close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP3163717

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP3163717
Abstract: An audio is output from a panel-like panel member. A speaker device includes a
housing, a voice coil, and a magnetic circuit unit. The housing 10 accommodates the voice coil 20
and the magnetic circuit unit 30 therein. The voice coil 20 is obtained by winding a conductive
member 22 around a cylindrical bobbin 21 attached to the inner side surface of the housing 10.
The magnetic circuit unit 30 is a magnetic circuit that generates a magnetic force, and vibrates
the voice coil 20 by the generated magnetic force. The magnetic circuit unit 30 is attached to an
inner side surface of the housing 10 facing the voice coil 20. The magnetic circuit unit 30
includes the magnet 31, the plate 32 and the yoke 33, and the voice coil 20 is positioned such
that the coil portion formed by the conductive member 22 is positioned in the magnetic gap
formed by the plate 32 and the yoke 33. Will be distributed. [Selected figure] Figure 1
Speaker device
[0001]
The present invention relates to a speaker device, and more particularly to a speaker device that
vibrates a panel member having a panel shape.
[0002]
In recent years, various speakers have been developed.
Among them are thin speakers, speakers with improved operating frequency bandwidth and the
12-04-2019
1
like. One of them includes a bending wave panel and an electrodynamic exciter attached to the
bending wave panel for exciting the bending wave panel, the exciter including a magnet assembly
and a voice coil assembly. The exciter is a flexure wave panel loudspeaker mounted to the flexure
wave panel via the voice coil assembly, the flexure wave panel being dish-shaped within the
annular contact of the voice coil There is a loudspeaker that is featured. (See, for example, Patent
Document 1). According to this loudspeaker, the operating frequency bandwidth can be
expanded.
[0003]
Japanese Patent Publication No. 2002-543702 (FIG. 1)
[0004]
The above-mentioned loudspeaker is a technology for expanding the operating frequency
bandwidth of the loudspeaker by making the shape of the flexural wave panel dished in the
annular contact of the voice coil in the flexural wave panel.
Therefore, it is premised that the shape of the voice coil is annular. If the voice coil can be
configured in another shape, the application range of the speaker can be expanded. In addition, it
is convenient if there is a speaker device capable of outputting sound by using various panel-like
panel members as diaphragms only by attaching to various panel-like panel members.
[0005]
Then, this invention aims at providing the speaker apparatus which outputs an audio | voice from
the panel-like panel member only by attaching to a panel-like panel member.
[0006]
The present invention has been made to solve the above-mentioned problems, and a speaker
device according to the present invention is a speaker device which is attached to a substantially
panel-like panel member and vibrates the panel member to output sound. A housing formed of a
nonmagnetic material, a voice coil in which a conductive member is wound around a
substantially cylindrical bobbin attached to the inner side surface of the housing, and the housing
facing the voice coil And a magnetic circuit portion attached to the inner side surface to vibrate
12-04-2019
2
the voice coil by magnetic force.
This brings about the effect | action of outputting an audio | voice from various panel-like panel
members.
[0007]
Further, in the speaker device according to the present invention, the magnetic circuit portion is
attached to a magnet and one end face of the magnet, is formed of a magnetic body, and can be
inserted inside the substantially cylindrical shape of the bobbin. And a yoke attached to the other
end face of the magnet and formed of a magnetic material and shaped to cover the outer side
surface of the bobbin without contacting, and between the yoke and the plate The voice coil is
disposed such that the voice coil is positioned in the formed magnetic gap. This brings about the
effect | action to vibrate a cylindrical-shaped voice coil efficiently.
[0008]
Further, in the speaker device of the present invention, the yoke includes a substantially Ushaped or substantially U-shaped yoke main body, and a projection extending in the direction
from the end of the yoke main body toward the plate. The plate is disposed at a position facing
the protrusion, and the magnetic gap is formed between the plate and the protrusion. This has
the effect of making the distribution of the magnetic field formed in the magnetic gap uniform.
[0009]
Further, in the speaker device according to the present invention, the end of the plate and the
end of the protrusion have a sloped shape obtained by cutting the corners of the end of the plate
and the end of the end of the protrusion. I assume. This has the effect of making the distribution
of the magnetic field formed in the magnetic gap more uniform.
[0010]
12-04-2019
3
Further, in the speaker device according to the present invention, the shape of the bobbin is a
substantially square tube shape. This brings about the effect | action of making the shape of a
voice coil into shapes other than ring shape.
[0011]
ADVANTAGE OF THE INVENTION According to this invention, the outstanding effect that audio |
voice can be output from a panel-shaped panel member can be show | played.
[0012]
It is a figure which shows an example of the speaker apparatus 100 in embodiment of this
invention.
FIG. 2 is a front view of the speaker device 100. It is a figure which shows an example to the
speaker apparatus 200 of another embodiment in this invention. The figure which attached the
speaker apparatus 100 or 200 in embodiment of this invention to the panel-shaped panel
member 300 is shown.
[0013]
Next, embodiments of the present invention will be described in detail with reference to the
drawings.
[0014]
FIG. 1 is a view showing an example of a speaker device 100 according to an embodiment of the
present invention.
Note that FIG. 1 shows an exploded view of the speaker device 100 in order to explain the
configuration of the speaker device 100. By covering the container 12 with a lid 11 described
later and inserting the magnetic circuit unit 30 into the voice coil 20, the speaker device 100
functions.
12-04-2019
4
[0015]
The speaker device 100 is attached to a panel member 300 in the form of a panel and vibrates
the panel member 300 to output sound, and includes a housing 10, a voice coil 20, and a
magnetic circuit unit 30.
[0016]
The panel shape in the panel member 300 in the present invention is a broad concept including
not only a plate shape such as a rectangular parallelepiped shape, but also a plate shape having
an uneven surface and the like.
For example, a signboard, a white board or the like is assumed as the panel member 300, but the
present invention is not limited to this. Further, as a material of the panel member 300, for
example, various materials such as materials used for foam polystyrene, acrylic, corrugated
cardboard, veneer, aluminum, magnesium, etc. are assumed.
[0017]
The housing 10 accommodates the voice coil 20 and the magnetic circuit unit 30 therein, and
can be constituted of, for example, a lid 11 and a container 12. Although the housing 10 is
assumed to be sealed, it is not limited to this, and may not be sealed as it is configured only with
a frame. The magnetic circuit unit 30 is attached to the inner side surface of the lid 11, and the
voice coil 20 is attached to the inner side surface of the bottom surface 13 of the container 12.
Further, the housing 10 is preferably made of a nonmagnetic material because it is preferable
that the housing 10 be nonmagnetic.
[0018]
The voice coil 20 is obtained by winding a conductive member 22 around a cylindrical bobbin 21
attached to the inner side surface of the housing 10 (for example, the inner side surface of the
bottom surface 13 of the container 12). The bobbin 21 plays a role of a core for winding the
conductive member 22. The shape of the bobbin 21 may be, for example, a rectangular tube
shape of rectangular shape, a square tube shape of square shape, or another square tube shape,
but is not limited to this and may be another tube shape. Further, in the present invention, the
12-04-2019
5
cylindrical shape of the bobbin 21 is not limited to a shape in which both bottom surfaces are
open and side surfaces are formed, and one bottom surface is not open and the other bottom
surface is open It also includes shapes that consist of the bottom. In this case, the one bottom
surface may have any shape.
[0019]
The conductive member 22 needs to be wound around the bobbin 21 at least once. Thereby, the
conductive member 22 plays a role of a coil. The portion where the conductive member 22 is
wound around the bobbin 21 is hereinafter referred to as a coil portion. Further, as the
conductive member 22, for example, a wire such as a copper wire is assumed.
[0020]
The magnetic circuit unit 30 is a magnetic circuit that generates a magnetic force, and vibrates
the voice coil 20 by the generated magnetic force, and the inner surface of the case 10 facing the
voice coil 20 (for example, the inner surface of the lid 11) Attached to). As shown in FIG. 2, the
magnetic circuit unit 30 includes a magnet 31, a plate 32, and a yoke 33.
[0021]
The magnet 31 is assumed to be, for example, a permanent magnet, but is not limited thereto. It
is assumed that the plate 32 is attached to one end face 31 a of the magnet 31. Moreover,
although it is assumed that the plate 32 is formed in a rectangular solid shape by a magnetic
body, it is not limited to this, and may be other shape.
[0022]
It is assumed that the yoke 33 is attached to the other end face 31 b of the magnet 31. In
addition, it is assumed that the yoke 33 is formed of a magnetic material in a shape that covers
the outer side surface of the bobbin 21 without contacting. The specific shape of the yoke 33 is
assumed to be, for example, U-shaped, but is not limited thereto, and may be another shape such
as U-shaped. When the yoke 33 is formed of a magnetic material in a U-shape, the magnet 31 is
12-04-2019
6
attached to the inner side surface of the yoke member 33 a that constitutes a part of the yoke 33.
Further, the entire magnetic circuit portion 30 including the yoke 33 is fixed to the lid 11 by
sticking the outer surface of the yoke member 33 a to the inner surface of the lid 11.
[0023]
The plate 32 and the yoke 33 are arranged to form a magnetic gap between the plate 32 and the
end of the yoke 33, which will be described in FIG.
[0024]
FIG. 2 is a front view of the speaker device 100. FIG.
When the container 12 is covered with the lid 11 and the magnetic circuit unit 30 is inserted into
the voice coil 20, the positional relationship between the voice coil 20 and the magnetic circuit
unit 30 is as shown in FIG.
[0025]
The magnetic circuit unit 30 includes the magnet 31, the plate 32, and the yoke 33 as described
in FIG. The magnet 31 has an N pole and an S pole positioned in the vertical direction, and is
attached to the inner side surface of the yoke member 33 a of the U-shaped yoke 33. The magnet
31 is disposed so as not to contact the yoke members 33 b and 33 c in the yoke 33.
[0026]
The plate 32 has a rectangular parallelepiped shape in FIG. 2 and is attached to the lower end of
the magnet 31. At this time, the plate 32 is disposed, for example, to have the same height as the
end of the yoke member 33 b and the end of the yoke member 33 c. The gaps between the plate
32 and the end of the yoke member 33b and the end of the yoke member 33c become magnetic
gaps 34b and 34c, respectively.
[0027]
12-04-2019
7
When the magnetic circuit unit 30 is configured as described above, the yoke 33 is magnetized
to the N pole (or S pole), and the plate 32 is magnetized to the S pole (or N pole). Thereby, a
magnetic field is formed in the magnetic gaps 34b and 34c.
[0028]
The bobbin 21 of the voice coil 20 is sized and shaped such that the coil portions 23b and 23c of
the voice coil 20 do not contact the plate 32 and the yoke members 33b and 33c. The coil
portions 23b and 23c of the voice coil 20 are preferably located approximately at the center of
the magnetic gaps 34b and 34c. Thereby, the coil portions 23b and 23c in the voice coil 20 are
positioned in the magnetic field formed in the magnetic gaps 34b and 34c, respectively.
[0029]
Since voice signal current flows to the coil parts 23b and 23c when, for example, voice signal
current is supplied to the conductive members 22b and 22c, the voice coil 20 cooperates with
the magnetic field formed in the magnetic gaps 34b and 34c, It will vibrate in the arrow A
direction. This vibration is transmitted to the panel-like panel member 300 attached to the
bottom surface 13 of the container 12. The panel member 300 to which the vibration is
transmitted acts as a diaphragm, and as a result, a sound is output.
[0030]
FIG. 3 is a view showing an example of a speaker device 200 according to another embodiment
of the present invention. In addition, about the thing which has the function similar to the
speaker apparatus 100 in the speaker apparatus 200, suppose that the same name is used.
Further, since the speaker device 200 using the same name as the speaker device 100 has been
described in the speaker device 100, in the following, differences between the speaker device
100 and the speaker device 200 will be mainly described. To be.
[0031]
12-04-2019
8
FIG. 3 (a) is a front view of a speaker device 200 according to another embodiment of the present
invention. The speaker device 200 includes a housing 210, a voice coil 220, and a magnetic
circuit unit 230, and has substantially the same configuration as the speaker device 100. The
difference between the speaker device 200 and the speaker device 100 is the shape of the yoke
in the magnetic circuit unit.
[0032]
That is, as shown in FIG. 3A, the yoke 233 in the speaker device 200 has a configuration in
which protrusions 233b and 233c are provided at the end of the U-shaped yoke main body 233a.
The protrusions 233 b and 233 c extend in the direction toward the plate 232. When the
protrusions 233b and 233c are provided at the end of the yoke body 233a, the distribution of
magnetic lines of force in the magnetic field formed in the magnetic gaps 234b and 234c
becomes uniform.
[0033]
Further, both corners may be cut at the end portions of the protrusions 233b and 233c, and
sloped portions 233d, 233e, 233f, and 233g as shown in FIG. 3A may be provided. When sloped
portions 233d, 233e, 233f and 233g are provided at the ends of the protrusions 233b and 233c,
both corners of the end of the plate 232 are similarly cut in the plate 232 as shown in FIG. 3A. It
is assumed that the inclined surface portions 232 d, 232 e, 232 f and 232 g are provided.
[0034]
In the case of the speaker device 200, the gaps between the end of the protrusions 233b and
233c and the end of the plate 232 become magnetic gaps 234b and 234c, respectively. Then, a
magnetic field is formed in the magnetic gaps 234 b and 234 c. When sloped surface portions
232d, 232e, 232f, 232g, 233d, 233e, 233f and 233g are provided, the distribution of magnetic
lines of force in the magnetic field formed in the magnetic gaps 234b and 234c becomes more
uniform as described below.
[0035]
12-04-2019
9
FIG.3 (b) is an enlarged view of the elliptical area | region B in FIG. 3 (a). When the yoke and the
plate are made to be the speaker device 200, the distribution of magnetic lines of force in the
magnetic field formed in the magnetic gap 234b becomes uniform as shown in FIG. 3 (b).
Thereby, when the voice signal current is supplied to the voice coil 220, the voice coil 220 can
realize the vibration corresponding to the voice signal current with high accuracy. The length of
the coil portions 223b and 223c in FIG. 3B is further shortened in the longitudinal direction, and
the shortened coil portions 223b and 223c are portions where the distribution of magnetic lines
of force in FIG. 3B is uniform (figure 3 (b) may be located in a region occupied by magnetic lines
of force extending from between the sloped portions 223d and 223e. As a result, the magnetic
field in the region where the coil portions 223b and 223c are located becomes more uniform, so
that the voice coil 220 can realize the vibration corresponding to the audio signal current with
high accuracy. This idea is also applicable to the coil portions 23b and 23c in FIG.
[0036]
FIG. 3C is an enlarged view of a portion of the speaker device 100 corresponding to FIG. The
speaker device 100 has nothing corresponding to the protrusions 233 b and 233 c. In this case,
the distribution of magnetic lines of force in the magnetic field formed in the magnetic gap 34b
does not become uniform as shown in FIG. 3 (c). In this case, when the voice signal current is
supplied to the voice coil 20, it is presumed that it is difficult for the voice coil 20 to realize the
vibration corresponding to the voice signal current as much as the voice coil 220.
[0037]
As described above, the speaker device 200 can more accurately convert an audio signal into a
sound than the speaker device 100 can.
[0038]
FIG. 4 shows a view in which the speaker device 100 or 200 according to the embodiment of the
present invention is attached to a panel member 300 in the form of a panel.
A plurality of speaker devices 100 or 200 may be attached to the panel member 300.
12-04-2019
10
[0039]
FIG. 4A is a diagram in which the speaker devices 100 or 200 are regularly arranged in 2 rows
and 4 columns and attached to the panel member 300. FIG. 4B is a diagram in which the adjacent
speaker devices 100 or 200 are attached to the panel member 300 while being shifted in the
longitudinal direction. The attachment method to the panel member 300 of the speaker
apparatus 100 or 200 in the above FIG. 4 (a) and FIG.4 (b) is an example, and you may attach it
how.
[0040]
As described above, according to the speaker devices 100 and 200 of the embodiment of the
present invention, since panel members such as a signboard and a white board can be vibrated as
a diaphragm, sound can be output from various members. . Furthermore, if the configuration of
the magnetic circuit unit is configured as the speaker device 200, an audio signal can be
converted to audio with higher accuracy.
[0041]
The embodiment of the present invention is an example for embodying the present invention,
and the present invention is not limited to this, and various modifications can be made without
departing from the scope of the present invention. .
[0042]
As an application example of the present invention, the present invention can be applied, for
example, when sound is output from a panel member such as a signboard or a white board.
[0043]
DESCRIPTION OF SYMBOLS 10 210 housing 11 lid 12 container 20 220 voice coil 21 bobbin 22
conductive member 23 b 23 c 223 b 223 c coil part 30 230 magnetic circuit part 31 magnet 32
232 plate 33 233 yoke 33 a 33 b 33 c Yoke members 34b, 34c, 234b, 234c Magnetic gaps 100,
200 Speaker devices 232d, 232e, 232f, 232g, 233d, 233e, 233f, 233g Slope-shaped portions
233a Yoke main portions 233b, 233c Protrusions 300 Panel members
12-04-2019
11
Документ
Категория
Без категории
Просмотров
0
Размер файла
20 Кб
Теги
description, jp3163717
1/--страниц
Пожаловаться на содержимое документа