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JP2003102083

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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 JP2003102083
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker, a module using the same, and an electronic device such as a portable telephone device, a
communication device or a game device using the same.
[0002]
2. Description of the Related Art The prior art will be described with reference to FIGS.
[0003]
FIG. 5 is a cross-sectional view of a conventional speaker, and FIG. 6 is a partial cross-sectional
view for explaining the mounting state of a portable telephone apparatus equipped with the same
speaker.
[0004]
As shown in FIG. 5, the magnetized magnet 1 is sandwiched between the upper plate 2 and the
yoke 3 to constitute an internal magnetic circuit 4.
The frame 6 is coupled to the yoke 3 of the magnetic circuit 4.
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A diaphragm 7 is bonded to the peripheral portion of the frame 6, and a voice coil 8 coupled to
the diaphragm 7 is coupled to be fitted into the magnetic gap 5 of the magnetic circuit 4.
[0005]
FIG. 6 shows a mounting state where the speaker configured in FIG. 5 is mounted on a mobile
telephone device, the display unit 12 is coupled to the exterior case 11 of the mobile telephone
device, and the speaker 10 is provided beside the display unit 12. The operation unit 13 is
coupled to the side opposite to the coupling.
[0006]
The above-mentioned speaker requires the miniaturization of the speaker 10 and the freedom of
layout along with the miniaturization and multi-functionalization of the portable telephone which
is the set, and it is necessary to Since the parts are combined, the area of the diaphragm 7 needs
to be reduced to miniaturize the speaker 10, and the reduction of the sound pressure level has
been a problem.
[0007]
An object of the present invention is to provide an excellent speaker which can be miniaturized.
[0008]
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has
the following constitution.
[0009]
According to the first aspect of the present invention, the first diaphragm and the second
diaphragm are acoustically coupled to each other by using the sealed space as a medium.
Thus, a sealed space is provided between the two diaphragms, and by designing the position and
shape of each diaphragm using this sealed space, the size of the portable telephone device can be
reduced even if a large second diaphragm is used. It is possible to obtain the effect of realizing
improvement in the degree of freedom of design and design.
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[0010]
In the invention according to claim 2 of the present invention, the first diaphragm is smaller than
the second diaphragm, and the first diaphragm is provided at the end of the second diaphragm
via the sealed space. It is what was constructed.
Thus, by designing the first diaphragm position at a part of the end of the second diaphragm
using this sealed space, the mobile phone device can be further miniaturized even if a large
diaphragm is used, The effect of achieving an improvement in the degree of freedom in design
can be obtained.
[0011]
According to the third aspect of the present invention, the second diaphragm is formed of a
sheet-like transparent film.
As a result, the display unit can be designed under the transparent diaphragm, and the display
unit can be seen through, and the sound pressure level by the large diaphragm can be achieved
while achieving downsizing of the mobile phone device and improvement of design freedom. The
action and effect of realizing the improvement can be obtained.
[0012]
According to a fourth aspect of the present invention, the area of the second diaphragm is larger
than the area of the first diaphragm.
As a result, it is possible to obtain the effect of realizing the improvement of the sound pressure
level by the large diaphragm.
[0013]
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In the invention according to claim 5 of the present invention, the speaker according to any one
of claims 1 to 4 is provided adjacent to the display unit, and the front surface of the display unit
is covered with the second diaphragm of the speaker It is what was constructed. As a result, it is
possible to obtain the effect of miniaturizing the display unit and the speaker and integrating
them.
[0014]
According to the sixth aspect of the present invention, an electronic device is configured by
including the module according to the fifth aspect and the operation unit. As a result, it is
possible to obtain the operation and effect that the display unit, the operation unit, and the
speaker can be miniaturized and integrated.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below with reference to the drawings.
[0016]
(First Embodiment) The invention according to the first aspect of the present invention will be
described with reference to the first embodiment.
[0017]
FIG. 1 is a cross-sectional view of a loudspeaker according to an embodiment of the present
invention.
[0018]
As shown in FIG. 1, the magnetized magnet 21 is sandwiched between the upper plate 22 and the
yoke 23 to form an internal magnetic circuit 24.
The frame 26 is coupled to the yoke 23 of the magnetic circuit 24.
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A first diaphragm 27 is bonded to the peripheral portion of the frame 26, and the voice coil 28 is
coupled to the first diaphragm 27 and coupled so as to be fitted into the magnetic gap 25 of the
magnetic circuit 24. Are configured.
Furthermore, a panel 29 is coupled to the peripheral edge of the frame 26, and a substantially
flat second diaphragm 30 is bonded to the panel 29 to seal between the first diaphragm 27 and
the second diaphragm 30. The space 31 is acoustically coupled and configured.
[0019]
With this configuration, the shape of the sealed space 31 can be freely designed, and the position
and shape of each diaphragm can be designed, thereby achieving downsizing of the mobile
phone device and improvement in the degree of freedom of design even when using a large
diaphragm. It can be done.
[0020]
Second Embodiment The second embodiment of the present invention will be described below
with reference to the second aspect of the present invention.
FIG. 2 shows a cross-sectional view of a loudspeaker according to an embodiment of the present
invention. The second embodiment differs from the first embodiment in that the first diaphragm
27 is smaller than the second diaphragm 30, and the first diaphragm 27 is attached to the end of
the second diaphragm 30 via the sealed space 31. An outer peripheral portion of the frame 26 to
which the first diaphragm 27 is coupled is connected to a part of the end portion of the panel 29
on which the second diaphragm 30 is supported. Thereby, even if the large second diaphragm 30
is used by designing the position of the first diaphragm 27 to a part of the end portion of the
second diaphragm 30 by using the sealed space 31. It is possible to realize further
miniaturization of the mobile telephone device and improvement in the freedom of design.
[0021]
Third Preferred Embodiment The third preferred embodiment according to the present invention
will be described below with reference to the third preferred embodiment. A difference from the
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first embodiment is that the second diaphragm 30 is formed of a sheet-like transparent film.
Thus, by designing using the lower space of the sheet-like transparent film, the lower one of the
transparent film can be seen through. With this configuration, the arrangement of parts can be
arranged while effectively utilizing not only the lateral direction but also the height direction.
Therefore, even if the large second diaphragm 30 is used, it is possible to realize further
downsizing of the mobile phone device and improvement in the degree of freedom in design.
[0022]
Fourth Embodiment The fourth embodiment of the present invention will be described with
reference to the fourth aspect of the present invention. By setting the area of the second
diaphragm 30 to be larger than the area of the first diaphragm 27, a large area of the surface
area of the outer peripheral portion of the set can be used as the second diaphragm 30, so an
efficient design can be realized. It can be realized.
[0023]
Fifth Embodiment The fifth embodiment of the present invention will be described with reference
to the fifth embodiment of the present invention. FIG. 3 is a partial cross-sectional view for
explaining the mounting state of a part of the mobile telephone device equipped with the speaker
according to the embodiment of the present invention.
[0024]
FIG. 3 shows a module 50 including at least a display unit 41 and a speaker 40, and covers the
second diaphragm 30 according to claims 1 to 4 on the front surface of the display unit 41 and
the display unit 41. It is the module 50 arrange | positioned and mounted | worn with the shape.
At this time, the second diaphragm 30 is made of a transparent film sheet. Thus, by setting the
display unit 41 in the lower space of the sheet-like transparent film and modularizing it, the
lower one of the transparent film can be seen through. Therefore, even if the large second
diaphragm 30 is used, it is possible to realize further downsizing of the mobile phone device and
improvement in the degree of freedom in design.
[0025]
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Furthermore, by modularizing in this way, it is possible to achieve process reduction at the time
of set production and rationalization at the component distribution stage, and cost reduction can
be realized.
[0026]
Sixth Embodiment The sixth embodiment of the present invention will be used to explain the
sixth aspect of the present invention.
FIG. 4 is a partial cross-sectional view for explaining a mounting state of a part of a mobile
telephone device equipped with a module according to an embodiment of the present invention.
[0027]
FIG. 4 shows a portable telephone apparatus 51 comprising at least a display unit 41, an
operation unit 42 and a speaker 40.
[0028]
According to FIG. 4, the portable telephone apparatus 51 is configured using the module 50
described in the fifth embodiment, and the module 50 and the operation unit 42 are coupled to
the exterior case 52 to form the main part thereof. ing.
At this time, the second diaphragm 30 is made of a transparent film sheet. As a result, the display
unit 41 is set in the lower space of the sheet-like transparent film, and the operation unit 42 is
set on the side of the display unit 41 to realize downsizing of the mobile telephone device 51 and
improvement of design freedom. be able to.
[0029]
In addition, it is possible to set both the display unit 41 and the operation unit 42 in the lower
space of the sheet-like transparent film, and further downsizing of the mobile phone device 51
and improvement in freedom of design can be realized. .
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[0030]
This set can be widely applied not only to mobile phones but also to electronic devices such as
communication devices, game devices, liquid crystal televisions, personal computers, and
navigation devices.
[0031]
As described above, according to the present invention, the first diaphragm and the second
diaphragm are acoustically coupled to each other by using the sealed space as a medium.
As a result, by freely designing the position and shape of each diaphragm, and further, the
module using the same and the electronic devices thereof, the mobile phone device can be
miniaturized even if the large second diaphragm is used. , Can improve the freedom of design.
[0032]
As described above, the present invention can provide an excellent speaker capable of realizing
miniaturization of the speaker and the mobile telephone device, and the industrial value thereof
is extremely large.
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