close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JPS5544207

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 JPS5544207
Description l1 Title of the Invention
Method of manufacturing electret microphone
3 Detailed Description of the Invention The present invention relates to a method of
manufacturing an electret microphone in which the electret diaphragm can be attached to the
case main body indiscriminately without deteriorating its characteristics. Conventionally, as
shown in FIG. 1, when manufacturing a microphone enit, the microphone capsule 2 is housed at
the end of one internal force of the case main body l, and the invidance conversion amplifier is
held at the other end. The printed wiring board 3 is accommodated, and the microphone capsule
2 and the printed wiring board 30 are set by the cylindrical spacer 4. In this first case, one end
IJI of the case main body 1 is bent in advance to insert the printed wiring board 3 from the upper
part, the printed wiring board 3 is engaged with this broken part, and then the spacer 4 is
inserted, Finally, the microphone capsule 2 is inserted. At this time, the upper end 1b of the case
body l is positioned at the center of the outer periphery of the microphone capsule 2, and in this
state, the upper end lb of the case body l is crimped to the microphone capsule 20M1m to Are
integrated, and the printed wiring board 3 and the spacer 4 are fixed inside. However, in the
electret microphone made by this conventional method, the engagement force between the case
1 and the microphone capsule 2 is weak. 1 For example, if the printed wiring board 3 is strongly
pushed up, the microphone capsule 2 is one end page. There is a problem that it is easy to cause
an accident that may come out, and there is a lack of reliability. The microphone capsule 2 has an
internal structure as shown in FIG. That is, as the case 5, a turtle that has its upper end 5 m bent
inward fil K to be open at its lower end 5 bri is used. From the open side of the case 5, insert the
ring 7 to which the electret swing IIjJ plate 6 is attached, then insert the spacer 8, and finally
(insert the back pole holder 9 holding the back pole, and in this state lower end 5b The ring 7,
17-04-2019
1
the spacer 8 and the back electrode holder 9 are fixed inside the case 5 by caulking on the outer
end face of the back electrode holder 9. According to the conventional manufacturing method, in
order to integrate the microphone capsule 2 and the case 1 (the additional force is applied to the
body of the microphone capsule 2, for example, the ring 7 is wedged, and the diaphragm 6 is
deformed and the microphone is The problem is that the characteristics of the product
deteriorate and the yield of the product decreases. The ground of the amplifier-tl is absorbed in
the view of the case body 1 and the case 5 of the microphone capsule 2 and the clamping force is
not so strong, so the ground @ ts is easy to remove and contact unnecessary accident-II occurs
There was also a drawback that it was easy. In other words, unless the dimension n degrees of
the case body 1 and the microphone capsule 2 are increased, the clamping can not be performed
well.
This invention does not degrade the characteristics of the microphone! It is an object of the
present invention to provide a method for producing an electret 1 electronic phone by which an
electronic phone part can be firmly bonded. Hereinafter, a method of manufacturing an electret
microphone according to the present invention will be described in detail based on the
embodiment thereof with reference to FIG. 4 and the following drawings. In the present
invention, the formation of the case body 1 has one feature and is formed as follows. That is, as
shown in FIG. 4A, a tip-like body having a flange portion 10 at the outer peripheral edge of the
opening end portion is formed by drawing from a metal flat plate such as an aluminum flat plate.
Subsequently, the flange portion 10 is cut off and removed using a cylindrical cutter 11 having a
circular diameter slightly larger than the outer diameter of the tip-shaped body as shown in FIG.
4B, and the bottom surface Ks of the tip-shaped body is also removed. A circular hole] 3 is
formed in the center portion leaving the new curved portion 12. In this case, the tapered surface
of the inner surface on the open side, which is formed along with the formation of the flange
portion for drawing, is added so as to be held. Therefore, on the open surface side of the case
body 1, there is formed a tapered surface 14 whose diameter gradually increases from the inside
to the outside. The printed wiring board 3 is inserted from the upper end of the case main body 1
and engaged with the bent portion 12 of the bottom to fix it. Further, the cylindrical spacer 4 is
fitted and inserted into the circular side portion of the printed wiring board 3 in the case body l.
The microphone capsule 2 is accommodated on the spacer 4. At the time of voice, the ground -tl
of the amplifier of the printed wiring board 3 is drawn between the six circumferential surfaces
of the case main body 1 and the outer circumferential surface of the case 5 of the microphone
capsule 2. Finally, the open side end of the main body case 1 on which the tapered surface 14 is
formed is crimped and fixed to the outer end surface of the microphone capsule 2 thus fitted. In
this case, in order to clamp the upper end of the main body case 1, it is convenient to use a
clamping jig as shown in FIG. In this caulking jig, the main shaft 15 is mounted (5) on a mail
board or the like and rotated, and the sub shaft 16 is rotatably mounted at a position away from
the axial center of the main shaft 15 at the tip. The counter shaft 16 is attached with its tip
inclined toward the shaft center of the main shaft 15, and the main shaft Is is rotated to perform
17-04-2019
2
clamping from a die ill7 vc attached to the counter shaft 16 market. By the rotation of the main
shaft 15, the sub shaft 16 performs a so-called grinding operation. The main shaft 15 is lowered
downward while moving the countershaft 16 all the way down with the caulking part Vc of the
main body case l on this day wA17 and the white part 17 is rotated along the upper end
periphery of the main body case l to pressurize Thus, the upper end of the main body case l is
crimped.
The numeral 18 is a bad smell that holds the main body case 1 to be crimped. As described
above, according to the method of manufacturing the electret microphone of the present
invention, the case body 14 is formed with the tapered surface 14, and this portion may be
crimped with a relatively weak force due to the presence of the tapered surface 14. Therefore,
there is no risk of deformation of the internal parts tube and deterioration of the i microphone
characteristics, and they are strongly connected because they are bent in a circle. (6) EndPage:
Since the upper end of the main body case l is tightened along the two bent portions, there is a
small gap between the microphone capsule 2 and the main body case l, which enables secure
tightening with certainty and dimension storage Setting becomes easy. (Because of the length of
grinding on earth @ 11, the contact is good, and the upper @ part of main body case l is a part of
the front of microphone capsule 2 (as it is tightened σ, its force is It works in the axial direction
of the body and is strong, and can maintain the earth edge t1 between them to maintain the
stable b @ stable for a long time. Because of the presence of the tapered surface 14 ', the
variation of the bulge of the body of the microphone capsule 2 is somewhat varied, and the
insertion into the main body case 1 becomes easy. Furthermore, since the tapered surface 14 is
present, when the upper end of the upper end gvC main body case 1 of the capsule 2 is clamped,
the dovetail does not occur without applying the pressure of the pole 1 to the capsule 2. In
addition, since the upper end of the main body case 1 is crimped toward the upper surface of the
capsule 2, the clamping force acts in the axial direction of the capsule 2, and from this point as
well, the capsule 2 is not deformed and an improvement in yield can be expected. Furthermore,
the manufacturing cost can be reduced by continuously and automatically creating a precise size
of (7) by using a cylindrical cutter and drawing from a tipped flat plate as a main body case. X,
when caulking using the caulking jig described in the key, it is slid and caulked by the white part
17, so there is no spring back of the bent part, and ca. , Between the capsule 2 and the main body
case 1 can be brought into close contact with each other. Furthermore, since the upper surface of
the white portion 17t1 main body case 1 is axially pressed in the axial direction, unnecessary
force is not applied to the capsule 2. As shown in FIG. M6, the shape of the case 5 of the capsule
2 used in this case is convenient to form an annular step 19 at the bent portion of the front face.
The presence of the step 19 reinforces the strength of the front surface of the capsule 2 and
makes it possible to prevent this deformation. When the lower end 5b of the capsule 2 is
crimped, a tensile force is given to the upper surface and the bent free end 20 is bent back, so
that the empty 1ila volume of the front chamber 21 formed in front of the diaphragm 6 changes.
It is also possible to prevent the change in the characteristics of one ink.
17-04-2019
3
As described above in detail, according to the (8) method of the present invention, the
dimensional accuracy lI! vr Characterization of microphones-It is possible to make small
electrified stable stable electret microphones over a long period of time with a low
manufacturing cost without deteriorating characteristics of the microphones in a simple process.
Become.
4. Brief description of the drawings FIG. 1g is a cross-sectional view for explaining a conventional
example, FIG. 2 is a cross-sectional view for explaining a structure of a microphone capsule of an
electret microphone, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a crosssectional view for explaining the manufacturing method of the case main body in the present
invention, and FIG. 5 is a cross-sectional view showing an example of a caulking jig used in the
method of the present invention. It is a figure which shows an example of the shape of the case
of a capsule. Special applicant Applicants Star Electric Appliances Manufacturing Co., Ltd. Atsushi
Kusano ・ ・, ',',-(9) EndPage: 3
17-04-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
13 Кб
Теги
description, jps5544207
1/--страниц
Пожаловаться на содержимое документа