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JP2016096455

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DESCRIPTION JP2016096455
Abstract: The present invention provides a speaker component and a speaker which can be made
thin when not in use, have an easy configuration for storage and transportation, and can realize
excellent acoustic characteristics when in use. A speaker component 10 includes an elastic
diaphragm 1 and a support member 2A for supporting the diaphragm 1. The support member 2A
is a sheet-like member that is deformed into a three-dimensional shape. When the member 2A is
deformed into a three-dimensional shape, the diaphragm 1 forms a joint portion 13 in which one
side portions of the two vibration surfaces 11 are joined together, and the other side portion of
the two vibration surfaces 11 Are respectively connected to the support member 2A, and each of
the vibrating surfaces 11 is curved from one side to the other side to form a valley 12 toward the
joint 13, and the support 2A is a joint An opening 24 is formed so as not to be in contact with 13.
[Selected figure] Figure 2
Speaker component and speaker
[0001]
The present invention relates to a foldable loudspeaker component and loudspeaker.
[0002]
Some of the various speakers that play sound are foldable to facilitate storage and transport.
For example, Patent Document 1 discloses a balloon audio device in which a balloon is
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detachably joined to the upper surface of a box housing an audio signal / vibration conversion
device. This balloon audio device is, in use, inflated with air or the like, placed on the upper
surface of a box made of paper or the like, and converted from any audio signal output from the
audio signal / vibration conversion device. The vibration is made to resonate with the balloon
and can be output as sound that resonates around. On the other hand, at the time of product
packing or when not in use, all the members including the balloons can be accommodated in the
box, and the convenience of the packing and storage is provided.
[0003]
Further, in Patent Document 2, an advertising tool with a speaker provided with a supporting
member for detachably holding an audio output unit (box-shaped speaker) on the back surface of
a display unit for displaying an advertisement (information providing tool Is disclosed. This
support member has a box-like support portion for housing the audio output portion, and a leg
portion for erecting the advertising device with a speaker itself, and the support portion and the
leg portion are formed by a single sheet-like member It is formed.
[0004]
Utility model registration 3185838 utility model registration 3089213
[0005]
However, since the balloon audio device disclosed in Patent Document 1 uses a balloon as a
vibrating body, the stability of the shape of the vibrating body itself at the time of use is poor,
and stable acoustic characteristics (directional characteristics, frequency characteristics,
reproduced sound pressure) It is difficult to obtain characteristics etc.).
In addition, the material of the vibrator is specialized to a rubber type, and is poor in durability
and stability, so it is unsuitable for repeated use for a long time. Moreover, although it is possible
to fold a leg thinly when not using it, the advertising device with a speaker disclosed by patent
document 2 has the box-shaped support part which accommodates an audio | voice output part,
and the audio | voice which has a speaker inside The output section can not be folded either
thinly. In addition, technical characteristics for thinning the speakers housed inside are not
disclosed. For this reason, in order to thin the thickness of the support when not in use, it is
necessary to provide a thin audio output unit or the speaker itself, but in the advertising device
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with a speaker disclosed in Patent Document 2, it is used Sometimes it is difficult to maintain
good acoustical properties.
[0006]
The present invention has been made in view of such circumstances, and can be made thinner
when not in use, and has a configuration that facilitates storage and transportation, and also
achieves excellent acoustic characteristics when in use. It is an object of the present invention to
provide a speaker component and a speaker capable of
[0007]
The speaker constituent member of the present invention includes a diaphragm having elasticity
and a support member for supporting the diaphragm, the support member is a sheet-like
member which is deformed into a three-dimensional shape, and the three-dimensional shape of
the support member The diaphragm forms a joint where one side of two vibrating surfaces is
joined together, and the other side of the two vibrating surfaces is connected to the support
member. And each of the vibration planes is curved from the one side to the other side to form a
valley toward the joint.
[0008]
The speaker constituent member is configured by combining a diaphragm formed of a sheet-like
member and a support member, and by assembling the support member into a three-dimensional
shape, the diaphragm having elasticity is curved to form two diaphragms. A curved oscillating
surface can be formed.
Then, in this state, sound can be produced by vibrating the diaphragm along the depth direction
of the valley, and it can be functioned as a speaker in a state where the curved vibrating surface
is formed in this way, It is possible to realize excellent acoustic characteristics.
In addition, while making a support member into a planar shape, by also making a diaphragm
into a planar shape, the whole speaker structure member can be provided thinly. Thus, the
diaphragm of the speaker component according to the present invention does not always
maintain the shape of a curved vibrating surface for reproducing sound, but forms a curved
vibrating surface at the time of use and has wide directivity characteristics. It can be assembled
as a speaker system. For this reason, when not using it, the vibration member can be provided
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flat by providing the support member with a flat shape, and the entire speaker component can be
thinly provided flat, thereby improving the accommodation space efficiency. And freedom of
storage space can be expanded.
[0009]
The speaker according to the present invention is characterized by including the speaker
component and a driving member for driving the joint portion of the diaphragm.
[0010]
According to the present invention, it is possible to form a curved vibrating surface at the time of
use to make it function as a speaker system and maintain excellent acoustic characteristics, and
to facilitate storage and transport by providing a thin diaphragm when not in use. Can be done.
[0011]
It is a perspective view which shows the speaker structural member of 1st Embodiment of this
invention, and shows the state which made the support member three-dimensional shape.
It is a cross-sectional view of the speaker structural member shown in FIG.
It is an exploded view which shows each member which comprises the speaker structural
member of FIG. It is a figure which shows the state made into the planar shape the speaker
structural member shown in FIG. 1, (a) is a top view, (b) is sectional drawing in alignment with
the AA of (a). It is a figure which shows the speaker using a speaker structural member, (a) is a
cross-sectional view, (b) is B arrow line view shown to (a). It is a cross-sectional view which
shows the speaker of 2nd Embodiment of this invention. It is a perspective view which shows the
speaker structural member of 3rd Embodiment of this invention, and shows the state which
made the support member three-dimensional shape. It is a cross-sectional view of the speaker
structure member shown in FIG. It is a figure which shows the state which made the speaker
structural member of FIG. 7 planar shape, (a) is a top view, (b) is sectional drawing in alignment
with the CC line of (a).
[0012]
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BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a speaker
component of the present invention and a speaker using the speaker component will be
described with reference to the drawings. 1 to 4 show a speaker component 10A according to a
first embodiment of the present invention. Moreover, FIG. 5 shows a speaker 100 using this
speaker component 10A. The speaker constituting member 10A of this embodiment includes a
diaphragm 1 which has elasticity and can be bent in one direction, and a support member 2A
which supports the diaphragm 1, and the speaker 100 A speaker component 10A and an
actuator (drive member) 3 for driving the diaphragm 1 are provided.
[0013]
The diaphragm 1 is formed of a flexible material, and has, for example, a configuration in which a
bonding portion 13 is formed by joining one side portions of two (pair) vibrating surfaces 11
provided in a rectangular shape. It is assumed. And the other side part of these oscillating faces
11 is connected to support member 2A, respectively, as shown in FIG. Further, as shown in FIGS.
1 and 2, when each of the vibration surfaces 11 of the diaphragm 1 is deformed into a threedimensional shape, as shown in FIGS. The ridges 12 are curved (in the y direction) to form valleys
12 toward the joint 13.
[0014]
In the diaphragm 1, the extending direction of the valley portion 12 formed when the two curved
vibrating surfaces 11 are formed is a direction perpendicular to both the longitudinal direction
and the depth direction of the valley portion 12 and the extending direction. Is the horizontal
direction. Further, in the following description of the present invention, as shown in FIG. 1, the
depth direction of the valley 12 of the diaphragm 1 is the z direction, the extension direction of
the valley 12 is the x direction (longitudinal direction), and the valley 12 The directions
orthogonal to both the depth direction (z direction) and the stretching direction (x direction) are
referred to as y direction (lateral direction), and these xyz directions are appropriately used.
[0015]
The vibrating surface 11 is curved in one direction (circumferential direction of the curved
vibrating surface: lateral direction: y direction) as shown in FIGS. 1 and 2 when the vibrating
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surface 11 is formed in a curved surface. In the direction orthogonal to the one direction
(longitudinal direction of the curved vibration surface: x direction), it becomes linear. Then, the
two vibrating surfaces 11 are arranged in parallel with their convex directions directed to the
same surface side, and the adjacent side portions make tangential directions in a cross section
along the circumferential direction of the curved vibrating surface 11. It is joined in the state
made common. The bonding portion 13 of the both vibration surfaces 11 is formed, for example,
in a band plate shape by bonding the side portions of the both vibration surfaces 11 or the like.
Then, along the joint portion 13, a linear valley portion 12 extending in the longitudinal direction
is formed between the vibration surfaces 11.
[0016]
The actuator 3 is connected to the joint 13 and vibrated along the depth direction (z direction) of
the valley 12 so that sound can be produced, and the curved vibrating surface 11 is formed. In
the state, it can function as a speaker. In addition, the joint portion 13 is formed in a band plate
shape to have high rigidity, and when the actuator 3 is connected to the joint portion 13, the
entire joint portion 13 is reciprocally vibrated by the actuator 3.
[0017]
Further, in order to obtain a uniform reproduction sound, it is preferable to form both vibration
planes 11 in line symmetry with respect to a common tangent L of the joint portion 13 as shown
in FIG. However, in the present invention, the two vibration planes 11 may not necessarily be
formed in line symmetry. In order to obtain a non-uniform reproduction sound by inclining the
main axis of the directivity characteristic in the left and right direction, both vibration surfaces
11 may be formed in an asymmetrical shape so as to obtain a predetermined directivity
characteristic. The material of the diaphragm 1 is not limited, and a flexible material such as
synthetic resin generally used as a diaphragm of a speaker or paper can be used. For example,
polyethylene, polyester, etc. Etc. It is formed by the film which consists of synthetic resins.
[0018]
The support member 2A is formed of a sheet-like member formed of paper, a hard resin film or
the like. The support member 2A can be deformed into a three-dimensional shape (for example, a
box shape with a bottomed rectangular cylinder shown in FIG. 1) and a planar shape shown in
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FIG. 4 by folding or bending. In this case, the support member 2A is formed in a threedimensional shape when using the speaker constituting member 10A, and formed in a planar
shape when carrying or storing without using the speaker constituting member 10A. is there.
Further, the support member 2A formed in a three-dimensional shape constitutes a casing of the
speaker. Accordingly, the support member 2A is made of a material, a shape, and a structure
having a rigidity higher than that of the diaphragm 1. The support member 2A is originally made
up of two assembly members 21L and 21R having a common expanded shape as a material as
shown in FIG. 3, and these assembly members 21L and 21R are bent and assembled as shown in
FIG. And as shown in FIG. 2, the three-dimensional shaped supporting member 2A is formed.
[0019]
Each of the assembly members 21L and 21R has respective surfaces S1 to S6 forming a box
shape by a bending line G (a line which is folded toward the inside of the casing) as indicated by
the alternate long and short dash lines in FIGS. It is sectioned. In the example shown in FIG. 4, the
assembly member 21R has a shape in which three surfaces S1, S2 and S3 are connected, and the
assembly member 21L has a shape in which three surfaces S4, S5 and S6 are connected. .
Moreover, the insertion piece 22 and the slit 23 for connecting a mutual edge, when assembling
to box shape are provided in a part of edge (side) of each surface S1-S6. Thereby, when the
bending line G of the assembly members 21L and 21R is valley-folded and each surface S1 to S6
is bent at a right angle, the insertion piece 22 and the slit 23 face each other, and the insertion
piece 22 is inserted into the slit 23 By doing so, the sides of each surface are connected to form a
box shape. When the support member 2A is deformed into a box shape, the surfaces S2 and S5
are the left and right side plates of the diaphragm 1, the surface S1 is the top plate, the surface
S4 is the bottom plate, and the surfaces S3 and S6 are the back plate. , Each (see Figure 1).
Further, as shown in FIG. 5B, a slit-like opening 24 is formed along the extending direction (x
direction) of the valley 12 between the surfaces S3 and S6 constituting the back plate. . The
opening 24 is opened so as not to contact with the bonding portion 13 of the diaphragm 1, and
the tip of the bonding portion 13 is inserted into the opening 24, that is, the bonding portion 13
and the actuator 3 via the opening 24. Is connected.
[0020]
The assembling members 21L and 21R constituting the speaker constituting member 10A and
the diaphragm 1 are connected as shown in FIG. 4 and integrally provided, and separately as
shown in FIG. 3 and separately provided. Can. In the speaker constituting member 10A of the
present embodiment, the diaphragm 1 and the supporting member 2A are connected in advance
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and integrally provided, and as shown in FIGS. 1 and 2, each vibrating surface 11 of the vibrating
body 1 is As the support member 2A is deformed into a three-dimensional shape, valleys 12 are
formed between one side portions to be deformed into a curved surface in one direction. Then,
the surfaces S1 and S4 of the support member 2A make it possible to cover the space between
the vibrating surfaces 11 at both ends of the valley portion 12 of the diaphragm 1. On the other
hand, as shown in FIG. 4, by making the support member 2A into a planar shape, the vibrating
surfaces 11 are superimposed on each other, and the diaphragm 1 is deformed into a planarly
folded state. The speaker component of the present invention may be installed and used not in a
mode in which the diaphragm 1 is curved in the left and right (y direction) as shown in FIG.
[0021]
The actuator 3 vibrates the joint 13 of the diaphragm 1 and, for example, a voice coil motor is
used. In the present embodiment, as shown in FIG. 5, the actuator 3 supports the voice coil 30
fixed to the joint 13 of the vibrating surface 11, the magnet mechanism 31, and the magnet
mechanism 31 and supports the magnet mechanism 31. It comprises the part 40 and the damper
32 which vibratably supports the voice coil 30 and is connected to the support part 40. The
voice coil 30 is formed by winding the coil 30b around a cylindrical bobbin 30a, and the upper
end and the joint portion of the voice coil 30 are disposed such that the joint portion 13 of the
vibrating surface 11 is disposed in the diameter direction. The lower edge 13 is fixed with an
adhesive or the like. In addition, the connection means of the junction part 13 of the diaphragm
1 and the actuator 3 is not specifically limited, In addition to the aspect fixed with an adhesive
agent, a double-sided tape, etc., a wedge shape and a hole are used using elasticity of material. A
variety of mechanisms utilizing mechanical coupling such as snap fit fitting in shape and a
combination of magnetic material and magnet can be employed. And the outer peripheral part of
the voice coil 30 is supported by the support part 40 via the damper 32, and the voice coil 30
can reciprocate along the axial direction (z direction) of the voice coil 30 with respect to the
support part 40. Provided. In addition, the thing of the material used for a general dynamic
speaker is applicable to the damper 32. FIG.
[0022]
The magnet mechanism 31 includes an annular magnet 33, a ring-shaped outer yoke 34 fixed to
one of the poles of the magnet 33, and an inner yoke 35 fixed to the other of the poles. A
magnetic gap 36 is formed annularly between the outer yoke 34 and the inner yoke 35 by
arranging the tip of the central pole portion 35 a in the outer yoke 34, and a voice coil is formed
in the magnetic gap 36. The end of 30 is placed in the inserted state.
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[0023]
As described above, in the speaker constituting member 10A configured as described above, the
diaphragm 1 and the supporting member 2A, which are each formed of a sheet-like member, are
integrally connected to each other, and the supporting member 2A is By assembling in a box
shape, the vibration surface 11 of the diaphragm 1 can be deformed into a curved surface along
with the deformation of the support member 2A.
Then, in this state, sound can be produced by vibrating the bonding portion 13 of the diaphragm
1 along the depth direction of the valley portion 12 by the actuator 3, and a state in which the
curved vibration surface 11 is formed in this manner Can function as a speaker.
[0024]
Specifically, when a drive current according to an audio signal is supplied to the voice coil 30 of
the actuator 3 fixed to the joint 13 of the diaphragm 1, a change in magnetic flux caused by the
drive current and a magnetic field in the magnetic gap 36 Thus, a driving force corresponding to
the driving current is applied to the voice coil 30, and the voice coil 30 vibrates in a direction
orthogonal to the magnetic field (the axial direction of the voice coil 30, the vertical direction
indicated by the arrow in FIG. 5). Thereby, the diaphragm 1 connected to the voice coil 30
vibrates along the depth direction of the valley portion 12, and the reproduction sound can be
emitted from the surface of the vibration surface 11. Under the present circumstances, since the
vibration surface 11 of the diaphragm 1 is formed in the curved surface, the speaker 100 can
maintain wide directivity.
[0025]
As described above, the diaphragm 1 of the speaker component 10A does not always maintain
the shape of the curved vibrating surface 11 for reproducing sound, but forms the curved
vibrating surface 11 at the time of use to assemble the speaker system It can be done. For this
reason, when not in use, the support member 2A is formed into a flat shape to provide the
vibrating surface 11 in a flat shape, and the entire speaker component 10 is thinly provided in a
flat shape to improve the storage space efficiency. And freedom of storage space can be
expanded. Moreover, when using it, the vibration surface 11 can be formed in a curved surface
by assembling the support member 2A into a three-dimensional shape, and excellent acoustic
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characteristics can be realized.
[0026]
In addition, when the support member 2A has a three-dimensional shape, the speaker constituent
member 10A is configured to cover both ends of the valley portion 12 of the vibrator 1 by the
surfaces S1 and S4 of the support member 2A. Sound waves from both ends to the back surface
side of the vibrating surface 11 can be prevented from falling off. Therefore, sound can be
emitted efficiently from the front of the vibrating surface 11.
[0027]
6 to 9 show another embodiment of the speaker component or the speaker. In these
embodiments, since some of the constituent elements are the same as those in the first
embodiment, the same reference numerals as in the first embodiment denote the same elements
as in the first embodiment and simplify the description.
[0028]
FIG. 6 shows a speaker 200 of the second embodiment. In the speaker 100 of the first
embodiment shown in FIG. 5, the actuator 3 is disposed on the back side of the box-shaped
support member 2A (speaker component 10A). However, the actuator 3 is the speaker shown in
FIG. Like 200, it can also be arranged on the inner surface side of the support member 2B
(speaker component 10B), that is, inside the box-shaped housing. In the configuration in which
the actuator 3 is disposed on the inner surface side of the support member 2B as in the speaker
200 shown in FIG. 6, the opening necessary for connecting the actuator 3 and the bonding
portion 13 of the diaphragm 1 in the speaker 100 You do not need 24. The actuator 3 is fixed to
the support member 2B with an adhesive, a double-sided tape, or the like.
[0029]
7 to 9 show a speaker component 10C according to a third embodiment. In the speaker
component 10A of the first embodiment shown in FIG. 1, the sheet-like support member 2A is
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configured to be deformed into a substantially cubic box shape, but, for example, the speaker
component 10C shown in FIGS. Thus, the sheet-like support member 2C can be configured to be
deformed into a cylindrical three-dimensional shape having a substantially circular cross section.
Thus, the three-dimensional shape of the support member of the present invention is not limited
to the three-dimensional shape of the first and second embodiments described above.
[0030]
In the case of the speaker component 10C shown in FIGS. 7 to 9, the support member 2C is
configured using two assembly members 25L and 25R having a common developed shape as a
material. Further, the assembly members 25L and 25R respectively form a closed-end cylindrical
three-dimensional shape shown in FIG. 7 by a folding line G shown by a dashed dotted line in FIG.
The assembly members 25L and 25R have a shape in which the surfaces S11 to S16 are defined.
In the example shown in FIG. 9, the assembly member 25R has a shape in which three surfaces
S11, S12 and S13 are connected, and the assembly member 25L has a shape in which three
surfaces S14, S15 and S16 are connected. . The diaphragm 1 is connected to the surface S12 of
the assembly member 25R and the surface S15 of the assembly member 25L. Then, the support
member 2C can be formed as shown in FIG. 7 and FIG. 7 by bending the bending lines G of the
assembly members 25L and 25R into valleys and bending the surfaces S11 to S16 at right angles
and connecting the sides of the surfaces with an adhesive or the like. As shown in FIG. 8, it is
formed in a cylindrical three-dimensional shape, and the vibration surface 11 of the diaphragm 1
is provided on a curved surface.
[0031]
When the support member 2C is deformed into a three-dimensional shape, the surface S11 and
the surface S14 constitute the top plate, the surface S13 and the surface S16 constitute the
bottom plate, and the surface S12 and the surface S15 constitute the back plate and the left and
right side plates. . The surface S11, the surface S14, the surface S13, and the surface S16 are
disposed with a slight gap 26 between the surface S11 and the surface S16 so as not to inhibit
the vibration of the diaphragm 1. Alternatively, a member such as a porous material (sponge
material) or the like that does not affect the vibration of the diaphragm 1 may be inserted into
the gap 26 to close the gap 26. In addition, a slit-like opening 27 is formed between the surface
S12 and the surface S15 along the extension direction (x direction) of the valley 12. The opening
27 is opened so as not to contact the bonding portion 13 of the diaphragm 1, and the tip of the
bonding portion 13 is inserted into the opening 27, that is, the bonding portion 13 and the
actuator 3 via the opening 27. Is connected.
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[0032]
As described above, in the speaker constituting member 10C, the diaphragm 1 and the
supporting member 2C formed of sheet-like members are mutually connected and integrally
provided, and by assembling the supporting member 2C into a three-dimensional shape, The
vibrating surface 11 of the diaphragm 1 can be deformed into a curved surface along with the
deformation of the support member 2C. Then, in this state, sound can be produced by vibrating
the bonding portion 13 of the diaphragm 1 along the depth direction of the valley portion 12 by
the actuator 3, and a state in which the curved vibration surface 11 is formed in this manner Can
function as a speaker.
[0033]
In addition, this invention is not limited to the said embodiment, It is possible to add a various
change in the range which does not deviate from the meaning of this invention. For example,
although a boil coil motor is applied as a drive member for reciprocatingly driving a diaphragm,
instead of a boil coil motor, a member for reciprocally driving such as a piezoelectric element or
a magnetostrictive element may be used. Moreover, in the said embodiment, although the
support member was comprised by two assembly members which have a common expansion |
deployment shape, it is not limited to this, For example, forming a support member by a sheetlike member of 1 sheet Is also possible. Furthermore, the three-dimensional shape of the support
member is not limited to a rectangular cylinder with a bottom or a cylindrical shape, and various
shapes such as a hexagonal shape can be adopted. Although the diaphragm of the above
embodiment is described as having the same shape and size in which two vibration surfaces are
paired, it may be different in shape and size from two vibration surfaces.
[0034]
DESCRIPTION OF SYMBOLS 1 ... Diaphragm, 2 ... Support member, 3 ... Actuator (drive member),
10 ... Speaker component member, 11 ... Vibration surface, 12 ... Valley part, 13 ... Junction part,
21L, 21R, 25L, 25R ... Assembly member, 22: Insertion piece, 23: Slit, 24: Opening, 27, 26:
Clearance, 30: Voice coil, 30a: Bobbin, 30b: Coil, 31: Magnet mechanism, 32: Damper, 33:
Magnet, 34: Outer Yoke, 35: inner yoke, 35a: pole portion, 36: magnetic gap, 40: support portion,
100, 200: speaker
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