JP2016082563

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 JP2016082563
Abstract: To provide a speaker device which can be further miniaturized and is excellent in sound
reproducibility and installation stability. SOLUTION: A speaker unit 2 for converting an electric
signal into vibration to emit sound, an enclosure 3 covering the back side of the speaker unit 2,
and a main body 4 for holding the enclosure 3 are provided. The open end 3a is joined to each
other in a state in which the inner case 12 is accommodated inside the outer case 11, and the
outer case is provided. 11 has the vacuum double structure in which the vacuum layer 13 is
provided between the inner casing 12 and the inner casing 12, and the main body 4 has the
enclosure 3 in a state where at least a part 3 c of the outer casing 11 is exposed to the outside.
keeping. [Selected figure] Figure 9
Speaker device
[0001]
The present invention relates to a speaker device.
[0002]
In general, the speaker device includes a speaker unit that converts an electrical signal into
vibration to emit sound, and an enclosure that covers the back side of the speaker unit.
In the speaker device, since the vibration of the sound emitted from the front side of the speaker
unit and the vibration of the sound emitted from the back side of the speaker unit are in opposite
01-05-2019
1
phase, when these vibrations interfere with each other, the sound is mutually canceled. It will
cancel each other. This is so remarkable that it is in the lower range. Therefore, in the speaker
device, by covering the rear side of the speaker unit with an enclosure, it is performed to block
the sound emitted from the rear side of the speaker unit.
[0003]
However, in the speaker device, the enclosure vibrates (in some cases, resonates) by the sound
emitted from the back side of the speaker unit into the enclosure, and unnecessary vibration is
propagated from the enclosure to the outside. In order to suppress vibration propagating to the
outside through the enclosure, it is necessary to increase the thickness of the enclosure or to
increase the rigidity of the enclosure. In this case, the weight of the enclosure will be significantly
increased.
[0004]
Then, the speaker apparatus which suppressed the vibration propagated to the exterior by the
enclosure which has a vacuum double structure is proposed (refer patent document 1, 2).
Specifically, an enclosure having a vacuum double structure has a bottomed cylindrical outer
housing and an inner housing open at one end, and the openings are open with the inner housing
housed inside the outer housing. The ends are joined, and a high vacuum reduced vacuum layer
is provided between the outer housing and the inner housing. The speaker unit is attached so as
to close the open end of the enclosure with its back side facing the inside of the enclosure.
[0005]
According to such a speaker device, even if the inner casing of the enclosure vibrates due to the
sound emitted from the back side of the speaker unit, the vacuum layer prevents the propagation
of the vibration from the inner casing to the outer casing . Thereby, the vibration propagated to
the outside through the enclosure can be suppressed. Furthermore, it is also possible to reduce
the weight of the enclosure.
[0006]
Japanese Patent Application Laid-Open No. 63-15691 Japanese Patent Laid-Open No. 2003-
01-05-2019
2
92791
[0007]
By the way, in the speaker apparatus mentioned above, the whole apparatus might enlarge by the
cover (main-body part) which hold ¦ maintains integrally the enclosure to which the speaker unit
was attached.
[0008]
Further, in the above-described speaker device, by attaching the speaker unit to the enclosure,
the vibration from the speaker unit is directly transmitted to the enclosure, so that not only the
sound reproducibility deteriorates but also the installation when installed on the installation
surface The stability sometimes got worse.
[0009]
Furthermore, in the above-described speaker device, the vibration from the speaker unit may be
transmitted directly to the cover.
Therefore, also in this case, not only the sound reproducibility but also the installation stability is
deteriorated.
[0010]
The present invention has been proposed in view of such conventional circumstances, and it is
possible to provide a speaker device which can be further reduced in size and weight and
excellent in sound reproducibility and installation stability. To aim.
[0011]
In order to achieve the above object, the present invention provides the following means.
[1] A speaker unit that converts an electrical signal into vibration to emit sound, an enclosure
that covers the back side of the speaker unit, and a main body that holds the enclosure, the
01-05-2019
3
enclosure has a bottom open at one end It has a cylindrical outer housing and an inner housing,
and in the state where the inner housing is accommodated inside the outer housing, the open
ends of each other are joined, and the outer housing and the inner housing And the body portion
holds the enclosure in a state in which at least a part of the outer casing is exposed to the
outside. Speaker device.
[2] The main body portion has an upper cover for holding the front side of the enclosure, and the
upper cover is attached to the enclosure in a non-contact state with the speaker unit. The speaker
device according to the above [1].
[3] The speaker device according to [2], wherein the upper cover is attached in a state of being
fitted to an open end of the enclosure. [4] The speaker device according to the above [2] or [3],
wherein a sound emitting portion for emitting the sound emitted by the speaker unit to the
outside is provided on the front surface of the upper cover. [5] The speaker device according to
any one of [2] to [4], wherein the main body portion has a lower cover that holds the rear side of
the enclosure. [6] The speaker device according to [5], wherein the center of gravity of the main
body is positioned closer to the lower cover than the upper cover. [7] The speaker device
according to [5] or [6], wherein the main body portion has a side cover that connects the upper
cover and the lower cover. [8] The side cover is disposed along the side surface of the enclosure,
and the enclosure is between the upper cover and the lower cover, other than the side surface on
which the side cover of the outer housing is disposed. The speaker device according to [7], which
is held by the main body with the side surface exposed to the outside. [9] At least a control circuit
board is disposed inside the lower cover, and a wire electrically connecting the speaker unit and
the control circuit board is disposed inside the side cover. The speaker device according to [7] or
[8], characterized in that [10] A leg portion rotatably mounted on the main body portion via a
hinge portion, the leg portion supporting the main body portion in a state of being erected with
respect to the installation surface, and the main body portion The speaker device according to
any one of the above [1] to [9], wherein the speaker device is rotatable between a position where
it is supported in a state of being inclined with respect to the installation surface. [11] The leg
portion includes a first anti-vibration member that contacts the installation surface when the
main body portion is erected, and a second anti-vibration member that contacts the installation
surface when the main body portion is inclined The speaker device according to [10], which is
provided with a member. [12] The first vibration isolation member and the second vibration
isolation member are n-gonal (n represents an integer of 3 or more) in the surface of the leg
portion in contact with the installation surface. The speaker device according to the above [11],
which is provided so as to be located at each vertex when forming.
[13] The speaker device according to [12], wherein a center of gravity of the main body portion
01-05-2019
4
supported by the leg portion is positioned inside the n-gon. [14] The first vibration isolation
member and the second vibration isolation member are made of an elastic body integrally
formed with each other, and the elastic body penetrates the hole formed in the leg portion The
speaker device according to any one of [11] to [13], which is provided so as to protrude from one
surface and the other surface of the leg portion. [15] The speaker device according to any one of
[11] to [14], wherein the main body portion is provided with a third vibration-proof member in
contact with the hinge portion. [16] The speaker device according to any one of [7] to [15],
wherein the side cover is provided with a fourth vibration-proof member in contact with the side
surface of the enclosure. . [17] A fifth vibration-proof member is provided at a contact portion
between the wiring and the open end of the enclosure, described in any one of the abovementioned [9] to [16]. Speaker device. [18] The inner case has a stepped portion that protrudes
over the entire circumference from the inner circumferential surface on the open end side, and
the speaker unit is fitted into the inner case from the open end. The speaker according to any one
of the above [1] to [17], wherein the speaker is mounted in a non-contact state with the enclosure
via a seal member in contact with the step portion in a closed state. apparatus. [19] The speaker
device according to [18], wherein the seal member seals the gap between the speaker unit and
the enclosure in a state in which the seal member is in close contact with the stepped portion
over the entire circumference. .
[0012]
As described above, according to the present invention, it is possible to provide a speaker device
which can be further reduced in size and weight and excellent in sound reproduction and
installation stability.
[0013]
It is a speaker apparatus which concerns on one Embodiment of this invention, Comprising: It is a
perspective view which shows the external appearance of the speaker apparatus installed in the
standing-up state.
It is the perspective view which looked at the speaker apparatus installed in the state which
stood up shown in FIG. 1 from lower side. It is a side view of the speaker apparatus installed in
the standing-up state shown in FIG. It is a bottom view of the speaker apparatus installed in the
standing-up state shown in FIG. It is a speaker apparatus which concerns on one Embodiment of
this invention, Comprising: It is a perspective view which shows the external appearance of the
speaker apparatus installed in the inclined state. It is the perspective view which looked at the
speaker apparatus installed in the inclined state shown in FIG. 5 from the downward side. It is a
01-05-2019
5
side view of the speaker apparatus installed in the inclined state shown in FIG. It is a bottom view
of the speaker apparatus installed in the inclined state shown in FIG. It is sectional drawing which
shows the internal structure of the speaker apparatus which concerns on one Embodiment of this
invention. It is a perspective view which shows the principal part of the speaker apparatus which
concerns on one Embodiment of this invention.
[0014]
Hereinafter, embodiments of the present invention will be described in detail with reference to
the drawings. As an embodiment of the present invention, for example, a speaker device 1 shown
in FIGS. 1 to 10 will be described. In addition, FIG. 1 is a perspective view which shows the
external appearance of the speaker apparatus 1 installed in the standing-up state. FIG. 2 is a
perspective view of the speaker device 1 installed in a standing state as viewed from below. FIG.
3 is a side view of the speaker device 1 installed in an upright state. FIG. 4 is a bottom view of the
speaker device 1 installed in an upright state. FIG. 5 is a perspective view showing the
appearance of the speaker device 1 installed in an inclined state. FIG. 6 is a perspective view of
the speaker device 1 installed in an inclined state as viewed from below. FIG. 7 is a side view of
the speaker device 1 installed in an inclined state. FIG. 8 is a bottom view of the speaker device 1
installed in an inclined state. FIG. 9 is a cross-sectional view showing the internal structure of the
speaker device 1. FIG. 10 is a perspective view showing the main part of the speaker device 1.
[0015]
The speaker device 1 is, for example, a portable small-sized speaker device capable of wirelessly
listening to music or the like reproduced on a digital device such as a personal computer or a
smartphone by wireless communication conforming to a short distance wireless standard such as
Bluetooth (registered trademark). is there.
[0016]
Specifically, as shown in FIGS. 1 to 9, the speaker device 1 includes a speaker unit 2 that converts
an electrical signal into vibration and emits sound, an enclosure 3 that covers the back side of the
speaker unit 2, and an enclosure 3. And a leg 6 rotatably attached to the main body 4 via a hinge
5.
[0017]
01-05-2019
6
The speaker unit 2 is not particularly limited as to its configuration as shown in FIG. 9, and a
general speaker unit can be used.
In general, the speaker unit 2 includes a magnetic circuit 7, a voice coil 8 movable in the
magnetic gap of the magnetic circuit 7, a diaphragm 9 attached to the voice coil 8, a magnetic
circuit 7 and a diaphragm 9. An audio signal can be emitted by supplying an electric signal to the
voice coil 8 and vibrating the diaphragm 9 according to the electric signal.
[0018]
The enclosure 3 is made of, for example, stainless steel or the like, and has a bottomed cylindrical
outer housing 11 and an inner housing 12 whose one end is open.
In the enclosure 3, the open ends 3 a of each other are joined in a state in which the inner casing
12 is accommodated inside the outer casing 11, and a vacuum layer 13 is provided between the
outer casing 11 and the inner casing 12. It has a dual vacuum structure. The vacuum layer 13 is,
for example, a degassing hole (not shown) provided at the center of the bottom of the outer
casing 11 in a chamber that has been reduced in pressure (vacuum) to a high vacuum. Can be
formed by plugging.
[0019]
The enclosure 3 has a circular bottom portion 3b, a cylindrical body 3c standing from the outer
periphery of the bottom portion 3b, and a circular opening 3d opened at one end (opening end
3a) of the body 3c. doing. Further, in the inner casing 12, a ring-shaped stepped portion 14 is
provided so as to project over the entire circumference from the inner peripheral surface on the
opening end 3 a side.
[0020]
If the inner case 12 does not weld the body including the opening end 3a and the step portion 14
to the bottom, but the body and the bottom are integrally formed by drawing or the like, welding
defects or welding may occur. Desirable because no marks or the like occur.
01-05-2019
7
[0021]
The speaker unit 2 is attached so as to close the open end 3 a of the enclosure 3 with the back
side thereof facing the inside of the enclosure 3.
Specifically, the speaker unit 2 is attached to the enclosure 3 via the seal member 15 in contact
with the step portion 14 in a state where the speaker unit 2 is fitted to the inside of the inner
housing 12 from the opening end 3a. In addition, the speaker unit 2 is attached via the seal
member 15 in a non-contact state with the enclosure 3. This can prevent unnecessary vibrations
from being transmitted from the speaker unit 2 to the enclosure 3.
[0022]
In the speaker device 1 of the present embodiment, unnecessary vibration (resonance or the like)
in the enclosure 3 (inner casing 12) due to the sound emitted into the enclosure 3 from the back
side of the speaker unit 2. A sound absorbing material such as a sponge may be disposed inside
the enclosure 3 (inner housing 12) to prevent the occurrence of the. Moreover, it is also possible
to affix a member or the like for shifting the resonance point so that resonance due to vibration
does not occur in the outer casing 11 and the inner casing 12 constituting the enclosure 3.
[0023]
The seal member 15 is made of an elastic member such as rubber such as silicone rubber or an
elastomer. The seal member 15 is formed in a ring shape in accordance with the shape of the
step portion 14. Specifically, the seal member 15 includes a first seal portion 15a in contact with
the flat surface portion 14a on the top side of the step portion 14 and a second seal portion 15b
in contact with the inclined surface portion 14b on the entry side of the step portion 14 And.
[0024]
The seal member 15 is attached to the speaker unit 2. Specifically, the speaker unit 2 has a
cylindrical member 16 whose one end is connected to the outer peripheral portion of the frame
10. The other end of the cylindrical member 16 is provided with a plurality of hook pieces 17
01-05-2019
8
which are axially extended and elastically deformable in the diameter reducing direction. The
plurality of hook pieces 17 are provided side by side in the circumferential direction of the
cylindrical member 16. The seal member 15 is attached to the outer peripheral portion of each
hook piece 17 in a bridged state.
[0025]
In the speaker device 1, when the speaker unit 2 is fitted inside the enclosure 3 (inner housing
12), the hooks 17 are elastically deformed, and the claws 17 a provided at the tips of the hooks
17 are stepped. Get over section 14. At this time, the seal member 15 is in a state of being in
close contact with the step portion 14 over the entire circumference while being elastically
deformed. Thus, the seal member 15 can seal between the speaker unit 2 and the enclosure 3.
[0026]
As shown in FIG. 1 to FIG. 9, the main body 4 is provided between the upper cover 4a holding the
front side of the enclosure 3, the lower cover 4b holding the rear side of the enclosure 3, and the
upper cover 4a and the lower cover 4b. And a side cover 4c to be connected. The main body
portion 4 is made of a hollow molded body of a synthetic resin, and has a substantially
cylindrical appearance as a whole along with the enclosure 3. Moreover, the main-body part 4
hold ¦ maintains integrally the enclosure 3 to which the speaker unit 2 was attached by
combining each part divided ¦ segmented into plurality.
[0027]
Specifically, as shown in FIG. 9, the enclosure 3 can be easily assembled to the upper cover 4a by
inserting (fitting) the open end 3a into the groove 4d provided on the inner side of the upper
cover 4a. . The upper cover 4 a is attached to the enclosure 3 in a non-contact state with the
speaker unit 2. As a result, unnecessary vibration can be prevented from being transmitted from
the speaker unit 2 to the upper cover 4a (main body 4).
[0028]
01-05-2019
9
On the other hand, the enclosure 3 has a structure in which the lower end 3e forming the bottom
3b of the outer housing 11 and the body 3c are joined, and the lower end 3e is inserted into the
groove 4e provided inside the lower cover 4b By fitting, it is possible to easily assemble the lower
cover 4b. Therefore, the number of assembly steps when assembling the speaker device 1 can be
reduced. In the grooves 4d and 4e, an adhesive (seal material), not shown, is disposed. Thus, the
upper cover 4a and the lower cover 4b and the enclosure 3 are joined in a sealed state via an
adhesive (sealing material).
[0029]
As shown in FIG. 9, the speaker unit 2 is disposed inside the upper cover 4a without contacting
the upper cover 4a. As shown in FIG. 1, FIG. 5 and FIG. 9, the upper cover 4a is provided with a
sound emitting unit 18 for emitting the sound emitted by the speaker unit 2 to the outside and a
power switch 19 for switching ON / OFF of the power. ing.
[0030]
The sound emitting portion 18 is configured such that the net 20 is attached to an opening 4 f
formed on the front surface of the upper cover 4 a. The power switch 19 is provided facing the
outside from a hole formed on the front surface of the upper cover 4a. Further, a power supply
circuit board (not shown) is provided with a switch section inside the upper cover 4a. ) Is
provided. The power switch 19 has translucency and is disposed on the top of the switch portion.
In the speaker device 1, the switch section is operated by pressing the power switch 19.
Furthermore, an LED light is arranged on the power supply circuit board, and the color of the
LED light is changed when the electric capacity is insufficient, or the LED light is blinked when
paired with Bluetooth (registered trademark). These operating conditions can be displayed
through the translucent power switch 19. Thereby, the visibility and operability at the time of
operation of the speaker device 1 are enhanced.
[0031]
The sound output unit 18 is not necessarily limited to such a configuration. For example, the net
20 may be omitted, and the front surface of the speaker unit 2 may be exposed from the opening
4 f. In addition, the power switch 19 can be disposed at a position different from that of the
upper cover 4a. Note that although the volume adjustment of the speaker unit 2 can be adjusted
01-05-2019
10
wirelessly by the above-described operation on the digital device side, it is also possible to
provide a volume switch for adjusting the volume of the speaker unit 2 on the main body 4 side.
It is.
[0032]
Inside the lower cover 4b, although not shown, a battery, a communication module, a control
circuit board and the like are arranged. The battery is disposed at the lowermost portion of the
lower cover 4 b in consideration of the center of gravity of the speaker device 1. Also, the battery
is removable. The communication module is mounted at a height in consideration of the effect of
metal radio wave interception. As a result, the center of gravity of the main body 4 is positioned
closer to the lower cover 4b than the upper cover 4a.
[0033]
For example, a connection port for charging such as Mini-USB (registered trademark), an AUX
output jack for connecting to another speaker device, an AUX input for connecting to another
digital device, etc. Although a jack or the like is provided, it is not particularly limited thereto.
[0034]
As shown in FIGS. 2 to 4 and 6 to 8, the leg portion 6 is rotatably attached to the bottom surface
of the lower cover 4 b (the main body portion 4) via the hinge portion 5.
The leg portion 6 is formed of a hollow molded body of the same synthetic resin as the main
body portion 2 and has a substantially circular flat plate-like appearance as a whole.
[0035]
The leg portion 6 can support the main body portion 4 in a state of being erected with respect to
the installation surface S, as shown in FIGS. 1 to 4. At this time, the leg 6 reaches a position
where the other surface 6b is opposed to the bottom surface of the main body 4 (lower cover 4b)
with one end in the rotation direction, that is, one surface 6a facing the installation surface S It is
pivoted.
01-05-2019
11
[0036]
On the other hand, as shown in FIGS. 5 to 8, the leg portion 6 can support the main body portion
4 in an inclined state with respect to the installation surface S. At this time, the leg 6 faces the
lower surface of the main body 4 (side cover 4c) with the other end in the rotation direction, that
is, with the other surface 6b facing the installation surface S. It has been turned to the
[0037]
As shown in FIGS. 2 to 4, a first anti-vibration member 21 is provided on one surface 6 a of the
leg portion 6 to be in contact with the installation surface S in a state where the main body
portion 4 is erected. Similarly, as shown in FIGS. 6 to 8, the other surface 6 b of the leg portion 6
is provided with a second anti-vibration member 22 that contacts the installation surface S in a
state where the main body portion 4 is inclined.
[0038]
The first vibration isolation member 21 and the second vibration isolation member 22 absorb the
vibration transmitted from the leg portion 6 to the installation surface S, and are made of, for
example, an elastic body such as rubber or an elastomer. As shown in FIGS. 4 and 8, the first
vibration isolation member 21 and the second vibration isolation member 22 are n-gonal (n is 3
or more) in the surface of the leg 6 in contact with the installation surface S. Represents an
integer. It is provided to be located at each vertex when forming.
[0039]
Specifically, in the present embodiment, the three first vibration-proof members 21 and the
second vibration-proof members 22 are provided so as to be located at each vertex of the
triangle (n = 3). The three first vibration isolation members 21 and the second vibration isolation
members 22 respectively have the vicinity of the hinge 5 as one vertex P1, and the two vertices
P2 and P3 which are symmetrical with respect to this one vertex. Located at each vertex of the
triangle. Further, the center of gravity of the main body portion 6 supported by the leg portion 6
01-05-2019
12
is located inside the n-gon (in this embodiment, a triangle), that is, inside each of the first
vibration isolation member 21 and the second vibration isolation member 22 There is.
[0040]
Thereby, in the speaker device 1, as shown in FIG. 1, FIG. 3, FIG. 4 and FIG. 7, when the main
body portion 4 is installed on the installation surface S in an upright or inclined state, the main
body portion It is possible to support 4 stably. In addition, since the vibration transmitted from
the leg portion 6 to the installation surface S is absorbed by the first vibration isolation member
21 and the second vibration isolation member 22, it is possible to maintain good sound
reproducibility by the speaker unit 2 .
[0041]
The first vibration isolation member 21 and the second vibration isolation member 22 are
formed of an elastic body D integrally formed with each other, as shown in FIG. The elastic body
D is disposed inside the legs 6. The first vibration-proof member 21 is made of a part of the
elastic body D protruding from the one surface 6 a of the leg 6 in a state of penetrating the first
hole 23 a formed in the one surface 6 a of the leg 6 There is. Similarly, in a state where the
second vibration-damping member 22 penetrates the second hole 23b formed in the other
surface 6b of the leg 6, one of the elastic bodies D projecting from the other surface 6b of the leg
6 It is composed of parts. Further, the first hole portion 23 a and the second hole portion 23 b
are provided at mutually overlapping positions in the thickness direction of the leg portion 6.
[0042]
Further, as shown in FIGS. 6-9, when the leg 6 is positioned on one side of the rotation direction
on the bottom of the main body 4 (lower cover 4b), the leg 6 is used as the bottom of the main
body 4 There is provided a stopper mechanism 24 for fixing to the. The stopper mechanism 24
has a fitting convex portion 25 provided on the bottom surface of the lower cover 4 b and a
fitting concave portion 26 provided on the other surface 6 b of the leg portion 6.
[0043]
01-05-2019
13
The fitting convex portion 25 is provided so as to protrude from a position on the opposite side
to the hinge portion 5 with respect to the center portion of the bottom surface of the lower cover
4 b. The fitting recess 26 is provided at a position facing the fitting protrusion 25 on the other
surface 6 b of the leg 6. The fitting recess 26 is formed of a part of the elastic body D exposed
from the third hole 23 c formed in the other surface 6 b of the leg 6.
[0044]
In the stopper mechanism 24, as shown in FIG. 9, when the fitting protrusion 25 is fitted in the
fitting recess 26, the fitting recess 26 is in a state of holding the fitting protrusion 25 while being
elastically deformed. Thereby, it is possible to fix leg 6 to the bottom of main part 4.
[0045]
As shown in FIGS. 2 to 4 and 6 to 8, the lower cover 4 b is provided with a third anti-vibration
member 27 in contact with the hinge portion 5. The third vibration isolation member 27 absorbs
the vibration transmitted from the main body 4 to the leg 6 via the hinge 5, and is made of an
elastic material such as rubber or elastomer. The third vibration isolation member 27 is disposed
on the inner side of the lower cover 4 b and provided in a state of being exposed to the outside of
the lower cover 4 b from the openings 4 g provided on both sides across the hinge portion 5.
[0046]
As shown in FIGS. 1 to 3 and 5 to 7, the side cover 4 c is provided along the side surface on the
lower side of the enclosure 3 when the main body 4 is inclined. Inside the side cover 4c, as
shown in FIG.9 and FIG.10, the 4th anti-vibration member 28 which contacts the side surface of
the enclosure 3 (body part 3c) is provided. The fourth vibration damping member 28 absorbs the
vibration transmitted from the enclosure 3 to the main body 4 and is made of, for example, an
elastic material such as rubber or elastomer.
[0047]
01-05-2019
14
Further, inside the side cover 4c, a wire 29 connecting the speaker unit 2 and the control circuit
board is routed. The fourth vibration isolation member 28 has a plurality of convex portions 28 a
that hold the wire 29 between the enclosure 3 and the fourth vibration isolation member 28. The
plurality of convex portions 28 a have a substantially hat shape in which a part of the fourth
vibration isolation member 28 is bulged toward the enclosure 3, and is provided side by side in
the longitudinal direction of the fourth vibration isolation member 28.
[0048]
Further, a fifth vibration isolation member 30 is provided at a contact portion between the wire
29 and the open end 3 a of the enclosure 3. The fifth vibration isolation member 30 is made of,
for example, an elastic material such as rubber or elastomer, and is attached to the contact
portion of the wire 29 with the open end 3 a so as to protect the wire 29.
[0049]
In the speaker device 1 having the above configuration, even if the inner casing 12 of the
enclosure 3 vibrates due to the sound emitted from the back side of the speaker unit 2, the
vacuum layer 13 causes the inner casing 12 to the outer casing 11. The propagation of
vibrations to is prevented. Thereby, the vibration transmitted to the outside through the
enclosure 3 can be suppressed. Furthermore, it is also possible to reduce the weight of the
enclosure 3.
[0050]
In the speaker device 1 of the present embodiment, in a state where the speaker unit 2 is fitted to
the inside of the inner casing 12 from the opening end 3 a described above, the speaker unit 2 is
the enclosure 3 via the seal member 15 contacting the step portion 14. Is attached to Also, the
speaker unit 2 is attached via the seal member 15 in a non-contact state with the enclosure 3.
Furthermore, the sealing member 15 seals the space between the speaker unit 2 and the
enclosure 3 in a state in which the sealing member 15 is in close contact with the stepped
portion 14 along the entire circumference.
[0051]
01-05-2019
15
Thereby, in the speaker device 1 of the present embodiment, the space between the speaker unit
2 and the enclosure 3 can be sealed with a simple structure, and the vibration from the speaker
unit 2 is transmitted to the enclosure 3 It is possible to prevent that. Further, the mounting of the
speaker unit 2 to the enclosure 3 is easy, and the number of parts and the number of assembling
steps can be reduced.
[0052]
Further, in the speaker device 1 of the present embodiment, the side surface (body portion 3c)
other than the side surface on which the side cover 4c of the outer housing 11 is disposed is
exposed to the outside between the upper cover 4a and the lower cover 4b. In the closed state,
the enclosure 3 is held by the main body 4. In the speaker device 1 of the present embodiment,
since the enclosure 3 has a vacuum double structure, the vacuum layer 13 not only prevents the
propagation of vibration from the inner housing 12 to the outer housing 11, but also the outer
housing 11. Propagation of vibration from the inner casing 12 to the inner casing 12 can also be
prevented. Therefore, in the speaker device 1 according to the present embodiment, the
enclosure 3 is held by the main body 4 in a state in which at least a part of the outer housing 12
(body 3c) is exposed to the outside, thereby further reducing the size and weight Is possible.
[0053]
In the present embodiment, the upper cover 4a and the lower cover 4b are connected by one side
cover 4c. However, the present invention is not limited to such a structure, and the upper cover
4a is formed by a plurality of side covers 4c. It is also possible to connect between the lower
cover 4b and the lower cover 4b.
[0054]
Further, the side cover 4c is not limited to the configuration disposed along the side surface of
the enclosure 3 (outer housing 12) described above, but in a state separated from the side
surface of the enclosure 3 (outside housing 12) It is also possible to connect with the lower cover
4b.
In the case of this configuration, the side surface (body part 3c) of the enclosure 3 (outer housing
01-05-2019
16
12) can be exposed over the entire circumference. Moreover, it is possible to draw the wiring 29
inside the side cover 4c formed in a cylindrical shape. Furthermore, the side cover 4c can also
function as a handle (gripping portion).
[0055]
Further, in the speaker device 1 of the present embodiment, the vibration transmitted from the
leg portion 6 to the installation surface S is absorbed by the first vibration isolation member 21
and the second vibration isolation member 22 described above, and the third vibration isolation
member 27 Thus, the vibration transmitted from the main body 4 to the leg 6 through the hinge
5 is absorbed, and the vibration transmitted from the enclosure 3 to the main body 4 is absorbed
by the fourth vibration isolation member 28. Thereby, when the main body portion 4 is installed
on the installation surface S in a standing or inclined state, unnecessary vibration is suppressed
in any state to obtain the speaker device 1 excellent in sound reproducibility and installation
stability. Is possible.
[0056]
The present invention is not necessarily limited to the configuration of the above speaker device
1, and various changes can be made without departing from the scope of the present invention.
For example, the speaker device to which the present invention is applied is not limited to the
configuration in which one speaker unit 2 is attached to one end of the enclosure 3 having a
bottomed cylindrical shape with one end opened as described above via the seal member 15 Two
speaker units may be attached to both ends of the enclosure having an open cylindrical shape
through sealing members. Also in this case, it is possible to obtain the same effect as that of the
above speaker device 1 by adopting the above-described mounting structure of the speaker unit
2 to the enclosure 3.
[0057]
Moreover, the speaker apparatus to which this invention is applied is not necessarily limited to
what used the enclosure 3 which has the vacuum double structure mentioned above, It is also
possible to use the enclosure which covers the back side of the other speaker unit It is.
[0058]
DESCRIPTION OF SYMBOLS 1 ... Speaker apparatus 2 ... Speaker unit 3 ... Enclosure 3a ... Opening
01-05-2019
17
end 4 ... Main-body part 4a ... Upper cover 4b ... Lower cover 4c ... Side cover 5 ... Hinge part 6 ...
Leg part 11 ... Outer case 12 ... Inner case 13 ... Vacuum layer 14 Stepped portion 15 Sealing
member 18 Sound emitting portion 21 First vibration-proofing member 22 Second vibrationproofing member 23a First hole 23b Second hole 24 24 Stopper mechanism 27 ... 3rd vibrationproof member 28 ... 4th vibration-proof member 29 ... Wiring 30 ... 5th vibration-proof member
D ... Elastic body S ... Installation surface
01-05-2019
18