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DESCRIPTION JPS52155541

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DESCRIPTION JPS52155541
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a cabinet showing a
conventional speaker mounting structure. FIGS. 2 to 4 relate to the embodiment of the present
invention, and FIG. 2 is a perspective view of a support used in the embodiment of the present
invention. FIG. 3 and FIG. 4 are cross-sectional views of the embodiment of the present invention.
1 ... baffle board, 2 ... opening, 3 ... speaker, 3 '... ... Nubikauf I / -, 4 ... curved magnetic circuit, 5 ...
support, 6 ... sound absorbing material, 7 ... back plate, 8 ... ... concave part.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for
mounting a speaker on a cabinet. Ideally, a shell material constituting the cabinet is desired to be
a licking material that vibrates or transmits sound like a rigid body, and usually a thick one of the
front wood board is used, but in the opening In the baffle plate to which the spilling force is
attached on the back side edge, the speaker can not be installed in a recessed position by the
thickness of the baffle plate, and the recessed portion from the outer surface of the baffle plate at
the speaker mounting position with respect to the effective vibration radius of the speaker The
proportion is / · / ((and B / B / 2) the speaker's characteristics deteriorate. Therefore, as shown in
FIG. 1, normally, only the attachment portion of the speaker is thin and the other buckle plate 1
is used. However, it is generally difficult to obtain a baffle plate thickened to such an extent that
it does not vibrate is there. Therefore, the usual baffle plate resonates with the reaction of the
vibration of the cone by the sound waves from the speaker or the speaker frame, and this
resonance is transmitted to the core / via the speaker frame, thereby adversely affecting original
vibration of the cone It was. The present invention is a structure for attaching a speaker to a
cabinet which aims at minimizing the vibration of the speaker frame as much as possible when
reproducing the sound from the speaker. Embodiments of the present invention will now be
described with reference to the drawings. 3 and 4, the rear outer end portion K of the magnetic
circuit 4 of the speaker 3 mounted on the back side edge of the opening 2 of the baffle plate 1 of
the cabinet, as shown in FIG. 2 Molded with metal or plastic or the like to hold the sound
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absorbing material 6 therein and the base portion is fitted in the concave portion 8 at the tip of
the support 5 fixed to the back plate 3jj7. The vibrations occurring in the speaker frame 3 'and
the magnetic circuit 4 due to the reaction of the vibration of the voice coil and the cone (not
shown in the drawing) are caused by fitting the magnetic circuit 4, which is a portion close to the
center of gravity of the speaker 3, from the rear into the recess 8 of the support 5 Since they are
surely held together, they are prevented from increasing in amplitude and are extremely small.
Therefore, it is less likely to transmit the vibration to the baffle plate 1 connected to the front
face of the speaker frame 3 'to resonate. The vibration of the baffle plate 1 concomitant with the
sound waves backward from the cone of the speaker 3 also reaches the speaker frame 3 ', and
the magnetic circuit 4 continuing to the rear side of the speaker frame 3 is surely confirmed by
the support 5 , So the amplitude is made small, and it is rare that it adversely affects the cone.
Since the outer circumference of the support 5 is a conical surface, sound waves from the
speaker 3 are not reflected on the outer circumference of the support 5 and directly reach the
cone of the loudspeaker 3, and on the outer periphery of the support 5 A large number of holes
provided are for allowing sound waves to penetrate into the interior and absorbing and
disappearing on page 4 by the sound absorbing material 6 inside.
As described above, according to the present invention, it is unlikely that reaction vibration due
to vibration of the speaker cone is transmitted to the baffle plate via the speaker frame, and
vibration of the baffle plate resonating with the sound wave is transmitted through the speaker
frame Since it is less likely to lie on the speaker cone, the characteristics of the speaker attached
to the cabinet can be improved.
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