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Brief Description of the Drawings
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of a V-curved vibration or edgeless speaker using a honeycomb core. Conventionally, as shown in
FIG. 1, a center ball 7 and a magnet 8 plate 5 constitute a magnetic circuit to form a magnetic
circuit 2 , a center ball 7 and a plate 5 form a magnetic gap, and the voice coil 4 is centered
on the magnetic gap circle. Place the winding part of the flat honeycomb core 2 with a light
material such as paper or aluminum foil, and put the paper, skin material such as aluminum
sheet on both sides; Stick the end to the voice coil 4 and stick the peripheral solid part F of the
diaphragm 9 to the outer edge of the plate 5 and stick it to 1.7-1, in this case the lowest
resonance Q of the edgeless speaker The number 10 is high and the sharpness q or high defect
has been found. The present invention has been devised to eliminate the above-mentioned
defects, and the explanation will be given in the first embodiment shown in the drawings, as
shown in FIG. 2. As shown in FIG. Make up 2 and put skin, such as paper, aluminum, etc., on the
top surface and parallel to the periphery, excluding the solid foot portion, 3 and place the
winding portion in the center downward of the vibrating portion of the diaphragm 1 with
magnetic circuit G) A speaker with the upper end of the voice coil 4 disposed in the magnetic gap
attached, and the surface of the solid and rigid portion fixed to the outer edge of the plate 5. In
the case of the honeycomb diaphragm, if both sides of the core are covered with skin wrinkles,
bending rigidity becomes very large, or one side: (if it is not a skin material, it becomes very
weak. Therefore, in the case of the configuration of the present invention, it is necessary to follow
the decrease of the sharpness (or lower than the minimum frequency between two waves). In the
same wave number characteristic diagram shown in FIG. 4, a dotted line is a characteristic
diagram when using a conventional honeycomb vibration isolation plate, and a solid line is a raw
diagram of the present invention l).
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