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JPS54178522

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DESCRIPTION JPS54178522
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of an excitation unit showing an
embodiment of a conventional transducer. FIG. 2 is a plan view of an excitation unit showing an
embodiment of a transducer according to the present invention, and FIG. 3 is a cross-sectional
view of the transducer according to the present invention. · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 2 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · core Pin 3
3 ... Insulating frame 9 9 ... Permanent magnet 10 Board.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an
electromagnetic electroacoustic transducer (hereinafter referred to as a transducer), which is
used as a sound source for small portable appliances such as pagers and electronic clocks with
an alarm function. 1 relates to the simplification of component parts. Conventionally, in this type
of converter, as shown in FIG. 1 (, coil end 1 mm, In is relatively large in JHC, 9- "" "1-Jtz- /", "j"
converter outside In the present invention, the method of combining two lead pins 3A and 3BVC
f # connected to the core 2 as a means for leading to the core 2 is used. By providing a lead pin
which has been used for five conventional two f-Js by substitution, it is possible to reduce the
number of parts and to reduce the number of man-hours. Hereinafter, the present invention will
be described in detail based on the drawings. FIG. 2 is a plan view of the excitation portion of the
converter according to the present invention, wherein 4 is a core, 5 is a core pin integral with the
core or joined by means such as caulking or screwing, 6 is a core pin 5 Coils wound around
them, 6A, 6BI-i are the ends of coil 3 respectively. Denoted at 7 is a lead pin, which is punched
into the core via an insulating rod 8 made of a plastic material in order to keep the core 4 and
the electric connection. The coil end terminal 10 is connected to the lead pin 7 and the other end
6B of the coil end is connected to the core pin 5 by welding or the like. A permanent magnet 9 is
provided around the coil 6 and on the core 4. FIG. 3 is a cross-sectional view of the converter
according to the present invention, and the excitation part is a cross-section of AOB of the plan
view shown in FIG. Descriptions of components of the excitation unit are the same as those
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shown in FIG. A support frame 10 encloses the excitation unit 11 and supports the diaphragm. If
alternating current is sweated on both ends of the coil of the converter having such a
configuration, that is, the core pin 5 or the core pin 4 or the lead pin 7, the diaphragm 12 can be
moved to emit sound. As described above, according to the present invention, the performance as
a converter can be exhibited without any change from four times, reduction of parts spotting,
reduction of man-hours for carrying, and cost reduction of the converter are realized. The
intended purpose can be achieved sufficiently, such as being able to.
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