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JP2010109445

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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 JP2010109445
To improve the resistance and strength against load of a speaker mounting rack by a simple
configuration. A shelf having a top plate and a bottom plate, and one keel part provided between
the top plate and the bottom plate of the shelf. And a keel structure composed of a plurality of
ribs, one end of which is fixed to the carina. Then, the speaker device is disposed in a space
formed by the keel portion of the keel structure and the ribbing material. The keel portion is
centrally disposed along the longitudinal direction of the shelf, and the plurality of rib members
are disposed substantially at right angles to the keel portion. [Selected figure] Figure 7
Speaker mounting rack
[0001]
The present invention relates to an audio rack mounted with a speaker device, a so-called
speaker built-in rack.
[0002]
Various audio reproducing apparatuses have been proposed to enjoy audio using a radio
program, a music CD (Compact Disc), a DVD (Digital Versatile Disk), and the like as a sound
source indoors.
Among such audio reproducing devices, there are devices using surround technology for
realizing a realistic sound field like a movie theater, and surround technology for realizing a
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sound field similar to a music hall or the like. .
[0003]
In order to perform surround reproduction, it is necessary to install a large number of speaker
devices for outputting an audio signal processed for surround reproduction to an audio device.
For example, in a surround system (5.1 channels), left front (FL: Front Left), right front (FR: Front
Right), left rear left surround (SL: Surround Left) with respect to the listener's forward direction.
Right surround (SR: Surround Right) at the rear right, 5 channels of speakers placed in front of
the center (FC: Front Center) and 0.1 channels of subwoofers (SW: Sub Woofer) were installed.
With this configuration, it is possible to realize 5.1 channel surround playback around the
listener.
[0004]
In recent years, a television receiver equipped with a flat panel display instead of a cathode-ray
tube television (hereinafter referred to as "thin television receiver"). ) Is rapidly spreading.
Examples of thin television receivers include so-called liquid crystal television receivers, organic
EL television receivers, plasma television receivers and the like. In a flat-screen television
receiver, an audio signal that enables realistic playback is generated by digital signal processing
using a DSP (Digital Signal Processor) or the like, and the built-in speaker device emits sound.
[0005]
By the way, one of the items that determine the sound quality of the speaker device is its size,
and if the resonance space of the sound output from the back of the speaker device housed in the
enclosure is large, the reproduction characteristic of the frequency of the deep bass region is It is
said that it is good.
[0006]
However, since the thin television receiver is thin, the thickness or the depth is small, and the
performance improvement of the built-in speaker device is limited.
[0007]
In addition, in the case of performing surround reproduction using a plurality of speaker devices,
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it is necessary to lay a cable for sending an audio signal to the installed speaker device, but the
difficulty of the wiring and the troublesomeness of adjusting the installation angle of the speaker
device Inconvenient such as not being able to secure installation space arises.
[0008]
Then, in order to solve these problems, the speaker mounting rack which can accommodate
various audio apparatus, such as a flat-screen television receiver, a speaker apparatus, and an
amplifier apparatus, is provided.
The speaker mounting rack incorporates an external speaker device together with an amplifier
device and the like in the rack itself instead of the speaker device built in the thin television
receiver and integrates the same into a rack receiver (for example, see Patent Document) See 1).
[0009]
The above-mentioned speaker mounting rack is sold with the speaker device (and further the
amplifier device) built in from the beginning, and is made to solve the problems such as the
sound quality and the arrangement space of the speaker device.
[0010]
JP, 2006-352579, A
[0011]
By the way, although the conventional CRT type television apparatus is very heavy as compared
with the flat screen television receiver of the same screen size, since the flat panel television
receiver is thin and light, the strength of the speaker mounting rack is generally not required
much.
[0012]
In recent years, the flat television receiver has been increased in size, and the weight has been
increased along with it, and the load on the top plate of the speaker mounting rack has been
increased.
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[0013]
In addition, the speaker mounting rack is often placed in the living room, and a child may ride on
and play, or an adult may use it instead of a step, but it was not originally designed for such use. .
[0014]
However, there is a limit to the cost of materials that can be applied to increase the strength of
the speaker mounting rack, while various materials are rising.
[0015]
The present invention has been made in view of such a situation, and aims to enhance the load
resistance and strength of the speaker mounting rack by a simple configuration.
[0016]
A speaker mounting rack according to one aspect of the present invention includes a shelf having
a top plate and a bottom plate, a one keel portion provided between the top plate and the bottom
plate of the shelf, and a plurality of one end fixed to the keel portion And a keel structure
composed of a cocoon material.
Then, the speaker device is disposed in a space formed by the keel portion of the keel structure
and the ribbing material.
[0017]
In the present invention, it is preferable that the keel part be centrally disposed along the
longitudinal direction of the shelf, and the plurality of ribs be disposed substantially at right
angles to the keel part.
[0018]
In the above-mentioned present invention, it comprises: a plurality of first beams connecting the
other ends between the adjacent plurality of ribs and a plurality of second beams connecting the
ends between the adjacent first beams. Is preferred.
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[0019]
In the present invention, the cross section of the keel portion is preferably substantially U-shaped
having an opening at the top.
[0020]
In the present invention, the above-mentioned present invention further comprises an amplifier
device for performing predetermined processing on an audio signal, and the plurality of speaker
devices are balanced at a predetermined position on the front side centering on the keel
Preferably the device is arranged.
[0021]
Furthermore, in the present invention, a part of a casing constituting the speaker device is
directly fixed to the keel, and the speaker device is made to function as a cage of the keel
structure.
[0022]
According to the present invention configured as described above, by adopting a keel structure
having a keel portion and a plurality of ribs, the structural strength against the weight related to
the shelf can be enhanced with a simple structure.
[0023]
According to the present invention, the resistance to the load of the speaker mounting rack can
be enhanced by the simple configuration.
[0024]
Hereinafter, an example of the best mode for carrying out the present invention will be described
with reference to the attached drawings.
The explanation will be made in order according to the following items.
1.
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First embodiment (carb structure: an example in which a speaker device is not used)
Second embodiment (carb structure: an example using a speaker device) 3.
Modified example
[0025]
<1.
First embodiment> [Appearance of a speaker mounting rack] Hereinafter, a first embodiment of
the present invention will be described with reference to Figs.
The present embodiment is an example applied to a speaker mounting rack on which a speaker
and an amplifier device compatible with 5.1 channels are mounted.
[0026]
First, the outline of the configuration of the speaker mounting rack of the present embodiment
will be described with reference to FIGS.
[0027]
FIG. 1 shows an external view of a speaker mounting rack in which a speaker device is built.
FIG. 2 shows a state in which the top plate of the speaker mounting rack of FIG. 1 is removed.
Further, FIG. 3 shows a front view of the speaker mounting rack of FIG.
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[0028]
The speaker mounting rack 100 is provided on the bottom surface of the shelf 2 at the upper
stage where the keel structure is configured, the shelf 3 at the lower stage, the side columns 4L
and 4R provided between the shelves 2 and 3, and the shelf 3 It has two legs 5 and has a twostage configuration.
For example, a glass plate 1 is disposed on the upper surface of the upper shelf 2 in order to
improve the interior.
Moreover, the top plate 8 is provided in the shelf 2 at the surface where the glass plate 1 is
mounted.
Furthermore, on the side (upper part) near the glass plate 1 of the front of the shelf 2, for
example, the decorative plate 2a is installed.
A television receiver, an audio reproducing device, etc. are mounted on the glass plate 1 on the
upper surface of the shelf 2, and electronic equipment such as a video deck and a DVD recorder
are stored in the space between the shelf 2 and the shelf 3. can do.
The decorative plate 4a is attached to the side of the side columns 4L and 4R.
[0029]
Inside the shelf 2, a left rear speaker SL, a left front speaker FL, a center front speaker CL, CC, CR,
a right front speaker FR, and a right rear speaker SR are installed in the front direction from the
left.
Further, at the lower part of the shelf 3, a storage box 6 storing the subwoofer 7 is set.
Then, the audio signal is supplied to an amplifier (described later) housed under the top 8 as a
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signal source, such as an audio reproducing device or a television receiver (not shown). The
speakers SL to SR and the subwoofer 7 are connected by cables to the speaker connection
terminals of the amplifier device, receive the supply of audio signals from the amplifier device,
and perform audio output.
[0030]
The speaker mounting rack 100 is disposed in front of the viewer, and the speakers SL to SR
installed in the front direction of the shelf 2 are disposed to face the viewer. There is an optimal
listening area (not shown) in the vicinity of the viewer, and in this area, it is possible to listen to a
particularly realistic sound reproduced in surround.
[0031]
[Internal Structure of Shelf] Next, the internal structure of the shelf 2 provided with a keel
structure will be described with reference to FIGS. 4 to 6.
[0032]
FIG. 4 is a schematic perspective view showing the internal structure of the shelf 2 in which the
keel structure is configured.
FIG. 5 is a top view showing the internal structure of the shelf 2 in which the keel structure is
configured. Furthermore, FIG. 6 is a back perspective view which shows the internal structure of
the shelf 2 with which the keel structure is comprised.
[0033]
Inside the shelf 2 from which the top plate has been removed, a keel portion 20 disposed
substantially at the center of the short along the longitudinal direction of the shelf 2 and a keel
portion 20 disposed substantially at right angles to fix one end to the keel portion 20 A plurality
of ribs 21 to 26 and 51 to 54 form a keel structure. This keel structure includes a plurality of
first beams 31, 32, 61, 62 connecting the ends of the plurality of adjacent ribs 21 to 26, 51 to
54, and a plurality of adjacent first beams A plurality of second beams 41 to 43 are provided to
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connect the end portions between 31 and 32.
[0034]
A plurality of speaker housings (speaker devices) 11 to 13 are installed at predetermined
positions on the front side in a balanced manner with the keel portion 20 as a center line, and the
amplifier device 10 is similarly installed at the center on the back side. That is, the speaker
housings 11 to 13 are disposed at predetermined positions in the space formed by the keel 20
and the ribs 21 to 26, and further, the amplifier device is disposed in the space formed by the
keel 20 and the ribs 52, 53 Install 10 The beam 63 is attached to the back surface of the
amplifier device 10, and the first beams 61 and 62 on both sides thereof are connected and fixed
to the bottom plate 9. The keel structure configured in this manner is fixed to the bottom plate 9
of the shelf 2 using a means such as screwing.
[0035]
The top plate 8, the bottom plate 9, the keel bone portion 20 and the ribs 21 to 51 constituting
the keel structure should be made of a strong material such as metal so as to withstand the load
applied to the top plate 8, Light weight is desirable. In addition, the material is not limited as long
as each member constituting the keel structure satisfies the required predetermined strength and
light weight conditions.
[0036]
[Details of keel structure] Next, the keel structure formed in the speaker mounting rack 100 will
be described in more detail with reference to FIGS. 7 to 10.
[0037]
FIG. 7 is a perspective view showing a keel structure of the speaker mounting rack 100. As
shown in FIG.
FIG. 8 is a top view showing the keel structure of the speaker mounting rack 100. As shown in
FIG. FIG. 9 is a cross-sectional perspective view of the speaker mounting rack 100 taken along
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line XX (see FIG. 1). Furthermore, FIG. 10 is a cross-sectional view of the speaker mounting rack
100 taken along line X-X (see FIG. 3).
[0038]
The keel bone portion 20 of the keel bone structure 100A has a substantially U-shaped cross
section with an opening at the top, as will be described in detail later, and has two side portions
and a connecting portion connecting them. Support portions 20a for supporting and fixing the
top plate 8 are formed at predetermined positions (for example, five places) at one end (end
portion of the side surface portion) of the U-shape. As shown in FIGS. 9 and 10, the support
portion 20a is a plane parallel to the top plate 8 and has an area appropriate for supporting a
load received from the top plate 8. For example, a screw may be inserted through the top plate 8
It is fixed by 70.
[0039]
The brazing material 21 to 26 fixed to the front side of the keel part 20 is divided into two of the
brazing material 22 to 25 and the brazing material 21 and 26 according to its role. The ribs 22
to 25 are used in the middle of the keel portion 20, and the ribs 21 and 26 are used at the end.
[0040]
First, the ribs 22 to 25 will be described. Here, although there is a difference in whether or not
the brazing materials 22 to 25 have symmetrical shapes, they all have the same function, and
therefore, the brazing material 22 will be described as a representative.
[0041]
The brazing material 22 is provided so as to fix the sheet metal in a state of being vertically
arranged in a predetermined area substantially at right angles to the keel portion 20 from the
lateral direction. The rib 22 is formed with a fixing portion 22a for fixing to the keel portion 20,
an attaching portion 22b to which a beam 31 described later is fixed, and a supporting portion
22c for supporting and fixing the top plate 8 .
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[0042]
The fixing portion 22a has a surface formed by forming one end of the wedge member 22 into a
bowl shape and is in contact with the side surface portion (attachment portion) of the keel
portion 20, and is fixed to the side surface portion using a screw 70 or the like. Do. The
attachment portion 22b is attached to the beam 31 by using a screw 70 or the like, with a
surface formed by forming the other end of the wedge member 22 in a bowl shape in contact
with a beam 31 described later.
[0043]
The mounting portion 22 b is formed in a bowl shape to form a surface with respect to the upper
side, and is formed so that a beam 41 described later can be mounted using the surface. The
supporting portion 22 c has a surface parallel to the top 8 and has an area suitable for
supporting a load received from the top 8 as in the case of the support 20 a of the keel portion
20. The fixing by the screw 70 etc. is performed.
[0044]
Further, in the brazing material 23, as in the case of the brazing material 22 described above, a
fixing portion 23a, an attaching portion 23b, and a supporting portion 23c are formed. Further,
in the case of the wedge member 24 as well, a fixing portion 24 a, an attaching portion 24 b to
which the beam 32 is attached, and a supporting portion 24 c are formed. Further, in the case of
the wedge member 25 as well, a fixing portion 25a, an attaching portion 25b to which the beam
32 is attached, and a supporting portion 25c are formed.
[0045]
In order to stabilize the fixation of each of the rib members 22 to 25 and the keel portion 20, the
rib members 22 to 25 are provided with an auxiliary hooking portion (see hook portion 23a1 in
FIG. 9).
[0046]
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Next, the ribs 21 and 26 will be described.
Here, since the ribs 21 and 26 are provided at the end of the keel portion 20 and have a
symmetrical shape and the same function, the rib 21 will be described as a representative.
[0047]
The wedge member 21 has a substantially U-shaped cross section, and includes two side portions
21a and 21b and a connecting portion connecting the two side portions 21a and 21b. The side
surface portion 21a is for fixing the side surface portion of the keel portion 20 and the brazing
material 21. The end portion of the side surface portion 21a is formed in a bowl shape in a
direction in which the opening is opened, and a support portion 21a1 is provided. The support
portion 21a1 is configured to support and fix the top plate 8 and to be fixed to a side surface
portion on the opposite side of the side surface portion of the keel portion 20, prevent opening
of the opening portion of the keel portion 20, and reinforce It is made to do. Further, the side
surface portion 21b is provided with a support portion 21b1 by forming the opening portion in a
hook shape in the direction opposite to the support portion 21a1. The support portion 21 b 1 is
configured to support and fix the top plate 8 and to which a beam 41 described later is attached.
[0048]
Further, in the brazing material 26, as in the case of the above-described brazing material 21,
side surface portions 26a and 26b and support portions 26a1 and 26b1 are formed.
[0049]
Next, the wedge members 51 to 54 fixed on the back side of the keel portion 20 will be
described.
Here, although there is a difference in whether or not the brazing materials 51 to 54 have
symmetrical shapes, they all have the same function, and therefore, the brazing material 51 will
be described as a representative.
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[0050]
The wedge member 51 has a substantially U-shaped cross section, and includes two side surface
portions 51a and 51b and a connecting portion connecting them. The side surface portion 51a is
for fixing a beam 61 to be described later and the brazing material 51, and a support portion 51c
is provided by forming the end portion in a bowl shape in a direction in which the opening is
closed. The support portion 51 c is for supporting and fixing the top 8. The side surface portion
51 b is for fixing the side surface portion of the keel portion 20 and the brazing material 51, and
the end portion of the side surface portion 51 b is formed in a bowl shape in a direction closing
the opening to support the supporting portion 21 a 1 of the brazing material 21. It is attached.
[0051]
Further, in the brazing material 52, the side surface parts 52a and 52b and the supporting part
52c are formed in the same manner as the above-mentioned brazing material 51. Similarly, the
side walls 53a and 53b and the support 53c are formed in the brazing material 53 as well.
Further, as in the case of the brazing material 54, side surface portions 54a and 54b and a
support portion 54c are formed.
[0052]
Next, the beams 31, 32, 41 to 43, 61 will be described. First, although the beams 31 and 32 will
be described, since the beams 31 and 32 have the same shape and the same function, the beam
31 will be described as a representative.
[0053]
The beams 31 connect the end portions of the end portions of the wedge members 22 and 23
which are not fixed to the keel portion 20. The beam 31 is installed with the sheet metal
extending in the vertical direction, and the hook-like support parts 31a and 31a are provided at
the upper end part and the hook-like fixing parts 31b and 31b are provided at the lower end
part.
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[0054]
Although the support portions 31a and 31a at the upper end portion support and fix the top
plate 8 as shown in FIG. 10, in the present embodiment, only the one support portion 31a is
configured to fix the top plate 8 . The fixing portions 31 b and 31 b at the lower end portion are
for fixing the keel structure 100 A to the bottom plate 9 using the screw 70 and the like.
[0055]
In the beam 32, similar to the beam 31 described above, supporting portions 32a and 32a and
fixing portions 32b and 32b are formed.
[0056]
Next, the beams 41 to 43 will be described.
Since the beams 41 to 43 have the same shape and the same function, the beam 41 will be
representatively described.
[0057]
The beam 41 is used to connect the end of the end of the rib 21 and the end of the rod 22 which
is not fixed to the keel 20, and is combined with the rod 21, the rib 22 and the keel 20. Thus, a
space for disposing the speaker housing 11 is formed. Both ends of the beam 41 are attached to
the support 21 b 1 of the rib 21 and the end of the rib 22, and the central portion is curved
upward. This is to prevent contact between the screw head and the top plate 8 for fixing the
beam 41 to the rib 21 and the rib 22. The beams 42 and 43 are the same.
[0058]
Subsequently, the beams 61 and 62 will be described. The beams 61 and 62 have substantially
the same shape and function, and the beam 61 connects the end of the rib 51 and the end of the
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rib 52 not fixed to the keel portion 20. Similarly, the beam 62 connects the end of the rib 53 and
the end of the rib 54 which is not fixed to the keel portion 20. In addition, the beam 63 (refer
FIG. 10) provided in the back surface of the amplifier apparatus 10 has a function as a decorative
board stronger than the function as a beam.
[0059]
By providing the ribs 21 to 26 and 51 to 54 and the beams 31, 32, 41 to 43, and 62, the rigidity
of the keel structure 100A against twisting is greatly improved.
[0060]
The thickness of the keel 20 and the ribs, the speaker housing, and the sheet metal of the
amplifier device, which make up the keel structure described above, should be designed
appropriately according to the conditions such as the material, the application, and the
installation location. .
[0061]
Second Embodiment Next, a second embodiment of the present invention will be described with
reference to FIGS.
In the present embodiment, a part of the speaker casing (and the amplifier device) is directly
fixed to the keel portion, and the speaker device is made to function as a base material.
[0062]
FIG. 11 is a top view showing the keel structure of the speaker mounting rack according to the
present embodiment.
FIG. 12 is a top view showing a keel structure of the speaker mounting rack according to the
second embodiment of the present invention. FIG. 13 is a diagram for explaining the keel
structure according to the present embodiment. FIG. 14 is a view showing the main part of the
keel structure according to the present embodiment.
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[0063]
The speaker casings 11 to 13 will be described by taking the speaker casing 12 as an example as
a representative because they have the same shape. As shown in FIGS. 11 and 12, the speaker
housing 12 is provided with mounting portions 12 a and 12 a on both sides of the housing, that
is, on the most rear side of the side. The mounting portions 12a and 12a are provided with
female screws and fixed to the keel portion 20 by screws 70 of male screws.
[0064]
Here, FIG. 13 shows a schematic cross-sectional view of the case where the speaker housing 12
and the amplifier device 10 disposed at the center of the keel structure 100A are fixed to the
keel portion 20. As shown in FIG. The mounting portion 10 a is formed on the most rear side of
the side surface of the amplifier device 10. Then, the mounting portion 12 a of the speaker
housing 12 and the mounting portion 10 a of the amplifier device 10 are respectively fixed to the
front and rear side portions of the keel portion 20 using the screws 70.
[0065]
As described above, by fixing the speaker housings 11 to 13 (and the amplifier device 10)
directly to the keel 20, the rigidity of the keel structure 100B against twisting is greatly
improved, and the structure is simplified and the number of parts is reduced. realizable.
[0066]
<3.
Modifications> [Modifications 1 and 2: attachment example of a keel part and a brazing material]
FIG. 15 is a modification 1 of the embodiment of the present invention, and shows a fixing
method of the keel part and the bridle.
[0067]
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In the present embodiment, the fixed portions 71a and 71a are formed in a bowl shape by
looking at the wedge members 71L and 71R from above, and the fixed portions 71a and 71a and
the side portions 20L and 20R of the keel portion 20 are fixed respectively. I am trying to do it.
Although not shown, each rib is fixed to a bottom plate or the like. Such a structure can prevent
the opening of the keel portion 20 from opening. Further, by reinforcing the U-shaped structural
weak point, the U-shaped structure can be adopted for the keel portion, and the material cost can
be saved as compared with the case of using a non-hollow rod-like member or the like. For
example, in the case of a rectangular cross-sectional shape and a U-shape having an opening, the
material cost is 3/4.
[0068]
FIG. 16 is a modification 2 of the embodiment of the present invention, and shows a method of
fixing the keel portion and the brazing material. In the present embodiment, with respect to the
second modification shown in FIG. 15, upper portions of the left and right ribs are connected
above the opening of the keel portion to form one rib 72. Then, the fixing portions 72a, 72a and
the side portions 20L, 20R of the keel portion 20, which are formed in substantially the same
manner as in the second modification, are respectively fixed. In the present embodiment, the
same effect as that of the first modification can be obtained.
[0069]
[Modification 3: Reinforcement Example of a Knuckle Part] FIG. 17 shows a modification example
3 of the embodiment of the present invention, and shows a reinforcement example of the knuckle
part. In general, in the U-shape, the side portions 20R and 20L of the opening can be easily
opened to the left and right (in the arrow direction). Therefore, the lid 73 is installed at the
opening of the keel portion 20 and fixed to the side portions 20L and 20R, thereby preventing
the opening from opening. In the present embodiment, the same effect as that of the first
modification can be obtained.
[0070]
[Modifications 4 and 5: Reinforcement Example of a Carina Part] FIG. 18A shows a modification
example 4 of the embodiment of the present invention, and shows a reinforcement example of a
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carina part. The present embodiment is a combination of U-shapes, and the side portions are
overlapped by a predetermined amount in a state in which the openings of U-shaped members
81L and 81R of the same shape and size are opposed to each other. The overlapping portions of
the side surfaces are fixed with screws 70 from above and below. In the present embodiment, the
same effect as that of the first modification can be obtained.
[0071]
FIG. 18B is a fifth modification of the embodiment of the present invention, showing an example
of reinforcing a keel portion. The present embodiment is a combination of U-shapes, and the
difference from the fourth modification is the length of the connecting portion of the other Ushaped member 82R than the connecting portion of one of the U-shaped members 82L. Is one
point larger than That is, with the openings of the U-shaped members 82L and 82R facing each
other, the side portions are overlapped by a predetermined amount such that one of the Ushaped members 82L is accommodated in the other U-shaped. And the overlapping part of each
side part is fixed with screw 70 from the upper and lower sides. In the present embodiment, the
same effect as that of the first modification can be obtained.
[0072]
[Modifications 6 and 7: Reinforcement Example of a Knuckle Portion] FIG. 19A shows a
modification example 6 of the embodiment of the present invention, and shows a reinforcement
example of the knuckle portion. FIG. 19B is a seventh modification of the embodiment of the
present invention, showing an example of reinforcing a keel portion. In the present embodiment,
since the keel part needs to satisfy the condition for fixing the brazing material, H steel is
adopted for the keel part. In the example shown in FIG. 19A, the connecting portion of the “H”
character is vertically disposed, and in the example shown in FIG. 19B, the two side portions of
the “H” character are vertically disposed on both sides. According to the present embodiment,
the configuration is simpler than in the third to fifth modifications. The other effects are similar
to those of the first modification.
[0073]
[Modification 8: Reinforcement Example of a Knuckle Portion] FIG. 20 shows a modification
example 8 of the embodiment of the present invention, and shows a reinforcement example of
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the knuckle portion. The present embodiment is configured to include the structures of
Modification 1 (see FIG. 15) and Modification 3 (FIG. 17), and a part thereof is incorporated in
the above-described speaker mounting rack 100. For example, the structures of the support
portion 20a of the keel portion 20 and the support portion 21a1 of the brazing material 21
correspond, and the lid 73 corresponds to the top plate 8.
[0074]
According to the present embodiment, since the supporting portion for supporting and fixing the
lid 73 (top plate) is provided and fixed to the keel portion, the rigidity against the twisting of the
keel structure 100B is greatly improved, and the top plate, Stability is increased due to the
fixation of the keel and spines.
[0075]
[Modification 9: Example of Reinforcement of Knuckles] FIG. 21 is a schematic cross-sectional
view showing an example of reinforcement of the knuckle according to the ninth modification of
the embodiment of the present invention.
In the present embodiment, the spacer 74 is provided in the opening, and the screw 70 is driven
from the side portion so as to penetrate the spacer 74. By doing so, it is possible to prevent the
opening of the U-shaped keel part 85 from opening. [Modification 10: Example of Reinforcement
of Knuckle Portion] FIG. 22 shows Modification Example 10 of the embodiment of the present
invention, in which an example of reinforcement of the knuckle portion is shown. Up to now, the
U-shaped open portion of the keel part (see FIGS. 7, 15, 16, 20, etc.) has been directed upward
for structural reasons, but the open portion may be directed downward. In this case, a rotational
moment (in the direction of the arrow) is generated centering on the connecting portion between
the side portion of the U-shaped keel portion 85 and the connecting portion due to the load. Hit
and lock in the opening. The side portion is restricted in rotational movement by a screw 70 of a
predetermined length, so that the opening can not be closed.
[0076]
Modifications 1 to 10 regarding the reinforcement example of the keel part and the like can be
applied to the first and second embodiments described above.
[0077]
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The embodiments described above are specific examples of the preferred embodiments for
carrying out the present invention, and therefore, various technically preferable limitations are
given.
However, the present invention is not limited to these embodiments, as long as there is no
description to specifically limit the present invention in the above description of the
embodiments. Therefore, for example, the materials used in the above description, the amount
used, the processing time, the processing order, the numerical conditions of each parameter, etc.
are only preferred examples, and the dimensions, shapes and shapes in the respective drawings
used in the description The arrangement relationship and the like are also schematic ones
showing an example of the embodiment.
[0078]
The present invention is not limited to the examples of the embodiments described above, and
various modifications and changes can be made without departing from the scope of the present
invention.
[0079]
It is an external view of the speaker mounting rack which concerns on the 1st Embodiment of
this invention.
It is an external view of the speaker mounting rack of FIG. 1 (state which removed the top plate).
It is a front view of the speaker mounting rack of FIG. It is a perspective view which shows the
internal structure of the shelf by which the keel structure is comprised. It is a top view which
shows the internal structure of the shelf by which the keel structure is comprised. It is a rear
perspective view which shows the internal structure of the shelf by which the keel structure is
comprised. It is a perspective view showing the keel structure of the speaker mounting rack
concerning a 1st embodiment of the present invention. It is a top view which shows the keel
structure of the speaker mounting rack of FIG. It is a XX sectional view perspective view of the
speaker mounting rack of FIG. It is XX sectional drawing of the speaker mounting rack of FIG. It
is a top view of the keel structure of the speaker mounting rack which concerns on the 2nd
Embodiment of this invention. It is a perspective view of the keel structure of the speaker
mounting rack of FIG. It is a cross-sectional schematic diagram with which it uses for description
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of the keel structure which concerns on the 2nd Embodiment of this invention. It is a figure
which shows the principal part of the keel structure concerning the 2nd Embodiment of this
invention. It is a figure where it uses for description of the fixation method (modification 1) of the
keel and the spine according to the first embodiment of the present invention. It is a figure where
it uses for description of the fixation method (modification 2) of the keel and the spine according
to the first embodiment of the present invention. It is sectional drawing which shows the
reinforcement example (modification 3) of the keel which concerns on the 1st Embodiment of
this invention. It is sectional drawing which shows the reinforcement example (modifications 4
and 5) of the keel which concerns on the 1st Embodiment of this invention. It is sectional
drawing which shows the reinforcement example (modifications 6, 7) of the keel which concerns
on the 1st Embodiment of this invention. It is sectional drawing which shows the reinforcement
example (modification 8) of the keel which concerns on the 1st Embodiment of this invention. It
is sectional drawing which shows the reinforcement example (modification 9) of the keel which
concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the
reinforcement example (modification 10) of the keel which concerns on the 1st Embodiment of
this invention.
Explanation of sign
[0080]
Reference Signs List 2, 3 shelf, 4L, 4R side pillar, 5 leg, 7 subwoofer, 8 top plate, 9 bottom plate,
10 amplifier device 11 to 13 speaker housing (speaker device) 11a to 13a ... mounting portion
20: keel portion, 21 to 26, 51 to 54: rib material, 21a, 21b: side portion, 21a1, 21b1 ...
supporting portion, 22a, 23a, 24a, 25a ... fixing portion, 22b, 23b, 24b , 25b ... mounting portion,
22c, 23c, 24c, 25c ... supporting portion, 31, 32, 41-431, 61 ... beams, 31a, 32a ... supporting
portion, 31b, 32b ... fixing portion, 51a ... mounting portion, 51b ... fixed part, 51c ... support part
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