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JP2014068112

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DESCRIPTION JP2014068112
Abstract: To provide a speaker system with a wide selection of diaphragm shapes and materials.
An oscillator 1 is installed on a diaphragm 4 directly or via a fixture 2 or the like. The movable
portion 3 of the oscillator 1 is connected via a spring 5 or an elastic body in series to a place B
different from the place A where the oscillator 1 is connected and installed on the same
diaphragm 4, and the spring 5 or A speaker system that operates by obtaining body resonance.
[Selected figure] Figure 1
スピーカーシステム
[0001]
It is an invention of a speaker system.
[0002]
Recently, bone conduction theory speaker that directly vibrates a substance is used instead of the
theory of making sound vibrate by applying vibration to air with cone paper which is a
conventional technology using electromagnetic actuator or super magnetostrictive element
actuator in the speaker field. There are also inventions that give vibration directly to the inside of
an object to make various objects such as doors and tables as speakers.
The present invention relates to a loudspeaker system of this bone conduction theory.
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1
[0003]
JP 2007-19623 JP 2012-49653
[0004]
There are two types of bone conduction theory speakers: one using an electromagnetic actuator
and one using a giant magnetostrictive element actuator, and one of the principles in the prior
art in this field is noticed.
The task is to create a new speaker system based on this theory clearly. The prior art system is as
shown in FIG. The movable portion (3) of the oscillator (1) installed on the diaphragm (4) via the
fixture (2) is different from the diaphragm (4) at the place (A) where the oscillator (1) is
connected and installed. ) Speaker system connected to location (B). Such structures are disclosed
in the following prior art. Patent Document 1: Japanese Patent Application Publication No. 200719623 The vibration generating actuator is fixed to the vibrating plate via a housing, and a
vibration transmitting material which is a movable part is directly connected to the vibrating
plate. In addition, although vibration is given in parallel to the plate surface in claim 2 of this
document, in the vibration generating system according to the present invention, the direction of
giving vibration is not specified, so it will be introduced as a sample . In the patent document 2
JP 2012-49653A, the super-magnetostrictive actuator is fixed to the vibrating plate via the
bracket, and the head, which is a movable part, is in contact with the vibrating plate as well. It
will be described how this prior art system works specifically. First, in response to an input signal
to the oscillator (1), movement occurs such that the movable part (3) expands and contracts. This
motion is transmitted to the location (B) of the vibratory plate (2) to which the movable part (3)
is connected. At this time, since the oscillator (1) is connected to the place of (A) of the vibrating
plate (2) through the fixing tool, the vibrating plate between these two places (A) and (B)
Vibration occurs in the form of (2) flexing and stretching. In this prior art, it is the shape and
material of the vibration plate (4) that is most deeply involved in the sound quality, but it is a real
problem that a good material has not been found. The oscillator (1) is a conventional
electromagnetic actuator or super magnetostrictive element actuator.
[0005]
In order to solve the above problems of the conventional speaker system, the present invention
provides the following speaker system as shown in the lower part of FIG. The movable part (3) of
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the oscillator (1) installed on the vibrating plate (4) via the fixing tool (2) is also on the vibrating
plate (4) via the spring (5) in series, A speaker system that is connected to a place (B) different
from the place (A) where the oscillator (1) is connected and that operates using the generated
resonance and the resonance of the spring (5). In addition, it is also possible to use an elastic
body instead of the spring (5).
[0006]
The resonance action can be adjusted by selecting the material, size, and shape of the spring (5),
and the generated vibration can be increased, and the frequency characteristics can be improved.
Become wider. It is not necessary to directly move the object to be vibrated, and only the moving
part (3) actually moves, and since these may be light materials, almost no centrifugal force is
applied to the object to be vibrated, kinetic energy There is little wasteful consumption of When
the input signal to the oscillator (1) disappears, the return force of the spring (5) immediately
stops the light moving part (3), so the input responsiveness is extremely high. The input signal to
the oscillator (1) can correspond to any changing waveform. Because of its simple structure, its
application range is wide, from small ones to large ones. Because the magnitude of vibration can
be designed freely, it is possible to be applied to fields such as vibration testers and vibrators as
well as the speaker field.
[0007]
Is an explanatory drawing. 3 is a three-dimensional view of Example 1. FIG. 7 is a cross-sectional
view of Example 1. FIG. 12 is a three-dimensional view of the second embodiment, a threedimensional view of the third embodiment, a three-dimensional view of the fourth embodiment. 7
is a three-dimensional view of Example 5. FIG.
[0008]
Hereinafter, an embodiment of the present invention will be described based on the lower
drawing of FIG. In response to an input signal to the oscillator (1), movement occurs in the form
of expansion and contraction of the movable part (3). This motion is transmitted to the location
of (B) of the diaphragm (2) to which the spring (5) is connected while obtaining the resonance
action of the spring (5) coupled in series at the end. At this time, since the oscillator (1) is
connected to the place of (A) of the vibrating plate (2) through the fixing tool, the vibrating plate
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between these two places (A) and (B) In (2), vibration occurs in the form of bending and
stretching.
[0009]
The three-dimensional view of what made the spring (5) a plate spring is shown in FIG. 2 and the
cross-sectional view in FIG.
[0010]
Fastener (2) A three-dimensional view of an example in which the form of the fastener (6) is
changed is shown in FIG.
The mover (3a) and the vibrating arm (3b) form the movable portion (3).
[0011]
A three-dimensional view of an example in which the diaphragm (4) has an open box shape is
shown in FIG.
[0012]
A three-dimensional view of an example of a stand-type speaker is shown in FIG.
The stand (8) holds the diaphragm (6) via the buffer portion (7).
[0013]
A three-dimensional view of an example in which a stand-type speaker is formed is shown in FIG.
The movable part (14) of the oscillator (13) installed on the diaphragm (9) via the cap (10), the
fixture (11) and the pedestal (12) is a fixture (15) consisting of an elastic body between The
resonance action of the fixing member (15) made of an elastic body is obtained, which is also
connected in series on the diaphragm (9) at a place different from the place where the oscillator
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(13) is connected and installed. While operating.
[0014]
DESCRIPTION OF SYMBOLS 1 substantially cylindrical oscillator 2 which is an electromagnetic
actuator or super magnetostrictive element actuator 2 fixture 3 movable part 3a mover 3b
vibration arm 4 diaphragm 5 spring 6 fixture 7 buffer part 8 stand 9 diaphragm 10 cap 11
fixture 12 pedestal 13 oscillator 14 movable portion 15 fixture comprising elastic body
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