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JPS5356815

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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 JPS5356815
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a conventional
carbon-type microphone, FIG. 2 is a longitudinal sectional view showing an embodiment of the
microphone according to the present invention, and FIG. 4 is a perspective view of the contact
ring, and FIG. 5 is a partial exploded cross-sectional view showing the mounting state of the
contact ring. 31 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 fixed electrode,
42 и и и и и movable electrode, 43 и и и carbon powder, 44 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 Back cover, 50.
иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
ииииииииииииииииииииииииииииииииииииииииииииииииии from a protection plate;
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a
carbon-type microphone with the structure of carbon-type cocoons having carbon 1.crclbar..cndot. Powder interposed between the movable electrode and the fixed electrode. It is
configured as shown in FIG. That is, in the figure, the frame 1 is a frame in which the outer frame
2 and the inner frame 3 are divided by a circle, and the spacer 4 is interposed between these two
ministries-carbon in the inner relief 3 via the silk washer 5? IL! In addition to 6 units of integral
21+ ? ? 8 etc., o 4 pairs of electrodes 7 are supported on the 1 ? silk washer 5 and said fixed
electrode 9 is provided with a fixed electrode terminal 8 for the main chamber insulation. 1 is
added to the power, and the power is-j-4 q] between the electrokinetics 7 and 1 constant
discharge 9 is filled with ash powder 1 () or? ??? In the outer periphery of the upper 6
tortoise-shaped tortoises 9 fixed to the outer edge of the upper 9 tortoise 9 (J and then contact
Q12 or anti-corrosion 1., l 2 B self inner frame, I There is one force on the front side of the upper
sushi frame 1 center = t + V above crl movement 1! A diaphragm 13 fixed to the pole 7 and
supporting the outer peripheral edge to the outer frame 2 is provided, and a first back air
chamber 14 is formed between the frame 1 and the rear side of the frame 1 A pack cover 15 is
provided in which a metal plate is bent and the center J is joined to the contact ring 12 and the
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outer peripheral edge is joined to the outer frame 2Fc, forming a second back air chamber 16
with the frame 1 You The first and second back air chambers 14 ░ 16 communicate with one
another by means of a sound slit 11 comprising cut-in portions provided at equal intervals in the
spacer 4. A movable 'iL other terminal 18 is provided in a protruding manner in part. In addition,
a moisture proof film 20. The peripheral edge portion of the protective plate 21 is joined to the
outer peripheral wall of the outer frame 2, and the upper cover 1 is simultaneously crimped and
fixed. The lead wire and the like are connected to the fixed electrode terminal 8 and the movable
electrode terminal 18 respectively, but the electrical connection between the movable electrode
insulator 18 and the i) moving electrode 2 is a pack. It is very difficult to electrically connect
these parts at the same time as assembling, although it is necessary to use the cover 15, the
shield plate 21 and the diaphragm 13 In addition, the acoustic slit that connects the first and
second back air chambers is divided by the frame and formed by the spacer interposed between
them. In addition, positioning of each part at the time of assembly is difficult, the assembly
operation is very troublesome, and the number of parts causes a cost increase.-This invention is
based on the above circumstances. , The purpose is the movable electrode Is intended to provide
a transmitter capable of decreasing the electrical connection is reliably made while a simple
configuration yet parts of the conductive path between the movable electrode terminals
simplification of assembly work.
Hereinafter, the present invention will be described with reference to an embodiment shown in
the drawings. In FIG. 2, reference numeral 31 in FIG. 2 is a frame made of an insulating material,
and a peripheral wall 32 is integrally provided at this peripheral portion. A through hole 35 is
formed in the central portion of the frame 31 and a suitable number of through holes 36 are
formed in the peripheral portion of the frame 31. In addition, a fixed electrode 39 having a
recessed portion 38 is provided in the through hole 35 и 5 ^ + 5) 1 via an insulator 37. The upper
edge portion of the insulator 37 has an opening of the recessed portion 38 In order to close the
part, a cotton wadding / girder 40 is assembled. The silk washer 400 is interposed between the
frame 31 and the insulator 31 and has a gap communicating with the through hole 36 in a part
of the insulator 37 and the solid foot 39. An acoustic slit 41 is provided. In addition, a
hemispherical movable turtle & 42 is attached to the central portion of the silk washer 38, which
is spaced apart from the fixed electrode 39 at the top, and carbon is contained in the recessed
portion 38 of these two electrodes 39.42ii ". The center part is fixed to the pole 42 on the front
side of the 7 frame 31 and is provided with a diaphragm 44 joined to the outer peripheral edge
or the peripheral wall 32 to the frame 31 And a first back air chamber 45 is formed
therebetween. The rear side of the frame 31 is provided with a puncturing cover 46 integrally
formed of a synthetic resin material 410. The pack cover 46 has a diameter substantially equal to
that of the frame 31. The central portion is opposite to the fixed electrode 39, and the peripheral
portion is opposed to the peripheral wall 32 of the frame 31, and a second back air chamber 47
is formed between the 7th frame and the third frame. Furthermore, between the central portion
of the back cover 46 and the fixed electrode 39, there is interposed a fixed electrode terminal 48
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which has a ring shape and which protrudes outward through the lock cover 46 at a part thereof.
5, fixed by caulking by the camp 49 of 39, the peripheral portion of the bank cover 46 has a ring
shape as shown in FIG. 8 and is a movable electrode terminal in which a plurality of cut-andraised pieces 50. 51 is fitted, and a projecting piece 52 which penetrates the puncturing cover
46 and protrudes to an external force is integrally provided at a part of the fitting. The movable
electrode terminal 5 is interposed between the frame 310 and the peripheral wall 32. On the
other hand, the contact ring 53 as shown in FIG. 4 and FIG. 5 is fitted to the peripheral edge
portion of the diaphragm 44, and a plurality of cut-and-raised pieces 54... It is done. A protective
plate 56 is bonded to the contact ring 53 on the outer side of the moisture-proof film 55 и ? 1 +
?1 and facing the diaphragm 44, and the peripheral wall 57 of the protective plate 56 is a
frame. 31 is fitted. , -1 Further, the inner peripheral wall of the peripheral wall portion 57 is
joined to the above-mentioned + =] moving electrode terminal 51 and the contact ring 53, and
the end edge portion is spinning so as to be engaged with the peripheral portion of the abovementioned hook cover 46 It is fixed by caulking by processing.
Therefore, the above-mentioned oJ moving electrode terminal 5 and the cut-and-raised pieces
50... 54 provided on the contact ring 53 are configured in this manner so that they are pressed
against the inner surface of the peripheral wall 57 of the sampler plate 56 The feeder connects
the lead wire to the fixed electrode terminal 48 and the slide terminal to the other terminal 51 so
that the ?T11 1 electrode terminal 51 can be moved through the sampler plate 56, the contact
ring 53 and the diaphragm 44. A conductive path to the electrode 42 is obtained, and the fixed
electrode terminal 48 is provided with a conductive path directly conducted to the fixed
electrode 39. As described above, this invention is provided with cut-and-raised pieces on the
moving electrode terminal and the contact ring, and all the above-mentioned cut-and-raised
pieces are brought into pressure contact with the inner 8 walls of the retaining plate fitted on the
outside. As a result, the mechanical connection at the time of assembly is simultaneously
achieved with four electrical connections, and there is no risk of contact failure. Furthermore, the
reduction in the number of parts makes it structurally simple and can facilitate the assembly
operation. Therefore, automatic assembly, which has conventionally been considered difficult, is
also possible, and significant cost reduction can be achieved.
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