close

Вход

Забыли?

вход по аккаунту

?

JP2014166241

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP2014166241
Abstract: In a vibration-electricity conversion device of an electric vibration amplification device,
amplification of a target vibration is efficiently performed by removing unintended vibration to
suppress generation of noise and howling. In a vibration-electric conversion device including a
vibration collection unit having a vibration-electric conversion element and a vibration-damping
container that prevents vibration from reaching a target by covering the vibration collection unit,
the vibration-damping container is a vibration-absorbing unit. The vibration collecting portion is
held through the material, and the vibration collecting portion is provided so as to be located on
the same plane as the surface formed by the opening end of the vibration damping container or
to protrude. [Selected figure] Figure 1
Vibration electrical converter and electrical vibration amplifier using the same
[0001]
The present invention relates to a device for converting mechanical vibration into an electrical
signal and a device for amplifying the electric signal obtained thereby and converting it again
into acoustic vibration or the like, particularly an electric stethoscope.
[0002]
A stethoscope used at a medical site brings a chestpiece having a diaphragm surface or a bell
surface into contact with an auscultation target, converts the vibration (target vibration) of the
object to be heard into air vibration, and the air vibration is auscultated through a tube (Sound
stethoscope) has been used for a long time by transmitting to the ear of the patient and hearing it
by the auscultation person.
04-05-2019
1
[0003]
In such a conventional acoustic stethoscope, the target vibration can be mechanically amplified
by increasing the area of the surface in contact with the diaphragm or the bell, but there is a limit
in enlarging the chestpiece.
Therefore, in order to obtain the target vibration with sufficient amplitude, it is necessary to
devise a method of contacting the chestpiece with the auscultation target, and in order to surely
hear the target vibration, technical learning was required. .
Besides that, the acoustic stethoscope also had to be used in a quiet environment to avoid
outpatient noise (purpose vibration amplification problem).
[0004]
In addition, when a stethoscope uses an acoustic stethoscope, it is necessary to insert an earpiece
of the acoustic stethoscope into the outer ear of the auscultator. If an auscultation person is an
internist or a doctor of emergency medical care, it is required to use the acoustic stethoscope
frequently, but in addition the time and effort of inserting the earpiece into the outer ear
becomes complicated and burdens the outer ear at the time of insertion There is also a risk that
the auscultation person may feel pain or suffer from abrasion to injure the patient (earpiece
insertion problem).
[0005]
Furthermore, in the conventional acoustic stethoscope, when listening to the target vibration by a
plurality of people simultaneously, tubes and earpieces for the number of people are connected
to the chest piece, but the target vibration is attenuated accordingly when the tube is lengthened
Do. In addition, the length of the tube limits the behavior of the auscultation person. For these
reasons, it is difficult for a general medical site to have a plurality of people listen to the same
target vibration at the same time using a conventional acoustic stethoscope (multi-person
simultaneous auscultation problem).
04-05-2019
2
[0006]
In order to solve the weaknesses of these acoustic stethoscopes, the technology of the electric
stethoscope that has been able to convert the target vibration of the auscultation target into an
electric signal and amplify it and listen to it with a speaker or earphone has been widely known.
There is.
[0007]
JP-A-2001-149369 JP-A-09-000518
[0008]
In the conventional acoustic stethoscope in which an electrical amplification device is provided in
the middle of the conventional acoustic stethoscope as in Patent Document 1, the auscultation
person can listen to the target vibration with a sufficient volume, and the target vibration
amplification problem is eliminated. Although it can, it can not solve the earpiece insertion
problem and the multi-person simultaneous auscultation problem.
In the case of a form such as Patent Document 2 in which the target vibration is converted into
an electric signal and then amplified and output by an electric vibration converter (for example, a
speaker etc.), the earpiece outer ear insertion problem can be solved, but such a structure Then,
noise and howling are likely to occur, so the volume can not be raised sufficiently.
As a result, the objective vibration amplification problem and the multi-person simultaneous
auscultation problem can not be solved.
[0009]
Therefore, the present invention was made to solve the above-mentioned problems.
[0010]
The vibration-electric conversion device according to the present invention includes: a vibrationcollecting unit that has a vibration-electric conversion element that converts vibration into an
electric signal, collects vibration in an object, converts it into an electric signal, and outputs the
vibration; The vibration damping container comprises: a vibration damping container provided to
04-05-2019
3
cover the vibration collecting portion to dampen the non-collection vibration reaching the
vibration collecting portion to be smaller than the vibration for collecting purpose. The vibration
collecting portion is provided to hold the vibration collecting portion via the vibration absorbing
material, and the vibration collecting portion is positioned on the same plane as the surface
formed by the opening end of the vibration damping container or protrudes from this surface. It
is characterized by the fact that
[0011]
By providing the vibration damping container, it is possible to damp the unintended vibration
reaching the vibration collecting portion, and the vibration of the vibratory electrical conversion
element reliably converts the intended vibration into an electric signal.
In addition, by holding the vibration collecting unit via the vibration absorbing material, it is
possible to absorb the vibration from the vibration damping container to the vibration collecting
unit, so that it is possible to further attenuate the unintended vibration reaching the vibration
collecting unit. it can.
Also, in order to properly collect the target vibration while sufficiently drawing out the
performance of the vibration damping container, it is important that the vibration collecting part
and the open end of the vibration damping container be in close contact with the target object
simultaneously. By making the vibration collecting part on the same plane as the surface formed
by the opening end of the vibration damping container, it is preferable for the object when the
object is limited to one having neither flat nor concave surface. It can be in contact. Alternatively,
by causing the vibration collection portion to protrude appropriately from the surface formed by
the open end of the vibration damping container, various objects such as a flat surface, a convex
surface, a concave surface, and a soft surface can be suitably contacted. In general, the vibration
absorbing material has a flexible property, so that the vibration absorbing material can be
elastically deformed in accordance with the shape of the object surface even when the vibration
damping container and the vibration collecting portion have steps or different inclinations. This
enables each of the vibration damping container and the vibration collecting portion to be in
close contact with the object simultaneously.
[0012]
04-05-2019
4
In addition, the vibration-electric conversion device of the present invention is characterized in
that “the vibration damping container has a multilayer structure”. By using a multilayer
structure, it is possible to further damp the unintended vibration passing through the vibration
damping container, and if the same damping factor is set, it is better to use a multilayer structure
rather than a single layer structure. It becomes possible to make it small.
[0013]
The vibration-electric conversion device of the present invention is characterized in that “the
vibration absorbing material is provided between the layers of the vibration damping container
having a multilayer structure”. This structure can further attenuate extraneous vibrations
passing through the vibration damping container.
[0014]
In addition, in the vibration-electric conversion device of the present invention, “A part or all of
the vibration absorbing material provided between the layers is provided near the opening end of
the vibration damping container, and the vibration absorbing material is the vibration damping
container It protrudes from the open end of the By this feature, the vibration absorbing material
protruding when pressing the vibration-electric conversion device against the object is deformed,
and the gap between the open end of the vibration damping container and the object is closed
more efficiently, and the intrusion from this gap is made. Vibration can be reduced. Moreover, it
becomes possible to attenuate the extraneous vibration which is transmitted as the surface wave
on the surface of the object by the projected vibration absorbing material.
[0015]
The vibration-electric conversion device of the present invention is characterized in that “the
vibration damping container is hemispherical”. With this structure, the surface area of the
vibration damping container is minimized, and the area exposed to the atmosphere is minimized,
so that it is possible to reduce the non-target vibrations caused by the atmosphere. In addition,
since the mechanical strength becomes uniform, it is possible to damp the non-target vibration
without directivity, and it is possible to exhibit stable performance.
04-05-2019
5
[0016]
In addition, the electric vibration amplification device of the present invention is characterized by
“having the above-described vibration electric conversion device, an electric amplifier, and an
electric vibration conversion device for converting an electric signal into vibration”. With this
configuration, it is possible to efficiently amplify the target vibration inside the object while
suppressing the occurrence of noise and howling, and to provide an electric vibration
amplification device capable of directly listening from an electric vibration conversion device
such as a speaker as sound. It becomes possible.
[0017]
According to the present invention, it is possible to suppress occurrence of noise and howling, to
reliably amplify a target vibration and to listen to it.
[0018]
Hereinafter, the present invention will be described with reference to the drawings.
[0019]
It is a sectional view showing the electric type vibration amplification device of the present
invention.
It is a perspective view of a vibration electrical conversion device of the present invention.
It is the figure seen from the auscultation object contact side of the vibration electrical
conversion apparatus of this invention. It is a figure which shows the concept of the vibration
electric transducer of this invention. It is a figure which shows the vibration damping container
opening end vicinity of the vibration electrical conversion apparatus of this invention.
[0020]
First, the electric vibration amplification device of the present invention will be described based
04-05-2019
6
on FIG. FIG. 1 is shown as a cross-sectional view. Roughly, it is comprised by the vibration
electrical conversion apparatus, the electrical vibration conversion apparatus 19 which
incorporated the amplifier, and the cable 18c which connects them. Although a speaker is used
as the electric vibration converter 19 in the embodiment, another converter such as an earphone
may be used according to the purpose of the user. Also, in consideration of the convenience of
the user, connection may be performed using wireless technology and the physical cable may be
eliminated.
[0021]
At the time of auscultation, the vibration collecting part of the present invention and the
vibration damping container opening end 15 are brought into contact while being pressed
against an object of interest. The vibration collecting unit in the claim is the vibration collecting
unit 11 of FIG. 1, and the vibration collecting unit (casing) 11a, the vibration collecting unit
(inner surface) 11b, the diaphragm 11c, the rim 11d, the vibration electrical conversion element
11e, the vibration absorbing material 11f It is a whole that includes The target vibration
generated in the object reaches the vibration collecting portion (inner surface) 11b through the
diaphragm 11c, and vibrates the air present in the vibration collecting portion (inner surface)
11b. The vibration collecting portion (inner surface) 11b is shaped like a trumpet, and guides this
air vibration, which is the target vibration, to the vibration-electric conversion element 11e
disposed in the central portion thereof. For example, a microphone, a pressure sensor, or the like
corresponds to the vibration-electric conversion element 11 e, but the invention is not limited to
this. As another example, an acceleration sensor, a piezoelectric element, or the like can be
adopted as the vibration-electric conversion element. In this case, since the air vibration does not
intervene, the vibration collecting portion may be configured differently from that in FIG.
[0022]
The vibration-electric conversion element 11 e converts the target vibration guided by the
vibration collecting unit (inner surface) 11 b into an electric signal. This electrical signal is output
to the electrical vibration converter 19 by the cable 18c. By incorporating an amplifier in the
electric vibration converter 19, it is possible to amplify this electric signal to an arbitrary
amplitude. This allows a stethoscope to listen at an appropriate volume.
[0023]
04-05-2019
7
The vibration-electric conversion element 11e is fixed to the vibration collecting portion (casing)
11a via the vibration absorbing material 11f. As a result, there is an effect of attenuating the
vibration other than the target vibration from the diaphragm 11c (non-target vibration), and it is
possible to prevent the non-target vibration from reaching the vibration-electric conversion
element 11e.
[0024]
Also, the vibration collecting portion (housing) 11 a is fixed to the vibration damping container
15 a via the vibration absorbing material 17. As a result, there is an effect of damping the nontarget vibration from the vibration damping container 15a, and it is possible to prevent the nontarget vibration from reaching the vibration collecting portion (casing) 11a.
[0025]
The vibration collecting portion (housing) 11a may be made of metal or the like with high
density. Stainless steel is suitable from the viewpoint of economy and rust prevention, but is not
limited thereto. The vibration absorbing material 11 f and the vibration absorbing material 17
correspond to, for example, a sponge-like cushion, but are not limited thereto. The vibration
absorbing material 11 f and the vibration absorbing material 17 may be made of different
materials.
[0026]
In the present embodiment, triple vibration damping containers 15a to 15c are provided to cover
the vibration collecting unit (casing) 11a. Although a single vibration damping container is
effective, it is more effective if multiple low density materials such as air are present between
each layer. However, although triple is adopted in this embodiment in consideration of
processability, cost and performance, it is not limited to this. In the drawing, 15a, 15b and 15c
are shown from the inside. The vibration damping containers 15a to 15c are preferably metals
such as stainless steel from the viewpoint of economy and rust prevention, but are not limited
thereto. The vibration damping containers 15a to 15c may be made of different materials.
04-05-2019
8
[0027]
In FIG. 1, the surfaces formed by the diaphragm 11c and the vibration damping container
opening end 15 are not coplanar, and the diaphragm 11c is provided so as to project from the
surface formed by the vibration damping container opening end 15. This is because it is
necessary that the diaphragm 11 c and the opening end of the vibration damping container be in
close contact with the object at the same time in order to properly collect the target vibration
while sufficiently extracting the performance of the vibration damping container. When the
vibration damping container and the vibration collecting portion have steps or different
inclinations when the vibration-electric conversion device is pressed against various objects such
as flat surface, convex curved surface, concave surface, soft surface etc., the vibration absorbing
material 17 is elastically deformed Thus, the object can be brought into close contact with the
diaphragm 11c and the vibration damping container opening end 15 simultaneously. When the
object is limited to a flat object and an object having no concave surface, the diaphragm 11 c
may be provided on the same plane as the surface formed by the vibration damping container
opening end 15. Since the deformation of the vibration absorbing material can be set small
compared to the case where the diaphragm 11 c protrudes from the vibration damping container
opening end 15, the vibration electric transducer can be thinned.
[0028]
A vibration absorbing material 16a is provided between the vibration damping containers 15a
and 15b, and a vibration absorbing material 16b is provided between the vibration damping
containers 15b and 15c. The presence of a low density material such as air between the vibration
damping containers 15a to 15c in direct contact increases the vibration damping effect, but since
it is mechanically necessary to be supported by some member, It is supported by vibration
absorbers. The vibration absorbing materials 16a and 16b may be, for example, sponge-like
cushions, but are not limited thereto. The vibration absorbing materials 16a and 16b may be
made of different materials.
[0029]
The outermost vibration damping container 15c is connected to the gripping portion 18a, and
the auscultation person holds the gripping portion 18a by hand to handle the vibration-electric
transducer. The switch 18 b controls the operation of the electric vibration converter 19 with a
built-in amplifier through the cable 18 c. By providing the switch 18 b integrally with the grip
04-05-2019
9
portion 18 a gripped by the auscultator, the usability for the auscultist is improved. This is
because noise and howling occur when the sound is output from the electric vibration converter
19 in a state where the vibration damping container opening end 15 is not in close contact with
the auscultation target. Is preferable if it can be controlled arbitrarily.
[0030]
Next, the appearance of the vibration-electric conversion device of the present invention will be
described based on FIG. 2 and FIG.
[0031]
The vibration damping containers 15a to 15c are provided in a bowl shape so as to be
concentric.
The vibration damping vessel open end 15 corresponds to the edge of a concentric circle. Thus,
the vibration damping containers 15a to 15c cover the vibration collecting unit 11 as a whole
that collects the target vibration. In the configuration of the present invention, the diaphragm
11c is provided in the vibration collecting portion (inner surface) 11b, and one of the purposes is
to protect the vibration-electric conversion element 11e. If the diaphragm 11c is unnecessary
depending on the auscultation target, the diaphragm 11c may be omitted.
[0032]
Further, the main points of the present invention will be described based on FIG.
[0033]
The object of the present invention is to introduce the vibration (target vibration) emitted from
the vibration source 44 in the object 45 to the vibration collecting unit 47.
However, airborne noise 41 with air as the medium, object surface wave noise 42 with medium
as the object surface 46, and reproduction sound 43 by the electric vibration conversion device
reach the vibration collecting unit 47 and mix in the target vibration. There was a problem. In
particular, when the reproduced sound 43 by the electric vibration conversion device reaches the
04-05-2019
10
vibration collecting unit 47, howling occurs. In order to solve this problem, a vibration damping
container 48 is provided. The vibration damping container 48 is an assembly including the
above-described vibration damping containers 15a to 15c and the vibration absorbing materials
16a and 16b.
[0034]
The object 45 is, for example, a human body, and in this case, the object surface 46 is skin.
Because human tissue is elastic, noise which is an unintended vibration propagates as a surface
wave on the object surface. In the present invention, this surface wave is prevented from
reaching the vibration collecting portion 47 by pressing the object surface 46 at the open end of
the vibration damping container 48.
[0035]
In addition, the vibration damping container 48 isolates the vibration collecting unit 47 from the
outside atmosphere. As described above, since the vibration damping container 48 is a high
density material such as metal, it prevents the air propagation noise 41 and the reproduced
sound 43 from the electric vibration conversion device from being reflected and reaching the
vibration collecting portion 47. Furthermore, since the vibration damping container 48 has a
multiple structure, it has an effect of damping so that the noise 41 and the reproduced sound 43
that can not be reflected can not reach the vibration collecting unit 47.
[0036]
The vibration damping container 48 is shown in a bowl-like shape in FIG. 4 but is not limited
thereto. For example, it may be a hemispherical shape. By doing this, the area of the vibration
damping container 48 exposed to the outside air is minimized, so that it is possible to reduce the
unintended vibration originating from the air, and the mechanical strength becomes uniform. For
this reason, it becomes possible to damp the non-target vibration which makes air | atmosphere a
medium without directivity, and it becomes possible to exhibit the stable performance.
[0037]
04-05-2019
11
A further feature of the invention will now be described on the basis of FIG. FIG. 5 is an enlarged
sectional view of the opening end of the vibration damping container. In this figure, the vibration
absorbing materials 16a and 16b respectively project from the end faces of the vibration
damping containers 15a to 15c. With this configuration, when the vibration-electric conversion
device is pressed against the object, the vibration absorbing materials 16a and 16b are deformed,
so it is possible to more efficiently shut off the outside air. The degree of protrusion of the
vibration absorbing materials 16a and 16b need not be the same, and may be different from each
other, or either may not be protruding. Similarly, the end surfaces of the vibration damping
containers 15a to 15c do not have to be the same plane, and when the inner diaphragm 13
protrudes from the surface formed by the opening end of the vibration damping container, the
vibration damping container 15a is The end faces 15c to 15c may also be configured to decrease
the degree of protrusion from the inside toward the outside.
[0038]
Although the present invention has been described by way of preferred embodiments, the
present invention is not limited to these embodiments, and many modifications can be made
without departing from the spirit of the invention. Of course.
[0039]
The mass-produced vibration-electric conversion device and the electric vibration amplification
device using the same can suppress generation of noise and howling, and can perform an
auscultation operation efficiently.
[0040]
DESCRIPTION OF SYMBOLS 10 Electric-type vibration-amplification apparatus (cross-sectional
view) 11 Vibration collection part 11a Vibration collection part (housing) 11b Vibration
collection part (inner surface) 11c Diaphragm 11d Rim 11e Vibration electric conversion element
11f Vibration absorbing material 15 Vibration damping container opening end 15a Vibration
damping container 15b Vibration damping container 15c Vibration damping container 16a
Vibration absorbing material 16b Vibration absorbing material 17 Vibration absorbing material
18a Gripping portion 18b Switch 18c Cable 19 Electric vibration converter 20 Vibration electric
converter (appearance perspective view) 30 Vibration electric converter (Front view) 40
Vibration-electric conversion device (conceptual drawing) 41 Atmospheric propagation noise 42
Object surface wave noise 43 Sound reproduced by electric vibration conversion device 44
Vibration source 45 Object 46 Object surface 47 Vibration collecting part 48 Vibration damping
container 50 Vibration damping Container open end enlargement
04-05-2019
12
04-05-2019
13
Документ
Категория
Без категории
Просмотров
0
Размер файла
23 Кб
Теги
jp2014166241
1/--страниц
Пожаловаться на содержимое документа