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JPS5632892

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DESCRIPTION JPS5632892
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing an embodiment
of the present invention. 1-· · · · · · · · Horn, 1a ··· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · Yoke, 2a · · · · iron core, 3 · · · · · · · · · · ·························· Vibration plate.
DETAILED DESCRIPTION OF THE INVENTION In the present invention 11), the present invention
relates to a pronunciation attachment used as a buzzer or the like of a clock. In the conventional
buzzer mechanism, the coil f @ rotating bobbin on the yoke & &? ? The iron b penetrates the
axial center of this bobbin, and a ring-shaped magnet is cast on the coil treatment, and an iron
core 1-name 72-7 upper end and a certain distance FIN are opened on the upper surface of the
magnet. There is a thing with a tension plate installed. However, according to this structure, the
number of parts is large, the manufacturing and assembly are time-consuming, and the
manufacturing cost is increased. An object of the present invention is to provide a device having
a simple structure and a small number of parts. An embodiment of the present invention will be
described below with reference to the drawings. A yoke 2 is pressed into the lower end opening
of the horn 1 and an iron core 2a is erected at the center of the upper surface of the yoke. The
iron core 2a is integrally formed with the yoke 2 in the illustrated example, but may be made of a
separate member and fixed. Then, the coil 3 is disposed on the upper surface of the yoke 2 with
the iron core 2ai as the center. The coil 311 is formed by winding around the iron core 2a by
using a self-bonding welding iron, and the F-plane outer open part is higher than the iron core I
one end face and the t supporting part 5a is formed. . The coil 3 is wound around the iron core
2a at the time of manufacture, and even if the one-piece tube is configured together with the iron
core and the yoke 2, only the t coil is formed in a ring shape, and the shaft center is assembled!
l! The core may be attached to the yoke by penetrating the iron core in l. An imaging plate 4 is
placed on the upper surface of the coil 3. The outer peripheral surface of the imaging plate is
held by a coil supporting portion 3a and a stepped portion which is a holding portion formed in
the horn 1. ing. A j1 mass 5 is adhered to a part of the lower surface of the moving plate 4 and a
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predetermined gap is opened between the mass and the upper end surface of the iron core 2a.
The mass 5 may be adhered to the upper surface of the peristaltic plate 4. Reference numeral 1 b
denotes a hole provided at the upper end of the horn 1. As described above, according to the
present invention, the structure is simplified and the number of parts can be reduced, so that the
production 0 assembly can be easily performed, resulting in mass productivity, and further, the
production cost can be reduced. The practical effects, such as being able to do, are great.
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