JPS57202298

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DESCRIPTION JPS57202298
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a conventional electric type,
FIG. 2 is a sectional view showing a structure of a conventional electrodynamic speaker, and FIG.
3 is a view showing a diaphragm of the speaker of the present invention. Fig. 4 is a crosssectional view showing the structure of the speaker according to the present invention, Fig. 5 and
Fig. 6 show the parts of the speaker according to the present invention, and Fig. 7 is a view
showing a watch with a radio according to an embodiment of the present invention. FIG. 8 is a
sectional view showing the positional relationship between the case and the speaker in the
embodiment shown in FIG. 1... Conventional diaphragm, 2 ........ Conventional speaker frame, 3 ..
Magnets 4,. The diaphragm of the present invention, 6 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · Base , 11 ...... the present invention of the speaker, 12 ... ... liquid crystal
display panel, 13 ... ... band, 14 ...... watch of the case.
DETAILED DESCRIPTION OF THE INVENTION In the case of using a small amount of parts in a
small amount information apparatus such as a radio-equipped wristwatch, the shape of the parts
has a great influence. In particular, it is clear that a square part can effectively use a limited n
space, particularly a circular part. Conventional small W! Considering speakers, the speakers of
the dynamic panel shown in FIGS. 1 and 2 are generally circular. In any of these, a drive unit
such as a magnet or a pole is located at the central portion. 1-Rehearsal xrr, t2325 No matter
how small such a structure is used, the thickness of the device becomes large due to the
thickness of the central part of the kernel, and information on radio news etc. is obtained If it is
an apparatus for this, it does not require so much frequency characteristics, so if it is possible to
obtain even a certain volume, the thickness is also thin (other than a circular shape is desirable.
The speaker of the present invention is a thin, rectangular diaphragm tube suitable for this small
bowl information device. FIG. 3 shows a diaphragm of the speaker of the present invention. The
outer shape is a rectangular shape, but it is an oval-shaped corgage ballon, and it is the inside of
this corrugation ballon that actually vibrates. Although the size of the speaker is determined by
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the shape of the diaphragm, it requires only a small width compared to that of a conventional
circular diaphragm, so it is most suitable for being attached to equipment that you want to be as
small as possible. The drive part is not at the center of the diaphragm as shown in the crosssectional view of FIG. 4 ((0 in FIG. 6 in FIG. 6 in which the bending part is a spring)). On the other
hand, one of 12P9) and 1326 is fixed to the diaphragm at t base. Does this team receive the
attraction force of the magnet in 9?> When the voice signal tube is added to the coil in 1 in the
figure 1, the attraction force of i gutt changes, and vibration occurs in the team. If one side is
fixed to the pace and this pace is fixed to the main body of the information device, the vibration
transmitted to the diaphragm is amplified by Qi's application. FIG. 5 shows an example of a drive
circuit comprising a magnet, a pole, a fill and a pace. The size and number of balls and coils may
be adjusted according to the area of the diaphragm. FIG. 5 is a view from the side of the
diaphragm> looking at the drive circuit. FIG. 6 is likewise a diagram of a fifth figure. # F7 shows a
view of the watch with a radio according to the embodiment. Using a round speaker can make
the system finer. FIG. 8 similarly shows a cross-sectional view showing the positional relationship
between the case of the watch with a radio and the speaker of the present invention.
Since the drive unit can be held at the end of the case, in the case of a radio, it is easy to lay out
parts with thickness such as poly varicons. 3−′) 327
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