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JP2014229953

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DESCRIPTION JP2014229953
Abstract: PROBLEM TO BE SOLVED: To construct a strain vibration generation system which is a
bone conduction vibration generation system and a bone conduction speaker system. A super
magnetostrictive substance is selected as the material of a part installed for finally transmitting
vibrations to a target, and the oscillator (2) and the movable part (3) are arranged so that the
vibration transmission path becomes a loop. A strain vibration generating system in which a
plurality of parts included are arranged and generate strain vibration. [Selected figure] Figure 1
Strain vibration generation system
[0001]
It is an invention of a bone conduction vibration generation system, a bone conduction speaker
system, and a strain vibration generation system which is an elastic wave generator.
[0002]
Recently, in the field of speakers that are vibration generating systems, electromagnetic actuators
or super magnetostrictive element actuators are used, and it is not the theory of applying sound
waves of compression waves to air using cone paper, which is a conventional technology, but
directly to materials There is also a bone conduction speaker for giving vibration, and there is
also an invention of giving vibration directly to the inside of an object to make various objects
such as a door and a table as a diaphragm of the speaker.
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However, although it seems to be a more stable system if it is configured to include a diaphragm,
there are still few such bone conduction speaker systems. Perhaps the ideal diaphragm structure
has not been found yet. Thus, it may be said that the bone conduction speaker system or the
bone conduction vibration generating system, etc., is still in the process of development including
the material of the vibration plate.
[0003]
Japanese Patent Application Publication No. 2007-19623 Japanese Patent Application
Publication 2012-49653 Japanese Patent Application Publication 2007-251643 Japanese Patent
Application No. 2012-210643 (Unpublished at the time of the present application by the same
applicant)
[0004]
For example, as the material of diaphragm 1 in Patent Document 1 is that it is possible to use
wood such as balsa wood, plastic, metal such as aluminum thin film, etc., it is devised to generate
transverse waves (electromagnetic waves) with voice. There is still room for improvement in the
material of the vibration plate as a bone conduction speaker.
Further, for example, in Patent Document 2, although the diaphragm 71 and the diaphragm 72
are combined with diaphragms of different materials to improve the performance, the material of
the ideal diaphragm is still You can see that it has not been found. It is an issue to analyze
various prior art including these and to clarify problems and to construct a new vibration
generation system.
[0005]
The following vibration generation system (FIG. 1B, FIG. 2D, FIG. 3 right) is adopted. A giant
magnetostrictive substance is selected as the material of the part installed to finally transmit the
vibration to the target, and a plurality of oscillators (2) and movable parts (3) are included so that
the vibration transmission path becomes a loop. The parts are arranged in a rigid connection and
generate strain vibration. This explains the fact that it consists of two major principles, and in
addition, the definition of what kind of vibration is "strain vibration" in the "strain vibration
generation system" of the present invention will be clarified below.
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[0006]
= Principle of the Invention 1 = A strain vibration generating system in which each part including
the oscillator (2) and the movable part (3) is arranged in a fixed connection so as to form a loop
of the vibration transmission path. This major principle has its first and second minor principles,
which are specified in order.
[0007]
Part 1 (see FIG. 1) As shown in FIG. 1A, when the oscillator (2) is not supported, the oscillator (2)
itself vibrates in vain due to the reaction of the generated vibration, and the vibration energy is
sufficiently vibrated. It does not reach the board (4). FIG. 1B improves this, and since the
oscillator (2) is fixedly connected to the main body (1), the oscillator (2) itself is wasted by the
reaction of the vibration of the movable part (3). There is no vibration, distortion movement
occurs according to the signal input to the oscillator (2) between the place where the movable
part (3) is connected and the place where the oscillator (2) is installed Occurs. That is, it becomes
the following of FIG. 1B. The movable part (3) of the oscillator (2) installed in the main body (1) is
connected to the diaphragm (4), and the oscillator (2) is subsequently installed in the diaphragm
(4). The same as the above (1), which is supported at different places of the body (1), where the
diaphragm (4) generates strain vibration, strain vibration is generated by arranging the vibration
transmission path firmly in the form of a loop. system. This is disclosed in Japanese Patent
Application Laid-Open No. 2007-19623. The vibration generating actuator is fixed to the
vibrating plate via a housing, and a vibration transmitting material as a movable part is directly
connected to the vibrating plate. As described above, each part including the oscillator (2) and
the movable portion (3) is arranged in a firmly fixed connection so that the vibration
transmission path becomes a loop.
[0008]
Part 2 (See FIG. 2) Principle of Reproduction of Giant Magnetostrictive Element The phenomenon
of a giant magnetostrictive element whose dimensions change when magnetism is applied is
started by reproducing with a conventional vibration generator. Therefore, focusing on the
characteristics of the giant magnetostrictive element again, it is that the element itself becomes
larger when magnetism is applied. It would probably not be possible to reproduce the exact same
thing with a conventional vibration generator, but similar things are not necessarily impossible if
04-05-2019
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we look a little more closely. Next, let's look at how to use the giant magnetostrictive element. As
shown in FIG. 2 (A), generally, the giant magnetostrictive element (7) is generally elongated, and
a coil (8) is placed around it to provide magnetism, thereby providing an input signal
Accordingly, the movable part (3) vibrates up and down. However, an actual giant
magnetostrictive element expands and contracts in both directions as in (B) and also in all
directions in an oblique direction, and in this way it expands and contracts in the longitudinal
direction as in (C). You will only be using This is probably the most rational way, but it also
ignores the energy that is stretching in the lateral or other direction. As described above, the
actual usage of the giant magnetostrictive element utilizes only stretching and contracting in the
longitudinal direction. If it is this, it will become possible to reproduce this with the conventional
vibration generator by comprising as follows. To that end, as shown in Fig. 2 (D), where the
oscillator (2) is installed in the main body (1) and the movable part (3) is the place where the
oscillator (2) is installed on the same body (1) Fixed installation in different places. In this way,
the movable part (3), which expands and contracts with the input signal, directly expands and
contracts the body itself between these two places installed in the body (1). Thus, as if the giant
magnetostrictive element expands and contracts, vibrations occur as the main body (1) itself
expands and contracts. This is described in Patent Document 4 Japanese Patent Application No.
2012-210643 (unpublished by the same applicant at the time of the present application). The
movable portion 3 of the oscillator 1 installed on the diaphragm 4 via the fixture 2 is a speaker
connected to the place (B) of the diaphragm 4 different from the place (A) where the oscillator 1
is connected and installed system. In this way, as with the first part, each part including the
oscillator (2) and the movable part (3) is arranged firmly in a fixed connection so that the
vibration transmission path is loop-shaped. It will be.
[0009]
Definition of "Strain Vibration" Now, as understood from the above description, the basic
definition of the term "strain vibration" is the vibration of the giant magnetostrictive element
itself in the giant magnetostrictive element actuator. In order to apply vibrations to a target, such
as air or an object, a conventional speaker or vibration generator directly vibrates the object
itself. For example, to make sound waves in the air, the cone of the speaker directly reciprocates
air by pushing and pulling the air directly, and in order to give vibration to the object, it
reciprocates by shaking the object situation back and forth or up and down. I was giving exercise.
Now let's consider how much vibrational energy is given to the subject. For example, in the case
of air, the forward and backward motion of the cone is transmitted as the forward and backward
motion of the air. Speaking of why air also moves, the molecules of the air first moved one after
another push the molecules of the next air, and the vibration is transmitted. However, there is
almost no increase in temperature no matter how hard the air is pushed in terms of a cone or the
like. In other words, energy is consumed by moving the position of the air molecules themselves,
04-05-2019
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and so much energy is not transmitted to the air molecules themselves. If you shake the object in
the same way as this, the temperature of the object will not rise so much. Reciprocating an object
to give vibration makes it so much that what constitutes the object itself does not give energy to
the molecule itself. On the contrary, what happens if you push the sealed air so that the air does
not escape? Perhaps the principle of the pressure cooker will increase the temperature of the air
in some ways. This is also true for objects. To give energy efficiently to something you want to
vibrate, you need to hold the target firmly and then give it vibration. The principle of the present
invention is to specifically show such a method, and the vibration generated by this means that
the object is made to be large, small or continuous motion in various directions as strain
vibration. is there. This is different from the vibration in which the object reciprocates back and
forth. Then, in order to transmit the strain vibration, the source and the purpose to which the
vibration is to be given are contacted, joined, or brought into contact while applying pressure.
[0010]
By the way, there is a phenomenon that distortion occurs in the substance itself when a magnetic
field is applied to the giant magnetostrictive substance, and a magnetostriction phenomenon.
There is also an inverse magnetostriction phenomenon in which an electromagnetic wave is
generated when the reverse giant magnetostrictive material is distorted, and this is applied to the
diaphragm of the present invention, as shown in the right figure of FIG. Depending on the nature
of the giant magnetostrictive substance, an electromagnetic wave is generated simultaneously
with the sound wave. In addition, a diaphragm is "a part, a part, or parts which were installed in
order to finally transmit a vibration to a target in a bone conduction vibration generation
system", and it is a vibrator, and speaking of a speaker, "corn paper" "If the vibrator is placed on
the object to vibrate, the" object pan ", or if the oscillator itself is used in contact with the object
to be vibrated, the" body ", etc. It is In other words, it is to select a giant magnetostrictive
substance as the material of the portion installed to finally transmit the vibration to the target.
The invention of the present application is as follows in which the "Major principle 1 of the
invention" and the "major principle 2 of the invention" are established simultaneously. Finally, a
giant magnetostrictive material is selected as the material of the part installed to transmit the
vibration to the target, and each part including the oscillator (2) and the movable part (3) so that
the vibration transmission path becomes a loop. There is a strained vibration generating system
where strained vibration is generated, which is arranged in a firmly fixed connection.
[0011]
Thus, although the vibration plate (4) or the main body (1) installed to finally transmit the
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5
vibration to the target is a material including a giant magnetostrictive material in the material, it
is needless to say that the giant magnetostrictive material It is also possible to use only as the
material, or to mix other materials with the giant magnetostrictive substance. Note that this
electromagnetic wave is a type of distorted vibration that is called bone conduction wave,
transverse wave, material wave, S wave, elastic wave, etc. depending on the field, and is different
from the sound wave called compressional wave of air. I shall The oscillator (2) is a vibration
generator such as an electromagnetic actuator or a super magnetostrictive element actuator. The
main body (1), the oscillator (2), the movable portion (3), and the diaphragm (4), which are main
parts of the present invention, may be appropriately connected with a fixing tool. The main body
(1), the oscillator (2), the movable portion (3), and the diaphragm (4), which are main parts of the
present invention, may be appropriately formed as a part of the parts as a joint to connect and fix
the parts. is there.
[0012]
In the present invention, each part is in order so that the transmission source and the oscillation
destination are in a loop shape, that is, the oscillator (2), the movable portion (3), the diaphragm
(4), the body (1), and the oscillator again. It is connected in series with (2), and it can be said that
the principle is similar to a laser oscillation circuit or a radio wave oscillation circuit when the
viewpoint is changed a little. If so, it is also possible to insert and set an elastic body made of a
material such as a leaf spring or plastic rubber in the form of being inserted between any of
these parts and use the resonance action of the elastic body, Details are disclosed in the
examples. By the way, like the edge elastic body around the cone of the conventional speaker, a
material such as thin light urethane material is selected as the material of the edge so as not to
disturb the reciprocating motion of the cone which is the diaphragm as much as possible. Unlike
the above, the elastic body of the present invention is for utilizing the resonance action, and
utilizes the plate spring, the plastic rubber, etc. so as to prevent the reciprocating motion of the
diaphragm as much as possible. The usage of is different between the conventional speaker and
the present invention.
[0013]
In addition, in order to make it easy to fix or stably generate vibrations, adjustment of the
position where each part is installed or adjustment of the elastic body that also uses the
resonance function, etc., the diaphragm (4), etc. It is possible that the parts installed for
transmitting the vibration to the target are installed and configured while applying a pressure in
advance. As another method of applying pressure, for example, in the case of the diaphragm (4),
04-05-2019
6
it is formed in such a way that it is slightly different from the shape intended for this, and the
vibration is made at the intended place for the intended shape. After the plate (4) is installed, the
diaphragm (4) itself may be pre-loaded. For example, the flat panel-shaped diaphragm (4) may be
curved and installed, or the plate-shaped diaphragm (4) formed by bending in advance may be
installed as a flat plate. The bone conduction vibration generation system, the strain vibration
generation system, the bone conduction speaker system, and the elastic wave generator are
limited to generating sound waves, but the basic principle of vibration generation is the same. As
the vibration generating system, in the present invention, the difference between these names is
assumed to be different only for the same system.
[0014]
It is possible to construct a system that generates more electromagnetic waves at the same time
as vibrations and sound waves, and in the case of speakers, more vivid sound reproduction. In
addition to giving vibration to the air as a bone conduction speaker, in addition to bone
conduction speakers that use a table as a speaker, bone conduction earphones, vibration testers,
underwater, underground, in substance, etc. It could be used as a vibration generating system to
give vibration to
[0015]
Comparison with Patent Literatures The inventions described in Patent Literatures 1 and 2 are
similar to the invention of the present application, because each part is loop-connected and the
vibration plate is a bone conduction speaker provided with a diaphragm using a specific material.
It is assumed that electromagnetic waves (transverse waves) are generated accordingly (see
0001 of Patent Document 1), but using the diaphragm of the present invention more effectively
adds electromagnetic waves (transverse waves) to sound waves. Can be generated.
[0016]
Although the system which generates only electromagnetic waves as a sound from low frequency
radiator 13 is also disclosed by patent documents 3, this is the principle which generates
electromagnetic waves electrically using LC parallel resonance circuit, but this application This is
an invention different from Patent Document 3 because an electromagnetic wave is generated by
physical vibration of the diaphragm.
[0017]
The principle of the present invention FIG. 1 is the principle of the present invention FIG. 2 is the
04-05-2019
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principle of the diaphragm of the present invention, the three-dimensional view of the first
embodiment is a three-dimensional view of the second embodiment, the sectional view of the
third embodiment The cross-sectional view of the fourth embodiment, the cross-sectional view of
the fifth embodiment, the three-dimensional view of the sixth embodiment, the cross-sectional
view of the elastic member-embedded oscillator, the three-dimensional view of the seventh
embodiment, the three-dimensional diagram of the eighth embodiment The figure shows a threedimensional drawing of Example 9, a three-dimensional drawing of Example 10, a threedimensional drawing of Example 11 and a three-dimensional drawing of an elastic body (5), a
three-dimensional drawing of Example 12 a three-dimensional drawing of Example 13 Is a cross
sectional view of Example 14
[0018]
(See FIG. 1B) In response to an input signal to the oscillator (2) installed in the main body (1),
vibration occurs in the form of expansion and contraction of the movable portion (3).
Since the tip of this movable portion (3) is connected to the diaphragm (4) made of super
magnetostrictive material connected to the same body (1) as the oscillator (2) is installed, the
diaphragm ( In 4), distortion occurs between the place where the main body (1) is installed and
the place where the movable part (3) is installed, which spreads over the entire diaphragm (4)
and is influenced by the nature of the super magnetostrictive substance And generate an
electromagnetic wave with the sound wave.
Various embodiments are shown below.
[0019]
An example is shown in FIG. 4 in which the form of the diaphragm is changed in order to apply
vibration to an object instead of oscillating a sound wave in the air.
It is used in such a way that any part of the diaphragm (4) made of giant magnetostrictive
material is brought into contact with an object to be vibrated. For example, placing it on a table
and letting the speaker make a speaker, or giving vibration to the ground on the ground. The
movable part (3) of the oscillator (2) installed in the main body (1) is connected to a diaphragm
04-05-2019
8
(4) made of a giant magnetostrictive substance, and this diaphragm (4) is then the oscillator (2)
The diaphragm (4) is supported and connected at the same place on the same body (1) as the one
where it was installed, and the diaphragm (4) generates distortion vibration, so that the object to
be vibrated is given to any part of the diaphragm (4) A bone conduction vibration generating
system in which a vibration transmission path can be taken out even when it is in contact, and a
vibration transmission path is arranged in a loop and firmly fixed connection.
[0020]
An example in which the main body (1) of the first embodiment is deleted and the diaphragm (4)
of the first embodiment is replaced with the main body (1) is shown in FIG. In this example, the
main body (1) is made of a giant magnetostrictive substance. The movable part (3) of the
oscillator (2) installed in the main body (1) made of super magnetostrictive material, which is a
part installed for finally transmitting the vibration to the object, installed the oscillator (2) The
target to be vibrated is connected to a different place of the same body (1) and the vibration
transmission path is arranged in a fixed connection in the form of a loop, to which part of the
body (1) Bone conduction vibration generating system that can take out vibration even when it is
in contact.
[0021]
An example using an elastic body made of a material such as a leaf spring or plastic rubber
according to the same principle as that of the second embodiment is shown in FIG. A columnar
oscillator (2) is placed at the center of the lower lid in the main body (1) of a cylindrical container
with an upper lid and a lower lid made of a giant magnetostrictive substance, and its movable
portion (3) ) Is connected in series to the body (1), and operates while utilizing the resonance
action of the elastic body (5), and the vibration transmission path is arranged in a loop shape and
firmly fixedly connected, A bone conduction vibration generating system capable of taking out
vibration regardless of which part of the main body (1) an object to which vibration is to be
brought into contact with.
[0022]
(Corresponding to claim 1 and claim 4) An example in which the article is placed on and brought
into contact with the article as appropriate to give vibration to the article is shown in FIG. Upper
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lid Lower lid With a cylindrical oscillator (2) installed downward at the center of the upper lid in
the substantially cylindrical container body (1), its movable part (3) is an elastic body (5)
connected in series The vibration transmission path is arranged in a loop-like manner in a rigid
and fixed connection, in such a manner as to be connected to the center of the lower lid of the
main body (1) via the. Finally, a disk-shaped diaphragm (4) made of a giant magnetostrictive
material is placed under the lower lid to transmit vibrations to the target, and distortion is
obtained while utilizing the resonance action of the elastic body (5). Bone conduction vibration
generating system that generates vibration. In order to use this, an object to be vibrated is
brought into contact with the diaphragm (4).
[0023]
FIG. 8 shows an example of a bone conduction speaker using a giant magnetostrictive element
actuator which is used by being appropriately brought into contact with an article. The
substantially cylindrical super magnetostrictive element (7) is erected and fixed in the depth
direction at the center of the inside (B) of the substantially cylindrical main body (1). A coil (8) is
fixedly installed around the giant magnetostrictive element (7) and a bias magnet (9) is fixedly
installed around it. Next, the movable portion (3) on the upper side of the giant magnetostrictive
element (7) is connected to the center of the substantially disk-shaped upper lid (10) made of
giant magnetostrictive material via an elastic body (5). The upper lid (10) is connected to the
main body (1) by a screw connection (11), and the vibration transmission path is arranged in a
loop shape and firmly fixedly connected, utilizing the resonance action of the elastic body (5)
Bone conduction speaker system that generates strain vibration while being able to. In order to
use this, the upper lid (10) is brought into contact with the article as appropriate to reproduce
the sound.
[0024]
FIG. 9 is a three-dimensional view of a speaker system configured by selecting an elastic-bodyinternal-type oscillator (9) according to the prior art, which is a prior art as an oscillator, Fig. 10
shows a cross-sectional view of FIG. The movable part (3) of the elastic-body-incorporated
oscillator (9) installed in the main body (1) is connected to the diaphragm (4) made of super
magnetostrictive material via the fixture (6). Then, this diaphragm (4) is supported and
connected to a different place of the same body (1) as the elastic internal oscillator (9) is
installed, and the distortion motion of the diaphragm (4) A bone conduction speaker system that
speaks and works normally without being placed in a resonance box. Also, with the elastic-bodyincorporated oscillator (9), in FIG. 9, there is a round hole at the center of the upper lid, and there
04-05-2019
10
is a lower lid in the hollow cylindrical container (15). Elastic body (5) lower bias magnet (12)
super-magnetostrictive element rod (13) upper bias magnet (14) elastic body (5) in the order of
columnar shape and the same thickness, and they are stacked one over another A coil (17)
wound around and fixed to a bobbin (16) is installed therearound, and a movable portion (18) is
placed on top of the upper elastic body (5), the tip of which is a hole in the center of the upper lid
It is installed in the form of coming out of. In the elastic-body-incorporated oscillator (9) having
such a structure, the apparent spring constant can be adjusted by the two elastic bodies (5)
placed therein, and the resonance frequency can be set to a desired value. .
[0025]
A three-dimensional view of an example of a bone conduction speaker constituted by a
diaphragm (4) made of a giant magnetostrictive substance is shown in FIG. The movable part (3)
of the oscillator (2) installed in the main body (1) is connected to the diaphragm (4) made of
super magnetostrictive material via the fixture (6), The diaphragm (4) is supported by and
connected to a different location of the same main body (1) as the oscillator (2) is installed
through the elastic body (5) in series, and the resonance of the elastic body (5) is A bone
conduction speaker which produces sound by distortion vibration of the diaphragm (4), in
particular, without being installed in a resonance box, while being able to cause waking up and
take advantage of its action. The form of this embodiment is as follows. According to the input
signal to the oscillator (2) fixedly installed in the main body (1), vibration occurs in the form of
expansion and contraction of the movable part (3). This vibration is transmitted to the diaphragm
(4) coupled by the fixture (6). At this time, the other end of the diaphragm (4) is connected and
fixed via an elastic body (5) in series in a place different from the place where the oscillator (2) of
the main body (1) is installed. The diaphragm (4) supported between (6) and the elastic body (5)
generates vibration in the form of strain movement in all directions while obtaining the
resonance action with the elastic body (5). As a result, the property of the giant magnetostrictive
substance, which is the material of the diaphragm (4), effectively works to reproduce the voice
with the generation of the electromagnetic wave.
[0026]
A three-dimensional view of an example of a bone conduction speaker constituted by a
diaphragm (4) made of a giant magnetostrictive substance is shown in FIG. The movable part (3)
of the oscillator (2) installed in the main body (1) is connected to the diaphragm (4) made of
super magnetostrictive material via the elastic body (5), The diaphragm (4) is supported and
connected to a different place of the same main body (1) as the oscillator (2) is installed via the
04-05-2019
11
fixture (6), and the resonance of the elastic body (5) is positively A bone conduction speaker that
can be vocalized by the strain vibration of the diaphragm (4), in particular, without being
installed in a resonance box, while making it possible to use it and make use of its action.
[0027]
A three-dimensional view of an example of a bone conduction speaker constituted by a
diaphragm (4) made of a giant magnetostrictive substance is shown in FIG. The movable part (3)
of the oscillator (2) installed in the main body (1) is connected to the diaphragm (4) made of
super magnetostrictive material via the fixture (6), The diaphragm (4) is supported by and
connected to a different location of the same main body (1) as the oscillator (2) is installed
through the elastic body (5) in series, and the resonance of the elastic body (5) is A bone
conduction speaker which produces sound by distortion vibration of the diaphragm (4), in
particular, without being installed in a resonance box, while being able to cause waking up and
take advantage of its action.
[0028]
A three-dimensional view of an example of a bone conduction speaker constituted by a
diaphragm (4) made of a giant magnetostrictive substance is shown in FIG. The movable part (3)
of the oscillator (2) installed in the main body (1) is a vibration composed of a giant
magnetostrictive material via the lower elastic body (5) and then the lower fixture (6) in series
The diaphragm (4) is connected to the plate (4), and then the oscillator (2) is installed via the
upper fixture (6) and the upper elastic body (5) in series. Is connected to a different location of
the same body (1), and the resonance of the two upper and lower elastic bodies (5) can be
positively caused to make use of its action, and by the strain vibration of the diaphragm (4) A
bone conduction speaker that speaks and works normally without being placed in a resonance
box.
[0029]
(Corresponding to claim 2 and claim 4) Fig. 15 shows a three-dimensional view of an
embodiment constituted by a cylindrical vibrator (19) made of a giant magnetostrictive
substance and a three-dimensional view of an elastic body (5). The tip of the movable part (3) of
the oscillator (2) installed in the main body (1) is connected in series via an elastic body (5)
04-05-2019
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consisting of a plate spring and then a lower fixing tool (6) in between Fasteners connected to a
vibrating body (19) made of giant magnetostrictive material, and subsequently this vibrating
body (19), at a different location of the same body (1) as the oscillating body (2) was installed (6)
which is supported and connected, and the resonance of the elastic body (5) can be positively
caused to make use of its action, while the voice is generated by the distortion motion of the
vibrating body (19), particularly installed in a resonance box Bone conduction speaker system
that works properly without it. The form of this embodiment is as follows. According to the input
signal to the oscillator (2) fixedly installed in the main body (1), vibration occurs in the form of
expansion and contraction of the movable part (3). This vibration is transmitted to the vibrating
body (19) made of a giant magnetostrictive material through the lower fixing tool (6) while
obtaining the resonance action of the elastic body (5) coupled to the end. At this time, since the
vibrating body (19) is supported and connected by the upper fixing tool (6) at a different place of
the same main body (1) as the oscillating body (2) is installed, The supported vibrator (19)
generates a vibration in a straining motion while obtaining resonance with the elastic body (5),
and reproduces voice with generation of an electromagnetic wave.
[0030]
(Corresponding to claim 2 and claim 4) An embodiment in which the fixing tool (6) on the
embodiment 11 has a conical shape is shown in FIG. Since the upper end of the vibrating body
(19) is supported by the main body (1) at only one vertex of the conical fixing member (20), a
more stable vibration method of the vibrating body (19) can be realized.
[0031]
A three-dimensional view of an example of a bone conduction speaker composed of a diaphragm
(4) made of a giant magnetostrictive substance is shown in FIG. The movable part (3) of the
oscillator (2) installed in the main body (1) is connected to the diaphragm (4) made of super
magnetostrictive material via the fixture (6), The diaphragm (4) is supported and connected to
the same place of the main body (1) where the oscillator (2) is installed in series via the elastic
bodies (5) installed at upper and lower two places. Sounding by the strain vibration of the
diaphragm (4) while making the resonance of the elastic body (5) positively occur and utilizing
its action, in particular bone conduction which operates normally without being installed in the
resonance box speaker. The fixedly connected arrangement of each part constitutes upper and
lower two looped vibration transmission paths.
04-05-2019
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[0032]
FIG. 18 shows a cross-sectional view of an elastic wave generator fixed to a target (21) to which
vibration is to be applied by a fixing pin (22). A cylindrical oscillator (2) is installed downward at
the center of the upper lid in the cylindrical container body (1) with an upper lid and a lower lid
opening, and the movable portion (3) has an elastic body (5) between It is connected in series to
the center of a diaphragm (4) made of a giant magnetostrictive material in the shape of a disk,
which is installed as a lower lid at the lower lid opening of the main body (1) as a lower lid. The
vibration transmission path is arranged in a loop and firmly fixed connection. Then, the
diaphragm (4) installed as a lower lid in order to finally transmit the vibration to the object is
fixedly connected to the object (21) to be vibrated by the plurality of fixing pins (22), and the
elasticity is elastic. A vibration generating system that generates an elastic wave while utilizing
the resonance action of the body (5). Vibration can be generated according to the input signal to
the oscillator (2). It can be applied as an acoustic device by connecting to the body of a car.
[0033]
DESCRIPTION OF SYMBOLS 1 main body 2 electromagnetic type or super magnetostrictive
element type substantially cylindrical oscillator 3 movable part 4 diaphragm 5 elastic body 6
fixing tool 7 super magnetostrictive element 8 coil 9 bias magnet 10 upper lid 11 screw coupling
portion 12 lower bias magnet 13 Super magnetostrictive element rod 14 Upper bias magnet 15
Cylindrical container 16 Bobbin 17 Coil 18 Movable part 19 Vibrator 20 Conical fastener 21
Object 22 Fixing pin
04-05-2019
14
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