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 JPS55110496 Description 1, title of the invention High water pressure transducer 3. Detailed Description of the Invention The present invention relates to the structure of a transducer using a cylindrical vibrator. Conventionally, as shown in FIG. 1, this type of transducer has a structure in which the cylindrical vibrator 1 is supported by the end caps 3 and 4 via the cushion 2 and the periphery is covered with the rubber boot 5. In order to prevent mechanical connection between the cylindrical vibrator 1 and the end cap 3.4, a cork or the like having a small acoustic impedance is used as the cushion 2. However, in the case of a transducer with such a structure, the rubber boot 5 is pushed into the inside of the vibrator 1 under high water pressure because the rubber boot 5 is inserted into the cork 2 used as a cussian so that the rubber boot 5 is broken. There was a drawback to cause. In addition, if the thickness of the cushion is reduced to reduce the amount of penetration of the rubber boot, the electrical insulation is reduced, so that the effect of preventing dielectric breakdown and the coupling vibration with the end cap is reduced. There is a disadvantage that performance can not be obtained. An object of the present invention is to provide a high water pressure EndPage: 1 transducer that eliminates the above-mentioned drawbacks. That is, in the transducer according to the present invention, in order to ensure electrical insulation, an insulating spacer having water pressure resistance strength is inserted between the vibrator and the end cap, and a part of the spacer is cut away to be thick. Using a cooker, while preventing coupling vibration with the end cap, and by providing a minute gap between the vibrator and the spacer which is an insulator, the penetration of rubber boots can be limited and it can be used even under high water pressure It is a structure. Next, one embodiment of the present invention will be described with reference to FIG. In the transducer according to the present invention, an insulator spacer 04-05-2019 1 10 for maintaining water pressure resistance and electrical insulation is provided between the cylindrical vibrator 1 and the end cap 2, and a part of the spacer 10 is cut out to end The cushion 2 for preventing coupling vibration with the cap 3.4 is inserted into the notch 10 'of the spacer and covered with the rubber boot 5. The feature of this structure is that a notch 10 'is provided in the spacer 10 and a cook 1 is fitted in the notch. In this structure, by setting the relationship between the depth l of the notch 10 'and the thickness t of the cushion to t> l, the micro-lit gap 20 of any dimension is made between the vibrator 1 and the spacer 10. As it is possible to make, it is possible to control the penetration of the rubber boot by water pressure and to prevent the vibration transmitted from the vibrator 1 to the end cap 3.4 via the spacer 10 by having one gap. can do. Further, by providing the support 11 against the water pressure in the direction to compress the cushion 2, it is possible to prevent the cushion 2 from being compressed by the water pressure and thereby reducing the effect of preventing the joint vibration. The invention is effective. It is not necessary for the support 11 to be an insulator in particular, as long as the water pressure resistance can be secured. Although the above description is based on the structure in which the insulating spacer 10 is provided with a notch, the gap 20 can be relatively large when the water pressure is relatively low, so the insulator need not necessarily be used. The end cap 3, 4 may be provided with a notch 10 ′ to insert the cushion 2. Although the transmission of the electrical signal is performed using a watertight cable, it is omitted in the figure. Further, the same effect can be obtained even when the vibrator 1 is not a cylindrical type but a polygonal type vibrator. As described above, according to the present invention, a transducer excellent in characteristics up to high water pressure, in particular, a high water pressure wave transmitter to which high voltage is applied can be obtained. 4. Brief Description of the Drawings FIG. 1 is a cross-sectional view of a conventional cylindrical transducer, and FIG. 2 is a cross-sectional view of a transducer according to the present invention. 2 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · spacer 10 ′ ······································································································································································································· ························ Clearance; 5−EndPage: 2 04-05-2019 2
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