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JP2006094309

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DESCRIPTION JP2006094309
PROBLEM TO BE SOLVED: To provide a "movable speaker device" which can be easily attached
to a predetermined installation surface and suitable for miniaturization. SOLUTION: A movable
speaker comprising a speaker main body 1 in which a speaker unit 3 is rotatably held in one
direction on a support 5, and a bracket 2 for mounting the speaker main body 1 on a
predetermined installation surface In the apparatus, a guide hole 10 having a plurality of notches
10a is formed on the outer edge of the arc-shaped circumferential surface 10b on the bottom
surface of the support 5, and a plurality of peaks 11a and valleys on the outside of the arcshaped circumferential surface 10b. 11b is alternately formed in an arc shape with the notch 10a
as a base end, and a plurality of bayonet claws 2a are formed in the bracket 2, and the notch 10a
of the guide hole 10 is a bayonet The bayonet claw 2a is resiliently brought into contact with the
concavo-convex portion 11 from the notch 10a by rotating the speaker main body 1 after
inserting the claw 2a. [Selected figure] Figure 1
Mobile speaker device
[0001]
The present invention relates to a movable speaker device suitable for use in a car audio system
or the like, and more particularly to a movable speaker device of a type in which a speaker body
is rotatably held on an installation surface via a bracket. .
[0002]
In the on-vehicle audio system, low-pitched and high-pitched speakers may be placed at
appropriate positions in the car to realize a high-quality sound space. Among these, high-pitched
speakers are located at the corners of dashboards, etc. Because they are often arranged, those
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having a structure capable of changing the sound output direction are widely adopted.
[0003]
Heretofore, as an example of a speaker device having a structure capable of changing the output
direction of sound in this manner, a support elastically biased by a spring is provided inside the
lower bracket opened at the upper end, and the upper end of the support is The central portion
of the bottom of the speaker body is pivotally supported, and the upper bracket having a
spherical rotation surface is screwed to the open end of the lower bracket, so that the speaker
body can be pivoted between the support and the rotation surface of the upper bracket There is
known a held movable speaker device (see, for example, Patent Document 1).
In such a known movable speaker device, the lower bracket is attached to an arbitrary
installation surface in the vehicle using fixing means such as screws, and in this attachment state,
the user rotates the speaker body on the rotating surface of the upper bracket. By rotating along,
the output direction of the sound can be changed to the direction preferred by the user.
[0004]
Further, as another conventional example, a movable portion is disposed on a base provided with
a spherical body, and the movable portion is rotatably supported centering on the spherical body,
and a bracket abutting on a part of the spherical body There is known a movable speaker device
in which the speaker body is fixed to the upper end of the movable portion and the speaker body
is fixed to the locking claw of the bracket (see, for example, Patent Document 2).
In such a known movable speaker device, the base is attached to an arbitrary installation surface
in the vehicle using fixing means such as screws, and when the user rotates the speaker body in
this attached state, Since the speaker body, the bracket, and the movable portion rotate around
the spherical body, the sound output direction can be changed to the direction preferred by the
user. Japanese Patent Application Laid-Open No. 10-271588 (Page 2, FIG. 12) Japanese Patent
Application Laid-Open No. 2003-9273 (Page 3-4, FIG. 1)
[0005]
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However, in the former movable type speaker device of the prior art described above, since the
speaker main body is rotatably held by the resiliently biased support and the rotation surface of
the upper bracket, the speaker main body can be smoothly rotated. The mobile speaker device is
mounted on the installation surface because it is difficult to move and the upper bracket must be
screwed to the open end of the lower bracket while elastically supporting the center of the
bottom of the speaker main body. Sometimes there is a problem that the attitude of the speaker
body becomes unstable and the workability is deteriorated. In the latter movable speaker device,
a movable portion rotatable around a spherical body is supported on a base fixed to the
installation surface, and the speaker main body is fixed to the movable portion via a bracket.
Since the speaker body, the bracket, and the movable portion can be rotated with respect to the
base, the number of parts of the mechanism for rotatably holding the speaker body is increased,
and the miniaturization of the entire movable speaker device is also hindered. was there.
[0006]
The present invention has been made in view of the above-described circumstances of the prior
art, and an object thereof is to provide a movable speaker device which can be easily attached to
an installation surface and which is suitable for downsizing.
[0007]
According to the present invention, the speaker body can be attached to the bracket by using the
bayonet mount method, and a guide hole having an arc-shaped circumferential surface and a
notch is formed on the bottom surface of the speaker body. The uneven part which made the
peak part and the valley part continued alternately was formed in circular arc shape by making
the notch part into a base end.
Then, after inserting the notch into the bayonet claw in a state where the bracket is fixed to the
installation surface, the speaker main body is turned to shift the bayonet claw to the arc-like
circumferential surface and elastically contact the uneven portion. The speaker body can be
adjusted in any direction according to the amount of rotation.
[0008]
According to the movable speaker device of the present invention, the bayonet claw of the
bracket is inserted into the notched portion formed on the bottom surface of the speaker main
body with the bracket fixed to the installation surface, and then the speaker main body is rotated
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to operate the bayonet Since the speaker body can be adjusted in any direction by resiliently
bringing the claws into contact with the concavo-convex portion, not only installation work on
the installation surface is simplified, but mounting on the installation surface only with the
speaker body and the bracket Since both direction adjustment can be realized at the same time,
the number of parts can be reduced and miniaturization can be achieved.
[0009]
The present invention comprises a speaker main body for outputting sound, and a bracket fixed
to an installation surface, and in the movable speaker device in which the speaker main body is
rotatably held by the bracket, the bottom surface of the speaker main body A guide hole having a
plurality of notches is formed at the outer edge of the arc-shaped circumferential surface, and the
uneven portion in which a plurality of peaks and valleys are alternately continued to the outside
of the arc-shaped circumferential surface is the notch The bracket is formed in an arc shape with
the base end as a base end, and a plurality of bayonet claws are formed on the bracket, and the
notch portion is inserted into the bayonet claw and then the speaker main body is rotated. The
bayonet claw is configured to shift to the circular arc-like circumferential surface and be in
resilient contact with the uneven portion.
[0010]
In the movable speaker device configured in this manner, a bracket having a plurality of bayonet
claws is fixed to a predetermined installation surface, and in this state, the notch formed on the
bottom surface of the speaker body is inserted into the bayonet claw of the bracket After that,
when the speaker main body is turned, the bayonet claws shift from the notch to the arc-like
circumferential surface while being in elastic contact with the peaks and valleys of the concavoconvex part, so adjust the speaker main body in any direction. The angle of adjustment of the
speaker body can be recognized with a click feeling.
Therefore, the movable speaker device can be easily attached to a predetermined installation
surface, and both attachment to the installation surface and orientation adjustment can be
realized simultaneously with only the speaker body and the bracket, thus reducing the number of
parts. Thus, miniaturization can be achieved.
[0011]
In the above configuration, the notches are formed on both ends in the circumferential direction
of the concavo-convex part, and the height dimension of the peak located on both ends of the
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concavo-convex part is set larger than that of the other peaks. By doing this, it is possible to
prevent the bayonet claws from coming off carelessly from the uneven portion, which is
preferable.
[0012]
Further, in the above configuration, the guide hole has an arc-shaped guide surface different
from the arc-shaped circumferential surface, and the bracket contacts the arc-shaped guide
surface to guide the rotation of the speaker main body. If the restriction piece is formed, the
restriction piece can prevent the rotation center axis of the speaker main body from being
displaced, which is preferable.
[0013]
In the above configuration, the bracket is formed with a plurality of elastic tongues resiliently
contacting the bottom surface of the speaker body, and the bayonet claws are resiliently
contacted to the uneven portion by the resilient force of the elastic tongues. Since the springiness
of the direction which absorbs the difference in distance between the peak part and the valley
part of the concavo-convex part is given to the bayonet claw, the speaker main body can be
smoothly rotated, which is preferable.
[0014]
In the above configuration, although the configuration of the speaker body is not particularly
limited, the speaker body includes a support for rotatably supporting the speaker unit in one
direction, and the rotation direction of the speaker unit is the speaker. Since the speaker unit can
be turned in the in-plane direction orthogonal to each other after using the speaker main body
having a simple configuration when substantially orthogonal to the rotation surface of the main
body, the sound output direction It is preferable because it can be freely adjusted.
[0015]
An embodiment will be described with reference to the drawings. FIG. 1 is an exploded
perspective view of a movable speaker device according to the embodiment, FIG. 2 is a
perspective view showing a mounting state of the movable speaker device on an installation
surface, and FIG. FIG. 4 is a cross-sectional view of a support provided on the movable speaker
device, and FIG. 5 is an explanatory view of an uneven portion provided on the support. 6 is a
plan view of a bracket provided on the movable speaker device, and FIG. 7 is a cross-sectional
view taken along the line VII-VII in FIG.
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[0016]
As shown in FIGS. 1 and 2, the movable speaker device according to the present embodiment is
roughly divided into a speaker main body 1 capable of outputting sound and a bracket 2 as a
mounting bracket of the speaker main body 1, which will be described later. Thus, the speaker
body 1 is rotatably mounted on a predetermined installation surface in the vehicle via the
bracket 2.
[0017]
First, the configuration of the speaker main body 1 will be described based on FIGS. 3 to 5. The
speaker main body 1 includes a speaker unit 3 incorporating speaker components (not shown)
such as a magnetic circuit and a voice coil, and the speaker unit 3. , The support 5 rotatably
supporting the pivoting member 4, the shielding member 6 disposed inside the pivoting member
4, and the inside of the pivoting member 4 , And a coil spring 8 wound around the mounting
screw 7.
[0018]
The speaker unit 3 has a cylindrical frame 9 molded of a synthetic resin, and although not
shown, a plurality of locking claws are integrally formed on the lower outer peripheral surface of
the frame 9.
Further, the pivoting member 4 is formed of synthetic resin into a hemispherical body having a
hollow structure as a whole, and a long hole 4 a is formed at a position passing through the
center of the inner bottom surface of the pivoting member 4.
Although not shown, a plurality of locking grooves which can be engaged with and removed from
the locking claws of the frame 9 are formed at the open end of the pivoting member 4, and the
speaker using these locking claws and locking grooves The unit 3 is detachably engaged with
and held by the open end of the pivoting member 4.
[0019]
The support 5 is formed of a synthetic resin, and the hemispherical portion 5 a and the base 5 b
are integrally formed on the support 5.
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The hemispherical portion 5a is formed in a hollow structure with one end opened, and the
pivoting member 4 is housed inside the hemispherical portion 5a.
A guide cylinder 5c is provided upright at the center of the inner bottom surface of the
hemispherical portion 5a. By inserting the long hole 4a of the rotation member 4 into the guide
cylinder 5c, the rotation member 4 has a length of the long hole 4a. It is movable along the axial
direction.
The shielding member 6 is a curved piece made of synthetic resin having substantially the same
curvature as the inner peripheral surface of the rotation member 4, and the long hole 4 a formed
in the rotation member 4 is covered by the shielding member 6.
The guide cylinder 5c of the support 5 is inserted into the long hole 4a and the shielding member
6 and reaches the inside of the rotating member 4, and the head of the mounting screw 7
screwed into the guide cylinder 5c and the shielding member A coil spring 8 is interposed
between the two.
[0020]
The base 5b of the support 5 protrudes downward from the hemispherical portion 5a, and its
lower surface is flat so as to keep the support 5 in a stable posture.
As shown in FIG. 4, a guide hole 10 having a circular shape in plan view is formed in the bottom
plate of the base 5 b of the support 5, and four notches 10 a are formed circumferentially in the
outer peripheral edge of the guide hole 10. It is formed maintaining an equal interval of 90
degrees.
That is, the outer peripheral edge of the guide hole 10 has four arc portions sandwiched by the
notches 10a, and for convenience, the two arc portions facing each other via the center of the
guide hole 10 have the arc-shaped circumferential surface 10b. When the remaining two arcs are
referred to as the arc-shaped guide surface 10c, two arc-shaped peripheral surfaces 10b and two
arc-shaped guide surfaces 10c are alternately formed on the outer peripheral edge of the guide
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hole 10 via the notch 10a. It is done. In addition, on the inner bottom surface of the base portion
5b, two concavo-convex portions 11 opposed to each other through the center of the guide hole
10 are formed, and these concavo-convex portions 11 straddle between two notch portions 10a
adjacent in the circumferential direction It is located in the outer side of circular arc-shaped
surrounding surface 10b. Furthermore, on the inner bottom surface of the base 5b, four stopper
protrusions 12 located on the outer sides of both ends of the arc-shaped guide surface 10c are
formed. These stopper protrusions 12 face one end of the uneven portion 11 through the notch
10a. doing. As shown in FIG. 5, the concavo-convex portion 11 is formed by alternately
connecting a plurality of peak portions 11 a and valley portions 11 b, and the height dimension
of the peak portions 11 a located at both ends of the concavo-convex portion 11 is another peak
Although it is set to be somewhat larger than the portion 11 a, it is set to be much smaller than
the stopper projection 12. Moreover, although the peak part of the peak part 11a located in the
both ends of the uneven | corrugated | grooved part 11 is sharp, a radius is attached to the peak
part of the other peak part 11a, and it is smooth.
[0021]
When assembling the speaker main body 1 configured in this way, the rotary member 4 and the
shielding member 6 are sequentially stored in the hemispherical portion 5a of the support 5, and
then the long hole 4a and the shielding member 6 are inserted and turned The mounting screw 7
in which the coil spring 8 is wound is screwed into the guide cylinder 5c protruding into the
inside of the moving member 4 and finally the speaker unit 3 is rotated using the locking claws
and locking grooves (not shown). The speaker unit 3 held by the support 5 can be rotated in the
extending direction of the long hole 4a (the Z1-Z2 direction in FIG. 2). . In addition, although the
shielding member 6 rotates and slides on the inner peripheral surface of the rotating member 4
with the rotation operation of the speaker unit 3, the long hole 4 a is always covered by the
shielding member 6. An airtight space of a predetermined capacity is secured behind the speaker
unit 3 regardless of the rotation angle of the speaker unit 3 so that the sound quality of the
speaker can be improved.
[0022]
Next, the configuration of the bracket 2 will be described based on FIG. 6 and FIG. 7. This bracket
2 is formed by forming a metal plate such as stainless steel into a predetermined shape, and the
bayonet claw 2a, the restriction piece 2b and the elastic tongue piece 2c. Are formed two by two
at positions facing each other 180 degrees. The bayonet claw 2a is formed to be bent in an
inverted L shape, and extends outward along the plate surface of the bracket 2 from the rising
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portion 2d extending in a direction substantially orthogonal to the plate surface of the bracket 2
and the tip of the rising portion 2d. The contact portion 2e is formed in a V-shape (see FIG. 5).
The restricting piece 2b is formed to be bent in a direction substantially orthogonal to the plate
surface of the bracket 2, and is formed into an arc shape in plan view. The elastic tongue piece 2
c is formed in a cantilever shape on the plate surface of the bracket 2, and its free end extends
obliquely upward so as to be lifted from the plate surface of the bracket 2. Here, the rising
portions 2d of the bayonet claws 2a and the restriction pieces 2b are alternately formed on the
same circumference while maintaining an equal interval of 90 degrees, and as described later,
when attaching the speaker main body 1 to the bracket 2. The rising portion 2 d moves inside
the arc-shaped circumferential surface 10 b of the guide hole 10, and the restricting piece 2 b
moves in contact with the arc-shaped guide surface 10 c of the guide hole 10. The elastic tongue
piece 2c is in elastic contact with the lower surface of the support 5 outside the restriction piece
2b, and the elastic force causes the contact part 2e of the bayonet claw 2a to be in elastic contact
with the uneven part 11.
[0023]
As described above, the movable speaker device according to the present embodiment is
configured of the speaker main body 1 and the bracket 2, and finally, the movable speaker device
configured in this manner is placed on a predetermined installation surface in the vehicle The
installation procedure will be described.
[0024]
First, as described above, after the speaker unit 3 is incorporated into the support 5 and
assembled as the speaker main body 1, the bracket 2 is fixed on the installation surface S using
an appropriate means such as the screw 13 or double-sided adhesive tape.
After that, the guide holes 10 formed in the bottom plate of the support 5 are made to coincide
with the bayonet claws 2a and the restriction pieces 2b of the bracket 2, and by pushing the
support 5 toward the bracket 2 in this state, both bayonet claws 2a The contact portion 2e is
inserted into the two notches 10a facing each other at 180 degrees, and the two restriction
pieces 2b are inserted outside the remaining two notches 10a. Next, when the speaker body 1 is
turned in one direction from this state, as shown in FIG. 5, the contact portion 2e of the bayonet
claw 2a passes over the peak portion 11a located on one end side of the uneven portion 11 Since
the bayonet claw 2 a is shifted from the notch 10 a to the concavo-convex portion 11 to fall into
the portion 11 b, the speaker main body 1 can be attached to the bracket 2. In the case of the
present embodiment, since the concavo-convex portion 11 is formed around the guide hole 10
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over an angle range of about 90 degrees, as shown in FIG. Can be turned about 90 degrees in the
direction of the arrows X1-X2 with respect to the bracket 2, and the speaker unit 3 of the
speaker main body 1 can be rotated in the plane orthogonal to the installation surface S with
respect to the support 5 Z1-. It can be turned about 90 degrees in the Z2 direction. Further, in
the case of the present embodiment, since the stopper projection 12 is formed at the end of the
notch 10a opposite to the uneven portion 11, the abutment portion 2e of the bayonet claw 2a
abuts on the stopper projection 12 The rotation operation of the speaker body 1 in the opposite
direction to the above is blocked, and the contact portion 2e of the bayonet claw 2a can be
reliably shifted to the concavo-convex portion 11 by the blind touch.
[0025]
Further, when the speaker main body 1 is rotated with respect to the bracket 2 in this manner,
the rising portion 2 d of the bayonet claw 2 a moves in a non-contacting manner inside the arcshaped circumferential surface 10 b. The restricting piece 2b moves while being in contact with
the corresponding arc-shaped guide surface 10c of the guide hole 10. Therefore, the speaker
body 1 can be smoothly rotated about the center of the guide hole 10 as a rotation center axis.
Moreover, in a state where the speaker main body 1 is attached to the bracket 2, free ends of the
elastic tongue pieces 2 c formed in a cantilever shape on the bracket 2 are in elastic contact with
the lower surface of the support 5. Since the contact portion 2e of the bayonet claw 2a is
resiliently urged on the concavo-convex portion 11 by the elastic force of the spring, the bayonet
claw 2a absorbs the difference in distance between the peak portion 11a and the valley portion
11b of the concavo-convex portion 11 Thus, the speaker body 1 can be smoothly rotated with
respect to the bracket 2. Furthermore, when the speaker main body 1 is rotated, the contact
portion 2e of the bayonet claw 2a passes over the peak 11a of the uneven portion 11 and falls
into the valley 11b, and the click feeling generated at that time manually operates the speaker
main body 1 Since the user is fed back, the user can recognize the adjustment angle of the
speaker main body 1 with respect to the bracket 2 with a click feeling.
[0026]
The speaker main body 1 need not necessarily be attached to the bracket 2 in the state of a
finished product. For example, after the support 5 is rotatably attached to the bracket 2 fixed on
the installation surface S, the speaker main body 1 described above In the same manner as in the
assembly process, the pivoting member 4 and the shielding member 6 are incorporated into the
support 5, and finally the speaker unit 3 is engaged with the opening end of the pivoting member
4 to complete the speaker body 1. May be
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[0027]
In the above embodiment, the movable speaker device has been described in which the speaker
main body 1 can be rotated about the bracket 2 in the direction of arrow X1-X2 of FIG. 2 by
about 90 degrees. The movable range can be appropriately set. For example, by forming the
uneven portion 11 around the guide hole 10 over an angle range of 90 degrees or more, the
rotatable range of the speaker main body 1 can be expanded.
[0028]
It is a disassembled perspective view of the movable speaker apparatus which concerns on an
Example.
It is a perspective view which shows the attachment state to the installation surface of this
movable-type speaker apparatus.
It is sectional drawing which shows the attachment state to the installation surface of this
movable-type speaker apparatus. It is a cross-sectional view of the support body provided in this
movable-type speaker apparatus. It is explanatory drawing of the uneven | corrugated | grooved
part provided in this support body. FIG. 6 is a plan view of a bracket provided to the movable
speaker device. It is sectional drawing in alignment with the VII-VII line of FIG.
Explanation of sign
[0029]
DESCRIPTION OF SYMBOLS 1 speaker main body 1 2 bracket 2a bayonet claw 2b control piece
2c elastic tongue piece 2d rising part 2e contact part 3 speaker unit 4 rotating member 4a long
hole 5 support body 5a hemispherical part 5b base 5c guide cylinder 6 shielding member 7
attachment Screw 8 Coil spring 9 Frame 10 Guide hole 10a Notched portion 10b Arc shaped
circumferential surface 10c Arc shaped guide surface 11 Irregular portion 11a Peak portion 11b
Valley portion 12 Stopper projection S Installation surface
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