JP2016025539

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DESCRIPTION JP2016025539
A housing structure of a speaker device capable of facilitating end processing of an exterior sheet
and simultaneously performing airtightness of the housing. A tubular case main body having first
and second openings at both ends, an exterior sheet attached to an outer peripheral wall surface
of the case main body, and a first member fitting to the first opening And a second member fitted
to the second opening. The exterior sheet has folds at least on the sides closer to the first and
second openings. The folding margin is bent inside the housing body. The first member is fitted
in the first opening with the folding margin of the exterior sheet. The second member is fitted in
the second opening with the folding margin of the exterior sheet. [Selected figure] Figure 4
Speaker device housing structure
[0001]
The present invention relates to a speaker device, and more particularly to the exterior
processing thereof.
[0002]
In order to enhance the decorativeness of the appearance of the speaker device, an exterior
decorative sheet attached to the periphery of the housing has been proposed (for example, Patent
Document 1).
[0003]
Japanese Patent Application Laid-Open No. 09-157612
02-05-2019
1
[0004]
The sheet member as in Patent Document 1 may peel off after a long period of time, and in order
to maintain the decorative appearance, the end processing is necessary.
In addition, the housing of the speaker device needs to have an airtight structure inside in order
to improve the sound quality.
Although the housing of the speaker device is often configured by combining a plurality of
members, in the case of a housing having such a structure, it is necessary to ensure the
airtightness of the joint of each member.
[0005]
Therefore, an object of the present invention is to provide a casing structure of a speaker device
capable of facilitating end processing of an exterior sheet and simultaneously performing
airtightness of the casing.
[0006]
The casing structure of the speaker device according to the present invention includes a
cylindrical casing main body having first and second openings at both ends, an exterior sheet
attached to the outer peripheral wall surface of the casing main body, and a first opening. And a
second member fitted in the second opening.
The exterior sheet has folds at least on the sides closer to the first and second openings.
The folding margin is bent inside the housing body. The first member is fitted in the first opening
with the folding margin of the exterior sheet. The second member is fitted in the second opening
with the folding margin of the exterior sheet.
[0007]
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In the above invention, the housing body may be provided with a recess in which the panel board
is fitted to a part of the outer peripheral wall surface. The exterior sheet is attached to the outer
peripheral wall surface of the housing body other than the recess. The exterior sheet has a fold at
the side of the recess, and the fold is folded inside the recess. The panel board is fitted in the
recess with the folding margin of the exterior sheet.
[0008]
In the above-mentioned invention, a rib may be provided on the casing body side peripheral edge
portion of the first member. In addition, a rib may be provided on the casing main body side
peripheral portion of the second member. The rib cooperates with the inner wall of the housing
body to sandwich the folding margin.
[0009]
In the above invention, the casing body may be cylindrical, the first member may be a baffle
plate, and the second member may be a second casing.
[0010]
As described above, according to the present invention, the end processing of the exterior sheet
and the airtightness of the housing can be realized with a simple structure and assembly process.
[0011]
A front view, an internal structure view and a bottom view of a speaker device according to an
embodiment of the present invention A perspective view of a speaker device An exploded
perspective view of a speaker device A diagram for explaining an attaching process of an exterior
sheet of a speaker device Dissembled perspective view Partial cross-sectional view enlarging the
pinched portion of the exterior sheet Block diagram of the circuit of the speaker device
[0012]
A speaker to which the present invention is applied will be described with reference to the
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drawings.
FIG. 1 is a front view, an internal structural view and a bottom view of a speaker device 1
according to an embodiment of the present invention.
FIG. 2 is a perspective view of the speaker device 1.
FIG. 3 is an exploded perspective view of the speaker device 1.
[0013]
The speaker device 1 of this embodiment has a vertically oriented substantially cylindrical
housing 10, and has two speaker units 101 and 102 disposed on the upper and lower surfaces of
the housing 10. The speaker unit 101 installed on the upper surface is a high-pitched speaker
and is hereinafter referred to as a tweeter 101. The speaker unit 102 installed on the lower
surface is a bass speaker, and is hereinafter referred to as a woofer 102.
[0014]
The housing 10 includes an upper housing 11, a lower housing 12, and baffle plates 14 and 15
described later. The lower housing 12 has a large diameter short cylindrical shape. The upper
housing 11 is smaller in diameter than the lower housing 12 and has a flange 11C at its lower
end. The outer periphery of the flange 11C has substantially the same diameter as the inner
diameter of the lower housing 12, and the flange 11C is fitted to the lower housing 12, and the
outer sheet 44 described later is sandwiched and airtightly joined by screws 45. The bonding of
the lower housing 12 and the flange 11C of the upper housing 11 will be described in more
detail later. A partition plate 11A is provided inside the upper housing 11, and the partition plate
11A divides the internal space of the housing 11 up and down. The upper housing 11 is made of
resin, and the outer peripheral side is mirror-finished by hot stamp foil or mirror-finished by
vapor deposition plating.
[0015]
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A tweeter baffle plate 14 is attached to the upper surface of the upper housing 11 upward. The
tweeter 101 is attached upward to the baffle plate 14 for tweeter. A tweeter cabinet 111 is
configured by the space above the upper housing 11 divided by the tweeter baffle plate 14 and
the partition plate 11A. Further, a woofer baffle plate 15 is attached downward to the lower
surface of the lower housing 12. A woofer 102 is attached downward to the woofer baffle plate
15. A woofer cabinet 112 is constituted by a space under the upper housing 11 and the lower
housing 12 which are separated by the woofer baffle plate 15 and the partition plate 11A.
[0016]
An operation panel 40 is provided on the side surface of the lower housing 12. The operation
panel 40 has a switch box 13 which is a recess formed on the side surface of the lower housing
12, and a panel board 40 A fitted on the surface of the switch box 13. The operation panel 40 is
provided with a plurality of switches 41 such as a power switch for turning on / off the power of
the speaker device 1, a DC jack 42 for connecting an external power supply, an audio jack 43 for
inputting an analog audio signal, etc. ing. The switch 41, the DC jack 42, and the audio jack 43
are provided in the switch box 13 and exposed to the outside from the opening of the panel
board 40A. The panel board 40A of the operation panel 40 is made of resin. An outer peripheral
side surface of the lower housing 12 other than the operation panel 40 is covered with an outer
covering sheet 44 of synthetic leather.
[0017]
FIG. 4A, FIG. 4B, and FIG. 4C are diagrams for explaining the attaching process of the exterior
sheet 44. FIG. FIG. 5 is an exploded perspective view from the bottom of the lower housing 12.
6A and 6B are partial cross-sectional views in which the sandwiching portion of the exterior
sheet 44 is enlarged.
[0018]
In FIG. 5, an operation panel 40 is provided on the side surface of the lower housing 12, and an
exterior sheet 44 is attached to a place (exterior surface) 12 a other than the operation panel 40.
As shown in FIG. 4A, the exterior sheet 44 is made one size larger than the exterior surface 12A
of the lower housing 12, and has a folding margin 441 on the upper side, a folding margin 442
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on the lower side, and A fold margin 443 is formed.
[0019]
The exterior sheet 44 is attached so as to be wound around the exterior surface 12A of the lower
housing 12, as shown in FIGS. 4 (B) and 4 (C). A double-sided tape (not shown) is used for
pasting. Then, the upper folding margin 441 is folded into the inside of the lower housing 12 at
the upper side thereof. The lower fold margin 442 is folded into the inside of the lower housing
12 at the lower side thereof. Further, the left and right folding margins 443 are folded into the
switch box 13 at the boundary of the exterior surface 12A on the side surface of the lower
housing 12. The upper and lower folds 441 and 442 are provided with notches 441A and 442A
so that the upper and lower folds 441 and 442 can be easily folded into the inner side of the
lower casing 12 after the outer sheet 44 is wound around the lower casing 12.
[0020]
In the state of FIG. 4C, the upper housing 11 is engaged with the upper side, and the woofer
baffle plate 15 is engaged with the lower side. As shown in FIG. 3, the upper housing 11 (flange
11 </ b> C) is fixed to the lower housing 12 by screws 45. Further, as shown in FIG. 6A, a rib
11D is formed circumferentially on the lower surface of the flange 11C. The fold margin 441 is
sandwiched and fixed between the inner wall surface of the lower housing 12 and the rib 11D. As
a result, the gap between the upper housing 11 and the lower housing 12 is filled and the sealing
is achieved. In addition, a sealing material (not shown) is inserted in the upper surface of the
switch box 13 in which there is no fold of the exterior sheet 44, and airtightness is maintained.
[0021]
Further, as shown in FIG. 5, the woofer baffle plate 15 is fixed to the lower housing 12 together
with the woofer 102 by means of screws 46. As shown in FIG. 6B, a rib 15B is formed
circumferentially on the back surface of the woofer baffle plate 15. As shown in FIG. The fold
margin 442 is sandwiched and fixed between the inner wall surface of the lower housing 12 and
the rib 15B. Moreover, the gap between the lower housing 12 and the woofer baffle plate 15 is
thereby filled and made airtight. In addition, a sealing material (not shown) is inserted in the
lower surface of the switch box 13 in which there is no fold of the exterior sheet 44, and
airtightness is maintained.
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[0022]
Further, the left and right folding margins 443 folded in the switch box 13 are sandwiched and
fixed between the wall surface of the switch box 13 of the lower housing 12 and the panel board
40A. The panel board 40A is fixed to the switch box 13 with screws or the like.
[0023]
Further, with the above-described structure, the end of the exterior sheet 44 which is synthetic
leather is not folded into the inside of the apparatus and exposed to the surface, so that the end
can be simply and beautifully treated.
[0024]
A bass reflex port 16 is provided on the side of the upper housing 11 on the woofer cabinet 112
side.
A bass reflex duct 17 is connected to the bass reflex port 16 toward the inside of the woofer
cabinet 112. The bass reflex duct 17 is bent downward inside the woofer cabinet 112, and has a
length for resonating at a low frequency.
[0025]
The upper housing 11 is covered with a cover 20 at the top and the side. The cover 20 is made of
a metal sheet of punched mesh. Because of the punched mesh, sound and light almost pass
through the cover 20, but a part of the light is reflected and diffused inside the cover 20. The
cover 20 has a side surface and an upper surface, and is in the shape of a tumbler that is turned
upside down. The outer diameter of the cover 20 is substantially the same as that of the lower
housing 12. Therefore, the speaker device 1 covered with the cover 20 has a substantially
cylindrical appearance as a whole.
[0026]
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A diffuser 22 is provided inside the upper surface of the cover 20. The diffuser 22 is
substantially conical downward, and reflects the high-pitched sound emitted from the tweeter
101 in all directions. Further, the diffuser 22 is made of resin, and its surface is mirror-polished
by vapor deposition plating using hot stamp foil. Thus, not only voice but also light is reflected in
all directions.
[0027]
The woofer baffle plate 15 has three screw holes 15A protruding downward in a pole shape of a
predetermined height. The flat head screw 30 is screwed into the screw hole 15A from the back
surface of the diffuser 23. Due to the height of the screw 30 and the screw hole 15A, the diffuser
23 is provided apart from the woofer 102 by a predetermined distance. The diffuser 23 has a
substantially conical shape upward, and reflects or diffracts mid-bass sound emitted from the
woofer 102 in all directions.
[0028]
The speaker device 1 is vertically installed with the diffuser 23 as a base, as shown in FIG. That
is, the diffuser 23 doubles as the base of the speaker device 1. For this reason, the cushioning
material 31 is attached to the bottom surface in a ring shape. As a result, there is no need to
provide a separate leg, so the structure can be simplified and the installation area can be
reduced.
[0029]
A cover 32 is provided between the outer periphery of the diffuser 23 and the outer periphery of
the woofer baffle plate 15. The cover 32 is made of a metal thin plate of punched mesh, and
allows the sound emitted from the woofer 102 to pass through, but when the speaker device 1 is
installed on a table or the like, the user's finger or foreign object invades. To prevent.
[0030]
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A diffusion ring 27 made of a milky white resin is provided on the tweeter baffle plate 14. The
diffusion ring 27 is formed in a ring shape so as to cover the tweeter baffle plate 14 so as not to
cover the tweeter 101. A light guide ring 26 and a light emitting diode (hereinafter referred to as
an LED) 25 are provided below the diffusion ring 26 and at the peripheral portion of the tweeter
baffle plate 14. The LEDs 25 are provided upward at two peripheral portions of the baffle plate
14. The light guide ring 26 is provided so as to cover the upper side of the LED 25 and
propagates the light of the point emission LED 25 around the entire ring to obtain a surface
emission effect. At a position facing the LED 25 of the light guide ring 26, a protrusion (not
shown) for introducing light of the LED 25 is formed. When the LED 25 is turned on, light is
introduced into the light guide ring 26 through the protrusion, and the light propagates around
the entire circumference of the light guide ring 26 and becomes bright. This light of the light
guide ring 26 also reaches the diffusion ring 27 and becomes bright as if the entire diffusion ring
27 were emitting light. In addition, since the diffuser 22 is provided on the upper surface of the
cover 20, the light does not pass directly upward and does not illuminate the ceiling.
[0031]
In addition, a waist light guide ring 29 is provided at the lower end of the outer periphery of the
upper housing 11 so as to be in contact with the flange 11C. The LEDs 28 are provided at two
places on the upper end peripheral portion of the lower housing 12. A small hole is opened at a
position facing the LED 28 of the flange 11 C, and the light of the LED 28 is introduced into the
light guide ring 29. When the LED 28 is lit, light is introduced to the light guide ring 29 through
the small holes, and the entire light guide ring 29 becomes bright as if it were emitting light.
[0032]
FIG. 7 is a block diagram of an electric circuit of the speaker device 1. The speaker device 1 has a
Bluetooth (registered trademark) communication unit 52 and an analog input unit 53 as a circuit
for inputting an audio signal. The analog input unit 53 includes the audio jack 43 shown in FIG.
An audio signal input from the Bluetooth (registered trademark) communication unit 52 or the
analog input unit 53 is input to the signal processing unit 51. The signal processing unit 51
performs processing such as equalization on the input audio signal, and separates the audio
signal into a high range component and an intermediate low range component. The separated
high frequency component signal is input to the amplification circuit 54. The signal of the midlow range component is input to the amplification circuit 55. The amplification circuit 54 is an
amplification circuit that drives the tweeter 101, and is adjusted to be suitable for the high range.
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Further, the amplification circuit 55 is an amplification circuit for driving the woofer 102, and is
adjusted to be suitable for the mid-low range. The amplification circuit 54 inputs the amplified
high-pitched audio signal to the tweeter 101. The tweeter 101 emits this signal as sound. The
amplification circuit 55 inputs the amplified mid-low range audio signal to the woofer 102. The
woofer 102 emits this signal as sound.
[0033]
The control unit 50 controls the pairing operation of the Bluetooth communication unit 52, the
equalization operation of the signal processing unit 51, the gains of the amplification circuits 54
and 55, and the like. The control unit 50 is configured by a microcomputer. The control unit 50
is further connected to an operation unit 56 and a lighting circuit 57. The operation unit 56
includes various switch groups 41 provided on the operation panel 40, and receives operations
such as power on / off, volume adjustment, and audio input selection by the user. The lighting
circuit 57 is a circuit that lights the LEDs 25 and 28. When the power is turned on, the control
unit 50 supplies power to the audio circuit and also supplies power to the lighting circuit 57. The
lighting circuit 57 lights the LEDs 25 and 28. The speaker device 1 incorporates a battery (not
shown), and operates with an external power supply supplied from the battery or the DC jack 42.
[0034]
In addition, the speaker apparatus 1 is not limited to the shape demonstrated above.
Modifications are free within the scope of the present invention. For example, the lower housing
12 may not be cylindrical. Further, the member fitted onto the lower housing 12 (housing main
body) may not be the upper housing 11. For example, a tweeter baffle may be directly fitted.
[0035]
Reference Signs List 10 housing 11 upper housing (second member) 11C flange 11D rib 12
lower housing (housing main body) 15 woofer baffle plate (first member) 15B rib 44 exterior
sheet 441, 442, 443 fold margin 101 tweeter ( Second speaker unit) 102 woofer
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