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JPS596697

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DESCRIPTION JPS596697
[0001]
According to the present invention, an acoustic diaphragm is squeezed into the opening of a rear
parcel shelf board (hereinafter simply referred to as a shelf board) by means of an inverted dishshaped guard which is shallower than the upper part via cushioning materials above and below
it. The invention relates to a vehicle acoustic device configured to maximize shelf space of a shelf
board. As a shelf board which attached the conventional speaker assembly to the upper surface,
there exists a thing as shown, for example to FIG. 1 (A) and (B). 1 is a shelf board, 2 and 2a are
two speaker assemblies including a woofer and a tweeter, and 3 and 4 are single speaker
assemblies of a woofer and a tweeter, respectively. . 2a and 3.4 are attached to the upper surface
of the shelf board 1 so as to protrude therefrom. However, in such a conventional shelf board,
the speaker assembly 2.2. Since the ratio of the area a, 3.4 protrudes above the shelving port is
large, there is a problem that the original storage space as a rear parcel shelf is largely lost. The
present invention has been made focusing on such conventional problems, and instead of
mounting a conventional speaker assembly having a large occupied area on the top surface of
the shelf board, the acoustic diaphragms are substantially coplanar. In addition to solving the
above problems by attaching and giving a speaker function, the upper and lower sides of the
acoustic diaphragm are provided with buffers 1 respectively, and they are held by the lower shelf
board and the upper guard respectively. It is intended to prevent the transmission of acoustic
vibrations to the shelf board and the guard. Hereinafter, the present invention will be described
based on the drawings. 2 to 4 show a first embodiment of the present invention. First, the
configuration will be described. Reference numeral 5 is a coverl shelve board provided between
the front and rear direction rear wheel dock 6 and the rear window glass 7 inside the vehicle and
between the left and right rear wheeler 8, and the shelf board 5 has a vehicle body structure. It is
attached on the panel 9 via a buffer felt 10. Reference numeral 11 denotes an acoustic
diaphragm (an excitation driver for acoustics) having an arbitrary shape such as rectangular 1
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circular or elliptical made of hard urethane or the like. Reference numeral 12 denotes an exciter
fixed on the lower surface of the acoustic diaphragm 11. The diaphragm 11 functions as a
speaker for an audio device. The above-mentioned acoustic diaphragm + 11d: on the lower
cushioning member 15, which continuously or intermittently holds the inner peripheral edge of
the flange 14 provided on the peripheral edge of the opening 13 recessed in the central portion
of the shelf board 5; The upper surface of the plate 11 is placed so as to substantially coincide
with the upper surface of the shelf board 5.
Also, 16 is an upper month holding the peripheral edge of the acoustic diaphragm 11
continuously or intermittently, 17 is a guard (or a speaker grille) such as a plastic injectionmolded product, and the Gart river 7 has a depth of It has a shallow rectangular inverted dish
shape, and is provided with a plurality of rectangular openings 18 on its upper surface and a
plurality of pins 19 on its lower surface. Pressed from the top by the guard 17 through the
above-mentioned acoustic vibration & 11 Fi placed on the lower cushioning material 15 and the
upper cushioning material 16 holding the peripheral edge, it is drilled on the shelf board 5 by the
above-mentioned bin 19 It is comprised so that it may push in and fix in the stop hole 20 by a
snap on system. A noncontact gap A is provided between the outer peripheral edge of the upper
cushioning material 16 described above and the shelf board 5 all around. Next, the operation will
be described. With the above-described configuration, when the acoustic device is used as a
speaker, an electrical acoustic signal is sent to the vibrator 12 to drive the acoustic diaphragm
11. At this time, the vibration of the acoustic diaphragm 11 is prevented from being transmitted
to the shelf board 5 and the guard 17 by the above-described lower cushioning material 15 and
the above-mentioned anti-JAi effect of the upper buffer 16 and the upper slack 16. The entire top
surface of the shelf boat 5 can be used as a space for parcels. 5 and 6 show a second
embodiment of the present invention. The same components as those of the first embodiment are
denoted by the same reference numerals. 17a is a guard having basically the same configuration
as the guard 17 of the first embodiment shown in FIGS. 2 to 4, but in addition to the plurality of
rectangular openings 18 on the upper surface, it is also on the entire circumferential side A
plurality of rectangular openings 21 are provided. Further, among the upper and lower shock
absorbing materials, at least the upper shock absorbing material 16a intermittently holds the
peripheral edge of the acoustic diaphragm 11 as shown in FIG. 6 so that sound waves can pass
from the side surface between them. Due to the presence of the side opening 21 of the guard 17a
described above, for example, a large parcel is placed on the shelf board 5 and the speaker sound
is emitted from the opening 21 to the outside even when the entire upper surface of the guard
17 & is blocked. Therefore, the entire upper surface of the shelf guard 5 including the guard 17a
can be used as a space for parcels like the first embodiment and one river. FIG. 7 shows a third
embodiment of the present invention. Reference numerals 15b and 16b denote flexible sheets for
preventing acoustic vibration, which are, for example, carpets of a cut pile or loop pile type
having fibrous bristles, flocked sheets, other non-woven cloths and the like.
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These fabric sheets 15b and + 6b are held from the upper and lower sides of the acoustic
diaphragm 11 with the foot side of each sheet as the top instead of the lower cushioning material
15 and the upper cushioning material 16 of the first embodiment described above. An adhesive
is applied to the upper surface of the acoustic diaphragm 11 and the entire upper surface of the
shelf board 5. Each of the sheets 15b and 16b has the same vibration damping effect as the
buffer moon 15.16 in the 11g1 embodiment described above, and as in the first embodiment, the
entire top surface of the shelf guard 5 including the guard 17b is parceled. It can be used as a
space for Also, FIGS. 8 to 10 relate to improvement of guard bins in another embodiment. This
bin has a flange 19b and a locking part 19a, and the flange 19b is received by the rear vehicle
body structure panel 9 so as not to be transmitted to the diaphragm even if an object is placed on
the guard. When the diaphragm 11 swings upward as shown in FIG. 9B), the carpet is turned
upward and the gap with the buckwheat portion 19b disappears. As shown in FIG. 9B, when the
diaphragm 11 swings downward, a gap S is formed between the flange 19 b and the carpet 26.
As a matter of course, in this embodiment, the guards are not integral as in the above
embodiment but may be in the form of a single strip. ′−! Also, it can be formed with a simple
structure and at low cost without using a shock absorbing material or the like. Alternatively, as
shown in FIG. 10, a separate clip 50 may be inserted into the locking portion 19a of the bottle to
further secure the fixing of the bottle to the vehicle body structure panel. The above description
is directed to each embodiment in the case where the audio apparatus is separately disposed at
the central portion of the shelf board 5 as a monophonic system of the audio device, but the
above respective systems may also be entirely disposed at the left and right of the shelfboard 5
as a stereo system. It conforms to the example. As described above, according to the present
invention, according to the present invention, the acoustic diaphragm is replaced so that its
upper surface substantially coincides with the upper surface of the shelf board, instead of the
conventional speaker assembly. The shelf board and the ginide include a girde without inducing
vibration from the acoustic diaphragm, because the shelf board and the gart having a plurality of
openings on the upper surface are held by the l The entire top surface of the shelf board can be
maximized as the original storage space for the rear parcel shelf.
[0002]
Brief description of the drawings
[0003]
Fig. 1 (a), (b) ld, a perspective view showing a conventional speaker assembly mounted on the
upper surface and a schematic view of a coverl shell board, Fig. 2 is a block diagram of the first
embodiment of the present invention. 3 is an enlarged cross-sectional view of III-III 13 in FIG. 2,
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FIG. 4 is a broken perspective view of the main part of FIG. 3, FIG. 5 is this FIG. 6 is an enlarged
cross-sectional view showing the electrode plate of the solar cell shelf board of the second
embodiment of the invention, FIG. 6 is a broken perspective view of the main part of FIG. 5, and
FIG. 7 is a third embodiment of this invention. FIGS. 8 to 10 are enlarged sectional views showing
the outline of the main part of the coverlizer card board, and FIGS. 8 to 10 are main part
sectional views showing another embodiment.
t, 5 ········· rear parcel shelf board 2.2 a, 3 * 4 ··· speaker assembly 9 ......... vehicle body structure
panel 10 ...... Felt 11 ····· Acoustic diaphragm 12 ·············································································· Lower
buffer material 16.16a ······ Upper buffer material 15b, + 6b: Fabric sheet 17, I 7a, 1 7b =-Car 4
'18.21 ........... Rectangular opening Fig. 4 Fig. 5 Fig. 6 Fig. 620-Fig. 7
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