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JPS5546682

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DESCRIPTION JPS5546682
Specification L Title of Invention
Ultrasonic transducer device
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a w4 ultrasound
pregnancy device such as a seven-ramic microphone. The ultrasonic vibrator applies an electrical
signal to the input terminal to vibrate the piezoelectric element and the resonator. Thus, the
vibration of the piezoelectric element and the resonator continues even if the sleepiness signal
applied to both terminals is removed. This is called reverberation. If this reverberation is heard
for a long time, if you try to make the reflection type at wave nuitch work as both transmission
and delivery with a single ultrasonic transducer, the delivery will receive an electrical signal and
the reception kate will continue to enter. Opening is delayed, so the ultrasound switch will not
operate on the near (reflectors). Therefore, it is necessary to shorten the remaining 11 o'clock,
and to operate the reflector of point (from the point of opening the goo and the temporary
review of the receiving wave quickly). The present invention has been made in view of the abovementioned obscene point, that is, the piezoelectric element and the resonator are surrounded by
a cylindrical body having fiber hairs for holding the piezoelectric element and the resonator
around the circumference Therefore, the purpose is to soften the piezoelectric element and the
resonator, hold the surface in a space of ii, and eliminate the cause of the reverberation due to
the vibration from the load of the cushion material itself being applied to the piezoelectric
element and the resonator. It is Hereinafter, the present invention will be described based on the
drawings showing the present invention as an example. X is a vibrator main body, and is attached
to a base 72 having an input terminal l projecting from one side and the other 1IIIf + of this base
2 It comprises the piezoelectric element 3 and the resonant EndPage: 1 element 4. A cylindrical
body 5 surrounds the piezoelectric element 3 and the resonator 4 and has fiber hairs 6 around
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its circumference. Although this fiber hair 6 embraces the piezoelectric element 3 and the
resonator 4, it is soft (wrapped). The cylindrical body 5 is fixed to the base 2 with an adhesive or
the like. Reference numeral 7 is a case located on the outside 11 of the cylinder 5. The present
invention makes the piezoelectric element 3 and the resonator 4 soft because the piezoelectric
element 3 and the resonator 4 are surrounded by the cylindrical body 5 having the fiber hairs 6
supporting the piezoelectric element 3 and the resonator 4 in the above manner. Blood can also
be encased in a container, the load of cushioning material itself is not added, the cause of the
reverberation due to vibration can be removed, and the reverberation can be reduced without
lowering the sensitivity of the vibrator.
4. Brief Description of the Drawings The drawings show an embodiment of the acoustic wave
transducer device according to the present invention, FIG. 1 is a sectional view, and FIG. 2 is a
perspective view. X · Vibrator body, 1 · · · Terminals 2 · · · Base · 3 · · Piezoelectric elements, 4 ·
resonators · 5 · · · · · · · · · · 腫-EndPage: 2
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