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 JPS61157200 [0001] [Industrial field of application] The present invention relates to a Langer-Pan vibrator having an ultrasonic wave-irradiated surface which is held in a long and thin area by holding an electrostrictive element by a pair of metal blocks consisting of a front plate and a back plate. is there. "Prior art" A single disc-shaped electrostrictive porcelain plate is connected directly or directly or in multiples via a terminal plate in series mechanically or in parallel electrically to form an electrostrictive element, both main surfaces thereof The Langevin-type vibrator, in which a pair of metal blocks are applied and stacked and fixed, is widely used in various devices, but the conventional one has an equal cross-sectional shape of the pair of metal blocks and the electrostrictive element. Load was too light and loss was large. Further, among metal blocks, there is known one in which the front end face of the front plate to be irradiated with ultrasonic waves is increased in diameter in a trumpet shape to increase the irradiation area, but also loss can not be avoided. [Problems to be Solved by the Invention] At a height that is an integral multiple of λ / 2, one metal block that exhibits a horizontally long prismatic shape is used as a front plate that radiates vibration in the forward direction, and its longitudinal axis The electrostrictive element and the other metal block called a backing plate are laminated on one or more concave seating surfaces formed by cutting in the direction perpendicular to the horizontal axis so as to exhibit the same surface as the upper end surface of the front plate. And the length of an integral multiple of λ / 2 opposed to the concave seating surface in the direction perpendicular to the horizontal axis which joins the front plate, and additionally locates the laminate of the electrostrictive element and the backing plate. When the length of the portion having the length increases, a through hole in the direction perpendicular to the long axis is bored in the opposite portion. "Effective" Apply an appropriate acoustic load to the electrostrictive element by making one metal block and the front plate laterally long prismatic, and also make a hole perpendicular to the long axis in the front plate Thus, the transmission of 04-05-2019 1 the ultrasonic vibration to be irradiated forward in the direction of the transverse axis is blocked. [Example] (1) FIG. 1 shows a basic embodiment of the Langevin-type vibrator of the present invention, in which 1 is a lead zirconate titanate-based compound), respectively by silver baking or the like on both main surfaces. A metallized electrode surface (not shown) is formed, and a pair of polarized plate-like electrostrictive elements 11.11 are formed of a thin metal plate, and a tongue-like conductive portion 12a connected to a lead wire is provided on the outer periphery Electrostrictive element mechanically joined in series and electrically in parallel via the terminal strip 12 with the terminal strip 12 side as the positive polarity side by an adhesive, 2 is one metal block which becomes the front plate Preferably, the electrostrictive element 1 has a width substantially equal to the outer diameter of the electrostrictive element, and the electrostrictive element 1 and the other metal serving as a backing plate in a direction perpendicular to the horizontal axis at the central portion in the horizontal direction. The upper end face of the laminate with block 3 is a pair of front plates having a height that is an integral multiple of λ / 2 A recessed seating surface 22 of a depth which is positioned in the same plane as the facing part 21.21 of the end with the laminated body, and a groove 28 which is also deeper than the recessed seating surface 22 in the direction perpendicular to the horizontal axis. 28 to provide insulation between the electrostrictive element 1 and the facing portions 21. 21 on both sides of the front plate, and in the direction of the transverse axis of ultrasonic vibration to be irradiated forward from the electrostrictive element 1 Block the propagation of (2) In FIG. 2, 1 denotes an electrostrictive element comprising a pair of electrostrictive elements 11.degree. 11 and a terminal plate 12 on the outer periphery of which a terminal portion 12a for connecting a lead wire is projected. A back plate which is laminated and joined to the electrostrictive element 1 in a recessed bearing surface 22 in a direction perpendicular to the horizontal axis which is bored at a central portion in the horizontal axis direction of Grooves 28 and 28 which are deeper than the above-mentioned recessed bearing surface 22 holding insulation with the electrostrictive element 1 between the both side ends 21 and 21 are engraved, and these configurations are completely the same as the previous example. In the example, the front plate 2 is elongated in the horizontal axis direction, and the opposing portions 21.21 formed at both ends via the laminated body of the electrostrictive element 1 and the backing plate 3 and the deep grooves 28.28 are attached. At a portion corresponding to a node of the laterally propagating vibration in the opposite portion 21.21, the direction perpendicular to the horizontal axis The through holes 21 a + 21 a are provided to prevent the vibration that propagates in the lateral direction and makes the irradiated surface of the front plate undulate in the case where the major axis dimension of the front plate 2 is increased. (3) FIG. 8 is a plurality of, in this case, an integral multiple of λ / 2 as in the previous case, in order to increase the output, the concave bearing surfaces 22. Terminal plates 12 '12' and 12 'each having a pair of electrostrictive elements 11, 11.11, 11' and 11.11 and conductive portions 12a + i 2'a and 12 "a on 22 'and 22 #. 8 pairs of electrostrictive elements 1, 1 ′ and 1 ′ ′ and backing plates 8, 8 ′ and 8 ′ ′ are respectively manufactured and laminated in the same manner as in the 04-05-2019 2 previous example. The upper end face is set equal to the height of an integral multiple of λ / 2 of the front plate, and the height of the integral multiple of λ / 2 is maintained between the laminates of the eight electrostrictive elements and the backing plate. Similarly, a portion corresponding to a node of the laterally propagating vibration in the facing portion 21.21 of the front plate formed through the deep groove 28.28 is straight with the horizontal axis. The angular through holes 21a e 21a are provided, and they are propagated in the lateral direction to block the vibration that gives rise to the irradiation surface of the front plate. In this example, the electrostrictive elements 8 'and 8 "and the backing plate 8.8 are laminated on the recessed seat surfaces 22' and 22 'formed on both side ends of the front plate 2 in the horizontal axis direction, and fixed I #. However, in order to apply a sufficient acoustic load to these electrostrictive elements 8 and 8, the concave seat surfaces 22 'and 22 "on the both ends of the front plate 2 are electrostrictive elements 1' and 1" on the back plate 8 '. , 8 'are not shown, but through the same groove as the groove 28.28 of the previous 2 example which is deeper than the recessed bearing surface, the opposite portion 21 of the front 2 example of the height of λ / 2 as well. The front plate 2 may be extended in the longitudinal direction so as to form a corresponding portion corresponding to any of 21. In addition, although fixation of the electrostrictive element and backing board which consist of a pair of electrostrictive element and terminal board to the front board on the gold side was shown about the mode laminated by the adhesive agent, as shown in FIG. The element 1 is an annular body composed of an annular piezoelectric element 11.11 and an annular terminal plate 12 and is protruded downward from the backing plate 8 and the electrostrictive element 1, rubber inserted in its central hole, plastic Alternatively, the front plate 2 may be bolted by means of a wire ring 8a which is inserted through an insulating pipe 4 such as a screw or the like and screwed into a screw hole 22a drilled in the recessed bearing surface 22 of the front plate 2. The ring 22b protruding from the concave seating surface 22 and the screw hole 3b drilled in the backing plate 8 form an annular shape, while providing an insulating means 4 such as an insulating pipe in the central hole In addition to bolting, although not shown, it is possible to seat on the outer end faces of the recessed bearing surface of the front plate and the backing plate Forming another portion, inserting the recessed seat surface of the front plate, the electrostrictive element, and the central hole of the backing plate 8 and securing another bolt with a bolt head and a nut which are seated at the portion. In the case of using other tightening bolts, the outer shape of the eight persons shall be the width of the front plate as a side. The formation facilitates the processing of the recessed bearing surface of the front plate. In addition, the height from the upper end face of the front plate and the back plate laminated together with the electrostrictive element on the recessed seat surface of the front plate to the irradiated surface of the front plate is also an integer of through λ / 2 described above. The dimensions in the direction of height and thickness are not particularly limited, but it is preferable that the center in the thickness direction of the electrostrictive element be located at a portion that is an integral multiple of λ / 2. [Effects of the Invention] The Langevin-type vibrator of the present 04-05-2019 3 invention has the above-described configuration, and as an ultrasonic vibration device for a long and narrow area, the acoustic load of the electrostrictive element is transmitted to the front plate without waste, so irradiation is performed. Even when the area is expanded and the front plate is made particularly long, there is also an oppositely extending oppositely formed in the transverse axial direction, which is formed via the deep groove and the laminate of the electrostrictive element and the backing plate on the recessed seat surface of the front plate. The transmission hole in the direction perpendicular to the horizontal axis is blocked by the through-hole drilled in the direction perpendicular to the horizontal axis, and it is a through-hole which is not cut out to the upper or lower end face and is connected in a bridge shape Since ultrasonic waves can be irradiated uniformly from the irradiated surface without causing bending to this part and electrostrictive elements can be arranged in parallel according to the required output, various types of ultrasonic vibration are used. Targets equipment, especially rectangular scissors Cleaning tank, or a long linear surface of plastics using ultrasonic Kueruda to weld exhibits the console effect. [0002] Brief description of the drawings [0003] FIG. 1 shows a basic aspect of the Langevin type vibrator according to the present invention, FIG. 1A is a top view, FIG. 2B is a longitudinal sectional view taken along the line A in FIG. Fig. 8 shows another embodiment extended in the horizontal axis direction, wherein Fig. A is a top view, Fig. B is a longitudinal sectional view taken along the line of A of Fig. 8 and Fig. 8 is a Lange of the present invention according to the present invention. Pan type vibrator is shown, A figure is a top view, B figure is a vertical cross-sectional view in the Haar line of A figure, and A 4 and B are electrostrictive elements and backing on the concave seat surface of the front plate respectively. It is a longitudinal cross-sectional view which shows the other method of laminating ¦ stacking and fixing a board. DESCRIPTION OF SYMBOLS 1 ... Electrostrictive element, 2 ... Front plate, 21.21 ... Opposite part, 21a + 21a ... Through-hole, 22.22 ... Recession bearing surface, 8, 8 ... Backing board patent Assignee: Nippon Specialty Ceramics Co., Ltd. n Upper line □ Agent Ikumi Takashi 1t, 2 ° Fig. 1 Fig. A Fig. 1 B # 14 FIJA 11 22 a 1 22 Fig. 4 B / l \ \ \ 04-05-2019 4
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