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JP2007096620

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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
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DESCRIPTION JP2007096620
The present invention relates to a loudspeaker and a loudspeaker apparatus using the same, and
it is an object of the present invention to further reduce harmonic distortion in the loudspeaker.
In a support 6 provided for reducing harmonic distortion, among components constituting a
speaker, the outer peripheral shape is made rectangular or track-like, and straight portions and
straight portions in this outer peripheral shape The slit 10 is provided in the region of the second
edge 7 corresponding to the connection portion of the second embodiment or the connection
portion of the straight portion and the corner portion. [Selected figure] Figure 3
Speaker and structure using the same
[0001]
The present invention relates to a speaker and a structure using the same.
[0002]
In the conventional speaker, as shown in FIG. 1, the voice coil body 2 slidably disposed in the
magnetic circuit 1 is connected to the inner peripheral end of the diaphragm 3, and the outer
peripheral end of the diaphragm 3 is through the edge 4. The diaphragm 3 is connected to the
frame 5, and the back surface of the diaphragm 3 is connected to the frame 5 via the support 6
and the edge 7. The symmetry of the edges 4 and 7 in the roll direction It is known to reduce the
harmonic distortion in the speaker by making the linearity vertically symmetrical.
[0003]
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1
As prior art document information related to the invention of this application, for example,
Patent Document 1 is known.
JP, 2004-7332, A
[0004]
However, when such a speaker is mounted on a video apparatus or the like, there are shape
restrictions due to the mounting environment such as mounting on the side of the monitor
screen, and a speaker having a rectangular or track shape is required. In such a shape, the
bending rigidity of the edge 7 provided to suppress harmonic distortion of the speaker at the
connecting portion between the side and the side if it is a rectangular shape or at the connecting
portion between the side and the curve if it is a track And it is difficult to sufficiently improve the
reduction of harmonic distortion, which is the intended purpose.
[0005]
Therefore, the present invention solves such a problem and aims to further reduce harmonic
distortion in a speaker.
[0006]
And in order to achieve this object, according to the present invention, among the components
constituting the speaker, particularly in the support provided for reducing harmonic distortion,
the outer peripheral shape is made rectangular or track-like, and Slits are provided in edge
regions corresponding to the connection portions between the straight portions and the straight
portions in the outer peripheral shape or the connection portions between the straight portions
and the corner portions.
[0007]
According to this configuration, in addition to making the linearity in the upper and lower
amplitudes symmetrical in the vertical direction due to the symmetry in the roll direction,
harmonic distortion in the speaker is further reduced by providing a slit in a portion where the
bending rigidity of the second edge is high. be able to.
[0008]
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2
Hereinafter, an embodiment of the present invention will be described with reference to the
drawings.
In addition, about the structure similar to the structure mentioned above as background art, the
same code | symbol is attached | subjected and demonstrated.
[0009]
FIG. 1 is a cross-sectional view showing a speaker according to the present invention. A magnetic
circuit 1 disposed at the center of the bottom of a frame 5 is formed by combining and bonding a
magnet 1a, a plate 1b and a yoke 1c. A magnetic gap 8 opened toward the upper surface side of
the magnetic circuit 1 is formed by the inner peripheral side surface of the portion and the outer
peripheral side surfaces of the magnet 1a and the plate 1b.
[0010]
Further, the voice coil body 2 has a structure in which the coil 2 a is wound around the outer
periphery of a cylindrical main body, and is disposed slidably in the vertical direction with
respect to the magnetic gap 8. It has a structure to vibrate the diaphragm 3 connected to the
outer peripheral portion.
At the upper end portion of the voice coil body 2, a dust cap 9 is provided as a dustproof
measure.
[0011]
The outer peripheral end portion of the diaphragm 3 is connected to the open end portion of the
frame 5 via the edge 4, and the inner peripheral end portion is supported by the voice coil body
2.
[0012]
The support 6 has a structure in which the outer peripheral end is connected to the bottom of
the frame 5 via the edge 7 and the other end is integrated with the back of the inner peripheral
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3
end of the diaphragm 3 by adhesion.
A neck 6a bent downward along the outer peripheral side surface of the voice coil body 2 is
provided at the inner peripheral end portion of the support 6, and the neck portion is connected
and fixed to the voice coil body 2 There is.
[0013]
Then, within the dashed line area surrounded by the edges 4 and 7 connected to the frame 5,
there is a connection point of the voice coil body 2, the diaphragm 3 and the support 6 as a
power point for sliding the voice coil body 2. As a result, the diaphragm 3, the support 6, and the
voice coil body 2 can be regarded as one rigid body, so that the rolling of the voice coil body 2
can be suppressed and the harmonic component generated in the diaphragm 3 is attenuated.
There is.
[0014]
In addition, as shown in FIG. 2 so that this speaker can be attached to a narrow area such as
provided on the side of the monitor screen, the outer peripheral shape of the speaker is
rectangular, and the vibration is matched to this shape. The outer peripheral shape of the plate 3
is also rectangular, and the outer peripheral shape of the support 6 provided to reduce harmonic
distortion of the diaphragm 3 also corresponds to the shape of the diaphragm 3 as shown in FIG.
It has a rectangular shape.
[0015]
In the rectangular support 6, straight portions and straight portions in the portion where the
edge 7 provided on the outer peripheral portion intersects with the adjacent sides, in other
words, the outer peripheral portion of the support 6 forming the rectangular shape. The slit 10 is
provided at the connection portion of the above, and harmonic distortion of the speaker is
suppressed with higher accuracy.
[0016]
That is, by making the shape of the support 6 rectangular as described above, the edge 7 formed
on the outer peripheral portion also inevitably becomes rectangular.
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4
Then, in such a rectangular edge 7, the bending strength of the connecting portion where the
straight portion and the straight portion are in contact becomes larger than that of the other
portion, which causes the outer peripheral portion of the diaphragm 3 shown in FIG. It has been
difficult to maintain the symmetry with the provided edge 4, but by providing the slits 10 in this
portion, the size and the length are appropriately adjusted to provide the support 6. As the
bending strength of the edge 7 can be appropriately adjusted, as a result, the symmetry with the
edge 4 provided on the diaphragm 3 can be ensured with high accuracy, and if it is strong,
harmonic distortion of the speaker can be suppressed with high accuracy. It is
[0017]
Further, by providing the slits 10 between adjacent linear portions in this manner, the
independence in each linear portion is enhanced, and the roll direction in each linear portion,
that is, the edge 4 provided on the diaphragm 3 in FIG. When it is defined as a curved up-roll and
the edge 7 provided on the support 6 is defined as a downwardly-rolled down roll, the linear part
in the longitudinal direction in FIG. The bending strength of the edge 7 provided on the support
6 can be adjusted more finely by making the roll directions of the edges 7 in the adjacent linear
portions different from each other as in a roll.
[0018]
In addition, when providing the slit 10 in the edge 7 provided in the support body 6, as shown in
FIG. 4, all overlapping regions in the connection part of a linear part and a linear part are cut off,
and this cutout part is regarded as the slit 10. It is also possible.
[0019]
Further, as described above, as the outer peripheral shape of the speaker provided in the narrow
region, a track-like one may be mentioned in addition to the rectangular shape described above.
In this case, the shape of the support 6 is shown in FIG. Thus, by forming the outer peripheral
shape into a track shape corresponding to the shape of the diaphragm 3, the edge 7 provided on
the outer peripheral portion is a semicircular corner portion connecting two parallel straight
portions and both ends thereof It will be formed by
[0020]
Also in the case where the slit 7 for suppressing the harmonic distortion of the speaker as
described above is provided at the edge 7 of the support 6 as described above, the adjacent
straight portions described in the rectangular support 6 above are provided. Similar to the case
of providing in the connecting portion of the above, by providing the slit 10 in the connecting
portion of the corner portion and the straight portion, the same function and effect can be
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5
obtained.
[0021]
Further, in such a corner portion, since the bending strength of the corner portion is larger than
that of the straight portion, it is sufficient to provide the slit 10 only at the connection portion
between the corner portion and the straight portion described above. It is desirable to provide a
slit 11 separately from the two end portions at this corner portion, because adjustment of the
above is difficult.
[0022]
And, in the slits 10 and 11 provided in the middle of the corner in this manner, the slits 10 and
11 are formed in the direction radially extending from the curvature center 12 of the corner as
shown in the figure, The bending strength can be finely adjusted, and harmonic distortion of the
speaker can be suppressed with high accuracy.
[0023]
In each of the above-described embodiments, the support 6 is described as being connected to
the diaphragm 3 and the voice coil 2, but the support 6 is connected to the diaphragm 3
although not shown. Even if it is not connected to the voice coil body 2, the same effect can be
obtained.
[0024]
Also, although not particularly shown, in an audio system, a mobile phone, or a structure such as
a car, a ship, a house or the like, a sound device is attached to a main body forming this structure,
and the sound device is an audio signal. In the case where the generation unit and the speaker
for converting the sound signal generated by the generation unit are acoustically converted,
harmonic distortion is reduced to a higher level by using the speaker as described above, and the
acoustic characteristic of the structure is improved. As a result, the added value of the structure
can be improved.
[0025]
INDUSTRIAL APPLICABILITY The present invention is capable of reducing further harmonic
distortion in a speaker having a rectangular outer shape or a track shape and a structure using
the same, and is particularly useful for a speaker provided in a narrow area.
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[0026]
The sectional view of the speaker in one embodiment of the present invention The top view of
the speaker The top view of the support which constitutes the speaker The top view of the other
support which constitutes the speaker The upper surface of the other support which constitutes
the speaker Figure
Explanation of sign
[0027]
Reference Signs List 1 magnetic circuit 2 voice coil body 3 diaphragm 4 (first) edge 5 frame 6
support 7 (second) edge 8 magnetic gap 10, 11 slit 12 curvature center
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