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JPS5988996

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DESCRIPTION JPS5988996
[0001]
Brief description of the drawings
[0002]
1 to 3 show a conventional example, FIG. 1 a is a plan view, the same is a longitudinal sectional
view, FIG. 2 shows a resonance mode, and a is a plan view showing the position of antinodes of
resonance, b Is a front view of the mode, FIG. 3 is a sound pressure frequency characteristic
diagram, FIGS. 4 and 5 show a first embodiment of the present invention, FIG. 4 a is a plan view,
and FIG. 5 shows a sound pressure frequency characteristic diagram, FIGS. 6 to 8 show a second
embodiment of the present invention, FIG. 6 a shows a plan view, FIG. 6 shows a longitudinal
sectional view, and FIG. 7 shows a resonance mode. A is a plan view showing the position of the
antinode of resonance, b is a front view of the mode, FIG. 8 is a sound pressure frequency
characteristic view, and FIG. 9 is a perspective view of the braking piece. 11.21 is a dust cap,
12.22 is a rectangular cone diaphragm, 13.23 is an edge, 14 ° 24 is a frame, 15.25 is a voice
coil, 16.26 is a damper, and 20.30 is a braking piece. Fig. 2 (CB Fig. 3 co
12-05-2019
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