JPS52150009

Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS52150009
The tip of the cylindrical body 2 is integrally connected to the throat portion 2 of the horn 1
whose diameter is gradually expanded from the throat portion 2 to the opening portion 3 of the
ultrasonic horn. An ultrasonic horn formed by setting the diameter of the tip of the tip larger
than the diameter of the throat 2 to make the diameter of the proximal end smaller than the
diameter of the tip and attaching the ultrasonic transducer 5 to the proximal end of the
cylindrical body 4 .
2, the scope of claims
3. Detailed description of the invention As shown in FIG. 1 (a), the conventional ultrasonic horn
has an ultrasonic transducer d at the throat a of the horn C whose diameter gradually increases
from the throat a to the opening. And the sound pressure k in the direction forming an angle of
α degrees at the throat a of the horn C with respect to the center @ C 4 of the horn C. The result
is as shown in FIG. The sound pressure increases and decreases greatly as the value of .DELTA.
Although the present invention eliminates the above-mentioned conventional drawbacks, the
following will explain the embodiments of the present invention with reference to the drawings.
A horn whose diameter gradually expands from the throat 2 toward the opening 3 is a cylindrical
body whose tip is integrally connected to the throat 2 of the horn 1, and the diameter of the tip is
from the diameter of the throat 2 The diameter of the proximal end is made smaller than the
diameter of the distal end. Reference numeral 5 denotes an ultrasonic transducer, which is
equipped with a piezoelectric crystal piece-pin pair of electrodes, and when a high frequency
voltage is applied between the pair of electrodes, the piezoelectric crystal piece vibrates to
generate an ultrasonic wave. And the proximal end of the tubular weight. The present invention
is configured as described above, and the center of the horn 1! An angle of β degrees is formed
at iB2 with respect to l111 g. The length t of the large diameter portion of the cylindrical body 4
10-05-2019
1
is substantially equal to the wavelength of the ultrasonic wave, and the length t of the small
diameter portion of the cylindrical body 4. Is approximately 1/2 of the wavelength of the
ultrasonic wave. EndPage: 1 According to the present invention, the tip of the cylindrical body 2
is integrally connected to the throat 2 'of the horn 1 whose diameter gradually expands from the
throat 2 toward the opening 3, The bore diameter at the end is made larger than the bore
diameter at the throat 2 so that the bore diameter at the base end is smaller than the bore
diameter at the tip, and the ultrasonic transducer 5 is attached to the base end of the cylindrical
body 4. As can be seen from the results, there is an effect that the directivity characteristic can
be made excellent.
4. Brief description of the drawings FIG. 1 (a) is a cross-sectional view of a conventional
ultrasonic horn, FIG. 11 (b) is a directivity characteristic of the conventional ultrasonic horn, and
FIG. 2 is an embodiment of the present invention. FIG. 3 is a directivity characteristic diagram of
the supersonic wave horn of the present invention. 1 is a horn, 2 is a throat, 3 is an opening, 4 is
a cylindrical body, and 5 is an ultrasonic horn. Patent Applicant Matsushita Electric Works Co.,
Ltd. Attorney Takemoto Toshimaru (other 2 persons) Fig. 1 (4) (,> Fig. 2 Fig. 3 EndPage: 2
10-05-2019
2