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DESCRIPTION JPS54113528

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DESCRIPTION JPS54113528
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a conventional speaker box,
and FIGS. 2 and 3 are sectional views of a speaker box according to the present invention. 1 ...
speaker box, 2 ... speaker, 5 ... sound absorption material, 6 ... net, 7 ... pamphlet board.
DETAILED DESCRIPTION OF THE DEVELOPMENT This invention relates to improvement of a
speaker box using a net for a speaker frame sleeping cover. In many speaker boxes, as shown in
FIG. 1, a large amount of sound absorbing material 5 is inserted inside. In this case, sound
absorbing material 5 or lead! 4 directly contacts the cone paper of the speaker 2 and there is a
danger that dusts of the sound absorbing material 5 or wood chips of the box etc. will enter the
magnetic circuit portion of the speaker 2, 5 was installed as a protective cover. Depending on
how to insert the sound absorbing material 5 and wiring method of the lid wire 4, depending on
how to install the speaker 2, sometimes these risks can be prevented but for many years the
speaker 2 is operated While using it, touching cone paper (diaphragm) or causing abnormal
sound was also seen, so wire mesh 3, net. Although it was a measure to prevent sticking in
advance to the frame, attaching a net-like book to the curved part of the frame was bad
workability and it was quite expensive. SUMMARY OF THE INVENTION It is therefore an object
of the present invention to provide a speaker box in which such a disadvantage is eliminated and
a protective cover can be easily attached to a speaker frame. The present invention relates to a
speaker box in which a stretchable net is previously attached to the back surface of a speaker
box and the speaker is pushed into the box from the front of the baffle plate so as to impart a
moderate tension to the net, Covered by the net, and to keep the speaker from being trained. .
Hereinafter, the speaker-box according to the present invention will be described with reference
to the drawings. FIG. 2 is a sectional view of the speaker box according to the present invention.
As shown in FIG. 3, a net 6 knitted so as to have stretchability is attached to the back surface of
the baffle plate 7 through a speaker mounting hole 8 , And the speaker 2 is weired to the baffle
plate 7 so as to push the speaker 2 from the front face of the buckle plate 7 into the inside of the
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speaker box 1 so as to impart a moderate tension to the net 6 and the speaker 2 Cover the entire
frame on the back so that you can hurry. That is, since the net 6 is affixed to the flat surface of
the baffle plate 7, it is extremely easy to perform the attachment work as compared with the case
where a mesh or the like is attached to the curved surface portion so as to close the opening
portion of the frame of the speaker 2. This invention is sufficient simply to loosely attach the net
to the baffle plate of the speaker box 1 with a table, rivets or the like, and inefficient work of
attaching to the curved opening of the back face of the speaker frame by adhesion, welding or
the like Becomes unnecessary.
That is, it is due to adhesion or welding in order to stick the wire gauze to 3 rails, but it also
requires time for clamping and solidification, unevenness in finished state due to variation in
bonding work. Defects such as peeling of the net and fluttering of the net at the time of speaker
driving also occurred frequently, but these disadvantages can be eliminated by this invention. . It
is also possible to adjust the performance of the speaker itself by selecting the material of the net
having an appropriate density (air permeability), and compared with the one to which the net is
pasted on the speaker frame, There is also an advantage that the performance can be freely
adjusted on the box side by using the same speaker.
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