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DESCRIPTION JP2018121178

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DESCRIPTION JP2018121178
Abstract: To provide a speaker that is less likely to cause unnecessary natural vibration. A place
where a central area of a diaphragm 8 installed in a voice coil 6 aperture is extremely small, for
example, one point is fixed to a main body 11 via a connection part 9. [Selected figure] Figure 1
Point fixed speaker
[0001]
It is an invention of a speaker.
[0002]
Speakers are now required to upgrade their technology.
[0003]
Japanese Patent Laid-Open H5-292596
[0004]
In the field of speakers, better performance is required.
Therefore, in the present application, it is an object to propose a new form of speaker.
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1
[0005]
The following structure is constructed as a point fixed speaker.
Speaker where the central area of the diaphragm (8) installed in the voice coil (6) diameter is
extremely small, for example, one point is fixed to the main body (11) via the connection part (9)
.
[0006]
The voice coil (6) of the present speaker is fixed to the main body (11) by the connection part (9)
so that one point extremely small in connection area near the center of the diaphragm (8) does
not move when the voice coil (6) vibrates. Because of this, the diaphragm (8) utters efficiently by
tawami vibration.
[0007]
The connection parts (9) that realize the point fixation can be selected from a slender rod or a
pointed shape, and the material can be selected appropriately from metal, bamboo, wood, plastic,
hard rubber, etc. By adjusting or adjusting the form, the speaker characteristics can be adjusted.
[0008]
Wood, paper, polyethylene foam, plastic plates, styrene plates, various buffer plates, thin metal
plates, etc. can be selected as the material of the diaphragm (8).
[0009]
If the area to be fixed is large, a portion which does not vibrate at all by the area will be present
at the center of the diaphragm (8), which interferes with the whole vibration of the diaphragm
(8). It is the speaker of this application that made the area as small as possible.
[0010]
Points have no area in mathematical terms.
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However, when the points are actually displayed, the area for the thickness of the part written
with a pencil is the same as the area exists, and even with the point fixing of the present
invention, the area of the adhesive portion necessary to achieve this is present. Do.
[0011]
Part 1 A small point in the area near the center of the diaphragm (8) is fixed so that it does not
move when the diaphragm (8) vibrates, so vibration of the diaphragm (8) is efficiently generated.
it can.
Part 2 The sound of the object in the natural world is the same as the sound of the sound, so it
can be expected to make a natural sound.
Since the diaphragm (8) of the three speakers operates by tumbling vibration, it is not necessary
to maintain the rigidity and maintain the form like the conventional diaphragm that reciprocates
in parallel, and makes the diaphragm mass particularly light There is no need.
Therefore, a material having a large internal loss can be selected, and a speaker that is less likely
to cause unnecessary natural vibration can be realized.
Part 4 Since it operates by vibration, the audible sound comes out from the diaphragm (8) of this
speaker, so there is no need to install this speaker in a closed box or the like.
[0012]
The present invention will be described below in comparison with the prior art. Since the speaker
of Japanese Patent Laid-Open No. H5-292596 is dome-shaped, the diaphragm needs to maintain
its rigidity and maintain its form, and at the same time, it is necessary to reduce the mass of the
diaphragm. Therefore, it is difficult to select a material with a large internal loss. However, since
the speaker of the present invention operates with vibration, it is not necessary to maintain the
rigidity to maintain a special diaphragm shape, and there is no need to reduce the weight of the
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diaphragm, so the internal loss is larger. The material can be selected, and it can be expected to
obtain better speaker performance.
[0013]
The sectional view of the first embodiment, the sectional view of the first embodiment, the
sectional view of the second embodiment, the sectional view of the third embodiment, the
sectional view of the fifth embodiment, the front view of the fifth embodiment, and the like. The
cross sectional view of the sixth embodiment is the cross sectional view of the sixth embodiment,
the cross sectional view of the sixth embodiment is the cross sectional view of the sixth
embodiment, the cross sectional view of the sixth embodiment is the cross sectional view of the
sixth embodiment, the sixth embodiment The sectional view and the three-dimensional view of 7
are the sectional view of the eighth embodiment, the sectional view of the ninth embodiment, the
sectional view of the tenth embodiment, the sectional view of the eleventh embodiment, the
sectional view of the twelfth embodiment, and The cross-sectional view of Example 13 is the
cross-sectional view of Example 14, and the cross-sectional view of Example 15 is
[0014]
Hereinafter, various forms are presented.
[0015]
An embodiment in which the diaphragm (8) is installed in the bore of the bobbin (7) is shown in
FIG. 1 and FIG.
[0016]
An embodiment in which the bobbin (7) is deformed to make the diaphragm (8) smaller is shown
in FIG.
[0017]
An embodiment in which the bobbin (7) is deformed to make the diaphragm (8) larger is shown
in FIG.
In this case, a part of the diaphragm (8) protrudes beyond the voice coil, and all the diaphragms
do not fit within the voice coil aperture, but the bobbin for fixing the diaphragm (8) is a voice
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Such a case is also within the scope of the present application, since the inside of the bore of the
coil (6) is fixed and the place where the point is fixed is within the bore of the voice coil (6).
[0018]
Instead of deforming the bobbin (7) to change the size of the diaphragm (8) as in the second and
third embodiments, it is also possible to replace the portion to be deformed with a part different
from the bobbin (7). is there.
[0019]
The structure which forms the double concentric speaker which installed the external diaphragm
(12) instead of the damper (5) and installed two diaphragms concentrically was shown in FIG.5
and FIG.6.
The diaphragm (8) and the external diaphragm (12) may be integrated, and the form may be flat
as shown in FIG. 5 or curved as shown in FIG.
[0020]
The structure of the double concentric speaker in which the outer diaphragm (12) is enlarged is
shown in FIGS. 7, 8, 9, 10, 11, and 12.
[0021]
A structure using the attachment (20) to connect the bobbin (7), the diaphragm (8) and the
external diaphragm (12) and a three-dimensional view of the attachment (20) are shown in FIG.
As a result, the area of the outer diaphragm (12) can be further increased, and it can be expected
that the outer diaphragm (12) is easily vibrated.
If the attachment (20) is provided with an air hole such as a slit at any time, it can be expected to
improve the operation.
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[0022]
A structure in which an air hole (13) is provided on the lower plate in order to improve the
movement of the diaphragm (8) is shown in FIG.
[0023]
An enlarged view of the connection part (9) is shown in FIG.
The connection part (conical base) (9) may be an adhesive.
[0024]
The structure in which the conical connection part (15) having a pointed end is connected to the
diaphragm (8) is shown in FIG.
[0025]
A structure in which the tip of the pointed conical connection part (15) is pierced through the
diaphragm (8) is shown in FIG.
[0026]
The structure which connected the connection part (16) which formed the thick rod-shaped tip in
conical shape to the diaphragm (8) was shown in FIG.
[0027]
The structure of the toothpick type connection part (17) and the structure in which this is
connected to the diaphragm (8) are shown in FIG.
[0028]
FIG. 20 shows a structure in which the connection part (9) is fixed by a bridge (19) installed
across the diaphragm (8) on the side opposite to the voice coil side.
[0029]
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An embodiment in which two units sharing one magnet (2) are one speaker is shown in FIG.
[0030]
Not only the true center of the diaphragm (8) but also the position of one small point on the
diaphragm (8) to be fixed can adjust the frequency characteristics etc. by shifting the center.
[0031]
Although it is desirable that the smaller one point of the area on the diaphragm (8) to be fixed is
smaller, it may be a line instead of a point, or a plurality of fixed points may be set linearly, the
connection area Can keep the form of the present application small.
[0032]
The adhesive (14) in the figure is not necessary if it can be adhered by other methods, such as
forming the connection part (9) and the diaphragm (8) integrally, and in some cases it may swell
It does not matter, even a small amount.
[0033]
The speaker characteristics can be adjusted by forming the shape of the connection part (9) into
a spring-like shape such as a leaf spring shape or a coil shape.
[0034]
DESCRIPTION OF SYMBOLS 1 lower plate 2 magnet 3 upper plate 4 ring 5 damper 6 voice coil 7
bobbin 8 diaphragm 9 connection part 10 movable part 11 main body 12 outer diaphragm 13
air hole 14 adhesive 15 triangular conical connection part 16 wedge conical connection part 17
toothed connection part 18 frame 19 bridge 20 attachment 21 outer bobbin 22 outer voice coil
23 outer damper 24 outer edge 25 wiring
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