JPS5848632Y2 - Underwater ultrasonic transceiver device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an underwater ultrasonic transceiver device used for depth sounding or fishing exploration, and the drawings will be explained below.

As shown in Fig. 1, a conventional underwater ultrasonic wave transmitting/receiving device includes a piezoelectric element 1a made of polarized lead zirconate titanate, etc., which has electrodes 1a' and 1a'' made of baked silver on both sides, and a piezoelectric element 1a made of polarized lead zirconate titanate. A vibration-absorbing member 1b made of sponge-like resin or cork arranged on the outer surface of the element 1a except for the sound wave transmitting and receiving surface (electrode surface 1a'')
, an insulating outer cylinder 1C made of synthetic resin or rubber that liquid-tightly covers the piezoelectric element 1a and the vibration absorbing member 1b, and lead wires 1d' connected to the double-sided electrodes 1a' and 1a'' of the piezoelectric element. .

An underwater ultrasonic transducer 1 (hereinafter simply referred to as a transducer) consisting of a support shaft 1c' extending outward from a support shaft 1c' having a diameter of 1d" and a covered electric wire 1d (hereinafter simply referred to as a transducer) is attached to the ship's hull ( Although it is configured to be held by a holder 3 fixed to a mounting rod 2 protruding from a (not shown), when traveling while immersed in water as in a fishing probe, the position of the holder 3 is far away from the fixed part. Since the support shaft 1c' of the transducer 1, which is located at I missed it.

As a countermeasure to this problem, it may be possible to use a holder made of elastic metal such as a thin steel plate instead of a rigid holder, but in this case it was not put to practical use because it would be affected by even the slightest water pressure or hull vibration. .

The present invention was made to solve the above-mentioned drawbacks, and the embodiment shown in FIG. 2 will be described.

In the figure, numerals 1 and 2 indicate a transducer having the same configuration as in FIG. 1, and a mounting rod protruding into the water from the hull.

Further, 3 indicates an L-shaped holder, but in this case it consists of two connecting plates 3 a and 3 b and a hinge 3 C that rotatably connects the two, and one of the two connecting plates is connected. The plate 3a is fixed to the mounting rod 2 of the hull, and the other connecting plate 3
The transducer 1 is held at b by penetrating and fixing the support shaft 1c'.

Reference numeral 4 denotes an elastic piece made of a coil spring, a leaf spring, etc. installed between the two connecting plates 3a and 3b, and normally the transducer 1 is connected to the mounting rod 2 and the connecting plate 3a on the side of the mounting rod. In other words, the connecting plate 3 on the transducer 1 side
b is urged in a direction perpendicular to the connecting plate 3a on the mounting rod side.

Since the underwater ultrasonic transducer of the present invention is configured as described above, when the ultrasonic transducer receives water pressure from the traveling direction, the elastic piece 4 is bent as shown by the dotted line, and the hinge 3C of the holder is used as a fulcrum. By tilting the connecting plate 3b and the ultrasonic transducer held on the connecting plate in the direction of the arrow, the durability is improved by completely eliminating the habit of applying concentrated stress to the supporting shaft of the transducer. It has a significant effect of improving significantly.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view of an underwater ultrasonic transceiver according to a conventional example, Fig. 2 is a longitudinal side view of an underwater ultrasonic transceiver according to an example of the present invention, Fig. A is a longitudinal cross-sectional side view, and Fig. B is a perspective view of main parts. It is a diagram. 1...Ultrasonic transducer, 2...Mounting rod protruding from the hull, 3...L-shaped holder, 3a, 3
b...Two connecting plates, 3C...Hinge, 4...Elastic piece.

Claims (1)

[Scope of utility model registration request] One of the connecting plates of the holder, which is formed by connecting two connecting plates in an L shape, is fixed to a mounting rod protruding from the hull, and the other connecting plate holds an underwater ultrasonic transducer and the holder. An underwater ultrasonic wave transmitting/receiving device characterized in that an elastic piece is installed between both connecting plates.