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JPS5587080

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DESCRIPTION JPS5587080
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a conventional
speaker apparatus, FIG. 3 is a sectional view showing one embodiment of the present invention,
and FIG. 4 is a back cavity used in the above embodiment. And FIG. 2 и и и и и и и и baffle plate, 2a и и и
и и и и и и и и и и и и и и и и и speakers for medium sound, 4a и и и и и и и и и и и и и и и и и back Cavity, 11a...
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker device,
and when the speaker requiring the back cavity is mounted from the baffle plate to the front in
practical use, the spacer for projecting the speaker is integrated with the back cavity. By forming
it, it is intended to reduce the number of parts and the number of assembling steps. Generally, in
a single speaker box, a plurality of speakers for high, medium and low-) sounds are attached, socalled mer, иии, 3 fj '#' and-2) mainly in the two-way speaker system. The influence of the sound
speaker on the vibration of the bass speaker,-! x (i 3 (-1 1 F-, to prevent the r, and for the speaker
for the medium sound и и и, in order to ensure a sealed volume of about 2 ░, dedicated speakers
for the medium sound called back cavity It is known to use a closed container. FIG. 1 shows such
a conventional speaker device, in which 1 is a speaker box, 2 is a baffle plate attached to the
front thereof, and 3.4.5 is for high sound respectively attached to the baffle plate 2. A speaker for
medium sound and low sound, 6 is a back cavity formed of wood, a resin molded product or the
like and attached to the back surface of the baffle plate 2 so as to hamper the speaker 4 for
medium sound. By the way, in recent years, high-tone, medium-tone, and low-tone speakers are
shifted in the front-back direction by a predetermined amount, and both sound pressurefrequency characteristics and phase-frequency characteristics become flat at the center point.
The linear phase speaker system has been used as a uni) 3 and back cavity to a speaker for
medium sound in such a near PHASES BK core stem <t71 # n2: = * @ IKIri , ? 2- ~. Prepare two
spacers 7.8 and two sealing pads 9 and 1o separately from the 2.7 power factor 6, and place
them between the front of the baffle plate 2 and the periphery of the middle speaker 4 5 5 for
bass By interposing these and fastening them with screws (not shown) or the like, the mid-sound
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1
speaker 4 and the low-pitch speaker 6 are shifted forward. If this is done, the back cavity 6 and
the spacer 7 must be prepared separately for the medium sound speaker 4 and separately
attached, so the number of parts increases and the number of assembly steps also increases. was
there. The present invention provides a speaker device that solves such conventional drawbacks.
An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.
In FIG. 9W 4, reference numerals 2 and 4 respectively denote a baffle plate and a speaker for
medium sound similar to those shown in FIGS. 7 and 41 and FIGS. Reference numeral 11 denotes
a back cavity integrally formed of resin or the like, and a weir 11a of a predetermined thickness
is formed on the front end peripheral edge, and the rear end is sealed. In addition, 11b is a
through hole for screw insertion formed in the weir 11a, and 12 is a sealing pad. In the above
configuration, the back cavity 11 is inserted from the front surface of the baffle plate 2 into the
through hole 2a from the front surface thereof, and the wedge 11a is pressed against the front
surface of the baffle plate 2 through the sealing pad 12 Are stored in the bank cavity 11 and the
peripheral edge 4a of the speaker 4 is superimposed on the above-mentioned ridge 11a, and in
this state, the peripheral edge 4a of the speaker 4 and the g11a7 sealing patch 12 are tightly
fastened with screws (not shown). For example, the speaker 4 is attached so as to protrude from
the baffle plate 2 by an amount corresponding to the amount of the wedge 11a, and the
attachment of the back cavity 11 itself is also simultaneously protected. In particular, in the case
of this embodiment, since the attachment of the cavity 5 и tee 11 can be performed from the front
face of the baffle plate 2, the workability can be improved in this sense as well. In the
embodiment, the rear end portion of the back cavity 11 is shown to be uniformly sealed, but for
example, a through hole is formed in the rear wall, a rubber pad is inserted therein, and the lead
wire of the speaker is passed through the rubber pad. It goes without saying that it may be
possible to pull out. As described above, according to the present invention, since a weir of a
predetermined thickness is provided on the front end periphery of the back cavity, and the
periphery of the speaker is attached to the baffle plate via this weir, the back cavity is provided
on the speaker And if it is necessary to project the speaker from the baffle plate and attach it, the
practical value can be increased since the number of parts and the number of assembling steps
can be reduced.
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2
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