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JPS56135182

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DESCRIPTION JPS56135182
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear view of an electronic watch according to
the prior art, FIG. 2 is a rear view of an electronic watch according to an embodiment of the
present invention, and FIG. 3 is an embodiment shown in FIG. FIG. 4 · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · rotational
groove, 7 · · · cover glass, 8 · · · watch module 9 9 diaphragm 11 11 sounding body 12 through
hole.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic
watch having an alarm function, and in particular to a conventional case 7i for a case structure 4
of an electronic watch that collects snow from an alarm hole with a booth back lid 4-formed
sound emission hole. Shiroi i case back! -When forming two cases, as shown in Fig. 4 (2), the case
@ lii + l + is rotated to detach and attach to the case @ 1 121, the case back I l + a small portion 1
Nibles etc. of the case back I The sound emission hole (3) which penetrates (1) was formed. This
clever structure 1 has a drawback that when the watch sees the arm, the sound emission hole (3)
is closed and the number of persons decreases, and the sound emission hole 13) or the outside
(24 holes) The ground appearance on the appearance was not good. The present invention has
the above-mentioned drawbacks I: a) made by C, having a structure in which the rotary groove
and the sound release hole for attaching and detaching the case back lid are expensive 6: due to
the arm-2 I being left I--Provides an electronic watch gear structure capable of obtaining
sufficient back pressure. The present invention will be described in detail below with reference to
the drawings. FIG. 2 is a back view of the electronic watch showing the embodiment of the
present invention, and the case back cover (5) is screwed into the boundary hand main body (4)
tr'L'c. (61 is a rotary groove, and is formed by 8 concave arcs according to the outer periphery of
the case back cover 5). In the case of replacing the battery or the like, the 12 rotation groove 16)
is locked by a special jig 2 and the case back cover (51 is removed and attached). In this rotary
groove 16112, a ta hole for emitting an alarm sound is opened from the inside. Cross section of
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Figure 2! 2T shows the situation. In Fig. 2-, +7) is a watch module (41--fixed cover glass, I8)
inserted into the inside of the watch body (4) to perform a watch operation and display a clock
module. -Le, (9) is between the case back cover [5) and the watch body (4) (diaphragm held by パ
ッ キ ン packing l) 0, aυ is the same as the vibration plate 191c and vibration flll l-vibration The
sounding body 03 is a through hole of the case back cover 51 (the rotating groove of the case 51
is open. The rotation groove 161 is formed in a thick part at the outer peripheral part of the case
back itfil-concave Y-formed by Ni Press C, and the true through hole 02 is from the side of the
rotation @ 161 to the center back-2 same case back The lid is pierced and C is formed, and the
concave inner side of the rotation groove (6) is opened. This eye hole 11X! First of all, the rotary
groove (61 is formed first, and then a part Q3 of the thick part of the corresponding portion of
the rotary groove 1611 is rotated from the opposite side of the rotary groove It is formed by
cutting off.
This case back cover (5: the watch body (4) I screwing in 1: by means of the diaphragm (9)
through Patzkin 0 α [bottle-like fixed two, and from the diaphragm (9) 1-1 The through hole O3
completely waterproofs the space passing through and the internal watch joule (8). When the
one sound producing body o11 is driven at a predetermined time-a part of time, the drive &
11111 is driven, and the external peripheral sound of the predetermined circumference a is
discharged from the rotation groove 161. At this time, the through hole a and the rotation groove
(61 are formed on the outer periphery of the case back cover 51 (the arm is not closed) so that
the through hole fi3 is not blocked. As described above, according to the present invention I:
according to the outer periphery of the case back cover 1: to form the formed rotation @ +-+ one
hole, depending on the two, it is possible to Toyokawa as the rotation groove can be left as an
appearance hole It has the advantage that the location of the sound emission hole is unknown
and the appearance is improved, and it has the advantage that efficient sound emission can be
performed without being blocked by the history Cll K 11 second degree-
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