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JPS50149024

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DESCRIPTION JPS50149024
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing one
embodiment of the present invention, FIG. 2 is a perspective view of the amplifier holder of the
same embodiment, and FIG. 3 is an amplifier showing another embodiment of the present
invention. It is a perspective view of a holder. 1 и и и и и и и и Microphone unit, 7 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 amplifier holder Leg through groove, 14 ииииии Amp unit
room. # 2 Figure 3 3-57
DETAILED DESCRIPTION OF THE INVENTION The improvement of the electret microphone
formed by integrally forming the microphone unit portion and the amplifier portion of the
present invention company. In general, a cylindrical amplifier holder is provided at the
connection between the microphone uni-L-shaped insertion unit and the substrate provided with
the amplifier unit. It forms an amplifier part room which accommodates a part. However, when
assembling, the FM of the amplifier section! It is necessary to connect the gate leg of (1) and the
back electrode gate terminal of the (1) -mytarophone unit, or the connection between the both is
made between both ends in the amplifier holder. The connection work was difficult. For this
reason, the length of the back electrode gate terminal and the gate leg of F ? T is equal to the
length of both ends of the amplifier holder) 41 and connected. However, when connected in this
way, the feed gate terminal is deeply embedded in the amplifier chamber, and the gate leg of
r11? is slackened in the amplifier chamber. Therefore there is a danger of shorting, and Fll? The
extra force applied to the gate legs, 'W pole gate terminals and their connection parts caused
contact failure and deterioration. The present invention has been made in view of the above
circumstances, and the object of the present invention is to provide an electret my ? -rophone
which is easy to assemble and has no risk of shorting and does not cause contact failure or
deterioration. It is. Hereinafter, this invention (2) is demonstrated according to FIG. 1 and FIG. In
FIG. 1, reference numeral 1 denotes a microphone unit, which is provided with a cross 3 over the
upper surface opening of a cylindrical capsule 2 and is provided with a back 3 supporting the foil
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4 facing the gloss 3 and the back pole 5 The pole holder 6 is accommodated. ?????????
It is an amplifier section consisting of 8 mag and provided on the base f9, and its Flt? The 13
gate legs 10 are connected without slack to the back electrode gate terminal 11 projecting short
from the lower surface of the back electrode 5. Reference numeral 12 denotes an amplifier
holder having nine cylindrical shapes made of thermoplastic resin such as ABS resin, and having,
for example, leg through grooves 15 formed by being split in both end directions. The lower end
is in contact with the upper surface outer peripheral portion of the substrate 9. That is, the
amplifier holder 12 is placed between the substrate 9 and the microphone unit 1 KF1? An
amplifier section chamber 14 is formed to accommodate 8 and so on.
The microphone unit 1 and the amplifier unit 7 are housed in an amplifier case 15 and
integrated integrally with each other. The inner diameter of the amplifier case 15 is equal to that
of the amplifier (3) ? -Q holder 12, and the inner surface of the 7 ? b case 15 and the outer
surface of the amplifier holder 12 are the same. Phase and '-are close contact I! ?????
Therefore, to assemble the above configuration, first, the amplifier unit 70 Fi! ? The lengths of
the gate legs 10 and the electrode gate terminals 11 are made equal to the lengths of the both
ends of the amplifier holder 120, f or slightly longer, and the two are connected by soldering. At
this time, even if the solder at the connection portion is carelessly spread, since the amplifier hole
112 is in close contact with the amplifier case 15, it is impossible for the solder to contact the
amplifier case 15 and cause a short circuit. The amplifier holder 12 is positioned at the
connection between the microphone unit 1 and the base 9 so as to accommodate the inside of
the through hole # 113 to the 'iIi' pole gate terminal 11 and the gate 1111 110 of the FL?8.
Next, the amplifier unit 7, the amplifier holder 12, and the microphone unit 1 are sequentially
press-fitted into the amplifier case 15, and the assembly is completed by kneading. As described
above, after connecting the back electrode gate terminal 11 and the gate leg 10 of Flag, the
amplifier holder 12 can be provided at the setting position of the dark of the microphone (4) the
rophone unit 1 and the amplifier unit 7. While this makes the assembly extremely easy, the back
electrode gate terminal 11 should be short and FW? The length between Q and the gate leg 10 is
as smooth as I. Even if these two are connected, they can be connected in any way, so as shown
in FIG. 11 without getting deeply in, and FI? The gate legs 10 of 8 also appear to be slackened in
the amplifier chamber 14, so there is no danger of shorting, and the FW! The contact failure and
deterioration can be prevented by putting no extra force on the contact between the gate leg 10
and the IIl gate terminal 11 and the contact portion between the two. In addition, this invention
is not limited to the above-described embodiment, and can be changed in various ways at the
points without losing the gist. For example, in the above-mentioned actual rod example, the
amplifier holder has the leg through groove formed to be split in the direction of both ends of the
amplifier holder. As shown in the above, both ends (5) of the direction (a part of the groove may
be formed with a notch and a grooved groove ? may be formed).
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In this case, although it is necessary to connect the gate leg of the PI te and the back electrode
gate terminal through the inside of the amplifier holder 21, the amplifier holder 21 is inclined,
and the gate leg of F ? ? is taken out from the lowermost portion 22a of the through hole ?.
By connecting this to the back electrode gate terminal, the same effect as that of the above
embodiment can be obtained. As described above, this invention is characterized in that the
cylindrical amplifier holder in which the leg through grooves are provided in both end directions
between the myg rophone unit and the base provided with the amplifier is arranged. It is possible
to assemble without taking extra length of the back electrode gate terminal of the amplifier unit
and the gate leg of PI? of the amplifier unit connected with it, thus making the assembly easy.
As a result, there is no practical danger such as short-circuiting, and further, contact failure and
deterioration can be prevented.
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