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JP2005005815

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DESCRIPTION JP2005005815
[PROBLEMS] It is also possible to support and miniaturize an object to be supported, such as a
relatively heavy picker device, in a swingable manner. A hemispherical convex spherical surface
15 is integrally formed at the bottom of one baffle 4 of a speaker box 3. The sliding contact
member 16 having a concave spherical surface partially fitted to the surface of the convex
spherical surface 15 is pressed against the convex spherical surface 15 by the outer shell
member 17. The sliding outer shell member 17 has a groove 17a for passing the connecting
portion 16a extending outward in the radial direction from the surface of the sliding contact
member 16, and the tip of the connecting portion 16a is a stand that can be placed on a floor
surface or the like. Connected to 9 The sliding displacement between the convex spherical
surface 15 and the sliding contact member 16 makes it possible to swing the speaker box 3 to
change its direction. [Selected figure] Figure 1
Support device
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
support device which supports a speaker device or the like so as to float from a floor surface or
the like and to change its direction. [0002] Conventionally, in audio reproduction, there has been
a demand for a speaker device capable of reproducing high-quality sound in a wide frequency
band. In many cases, a speaker with a large diameter is attached to a speaker box with a large
volume for low tones, and a speaker with a small diameter is separately provided for high tones
from the one for low tones. The applicant has made it possible to divide the speaker box of
relatively small volume into the first half and the second half, and provide an opening in the first
half, so that the sound radiating portion of the speaker unit with a relatively small diameter and
full range via the buffer material. The speaker system which connects and supports a speaker
unit inside a speaker box is disclosed (for example, refer to patent documents 1). The speaker
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unit is directly supported by a stand whose tip is inserted into the interior of the speaker box
from the connection portion between the front and rear of the speaker box, and the vibration
generated in the drive unit of the speaker unit is less likely to be transmitted to the speaker box .
In the speaker system as disclosed in Patent Document 1, the tip of the stand outside the speaker
box is inserted into the speaker box to support the speaker unit. In the part where the stand is
inserted into the speaker box, the sound output inside the speaker box is prevented from leaking
to the outside by using a shock absorbing material or the like. Can not. When reproducing the
high-pitched sound side, the directivity of the sound output radiated from the speaker is strong.
It is preferable to direct the speaker system to the position of the listener when stereo
reproduction is to be performed with the speaker system placed at spatially separated positions
such as left and right. FIG. 10 schematically shows a support structure 50 that allows for
swinging. The spherical body 52 is mounted on the object to be supported 51, and the spherical
body 52 is covered with a shell member 54 having a groove through which a shaft 53 extending
radially outward from a part thereof is fixed and fixed with a bolt 55. With the bolt 55 slightly
loosened, the support structure 50 enables angular displacement about the axis 53 and pivoting
displacement of the axis 53 along the groove. Once the shaft 53 is in the desired orientation, the
bolt 55 can be tightened to fix the orientation of the shaft 53. Patent Document 1: Japanese
Patent Application Laid-Open No. 2001-285974 (FIG. 1) SUMMARY OF THE INVENTION When a
support structure 50 as shown in FIG. 10 is used for a speaker system, It is necessary to store
approximately half of the area on the side of the speaker box that is the support object 51.
Because the speaker system is relatively small but heavy, the diameter of the sphere 52 must be
increased to some extent. When the sphere 52 becomes large, the volume of the speaker box
decreases to accommodate the half. FIG. 11 shows a state in which most of the spheres 52 are
taken out of the object to be supported 51 in order to avoid a decrease in the volume of the
speaker box. However, the contact area between the spherical body 52 and the object to be
supported 51 is reduced, which tends to cause instability. In addition, since most of the spheres
52 come out of the pointing object 51, the height h of the support structure is increased. An
object of the present invention is to provide a supporting device capable of oscillating and
supporting a support object such as a relatively heavy speaker device so as to be miniaturized.
SUMMARY OF THE INVENTION The present invention is a support device for pivotably
supporting a support object, wherein a partial spherical surface is projected on a pivot portion of
the support object. And a concave spherical surface partially fitted to the spherical surface of the
convex spherical member inward in the radial direction, a convex spherical surface is formed
outward in the radial direction, and the concave spherical surface is a convex spherical member
A sliding member capable of sliding displacement along the spherical surface, and an outer shell
covering the spherical surface of the spherical member via the sliding member, and the sliding
member is guided to slide along the spherical surface of the convex spherical member A recess is
provided to connect the convex spherical surface of the sliding member to the outside, and is
fastened to the support object around the convex surface of the convex spherical member, and
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the sliding member and the convex spherical member are fitted with a predetermined fastening
force A sliding member and an outer shell member capable of fixing the joint position; A
supporting device which comprises a support member for supporting the objects to be supported
via the spherical member. According to the present invention, the supporting device for pivotably
supporting the object to be supported includes a convex spherical member, a sliding member, an
outer shell member, and a supporting member. The convex spherical member is provided on the
pivoting portion of the object to be supported so that a partial spherical surface protrudes, and
along the spherical surface, the sliding member is capable of sliding displacement. The sliding
member has a concave spherical surface partially fitted to the spherical surface of the convex
spherical member inward in the radial direction, and has a convex spherical surface outward in
the radial direction. The outer shell member serves as an outer shell covering the spherical
surface of the spherical member through the sliding member, and guides the sliding member to
slide along the spherical surface of the convex spherical member, and the convex spherical
surface of the sliding member to the outside A connectable missing part is provided. The support
member is connected to the sliding member through the lack portion of the shell member, and
supports the support object through the sliding member and the convex spherical member.
Since the outer shell member is provided with the lack portion, when the sliding member
connected to the support member through the lack portion slides along the spherical surface of
the convex spherical member, the support member and the support object are formed. A rocking
displacement is possible which changes the angle. In the part that connects the support member
and the sliding member, angular displacement around the axis is also possible, and a pivoting
structure that enables swinging of the object to be supported relative to the support member by
pivoting displacement and angular displacement is realized can do. Since the support object may
be provided with a convex spherical member from which a partial spherical surface protrudes,
the volume of the support object is not reduced, and the amount of protrusion to the outside is
also small, which is necessary for pivoting The shape can be miniaturized. Further, in the present
invention, the support member includes: a connecting portion connected to the sliding member;
and a plurality of inclined portions which are separated in the radial direction from the axis as
separating from the connecting portion along a predetermined axial direction. A distal end of
each leg having a bottom portion which can be simultaneously placed in a plane perpendicular to
the axis, and a through hole provided in a direction parallel to the axis near the bottom portion; It
is characterized by According to the present invention, when the bottom of the plurality of legs is
placed on the floor surface, the support member has an axis perpendicular to the floor surface
and supports the support object from the floor surface by floating at the connecting portion. be
able to. In the vicinity of the bottom of the leg portion, a through hole is provided in a direction
parallel to the axis, so that the leg portion can be fixed by inserting a bolt or the like into the
through hole. Furthermore, since the leg can be fixed using the through hole, the bottom of the
leg can be fixed to a ceiling, a side wall or the like to support the support object. Further, in the
present invention, the convex spherical member is formed integrally with at least a part of the
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object to be supported. According to the present invention, since the convex spherical member is
integrally formed with at least a part of the object to be supported, the number of parts can be
reduced and the assembly of the pivot portion can be facilitated. Further, in the present
invention, the lacked portion of the outer shell member has a shape extending along the
spherical surface of the convex spherical member, and the convex spherical member is located at
a position away from the missing portion at the missing portion. It is characterized by having
parallel grooves. According to the present invention, since the lack portion of the outer shell
member has a shape extending along the spherical surface of the convex spherical member, the
connection between the sliding member and the support member is displaced along the lack
portion. The support member can be pivotally displaced relative to the object to be supported,
and angular displacement around the axis of the connecting portion is also possible.
Since the convex spherical member has the groove parallel to the lacked part at a position away
from the lacked part, the groove does not lose the smoothness of the sliding part even if the
support member is swung relative to the object to be supported Can be By forming the groove in
the convex spherical member, when forming the convex spherical member by molding of a
synthetic resin material, casting of a metal material, etc., it is possible to prevent sink marks and
to make the sliding surface smooth. . Further, in the present invention, the object to be supported
is a speaker device. According to the present invention, the orientation of the speaker device can
be easily changed by a relatively small pivot mechanism, and the reduction of the internal
volume of the speaker box can be avoided. BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a schematic side sectional view of using a supporting device according to an
embodiment of the present invention for a speaker device 1. The speaker unit 2 that performs
electroacoustic conversion by the speaker device 1 is generally accommodated in an oval speaker
box 3. The speaker box 3 can be divided into a baffle 4 which is a front half portion and a box 5
which is a rear half portion before and after the joint portion 3a. The baffle 4 is provided with an
opening 4 a. The drive unit 6 of the speaker unit 2 is supported in the space inside the speaker
box 3, and the acoustic radiation unit 7 of the speaker unit is connected to the opening 4a of the
baffle 4 of the speaker box 3 via the buffer material 8 such as felt or rubber. . The stand 9 which
is a supporting device is provided with a pivot mechanism at the bottom of the speaker box 3 to
enable swinging of the speaker box 3. A weight 10 is connected to the rear side of the drive unit
6 of the speaker unit 2 in the speaker box 3. The weight 10 includes a main body 11 having a
mass that can virtually act as a ground for acoustic vibration, and a plurality of supports 12 b.
The mass of the main body 11 is approximately the same as that of the speaker unit 2 and
functions as a ground anchor. The support portion 12 b has a shape that radially extends from
the main body portion 11 toward the connection portion 3 a of the baffle 4 of the speaker box 3
and the box 5. In the connection portion 3a between the baffle 4 and the box 5 of the speaker
box 3, the support portion 12 of the weight 10 is sandwiched by buffer materials 13 such as felt,
and fixed by fixing members such as bolts 14 respectively. The speaker box 3 is formed by
molding a synthetic resin material such as, for example, foamed polypropylene (PP). A
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hemispherical convex spherical surface 15 is integrally formed on one side of the speaker box 3,
for example, the bottom of the baffle 4.
A sliding contact member 16 having a concave spherical surface partially fitted to the surface of
the convex spherical surface 15 and capable of being displaced by sliding contact with the
convex spherical surface 15 is pressed by the outer shell member 17 against the convex
spherical surface 15. The sliding contact member 16 is formed of a metal material such as iron.
In the outer shell member 17 formed by die-casting an aluminum material or the like, a groove
17a for passing a connecting portion 16a extending outward in the radial direction from the
surface of the sliding contact member 16 is formed as a missing portion. The tip of the
connection portion 16a is connected to a stand 9 that can be placed on a floor surface or the like.
If the bottom of the stand 9 is placed on a floor surface or the like, the sliding displacement
between the convex spherical surface 15 covered by the outer shell member 17 and the sliding
contact member 16 causes the speaker box 3 to swing. The pivoting mechanism 18 is constituted
by the convex spherical surface 15, the sliding contact member 16 and the outer shell member
17. In the pivot mechanism 18, the swing angle of the speaker box 3 with respect to the stand 9
can be fixed by tightening the shell member 17 with the bolt 18a. The stand 9 of the present
embodiment is a support device that pivotally supports the speaker device 1 as a support object,
and is a part of the speaker box 3 that is a pivot portion of the speaker device 1. It includes a
convex spherical surface 15 as a convex spherical surface member provided so that a partial
spherical surface protrudes, a sliding member 16, an outer shell member 17, and a leg 30. The
sliding member 16 is formed with a concave spherical surface partially fitted to the convex
spherical surface 15 inward in the radial direction, a convex spherical surface is formed outward
in the radial direction, and the concave spherical surface is the spherical surface of the convex
spherical member Sliding displacement is possible along. The outer shell member 17 serves as an
outer shell covering the convex spherical surface 15 via the sliding member 16, guides the
sliding member 16 to slide along the convex spherical surface 15, and the convex spherical
surface of the sliding member 16 is externally There is provided a groove 17a which is a missing
part connectable to the. The leg 30 is a support member which is connected to the sliding
member 17 through the groove 17 a of the outer shell member 17 and supports the speaker
device 1 through the sliding member 16 and the convex spherical surface 15. The convex
spherical surface 15 is integrally formed with the baffle 4 of the speaker box 3 which is at least a
part of the speaker device 1 as a support object. Although a convex spherical member can be
used as a separate member, since it is integrally formed with at least a part of the speaker box 3
as the convex spherical surface 15, the number of parts can be reduced and the assembly of the
pivot mechanism 18 can be facilitated. it can. The convex spherical surface 15 can also be
formed on the box 5 side which is the second half of the speaker box 3.
If the convex spherical surface 15 is formed by both the baffle 4 and the box 5, a step may be
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generated, which may impair the smooth sliding displacement of the sliding member 16, so that
it is integrally formed with one of the baffle 4 or the box 5. Doing so is advantageous for a
smooth swinging motion. The leg 30 as a support member is connected to the sliding member 16
via the groove 17 a of the outer shell member 17, and supports the speaker device 1 via the
sliding member 16 and the convex spherical surface 15. The outer shell member 17 is provided
with the groove 17 a, so when the sliding member 16 coupled to the leg 30 via the groove 17 a
is slidingly displaced along the convex spherical surface 15, the leg 30 and the speaker device 1
are It is possible to make a swing displacement that changes the angle formed by The connecting
portion 16a connecting the leg portion 30 and the sliding member 16 is also capable of angular
displacement around the axis, and enables pivoting of the speaker device 1 with respect to the
stand 9 by pivoting displacement and angular displacement. The support mechanism 18 can be
realized. The speaker device 1 only needs to be provided with a convex spherical surface 15 from
which a partial spherical surface protrudes, so the volume of the speaker box 3 is not reduced,
and the amount of protrusion to the outside is also small, requiring pivoting The shape can be
miniaturized. The leg 30 has a bottom that can simultaneously contact a plane perpendicular to
the axis 9 a of the stand 9. The net 19 is attachable to and detachable from the opening 4 a of
the baffle 4 of the speaker box 3, and if the net 19 is attached, the diaphragm or the like of the
sound radiating portion 7 of the speaker unit 2 can not be touched with a fingertip. Can be
protected. The net 19 is inserted and fixed together with the rubber ring 20 in an annular groove
4b provided around the opening 4a, and the net 19 can also be removed by removing the rubber
ring 20. A hole 21 is provided on the back side of the speaker box 3, and a terminal 22 for
electrically driving the speaker unit 2 is attached. At the tip of the support portion 12 of the
weight 10, a through hole 23 for inserting the bolt 14 is formed. The inner diameter of the
through hole 23 is larger than the outer diameter of the threaded portion of the bolt 14 and the
support portion 12 and the bolt 14 do not make direct contact with each other. As described
later, the plurality of support portions 12 are formed to have different shapes. The weight 10 is
provided with a TOP display 24 indicating the mounting direction. Note that a bass reflex port 25
can be provided on the back side of the speaker box 3, and the loudspeaker box 3 can be
operated as a bass reflex cabinet.
The periphery of the bass reflex port 25 may be covered with a sound absorbing material 26.
Instead of providing the bass reflex port 25 in the speaker box 3, a closed cabinet can also be
provided. A sound absorbing material or the like can also be placed inside the speaker box 3. FIG.
2, FIG. 3, FIG. 4 and FIG. 5 respectively show the speaker device 1 of FIG. 1 in a side view, a front
view, a back view and a plan view. FIG. 1 corresponds to a cross-sectional view taken along the
line I-I of FIG. It is assumed that the diameter of the acoustic radiation unit 7 of the speaker unit
2 housed in the speaker box 3 is, for example, about 70 mm. The height H from the top of the
speaker box 3 to the bottom of the stand 9 is about 160 mm, the depth D of the speaker box 3
including the net 19 is also about 160 mm, and the width W of the speaker box 3 is about 120
mm. The bolt 14 for fixing the tip of the support portion 12 of the weight 10 is inserted into the
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back of the hole 21 formed from the box 5 of the speaker unit 3 to the vicinity of the connection
portion with the baffle 4 and the hole provided in the baffle 4 is female screw Use as a contract.
A terminal 22 for electrically connecting to the speaker unit 2 is also provided on the back side
of the box 5 of the speaker box 3. As described above, in the speaker device 1, the drive unit 6 of
the speaker unit 2 is supported in the speaker box 3 that can be divided into the first half and the
second half, and the sound radiation unit 7 of the speaker unit 2 is The buffer material 8 is
connected to the opening 4 a of the baffle 4 which is the front half portion. The vibration of the
speaker unit 2 itself generated by the reaction force causing the speaker unit 2 to propagate the
sound output to the ambient air is attenuated by the buffer material 8 and is hardly transmitted
to the speaker box 3. Inside the speaker box 3, the drive unit 6 of the speaker unit 2 is connected
to the main body 11 of the weight 10. Since the main body 11 of the weight 10 virtually has a
large mass that can act as a ground for acoustic vibration, the acoustic radiation portion 7 of the
speaker unit 2 has a sufficient acoustic impedance compared to the air that propagates the
acoustic output. It becomes high and hardly vibrates even if it receives the reaction force
accompanying the radiation of the acoustic output to the air. From the main body 11 of the
weight 10, a plurality of support portions 12 having a radially extending shape extend toward
the connecting portion 3 a between the baffle 4 of the speaker box 3 and the box 5 which is the
rear half portion. Since the support portion 12 of the weight 10 is fixed at the connection portion
3 a of the speaker box 3, the weight 10 can be supported inside the speaker box 3.
The drive portion 6 of the speaker unit 2 is connected to the main body portion 11 of the weight
10, and vibration is not transmitted to the drive portion 6 of the speaker unit 2 by the main body
portion 11 of the weight 10 acting as virtual ground. The speaker box 3 can be supported inside.
Even when using the stand 9 or the like to separate the speaker box 3 from the floor or wall of a
room where sound reproduction is performed, it is necessary to insert the stand 9 into the
speaker box 3 and support the speaker unit 2 directly. Alternatively, it is possible to pivot
between the stand 9 and the speaker box 3 by means of the pivot mechanism 18 to perform
swinging and the like. FIG. 6 is a front view of a weight 10 used for the speaker device 1 of FIG.
The weight 10 is formed, for example, by die-casting using zinc as a material, and has a main
body 11 having a large mass, and a plurality of, for example, three supporting portions 12a, 12b,
12c. The main body portion 11 has a generally frusto-conical shape, and has a boss 11 a
protruding along the axis at the center on the bottom side. The boss 11 a is coupled to the drive
unit 6 of the speaker unit 2 as shown in FIG. 1. From the outer peripheral portion on the bottom
side, three support portions 12a, 12b and 12c respectively project radially outward, and center
lines 10a, 10b and 10c of the respective support portions 12a, 12b and 12c are the bottom
surface of the main body portion 11. Are equally divided into three in the circumferential
direction. The three support portions 12a, 12b, and 12c are formed such that widths Wa, Wb,
and Wc of portions protruding in the radial direction from the bottom surface of the main body
portion 11 are different from each other. As shown in FIG. 1, a through hole 23 for inserting and
fixing a bolt 14 as a fixing member is provided at the tip of each of the support portions 12a, 12b
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and 12c. The shape of the through hole 23 and the periphery thereof is common to the three
support portions 12a, 12b and 12c, and only the widths Wa, Wb and Wc of the portions where
the respective support portions 12a, 12b and 12c protrude from the bottom surface of the main
body portion 11 Is different. The center of the through hole 23 is located on the circumference of
about 45 mm in radius from the center of the main body portion 11. If the shapes of the plurality
of support portions 12a, 12b, and 12c are the same, resonance occurs at the same frequency,
and there is a possibility that the sound quality of reproduced sound as a speaker may be
impaired as extra resonance. In the weight 10 used for the speaker device 1, the shapes are made
different in order to make the resonance frequencies of the plurality of support portions 12a,
12b, 12c different. Since the plurality of support portions 12a, 12b and 12c of the weight 10
have different shapes, the frequency of the vibration at which the support portions 12a, 12b and
12c resonate deviates, so that the vibration does not increase at a specific frequency. it can.
As the display related to the difference in the shape of the support portions 12a, 12b, 12c, for
example, since the support portion 12a to be fixed near the top of the speaker box 3 is provided
with the TOP display 24, the difference in shape is hardly visible. Also, the fixing direction of the
weight 10 in the speaker box 3 can be made not to be wrong at the time of assembling work as
the speaker device 1 or the like. For example, in the case where two-channel stereo reproduction
is performed by arranging a pair of speaker devices on the left and right, it is possible to prevent
the orientation of the weight in the speaker device from being different on the left and right. As
shown in FIG. 6, the plurality of support portions 12 a, 12 b, 12 c of the weight 10 are formed to
extend from the outer periphery of the main body portion 11 at equal intervals in the
circumferential direction. The support portions 12a, 12b, and 12c have the same shape in the
portion fixed by the bolt 14 at the connection portion of the speaker box 3, and the widths Wa,
Wb, and Wc of the portions extending from the main body portion 11 are different. This width is
different by a larger value than the variation of the forming dimension, for example, 0.5 mm at a
time, the width Wa of the support 12a is 7.4 mm, the width Wb of the support 12b is 6.9 mm,
and the width Wc of the support 12c is It can be 6.4 mm. The different degree is several percent
to several tens percent. The supports 12a, 12b, and 12c need to have strength to support the
heavy main body 11, and can not be so thin that the strength is insufficient. Also, if it is thick, the
volume of the space in the speaker box 3 is reduced, so it is not preferable to make it too thick.
The plurality of support portions 12a, 12b and 12c are extended from the main body portion 11
of the weight 10 at substantially the same shape at equal intervals in the circumferential
direction, and the shapes of the portions extending from the main body portion 11 are made
different. The frequency can be shifted. At the tip of the support portions 12a, 12b and 12c, at
the connection portion between the baffle 4 which is the front half of the speaker box 3 and the
box 5 which is the rear half, the portion fixed by the bolt 14 can be the same shape. The bolt 14
can be of the same standard. FIG. 7 shows the structure of the stand 9 in plan view. The leg 30 of
the stand 3 has three legs 31, 32, 33 so as to be stable. Each leg 31, 32, 33 is arranged such that
the bottom 34, 35, 36 of the tip forms an isosceles triangle. That is, the two legs 31, 32 have the
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same length, and the other legs 33 have a short length. This is a design consideration, and since
angular displacement around the axis is possible in the connecting portion 16a of the sliding
member 16, the orientation of the isosceles triangle formed by the bottom portions 34, 35, 36
can be oriented in any way. is there.
The three legs 31, 32, 33 can also be of equal length such that the bottoms 34, 35, 36 form an
equilateral triangle. It is also possible to make all the lengths of the legs 31, 32, 33 different. In
the vicinity of the bottoms 34, 35, 36, through holes 37, 38, 39 are respectively provided. FIG. 8
shows a state where the stand 9 is attached to the ceiling using the through holes 37, 38, 39
provided in the legs 31, 32, 33. When the bolt 40 or the like is inserted into the through holes
37, 38, 39, the stand 9 can be easily fixed to a ceiling, a side wall or the like. The stand 9 can also
be fixed to the floor surface. However, if the stand 9 is formed by zinc die casting or the like, it
has its own weight, and the weight of the speaker device 1 is large. Therefore, the use of the
speaker device 1 can be supported simply by placing it on a floor surface. Fixing to the ceiling or
side wall needs to be securely performed using a bolt 40 or the like. The stand 9 has a
connecting portion 41 connected to the sliding member 16 and a plurality of legs 31 inclined
radially away from the axis 9a as separating from the connecting portion 41 along the direction
of the predetermined axis 9a. And 32 and 33. The tips of the legs 31, 32, 33 are provided in a
direction parallel to the axis 9a near the bottoms 34, 35, 36 and the bottoms 34, 35, 36, which
can be simultaneously mounted on a plane perpendicular to the axis 9a. It has through holes 37,
38 and 39. When the bottoms 34, 35, 36 of the plurality of legs 31, 32, 33 are placed on the
floor surface, the axis 9a of the leg 9 of the stand 9 becomes perpendicular to the floor surface.
The object to be supported can be supported floating on the floor surface. Since through holes
37, 38 and 39 are provided in the direction parallel to the axis 9a near the bottoms 34, 35 and
36 of the leg 30, the bolt 40 or the like is inserted through the through holes 37, 38 and 39. The
legs 30 can also be fixed. Furthermore, since the leg portion 30 can be fixed using the through
holes 37, 38, 39, it can be fixed to a ceiling, a side wall or the like to support the support object.
FIG. 9 shows a cross-sectional configuration of the pivot mechanism 18 of the present
embodiment. As described above, since the convex spherical surface 15 is integrally formed with
the baffle 4, the grooves 15a and 15b parallel to the groove 17a of the outer shell member 17
are formed at positions away from the position of the groove 17a. The groove 17a of the outer
shell member 17 has a shape extending along the convex spherical surface 15. Therefore, when
the connecting portion 16a of the sliding member 17 and the stand 9 is displaced along the
groove 17a, the stand 9 is against the object to be supported Can be swung and displaced, and
angular displacement around the axis of the connecting portion 16a is also possible.
Since the convex spherical surface 15 has the grooves 15a and 15b parallel to the groove 17a at
a position away from the groove 17a, the grooves 15a and 15b are smooth in the sliding portion
even if the stand 9 swings with respect to the support target It is possible not to lose weight. By
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forming the grooves 15a and 15b in the convex spherical surface 15, when forming the convex
spherical surface 15 by molding of a synthetic resin material, casting of a metal material, etc., it
is possible to prevent sinks and to make the sliding surface smooth. be able to. Although the case
of using the speaker device 1 as the support object is described in the present embodiment, the
present invention can be applied without being limited to the speaker device 1. For example, the
present invention can be similarly applied to the support of various devices such as a lighting
device, an air conditioner, and an imaging device, and the support of a mere table. As described
above, according to the present invention, the sliding member is provided along the spherical
surface of the convex spherical member provided so that a partial spherical surface protrudes in
the pivoting portion of the object to be supported. Slidingly displacing the support member
connected to the sliding member through the lacked portion of the shell member to allow swing
displacement and angular displacement to swing the supported object relative to the support
member. Can. Since the support object may be provided with a convex spherical member from
which a partial spherical surface protrudes, the volume of the support object is not reduced, and
the amount of protrusion to the outside is also small, which is necessary for pivoting The shape
can be miniaturized. Further, according to the present invention, since the leg can be fixed using
the through hole provided in the vicinity of the bottom of the leg of the support member, the
bottom of the leg can be fixed to a ceiling, a side wall or the like. It is also possible to support an
object to be supported. Further, according to the present invention, since the convex spherical
member is integrally formed with at least a part of the object to be supported, the number of
parts can be reduced and the assembly of the pivot portion can be facilitated. Further, according
to the present invention, by providing the groove in the convex spherical member, it is possible
to prevent sink marks when forming the convex spherical member by molding a synthetic resin
material, casting a metal material, or the like. The sliding surface can be made smooth. Further,
according to the present invention, the orientation of the speaker device can be easily changed
by a relatively small pivot mechanism, and a decrease in the internal volume of the speaker box
can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view
showing a schematic configuration of a speaker device 1 according to an embodiment of the
present invention. FIG. 2 is a side view of the speaker device 1 of FIG. 1;
3 is a front view of the speaker device 1 of FIG. 1; 4 is a rear view of the speaker device 1 of FIG.
1; FIG. 5 is a plan view of the speaker device 1 of FIG. 1; 6 is a front view of the weight 10 of FIG.
1; 7 is a plan view of the stand 9 of FIG. 1; 8 is a side view showing how the speaker device 1 of
FIG. 1 is attached to a ceiling. FIG. 9 is a front cross-sectional view of the pivot mechanism 18 of
FIG. 1; FIG. 10 is a partial cross-sectional view of a conventional pivotable support device. FIG. 11
is a partial cross-sectional view of a conventional pivotable support device. [Description of the
code] 1 speaker device 2 speaker unit 3 speaker box 3a connection portion 4 baffle 5 box 6 drive
portion 7 acoustic radiation portion 8, 13 shock absorbing material 9 stand 9a axis line 10
weight 11 main body portion 12, 12a, 12b, 12c Support portion 14 bolt 16a, 41 Connection
portion 18 Pivot mechanism 14, 18a, 40 Bolt 30 Leg 31, 32, 33 Leg 34, 35, 36 Bottom 37, 38,
03-05-2019
10
39 Through hole
03-05-2019
11
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