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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
openable, back-open, input cord speaker cabinet. 2. Description of the Related Art In recent
years, in order to reduce the cost of the speaker apparatus, a cord surfaced type speaker cabinet
71-, which does not have a terminal board for speaker cord connection, is often used. It has The
following describes a conventional cord direct-out type speaker cabinet. FIG. 1 shows a
conventional speaker cabinet, where a is a sectional view and b is a rear view. In FIG. 1, 1 is a
shell plate, 2 is a back plate provided to close the back of the shell plate, 3 is an input cord, 4 is a
hole for fixing a back plate provided around the back plate 2, 5 is a back plate. A back plate
fixing crosspiece through which screws are screwed through the plate fixing holes 4. In the
speaker cabinet configured as described above, after completion of the removal of the parts to be
installed in the cabinet, the counterbore portion 211 provided at the lower end of the back plate
2 with the input code 3 f is pulled out, and the back plate 2 is fixed to the back plate fixing
crosspiece 6 by the wedge screw. However, in the above-described conventional configuration,
since the manual power cord 3 is pulled out by providing the counterbore 2ai on the back plate
2, the back plate fixing hole for the back plate 1 by the multi-axial ball plate is temporarily added.
It has a problem that it requires two steps of processing, processing and processing of
counterbore i [12a by a router. SUMMARY OF THE INVENTION The present invention solves the
above-mentioned conventional problems, and it is an object of the present invention to provide a
speaker cabinet which can be processed to enable cord extraction in the same process as the
processing of back plate fixing holes. Do. The present invention is a speaker cabinet provided
with a back plate fixing hole and a back plate having a substantially semicircular code drawing
hole, wherein the code drawing hole is substantially semicircular. Thus, the back plate fixing
holes and the cord drawing holes can be processed in one step. ものである。 DESCRIPTION OF
THE PREFERRED EMBODIMENT FIG. 2 is a cross-sectional view of the speaker cabinet according
to the embodiment of the present invention, and FIG. In FIG. 2, 6 is a back plate and 6a is a cord
drawing hole. Reference numeral 1 is a body plate, 3 is an input cord, 4 is a back plate fixing
hole, 5 is a back plate fixing machine, and these are the same as the configuration of the
conventional example. FIGS. 3a and 3b are a cross-sectional view and a rear view of details of the
cord extraction hole 6a (= j and so forth. Also in FIG. 3, 1 is a body plate, 3 is an input cord, 5 is a
back plate fixing machine, and these are the same as in FIG.
As apparent from FIG. 3, the cord drawing hole 6a is processed into a circular shape, and the
diameter of the person is smaller than the sum of the height B of the back plate fixing machine 5
and the dogness C of the input cord 3. It is processed at a position protruding beyond the
periphery of the back plate 66 so as to create a cord passage hole 6a of a width that allows
passage of the input cord 3 in a large and circumferential portion. That is, since the input cord 3
is usually quite long and one end is fixed to the printed circuit board, it is very difficult to pass
the human power cord 3 sequentially to the circular hole from the other, but it is like this If the
code passing holes 62Lf are provided, it is possible to pass the input cords 3 from here, thereby
improving the workability. As described above, the fixing method of the human power code 3 will
be described with respect to the JIB; l (the speaker cabinet of the present embodiment). Before
mounting to the back plate 6, the human power cord 3 is placed at the position shown in FIG.
Next, attach the back plate 6 according to the procedure of (2) intact 4 dogs and attach the
power plate 6 according to the procedure of "(1) and (2)", the knot 32L of the input cord 3 is in
the cabinet nod. Even when the long input cord 3 is arranged and bundled 1) in a single bundle,
the input cord 3 is simply inserted into the cord drawing hole 6a through the cord passing hole
ebi. be able to. And, according to the present embodiment, it is possible to process with the multiaxial 71 Z-hole machine in the same process as the process for fixing the force plate 4 by
forming the code drawing hole 6 ° ak and making the machine machined circular. it can. Effect
of the Invention The present invention is to provide large drill holes for cords with a multi-axis
drilling machine in the same process as machining holes for fixing back plates by providing holes
for the cords with a drill which can be drilled twice. Can. In addition, since a hole for passing a
cord is formed in part of it, it is easy to fit a long cord into the hole for drawing out a cord, and
an excellent speaker cabinet with excellent quality can be realized.
Brief description of the drawings
1a and 1b are sectional views and a back view of a conventional speaker cabinet, and FIGS. 2a
and 2b are a sectional view and a back view of a speaker nose yabinette in an embodiment of the
present invention, and FIGS. 3a and 3b are main portions thereof Sectional view and a rear view
of FIG.
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · , 6 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 'back plate, 6a · · ·' 'cord
withdrawal hole, 6b · · · · · · · · · · · · · · · · · · · · · · · · · · · ·' Code withdrawal hole 6b · · · · · · · · · · · · · · · · · ·
· · · · · · · 6 'Back plate, 6 a ...' Cord withdrawal hole, 6 b. Name of Agent Attorney Nakao Toshio
and 1 other person Figure 1 (2) (B n Figure 3 (1), 9) = 535-