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JP2009052921

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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 JP2009052921
An object of the present invention is a parabola that hardly peels off an adhesive between the
parabola sound collector and a base for fixing the same against an impact force forcefully applied
to the parabola sound collector and a vibration constantly transmitted from an object to be
diagnosed. Type acoustic diagnostic apparatus. SOLUTION: A parabolic sound collector 50 having
a microphone shape inside and having a parabolic shape, and a pedestal 100 for mounting the
parabolic sound collector are provided, and the parabolic sound collector is fixed to the pedestal
by an adhesive 110. In the parabola type acoustic diagnostic apparatus 1, an opening is formed
in a part of the parabola bonding surface 101 of the pedestal, which is an adhesive introducing
hole into which a part of the adhesive is introduced, and the opening 121, 131, 141 , 151 to the
interior of the pedestal and have adhesive introducing holes 120, 130, 140, 150. [Selected
figure] Figure 2
Parabola-type acoustic diagnostic device
[0001]
The present invention relates to a parabolic acoustic diagnostic apparatus suitable for noncontact diagnosis of the presence or absence of abnormality of a rotating machine such as a
motor or a pump.
[0002]
For example, a vibration method and an acoustic method are known as methods of diagnosing
the presence or absence of abnormality of a rotating machine such as a motor or a pump.
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The acoustic method is a method of measuring a sound emitted from a machine through a
measurement microphone and then performing signal processing to output a diagnosis result.
Many rotating machines can be dangerous if they are approached to perform inspection work,
and the acoustic method that can be operated non-contactingly compared with the vibration
method in which the vibration sensor is brought into direct contact with the machine is
measured. It can be said that it is useful as a next diagnosis.
[0003]
Therefore, when diagnosing the presence or absence of abnormality of a rotating machine such
as a motor or a pump without contact, the arrangement of the diagnostic device is made by
arranging a measuring microphone inside a sound collector having a parabolic shape to facilitate
sound collection. A parabolic acoustic diagnostic apparatus has been used in which the location
has freedom and the diagnostic performance is improved (see, for example, Patent Document 1).
JP, 2006-254376, A (5 page paragraph (0023), FIG. 3)
[0004]
The external shape of the parabolic sound collector is a three-dimensional curved surface, and a
part of the outer peripheral surface is adhesively bonded to the pedestal. The bonding surface by
the adhesive is ideally flat and bonded between them is ideal and the strength is also stable, but it
is not easy in terms of manufacturing method to make a flat portion on the outer peripheral
surface of the parabolic sound collector. Therefore, under the present circumstances, the base
surface of the shape according to the outer peripheral curved surface of the parabolic sound
collector is made, and both are bonded together. However, regarding such a fixing method, it is
not easy to uniformly form on the pedestal side a curved surface that closely matches the outer
peripheral surface of the parabolic sound collector. This is because, even if machining or one by
one is manufactured by hand in general, due to the construction method of the parabolic sound
collector made through FRP, the parabolic sound collectors have variations in the shape of the
outer peripheral surface. .
[0005]
As a feature of peeling of parabola and pedestal, the gel coat part of the parabolic sound collector
made of FRP is firmly adhered to the epoxy resin adhesive and this part does not peel off first,
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and the pedestal made of ABS resin and It tends to peel off at the adhesive interface.
[0006]
There is usually no problem in use even if using the parabolic acoustic diagnostic device
assembled by this bonding, but for example, a strong external force or impact force may be
mistaken at the time of inspection or maintenance of the parabolic acoustic diagnostic device
itself or its peripheral equipment. If it is added to the parabolic sound collector, there is a risk
that the bonded portion may come off.
[0007]
If the bonding surface between the parabolic sound collector and the pedestal by the adhesive is
partially peeled off, it will be extremely easily peeled off.
Although there is also a method of using screwing in combination when fixing the parabolic
sound collector to the pedestal, some of the screws may protrude to the inside (sound collecting
portion) of the parabolic sound collector, which is a preferable measure. Absent.
[0008]
On the other hand, there is a method of roughening the bonding surface of the pedestal with the
parabolic sound collector with sand paper or the like as a method of strengthening the adhesive
force of the adhesive between the parabolic sound collector and the pedestal.
If this method is carried out, the adhesion of the adhesive to the pedestal will surely be strong,
but the adhesion is not sufficient for the impact force forcefully applied to the parabolic sound
collector, and this adhesion is further strengthened. It is desirable to
[0009]
Such a problem of peeling of the adhesive between the parabolic sound collector and the
pedestal may occur even in a use environment where vibrations are constantly transmitted from
the diagnostic object of the parabolic acoustic diagnostic apparatus.
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[0010]
The object of the present invention is to peel off the adhesive between the parabolic sound
collector and the base for fixing it against impact force which is forcefully applied to the
parabolic sound collector and vibrations constantly transmitted from the object to be diagnosed.
It is an object of the present invention to provide a parabolic acoustic diagnostic device that is
less likely to occur.
[0011]
A parabolic sound diagnostic apparatus according to claim 1 of the present invention comprises:
a parabolic sound collector having a microphone inside and having a parabolic shape; and a
pedestal on which the parabolic sound collector is mounted; In a parabolic acoustic diagnostic
apparatus in which a sound device is fixed to a pedestal with an adhesive, an adhesive
introducing hole into which a part of the adhesive is introduced, which is an adhesive surface of
the pedestal with the outer surface of the parabolic sound collector. It is characterized in that an
opening is formed in a part, and an adhesive introducing hole extending from the opening toward
the inside of the pedestal is provided.
[0012]
An adhesive is interposed between the parabolic sound collector and the pedestal as in the prior
art by forming an adhesive introducing hole in a part of the pedestal of the pedestal in which
such an opening portion is provided. Not only that, the adhesive introduction hole is inserted into
the hole and filled.
As a result, the bonding surface between the adhesive and the base is not a mere curved surface
as in the prior art, but is a three-dimensional bonding surface, and the bonding area can be
increased.
This makes it difficult for the adhesive to separate from the pedestal even if an unexpected
impact is instantaneously applied as an external force to the parabolic sound collector or the
vibration of the object to be diagnosed is transmitted to the diagnostic device itself for a long
period of time The parabolic sound collector can be fixed firmly to the pedestal for a long time.
[0013]
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The parabolic acoustic diagnostic device according to claim 2 of the present invention is the
parabolic acoustic diagnostic device according to claim 1, wherein the parabolic acoustic
diagnostic device communicates with a part of the adhesive introduction hole, and the parabolic
sound collector adhesion of the pedestal is performed. It is characterized in that an adhesive leadout hole having an opening on a surface different from the surface is provided.
[0014]
In addition to the effect described in claim 1 of the present invention, since the adhesive flowing
from the adhesive introduction holes flows out from the opening of the adhesive lead holes to the
outside of the pedestal, it is easy to fill the adhesive into these holes. This makes it easy to fix the
parabolic sound collector to the pedestal.
[0015]
In addition to the adhesive introduction hole, the adhesive lead-out hole communicating with this
makes the bonding area between the parabolic sound collector and the base wider, so the
adhesion between the parabolic sound collector and the base is made more It can be strong.
[0016]
Also, the adhesive introduction hole and the adhesive lead-out hole are respectively formed on
different surfaces of the pedestal, so that the adhesive surface inside the pedestal of the adhesive
becomes more three-dimensionally complicated. Therefore, the above-mentioned adhesion can be
made stronger.
[0017]
A parabolic-type acoustic diagnostic device according to claim 3 of the present invention is the
parabolic-type acoustic diagnostic device according to claim 1 or 2, wherein the parabolic soundcollecting surface on the parabolic sound collector adhesion surface of the pedestal is An elastic
member for shock absorption is interposed between the outer peripheral surface of the parabolic
sound collector and the parabolic sound collector bonding surface of the pedestal at the end
portions on both sides in the width direction orthogonal to the axial direction of the container. It
is characterized by
[0018]
When an external force is applied such that a moment is generated around the axis of the
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parabolic sound collector at one end (the other side) in the width direction of the parabolic sound
collector bonding surface of the pedestal, and the adhesive of the parabolic sound collector is
peeled off from the pedestal, In the past, separation between the pedestal and the parabolic
sound collector in this portion was likely to occur, but by providing such an elastic body on the
pedestal, even if such external force acts as an impact force, the other of the pedestal ( The
elastic body at the end portion of the (1) end compresses to absorb the impact force, thereby
making it difficult to cause local peeling of the adhesive at the end portion of the (one) end of the
base with the base of the adhesive.
As a result, it is possible to effectively prevent the bonding surface of the parabolic sound
collector and the pedestal from peeling off.
[0019]
In addition, if the elastic body and the pedestal at one end of the pedestal (the other) and the
elastic body and the parabolic sound collector are bonded with an adhesive, the end of one (the
other) of the pedestal Since the elastic body in the case (2) absorbs this impact force, local
peeling of the adhesive on the one (other) end of the pedestal from the pedestal of the adhesive is
less likely to occur.
[0020]
According to the present invention, an adhesive force is generated between the parabolic sound
collector and the pedestal for fixing the same against an impact force forcefully applied to the
parabolic sound collector and vibrations constantly transmitted from the object to be diagnosed.
It is possible to provide a difficult parabolic sound diagnostic apparatus.
[0021]
Hereinafter, a parabolic acoustic diagnostic apparatus according to a first embodiment of the
present invention will be described based on the drawings.
FIG. 1 is a schematic perspective view of a parabolic acoustic diagnostic device 1 according to a
first embodiment of the present invention.
The parabolic acoustic diagnostic device 1 according to the first embodiment of the present
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invention is, as shown in FIG. 1, a parabolic parabolic sound collector 50 provided with a
microphone (not shown here) at an internal focal position. And a pedestal 100 provided at a
lower portion of a substantially central portion of the parabolic sound collector 50 in the
longitudinal direction, and between the parabolic sound collector 50 and the pedestal 100, an
adhesive 110 made of epoxy resin (see FIG. 3). The parabolic sound collector 50 is firmly fixed to
the pedestal 100 through the.
In addition, the parabolic sound collector 50 is to be manufactured by hand one by one using
resin agents such as FRP (Fiber Reinforced Plastics).
The pedestal 100 is made of a synthetic resin excellent in strength and moldability, such as an
ABS resin (acrylonitrile butadiene styrene resin).
In addition, an adhesive 110 made of epoxy resin, which is interposed between the parabolic
sound collector 50 and the pedestal 100 to bond the two, partially enters the pedestal to form a
complicated three-dimensional shape as described later. Hardened with
[0022]
In the following description of the present embodiment and the modification thereof, the opening
side of the parabolic sound collector 50 (see FIG. 1) with the bottom surface 102 of the pedestal
100 of the parabolic acoustic diagnostic device 1 forming a horizontal plane. The right side in 1)
is the front, the closed side of the rear end of the parabolic sound collector (left side in FIG. 1) is
the rear, and the left and right sides of the parabolic sound collector 50 in the axial direction are
the width direction of the pedestal 100.
[0023]
The pedestal 100 to which the parabolic sound collector 50 is fixed has a rectangular
parallelepiped lower portion as shown in FIG. 2 and is fitted on the upper surface of the
longitudinal central portion of the outer peripheral surface of the parabolic sound collector 50 at
the upper side. The parabolic bonding surface 101 is formed.
The parabola adhesion surface 101 is generally inclined toward the front so that the height of
the front portion 101a of the pedestal 100 is low and the height of the rear portion 101b is high,
03-05-2019
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and is curved in the width direction, and the longitudinal direction Are curved slightly to
correspond to the complex outer peripheral surface of the parabolic sound collector 50.
[0024]
A slight step 105 (shown only in FIG. 2) is formed on the periphery of the parabolic bonding
surface 101 to prevent the adhesive 110 from flowing out to the pedestal side wall.
[0025]
In the parabola bonding surface 101 of the pedestal 100, bottomed adhesive introducing holes
120 and 130 having rectangular openings 121 and 131 at predetermined intervals in the width
direction at the front portion 101a are located below the pedestal 100. Bottomed adhesive
introduction holes 140 and 150 having similar rectangular openings 141 and 151 which are
bored toward the rear and have a similar space at a predetermined interval in the width direction
also at the rear portion 101b thereof. It is drilled.
[0026]
In the case of the present embodiment, the adhesive introduction holes 120, 130, 140, and 150
are formed vertically toward the bottom surface 102 of the pedestal 100, but are necessarily
perpendicular to the bottom surface 102 of the pedestal 100 in this manner. It does not need to
be formed, and may be formed obliquely at different angles.
Further, the holes of the adhesive introducing holes 120, 130, 140, and 150 need not have a
rectangular shape in a plan view as in the present embodiment, and may have a round shape or
an elliptical shape.
[0027]
The operation by providing such adhesive introduction holes 120, 130, 140, 150 is as follows.
When the parabolic sound collector 50 is adhered to the parabolic adhesive surface 101 of the
pedestal 100, the adhesive 110 is applied to the parabolic adhesive surface 101 so that the
adhesive 110 is formed in the parabolic adhesive surface 101. , 141, 151 into the adhesive
03-05-2019
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introducing holes 120, 130, 140, 150, and eventually the adhesive introducing holes 120, 130,
140, 150 are completely filled with the adhesive 110.
That is, not only the adhesive 110 is interposed between the parabolic sound collector 50 and
the pedestal 100 as in the prior art, but as shown in FIG. 3, the adhesive 110 has the adhesive
introducing holes 120, 130, 140, It also enters into 150 and cures in a state where the adhesive
110a and the adhesive 110b are integrated.
As a result, the bonding surface between the adhesive 110 composed of the adhesive 110a and
the adhesive 110b and the pedestal 100 is not a simple curved surface (parabola bonding
surface 101) as in the prior art, but a three-dimensional bonding surface and a bonding area Can
be increased. As a result, the adhesive 110 peels off from the pedestal 100 even if an unexpected
impact force is momentarily applied as an external force to the parabolic sound collector 50 or
the vibration of the object to be diagnosed is transmitted to the diagnostic device itself for a long
period of time This makes it difficult to keep the parabolic sound collector 50 fixed to the
pedestal 100 for a long time.
[0028]
Then, the modification of the parabolic-type acoustic diagnostic apparatus which concerns on
embodiment mentioned above is demonstrated. In this modification and the other embodiments
described below, the components equivalent to those in the above-described embodiment are
denoted by the reference numerals corresponding to the drawings, and the detailed description
will be omitted. Moreover, about the structure of the parabolic sound collector based on this
modification, since it is the structure equivalent to embodiment mentioned above, detailed
description and illustration are abbreviate | omitted.
[0029]
In the parabolic acoustic diagnostic apparatus according to this modification, as shown in FIGS. 4
and 5, the bottoms 122 and 132 of the two adhesive introducing holes 120 and 130 on the front
side of the pedestal 100 ′ according to the above embodiment are pedestals. It communicates
with the bottom surface 102 of 100 'via a communication passage 160 formed in the horizontal
direction. The bottoms 142 and 152 of the two adhesive introduction holes 140 and 150 on the
rear side of the pedestal 100 'are also in communication with the bottom surface 102 of the
03-05-2019
9
pedestal 100' via a communication passage 170 formed in the horizontal direction. These
adhesive introduction holes 120, 130, 140, 150 are formed such that the communication paths
160, 170 have a square U-shape as viewed from the front of the pedestal as shown in FIG. 5 (a).
[0030]
The operation of the adhesive introduction holes 120, 130, 140, 150 and the communication
passages 160, 170 in this modification having such a configuration is as follows. When bonding
the parabolic sound collector 50 to the pedestal 100 ′, the adhesive 110 is applied to one
surface in the width direction of the parabolic bonding surface 101, and the opening 121 of the
adhesive introducing hole 120, 140 in the width direction. The adhesive 110 is poured from 141
and the poured adhesive 110 is made to flow out from the openings 131 and 151 of the other
adhesive introducing holes 130 and 150 in the width direction. As a result, the adhesive 110 can
be reliably filled without the occurrence of air bubbles or the like in the adhesive introduction
holes 120, 130, 140, 150 and the communication passages 160, 170 in this modification.
[0031]
Then, as shown in FIG. 5, the adhesive introducing holes 120, 130, 140, 150 are filled with the
adhesive 110b and the parabola adhesion surface 101 of the pedestal 100 'is covered with the
adhesive 110a. The agent 110 is integrated after curing, and the adhesive 110 is firmly adhered
to the pedestal 100 ′, and the parabolic sound collector 50 is firmly fixed to the pedestal 100 ′
via the adhesive 110.
[0032]
As a result, even if an unexpected impact force is momentarily applied as an external force to the
parabolic sound collector 50 or the vibration of the object to be diagnosed is transmitted to the
diagnostic apparatus itself for a long period of time, the adhesive 110 is released from the
pedestal 100 '. It becomes difficult to peel off, and the parabolic sound collector 50 can be kept
firmly fixed to the pedestal 100 'for a long time.
[0033]
Subsequently, a parabolic acoustic diagnostic apparatus according to a second embodiment of
the present invention will be described.
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The structure of the parabolic sound collector according to the second embodiment is the same
as that of the above-described embodiment, and thus the detailed description and illustration
thereof will be omitted.
[0034]
The pedestal 200 used in the parabolic acoustic diagnostic apparatus according to the second
embodiment of the present invention has a configuration as shown in FIG.
The pedestal 200 communicates the vicinity of the bottom of the two adhesive introduction holes
220 and 230 in which the openings 221 and 231 are formed in the front portion 201 a of the
parabola bonding surface 201 of the pedestal 200, and from the bottoms 222 and 232 The
adhesive lead-out hole 260 is extended in parallel to the bottom surface 202 toward both side
surfaces 203 and 204 of the pedestal 200 and has openings 261 and 262 in the both side
surfaces 203 and 204, respectively. Further, the pedestal 200 communicates the vicinity of the
bottom portions of the two adhesive introduction holes 240 and 250 in which the openings 241
and 251 are formed in the rear portion 201b of the parabolic bonding surface 201 of the
pedestal 200, and The adhesive lead-out hole 270 is extended from 252 to the side surfaces 203
and 204 of the pedestal 200 in parallel with the bottom surface 202 and has openings 271 and
272 on the both side surfaces 203 and 204, respectively. FIG. 8 is a perspective view showing
the adhesive introduction holes 240 and 250 and the adhesive lead hole 270 formed on the rear
side of the pedestal 200 in an easily understandable manner.
[0035]
By providing such an adhesive lead-out hole 270, as shown in FIGS. 7A and 7B, the adhesive
210b flowing from the adhesive lead-in holes 220 and 230 (240 and 250) is an adhesive. From
the openings 261, 262 (271, 272) of the adhesive lead-out hole 260 (270) formed at
substantially the same height as the bottoms 222, 232 (242, 252) of the introduction holes 220,
230 (240, 250) Since it flows out, the adhesive 210 can be easily filled in these holes without
generating air bubbles in the adhesive introduction holes 220 and 230 (240, 250) and the
adhesive discharge holes 260 (270). As a result, the time required for filling the adhesive agent
210 in these holes can be shortened, and the assembling operation of the parabolic sound
collector 50 to the pedestal 200 can be facilitated.
03-05-2019
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[0036]
In addition to the adhesive introducing holes 220, 230, 240, 250, by having such adhesive
introducing holes 260, 270, the bonding area between the parabolic sound collector 50 and the
pedestal 200 becomes wider, so The adhesive force between the sound collector 50 and the
pedestal 200 by the adhesive 210 can be further strengthened.
[0037]
Further, the openings 221, 231, 241, 251 of the adhesive introduction holes 220, 230, 240, 250
and the openings 261, 262, 271, 272 of the adhesive lead holes 260, 270 are formed on
different surfaces of the pedestal 200. Because the bonding surface of the adhesive 210, in which
the adhesive 210a and the adhesive 210b are integrated, is partially complicated as shown in
FIG. The power can be made stronger.
[0038]
Subsequently, a parabolic acoustic diagnostic apparatus according to a third embodiment of the
present invention will be described.
The structure of the parabolic sound collector according to the third embodiment is the same as
that of the first embodiment described above, and thus the detailed description and illustration
thereof will be omitted.
The pedestal 300 used in the parabolic acoustic diagnostic apparatus according to the third
embodiment of the present invention has a configuration as shown in the perspective view of
FIG. 9 and the sectional view of FIG.
[0039]
In the pedestal 300, the step portions 305 and 306 are formed such that both widthwise end
portions of the parabolic bonding surface 301 are lowered along the longitudinal direction of the
pedestal 300 by a predetermined height. The outer peripheral surface of the parabolic sound
collector 50 and the parabola of the pedestal 300 are the end portions on both sides in the width
direction orthogonal to the axial direction of the parabolic sound collector 50 on the bonding
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surface 301 of the pedestal 300 via the step portions 305 and 306. Between the adhesive
surface 301 and the rubber material (elastic body) 380, 390 for shock absorption are interposed.
In the case of the present embodiment, although not shown in detail in the drawings, adhesion is
also made between the rubber materials 380 and 390 for impact absorption and the parabolic
sound collector, and between the rubber materials 380 and 390 and the pedestal 300. It is
adhered with an agent 310.
[0040]
By having such rubber materials 380 and 390, in addition to the action of remarkably improving
the adhesive force of the adhesive 310 to the pedestal 300 similarly to the above-described
second embodiment, the following action is particularly exhibited. Specifically, at one end in the
width direction (the end on the rubber material 380 side in the figure) of the bonding surface
301 of the pedestal 300 with the parabolic sound collector 50, the parabolic sound is collected
around the axis of the parabolic sound collector 50. When an impact force (external force) that
causes a moment to pull the container 50 away from the pedestal 300 is applied, the impact
force locally acts on the bonding surface between the pedestal 300 and the adhesive 310 on the
parabolic sound collector side in this portion. Thus, peeling tends to occur between them.
However, by providing the rubber material 390 at the other end of the pedestal 300 as in the
present embodiment, the rubber material 390 is compressed to absorb the impact force even if
the external force acts as an impact force. By doing this, local peeling of the adhesive 310 at one
end of the pedestal 300 is less likely to occur. As a result, it is possible to effectively prevent the
adhesive surface of the parabolic sound collector and the pedestal 300 from peeling due to the
action of the rubber material 390.
[0041]
Further, since the parabolic sound collector 50, the rubber material 380 at one end of the
pedestal 300, and the pedestal 300 are bonded with the adhesive 310, the rubber material is an
elastic body when such an impact force is applied. The impact force is absorbed also by the
elastic force of the rubber material 380 by being pulled in the direction in which the 380
extends, and local peeling of the adhesive 310 at one end of the pedestal 300 is less likely to
occur. As a result, it is possible to effectively prevent peeling of the bonding surface between the
parabolic sound collector 50 and the pedestal 300 even by the action of the rubber material 380.
03-05-2019
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[0042]
Similarly, even if an impact force (external force) that causes a moment to separate the parabolic
sound collector 50 from the pedestal 300 is applied at the other end in the width direction of the
pedestal 300 (the end on the rubber material 390 side in the figure). By compressing the rubber
material 380 at one end of the pedestal 300 and absorbing the impact force, local peeling of the
adhesive 310 at the other end of the pedestal 300 is less likely to occur. As a result, it is possible
to effectively prevent the adhesive surface of the parabolic sound collector and the pedestal 300
from peeling off due to the action of the rubber material 380.
[0043]
Also, since the parabolic sound collector 50, the rubber material 390 at the other end of the
pedestal 300, and the pedestal 300 are bonded with the adhesive 310, the rubber material is an
elastic body when such an impact force is applied. The elastic force of the rubber material 390
absorbs the impact force by being pulled in the direction in which the elastic member 390
extends, making it difficult to cause local peeling of the adhesive 310 at the other end of the
pedestal 300. As a result, it is possible to effectively prevent peeling of the bonding surface of the
parabolic sound collector 50 and the pedestal 300 even by the action of the rubber material 390.
[0044]
Although it is not necessary to adhere the adhesive 310 between the rubber members 380 and
390 for impact absorption and the parabolic sound collector 50 and between the rubber
members 380 and 390 and the pedestal 300 in the present embodiment, In order to use the
elastic force when the rubber material 380, 390 is pulled for absorbing the impact force, in
addition to the elastic force when the rubber material 380, 390, which is an elastic body for
absorbing impact force, is compressed. It can be said that bonding between the parabolic sound
collector 50, the rubber members 380 and 390, and the pedestal 300 with the adhesive 310 is
effective in preventing peeling of the adhesive 310 from the pedestal 300.
[0045]
Moreover, the material of the elastic body for impact absorption is not limited to rubber like the abovementioned rubber materials 380 and 390, and other elastic materials may be used.
03-05-2019
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[0046]
Hereinafter, since the evaluation test was performed about the usefulness with respect to the issue which should
be solved regarding the parabola type acoustic diagnostic apparatus mentioned above and this effect was
confirmed, this point is demonstrated.
[0047]
In conducting this evaluation test, using a general parabolic sound collector made of FRP, it was fixed to a
pedestal made of ABS via an adhesive made of epoxy resin by several fixing methods.
Then, install each of these parabolic acoustic diagnostic devices in which the parabolic sound collector is fixed to
the pedestal, and gradually increase the acceleration to generate the acceleration that causes peeling of the
adhesive between the parabolic sound collector and the pedestal. Examined.
[0048]
Under the present circumstances, as a comparative example (A), the thing which does not give a surface
treatment to a base and the adhesion surface of a parabolic sound collector was used.
Moreover, as a comparative example (B), what carried out the surface treatment by sandpaper on the adhesion
surface of a base and a parabolic sound collector was used, and what was given roughening was used.
Further, as the present example, one in which the parabolic sound collector is adhered to the pedestal as in the
second embodiment described above is used.
[0049]
And when the above-mentioned acceleration test (impact test) was done, exfoliation occurred in the adhesion
side by acceleration 2G, and exfoliation occurred in the adhesion side with acceleration 4G in comparative
example (B) in comparative example (A). However, in the case of the present example, peeling did not occur on
the adhesive surface up to the acceleration 6G. This proves the usefulness of the embodiment described above for
the problem to be solved by the present invention.
03-05-2019
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[0050]
FIG. 11 is a side view showing an actual installation state of the parabolic acoustic diagnostic apparatus shown in
each of the above-described embodiments of the present invention and the modification thereof. Hereinafter, a
state where the parabolic-type acoustic diagnostic device 1 according to the first embodiment is attached will be
described based on FIG. 11 as a representative. As can be seen from the figure, a mounting bracket 60 is fixed to
the bottom surface 102 of the pedestal 100 of the parabolic acoustic diagnostic device 1 via a fastener such as a
screw, and the mounting bracket 60 is mounted via U-shaped bolts 71 and 72. For example, it is fixed at a suitable
height to a post 80 installed near a rotary pump or the like.
[0051]
The mounting bracket 60 includes two overlapping metal mounting plates 61 and 62, and the metal mounting
plate 61 mounted on one of the columns via U-shaped bolts 71 and 72 has a projection. 61a is provided at a
suitable position, and the projection 61a is adapted to engage with a plurality of slightly curved elongated holes
62a formed in the mounting plate 62 fixed to the pedestal 100 at predetermined intervals in an arc shape. . Then,
with the projections 61a appropriately adjusted in engagement with the long holes 62a, the mounting plates 61,
62 are fixed by fasteners such as bolts, etc., thereby collecting the parabolic sound of the parabolic acoustic
diagnostic apparatus 1. The sound collection angle of the unit 50 can be appropriately adjusted.
[0052]
The attachment structure of the parabola type acoustic diagnostic apparatus 1 described above is also applicable
to the parabola type acoustic diagnostic apparatus according to the modification of the first embodiment and the
other embodiments as described above.
[0053]
As described above, in the parabola type acoustic diagnostic device 1 according to the first embodiment of the
present invention, since the pedestal 100 has the above-described characteristic configuration, the adhesive 110 is
a parabola as in the prior art. In addition to being interposed between the sound collector 50 and the pedestal
100, the adhesive introduction holes 120, 130, 140, and 150 enter the holes and are filled in the holes.
03-05-2019
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As a result, the bonding surface between the adhesive 110 and the pedestal 100 is not formed as a simple curved
surface as in the prior art, but is formed as a three-dimensional bonding surface, and the bonding area can be
increased. As a result, even if an unexpected impact is instantaneously applied as an external force to the
parabolic sound collector 50 or the vibration of the object to be diagnosed is transmitted to the diagnostic
apparatus itself for a long period of time, the adhesive 110 is removed from the pedestal 100 It becomes difficult
to peel off, and the parabolic sound collector 50 can be firmly fixed to the pedestal 100 for a long time.
[0054]
Further, the parabola type acoustic diagnostic device according to the second embodiment of the present
invention flows from the adhesive introduction hole 220, 230, 240, 250 because the pedestal 200 has the abovedescribed characteristic configuration. The adhesive flows out of the openings 261, 262, 271, 272 of the adhesive
outlet holes 260, 270 so that the adhesive 210 is more likely to be filled by the holes. As a result, the filling time of
the adhesive 210 for the adhesive introduction holes 220 230 240 and 250 and the adhesive lead holes 260 and 270
can be shortened, and air bubbles can be prevented from remaining in these holes.
[0055]
In addition to the adhesive introduction holes 220, 230, 240, 250, by having the adhesive lead holes 260, 270, the
bonding area between the parabolic sound collector 50 and the pedestal 200 becomes wider, so the parabolic
sound collector The adhesive force between the pedestal 50 and the pedestal 200 can be made stronger.
[0056]
Further, the openings 221, 231, 241, 251 of the adhesive introduction holes 220, 230, 240, 250 and the openings
261, 262, 271, 272 of the adhesive lead holes 260, 270 are formed on different surfaces of the pedestal 200,
respectively. By doing this, the adhesive surface of the adhesive 210 becomes a more three-dimensionally
complicated shape, so that the above-described adhesion can be made stronger.
[0057]
Further, the parabolic acoustic diagnostic apparatus according to the third embodiment of the present invention
has the above-described characteristic configuration of the pedestal, so the width direction of the parabolic
bonding surface 301 with the parabolic sound collector of the pedestal 300 At the end of one side (the other
side), even if an external force is generated as an impact force that causes the parabolic sound collector to peel off
the pedestal around the axis of the parabolic sound collector 50, the pedestal and parabolic sound collector 50 in
this portion Peeling and peeling are less likely to occur.
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That is, by providing such a rubber material (elastic body) 380, 390 between the pedestal 300 and the parabolic
sound collector 50, even if such an external force acts as an impact force, the other of the pedestal 300 ( By
compressing the elastic body (rubber material) at the end portion of (1) and absorbing this impact force, it
becomes difficult to cause local peeling of the adhesive 310 at the end portion of one (the other) of the pedestal
300.
As a result, it is possible to effectively prevent the adhesive surface of the parabolic sound collector 50 and the
pedestal 300 from peeling off.
[0058]
When the parabolic sound collector is made of FRP, the pedestal is made of ABS resin, and the adhesive is made
of epoxy resin as in the above-described embodiments and their variations, the outer periphery of the parabolic
sound collector. The surface and the adhesive are difficult to peel off through the gel coat, and peeling easily
occurs between the pedestal and the adhesive attached to the parabolic sound collector, but the abovementioned adhesive introduction hole and adhesive lead hole are formed in the pedestal By doing so, the
adhesive adheres firmly to the pedestal via the adhesive surface formed with a large adhesive area and formed in a
three-dimensional manner, so that the adhesive adhering to the parabolic sound collector becomes difficult to
peel off from the pedestal.
[0059]
In the embodiment and the modified example described above, the adhesive introduction holes are formed at
four places in the pedestal, but the invention is not necessarily limited to this. Parabola adhesion of one to three
or five or more of these pedestals A plurality of openings may be provided so that the openings in the surface are
formed in a matrix.
[0060]
Further, the adhesive lead-out hole is not limited to being formed only in the width direction of the base as in the
above embodiment, but may be formed in the longitudinal direction of the base, and is formed in both
directions. Also good.
[0061]
Further, the adhesive lead-out hole is not limited to being formed in parallel with the bottom surface of the
pedestal, and may be formed obliquely at a certain angle with respect to the bottom surface of the pedestal.
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[0062]
1 is a schematic perspective view of a parabolic acoustic diagnostic device according to a first embodiment of the
present invention.
It is the perspective view which showed only the base part of the parabola type acoustic diagnostic apparatus
shown in FIG. 1 from the front diagonally upper side.
A cross-sectional view along the adhesive introduction hole on the back of the pedestal shown in FIG. 2 (FIG. 3
(a)) and a cross-sectional view along the adhesive introduction hole on the other end side of the pedestal (FIG. 3
(b)) ).
It is a perspective view corresponding to FIG. 2 which shows the modification of the 1st Embodiment of this
invention shown to FIG. 1 thru | or FIG.
It is sectional drawing along the adhesive agent introduction hole of the modification shown in FIG. It is the
perspective view which showed only the base part of the parabolic-type acoustic-diagnosis apparatus based on
the 2nd Embodiment of this invention from the front diagonal upper side. It is sectional drawing along the
adhesive agent introduction hole of the base in the 2nd Embodiment of this invention shown in FIG. It is the
perspective view which showed the adhesive introduction | transduction hole of the base in the 2nd Embodiment
of this invention shown in FIG.6 and FIG.7 and the adhesive derivation | leading-out hole intelligibly with a
continuous line. It is the perspective view which showed only the base part used for the parabolic-type acoustic
diagnostic apparatus which concerns on the 3rd Embodiment of this invention from the front diagonal upper
side. FIG. 10 is a cross-sectional view of the pedestal according to the third embodiment of the present invention
shown in FIG. 9 along the adhesive introduction hole. It is the side view which showed the actual installation state
of the parabolic-type acoustic diagnostic apparatus shown to each embodiment of this invention, and the
modification corresponding to it.
Explanation of sign
[0063]
DESCRIPTION OF SYMBOLS 1 parabola type acoustic diagnostic device 50 parabola sound collector 60
installation bracket 61 installation plate 61a projection part 62 installation plate 62a long hole 71, 72 U-shaped
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bolt 80 pillar 100, 100 'pedestal 101 parabola adhesion surface 101a front part 101a rear part 102 Bottom surface
105 Stepped portion 110 (110a, 110b) Adhesive 120 Adhesive introduction hole 121 Opening 122 Bottom 130
Adhesive introduction hole 131 Opening 132 Bottom 140 Adhesive introduction hole 141 Opening 142 Bottom
portion 150 Adhesive introduction hole 151 Opening 152 bottom portion 160 communication passage 170
communication passage 200 pedestal 201 parabola adhesion surface 202 bottom surface 201 a front portion 201 b
rear portion 203, 204 side surface 210 (210 a, 210 b) adhesive 220 adhesive introduction hole 221 opening 222
bottom 230 adhesive introduction hole 231 opening 232 bottom 240 adhesive introduction hole 241 opening 242
bottom 250 adhesive introduction hole 251 opening 252 bottom 260 adhesive lead hole 261, 262 opening 270
adhesive lead hole 271, 272 opening 300 pedestal 301 parabola adhesive surface 305, 306 stepped portion 310
adhesive 380, 390 rubber material
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