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JPH08163690

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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 JPH08163690
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
support member for supporting a diaphragm of component parts of a speaker unit, for example,
an adhesive structure to an edge portion of the diaphragm and a frame of a damper portion.
[0002]
2. Description of the Related Art The adhesive structure of a conventional speaker will be
described with reference to FIG. FIG. 7 is a cross-sectional view showing the bonding structure of
the speaker. A speaker 80 comprises a magnetic circuit unit, a vibration unit, a frame, and the
like. In the present description, the vibration part and the frame will be mainly described.
[0003]
The vibrating portion is constituted by a diaphragm (body) 81, a voice coil 83, a voice coil bobbin
84 and the like. The diaphragm 81 radiates vibration converted into mechanical vibration from
the electrical input signal inputted to the voice coil 83 as sound according to the input signal,
and pulp, resin or the like is used as the material. The central portion of the diaphragm 81 is
bonded and fixed to one end of the cylinder of the voice coil bobbin 84, the outer peripheral
portion is bonded to the inner peripheral portion of the edge 82, and the outer peripheral portion
of the edge 82 is bonded and fixed to the frame 86. In the voice coil bobbin 84 to which the
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diaphragm 81 is fixed, the outer periphery of the voice coil bobbin 84 is bonded to the inner
peripheral portion of the damper 85, and the outer peripheral portion of the damper 85 is
bonded to the frame 86. Is suspendedly connected and fixed by the edge 82 and the damper 85.
[0004]
The edge 82 is a support member of the diaphragm 81 and has an annular shape, and the inner
peripheral portion is adhesively fixed to the outer peripheral portion of the diaphragm 81, and
the outer peripheral portion is adhesively fixed to the frame 86. ing. In addition, a sea light etc.
are used for a material. The voice coil bobbin 84 is formed in a cylindrical shape by using a light
member such as paper, resin, or aluminum, and a thin wire such as insulated copper or
aluminum is wound around the outer periphery of the cylinder to form a voice coil 83.
[0005]
The damper 85 is a support member for supporting the diaphragm 81 so that the diaphragm 81
moves following the vibration of the voice coil bobbin 84 and has a wave-like annular shape, and
the inner peripheral portion is the outer periphery of the voice coil bobbin 84 and the damper
The outer peripheral portion of 85 is adhesively fixed to the frame 86. Resin, blended yarn, etc.
are used for the material. The frame 86 is a member for holding the magnetic circuit portion and
the vibration portion, and holds the vibration portion inside the frame 86, and the magnetic
circuit portion is adhesively fixed to the rear (lower side in the drawing). As a material, a rolled
steel plate, an aluminum die cast, a resin material, etc. are used.
[0006]
Next, assembly (related bonding process) will be described. First, an adhesive is applied to the
bonding surface of the frame 86 with the damper 85, and the inner peripheral portion (neck
portion) of the damper 85 is inserted through the voice coil bobbin 84 to which the voice coil 83
is attached in advance. The voice coil bobbin 84 is installed at a predetermined position (gap
portion) of the magnetic circuit using a positioning gauge. Then, the outer peripheral bonding
surface of the damper 85 is pressed and bonded to the bonding portion 88 of the frame 86
coated with the adhesive. Next, an adhesive is applied and adhered to the inner peripheral
portion of the damper 85.
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[0007]
Next, an adhesive is applied to the bonding surface 90 to the edge 82 of the frame 86, and the
voice coil bobbin 84 is inserted into the inner peripheral portion (neck portion) of the diaphragm
81, and the edge bonded to the outer peripheral portion of the diaphragm 81 The adhesive
surface 91 of the outer periphery of the sheet 82 is pressed and adhered. Next, an adhesive is
applied to the inner peripheral portion of the diaphragm 81 and adhered.
[0008]
However, in the bonding structure of the above-mentioned speaker, the edge 82 supporting the
diaphragm 81 and the bonding surfaces 90 and 88 of the damper 85 and the frame 86 are
bonded in a planar manner. In the worst case, the adhesive parts 88 and 90 peel off during
operation, and the diaphragm 81 does not work as it should, and the speaker performance is
significantly deteriorated. It was happening.
[0009]
Then, this invention solves the above-mentioned problem, and it aims at providing the adhesion
structure for strengthening the adhesive strength of the said adhesion part.
[0010]
SUMMARY OF THE INVENTION The present invention achieves the above-mentioned object, and
provides a bonding structure of a speaker in which a supporting member for supporting a
diaphragm of a speaker and a frame are bonded by an adhesive. An adhesion hole is formed in an
adhesion portion, and the adhesion between the support member and the frame allows the
adhesive to pass through the adhesion hole and wrap around the adhesion surface back surface
of the support member.
[0011]
Further, a convex portion is provided upright on the bonding surface of the frame with the
support member, and the adhesive hole formed in the support member is inserted into the
convex portion to increase the area in which the adhesive wraps around.
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Further, after bonding the frame and the support member, the convex portion is deformed to
form a crimped portion, and the support member is fixed to the frame.
[0012]
Further, in the bonding structure of the speaker in which the supporting member for supporting
the diaphragm of the speaker and the frame are bonded with an adhesive, a convex portion is
erected on the outer peripheral portion of the bonding surface of the frame to the supporting
member. After bonding the supporting member, the convex portion is deformed to form a
crimped portion, and the supporting member is fixed to the frame.
[0013]
Further, in the bonding structure of the speaker in which the support member supporting the
diaphragm of the speaker and the frame are bonded by an adhesive, a screw hole is formed in
the bonding portion of the frame to the support member, and the bonding portion of the support
member A mounting hole is formed in alignment with a screw hole position of the frame, and
after bonding the frame and the support member, the mounting hole and the screw hole are
screwed with each other by screws.
[0014]
According to the present invention, the adhesive in the bonding portion between the support
member and the frame passes through the bonding hole provided in the bonding portion of the
support member and wraps around the bonding surface back surface of the support member,
and the adhesive is The adhesive strength is increased because the support member is adhesively
fixed in a state of being sandwiched from both sides.
[0015]
According to the second aspect of the present invention, when the adhesive hole formed in the
support member is inserted through and adhered to the convex portion provided on the adhesive
surface of the frame, the adhesive passes through the adhesive hole and adheres to the back
surface of the adhesive surface of the support member. At the same time, it also adheres to the
outer periphery of the convex portion, thereby increasing the adhesion area and the adhesion
strength.
According to the third aspect of the present invention, the bonding hole formed in the support
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member is inserted into the convex portion provided upright on the bonding surface of the
frame, and after bonding, the convex portion is deformed to form the crimped portion. And the
adhesion is reinforced.
[0016]
According to the fourth aspect of the present invention, the outer peripheral portion of the
support member is formed by deforming the convex portion erected on the outer peripheral
portion of the bonding surface of the frame to the support member after bonding the frame and
the support member. And the adhesion is reinforced.
According to the fifth invention, since the support member is screwed to the frame after bonding
the frame and the support member, the adhesion is reinforced.
[0017]
A first embodiment of the present invention will be described with reference to FIG.
FIG. 1 is an adhesive structure diagram of a speaker, where (a) is a cross-sectional view, (b) is a
plan view of a round hole of an adhesive part, and (c) is a plan view of a cutout of an outer
periphery of the adhesive part.
A speaker 10 is composed of a magnetic circuit unit, a vibration unit, a frame, and the like.
In the description of the present invention, vibration parts and frames that are directly related
will be mainly described. The same reference numerals as in the first embodiment denote the
same parts as in the first embodiment, and a description thereof will be omitted.
[0018]
The vibrating portion is constituted by a diaphragm (body) 11, a voice coil 13, a voice coil bobbin
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14 and the like. The diaphragm 11 radiates vibration converted into mechanical vibration from
the electrical input signal inputted to the voice coil 13 as sound according to the input signal,
and pulp, resin or the like is used as the material. The central portion of the diaphragm 11 is
bonded and fixed to one end of the cylinder of the voice coil bobbin 14, the outer peripheral
portion is bonded to the inner peripheral portion of the edge 12, and the outer peripheral portion
of the edge 12 is bonded and fixed to the frame 16. Further, in the voice coil bobbin 14 to which
the diaphragm 11 is fixed, the outer periphery of the voice coil bobbin 14 is bonded to the inner
peripheral portion of the damper 15, and the outer peripheral portion of the damper 15 is
bonded to the bonded portion 22 of the frame 16. The diaphragm 11 is connected and fixed in a
suspended state by the edge 12 and the damper 15.
[0019]
The edge 12 is a support member of the diaphragm 11 and has an annular shape, the inner
peripheral portion is adhesively fixed to the outer peripheral portion of the diaphragm 11, the
outer peripheral portion is adhesively fixed to the frame 16, and the diaphragm 11 is supported.
ing. In the edge 12, a round hole 17 is formed on the circumference of the bonding portion with
the frame 16 or a notch hole 18 or the like is formed on the outer periphery. In addition, a sea
light etc. are used for a material.
[0020]
The voice coil bobbin 14 is made of a light material such as paper, resin, or aluminum and has a
cylindrical shape, and a thin wire such as copper or aluminum whose surface is insulated is
wound around the outer periphery of the cylinder to form the voice coil 13. The damper 15 is a
support member that supports the diaphragm 11 so that the diaphragm 11 moves following the
vibration of the voice coil 13. The damper 15 has a wave-like annular shape, and the inner
periphery is the outer periphery of the voice coil bobbin 14 and the outer periphery Are
adhesively fixed to the frame 16. A round hole 19 or a notch hole 20 or the like is formed on the
outer periphery of the bonding portion with the frame 16. In addition, resin, a blend, etc. are
used for a material.
[0021]
The frame 16 is a member for holding the magnetic circuit portion and the vibration portion. The
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vibration portion is held inside the frame 16 and the magnetic circuit portion is adhesively fixed
to the rear portion (the lower side in the drawing). As a material, a rolled steel plate, an
aluminum die cast, a resin material, etc. are used. Next, assembly (related bonding process) will
be described. First, an adhesive is applied to the bonding surface of the frame 16 with the
damper 15, and the inner peripheral portion (neck portion) of the damper 15 is inserted through
the voice coil bobbin 14 to which the voice coil 13 is attached in advance at a predetermined
position. The voice coil bobbin 14 is installed at a predetermined position (gap portion) of the
magnetic circuit using a positioning gauge. Then, the outer peripheral bonding surface of the
damper 15 is pressed and bonded to the bonding portion 22 of the frame 16 to which the
adhesive is applied. Next, an adhesive is applied and adhered to the inner peripheral portion of
the damper 15 and the bonding portion 21 of the voice coil bobbin 14.
[0022]
Next, an adhesive is applied to the bonding surface of the frame 16 with the edge 12, and the
voice coil bobbin 14 is inserted into the inner peripheral portion (neck portion) of the diaphragm
11, and the edge 12 bonded to the outer peripheral portion of the diaphragm 11 Press and bond
the adhesive surface of the outer circumference of. Next, an adhesive is applied and adhered to
the inner peripheral portion of the diaphragm 11 and the bonding portion 23 of the voice coil
bobbin 14. Thereafter, the adhesive is sufficiently dried, and wiring work such as soldering is
performed.
[0023]
As described above, according to this embodiment, the adhesive 26 is closer to the periphery of
the rear side of the adhesive surface than the adhesive surface from the round holes 17 and 19
or the notch holes 18 and 20 provided in the adhesive portion of the edge 12 and the damper 15
Since the adhesive 26 is adhesively fixed in a state of sandwiching the edge 12 and the damper
15, the adhesive strength is enhanced and an accident such as peeling of the adhesive portions
22 and 24 can be prevented during the operation of the speaker. . In this embodiment, the round
holes 17 and 19 are provided on the circumference of the bonding portion of the edge 12 and
the damper 15, and corner notch holes 18 and 20 are provided on the outer peripheral portion.
The shape of the holes and the number of holes may be determined according to the size and
output of the speaker.
[0024]
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Next, a second embodiment will be described with reference to FIG. FIG. 2 is a bonding structure
view of the speaker, (a) is a cross-sectional view, and (b) is a plan view of a convex portion of the
bonding portion. In the second embodiment, a part of the frame 16 of the first embodiment is
modified, and the other parts are substantially the same as the first embodiment. A frame 30 has
cylindrical projections 33 and 34 erected on the bonding surfaces 31 and 32 of the edge 12 and
the damper 15, respectively. As the material, resin or aluminum die casting is used, and it is
formed by molding processing or the like.
[0025]
Next, differences from the assembly of the first embodiment will be additionally described. In the
second embodiment, the bonding portion is pressed and bonded to the convex portions 33 and
34 provided on the frame 30 in a state where the round holes 17 of the edge 12 and the round
holes 19 of the damper 15 are inserted. Therefore, the same effect as that of the first
embodiment can be obtained also in the second embodiment, but the adhesion area can be
increased and the adhesion strength can be further increased by additionally providing the
convex portion in the bonding portion.
[0026]
A third embodiment will now be described with reference to FIG. FIG. 3 is an adhesive structure
diagram of the speaker, where (a) is a cross-sectional view and (b) is a plan view of the claw-like
convex portion of the adhesive portion. In the third embodiment, a part of the frame 30 of the
second embodiment is modified, and the others are substantially the same as the second
embodiment including the assembly. 40 is a frame, and claw-like convex portions 41 and 42 are
provided upright on the bonding surface with the edge 12 and the damper 15. A steel plate or
the like is used as the material and is formed by press processing or the like.
[0027]
Next, differences from the assembly of the second embodiment will be additionally described. In
the third embodiment, with the square holes 43 of the edge 12 and the square holes 44 of the
damper 15 being inserted into the claws 41 and 42 provided on the frame 40, the bonded
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portion is pressed and bonded. Accordingly, also in the third embodiment, the bonding area can
be increased and the bonding strength can be increased as in the second embodiment.
[0028]
Next, fourth and fifth embodiments will be described with reference to FIG. 4A and 4B are
adhesive structure diagrams of the speaker, wherein FIG. 4A is a sectional view of a convex
portion added processing portion of the fourth embodiment, FIG. FIG. 7 is a cross-sectional view
of a claw-shaped convex portion added processing portion of the embodiment, and FIG. 7 (d) is a
plan view of the claw-shaped convex portion added processing portion of the fifth embodiment.
In the fourth embodiment, the convex portion of the second embodiment is added, and in the
fifth embodiment, the claw-shaped convex portion of the third embodiment is subjected to
additional processing (expansion or bending of the tip end portion). Is substantially the same as
in the second and third embodiments.
[0029]
Next, additional processing of assembly will be described. In the fourth embodiment, the round
holes 17 of the edge 12 and the crimped portions 35, 36 in which heat is applied to the
cylindrical convex portions 33, 34 of the frame 30 molded with the resin agent to soften and
deform by pressure are used. The periphery of the round hole 19 of the damper 15 is fixed (FIG.
4 (b)). Further, the frame 30 formed by aluminum die-casting is the crimped portions 35, 36
obtained by pressing and deforming the cylindrical convex portions 33, 34, and the peripheries
of the round hole 17 of the edge 12 and the round hole 19 of the damper 15 are Crimp (Figure 4
(b)).
[0030]
In the fifth embodiment, the crimped portions 45 and 46 formed by bending and deforming the
claw-like convex portions 41 and 42 of the frame 40 formed of steel plates are around the
rectangular holes 43 of the edge 12 and the rectangular holes 44 of the damper 15. Crimp
(Figure 4 (d)). Therefore, according to the fourth embodiment, the crimped portions 35, 36
obtained by deforming the convex portions 33, 34 crimps around the hole 17 of the edge 12 and
the hole 19 of the damper 15. Further, according to the fifth embodiment, since the crimping
portions 45 and 46 obtained by bending and deforming the claw-like convex portions 41 and 42
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respectively crimp the hole 43 of the edge 12 and the periphery of the hole 44 of the damper 15,
adhesive strength Is reinforced.
[0031]
Next, the sixth and seventh embodiments will be described with reference to FIG. FIG. 5 is an
adhesive structure diagram of the speaker, where (a) is a cross-sectional view showing the
erected state of the convex portion in the sixth embodiment, (b) is a plan view after the convex
portion deformation in the sixth embodiment, (c) FIG. 14 is a cross-sectional view showing the
standing state of the claw-shaped convex portion in the seventh embodiment, and FIG. 24 (d) is a
plan view after bending of the claw-shaped convex portion in the seventh embodiment. The sixth
embodiment has the convex portion of the fourth embodiment, and the seventh embodiment has
a change in the standing position of the claw-shaped convex portion of the fifth embodiment, and
the other is the fourth and fifth embodiments. It is almost the same as the example. The assembly
is also substantially the same as in the fourth and fifth embodiments, so only the differences will
be described.
[0032]
In the sixth embodiment shown in FIGS. 5 (a) and 5 (b), reference numeral 50 denotes a frame, in
which cylindrical convex portions 51 and 52 stand on the outer peripheral portions 53 and 54 of
the bonding surface with the edge 12 and the damper 15. It is done. As the material, resin or
aluminum die casting is used, and it is formed by molding processing or the like. Further, in the
seventh embodiment shown in FIGS. 5 (c) and 5 (d), 55 is a frame, and claws 56 and 57 stand on
the outer peripheral portions 53 and 54 of the bonding surface with the edge 12 and the damper
15, respectively. It is set up. A steel plate or the like is used as the material and is formed by
press processing or the like.
[0033]
Next, assembly will be described. In the sixth embodiment, the edge 12 and the crimped portion
58, 59 (not shown) are formed by applying heat to the cylindrical convex portions 51, 52 of the
frame 50 molded with the resin agent to soften and pressurize them. The outer peripheral
portion of the damper 15 is fixed (FIG. 5 (b)). Further, in the frame 50 formed by aluminum die
casting, the convex portions 51 and 52 are pressure-deformed to press-bond the edge 12 and the
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outer peripheral portion of the damper 15 (FIG. 5 (b)).
[0034]
In the seventh embodiment, the claws 56 and 57 of the frame 55 formed of steel plate are bent
and deformed, and the edge 12 and the outer peripheral portion of the damper 15 are crimped
(FIG. 5 (d)). Therefore, also in the sixth embodiment, the crimping portions 58 and 59 (not
shown) in which the convex portions 51 and 52 are deformed as in the fifth embodiment crimp
the edge 12 and the outer peripheral portion of the damper 15. Also in the seventh embodiment,
since the crimped portions 60, 61 (not shown) formed by bending and deforming the clawshaped convex portions 56, 57 respectively crimp the edge 12 and the outer peripheral portion
of the damper 15, the adhesive strength is reinforced. Be done.
[0035]
An eighth embodiment will now be described with reference to FIG. FIG. 6 is a bonding structure
view of the speaker, in which (a) is a cross-sectional view and (b) is a plan view of a screwing
portion. 65 is a frame, and screw holes 68 and 69 are formed in the bonding surfaces 66 and 67
with the edge 12 and the damper 15, respectively. A steel plate, resin or aluminum die casting is
used as the material, and it is formed by press working, forming work, or the like.
[0036]
Reference numerals 70 and 73 denote crimped members, which are annular and have mounting
holes 71 and 74 formed therein. The edge 12 and the damper 15 are pressed against the frame
65 for screw pressure bonding, and a resin material, a steel plate or the like is used as the
material. Reference numeral 72 denotes a screw for screwing the crimping members 70 and 73
to the frame 65.
[0037]
Next, assembly will be described. First, an adhesive is applied to the bonding surface of the frame
65 with the damper 15, and the inner peripheral portion (neck portion) of the damper 15 is
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inserted through the voice coil bobbin 14 in which the voice coil 13 is attached in advance at a
predetermined position. Then, the voice coil bobbin 14 is installed at a predetermined position
(gap portion) of the magnetic circuit using a positioning gauge. At this time, the positions of the
holes 19 of the damper 15 and the screw holes 69 of the frame 65 are aligned, and the outer
peripheral bonding surface of the damper 15 is pressed against the bonding portion 66 of the
frame 65 coated with the adhesive. Thereafter, the mounting holes 71 of the crimping member
70 are aligned with the positions of the screw holes 69 of the frame 65, and the screws 72 are
inserted from the crimping member 70 side and screwed and fixed. Then, an adhesive is applied
and adhered to the inner peripheral portion of the damper 15 and the adhesion portion 21 of the
voice coil bobbin 14.
[0038]
Next, an adhesive is applied to the bonding surface of the frame 65 with the edge 12, and the
voice coil bobbin 14 is inserted into the inner peripheral portion (neck portion) of the diaphragm
11, and the edge 12 bonded to the outer peripheral portion of the diaphragm 11 Press and bond
the adhesive surface of the outer circumference of. Then, at the time of bonding, the positions of
the holes 17 formed in the bonding portion 25 on the outer periphery of the edge 12 and the
screw holes 68 of the frame 65 are aligned. According to the position of the screw hole 68, the
screw 72 is inserted from the side of the pressure bonding member 73 and fixed by screwing.
Thereafter, the adhesive is sufficiently dried, and wiring work such as soldering is performed.
[0039]
As described above, according to this embodiment, since the entire surfaces of the bonding
surfaces 66 and 67 of the frame 65 and the edge 12 and the damper 15 are crimped and fixed,
the accident such as peeling of the bonding part is eliminated and the quality of the speaker
Reliability improves. In the present embodiment, annular pressure-bonding members 70 and 73
are used, but a washer may be used for the screwing portion. In addition, if the screwing point is
considered, adhesion becomes unnecessary.
[0040]
As described above, according to the adhesive structure of the speaker of the present invention,
the adhesion between the support member and the frame is enhanced. Therefore, an accident
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such as peeling of the support member from the frame can be prevented, and the quality and
reliability of the speaker can be improved.
[0041]
Brief description of the drawings
[0042]
1 is a bonding structure diagram of the speaker showing the first embodiment of the present
invention, (a) is a cross-sectional view, (b) is a plan view of the round hole portion of the bonding
portion, (c) is a notch hole portion of the bonding portion outer periphery It is a top view.
[0043]
2 is a bonding structure diagram of the speaker showing a second embodiment of the present
invention, (a) is a cross-sectional view, (b) is a plan view of the convex portion of the bonding
portion.
[0044]
3 is an adhesive structure diagram of a speaker according to a third embodiment of the present
invention, (a) is a cross-sectional view, (b) is a plan view of the claw-like convex portion of the
adhesive portion.
[0045]
4 is an adhesive structure diagram of the speaker showing the fourth and fifth embodiments of
the present invention, (a) is a cross-sectional view of the convex portion additional processing
portion of the fourth embodiment, (b) is a convex portion addition of the fourth embodiment FIG.
7C is a plan view of a processed portion, FIG. 7C is a cross-sectional view of a claw-shaped
convex portion processing portion according to the fifth embodiment, and FIG.
[0046]
5 is an adhesive structure diagram of the speaker showing the sixth and seventh embodiments of
the present invention, (a) is a sectional view showing the erected state of the convex portion of
the sixth embodiment, (b) is a sixth embodiment of the present invention (C) is a cross-sectional
view showing the standing state of the claw-like convex part of the seventh embodiment, (d) is a
plan view after bending the claw-like convex part of the seventh embodiment. .
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[0047]
6 is an adhesive structure diagram of the speaker showing the eighth embodiment of the present
invention, (a) is a cross-sectional view, (b) is a plan view of a screwed portion.
[0048]
7 is a cross-sectional view showing the adhesive structure of the conventional speaker.
[0049]
Explanation of sign
[0050]
10: Speaker 11: Diaphragm 13: Voice coil 14: Voice coil bobbin 15: Damper 16, 30, 40, 50, 55,
65 · Frames 33, 34 · · Convex portions 41, 42 · · · Claw shaped convex portions
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