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Specification 1, 2% of the scope of the invention H-microphone consisting of a substantially
columnar anti-vibration member fixed by the mounting body of the H microphone, and this antivibration member V * a supporting member of a double-layered microphone A microphone
characterized in that the hm protection and member is surrounded by a frame excluding a flat
portion of the anti-vibration portion in the anti-vibration mechanism of the present invention,
and the frame is fixed to the attached body. Vibration isolation am.
Microphone vibration isolation mechanism
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microphone
tiifIk 襖 suitable for use in, for example, a tape recorder, a cine camera having a simultaneous
recording mechanism, and the like. Recently, cine cameras equipped with a so-called J time
recording mechanism that can perform recording and recording tv of hoarse voice at the time of
shooting and rWJ are in widespread use. Such a cine camera is constructed such that a
microphone is attached to the tip of a substantially rod antenna-like support member extending
and protruding from the turtle 2X body, and audio recording is performed by the microphone in
synchronization with the operation of the cine camera. It can be done. By the way, if the
microphone is simply attached to the tip of the support member protruding from the camera
main body as described above, mechanical vibration due to the same rotation of the motor
contained in the cine camera main body at the time of cine camera operation via the support
member. It is transmitted to the microphone, and there is an incompatibility that worsens the
87N ratio. In addition, the axis does not disturb the cine camera, and the same applies to, for
example, a tape recorder and the like, and the mechanical vibration of the motor causes the
illusion of the internal acoustic system. For this reason, in order to prevent the mechanical
vibration generated from the cis-cine camera or the tape recorder from being transmitted to the
microphone, the anti-fogging measure is applied to the microphone. Fig. 1 shows the vibration
damping means v of a microphone in a conventional Q] cinecam. That is, reference numeral 11
denotes a microphone body, which is attached to a substantially rod antenna-like supportable
EndPage: 1 member 12. The outermost peripheral portion of the support portion side 12 is fitted
in a substantially cylindrical weight 13. The way JJ passes the vibration isolation member 14.14
through the page, and the vibration isolation member 14.14 is supported by the inner peripheral
portion of the substantially bottomed cylindrical microphone cabinet 15. Here, the abovementioned microphone loom 11 is installed outward from the opening 151 of the microphone
cabinet 15 and is movable in the direction of the arrow in FIG. Further, at an end portion of the
support member 12 opposed to the bottom portion 152 of the microphone cabinet 15, a locking
piece 16 is provided so as to be orthogonal to the axial center direction of the support member
12. This locking piece 1 # is an elastic body 11. as shown in FIG. It is locked to the inner
periphery of the microphone cabinet 15 via III, so that when the microphone body 11 is moved
in the direction of the arrow in the figure, the outermost periphery and part of the support rod
12 will not move. It is to do. tた。 In the lower part of the figure of the microphone cabinet 15,
an increase portion 20 for the camera body 19 indicated by a two-point chain in one figure is
formed, and the microphone cabinet 15 is detachably attached to the camera body 1g. There is.
Here, if the conventional microphone vibration isolation means as described above is simply
shown in principle, it can be KTo as shown in FIG. 2 (1). That is, the support member 12
penetrates the substantially central portion of the substantially columnar vibration isolation
member 14, and the lower portion in the figure of the vibration isolation member 14 is identical
to the camera body 19 as a microphone attachment body. When the camera body 1 # vibrates,
the smaller the support member 12Q is, the better. Here, the relationship between the vibration
frequency (f) of the camera body 19 and the noise level (L) of the microphone body 11 due to the
vibration of the camera body 19 being transmitted to the support member IJ is the 21st! as
shown in fllb). In this case, the noise level (L) is maximized by the distribution circle IFa (f *) tl'i *
including tH16 material 1x1 including ft * t (W) and the compliance (0) of the vibration-proof
member 14 It is decided. すなわち。 f · k · 1 · · · W However, k: can be determined by the shape,
material 擲? Here, when viewed from the side of the material, the present-generated vibration
isolation member 14 has an inverse proportional relationship between the internal loss and the
compliance, and the noise level (L) is extremely reduced by the improvement of the material. It is
very difficult to do. Therefore, it is thought that it is most desirable to put the vibration frequency
(fo) out of the hearing band. On the other hand, since the cine camera is, of course, converted on
the premise of carrying it, mechanical Ii! Can be sufficiently resistant to vibrations and the like
when carrying it. j11 degree needs to be raised. For this reason, it is necessary to make the
vibration-proof member 14 accustomed by the reinforcing agent case 21 which is a surface
which can not follow the X of the support member 12 as shown in the third W (ml. The shape of
the anti-vibration member 14 may be a ridge as shown in FIG. 3b. For example, the anti-vibration
member 14 may be appropriately formed in accordance with the shape of the microphone
cabinet 15, etc. The shape of the reinforcing agent case 21 is also changed according to the
shape of. However, in the conventional microphone anti-vibration means as described above,
since the anti-vibration member 14 is covered with the reinforcing agent case 21, the compliance
of the anti-vibration member 14 is degraded, and the number of tremors per hour The problem is
that it is not a foolish factor that causes the child to go out of the audio frequency range to 1),
and it is impossible to keep the noise level low as a whole. Further, in the case where the support
member 12 is penetrated to the anti-vibration member J4 and adhered with an adhesive, the
interval III becomes more serious.
The present invention has been made under the above circumstances and provides a very good
microphone vibration isolation mechanism capable of obtaining a sufficient vibration isolation
effect with a simple configuration and enhancing one physical strength ff14. The purpose is to
The following is a summary of this invention J? I will be described in detail in light of the
retrospective on EndPage: 2 about Il. In FIG. 4 and FIG. 5, the same symbols are shown in FIG. 1
to FIG. 3 and four parts, and only different parts will be described here. That is, the vibration
absorbing member 14 formed in a substantially square pole shape is surrounded by the frame 22
excluding the flat portions thereof, and the frame 22 is substantially co-located with the camera
main body 19. This is a point different from the conventional one. According to such a
configuration, the frame body 22 covers the 12 corners of the anti-vibration members 140 52
thousand 1 [1 m, and the eight corners of the three flat portions. The vibration member J4v can
be strong. In addition, since the six flat portions of the vibration isolation member 14 (1) are
completely released, the compliance does not deteriorate. Therefore, the silver amount level of
the microphone main body 11 by the engraving of the vibration 1 generated from the turtle 2
main body 19 can be kept low as a whole, and the vibration proof S material 14 can be
sufficiently removed. is there. Further, since only the support member 12 needs to be penetrated
through the vibration isolation member 14, the configuration is extremely simple and the
assembly becomes easy. In this regard, among the conventional anti-vibration means, there are 4
in which the sound collecting portion is suspended by an elastic material in the microphone
body, but it is a very small portion. It is a thing. However, according to the configuration as in the
above embodiment. Since the anti-vibration means is applied to the support member 12, one
assembling operation can be facilitated. Here, FIG. 6 is a comparison of noise pel by the
conventional vibration isolation means, and curve (1) in FIG. 6 shows the noise level by the
conventional vibration isolation means, and curve (1) is the one of the above embodiment. It
shows the noise level by the vibration isolation means. Here, FIG. 7 (at and lbl respectively show
modified examples of the above embodiment, and shows a case where the cedar shape of the
vibration-proof member 14 is true. Even in such a case, as the frame 22 as shown in the figure,
the anti-vibration member 14 may be used with the exception of one flat part, and an effect V as
in the above embodiment and r5] can be obtained. It is. The present invention is not limited to
the above-described embodiment, and can be practiced with various modifications without
departing from the scope of the invention.
As described above, according to the present invention, as described above, it is possible to
obtain a sufficient vibration damping effect V with a simple configuration, and also to improve
one mechanical strength. Can be provided.
4. Brief description of the drawings. FIG. 1 is a side sectional view showing a conventional
microphone fender * W, 2 m 1 m 1 and 1 b 1 are a perspective view showing in principle the
anti-vibration ie barrel of the conventional microphone and its characteristic curve Fig. 3, Fig. 3
(al, tbl are each a perspective view showing in principle the other conventional microphone's
defense structure, and Figs. 4 and 5 are each a microphone protection system according to the
present invention The perspective view and side which show one Example! FIG. 7T is a top view,
FIG. 6 is a characteristic curve of the same actual slack example, and FIG. 7 FIG. 1ml is a
perspective view showing a modification of the first embodiment. 11-· · Microphone X 'CK, 12 · · ·
Support member, 13 · · · Weight 14 · · · vibration isolation member, 15 · · · microphone cabinet,
16 · · · locking piece, 17 ° 18 · · · · Elastic body% 19 · · · body of the camera, 20 · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · frame. Applicants attorney Patent attorney Suzue Takehiko EndPage: 3 Fang 3
figure (a) (b) Fang 4 figure 5 figure 9 Fang 7 figure (a) (b) EndPage: 4
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description, jps57171898
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