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BRIEF DESCRIPTION OF THE DRAWINGS The drawing is an embodiment of the present
invention. 1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
Detailed Description of the Invention It is a child watch, in particular, related to a part of the
buzzer. Conventionally, in the electronic sound buzzer, a diaphragm is fixed above the audio
circuit with a predetermined distance. However, in such a structure, since the electronic sound
buzzer and the audio circuit are identified at a certain distance, only sounds of a certain strength
can be generated. Therefore, depending on the place where the sound is generated or the like,
the sound may be 5.7... ')-'-Too strong, which may cause inconvenience to other people. The
object of the present invention is to make it possible to adjust the volume without removing the
above-mentioned drawbacks without requiring any operation in appearance. Below, 1. ! ! g will
be described in more detail. The figure is an Ifrl'ti view of an embodiment of the invention, in
which figure 1 is an audio circuit, which is fixed to the lower opening 4 of the barrel 5 via a
screw ring 6. Further, a stepped portion 5a is formed in the upper opening 7 of the barrel 5, and
both the small diameter and the large diameter are threaded. Therefore, the imaging plate 2 is
screwed into the small diameter screw portion 7a. Further, the moving plate 2 has a ring 2a on
the outside w8 and a screw portion. Furthermore, a cover 5 is attached to the large diameter
portion 7 c of the upper opening 7. The present invention has the above-described structure, and
the diaphragm 2 slides in the small diameter screw MZa of the upper opening 7 to form the
diaphragm 2 and the upper surface 1a of the audio circuit "-2-1 You can change the gap between
Generally, since the strength, volume and l of the magnetic field are 4 which is inversely
proportional to the square of the distance, the volume can be freely controlled by changing the
gap between the top surface 1 a of the audio circuit 1 and the diaphragm 2. be able to. As
described above, according to the present invention 11, by freely positioning the diaphragm in
the upper opening, the volume can be changed without any difference in appearance from the
conventional one, and without increasing the number of parts, It has effects such as cost
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