JPS627304Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a holding structure in a grasping type ultrasonic processing device, such as an ultrasonic tartar remover, an ultrasonic vivisection cutter, etc., in which the main body is held and the required ultrasonic processing is performed. It is. An explanation will be given below using an ultrasonic tartar remover as an example.

In FIG. 1, reference numeral 1 denotes a Languevent type ultrasonic transducer, in which a pair of annular piezoelectric elements 1 are electrically opposed in parallel via an annular terminal plate 1b as is known.
a, 1a are sandwiched between a pair of metal vibrating bodies 1c, 1d, and these laminates are inserted into the piezoelectric element and the inner surface of the terminal plate in an electrically insulating manner, by means of a center bolt 1e whose both ends are screwed into the metal vibrating bodies. The vibrating body 1d is integrally fastened, and the vibrating body 1d is horn-shaped so as to increase the amplitude at its tip. Furthermore, inside this vibrator 1, there is a shaft hole 1f that opens from the outer end surface of one vibrating body 1c to the tip surface of the other vibrating body 1d along the center line, and a shaft hole 1f that opens along the center line from the outer end surface of one vibrating body 1c to the tip surface of the other vibrating body 1d. 1g of metal pipe planted to communicate with hole 1f
Equipped with. Reference numeral 2 denotes a tartar removal blade detachably attached to the tip surface of the horn-shaped vibrating body 1d of the ultrasonic vibrator 1 by screw connection, and has a jet hole 2a inside thereof communicating with the shaft hole 1f of the vibrator. Reference numeral 3 denotes lead wires connected to the terminal plate 1b in contact with one electrode of the piezoelectric element of the vibrator 1, and the metal vibrating body 1c in contact with the other electrode, to which a required alternating current signal is applied from a high frequency oscillator (not shown). to excite the oscillator. Reference numeral 4 denotes a liquid supply pipe connected to the metal tube 1g of the vibrator, which conveys a suitable liquid such as water to the shaft hole 1f of the vibrator and squirts it out from the hole 2a of the tartar removing blade 2. Reference numeral 5 denotes a gripping case made of plastic or the like that surrounds the vibrator so that a part of the horn-shaped vibrating body 1d of the vibrator 1 and the blade 2 protrude outward, and mechanically holds the vibrator. The configuration is almost the same as that of .

The present invention is characterized in that the ultrasonic transducer 1 is held by the grip case 5 using the following configuration.

That is, as shown in the figure, grooves 1c' and steps 1d' are formed as necessary on the main parts of the outer peripheral surfaces of both vibrating bodies 1c and 1d of the ultrasonic transducer 1, and elastic rubber,
Buffer rings 6a and 6b made of a material with a large vibration damping effect, such as elastic plastic, are fitted, and an annular stopper 5a protruding from the inside of the lower end of the grip case 5 is engaged with one of the buffer rings 6a. Then, a screw plug 7 that locks with the other buffer ring 6b via a cylindrical spacer 8 is screwed onto the upper end, and the ultrasonic transducer 1 is mechanically inserted between the annular stopper 5a and the screw plug 7. Alternatively, as shown as another example in FIG. A stepped stopper 5a' that locks onto the ring 6b is formed, and an ultrasonic vibrator is mechanically held between the screw plug 7' and the stopper 5a', and the positions of the screw plug and the stopper can be adjusted up or down. It is the same as the case of FIG. 1 above except that it is reversed.

In the embodiment shown in FIG. 1, the cylindrical space 8 can be omitted by extending the lower end of the screw plug 7 and directly engaging the buffer ring 6b.

Conventionally, the holding structure of this type of ultrasonic machining equipment has been a flange integrally formed on the outer periphery of the metal vibrating body of the Languevent type vibrator at the position of the vibration node, and a flange provided on the inner surface of the gripping case. However, since the joint between the vibrator and the gripping case has a high rigidity, vibrations from the vibrator leak into the gripping case, reducing efficiency. Since expensive flange processing is required, a rise in price is unavoidable, and furthermore, it is very troublesome to assemble the vibrator to the gripping case.

However, as described above, in this case, a buffer ring is fitted to the main part of the outer circumferential surface of both metal vibrating bodies of a Languevent type vibrator, a stopper is provided at one end of the grip case to engage with one of the buffer rings, and a stopper is provided at one end of the grip case, and the other end is provided with a stopper that engages with one of the buffer rings. The structure consists of a screw plug that locks with a buffer ring, and the vibrator is inserted through the upper and lower buffer rings.
Because it is held in the gripping case, the holding state is extremely stable, and vibrations from the vibrator are alleviated and absorbed by the damping effect of the buffer ring, reliably preventing a drop in efficiency. It has the effect of overcoming all the drawbacks of the conventional method, such as being simple.

Although the above embodiment is intended for an ultrasonic tartar remover, other devices such as an ultrasonic vivisection cutter, an ultrasonic polisher, etc., may also be used, such as a lunge van in which an appropriate processing tool is coupled to the tip surface of one metal vibrating body depending on the purpose. Needless to say, the present invention can also be applied to a type of vibrator that uses a molded vibrator and is held in a grip case.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view showing one embodiment of the present invention, Figure 2
The figure is a longitudinal sectional view showing another embodiment. Note that the same numbers in the figures indicate the same parts. DESCRIPTION OF SYMBOLS 1...Language van type ultrasonic transducer, 1c, 1d...Metal vibrating body, 5...Gripping case, 5a, 5a'...Stopper, 6a, 6b...Buffer ring, 7, 7'...
Screw plug.

Claims (1)

[Scope of utility model registration request] The ultrasonic transducer is composed of a Languevant-type ultrasonic transducer with a suitable processing tool coupled to the tip surface of one metal vibrating body, and a gripping case surrounding the ultrasonic vibrator from the outer periphery, and the outer periphery of both metal vibrating bodies of the vibrator is A buffer ring is attached to the main part of the gripping case, a stopper is formed at one end of the gripping case to engage one of the buffer rings, and a screw plug is screwed to the other end to engage the other buffer ring. A holding structure for a grasping type ultrasonic processing device, characterized in that an ultrasonic vibrator is mechanically held between a stopper and a screw plug.