the frame, and the cost of this production facility. The cost resulting from the
terminal can be reduced.
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[0024]
Furthermore, regarding the wire connection, it is possible to eliminate the soldering by
considering the power supply structure with the set side, and as a result, it is possible to simplify
the wire connection including the set side.
[0025]
Hereinafter, the speaker of the present invention will be described using the embodiment and the
drawings.
[0026]
Embodiment 1 The inventions according to claims 1 and 5 of the present invention will be
described below using Embodiment 1 and FIG.
[0027]
FIG. 1 shows a cross-sectional view of the speaker in the first embodiment.
[0028]
According to FIG. 1, the frame 6 is coupled to the top plate 2 of the external magnetic circuit 4
configured by sandwiching the magnetized magnet 1a by the top plate 2 and the bottom plate
3a.
Then, a diaphragm 7 is adhered to the peripheral portion of the frame 6, and the voice coil 8
coupled to the diaphragm 7 is fitted into the magnetic gap 5 of the magnetic circuit 4.
The first lead wire 11 of the voice coil 8 is connected to the upper plate 2 which is a conductive
part, and the second lead wire 12 is connected to the lower plate 3a which is also a conductive
part.
Here, by using conductive parts as the upper plate 2 and the lower plate 3a, the upper plate main
body and the lower plate main body are respectively made into the first and second conductive
parts 18 and 19.
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With this configuration, the terminal can be eliminated by substituting the upper plate 2 and the
lower plate 3a as a terminal for receiving an electrical signal on the set side, and as a result, the
number of parts of the speaker can be reduced.
As the connection method of the voice coil 8, various methods such as soldering, bonding,
welding, crimping, caulking can be used.
[0029]
Moreover, as a connection position to the lower plate 3a of the 2nd lead wire 12, not only the
surface of a convex part but it is also possible to make it the surface of a non-convex part, for
example.
In this case, the following method is used.
That is, the second lead wire 12 can be positioned below the voice coil by using the one-layer or
three-layer winding configuration as the voice coil 8, so that it can be connected to the surface of
the non-convex portion.
[0030]
Not only copper wires generally used but also tinsel wires can be used as the lead wires 11 and
12.
In this case, there is an effect that high withstand voltage input is possible.
[0031]
The speaker according to the first embodiment is an external magnet type, and a ferrite type is
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generally used as the magnet 1a.
Therefore, the upper plate 2 and the lower plate 3a to which the lead wires 11 and 12 are
respectively connected are electrically insulated.
[0032]
However, in the case of using a magnet having conductivity, it is necessary to insulate the upper
plate 2 and the lower plate 3a.
The method and the like will be described in detail in the following embodiments and will not be
described here.
[0033]
As described above, according to the configuration of the first embodiment, terminals can be
eliminated, and as a result, cost reduction can be achieved.
[0034]
Furthermore, with regard to the wire connection, soldering can be eliminated by the power
feeding method with the set side, and as a result, the wire connection can be simplified.
For example, a method of providing a spring terminal (not shown) on the set side and bringing
the outer peripheral surface of the upper plate 2 and the peripheral surface or the back surface
of the lower plate 3a into contact to supply electric power may be mentioned.
[0035]
Second Embodiment The invention described in claim 1 will be further described with reference
to the second embodiment and FIG.
[0036]
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8
FIG. 2 is a cross-sectional view of the loudspeaker according to the second embodiment. The
difference from the first embodiment is that the first lead wire 11 of the voice coil 8 is connected
to the frame 6 and the main body of the frame 6 is first conductive. It is configured as a unit 18.
According to this configuration, since the connection with the set side is performed by the part
having a relatively large surface area such as the frame 6, it has an advantage of being easily
substituted as a terminal for receiving an electric signal.
[0037]
Since the configuration is the same as that of the first embodiment except for the above, the
description is omitted.
[0038]
Third Embodiment The inventions of claims 1 and 3 will be described with reference to the third
embodiment and FIG.
[0039]
The third embodiment differs from the first embodiment in that the second lead wire 12 is
connected to the frame 6 and the frame 6 main body is used as the second conductive portion,
and insulation is provided at the interface between the upper plate 2 and the frame 6 Since the
upper plate 2 and the frame 6 which are conductive parts are both coupled and electrically
conductive, they are provided with an insulator 13 such as an adhesive or a sealing agent at the
interface. Insulation is secured.
[0040]
Since the configuration is the same as that of the first embodiment except for the above, the
description is omitted.
[0041]
According to the above configuration, terminals can be eliminated by substituting the upper plate
2 and the frame 6 as terminals, and as a result, cost reduction can be achieved.
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[0042]
Fourth Embodiment The inventions of claims 1 and 9 will be described with reference to the
fourth embodiment and FIG.
[0043]
The fourth embodiment differs from the first embodiment in that a spring terminal 6a is
provided on the frame 6, and the connection between the speaker and the set can be stabilized
by the spring terminal 6a.
[0044]
Fifth Embodiment The invention according to claim 2 will be described below with reference to
the fifth embodiment and FIG.
[0045]
FIG. 5 shows a cross-sectional view of the loudspeaker according to the fifth embodiment,
wherein the first lead wire 11 of the voice coil 8 is connected to the upper plate 2, and the
second lead wire 12 is connected to the yoke 3, The plate 2 is configured as a first conductive
portion 18, and the yoke 3 is configured as a second conductive portion 19.
The fifth embodiment differs from the first embodiment in that the magnetic circuit 4 is
configured in an internal magnet type.
Accordingly, in the first embodiment, the yoke 3 corresponds to the lower plate 3 a in the fifth
embodiment.
In the first embodiment, since the magnetic circuit 4 is an external magnet type, the magnet 1a is
mostly a ferrite type which is a non-conductive material, and the upper plate 2 and the lower
plate 3a are electrically insulated. In general, the magnet 1 plated is generally used in many
cases, and the upper plate 2 and the yoke 3 are in a conductive state, and in this case, an
insulator 13 such as an adhesive or a sealing material is required.
In the fifth embodiment, a method of insulating the magnet 1 and the yoke 3 with a sealing
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material is used.
Since the sealing material is very thin, the performance of the magnetic circuit 4 is hardly
impaired, and the insulation can be reliably performed.
[0046]
As described above, according to the configuration of the fifth embodiment, the terminal can be
eliminated by substituting the upper plate 2 and the yoke 3 as a terminal for receiving an electric
signal. As a result, the number of parts of the speaker can be reduced. can do.
[0047]
In this case, as a method of supplying power to the yoke 3, a method of providing a spring
terminal on the set side to make contact and supplying power, and as a method of supplying
power to the upper plate 2, a needle-like terminal is provided from the set side If there is 7 or a
dust cap, it is possible to eliminate the soldering process by making the dust cap penetrate and
performing contact electric power feeding.
[0048]
The other configuration is the same as that of the first embodiment, and hence the description is
omitted.
[0049]
Sixth Embodiment The inventions according to the second and third aspects will be described
below with reference to the sixth embodiment and FIG.
[0050]
FIG. 6 shows a cross-sectional view of the speaker according to the sixth embodiment, wherein
the first lead wire 11 is connected to the frame 6 and the second lead wire 12 is connected to the
yoke 3 respectively, and the frame 6 is The conductive portion 18 and the yoke 3 are used as a
second conductive portion 19, and the yoke 3 and the frame 6 are electrically insulated.
The difference from the first embodiment is that the magnetic circuit 4 is configured as an
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11
internal magnet type, and in the first embodiment, the yoke 3 corresponds to the lower plate 3a
in the sixth embodiment. .
Further, the point different from the fifth embodiment is that the first lead wire 11 is connected
to the frame 6, and since both the yoke 3 and the frame 6 which are conductive parts are
coupled and electrically conductive, The interface is provided with an insulator 13 such as an
adhesive or a sealing material.
[0051]
As described above, according to the configuration of the sixth embodiment, terminals can be
eliminated by substituting the yoke 3 and the frame 6 as terminals for receiving electric signals,
and as a result, the reduction in the number of parts of the speaker is realized. be able to.
[0052]
The other configuration is the same as that of the first embodiment, and hence the description is
omitted.
[0053]
Seventh Embodiment The invention according to claims 2, 3 and 5 will be described below using
the seventh embodiment and FIG.
[0054]
FIG. 7 shows a cross-sectional view of the loudspeaker according to the seventh embodiment,
which is different from the loudspeaker according to the fifth embodiment in that the lead wire
11 of the voice coil 8 is used.
[0055]
The tinsel wire 14 of the voice coil 8 is connected to the upper plate 2 and the yoke 3 which are
conductive parts.
With this configuration, the input resistance can be dramatically improved by using the tinsel
wire 14, and the terminal can be eliminated by substituting the upper plate 2 and the yoke 3 as a
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terminal for receiving an electrical signal from the set side, A reduction in the number of parts of
the speaker and an increase in input resistance can be realized.
[0056]
The other configuration is the same as that of the fifth embodiment, and hence the description is
omitted.
[0057]
Eighth Embodiment The inventions of claims 2, 3 and 6 will be described below with reference to
the eighth embodiment and FIG.
[0058]
FIG. 8 shows a cross-sectional view of the loudspeaker according to the eighth embodiment. The
eighth embodiment is different from the fifth embodiment in that the through holes 15 are
provided in the frame 6 and the upper plate 2. is there.
[0059]
As described above, by providing the through holes 15, the connection area between the lead
wires 11 and 12 and the conductive portion (frame 6 or upper plate 2) can be increased, and as a
result, the connection strength can be improved. it can.
Furthermore, the productivity can be greatly improved.
[0060]
The other configuration is the same as that of the fifth embodiment, and hence the description is
omitted.
[0061]
Embodiment 9 The inventions of claims 2, 3, 6, and 8 will be described below using the present
embodiment 9 and FIG.
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[0062]
FIG. 9 shows a cross-sectional view of the loudspeaker according to the ninth embodiment, which
is different from the eighth embodiment in that a recess 16 is provided in the frame 6 and the
upper plate 2, The same operation and effect as those of the eighth embodiment can be achieved.
[0063]
The other configuration is the same as that of the eighth embodiment, and hence the description
is omitted.
[0064]
Tenth Embodiment The invention according to any one of claims 2 to 4, 6, and 7 will be
described below with reference to the tenth embodiment and FIG.
[0065]
FIG. 10 shows a cross-sectional view of the loudspeaker according to the tenth embodiment. The
tenth embodiment differs from the eighth embodiment in the openings of the through holes 15
provided in the frame 6 and the upper plate 2. The notch 17 is provided, and in particular, the
stress on the lead wires 11 and 12 at the corner can be alleviated by the notch 17, and as a
result, the breakage of the lead wire 11 can be reduced. .
[0066]
The other configuration is the same as that of the eighth embodiment, and hence the description
is omitted.
[0067]
Eleventh Embodiment The eleventh to twelfth aspects of the present invention will be described
with reference to the eleventh embodiment and FIGS. 11 to 14.
[0068]
FIG. 11 is a cross-sectional view of the loudspeaker of the eleventh embodiment, and in
particular, the lead-out portion is an attachment portion 6 a on the set side.
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This enables stable bonding with the set side.
[0069]
Further, FIG. 12 shows that this mounting portion 6a is made into a spring terminal, which
makes it possible to stably perform not only stable connection with the set side but also power
feeding.
The shape of the spring terminal 6a can be arbitrarily set according to the set side to which it is
attached.
[0070]
Further, as an example of the lock mechanism, FIG. 13 shows that this spring terminal 6a is
provided with a bar.
This return allows more stable power supply.
[0071]
The component provided with the attachment portion 6a is, for example, a structure in which a
conductive metal body is inserted into a resin frame, and obtained by inserting the metal body
when the resin frame is injection-molded. it can.
[0072]
In the above embodiment, the insulator 13 is provided to prevent a short circuit, and the portion
where the insulator 13 is provided is selected depending on the material to be formed.
[0073]
For example, when all of upper plate 2, magnet 1a and lower plate 3a in FIG. 1 have conductivity,
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15
insulator 13 is provided at the interface between upper plate 2 and magnet 1a or at the interface
between magnet 1a and lower plate 3a. Just do it.
Therefore, the site where the insulator 13 is provided is not limited to the site shown in the
embodiment.
[0074]
Although the first and second lead wires 11 and 12 are not identical to each other, as shown in
FIG. 14, both the first and second lead wires 11 and 12 are identical. It is also possible to connect
to the lower plate 3a.
In this case, using the insulating lower plate 3a, the first and second conductive portions 18, 19
made of, for example, plating or conductive resin are provided, and the first and second
conductive portions 18, 19 are formed. You just have to connect.
At this time, by providing the first and second lead wires 11 and 12 with a coating layer of the
insulator 13, a short circuit between the lead wires can be prevented.
As described above, the connection site of the first and second lead wires 11 and 12 is not
limited to the site shown in the embodiment.
[0075]
The speaker according to the present invention can be used for various audio devices and
information communication devices.
[0076]
The speaker according to the embodiment of the present invention is a sectional view, a sectional
view, a sectional view, a sectional view, a sectional view, a sectional view, a sectional view, a
sectional view, a sectional view, a sectional view, a sectional view, a sectional view, a sectional
view, a sectional view Figure Cross section of the conventional speaker same cross section
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Explanation of sign
[0077]
DESCRIPTION OF SYMBOLS 1 magnet 1a magnet 2 upper plate 3 yoke 3a lower plate 4 magnetic
circuit 5 magnetic gap 6 frame 6a attachment part 7 diaphragm 8 voice coil 11 first lead wire 12
second lead wire 13 insulator 14 tinsel wire 15 through hole 16 Recess 17 Notch 18 First
conductive portion 19 Second conductive portion
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