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JP3153377

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DESCRIPTION JP3153377
Abstract: A dual-channel speaker is provided which is thin, has a good sound effect, and is low in
cost. In this speaker, in particular, the diaphragm 9 has a substantially conical bottom opening
side facing downward, ie, directed to (the bottom surface) of the basket frame 2 and an upward
substantially conical top side fixed ring 12, hollow wave shape It is passed through the center of
the damper 15 and the top inner edge 10 of the diaphragm 9 is directly fixed to the top of the
voice coil. The outer edge 16 of the hollow wave-like damper 15 is bonded to the upper edge 14
of the fixed ring 12 and the outer edge 11 of the diaphragm 9 to the lower edge 13 of the fixed
ring 12. It is fixed. [Selected figure] Figure 1
Dual channel speaker
[0001]
The present invention relates to a dual channel speaker.
[0002]
A speaker is a device which converts an electrical signal into an audio signal, as is well known.
The speaker is an important part on the audio output side of electronic products and has a wide
range of application, such as portable audio players represented by Walkman, stereo, wireless
communication, multimedia computer, recording process or electronic dictionary etc. It can be
installed in a type of earphone or headphone to listen to voice or music, and can be connected to
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1
a telephone to make a call.
[0003]
Currently, commercially available speakers are usually U-shaped iron fixed directly to the bottom
of the basket frame, on top of which a magnet, a washer and a voice coil are sequentially stacked,
and finally a dust cap is provided on the top of the voice coil. The diaphragm is provided at the
edge of the top surface of the basket frame, and the damper is provided below the diaphragm. In
this case, the aperture of the diaphragm is directed upward (forward in the used state), that is,
the cone angle of the diaphragm is directed toward the basket frame. This type of speaker is
described, for example, in Patent Document 1 and the like.
[0004]
Utility model registration No. 3074246
[0005]
However, in the above-described conventional speaker structure, there is a problem that the
sound from the speaker is limited, it is difficult to generate a real sound, and the best sound
effect can not be exhibited.
In addition, since the thickness of the speaker can not be reduced further due to such a structure,
the size of the speaker is limited, and a vibration system dumping (a phenomenon in which
energy of vibration and sound is converted into heat energy and dissipated There is a problem
that) is large and the sound effects are normal (ordinary) but expensive.
[0006]
The present invention solves such conventional problems, and aims to provide a dual-channel
speaker which is thin, has a good sound effect, is low in cost, and is high in marketability.
[0007]
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2
In order to achieve the above object, the dual channel speaker of the present invention comprises
the following first and second embodiments.
In the first embodiment, a basket frame (2), a hollow wave-like damper (15) provided at the top
of the basket frame (2), a fixed ring (12) provided outside the damper (15), A diaphragm (9)
provided between the basket frame (2) and the damper (15), a U-shaped iron (3) provided
between the basket frame (2) and the diaphragm (9), the U The voice coil (8), which is between
the form iron (3) and the diaphragm (9) and has one side fitted in the U form iron (3), the inside
of the U form iron (3) and the voice coil (8) The lower magnet (4), the washer (5), the n-type
copper sleeve (6), the upper magnet (7), and the diaphragm (9), which are sequentially stacked
from the bottom to the top. A dust cap (18) and one side of the basket frame (2) The diaphragm
(9) has a terminal (1) electrically connected to the coil (8) for signal output, the opening of the
diaphragm (9) is downward, the cone angle is upward, and the center of the damper (15) is The
top end of the diaphragm (9) is directly connected to the top of the voice coil (8), and the damper
(15) is provided. The outer edge (16) and the upper edge (14) of the fixed ring (12), and the
outer edge (11) of the diaphragm (9) and the lower edge (13) of the fixed ring (12) To be fixed to
the top surface of the basket frame (2). In this case, the lower magnet (4) and the washer (5) are
sequentially stacked up and provided inside the n-type copper sleeve (6), and the upper magnet
(7) is the top of the n-type copper sleeve (6). Is preferably provided. Moreover, it is preferable
that the material of this lower magnet (4) and upper magnet (7) is a neodymium iron boron
magnet (Neodymium magnet / Nd-Fe-B Sintered Magnets). Furthermore, preferably, the inner
edge (17) of the damper (15) is further connected to the diaphragm (9). In the second
embodiment, a basket frame (2), a hollow wavy damper (15) provided at the top of the basket
frame (2), an outer edge of the damper (15), and a top of the basket frame (2) Cover (19) for
positioning the damper (15), the diaphragm (9) provided between the basket frame (2) and the
damper (15), the basket frame (2) and the vibration U-shaped iron (3) provided between the
plates (9), voice between the U-shaped iron (3) and the diaphragm (9), one side of which is fitted
in the U-shaped iron (3) Lower magnet (4), washer (5), n-type copper sleeve (6, provided inside
coil (8), U-shaped iron (3) and voice coil (8) and sequentially overlapping from bottom to top ),
The upper magnet (7) and the top of the diaphragm (9) A dustproof cap (18) provided, and a
terminal (1) provided on one side of the basket frame (2), electrically connected to the voice coil
(8), and provided for signal output, the diaphragm (9) has an opening facing downward, a conical
angle upward, and is provided in an inverted conical shape passing through the center of the
damper (15), and the inner edge (10) of the top of the diaphragm (9) is Directly fixed to the top
of the voice coil (8), and the outer edge (16) of the damper (15) and the top positioning hole (20)
of the cover (19), and the diaphragm (9) The outer edge (11) and the inner side of the bottom of
the cover (19) are attached to each other and then connected to be fixed to the top surface of the
basket frame (2).
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In this case, the lower magnet (4) and the washer (5) are sequentially stacked up and provided
inside the n-type copper sleeve (6), and the upper magnet (7) is the top of the n-type copper
sleeve (6). Is preferably provided. Moreover, it is preferable that the material of this lower
magnet (4) and upper magnet (7) is a neodymium iron boron magnet (Neodymium magnet / NdFe-B Sintered Magnets). Furthermore, preferably, the inner edge (17) of the damper (15) is
further connected to the diaphragm (9).
[0008]
The dual channel speaker of the present invention has the following effects due to the
configurations of the first and second embodiments. (1) The diaphragm (9) is oriented with the
opening toward the basket frame (2) side, the distance from the U-shaped iron (3) to the edge of
the diaphragm (9) is reduced, and the height of the speaker is reduced However, the damper (15)
is provided on the diaphragm (9) to create a double sound wave and the sound effect of the
speaker is enhanced by the design of the dual channel speaker where the sound wave is
transmitted in two directions back and forth It is possible to improve the usage effect
(performance) of the speaker, etc., and to reduce the cost, thereby realizing a speaker recognized
by more users and expanding the market. . (2) The size of the speaker is small, thin, simple in
structure, damping of vibration system (the phenomenon of converting energy of vibration and
sound into heat energy and dissipating it) is reduced, sound effect is good, At the same time as
the cost is reduced, the technical means according to the first and second embodiments broadens
the range of use of this dual channel speaker, and can be used alone as a speaker, together with
other equipment. It can also be used.
[0009]
The perspective view which shows the dual channel speaker in 1st Embodiment of this invention
It is an exploded perspective view which shows the structure of each part of the dual channel
speaker. The perspective view which shows the double channel speaker in 2nd Embodiment of
this invention An exploded perspective view showing the configuration of each part of the dual
channel speaker
[0010]
Next, a mode for carrying out the invention will be described with reference to the drawings.
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1 and 2 show a first embodiment. As shown in FIGS. 1 and 2, the dual channel speaker includes a
basket frame 2, a fixed ring 12, a hollow wave damper 15, a diaphragm 9, a U-shaped iron 3, a
voice coil 8 and a lower magnet. 4, washer 5, n-type copper sleeve 6, upper magnet 7, dust cap
18, and terminal 1 are provided.
[0011]
The basket frame 2 is formed in a bottomed substantially circular frame shape having an opening
on the top surface. In this case, the top surface of the basket frame 2 is circularly opened, the
outer peripheral surface is formed in a substantially circular frame shape, a cylindrical boss is
formed at the center of the bottom surface, and a plurality of ribs are radially formed around it.
Ru.
[0012]
The fixed ring 12 is formed in a generally circular ring shape so as to be installable on the top
surface (edge) of the basket frame 2. The fixed ring 12 is provided on the outside (edge) of the
hollow wave-like damper 15.
[0013]
The hollow wavelike damper 15 is formed in a generally circular shape so as to be installable on
the top surface (edge) of the basket frame 2, and a hollow portion is formed at the center thereof.
This hollow wavelike damper 15 is provided on the top surface of the basket frame 2 via a fixed
ring 12.
[0014]
The diaphragm 9 is formed in a substantially conical shape having an opening at the bottom so
as to be installable on the top surface (edge) of the basket frame 2, and the top center is opened
in a circle. The diaphragm 9 is provided between the basket frame 2 and the hollow wave-like
damper 15.
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[0015]
The U-shaped iron 3 is formed in a cylindrical shape as a whole so that it can be installed at the
center of the bottom of the basket frame 2. The U-shaped iron 3 is disposed at the center of the
bottom surface of the basket frame 2 and disposed between the basket frame 2 and the
diaphragm 9.
[0016]
The voice coil 8 is formed into a generally cylindrical shape so as to be fittable into the U-shaped
iron 3. The voice coil 8 has one end at one end thereof fitted in the U-shaped iron 3 and is
disposed between the U-shaped iron 3 and the diaphragm 9.
[0017]
The lower magnet 4, the washer 5, the n-type copper sleeve 6, and the upper magnet 7 are each
formed in a cylindrical shape so as to be disposed inside the U-shaped iron 3 and the voice coil 8.
The lower magnet 4, the washer 5, the n-type copper sleeve 6, and the upper magnet 7 are
directed to the inside of the U-shaped iron 3 and the voice coil 8 from the lower U-shaped iron 3
to the upper voice coil 8 (lower magnet 4 , Washer 5, n-type copper sleeve 6, and upper magnet
7 in this order).
[0018]
The dust cap 18 is formed in a cylindrical shape so as to be installable at the top opening of the
diaphragm 9. The dust cap 18 is provided at the top opening of the diaphragm 9.
[0019]
The terminal 1 is a terminal for providing a signal output, and is electrically connected to the
voice coil 8 and provided at a predetermined position on the outer peripheral surface of the
basket frame 2.
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[0020]
In this speaker, in particular, the diaphragm 9 has a substantially conical bottom opening side
facing downward, ie, directed to (the bottom surface) of the basket frame 2, and the top side of
the upward conical shape is fixed to the center of the fixed ring 12 and the hollow wavy damper
15. Also, the top inner edge 10 of the diaphragm 9 is directly fixed to the top of the voice coil 8.
The outer edge 16 of the hollow wave-like damper 15 is bonded to the upper edge 14 of the
fixed ring 12 and the outer edge 11 of the diaphragm 9 to the lower edge 13 of the fixed ring 12.
It is fixed. By doing this, the opening of the bottom of the diaphragm 9 is directed downward, the
distance from the U-shaped iron 3 to the edge of the diaphragm 9 is reduced, and the height of
the speaker can be lowered. The hollow wave-like damper 15 is provided on the diaphragm 9 to
create a double sound wave, and the double channel speaker design in which the sound wave is
transmitted in two directions before and after the sound effect of the speaker is enhanced to use
the speaker The effect (performance) can be improved. Furthermore, the overall volume of the
speaker can be reduced, cost can be reduced, space and price can be advantageous compared to
conventional speakers of this type, and industrial applicability can be improved.
[0021]
Further, in this speaker, in particular, the lower magnet 4 and the washer 5 are provided inside
the n-type copper sleeve 6 with the washer 5 superimposed on the lower magnet 4, and the
upper magnet 7 is the top surface of the n-type copper sleeve 6 Provided in With such an
arrangement, the speaker can work normally, the sound can be output fluently, and the noise
generation rate can be reduced.
[0022]
Furthermore, in this speaker, in particular, the materials of the lower magnet 4 and the upper
magnet 7 are respectively neodymium iron boron magnets (Neodymium magnet / Nd-Fe-B
Sintered Magnets), the magnet of this material is the lightest, and the magnetic force is the most
As it is strong, it is ideal for ultra thin speakers.
[0023]
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7
Furthermore, in this speaker, in particular, the inner edge 17 of the hollow wavelike damper 15
is connected to the diaphragm 9.
As a result, double sound waves are generated, the sound wave transmission method is stabilized,
the interference rate can be reduced, and the acoustic effect of the speaker can be enhanced.
[0024]
And, in this speaker, the combination of the diaphragm 9 and the hollow wave-like damper 15
makes the whole structure simple and powerful, improves the sound effect and reduces the cost,
compared with the existing existing speakers. Performance, practicality, and industrial
applicability are all excellent.
[0025]
In this embodiment, the diaphragm 9 has a substantially conical shape, but may have a
substantially pyramidal shape.
Moreover, the speaker of this embodiment can be used in accordance with other accessories. For
example, the use range of the amplifier further expands its application range, and the practicality
and industrial applicability further improve.
[0026]
3 and 4 show a second embodiment. As shown in FIGS. 3 and 4, the dual channel speaker
includes a basket frame 2, a cover 19, a hollow wave-like damper 15, a diaphragm 9, a U-shaped
iron 3, a voice coil 8, and a lower magnet 4. , The washer 5, the n-type copper sleeve 6, the upper
magnet 7, the dustproof cap 18, and the terminal 1.
[0027]
The basket frame 2 is formed in a substantially box-like frame shape having an opening on the
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top surface. In this case, the basket frame 2 is formed such that the top surface of the rectangle is
opened in a substantially oblong shape, the outer peripheral surface is formed in a substantially
rectangular frame shape, a cylindrical boss is formed in the center of the bottom, and a plurality
of ribs are formed around it Are formed radially.
[0028]
The cover 19 is formed in a substantially box-like frame shape covering the top surface (edge) of
the basket frame 2 so as to cover the top surface and have an opening at the bottom surface so
as to be polymerizable. In this case, the cover 19 is opened in a substantially rectangular bottom
surface, and formed in a frame shape having a substantially rectangular outer peripheral surface,
and the positioning hole 20 facing the top surface of the basket frame 2 and the bottom surface
at the center of the top surface. A circular frame is formed, and a plurality of ribs are radially
formed around the frame. The cover 19 is at the outer (peripheral) edge of the hollow wavelike
damper 15.
[0029]
The hollow wave-like damper 15 is formed in a circular shape as a whole so as to be installable in
the positioning hole 20 on the top surface of the cover 19, and a hollow part is formed at the
center thereof. The hollow wave-like damper 15 is positioned by the positioning holes 20 of the
cover 19 and provided on the top surface of the basket frame 2.
[0030]
The diaphragm 9 is formed in a substantially pyramidal shape having an opening at the bottom
so as to be installable on the top surface (edge) of the basket frame 2, and the center of the top is
circularly opened. The diaphragm 9 is provided on the top surface of the basket frame 2 and
disposed between the basket frame 2 and the hollow wave-like damper 15.
[0031]
The U-shaped iron 3 is formed in a cylindrical shape as a whole so that it can be installed at the
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9
center of the bottom of the basket frame 2. The U-shaped iron 3 is disposed at the center of the
bottom surface of the basket frame 2 and disposed between the basket frame 2 and the
diaphragm 9.
[0032]
The voice coil 8 is formed into a generally cylindrical shape so as to be fittable into the U-shaped
iron 3. The voice coil 8 has one end at one end thereof fitted in the U-shaped iron 3 and is
disposed between the U-shaped iron 3 and the diaphragm 9.
[0033]
The lower magnet 4, the washer 5, the n-type copper sleeve 6, and the upper magnet 7 are each
formed in a cylindrical shape so as to be disposed inside the U-shaped iron 3 and the voice coil 8.
The lower magnet 4, the washer 5, the n-type copper sleeve 6, and the upper magnet 7 are
directed to the inside of the U-shaped iron 3 and the voice coil 8 from the lower U-shaped iron 3
to the upper voice coil 8 (lower magnet 4 , Washer 5, n-type copper sleeve 6, and upper magnet
7 in this order).
[0034]
The dust cap 18 is formed in a cylindrical shape so as to be installable at the top opening of the
diaphragm 9. The dust cap 18 is provided at the top opening of the diaphragm 9.
[0035]
The terminal 1 is a terminal for providing a signal output, and is electrically connected to the
voice coil 8 and provided at a predetermined position on the outer surface of the basket frame 2.
[0036]
In this speaker, in particular, the diaphragm 9 has the bottom opening side of the substantially
pyramidal shape facing downward, ie, directed to (the bottom surface) of the basket frame 2, and
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10
the top side of the substantially pyramidal shape facing upward is the center of the cover 19 and
the hollow wavelike damper 15. Also, the top inner edge 10 of the diaphragm 9 is directly fixed
to the top of the voice coil 8.
The outer edge 16 of the hollow wave-like damper 15 is bonded to the inner edge of the
positioning hole 20 of the cover 19 and the outer edge 11 of the diaphragm 9 to the inner side of
the bottom of the cover 19. It is fixed. The lower magnet 4 and the washer 5 are provided on the
lower magnet 4 so that the washer 5 is overlapped on the inner side of the n-type copper sleeve
6, and the upper magnet 7 is provided on the top surface of the n-type copper sleeve 6.
Furthermore, the material of the lower magnet 4 and the upper magnet 7 is neodymium iron
boron magnet (Neodymium magnet / Nd-Fe-B Sintered Magnets). Then, the inner edge 17 of the
hollow wavelike damper 15 is connected to the diaphragm 9.
[0037]
By doing this, also in this speaker, it is possible to obtain the same effect as that of the first
embodiment.
[0038]
In this embodiment, the diaphragm 9 has a substantially pyramidal shape, but may have a
substantially conical shape.
Further, the speaker of this embodiment is different in application range from the first
embodiment, and is used as a general speaker.
[0039]
DESCRIPTION OF SYMBOLS 1 terminal 2 basket frame 3 U-shaped iron (U shape yoke) 4 lower
magnet 5 washer (Washer) 6 n-shaped copper sleeve 7 upper magnet 8 voice coil (voice coil) 9
diaphragm (diaphragm) (membrane) 10 inner edge 11 outer edge 12 fixed ring 13 lower edge
14 upper edge 15 damper 16 outer edge 17 inner edge 18 dust cap 19 cover 20 positioning
hole
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