JPS6285023U

JPS6285023U -

Info

Publication number: JPS6285023U
Application number: JP17689285U
Authority: JP
Priority date: 1985-11-19
Filing date: 1985-11-19
Publication date: 1987-05-30

Description

[Brief explanation of the drawing]

第１図は本考案の構成例の側面図、第２図は従
来例の側面図、第３図は主信号の伝播経路を示す
側面図である。１１，１２……超音波遅延媒体、１２，２２，
３２……入力トランスデユーサ、１３，２３，３
３……出力トランスデユーサ、１４，３４……短
辺、１６，１７，３６，３７……長辺、Ａ_１〜Ａ
_１３，２４，２５……減衰材、Ｓ……スプリアス
信号の伝播経路。 FIG. 1 is a side view of a configuration example of the present invention, FIG. 2 is a side view of a conventional example, and FIG. 3 is a side view showing a main signal propagation path. 11, 12... Ultrasonic delay medium, 12, 22,
32...Input transducer, 13, 23, 3
3... Output transducer, 14, 34... Short side, 16, 17, 36, 37... Long side, A ₁ to A
₁₃ , 24, 25... Damping material, S... Spurious signal propagation path.

Claims

[Claims for Utility Model Registration] (1) The shape of the main surface of the ultrasonic delay medium is such that one corner of a rectangle with a length ratio of long side to short side of approximately 3:2 is at an angle of approximately 45 degrees. It is a pentagon with a cutout,
In an ultrasonic delay line in which an input transducer and an output transducer are attached to the cutout surface, and a damping material for attenuating ultrasonic waves is provided on at least one of the main surfaces, the attenuation material provided on the main surface An attenuating material provided on at least one major surface of the material, which is emitted from an input transducer, is reflected at a long side facing the input transducer, and further has a long side or a corner opposite the long side. is provided at a position on the main surface corresponding to an ultrasound propagation path that is reflected by the uncut short side, then reflected by the long side facing the input transducer, and input to the output transducer. At least one of the damping materials provided at the peripheral edge of the main surface has a lower damping material on the main surface that is separated from the peripheral edge than other damping materials provided at the peripheral edge of the main surface. An ultrasonic delay line characterized in that the attenuating material provided at the position has a higher ultrasonic attenuation rate than the other attenuating material provided at a position on the main surface that is separated from other peripheral parts. . (2) emitted from an input transducer and reflected on the long side facing the input transducer;
Further, an ultrasonic propagation path is reflected by a short side with a long side or corner opposite to the long side without a cutout, and then reflected by a long side opposite to the input transducer and input to an output transducer. At least one of the damping materials provided at a position on the main surface corresponding to Therefore, the damping material provided at a position on the main surface that is separated from the peripheral edge has a larger area than the other damping material provided at a position on the main surface that is separated from the other peripheral edge. An ultrasonic delay line according to claim 1 of patent registration. (3) emitted from an input transducer and reflected on the long side facing the input transducer;
Further, an ultrasonic propagation path is reflected by a short side with a long side or corner opposite to the long side without a cutout, and then reflected by a long side opposite to the input transducer and input to an output transducer. At least one of the damping materials provided at a position on the main surface corresponding to Therefore, the damping material provided at a position on the main surface that is separated from the peripheral edge is made thicker than the other sound absorbing material provided at a position on the main surface that is separated from the other peripheral edge. The ultrasonic delay line according to claim 1 of the utility model registration claim.