close

Вход

Забыли?

вход по аккаунту

JPS5018200

код для вставкиСкачать
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 JPS5018200
■ Electrode device for electret manufacturing device 特 願 Japanese Patent Application No. 4516874 [Phase] Application No. 45 (1970) February 28 @ inventor Watanabe Shoji Kawasaki City
Ku-ku-ku-ku 70 Yanagimachi Tokyo Shibaura Electric Co. 1 place Shibaura Electric Co., Ltd. 1
Tokyo Shibaura Electric Co., Ltd. General Research Institute 0 applicant Tokyo Shibaura Electric
Co., Ltd. Kawasaki City Shiho Kukawari District Kukawacho 72 [phase] Attorney Attorney Takeshi
Suzue 4, outside
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an
embodiment of an electrode device of an electret manufacturing apparatus, and FIG. 2 is a
sectional view showing a part of the electrode device shown in FIG.
The present invention relates to an electret manufacturing apparatus, and more particularly to an
electrode apparatus for applying a DC electric field to an electret material. Recently, electrets
have been attracting attention. This electret is manufactured by, for example, heating a dielectric
material and simultaneously applying a direct current electric field and then slowly cooling it
under a constant direct current electric field and removing the direct current electric field after
the temperature drops, it is permanent It is a dielectric having electrostatic polarization. Thus,
since such electret has permanent electrostatic polarization, it can be used as a direct current
power source for applying a voltage between the movable electrode and the fixed electrode in a
direct current power source, for example, a capacitor type transducer, and this electret is used As
a result, the power supply lead wire and the like can be omitted, and the microphones and
microphones using a capacitor type transducer can be simplified. By the way, conventionally,
after forming an electret into a large film-like electret, it is cut into small pieces and used.
However, when a force is applied to the electretized portion, distortion occurs in the portion and
the polarization surface charge density and the like fluctuate, so that the characteristics of the
04-05-2019
1
individual electrets become nonuniform. The present invention provides an electrode device of
an electret manufacturing apparatus made in view of the above-mentioned points, and by using
this electrode device, a large number of electrets can be manufactured with uniform
characteristics at one time. An embodiment of the present invention will be described below with
reference to the drawings. In FIGS. 1 and 2, 11 is a rectangular film-like electret material, and in
this case, a conductive layer 12 is formed on one surface of the electret material 11. Attachment
is formed. Further, on one surface side of the electret material 11, a corresponding rectangular
first electrode plate 13 in contact with the conductive layer 12 is disposed. On the other hand,
the second electrode plate 14 is disposed on the other surface of the electret material 11, and
this electrode plate 14 is formed in a corresponding rectangular shape and has a plurality of
projecting rectangular electrodes 15 on the opposite surface. ... Are provided at predetermined
intervals in the vertical and horizontal directions. Further, an insulating plate 16 is interposed
between the second electrode plate 14 and the electret material 11. In this case, a rectangular
hole in which the projection electrodes 15 are fitted in the insulating plate 16 17 ・ ・ ・ ・ ・
・ is installed. That is, in the insulating plate 16, the inner wall surfaces of the rectangular holes
17... Are in contact with the circumferential surfaces of the ridge electrodes 15 and interposed
between them and the electret material. That is, in the electrode device configured as described
above, when a DC voltage is applied between the first and second electrode plates 13 and 14,
each protrusion of the first electrode plate 13 and the second electrode plate 14 A DC electric
field is applied to the electret material 11 between the strip electrodes 15.
Therefore, when the electret material 11 is inserted into an electretization chamber (not shown)
and a DC electric field is applied in a predetermined atmosphere, the electret material 11 has a
plurality of rectangular electrets positioned at predetermined intervals [111111] EndPage: 18...
Are formed at one time. In this case, since the electrets 18... Are positioned at predetermined
intervals in the vertical and horizontal directions, the non-electretized portions between them are
cut as shown by dotted lines to obtain small electrets 18. Therefore, when such an electrode
device is used, a plurality of electrets 18 can be formed at a time on electret material 11, and in
this case, electrets 18 are formed at predetermined intervals in the vertical and horizontal
directions. By cutting the non-formed portion, it is possible to prevent the application of
unnecessary force to each electret 18 and to prevent generation of strain, that is, deflection of
polarized surface charge density, so that electret 18 of uniform characteristics is manufactured.
By the way, in the structure of the second electrode plate 14, the electric field is concentrated on
each end side of the ridge electrode 15, and the electret material 11 is interposed between this
portion and the first electrode plate 13. A spark may occur and damage the elm \ rl 111 111
cretted material 11. However, in the above-mentioned electrode device, the circumferential
surfaces of the projecting electrodes 15 are covered by the inner wall surfaces of the rectangular
holes 17 of the insulating plate 16 so that generation of sparks can be prevented, and damage to
the electret 18 is caused. It can be prevented. In the present invention, the first electrode plate
may have the same structure as the second electrode plate. In this case, of course, an insulating
04-05-2019
2
plate is also required on the side of the first electrode plate. As described in detail above, by
using the electrode device of the present invention, a plurality of electrets can be manufactured
with uniform characteristics at one time without breakage.
04-05-2019
3
1/--страниц
Пожаловаться на содержимое документа