U.S. patent application number 10/040567 was filed with the patent office on 2003-07-10 for semi sandwich panel.
Invention is credited to Cho, Se-Hyun, Cho, Yong-Jun.
Application Number | 20030126830 10/040567 |
Document ID | / |
Family ID | 28457481 |
Filed Date | 2003-07-10 |
United States Patent
Application |
20030126830 |
Kind Code |
A1 |
Cho, Yong-Jun ; et
al. |
July 10, 2003 |
Semi sandwich panel
Abstract
The present invention relates to a semi sandwich panel in which
a cores material is partially formed in a portion which needs a
strength and intensity between both surface finishing materials
formed of a textile for thereby implementing a certain strength and
intensity of a sandwich panel, so that it is possible to obtain a
certain strength and intensity as a structure member which is a
feature of a sandwich panel, and the number of fabrication
processes is decreased, and the fabrication cost is decreased. A
core material is inserted into a portion which needs a certain
strength and intensity between both surface finishing materials
formed of a textile.
Inventors: |
Cho, Yong-Jun; (Kyungnam,
KR) ; Cho, Se-Hyun; (Kyungnam, KR) |
Correspondence
Address: |
Bidyut K. Niyogi
Transnational Enterprises, Inc.
Suite #207
95 Bulldog Blvd.
Melbourne
FL
32901
US
|
Family ID: |
28457481 |
Appl. No.: |
10/040567 |
Filed: |
January 7, 2002 |
Current U.S.
Class: |
52/783.1 ;
52/277; 52/576; 52/783.18; 52/794.1 |
Current CPC
Class: |
B61D 17/18 20130101;
E04C 2/388 20130101; E04F 13/0835 20130101; B32B 3/12 20130101;
E04C 2/22 20130101; B32B 5/26 20130101 |
Class at
Publication: |
52/783.1 ;
52/783.18; 52/794.1; 52/277; 52/576 |
International
Class: |
E04C 002/54 |
Claims
What is claimed is:
1. A semi sandwich panel in which a core material is inserted into
a portion which needs a strength and intensity between both surface
finishing materials formed of a textile.
2. The panel of claim 1, wherein said surface finishing material is
formed of more than one material selected from the group formed of
a glass fiber, a carbon fiber, a synthetic fiber, and an aramid
fiber.
3. The panel of claim 1, wherein said core material is formed of
more than one material selected from the group formed of an
aluminum honeycomb, a nomex honeycomb, a paper honeycomb, a
urethane foam, and an acrylic foam.
4. The panel of claim 1, wherein an insert nut is installed in the
core material formed between both surface finishing materials for
implementing a mounting structure.
5. The panel of claim 1, wherein said core material is formed in an
edge portion of the inner surface of the surface finishing material
and is partially formed across the edge portion of the same.
6. The panel of claim 1, wherein said core material is formed in an
edge portion of the inner surface of the surface finishing material
and is partially formed in a circumference of a window frame.
7. The panel of claim 1, wherein said semi sandwich panel is
adapted to an interior finishing material of a train or a ship.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a sandwich panel used as an
interior finishing material for a train and ship, and in particular
to a semi sandwich panel which has a certain lightness and strength
and is fabricated at a lower cost.
[0003] 2. Description of the Background Art
[0004] Generally, an interior finishing material which is used for
a train and ship formed of a metallic material, is fabricated at a
lower cost. A complicated product may be fabricated using the above
material. In this case, it is easier to maintain the train and
ship. However, the train and ship having an interior formed of a
metallic interior finishing material is easily rotten. So, the life
span is short. The total weight of the train or ship is increased
due to the metallic interior finishing material. Therefore, in
order to overcome the above problems, a surface finishing material
and core material formed of a textile are overlapped and bonded
using an adhesive for thereby fabricating a sandwich panel which is
used as an interior finishing material in the train and ship.
[0005] The above sandwich panel is lighter than a metallic panel
and has a better strength with respect to its weight and a better
durability.
[0006] However, since a core material filled between the surface
finishing materials is fully used or included in all over the
surface finishing material, the number of the fabrication processes
is increased, and the fabrication cost is significantly
increased.
SUMMARY OF THE INVENTION
[0007] Accordingly, it is an object of the present invention to
provide a semi sandwich panel which overcomes the problems
encountered in the conventional art.
[0008] It is another object of the present invention to provide a
semi sandwich panel which is capable of partially forming a core
material filled between both surface finishing materials formed of
a textile in a portion which needs an increased strength and
intensity of a sandwich panel for thereby implementing a certain
structural strength and intensity of a sandwich panel, simplifying
the number of fabrication processes and decreasing the fabrication
cost.
[0009] In order to achieve the above objects, there is provided a
semi sandwich panel in which a core material is inserted into a
portion which needs a strength and intensity between both surface
finishing materials formed of a textile.
[0010] The surface finishing material is formed of more than one
material selected from the group formed of a glass fiber, a carbon
fiber, a synthetic fiber, and an aramid fiber.
[0011] The core material is formed of more than one material
selected from the group formed of an aluminum honeycomb, a nomex
honeycomb, a paper honeycomb, a urethane foam, and an acrylic
foam.
[0012] The insert nut is installed in the core material formed
between both surface finishing materials for implementing a
mounting structure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention will become better understood with
reference to the accompanying drawings which are given only by way
of illustration and thus are not limitative of the present
invention, wherein;
[0014] FIG. 1 is a perspective view illustrating a semi sandwich
panel according to a first embodiment of the present invention;
[0015] FIG. 2 is a cross-sectional view taken along line A-A of
FIG. 1;
[0016] FIG. 3 is a cross-sectional view illustrating a mounting
structure of a semi sandwich panel of FIG. 1;
[0017] FIG. 4 is a perspective view illustrating a semi sandwich
panel according to a second embodiment of the present
invention;
[0018] FIG. 5 is a cross-sectional view taken along line B-B line
of FIG. 4; and
[0019] FIG. 6 is a cross-sectional view of FIG. 4.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0020] The preferred embodiments of the present invention will be
explained with reference to the accompanying drawings.
[0021] FIGS. 1 through 3 are views illustrating a semi sandwich
panel which is used as an interior finishing material for a train
according to a first embodiment of the present invention.
[0022] As shown therein, a core material 14 is formed into a
portion which needs a certain strength and intensity between both
surface finishing materials 12 formed of a textile for thereby
forming a semi sandwich panel 10.
[0023] As an example of the textile surface finishing material 12,
a glass fiber is impregnanted into a phenol or epoxy resin for
thereby producing a prepreg. The prepreg is disposed on a mold or a
molding base. Thereafter, a core material 14 is partially inserted
into an edge portion of the inner surface of the surface finishing
material 12 and in a rib shape across the edge portions based on a
known method for implementing a certain strength and intensity and
is molded at a high temperature or is fabricated based on a hand
lay up method at a room temperature and is hardened for thereby
fabricating a semi sandwich panel 10.
[0024] As shown in FIG. 3, in the semi sandwich panel 10, a certain
number of insert nuts 16 are installed in the interior of the core
material 14 for mounting in the structure of a train. A connection
bracket 20 is fixed to the insert nut 16. In addition, the
connection bracket 20 is installed in the semi sandwich panel 10,
so the semi sandwich panel 10 is mounted on the structure of the
train.
[0025] FIGS. 4 through 6 are views illustrating a semi sandwich
panel for an interior finishing material of a train according to a
second embodiment of the present invention and illustrating a semi
sandwich panel in which a window frame is integrally formed.
[0026] As an example of the textile surface finishing material 12,
a glass fiber is impregnanted into a phenol or epoxy resin for
thereby producing a prepreg. The prepreg is disposed on a mold or a
molding base. Thereafter, a core material 14 is partially inserted
into an edge portion of the inner surface of the surface finishing
material 12 and a circumference of the window frame 10a in a rib
shape based on a known method for implementing a certain strength
and intensity and is molded at a high temperature or is fabricated
based on a hand lay up method at a room temperature and is hardened
for thereby fabricating a semi sandwich panel 10.
[0027] The insert nut is installed in the core material 14 in the
same manner as the first embodiment of the present invention.
[0028] In the first and second embodiments of the present
invention, the textile surface finishing material 1 is formed of
more than one material selected from the group formed of a glass
fiber, a carbon fiber, a synthetic fiber, an aramid fiber.
[0029] In addition, in the first and second embodiments of the
present invention, the core material 14 is formed of more than one
material selected from the group formed of an aluminum honeycomb, a
nomex honeycomb, a paper honeycomb, a urethane foam, and an acrylic
foam.
[0030] In the first and second embodiments of the present
invention, the core material 14 which is partially filled between
both surface finishing materials 12, namely, is filled into a
portion which receives a stress and needs a certain strength and
intensity. The core material 14 is partially inserted between both
surface finishing materials 12 in various shapes based on the shape
and purpose of the interior finishing material.
[0031] As described above, in the semi sandwich panel according to
the present invention, the core material which forms a structure of
the sandwich is partially formed in an edge portion of the panel
which needs a strength and intensity between both surface finishing
materials and in a rib shape across the edge portions or in the
case of the window frame, the core material is formed in an edge
portion of the panel and the circumference of the window frame in a
rib shape for thereby decreasing the use of the core material
compared to the conventional sandwich panel, implementing a desired
strength, intensity and durability and decreasing the fabrication
cost. In addition, in the present invention, it is possible to
fabricate the product based on a smaller number of the fabrication
processes compared to the conventional fabrication method.
[0032] As the present invention may be embodied in several forms
without departing from the spirit or essential characteristics
thereof, it should also be understood that the above-described
embodiments are not limited by any of the details of the foregoing
description, unless otherwise specified, but rather should be
construed broadly within its spirit and scope as defined in the
appended claims, and therefore all changes and modifications that
fall within the meets and bounds of the claims, or equivalences of
such meets and bounds are therefore intended to be embraced by the
appended claims.
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