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BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are a perspective view and a sectional
view showing an example of the construction of an ultrasonic transducer according to the
present invention, and FIG. 3 is an explanatory view of a cavitation accelerated abrasion test
method, FIG. These are explanatory drawings which show the relationship of abrasion time and
the thickness of a plating layer about the ultrasonic transducer | vibrator which concerns on this
invention. , 1 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и nickel plating layer .... Chrome plated layer.
DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the use of an
ultrasonic humidifier, for example, as a rooster. Recently, ultrasonic humidifiers are widely used
to adjust the humidity in the room for management. That is, the sound of the ultrasonic wave
JIIsIIlIFi using the electrostrictive vibrator is quiet and electrically safe, and it is a rounding that
can be easily obtained by ? S + injection without raising the water temperature. However, the
electrostrictive vibrator of the ultrasonic humidifier has a disadvantage that the layering
efficiency is lowered due to the movement during the darkest period. ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ?? II ? ? ? ? ? ? lx lx lx lx lx lx lx lx
lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx lx, ? / lx-/ 22 2, 2-Elon 1 As a result, the silver
electrode is worn out, so that the atomization efficiency is significantly reduced in several tens to
several hundreds hours of operation. Therefore, it has been tried to coat soda glass, resin, or
titanium foil etc. on the silver electrode surface of the electrostrictive vibrator, but the
atomization efficiency drops in a few thousand hours at most and the reliability also becomes
reliable. Sex is also insufficient six and nine. The present invention aims at providing an
ultrasonic vibrator with a long life which prevents the silver electrode wear of the electrostrictive
vibrator during a long operation, and the present invention provides the electrostrictive vibrator
according to the present invention. Of the pair of silver electrodes, the direction of the silver
electrode in contact with at least water is straight Il! Alternatively, it is an ultrasonic transducer
formed by coating a rhodium plating layer or a chromium plating layer via a nickel plating layer.
By the way, the silver electrode wear of the electrostrictive vibrator according to the abovementioned cavitation age phenomenon is expressed by the following equation. 11t =--?CIB 51 =
Erosion degree, H: Vickers hardness, 0 votes Decay, ?, / = Determined, but a // Hs> IC (2) From
the above equation, it indicates that the wear with large Vickers hardness is less It is effective to
prevent the deterioration of the service life by providing a metal layer t of hardness on the
surface of the silver electrode of 9. Hereinafter, the present invention will be described by way of
examples. One embodiment of a coulomb vibrator according to the present invention is
constructed as shown in perspective and in cross section in FIG. 1 (b). That is, the electrostrictive
vibrator (support) is used to attach the piezoelectric material (one of the two of the six pieces of
the silver electrode (2) which is rolled up to the rear part of the 6) and the other-to the silver
form @@. A pair of silver electrodes are provided by the etc.-Furthermore, electrolytic plating is
applied on at least one of the silver contacts @ @ ? in contact with water, and a rhodium plating
layer (4 is formed). . It is constructed as shown diagrammatically in a perspective view, s2all (b)
and s2) with respect to other embodiments of the present invention. 9 electric jilt motion (? is a
piezoelectric material (a part of the direction of one of the 6 1 1iee into the back 1liie run chain
electrode (2), ? 9 other silver electrode (?) The burn-in is carried out at a pair of f electrodes.
Next, apply at least a silver electrode @@ on top of the silver electrode @@ 6-Kelmex layer (2) to
contact with water {circle over (1)} (2), and further, on the nickel plating layer (6) Because the
season is provided. The wear resistance of the vibrator configured in this way can be judged as a
part as follows. That is, as shown in FIG. 3, the vibrating portion of the ultrasonic processing
machine (The end of the horn (8) which is lost to ? is electrostrictive vibrator (1) t? Adhesively
fix the plating layer to the outside with a strong adhesive after 6) After the tip of the horn (2) is
housed in the container (9), press water 0 ** or r))) or lower side The vibration part (? is
operated, and the loose wear time is taken to the forced wear in the surface direction of the
plated layer part by the cavitator 1 ? continuous wear test. 1 'In this case, the plating layer
portion is provided with a rhodium plating layer as in 41A (1) (A), and the plating layer portion
as a plating layer portion is provided with a matting layer on a nickel plating layer; The results
are shown as (B) of. Thus, as described above, when incorporated into an ultrasonic humidifier
exhibiting a durability of 1 minute to 2 minutes or more in the cavitation accelerated wear test,
the required atomization efficiency is achieved for 10,000 hours or more. (2) As described above,
the present invention provides a strabismic layer sound tII oscillator society which has a long life
span. 4 @ 1lli easy * W 11th! a, No. 28 shows an example of the construction of the ultrasonic
transducer according to the present invention ms and -1, 113 ? shows the cavitation accelerated
abrasion test method 4 m of the cavitation accelerated abrasion test method according to the
invention 5, the ultrasonic transducer according to the invention The relationship between the
wear time and the thickness of the plating layer is * a-. 1 иии Electrostrictive vibrator ?? 2, 3 иии
Silver electrode y 4 иии Rhodium plating layer 5 иии Nickel layer middle layer иии Combe middle layer
(@ @! II) 1st grade, Ryuji Tomioka Akira (b1 person) to (2)? ? 7 (H) (b) 4 (n-577 'juice 2 (1) (0
L) ? и s ? / 'Soup J ? / / 1 ? R, 226 ? 8 4th A A 1 wear when 1' f T]] 01-/ 23461 ░ C Link 4
Meroli 4 (P) Shinke 2v Eight Soyabe 1! 122,678 companies 6 и и Mi "n-II p 5, list of attached
documents (1) one letter of attorney (2) one statement (3) one drawing (4) request duplicates,
one inventor of the above, Utility model registration applicant or agent (1) inventor 7.7, ?, ?, ?.
?? ??? ??????????? 'L' Kanagawa Prefecture Yozaki Yamako Ward Komukai
Toshiba Town 1 Tokyo Shibaura 'IIL Ki Inc. General Research Institute Insider Caussian V Nome
? Shi-Konsho Shoji 11 Tofura Forest 1) Positive-~ 1, same-place Tamura Shigetaka ? Village
Taika (2) Agent Tokyo Ushiyukicho, Chiyoda-ku, Tokyo Tokyo Shibaura Electric Co., Ltd. Tokyo
Office (7568).
? et al-/ 2212 j '
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