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JP2001333477

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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
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DESCRIPTION JP2001333477
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker box, and more particularly to a speaker box for embedding and fixing in an existing
mounting hole of an inner wall of a vehicle.
[0002]
2. Description of the Related Art It is now commonplace to enjoy sound through AM, FM or CD
through speakers in a car while driving. In the past, there were many speakers built into vehicles
that had been projected near the dashboard or rear seat, but recently, as shown in FIG.
Assembled with the speaker 155 exposed or through the front of the speaker 155 (inside the
vehicle) covered with a porous plate 156 or the like through the mounting hole 154 of the
genuine (existing) speaker drilled at 53. It came to be able to see what was That is, the inner wall
plate 153 is covered with the sound absorbing material 159 so as to prevent the resonance
phenomenon of the sound wave by covering the surface of the convex portion 158 which
complicatedly protrudes from the outer wall plate 157 of the double wall structure of the vehicle
to the inner space 152 side. There are many cases in which the speaker 155 is incorporated in
the mounting hole 154 that is drilled in the.
[0003]
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1
However, in the case of the former example of the conventional speaker described above, since
the speaker is incorporated in a state of projecting inside the vehicle, there is a problem that the
appearance of the interior of the vehicle is impaired. Further, in the latter example described
above, the speaker 155 is directly incorporated into the interior space 152 of the vehicle door
151 or the like even if the surface of the convex portion 158 projecting into the interior space
152 of the vehicle door 51 or the like is covered by the sound absorbing material 159 If this is
done, the sound wave in the large internal space 152 may cause a complex resonance
phenomenon or may be adversely affected by external noise through the outer wall to cause
distortion, resulting in a loss of acoustic effect. That is, the sound waves emitted from the back of
the speaker 155 interfere with each other in the internal space 152 to deteriorate the output of
the bass, which causes an adverse effect that the powerful sound is likely to be lost. Furthermore,
especially in the internal space of the vehicle door 151, rainwater, car wash water, etc. often
enter along the glass surface, and in such a case, the rain water, car wash water, etc. entered has
an adverse effect on the speaker which is an electrical component. There was a risk of giving.
[0004]
The present invention has been made to solve the above problems, and the existing speaker
buried and fixed in the mounting hole of the vehicle inner wall is removed, and the speaker is
accommodated in the mounting hole instead of the existing speaker. It is an object of the present
invention to provide a speaker box having a mounting flange capable of embedding and fixing
the speaker box.
[0005]
[Means for Solving the Problems] In order to solve the above-mentioned problems, the inventor
of the present invention has proposed that a convex portion exists in the internal space of the
double wall structure portion of the vehicle, and this structure is complicated. When the speaker
was embedded directly in the internal space, it was noted that parasitic vibration accompanied by
resonance causes distortion, and especially the sound of the bass is bad and it is easy to become
a sound lacking in force.
In addition, it was recognized once again that rain water, car wash water, etc. getting into the
vehicle door means that there is no way to prevent the structure of the vehicle door. And as a
result of variously examining this countermeasure, if it embeds and fixes the speaker box
incorporating a speaker using the attachment hole of the existing genuine speaker drilled and
formed in the inner wall of the vehicle, the inside of the complicated structure Focusing on the
suppression of the propagation of sound waves into the space, it was found that the problem
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2
could be solved by fitting the above speaker box into the mounting hole of a genuine speaker and
embedding and fixing it. In addition, they also found that it was necessary to cover the speakers
themselves to protect them from rainwater and car wash water.
[0006]
Then, the speaker box is disposed on the inner wall of the rear seat side door, the ceiling, the
dashboard, the rear seat, etc., if necessary, including the inner wall of the driver's seat side door
and the passenger side door of the vehicle. I thought that I could do The present invention is
made from such a point of view. The specific configuration of the present invention will be
described below. In addition, the definition etc. of the term performed in demonstrating the
invention of any claim shall be applied also to description of the invention in another claim in the
property possible range.
[0007]
A speaker box according to the invention described in claim 1 (hereinafter referred to as "the box
according to claim 1") is a speaker box used in a vehicle, wherein the speaker box is The present
invention is characterized in that the existing speaker which has been buried and fixed in the
mounting hole of the inner wall of the vehicle is removed, and can be buried and fixed in the
mounting hole instead of the existing speaker. As described above, since the speaker box has
compatibility that can be embedded and fixed in the existing speaker mounting hole as it is, there
is no need to intentionally form the mounting hole in the inner wall of the vehicle when
assembling the speaker box .
[0008]
In addition, since the back side and the side of the built-in speaker are blocked from the interior
space of the vehicle by the built-in back and side plates of the speaker box, the sound wave
emitted from the speaker is not transmitted to the interior space It will not be adversely affected
by external noises. As a result, the sound wave is not attenuated or distorted due to the
resonance phenomenon, and the sound wave is efficiently propagated in the front direction of
the speaker, that is, in the opening direction of the speaker box. Furthermore, the speakers built
into the speaker box are not adversely affected by rain water, car wash water and the like.
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[0009]
In the speaker box according to the invention described in claim 2 (hereinafter referred to as "the
box according to claim 2"), in addition to the configuration of the box according to claim 1, the
speaker box is an existing speaker. And a mounting flange having the same shape as the
mounting flange. As described above, when the mounting flange of the speaker box is matched
with the mounting flange of the existing speaker, the mounting operation of the speaker box can
be performed extremely easily without taking time and effort.
[0010]
The speaker box according to the invention described in claim 3 (hereinafter referred to as "the
box according to claim 3") is limited to the configuration of the box according to claim 1 or 2,
and the speaker A box is provided with a surface plate portion for attaching a speaker, a bottom
plate portion arranged to face the surface plate portion at an appropriate distance from the
surface plate portion, the surface plate portion and the bottom plate portion And a cylindrical
wall portion disposed between the two, and the cylindrical wall portion is formed of a cylindrical
paper tube.
[0011]
Thus, since a cylindrical paper tube is used as one of the members constituting the speaker box, a
cylindrical shape which is difficult to form with wood can be formed relatively easily, and The
thickness and length (the dimension in the depth direction with respect to the speaker mounting
hole) of the cylindrical portion can be easily adjusted.
Moreover, the cylindrical paper tube can be manufactured at low cost and is easy to obtain.
[0012]
In the speaker box according to the invention described in claim 4 (hereinafter referred to as "the
box according to claim 4"), in addition to the configuration of the box according to claim 3, It is
characterized in that the paper tube is a spiral paper tube having a thickness of 4 to 12 mm,
which is formed by winding a paper tube base paper in layers while interposing an adhesive.
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4
[0013]
The paper tube thus configured has sufficient strength and rigidity to be used as a speaker box of
a speaker box, and is suitable as a member for providing an excellent acoustic effect.
[0014]
The speaker box according to the invention described in claim 5 (hereinafter referred to as "the
box according to claim 5") has a cavity on the back side in addition to the configuration of the
box according to claim 3 or 4. In order to fit on an interior surface (for example, a wall surface on
the interior side of a front door) of a vehicle having a section (internal space), some mounting
portions (for example, insertion holes for screws) are provided for fixing to the interior surface. A
flange-like plate-like body) is annularly formed around the surface plate portion.
According to this structure, the speaker box can be easily attached to the attachment surface
simply by fixing the attachment portion to the interior surface.
[0015]
According to the sixth aspect of the present invention, there is provided a speaker box according
to the sixth aspect of the present invention (hereinafter referred to as "the box according to the
sixth aspect"), in addition to the box configuration according to any of the first to fifth aspects
Speakers are characterized in that they include mid-low range speakers and high-tone speakers.
As described above, since the speakers of the two-way system are collectively incorporated in the
speaker box, the speakers do not protrude inside the vehicle and are compactly stored.
[0016]
The speaker box according to the invention described in claim 7 (hereinafter referred to as "the
box according to claim 7") is a speaker box in addition to the configuration of the box according
to any one of claims 1 to 6. Is embedded and fixed to at least the driver's seat side door of the
vehicle and the inner wall of the front passenger's seat side door. As described above, the speaker
box can be embedded and fixed in the mounting holes of the existing speakers formed on the
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5
driver's side door and the passenger side door's inner wall, as well as on the other vehicle's inner
wall Is a big thing.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the speaker box of the
present invention will be specifically described below with reference to the drawings. FIG. 1 is a
perspective view showing an embodiment of the present invention, FIG. 2 is a developed view
showing a state in which the present invention is attached to an inner wall of a vehicle door, and
FIG. 3 is a state in which the present invention is attached to an inner wall FIG. 4 is a side
sectional view showing, and FIG. 4 is a schematic side view showing a position where the present
invention is attached to a vehicle. FIG. 5 is a perspective view showing a modification of the
speaker box, and FIG. 6 is an exploded perspective view of the speaker box shown in FIG. FIG. 7
is a cross-sectional view showing a state in which the speaker box is mounted. The surface plate
portion 15 shown in FIG. 1 is not shown so that the inside of the speaker box 1 can be seen.
[0018]
As shown in a perspective view in FIG. 1, the speaker box 1 in the present embodiment blocks
the back plate 12, the short cylindrical side plate 13 rising from the outer periphery of the back
plate 12, and the opening of the side plate 13. A face plate portion 15 (see FIG. 3) and a flange
14 extending outward from the opening edge of the side plate 13 are included. The flange 14 has
a bolt stopper 14 b for bolting the speaker box 1. The speaker box 1 is preferably made of
aluminum die cast or the like in addition to those made of wood or synthetic resin. The surface
plate portion 15 is attached with a speaker 11 such as a midrange 11 m which is a mid-bass
speaker and a tweeter 11 t which is a treble speaker. Although the sound absorbing material may
be attached to the inner wall surface of the back plate 12 or the side plate 13 of the speaker box
1, it is not restricted by the attachment of the sound absorbing material in this portion.
[0019]
Then, as shown in a developed view in FIG. 2 and in a side sectional view in FIG. 3, a mid range
11m and a tweeter 11t are provided in the existing speaker mounting hole 3 drilled in the inner
wall a 'of the door a of the vehicle A. The back plate 12 and the side plate 13 of the speaker box
1 project into the internal space b between the inner wall a ′ and the outer wall a ′ ′ of the
vehicle door a so that the front surface of the speaker 11 including After the speaker box 1 is
fitted in the speaker mounting hole 3, the speaker box 1 is fastened and fixed to the speaker
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mounting hole 3 using the fixing bolt 31 through the bolt fixing portion 14b of the flange 14
There is.
[0020]
At this time, the flange 14 attached to the speaker box 1 matches the mounting flange of the
existing speaker with the size and shape so that the speaker box 1 can be very easily inserted
into the existing speaker mounting hole 3 when the speaker box 1 is assembled. The work
efficiency can be greatly improved.
The sound absorbing material 2 may or may not be loaded in the internal space b between the
inner wall a ′ and the outer wall a ′ ′ of the vehicle door a prior to the installation of the
speaker box 1. As long as the speaker box 1 is incorporated, it is irrelevant to the sound wave
disorder.
[0021]
Further, since the built-in speaker 11 is blocked from the internal space b of the vehicle door a
by the back plate 12 and the side plate 13 of the built-in speaker box 1, the sound wave does not
propagate from the speaker 11 to the internal space b Sound wave is not attenuated or distorted
due to the resonance phenomenon, and the sound wave is efficiently propagated in the front
direction of the speaker 11, that is, the opening direction of the speaker box 1 without
deteriorating the sound quality. Become so.
[0022]
Also, if necessary, the opening of the speaker box 1 is covered with the porous plate 4, and the
porous plate 4 is fixed by the fixing bolt 31 using the bolt stop portion 14 b formed on the flange
14 of the speaker box 1. It may be fixed to the box 1 by fastening.
In this way, the speaker 11 can be protected from impact, dust and the like, and the
decorativeness of the speaker box 1 can be enhanced.
[0023]
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As described above, the speaker box 1 is embedded and fixed so as to protrude into the internal
space b of the vehicle door a. Although not shown, if the sound absorbing material 2 is attached
to the inner wall surface of the back plate 12 or the side plate 13 of the speaker box 1 to absorb
sound waves, the action of the back plate 12 or the side plate 13 of the speaker box 1 Combined
with the effect, an effect is obtained that the sound wave toward the front of the speaker 11 is
more efficiently propagated. Then, even if the internal space b of the vehicle door a or the like
has a complicated structure due to the presence of the convex portion b 'or the like regardless of
the presence or absence of the sound absorbing material 2, the sound wave in the internal space
b causes a complex resonance phenomenon And the problem that the sound effect is lost is
eliminated. Furthermore, the sound leakage of the speaker is also prevented.
[0024]
The speaker box 1 according to the present invention is mounted at the mounting position
shown by a broken line in the figure, that is, the driver's seat and passenger's seat side doors
which are double-walled parts of the vehicle A, as schematically shown in FIG. Since it can be
freely installed and disposed through the speaker mounting hole 3 drilled in the ceiling,
dashboard or inner wall a 'in the vicinity of the rear seat, etc. in addition to the inner wall a' of a,
it is optional The width is large.
[0025]
As described above, according to the present invention, the speaker 11 is built in the speaker box
1 with the front of the speaker 11 open, and the speaker box 1 is the existing speaker with its
opening front facing the inside of the vehicle A. By embedding and fixing in the mounting hole 3,
the sound waves flowing to the back side and the side are reduced from the speaker 11 including
the mid range 11m and the tweeter 11t stored in the speaker box 1, and the sound waves
resonate in the internal space b. Will not cause
[0026]
In the present embodiment, although two speakers of the mid range 11 m and the tweeter 11 t
are incorporated, the shape and form of the incorporated speakers and the number thereof are
not limited to the configuration of the present embodiment. .
For example, only one full range (full band) speaker or coaxial (a plurality of cones coaxially
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8
mounted) speakers may be built in, or a plurality of speakers divided in band may be built in. You
may do so.
Furthermore, for example, while incorporating a mid-low range speaker, and installing a hightone speaker, the speaker may be installed at another location in the car (for example, on the
indoor side of the door mirror base). It is also good. Conversely, the speaker for middle and highpitched sound may be built in, and the speaker for low-pitched sound may be provided at another
place.
[0027]
Next, based on FIG. 5 and 6, the modification of a speaker box is demonstrated. The speaker box
51 in the present modification is disposed facing the surface plate portion 53 at an appropriate
distance from the speaker 52, the surface plate portion 53 for attaching the speaker 52, and the
surface plate portion 53. In order to attach the speaker box 51 fixed to the outer peripheral
surface of the back surface part 54, the cylindrical side surface part 55 interposed between the
surface plate part 53 and the back surface part 54, and the cylindrical side surface part 55 And
the mounting portion 56 of the
[0028]
The speaker 52 has a cylindrical portion 52 a having an outer diameter substantially the same as
the diameter of the speaker unit attaching hole 53 a of the front surface plate portion 53. The
surface plate portion 53 is a circular plate-like member having a diameter substantially the same
as the outer diameter of the cylindrical side portion 55, and a speaker mounting hole 53a for
fitting the cylindrical portion 52a of the speaker 52. , Port 53c. That is, the speaker box 1 is a
bass reflex type (bass reflex type) speaker box (enclosure), and is intended to expand bass
reproduction by having the port 53 c. Although it does not specifically limit as a material of the
surface board part 53, Usually, woods, such as a plywood, are used.
[0029]
The speaker box 51 may be a closed type in which the port 53c is not provided, or may be a
phase inversion type other than the bass reflex type. A plurality of screw insertion holes 52b and
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53b are formed in the speaker 52 and the surface plate portion 53 at positions corresponding to
each other. The speaker 52 is integrally fixed to the surface plate portion 53 by inserting a screw
into the screw insertion holes 52 b and 53 b.
[0030]
The cylindrical side part 55 consists of a cylindrical paper tube. As a paper tube, a spiral paper
tube having a thickness of 4 to 12 mm, preferably 5 to 10 mm, which is formed by winding an
appropriate thickness (for example, about 1 mm) base paper for paper tube in layers while
interposing an adhesive. Is good. Depending on the type of base paper for paper tubes, if the
thickness is less than 4 mm, the strength and rigidity may be insufficient. If the thickness exceeds
12 mm, an unnecessarily large number of materials will be used. Not economical.
[0031]
The outer diameter of the cylindrical side portion 55 is the diameter (for example, about 12 to 14
cm) of a speaker box mounting hole provided in advance on the interior surface of the vehicle
(for example, the door trim which is the inner wall of the door). It is determined to be consistent
with). That is, since a circular speaker box mounting hole for mounting a genuine car stereo
speaker box is usually provided in advance on the interior surface of the vehicle (for example, the
surface of the door trim), this hole can be used as it is In order to use it, the cylindrical side
surface 55 is formed to have a cylindrical shape with an outer diameter substantially matched to
the diameter of the hole.
[0032]
The length of the cylindrical side portion 55 (the dimension in the depth direction with respect to
the interior surface of the vehicle) is such that the speaker box 51 can be accommodated in the
hollow portion on the back side of the interior surface of the vehicle, The length is set to such an
extent that a volume large enough to produce an excellent acoustic effect can be secured.
Specifically, for example, about 5 to 7 cm.
[0033]
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The cylindrical side portion 55 is formed of a cylindrical paper tube, so that various sizes can be
easily manufactured. That is, it is difficult to produce a cylindrical one having desired dimensions
using wood such as plywood or metal, while using a paper tube, the base paper for paper tube is
used during production. A paper tube having a desired thickness and outer diameter simply by
adjusting the outer diameter of the core for winding, and taking into consideration the thickness
of the base paper for paper tube, and determining the number of times of winding around the
core. You can get Further, the length of the paper tube can be easily adjusted by cutting a long
paper tube at an appropriate position. As described above, since the cylindrical paper tube is
used as the cylindrical side portion 55, the speaker box 51 attachable to the existing speaker box
mounting hole can be manufactured easily and at low cost. .
[0034]
The back surface portion 54 is a circular plate-like member having a diameter substantially the
same as the outer diameter of the cylindrical side surface portion 55. The material of the back
portion 54 is not particularly limited, but generally, wood such as plywood is used. The front
surface plate portion 3 and the back surface portion 54 are in contact with and fixed to the both
end surfaces of the cylindrical side surface portion 55 via an adhesive. A sound absorbing
material can be attached to the inner surface of the enclosure (specifically, the inner surface of
the cylindrical side surface 55 and the inner surface of the back surface 54) as necessary. An
attachment portion 56 for attaching the speaker box 1 to the interior surface of the vehicle is
fixed by an adhesive on the outer peripheral surface of the cylindrical side portion 55 close to
the surface plate portion 3.
[0035]
The attachment portion 56 is formed as an annular plate-like body provided with a hole 56 a
having a diameter substantially equal to the outer diameter of the cylindrical side surface portion
55. The mounting portion 56 has its rear side (the rear portion 54 side) in contact with the
interior surface of the vehicle, and then a screw is inserted through the screw insertion hole 56 b
to form the interior surface of the vehicle (for example, the surface of the door trim) It is fixed
to).
[0036]
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11
FIG. 7 is a cross-sectional view showing a state in which the speaker box 1 is attached to an
interior surface (surface of a door trim) of a vehicle. The door 57 of the vehicle has a doublestructured cross section having an outer wall 57a, an inner wall (door trim) 57b, and a cavity
57c. A speaker box mounting hole 58 for mounting the speaker box 51 is bored on the surface of
the inner wall portion 57b (the interior surface of the vehicle). In the speaker box 51, the outer
peripheral surface of the cylindrical side surface 55 is in contact with the inner peripheral
surface of the speaker box mounting hole 58, and the surface plate 53 is positioned slightly
projecting inward from the inner wall 57b. , And is fixed to the inner wall 57b by a screw 59. As
shown in FIG.
[0037]
The use of the speaker box according to the present invention makes it possible to prevent
resonance, interference and the like of sound waves in the interior space of a vehicle, and to
protect the speaker from rain water, car wash water and the like. As a result, it is possible to
contribute to the reproduction of sound with less distortion and the improvement of the
durability of the speaker.
[0038]
Brief description of the drawings
[0039]
1 is a perspective view showing an embodiment of the present invention.
[0040]
FIG. 2 is a developed view showing a state in which the present invention is attached to an inner
wall of a vehicle door.
[0041]
FIG. 3 is a side sectional view showing the present invention attached to the inner wall of a
vehicle.
[0042]
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12
FIG. 4 is a schematic side view showing the position where the present invention is attached to a
vehicle.
[0043]
5 is a perspective view showing a modification of the speaker box.
[0044]
6 is an exploded perspective view of the speaker box shown in FIG.
[0045]
7 is a cross-sectional view showing a state in which the speaker box is mounted.
[0046]
FIG. 8 is a side sectional view showing the conventional example attached to the inner wall of a
vehicle.
[0047]
Explanation of sign
[0048]
DESCRIPTION OF SYMBOLS 1 speaker box 11 speaker 11 m mid range 11t tweeter 12 back
plate 13 side plate 14 flange 14 b bolt stopping part 2 sound absorbing material 3 speaker
mounting hole (mounting hole) 31 fixing bolt 4 porous board A vehicle a vehicle door a 'inner
wall a ′ ′ Outer wall b internal space b 'convex
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