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JPH1085666

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DESCRIPTION JPH1085666
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
sensation vibration device which converts an electrical signal into mechanical vibration and
mainly transmits low frequency components to the human body as mechanical vibration.
[0002]
2. Description of the Related Art A conventional sensation vibration apparatus will be described
with reference to FIG. FIG. 3 is a side cross-sectional view for explaining the concept of the
conventional acoustic type bodily sensation vibration device, wherein 20 is a main body of the
bodily sensation vibration device, 21 is a speaker attached to the main body 20 by a speaker
attachment 22; 23 is a vibrator.
[0003]
The sensation-of-motion vibration apparatus configured as described above generates sound by
inputting an audio electric signal to the speaker 21 and transmits the sound to the vibrating body
23 through space to vibrate the vibrating body 23. .
[0004]
SUMMARY OF THE INVENTION In the above-described conventional configuration, the mid-high
frequency component is also transmitted, so that the mid-high frequency component is perceived
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by the human body as an unpleasant sensational vibration or is emitted as a sound. The leakage
caused discomfort, and it was a bottleneck for quality improvement as a sensation vibration
device.
[0005]
In addition, in order to cut such middle and high frequency components, the drive amplifier
output to the speaker 21 has a problem such as increasing the production cost by providing a
filter for cutting the middle and high frequency components. The
[0006]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a body
vibration-sensing device according to the present invention comprises a magnetic circuit having
a magnetic gap, a relatively low rigidity frame mounted under the magnetic circuit, and A coil
bobbin having a coil portion inserted into a magnetic gap is coupled to an inner circumferential
portion and an outer circumferential portion is constituted by a damper coupled to the frame and
a vibrator mounted only on the frame. Vibration of the low frequency of the magnetic circuit is
transmitted to the vibrating body via the frame, and the transmission of the mid-high frequency
component by the drive of the coil bobbin is suppressed to prevent the vibration of the mid-high
frequency component in the vibrating body. In addition, it is possible to reduce the cost by
reducing the speaker mounting bracket in the conventional body sensation vibration device, the
diaphragm of the speaker, and the like.
[0007]
According to the first aspect of the present invention, there is provided a magnetic circuit having
a magnetic gap, a relatively low rigidity frame mounted under the magnetic circuit, and a coil
section in the magnetic gap. The coiled bobbin is connected to the inner peripheral portion and
the outer peripheral portion is constituted by the damper connected to the above frame, and the
vibrator attached only to the above frame, and the vibration of the magnetic circuit as a reaction
acts as a reaction The vibration of this magnetic circuit is transmitted to the vibrator via the
above-mentioned frame by utilizing the fact that it has a large mass, and the vibration of the
middle and high frequency components due to the vibration of the coil bobbin is suppressed to
be comfortable. While making it possible to provide a bodily sensation vibration device, it is
possible to reduce the cost by reducing the conventional speaker mounting bracket, the
diaphragm of the speaker, and the like.
[0008]
According to a second aspect of the present invention, the vibration transmitter is interposed
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between the frame of the first aspect and the vibrator, and a wider vibration area can be
obtained.
[0009]
An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
FIG.
(First Embodiment) FIG. 1 is a side sectional view of an embodiment of a body sensation vibration
device according to the present invention, and according to the figure, 1 is a magnetic circuit,
and a first plate 1a having a center pole and the above center A ring-shaped permanent magnet
1b inserted in the pole and a ring-shaped second plate 1d forming a magnetic gap 1c between
the center pole and the permanent magnet 1b.
[0010]
A coil bobbin 2 has a coil portion 2a fitted in the magnetic gap 1c, and an inner peripheral
portion 3 is connected to the coil bobbin 2 and an outer peripheral portion is connected to a
frame 4 connected to the lower portion of the magnetic circuit 1 The coil bobbin 2 is positioned
and held by the damper 3.
[0011]
A plate-like vibrator 5 is mounted on the frame 4 with a mounting screw 6.
[0012]
A dustproof cap 7 is mounted on the lower part of the coil bobbin 2.
In addition, in order to suppress transmission of vibration of the frequency component in the
middle to high frequency range, the material, thickness, and shape of the frame 4 are selected
and designed appropriately so that the rigidity is relatively low.
[0013]
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The sensation-of-vibration apparatus configured as described above drives the coil bobbin 2 by
the input signal input to the coil unit 2a, and the vibration of the magnetic circuit unit 1
generated as a reaction by this driving is transmitted through the frame 4 to the vibrating body 5
, To vibrate the vibrating body 5.
[0014]
Since the magnetic circuit 1 has a large mass, the vibration is a low frequency vibration, and the
rigidity of the frame 4 may be relatively low, so that the transmission of the mid-high frequency
component to the vibrator 5 due to the vibration of the coil bobbin 2 is The vibration of the low
frequency is transmitted to the vibrating body 5.
[0015]
(Second Embodiment) FIG. 2 is a side sectional view of a bodily sensation vibration device
according to another embodiment of the present invention. The same reference numerals as in
the embodiment of FIG. 1 denote the same parts, and only differences will be described.
According to the figure, 8 is a vibration transmitter inserted between the frame 4 and the
vibrator 5. When the frame 4 and the vibrator 5 are directly mounted, the vibration is strong at
the mounting portion, and the periphery is transmitted indirectly Since the vibration of the
vibrating body 5 is to be prevented from becoming uneven because of the effect of the weir, the
vibrating body 5 is indirectly vibrated by the vibration transmitting body 8 to vibrate a more
homogeneous vibration as a surface. It is done by the body 5.
[0016]
As described above, according to the sensation-of-motion vibration apparatus of the present
invention, the vibration of the low frequency of the magnetic circuit is transmitted to the
vibrating body through the frame, and the vibration of the high to high frequency generated by
the coil bobbin which is the driving portion Since it is possible to provide an extremely
comfortable sensation-vibration device, it is possible to reduce the cost by reducing the
conventional speaker mounting bracket, the diaphragm of the speaker, and the like.
[0017]
Brief description of the drawings
[0018]
1 is a side sectional view of an embodiment of the bodily sensation vibration device of the
present invention
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[0019]
Fig. 2 Side sectional view of the other embodiment
[0020]
Fig. 3 Side cross-sectional view of the conventional body vibration device
[0021]
Explanation of sign
[0022]
DESCRIPTION OF SYMBOLS 1 Magnetic circuit 1c Magnetic gap 2 Coil bobbin 2a Coil part 3
Damper 4 Frame 5 Vibrating body 8 Vibration transmitting body
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