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JPS54151334

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DESCRIPTION JPS54151334
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a half sectional view showing a general
loudspeaker, FIG. 2 is a sectional view of the main part of a conventional loudspeaker, and FIG. 3
is a schematic showing one embodiment of the loudspeaker of the present invention. 4 is a top
view of the gasket used for the speaker, FIG. 5 is a front view of the same half section, FIG. 6 is a
top view showing the gasket of another embodiment, and FIG. 7 is FIG. A-0-B sectional drawing of
FIG. 8, FIG. 8, FIG. 9 is principal part sectional drawing of the speaker of other Example. 1 · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · diaphragm, 9 · · · · voice coil,
11 · · · ----- magnetic gap 13 ...... adhesive, 14 ...... rising portion, 15 ... ... groove, 16 ... ... ridge, 18
..... Engaging piece, 20 ..... Engaging window.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker with an
improved degree of coupling and improved appearance quality by improving the frame and the
gasket. In general, the speaker is constructed as shown in FIG. 1. The plate 2 with a center pole 1
and a ring-shaped magnet 3 as well as a ring-shaped upper plate 1φ 1 2 -g shaped. The frame 6
is coupled to the magnetic circuit 5 constituted by 4, and the edge of the diaphragm 8 is adhered
with an adhesive to the peripheral portion of the frame 6 together with the gasket 7, and the
voice coil 9 is coupled to the central portion of the diaphragm 8 The intermediate portion of the
voice coil 9 is held by the damper 10 and fitted into the magnetic gap 11 of the magnetic circuit
5 without eccentricity, and the dust cap 12 is attached to the upper surface of the central portion
of the moving plate 8. I'm lying. In such a speaker, although what was conventionally comprised
with chip ball etc. as gasket 7 was used, a design also becomes a sales point and the appearance
quality has been close up recently in the speaker. From such a thing, the ring-shaped gasket
which used soft rubber and resin as a material instead of the conventional chip ball gasket is
mainly used. However, as shown in FIG. 2, even if the edge of the diaphragm 8 and the gasket 7
are attached to the peripheral portion of the frame 6 with the adhesive 13, the adhesive strength
is weak, and the □□! 3, -1-Peeling off due to adhesion failure and external stress, there is a
12-05-2019
1
quality problem that chatter occurs as a speaker. The present invention eliminates the abovementioned conventional drawbacks. An embodiment of the present invention will now be
described with reference to FIGS. Here, since the structure of the entire speaker is the same as
that shown in FIG. 1, the structure of the frame peripheral edge and the gasket, which are the
features of the present invention, will be described. First, in FIG. 3, a recessed groove 15 is
formed in the lower inner wall of the rising portion 14 in the peripheral portion of the frame 6,
and the outer fI of the gasket 7 formed in a ring shape by soft rubber or synthetic resin An
outwardly projecting protrusion 16 is formed on the outer edge of the frame 6. The edge of the
diaphragm 8 is attached to the peripheral edge of the frame 6 with the adhesive 13 and the
gasket 7 of the above configuration is press-fitted thereon. The ridges 16 of the gasket 7 are
attached to the concave groove 15 of the rising portion 14 of the frame 6 in the form of 5-- 浩 ·
・ Zl, -4,-, and the lower surface of the gasket end is on the edge of the diaphragm 8 The
pressure contact surfaces of the two are adhesively bonded by an adhesive 13.
In the case where the raised portion 140 concave groove 15 of the frame 6 is provided over the
entire circumference, as shown in FIG. 4 and FIG. 5, the ridges 16 can be provided on the entire
circumference as the gasket 7; As shown in FIGS. 6 and 7, it is possible to form the ridges 16 at
regular intervals to reduce the resistance at the time of press-fitting into the frame 7. In another
embodiment, as shown in FIG. 8, the frame 7 is the same as that of the above-described
embodiment, and is made of a resin having a large rigidity and elasticity as a gasket end. A slit 17
is formed from the lower surface to provide a resiliently flexible holding piece 18 which engages
with the lower end of the holding piece 18 with the end face of the recessed groove 15 of the
rising portion 14 of the frame 6 The projection 19 may be provided. In still another embodiment,
as shown in FIG. 9, an engagement window 2o is provided in the mallet mallow instead of
providing the recessed groove 15 in the rising portion 14 of the frame 6, and the gasket 7 shown
in FIG. As shown in the above several embodiments, the speaker of the present invention is a
gasket of the present invention in the groove or the holding window provided on the rising
portion 9 of the frame. In order to engage the ridges and engaging pieces provided on the outer
peripheral surface, the bonding structure is doubled and can be made extremely strong and
stable by bonding with an adhesive, and the gasket and the frame Fixing of the edge of the
diaphragm interposed between them is also secure and strong, and generation of chattering
noise etc. on the edge of the adhesive can be prevented, and also in assembly, the gasket is
framed until the adhesive cures. Means of pushing against Becomes unnecessary, Hakare also
improve appearance quality is made dogs practical value.
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2
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