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DESCRIPTION JPS56111632

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DESCRIPTION JPS56111632
Specification 1, name of invention
Method for manufacturing a speaker grille in interior parts for automobiles
3, Detailed Description of the Invention EndPage: 1 This invention relates to a method for
manufacturing a speaker grille in a door trim and a rear bar cell in 1% of automotive interior
parts. Recently, with the spread of car stereos and the like, it has been done that speakers are
installed as standard equipment by attaching to the door of a passenger car from the balance
with acoustic effect or interior decoration etc. As a concrete structure, it is common to attach
speakers themselves to the outside of the door trim - and attach indoor side of door trim - niji
speaker grille to protect the speaker and at the same time give aesthetic appearance.
Conventional methods for attaching such speaker grill are various methods. For example, it is: ?
A protrusion integrally formed with a resin molded speaker grille is passed through the back of
the door trim and fixed with heat caulking or a bush nut ? All combinations with a non-conching
metal and a speaker net are combined with the next speaker grille A piece made by integrally
molding a piece, bent through the back of the door trim, (2) a cover made of a resin molded body
and a speaker net are combined with a door trim using a screw and a nut or a tucking screw "
There is a method such as fixed one. However, in any of the above methods, since the speaker
grill is a separate body and is fixed by means of fixing means such as screws after the assembly
and molding of the door trim, the number of parts and assembly steps are many, and the weight
and cost of the vehicle It is not preferable because it is in a form of going backwards. Also,
depending on the choice of the fixing means, the amount of expansion of the speaker grill if on
the interior side becomes large, and problems such as hindrance to the operability of the
regulator nomine disposed close to this' L was there. Butterfly of the present invention It was
made for the purpose of solving the above-mentioned problems, and it is intended to purchase
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the speaker grille together at the same time when the interior parts such as the door + J, etc. are
assembled by the high frequency welding device is there. That is, according to the method of the
present invention, the core material, which is the main part of the interior parts, is preliminarily
formed with a large amount of ventilation beforehand to serve as a speaker cover (- and also a
speaker net is added in addition to the pad material 0 which is the interior parts material on this
core material The loudspeaker grill is simultaneously purchased in conjunction with the assembly
of the interior parts which are to be laminated and used for a high frequency welding apparatus.
Hereinafter, the case where it is applied to the entire door trim of the embodiment of the present
invention will be described with reference to the drawings. Firstly, the mounting structure of the
inventive method v 'C according to the first embodiment of the present invention will be
described with reference to FIGS. 1 and 2.
2, the door 1) 1 is made up of a core material 2 and three members of the core material 3 and
the skin material 4, which are laminated on the core material 2, as is well known in the art, and
the speaker 5 is secured to the surface of the core material 2 with its baffle face facing the cabin
interior. In addition, a position corresponding to the speaker 5 of the core material 2 [U a large
number of vent holes 6, 6... Are drilled, and with respect to the pad material 31 </ b> C, a vent
hole 7 substantially equal to the speaker diameter is formed . -5 And on the core material 2, the
radial material 3, the fabric cloth 5 - the loudspeaker net 8 made of mesh and the skin material 4
are sequentially laminated and the welder along the edge of the speaker net 8 Melted and fused
at the same time, and after shaping, the speaker net 8 is exposed by separating the portion
corresponding to the speaker of the skin material 4 along this welder line. Next, the method of
the present invention will be described together with the apparatus with reference to FIGS. 3 and
4. 3 shows the basic structure of a high-frequency welding machine to be used in carrying out
the method of the present invention. This welding machine comprises a high-frequency generator
1O, a lower electrode 11 connected to the high-frequency generator 1O and an upper electrode
12. Then, the lower electrode J] is formed in a curved shape as much as possible in the shape of
the groove pattern 9 (see FIG. 1) by the welder line, and it is erected on the entire aluminum
substrate 13, [To cover 14, the upper end of each F electrode 11 is made to protrude above it
(only the electrode corresponding to the non-beaker net 8 is shown). Therefore, the plan shape of
the lower electrode 11 is the same as the above- IJ 6-End Page: 2 Mu? of the same shape as the
welder line shape. Corresponding to the speaker net 8, the electrode 11H has a cylindrical shape
corresponding to the shape of the welder line, and the company, the company on the inner
cylinder part of the electrode 11, poles 11 are cut, and the upper end of the electrode 11 slightly
protrudes A cut electrode 15 having a blade 15a is provided. Further, the upper electrode 12 is
formed in a flat plate shape and also serves as a movable ram, and the electrode 12 is brought
into contact with the guide base 16 to elevate and reduce the vicinities of the door to trap the
door trim material set between the upper and lower electrodes. ? 1 ___ ___ ___ 1 ___ ___ 0 In
order to assemble the speaker grill in conjunction with the door trim l using 's: In the process
shown in Fig. 4, on the core material 2 in which the vent holes 6, 6 ... are previously drilled,
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similar vent holes 7 bored f 'bored material 3.
Speaker net 89 Surface material 4 Position each and align them. Then temporarily fasten each
member to each other and turn it over, position it on the lower electrode Il, or a butterfly
Conversely, the skin material 4 on the lower electrode 11. ?????????? Pad material 3
core material 2 in this order. As well known, the skin material 4 is trimmed to a larger extent
than the core material 2, and its edge is foldable back to the back side. After completion of the
setting as described above, when the high-frequency voltage is applied while lowering the upper
electrode 12 and clamping each member between the upper electrode 12 and the lower
electrode 11, the respective members are heated from the inside and melted. In addition, in the
morning in this morning, furthermore, each member is integrally joined to the core material 2 to
form a linear pattern 9 of the welder line as shown in FIG. At the same time, the speaker net 8 is
nipped and held between the pad material 3 and the skin material 4. At this time, as shown in
FIG. 5 of the cut blade 15ad of the cut electrode 15, it cuts into the skin material 4, and this
cutting or thinning is performed to form the fusing line 17 inside the groove pattern 9. After the
Welda bathing process, the speaker 5 ((peeling off the skin material 4 of the corresponding part
along the blowing fuse 17) will expose the speaker net 8, which is shown in FIG. 2 The speaker
grill is made up. That is, the door trim is manufactured by laminating and bathing the speaker net
8 together with the pad material 39 skin material 4 on the core material 2 which has been
completely breathed in the portion corresponding to the speaker 5, (4) It is possible to construct
all the speaker grill for four pigs with the assembly of do ? ? trim. Fig. 6 shows the speaker
grill fl as shown in another example of lol singing according to the present 1 song invention, with
the 11 fl - code attached to the common part with the 21 th bacterium, the detailed explanation 1
is omitted Then, I will only look at parts that increase in composition, t, tsu, same! On the groove
pattern 9 with the welder line fixed 4 g of the speaker net 8, it is arranged with a color molding
18 i for ornamental decoration and a speaker net Bvc lying idiot, A high R ? was given. The
device used for assembling the decorated speaker grille is basically the same as that shown in
FIG. 3, but it is not the same as the one shown in FIG. 3, but it does not have the cutting blade 15
i, and the speaker net 8 At the upper end of the corresponding electrode 1, the circumference # 1
lla corresponding to the color molding 18 is formed. Next, we explain this advancement method
in more detail with reference to Fig. 6 and Fig. 7.
First of all, a color molding 18 is fitted to the circumferential groove lea of
I, and a speaker net
81 skin material 4, a pad material 3 is placed thereon. The core material 2 is laminated in the
order of positioning or temporarily fastened by laminating the above mentioned surroundings
beforehand and placed on the color molding 18 and positioned. In this case, not to mention core
2. For the pad material 3 and the skin material 4, ventilation holes 7 and 4 a are formed in
advance. Thereafter, when a high-frequency voltage is applied between the upper and lower
electrodes 11.12 and simultaneously pressurized, the respective members are integrally joined to
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the core material 2 to form a linear groove pattern 9 of that Welder larnar (FIG. 1 , And the
welder line at the periphery of the speaker net 8 is covered with the color molding 18 and is
subjected to the decoration as described above - 10 - End Page: 3 In this case, the diameter of the
vent hole 4 a of the skin material 4 Or the size of the diameter of the speaker net 8, even if it is
relatively rough, the edges of the butterfly are covered with the color molding 18 so that it is not
a problem so much. In the case of the embodiment , The ventilation hole 7 having the same
diameter as that of the speaker diameter is formed in advance with respect to the knot diamond
3, but in place of this, for example, even if many small ventilation holes are formed in the core
material 2, Can be obtained. In this case, since the pad material 3 is interposed between the core
material 2 and the speaker net 80 without disturbing the acoustic effect, the bulging feeling of
the speaker grille is obtained, and the appearance appearance is improved. As apparent from the
above description, in the method for manufacturing a speaker grill according to the present
invention, a vent hole is formed in advance in the core material as the main body of the interior
part to serve also as the speaker cover, and the interior Since the speaker nets are laminated in
addition to the pad material 1 skin material which is the component material and these members
are welded and integrated into the welder welding process 9, it is possible to integrate the
interior parts such as the door trim The speaker grill can be constructed at the same time as
assembly of the speaker, so that it is possible to drastically reduce the assembly cash deposit
compared with the conventional method. In addition, since the core material has moderate
rigidity and also has the function as a speaker cover), it is sufficient to add the speaker net 1 as a
member of the speaker grill, reducing the number of parts and reducing the weight Can be
realized. Furthermore, in the method of the present invention, the interior parts such as the door
trim and the speaker grille are perfectly integrated, so that the amount of expansion of the
speaker grill to the room side is suppressed, so there is no concern of interference with the
regulator handle There are effects such as.
4, Brief Description of the Drawings (1) Meat is a plan view of a door trim equipped with a
speaker, and FIG. 2 shows a mounting structure of the speaker grille obtained from the method
VC of the present invention, and FIG. 1 FIG. 4 is an exploded perspective view for explaining the
method of the present invention, and FIG. 5 explains a blown state by a cut electrode FIG. 6 is a
cross-sectional view showing a mounting structure of the speaker grille obtained as a result of
another embodiment of the method of the present invention, and FIG. 7 is an explanatory view
showing the solution layer process of the same. 1 ... door trim 2 ... core material 3 ... pad material
4 ... ... skin material 5 ... и и и и и и Speaker 6 и и и и и и и и и vent hole 8 и и и и и и speaker net 11 и и и
electrode 11 a и и и и circumferential groove 15 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
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