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JPS5579184

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DESCRIPTION JPS5579184
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention,
and FIGS. 1 to 4 are schematic front sectional views showing the diaphragm device according to
the present invention and its relationship with a molding die. It is. 1 ииииииии Diaphragm ring, 2
ииииииииииииииииииииииииииииииииииии Base, 4 иииииииииииииииии Diaphragm.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm
arrangement in an electro-acoustic transducer (in particular, an improvement in the high-pass
characteristics of the diaphragm and a quick and simplified attachment to the diaphragm ring.
Heretofore, as a diaphragm-supporting diafurano ring for use in a microphone, one having a
ridge shape has been considered, but in general, a tongue-in-alian type 6 having an appropriate
rigidity and an iconogram. It is used. However, even in this tangential form) 1 ░ "░ 5. ?
'Ikongra 1 Anosize to lower the low resonance frequency, there are various problems to smooth
out the frequency characteristics to high frequency by kneading. For example, an ultra-compact
full-range dynamino bear. In the case of an eye-catcher, it is easy to raise at the edge portion, and
i'1. 'It is extremely difficult to prevent. Furthermore, in the connection structure to the
conventional dioram song of the dinoram, there is a tendency that the dispersion of the low-pass
resonant frequency and other characteristics are likely to occur, and a stable characteristic can
not be obtained. There was no way to compensate. In addition, the low-pass resonant frequency
and frequency characteristics slightly change depending on the material, thickness and other
molding conditions of the diaphragm, and it has been difficult to obtain with the same molding
die. The present invention solves the problems of the prior art, in particular, IJ'c, to improve the
frequency characteristic to extend to the high frequency lower than the low frequency resonance
frequency, Eno / Tokyo juice spring and various It is an object of the present invention to provide
a diaphragm device in a novel electro-acoustic transducer in which variations in the durability
can be compensated at the time of molding of the dinoram. And in order to realize such an object,
in the present invention, when the diaphragm and the diaphragm ring are simultaneously bonded
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1
and joined together, the inner diameter of the diaphragm ring is used for positioning of the
molding die. It is possible to set arbitrarily by using the frequency characteristic with low
frequency, the low frequency resonance frequency r, and the other inner diameter of the
diaphragm ring. An embodiment of the present invention will be described below with reference
to the drawings. FIG. 1 is a front view 1 @ of the diaphragm device according to the present
invention, in which the diaphragm ring 1 is formed to have an I-shaped ? cross section. ?? In
this diaphragm ring 1, the projecting piece 2 (thin side) on the side with a smaller inner diameter
a is formed sufficiently thinner than the base 3 (thick side) on the inner side larger than the inner
diameter a. The peripheral edge of is fixed by an adhesive.
In this case, even if the molding die of the lower part of the die 7 (3) ram 4 is pressed against the
diaphragm 4 and the diaphragm ring 1 as shown by the chain line, the air gap 5 is formed in the
lower part of the projecting piece 2 In order to force the ring-shaped notch 6 is provided 6 ░
and this mold DK against the thin mold for the diaphragm by blowing high-pressure air from
above, this mold D for the entire mold D (press with the military Like a diaphragm 4 ? give. In
order to improve the frequency characteristics of the diaphragm device and to lower the VC lowpass resonance frequency, it is possible to select the material, thickness, etc. of the thin plate for
the diaphragm 4 with an arbitrary G (C1 The inner diameter of the projection H2 can be realized
by selecting the different diaphragm ring 1 appropriately (и). Then, during the molding, the
adhesive present on the joint surface between the diaphragm ring 1 and the periphery of the
dinoram 4 due to the above-mentioned air gap 5 forms the outer surface of the diaphragm ring 1
(flow along the .tau. Can be cornered in advance to adhere. Thus, with a quick and smooth
molding operation (the (4) like this, an excellent diaphragm system has a desired frequency
characteristic). FIG. 2 shows another embodiment of the diaphragm device. In this case, slits 7
are provided at several places, for example, four places of the diaphragm ring 1, and the inside
diameter ?K of the projecting piece 2 of the diaphragm ring 1 and the periphery of the
diaphragm 4 are fixed by an adhesive. Also in this case, frequency characteristics can be
arbitrarily selected by using the same molding die 1 with different sizes of the inner diameter a,
and between the diaphragm ring 1 and the periphery of the diaphragm 4 As the junction is small,
it is possible to eliminate the variation in the low frequency imaging frequency characteristics
and to prevent the hail. Furthermore, by providing the slit 7 in the base 3 of the diaphragm ring
1, there is an advantage that the directivity of the microphone can be arbitrarily selected. As
another embodiment, what is shown in FIG. 3 and FIG. 4 can be considered as another example of
what is shown in FIG. 1 and FIG. In FIG. 3, dia (5) fram ring 1 is reverse to the above relation and
the inner child ? of 9.73.71 / 1 is in the lower side, and the periphery of diaphragm 40 is the
above-mentioned base 3 It is joined to the upper surface. Then, the molding die is projected
upward l / c from the projecting piece 2 so that the edge of the die rack A4 does not contact the
diaphragm ring 1.
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Then, when the diaphragm 4 is formed, an air gap 6 is formed which prevents the adhesive
interposed between the projection h and the projecting piece 2 from adhering to the molding die.
In such a device, the frequency characteristic etc. of this diaphragm device can be arbitrarily set
in the same manner as described above by arbitrarily selecting the diaphragm ring 1 having a
different inner diameter of the base 3. Of course, in that case, the same mold can be used. FIG. 4
shows a diaphragm apparatus having a diaphragm ring 1 which can be obtained inexpensively
and easily, in which the two inner diameters ? and b of the dwarf D are obtained simultaneously
by, for example, inclined surface molding such as cutting and molding. is there. Even in such a
case, the peripheral portion of the diaphragm 4 is ?-attached so that the inclined surface 8Vc is
not in direct contact (6). Further, the effect which is superior by kneading is also the same as
above, and the frequency characteristic is arbitrarily set by selecting the one having different
inclination angles of the inclined surface 8. As described above, according to the present
invention, the thick and thin portions are provided on the diaphragm ring supporting the
diaphragm, and the peripheral edge of the diaphragm is identified on one surface of the
diaphragm ring. Selection of low frequency resonant frequency and other dark wave number
characteristics or variations of general factors that occur due to molding conditions etc., without
changing the molding die one by one, by simply using one with a different inner diameter of the
diaphragm ring be able to. And at the time of the shaping | molding, the shaping | molding
operation of a diaphragm apparatus can be performed smoothly and rapidly, without an adhesive
agent contaminating a metal mold | die. Brief description of the four sections shows an
embodiment of the present invention, and FIGS. 1 to 4 show the Tiaakulam V :: straight (7) splint,
according to the present invention, with a molding die. It is a schematic front sectional view
showing a relation. 1 ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии ?
(? 2 и r to "? 43 ?? 31 / '-/ ? -p-'), / 2L2 4th organ 7- 7 7 '22' 791 Q for new registration
application Meno = -a set-up ? attorney patent attorney Koike bird 6, rii /: ic: Inventors other
than address address dispute prefecture Tsurumi-ku, Yokohama Tsurumi Ward 1-9-15 name
village 1) Nobuyuki E
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