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JPH11164391

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DESCRIPTION JPH11164391
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker used for various audio equipment and a method of manufacturing the same.
[0002]
2. Description of the Related Art A conventional speaker will be described with reference to a
speaker with a baffle plate shown in FIG.
[0003]
Referring to FIG. 1, reference numeral 1 denotes a magnetic circuit, which includes an upper
plate 2, a ring-shaped magnet 3 and a lower plate 4.
A frame 5 is connected to the magnetic circuit 1, and the outer periphery of an edge portion 7 of
a cone-shaped diaphragm 6 is connected to the periphery of the frame 5.
[0004]
The lower part of the voice coil 8 is a voice coil embedded in the magnetic gap 1a of the
magnetic circuit 1. The voice coil 8 is coupled to the inner periphery of the diaphragm 6, and the
outer periphery is also coupled to the inner periphery of the damper 9 coupled to the frame 5.
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1
The voice coil 8 is held by the damper 9.
[0005]
A dust cap 10 is attached above the voice coil 8.
Reference numeral 11 denotes a baffle plate in which a gasket and a grill are integrally provided,
and a gasket portion 11a on the outer periphery of the baffle plate 11 is joined to the outer edge
of the edge portion 7 on the frame 5.
[0006]
In the above-described conventional speaker, since the baffle plate 11 in which the gasket and
the grill are integrated is used, a separate process for connecting the diaphragm 6 to the frame 5
is of course necessary. Like a general speaker, the diaphragm 6 can not be coupled to the frame
5 at the same time as the gasket, and the number of steps is increased even if the gasket and the
grill are integrated. However, because it takes an extra amount of
[0007]
The present invention solves the above-mentioned problems and aims to obtain the merit of
reducing the number of parts without increasing the number of assembling steps.
[0008]
SUMMARY OF THE INVENTION In order to solve the above problems, the speaker of the present
invention comprises a magnetic circuit, a frame coupled to the magnetic circuit, an outer
periphery coupled to the frame, and an inner periphery magnetic of the magnetic circuit. A grill
portion is integrally provided on a baffle plate having a diaphragm portion coupled to a
diaphragm coupled to a voice coil fitted in a gap and a coupling portion coupled to the frame
with the outer periphery of an edge portion of the diaphragm. Since the opening is provided at
the center of the speaker, the voice coil can be coupled to the diaphragm through the opening of
the baffle after the baffle is attached, and a conventional general speaker using a gasket alone
The speaker which also added the function of the grill with the same number of assembly steps
can be provided without an increase in the number of parts.
[0009]
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2
The invention according to claim 1 of the present invention comprises a magnetic circuit, a frame
coupled to the magnetic circuit, an outer periphery coupled to the frame, and an inner periphery
embedded in the magnetic gap of the magnetic circuit. A baffle having a gasket coupled to a
diaphragm coupled to a voice coil and a coupling section with the frame on the outer periphery
of the edge of the diaphragm, a grill integrally provided, and a central opening Since the baffle
plate and the diaphragm are attached to the frame, the voice coil can be coupled to the
diaphragm through the opening of the baffle plate, and the conventional general using a gasket
alone The function of the grill can also be added with the same number of assembly steps as the
speaker.
[0010]
According to the second aspect of the present invention, the rib is provided on the periphery of
the opening of the baffle plate according to the first aspect, and the strength of the baffle plate
can be improved.
[0011]
According to the third aspect of the present invention, after the diaphragm and the baffle plate
are coupled to the frame, the voice coil and the inner periphery of the diaphragm are coupled to
each other through the opening of the baffle plate. By making the manufacturing method to be, it
is possible to provide a speaker to which a function of a grill is also added with the same number
of assembling steps as a conventional general speaker using a single gasket, without an increase
in the number of parts.
[0012]
Hereinafter, an embodiment of the speaker of the present invention will be described with
reference to FIGS. 1 and 2. FIG.
The same parts as in the prior art will be assigned the same reference numerals and explanations
thereof will be omitted.
[0013]
(First Embodiment) FIG. 1 (a) is a cross-sectional view of a loudspeaker according to the present
invention, and FIG. 1 (b) is a top view thereof.
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[0014]
According to the drawing, reference numeral 12 denotes a baffle plate having a gasket portion
12a at the periphery and an opening 12c having a diameter larger than at least the voice coil 8 at
the center.
Reference numeral 12 b denotes a grill portion of the baffle plate 12.
[0015]
In the speaker configured as described above, after the diaphragm 6 and the baffle plate 12 are
coupled to the frame, the voice coil 8 is fitted into the magnetic gap 1a of the magnetic circuit 1,
and the voice coil 8 and the inner periphery of the diaphragm 6 are coupled. Therefore, the
speaker assembly work can be performed as if it were a conventional speaker with a single
gasket, and a speaker having the grille portion 12b according to the present invention can be
provided without increasing the number of parts and the number of assembly steps.
[0016]
Second Embodiment Another embodiment of the speaker according to the present invention will
be described with reference to FIGS. 2 (a) and 2 (b).
Fig.2 (a) is sectional drawing of other embodiment of the speaker of this invention, FIG.2 (b) is
the top view.
The difference from the embodiment is that a rib 12 d is provided on the periphery of the
opening 12 c of the baffle plate 12.
By providing the rib 12d, the strength in the vicinity of the opening 12c of the baffle plate 12 is
improved.
[0017]
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As described above, according to the speaker of the present invention, since the opening is
provided at the center of the baffle plate integrally provided with the gasket portion and the grill
portion, the voice after connecting the diaphragm and the baffle plate to the frame The coil can
be embedded in the magnetic gap of the magnetic circuit, and then the voice coil and the inner
periphery of the diaphragm can be coupled, and the assembly operation of the speaker can be
performed as if it were a conventional speaker by itself using a gasket. It can be provided without
increasing the number of parts and the number of assembly steps.
[0018]
Brief description of the drawings
[0019]
FIG. 1 (a) is a cross-sectional view of an embodiment of the speaker according to the present
invention
[0020]
FIG. 2 (a) is a sectional view of the other embodiment.
[0021]
Fig.3 (a) Cross-sectional view of the conventional speaker
[0022]
Explanation of sign
[0023]
DESCRIPTION OF SYMBOLS 1 Magnetic circuit 1a Magnetic gap 5 Frame 6 Diaphragm 7 Edge
part 8 Voice coil 9 Damper 12 Baffle board 12a Gasket part 12b Grill part 12c Opening part 12d
Rib
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