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JPH10136486

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DESCRIPTION JPH10136486
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker used in various audio equipment.
[0002]
2. Description of the Related Art The prior art will be described with reference to the
loudspeakers shown in FIGS. 2 is a side sectional view and FIG. 3 is a top view.
[0003]
According to the figure, 1 is a metal frame of the speaker, and when the speaker is incorporated
in an enclosure (not shown), a bent portion 1A is provided on the outer peripheral portion to
improve the appearance quality of the visible portion seen from the outside. Furthermore, the
visible part is painted.
[0004]
The magnetic circuit 2 is coupled to the frame 1 and the diaphragm 3 is coupled to the outer
peripheral portion, and the voice coil 5 fitted to the magnetic gap 4 of the magnetic circuit 2 is
coupled to the central portion of the diaphragm 3 A resin gasket 6 for improving appearance
quality is joined to the front outer periphery of the frame 1, and airtightness with the enclosure
is secured on the rear outer periphery of the frame 1, and moreover, the billet of the enclosure
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and the frame 1 is prevented. The back cushion 7 was adhered.
[0005]
However, the conventional loudspeaker of this type is produced at the time of production of the
frame 1 by coating the bent portion 1A to the outer peripheral portion of the frame 1 for
improving the appearance quality and the visible portion. The number of steps is increased, and a
resin gasket 6 for improving the appearance quality is required on the outer periphery of the
front of the frame 1, and a back cushion 7 for ensuring air tightness and for preventing flicker is
required on the outer periphery of the rear of the frame 1. However, considering the number of
production steps to combine them, it was not possible to achieve cost reduction.
[0006]
In addition to the above-mentioned production process, the frame 1 coated with the bending
portion 1A and the visible portion also frequently suffers from poor quality due to deformation of
the outer peripheral portion of the frame 1 and coating peeling during transportation of single
frame 1 products. The loss cost due to the deterioration of yield is also large, and the cost can not
be reduced.
[0007]
An object of the present invention is to solve such conventional problems, and to provide an
excellent speaker capable of achieving cost reduction by reducing the number of production
steps and improving the quality.
[0008]
SUMMARY OF THE INVENTION In order to solve the above problems, the loudspeaker of the
present invention comprises a magnetic circuit, a metal frame coupled to the top of the magnetic
circuit, an outer periphery coupled to the frame, and an inner periphery The diaphragm
comprises a diaphragm coupled to a voice coil fitted in the magnetic gap of the magnetic circuit,
and at least a front gasket or a rear cushion of the outer periphery of the frame integrally
provided on the frame by injection molding. The cost of processing the outer periphery of the
frame and the cost of painting the frame of the visible part can be reduced, and / or the back
cushion can be reduced.
[0009]
The invention according to claim 1 of the present invention is a magnetic circuit, a metal frame
coupled to the upper portion of the magnetic circuit, an outer periphery coupled to the frame,
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and an inner periphery of the magnetic circuit. A diaphragm coupled to a voice coil fitted into the
magnetic gap of the frame, and a gasket or a cushion on the front surface of at least the outer
periphery of the frame integrally provided on the frame by injection molding to process the outer
periphery of the frame As well as reducing the painting cost of the frame of the visible part and /
or reducing the back cushion which is a separate part, it is possible to provide a speaker without
fear of paint peeling off and the like.
[0010]
The invention according to claim 2 of the present invention is that the gasket or cushion
according to claim 1 is a molded article of ABS resin, and flexibility is also ensured as a molded
article of ABS resin, and the gasket and back cushion are the same resin To reduce the number of
parts and the number of assembling steps.
[0011]
Hereinafter, an embodiment of a speaker according to the present invention will be described
with reference to FIG.
FIG. 1 is a side sectional view of the loudspeaker according to one embodiment, and to explain
only the difference from the prior art of FIG. It is a resin molding part, and it comprises a gasket
part 8B provided on the outer periphery of the frame and a rear cushion part 8C provided on the
rear surface of the frame, similar to the frame outer peripheral design part 8A for improving
appearance quality provided on the outer periphery of the frame 1. , And are formed so as to
wrap the outer periphery of the frame 1.
[0012]
As described above, in the above embodiment, since the resin molding portion 8 is integrally
provided on the metal frame 1, reduction of the processing cost of the conventional frame, the
coating cost of the visible part, and the number of assembling steps are achieved. Thus, it is
possible to provide an excellent speaker without fear of paint peeling and the like.
[0013]
In the above embodiment, the resin molded portion 8 is provided with the frame outer peripheral
design portion 8A, the gasket portion 8B, and the back cushion portion 8C, but depending on the
mounting condition to the enclosure (not shown) It is also possible that the resin molding portion
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8 is formed by one.
[0014]
As described above, the present invention integrates the gasket and / or the cushion by injection
molding on the frame outer periphery, thereby reducing the processing cost of the frame outer
periphery and the painting cost of the frame of the visible portion and / or separate parts. The
back cushion can be reduced.
[0015]
Brief description of the drawings
[0016]
1 is a side sectional view of a speaker according to an embodiment of the present invention
[0017]
Fig. 2 A side sectional view of a conventional speaker
[0018]
Figure 3 same plan
[0019]
Explanation of sign
[0020]
1 frame 2 magnetic circuit 3 diaphragm 4 magnetic gap 5 voice coil 6 gasket 7 back cushion 8
resin molded portion 8A frame outer peripheral design portion 8B gasket portion 8C back
cushion portion
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