BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates to container technology and more particularly, to a
container formed by folding.
2. Description of the Related Art
[0002] Due to the rapid development of the times, the fast-food industry and out-eaters
have developed rapidly. Also, because people want to eat at home easily, they buy
disposable bowls and containers for holding foods. Many foods must be placed on a
plate for convenience in terms of sight and access. However, it is very inconvenient
to pour the food out the container into a dish.
[0003] It is a daily practice to make a three-dimensional container by folding the corners
of a sheet material. However, the folded parts must be bonded to enhance the the strength
of the container. Taiwan Patent Utility Number
M255233 discloses a multi-sided paper bowl structure that is formed by folding a circular
paperboard (10) into shape. The circular paperboard (10) comprises a circular base
portion (11) at the center, an outer polygon (12) disposed outside the circular based
portion (11), a plurality of folding lines (13) respectively outwardly extended from
respective angles of the outer polygon (12) and defining a plurality of isometrically
arranged pressing panels (14) and bonding panels (15). Each pressing panel (14) extends
outwardly with a protruding edge (16), and a crease line (17) is formed between the
protruding edge (16) and the pressing panel (14). By means of the folding lines (13),
the bonding panels (15) are folded up and respectively attached to respective back
sides of the respective pressing panels (14) so that the pressing panels (14) and
the respective protruding edges (16) are overlapped and respectively bonded together
to create a multi-sided paper bowl. However, such containers must be fixedly secured
in shape by bonding. After bonding, they cannot be unfolded into a flat shape for
application.
[0004] Further,
US-9,045,246 B2, entitled "Container usable as a deep bottom and shallow bottom type container, and
manufacturing method thereof". This design of container is usable as a deep bottom-
and shallow bottom-type container by changing between deep bottom- and shallow bottom-type
container configurations by folding along prescribed ruled lines, forming a protruding
part on the circumferential wall surface and forming undistorted smooth surfaces.
This container is usable as a deep bottom- and shallow bottom-type container in which
a deep bottom-type container configuration can be changed into a shallow bottom-type
container configuration, wherein the deep-bottom type container is obtained by folding,
along prescribed ruled lines, a single blank having a part with prescribed ruled lines
and corresponding to the bottom surface (referenced by 12D), a part sectioned into
compact triangles and quadrilaterals and corresponding to a partition surface, and
a part corresponding to an inner folded surface (referenced by 4), and the deep-bottom
type container comprises a protruding part formed without distortion on the circumferential
wall surface. According to this design, the deep-bottom type container is obtained
by folding, and the deep bottom-type container configuration can be changed into a
shallow bottom-type container configuration. After folded into shape, the deep bottom-type
container configuration does not provide any reinforced parts to prevent the contained
foods from being spilled out of the container. Therefore, when the food is contained
in the container, the support force around the container is completely insufficient,
and there is still inconvenience in application.
SUMMARY OF THE INVENTION
[0005] The present invention has been accomplished under the circumstances in view. It is
the main object of the present invention to provide a container that is shape formed
by folding for holding drinking or foods safely and conveniently, and that can be
conveniently unfolded into a plate for dish for holding foods.
[0006] To achieve this and other objects of the present invention, a container comprises
a base panel, at least three first folding panels, a plurality of second folding panels
and a plurality of fixation folding panels. Each first folding panel has one end thereof
connected to the base panel and defining with the base panel a first folding line
therebetween, and an opposite end thereof connected to one respective fixation folding
panel. The second folding panels are respectively connected between each two adjacent
first folding panels so that the first folding panels and the second folding panels
are alternatively arranged around the base panel. Each second folding panel comprises
a second folding line radially extended from the junction between two adjacent first
folding panels and the base panel. Each fixation folding panel comprises a connection
portion.
[0007] The first folding panels are inwardly folded up along the respective first folding
lines at the junction of the base panel so that the first folding panels are abutted
against one another to form a peripheral wall of the container where the peripheral
wall and the base panel surround an accommodation chamber. Each second folding panel
is folded up outwardly along the respective second folding line to form one respective
overlapped portion. Each overlapped portion is biased along connected long side of
the respective first folding panel in the clockwise or counter-clockwise direction
and attached to an outer side of the peripheral wall. Each fixation folding panel
is folded up outwardly along the respective third folding line and abutted at the
overlapped portion of one respective second folding panel overlapped on and secured
to the outer side of the peripheral wall of the container.
[0008] Preferably, the second folding panels have a kite shape, and the second folding line
of each second folding panel is the long diagonal of the kite shape.
[0009] Preferably, the connection portion of one fixation folding panel is connected to
another fixation folding panel to form a loop, creating a cup mouth of the container.
[0010] To achieve this and other objects of the present invention, a container comprises
a base panel, a plurality of first folding panels, a plurality of second folding panels
and a plurality of fixation folding panels.
[0011] Each first folding panel has one short side thereof connected to the base panel and
defining with the base panel a first folding line therebetween, and an opposite short
side thereof connected to one respective fixation folding panel to form a third folding
line therebetween. Each second folding panel is composed of a main folding panel portion
and an auxiliary folding panel portion. Each first folding panel has one long side
thereof connected to a long side of the main folding panel portion of one second folding
panel, and an opposite long side thereof connected to a long side of the auxiliary
folding panel portion of another second folding panel. The second folding panels are
respectively connected between each two adjacent first folding panels so that the
first folding panels and the second folding panels are alternatively arranged around
the base panel. Each second folding panel comprises a second folding line located
on the junction between the main folding panel portion and the auxiliary folding panel
portion thereof and radially extended from the junction between two adjacent the first
folding panels and the base panel.
[0012] The first folding panels are inwardly folded up along the respective first folding
lines so that the first folding panels are abutted against one another to form a peripheral
wall of the container where the peripheral wall and the base panel surround an accommodation
chamber. Each second folding panel is folded up outwardly along the respective second
folding line to overlap the auxiliary folding panel portion on the associating main
folding panel portion, and the overlapped auxiliary folding panel portion mand and
main folding panel portion are biased along the connected long side of the respective
first folding panel in the clockwise or counter-clockwise direction and attached to
an outer side of the peripheral wall.
[0013] Preferably, each fixation folding panel is folded up outwardly along the respective
third folding line to form a cup mouth flange. The cup mouth flanges formed of the
fixation folding panels are abutted against one another at an outer side of the peripheral
wall to create a cup mouth of the container.
[0014] Preferably, the cup mouth flange of each fixation folding panel has a bottom side
thereof abutted against a top edge of the auxiliary folding panel portion of one respective
second folding panel, and a distal end thereof stopped against one side of the main
folding panel portion of one respective second folding panel.
[0015] Other advantages and features of the present invention will be fully understood by
reference to the following specification in conjunction with the accompanying drawings,
in which like reference signs denote like components of structure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016]
FIG. 1 is a schematic top view of a container in an unfolded condition in accordance
with a first embodiment of the present invention.
FIG. 2 is a perspective view of the container in accordance with the first embodiment
of the present invention.
FIG. 3 is a sectional view, in an enlarged scale, taken along line 3-3 of FIG. 2.
FIG. 4 is a schematic top view of a container in an unfolded condition in accordance
with a second embodiment of the present invention.
FIG. 5 is a perspective view of the container in accordance with the second embodiment
of the present invention.
FIG. 6 is a sectional view, in an enlarged scale, taken along line 6-6 of FIG. 5.
FIG. 7 is a schematic top view of a container in an unfolded condition in accordance
with a third embodiment of the present invention.
FIG. 8 is a perspective view of the container in accordance with the third embodiment
of the present invention.
FIG. 9 is a sectional view, in an enlarged scale, taken along line C-C of FIG. 8.
DETAILED DESCRIPTION OF THE INVENTION
[0017] Referring to FIGS. 1-3, a container
10 that can be unfolded for application in accordance with a first embodiment of the
present invention is shown. The container
10 comprises a base panel
20, 8 first folding panels
30, 8 second folding panels
40 and 8 fixation folding panel
50.
[0018] The base panel
20 is octagonal in shape. The first folding panels
30 have the same rectangular shape and size arranged around the base panel
20. The second folding panels
40 have the same kite shape, however, this kite shape is not intended to limit the technical
features claimed in the present invention.
[0019] The first folding panels
30 have the same rectangular shape and size. Each first folding panel
30 has one short side thereof connected to the base panel
20, forming a first folding line
31 at the junction of the base panel
20.
[0020] The second folding panels
40 are respectively connected between each two adjacent first folding panels
30 so that the first folding panels
30 and the second folding panels
40 are alternatively arranged around the base panel
20. Preferably, the sides between each two adjacent first folding panels
30 are long sides that are respectively connected to two opposing long sides of one
respective kite-shaped second folding panel
40. Each second folding panel
40 has a second folding line
41 radially extended from the junction between the two adjacent first folding panels
30 and the base panel
20. Preferably, the second folding line
41 of each second folding panel
40 is the long diagonal of the kite shape.
[0021] The other short side of each first folding panel
30 is connected to one respective fixation folding panel
50, forming a third folding line
51 at the junction of the fixation folding panel
50. Preferably, each fixation folding panel
50 has a connection portion
53.
[0022] In the first embodiment of the present invention, the number of the first folding
panels, the second folding panels, and the fixing folding panels is not limited to
eight and may be other numbers such as three or ten, and the number in this embodiment
is eight that is simply an example for explanation but not a limitation.
[0023] As illustrated in FIG. 1, when the user unfolds the container
10 to form a disk shape, it can be used as a dish to hold the food to be eaten. When
the user folds up the disk shape, the desired effect lies in:
[0024] At first, as shown in FIG. 2, fold up the first folding panels
30 inwardly along the respective first folding lines
31 at the junction of the base panel
20 so that the first folding panels
30 are abutted against one another to form a peripheral wall
11 of the container
10 where the peripheral wall
11 of the container
10 and the base panel
20 surround an accommodation chamber
13. Thereafter, fold up each second folding panel
40 outwardly along the respective second folding line
41 to form one respective overlapped portion
43, and then bias each overlapped portion
43 along the long side of the respective first folding panel
30 in the clockwise (or counter-clockwise) direction to attach each overlapped portion
43 to the outer side of the peripheral wall
11 of the container
10. Thereafter, fold up each fixation folding panel
50 outwardly along the respective third folding line
51, enabling the fixation folding panels
50 to be overlapped on and secured to the outer side of the peripheral wall
11 of the container
10. Preferably, when folding up the fixation folding panels
50 outwardly, the connection portion
53 of one fixation folding panel
50 is wrapped in one respective adjacent fixation folding panel
50 to form a loop, thereby creating a cup mouth
15 of the container
10. When one fixation folding panel
50 is folded up outwardly, it is abutted against a top edge of one respective overlapped
portion
43, as shown in FIG. 3. Thus, the user can provide drink or foods in the accommodation
chamber
13 of the container
10 for drinking or eating, achieving the technical characteristics and the effects and
purposes of the container
10 claimed in the present invention.
[0025] Referring to FIGS. 4-6, a container in accordance with a second embodiment of the
present invention is shown. This second embodiment is substantially similar to the
aforesaid first embodiment with the exceptions outlined hereinafter.
[0026] Each fixation folding panel
50 has a receiving channel
52. The receiving channel
52 has a larger inner diameter of retaining portion
521. The connection portion
53 comprises a retaining block
55. The outer diameter of the retaining block
55 is larger than the receiving channel
52 but smaller than the retaining portion
521. The retaining blocks
55 of the connection portions
53 can be inserted into the receiving channels
52 of the respective adjacent fixation folding panels
50 and retained in the respective retaining portions
521 to form a loop, thereby creating a cup mouth
15 of the container
10. When one fixation folding panel
50 is folded up outwardly, it is abutted against a top edge of one respective overlapped
portion
43, as shown in FIG. 5.
[0027] In addition to achieving the technical characteristics and the effects and purposes
of the container
10 claimed in the present invention, the container
10 can be conveniently unfolded simply by removing the connection portion
53 of one fixation folding panel
50 from the adjacent fixation folding panel
50 for allowing the other fixation folding panels
50 to be extended out one after another.
[0028] The invention has the advantages as follows:
- 1. The invention can maintain the integrity and beauty of the original container or
the unfolded container and can achieve a certain sealing effect after the container
cover is closed.
- 2. The invention can utilize the folded indentation and curvature to make the unfolded
container have different crease changes, achieving different aesthetic effects.
- 3. The invention can be made by using a single piece of flat material, or a reinforcing
piece can be adhered to the base panel of the shaped container to reinforce the strength
of the base panel. Alternatively, the peripheral wall and base panel of the container
can be separately made of different sheet materials and then bonded together like
the fabrication of a disposable tableware in the market.
- 4. When the fixation folding panels of the cup mouth are folded up outwardly, they
are abutted against the respective top edges of the respective overlapped portions
to hold down the respective overlapped portions on the outer side of the peripheral
wall of the container without flipping out. When unfolding the container, the overlapped
portions can still be conveniently unfolded.
[0029] Referring to FIGS. 7-9, a container
10A that can be unfolded for application in accordance with a third embodiment of the
present invention is shown. The container
10A comprises a base panel
20A, 8 first folding panels
30A, 8 second folding panels
40A and 8 fixation folding panels
50A.
[0030] The base panel
20A is octagonal in shape.
[0031] The first folding panels
30A have the same rectangular shape and size. Each first folding panel
30A has one short side thereof connected to the base panel
20A, forming a first folding line
31A at the junction of the base panel
20A.
[0032] Each second folding panel
40A is composed of a main folding panel portion
41A and an auxiliary folding panel portion
43A. Each first folding panel
30A has one long side thereof connected to the long side of the main folding panel portion
41A of one respective second folding panel
40A, and an opposite long side thereof connected to the long side of the auxiliary folding
panel portion
43A of another second folding panel
40A. Thus, the second folding panels
40A are respectively connected between each two adjacent first folding panels
30A so that the first folding panels
30A and the second folding panels
40A are alternatively arranged around the base panel
20A.
[0033] Further, each second folding panel
40A has a second folding line
45A located on the junction between the main folding panel portion
41A and auxiliary folding panel portion
43A thereof and radially extended from the junction between the two adjacent first folding
panels
30A and the base panel
20A. Preferably, the overall area of the main folding panel portion
41A of each second folding panel
40A is larger than overall area of the associating auxiliary folding panel portion
43A.
[0034] The other short side of each first folding panel
30A is connected to one respective fixation folding panel
50A, forming a third folding line
51A at the junction of the fixation folding panel
50A.
[0035] In this third embodiment of the present invention, the number of the first folding
panels
30A, the second folding panels
40A, and the fixing folding panels
50A is eight that is simply an example for explanation but not a limitation, i.e., other
numbers such as three, four, five, six, seven, nine or ten can be selectively employed.
[0036] As illustrated in FIG. 7, when the user unfolds the container
10A to form a disk shape, it can be used as a plate or dish for food.
[0037] Referring to FIGS. 8 and 9 again, when the user is going to fold up the disk shape
into the container
10A, performs the steps outlined hereinafter. At first, fold up the first folding panels
30A inwardly along the respective first folding lines
31A at the junction of the base panel
20A so that the first folding panels
30A are abutted against one another to form a peripheral wall
11A of the container
10A where the peripheral wall
11A of the container
10A and the base panel
20A surround an accommodation chamber
13A. Thereafter, fold up each second folding panel
40A outwardly along the respective second folding line
45A to overlap the auxiliary folding panel portion
43A of each second folding panel
40A on the associating main folding panel portion
41A, and then bias the overlapped auxiliary folding panel portion
43A and main folding panel portion
41A of each second folding panel
40A along the long side of the respective first folding panel
30A in the clockwise (or counter-clockwise) direction to attach he overlapped auxiliary
folding panel portion
43A and main folding panel portion
41A of each second folding panel
40A to the outer side of the peripheral wall
11A of the container
10A. Thus, the user can provide drink or food in the accommodation chamber
13A of the container
10A for drinking or eating.
[0038] Further, each fixation folding panel
50A is folded up outwardly along the respective third folding line
51A to form a cup mouth flange
53A that is overlapped on and secured to the outer side of the peripheral wall
11A of the container
10A. Thus, the cut mouth flanges
53A are connected to form a loop, creating a cup mouth
15A of the container
10A. Preferably, the bottom side of the cup mouth flange
53A of each fixation folding panel
50A is abutted against the top edge of the auxiliary folding panel portion
43A of one respective second folding panel
40A and the distal end of the cup mouth flange
53A of each fixation folding panel
50A is stopped at one side of the main folding panel portion
41A of one respective second folding panel
40A. Most preferably, a first imaginary distance
D1 is defined between the cup mouth
15A of the container
10A and the distal end of the main folding panel portion
41A of each second folding panel
40A and a second imaginary distance
D2 is defined between the cup mouth
15A of the container
10A and the distal end of the auxiliary folding panel portion
43A of each second folding panel
40A where the first imaginary distance
D1 is shorter than the second imaginary distance
D2.
1. A container (10, 10A), comprising:
a base panel (20, 20A), a plurality of first folding panels (30, 30A), a plurality
of second folding panels (40, 40A) and a plurality of fixation folding panels (50,
50A), each said first folding panel (30, 30A) having one end thereof connected to
said base panel (20, 20A) and defining with said base panel (20, 20A) a first folding
line (31, 31A) therebetween and an opposite end thereof connected to one respective
said fixation folding panel (50, 50A), said second folding panels (40, 40A) being
respectively connected between each two adjacent said first folding panels (30, 30A)
so that said first folding panels (30, 30A) and said second folding panels (40, 40A)
are alternatively arranged around said base panel (20, 20A), each said second folding
panel (40, 40A) comprising a second folding line (41) radially extended from the junction
between two adjacent said first folding panels (30, 30A) and said base panel (20,
20A), each said fixation folding panel (50, 50A) comprising a connection portion (53);
wherein said first folding panels (30, 30A) are inwardly folded up along the respective
said first folding lines (31, 31A) at the junction of said base panel (20, 20A) so
that said first folding panels (30, 30A) are abutted against one another to form a
peripheral wall (11, 11A) of the container (10, 10A) where said peripheral wall (11,
11A) and said base panel (20, 20A) surround an accommodation chamber (13, 13A); each
said second folding panel (40, 40A) is folded up outwardly along the respective said
second folding line (41) to form one respective overlapped portion (43); each said
overlapped portion (43) is biased along connected long side of the respective said
first folding panel (30, 30A) in the clockwise or counter-clockwise direction and
attached to an outer side of said peripheral wall (11, 11A); said connection portion
(53) of one said fixation folding panel (50, 50A) is connected to another said fixation
folding panel (50, 50A) to form a loop, creating a cup mouth (15, 15A) of the container
(10, 10A).
2. The container (10, 10A) as claimed in claim 1, wherein each said fixation folding
panel (50, 50A) is folded up outwardly along the respective a third folding line (51,
51A) and overlapped on and secured to the outer side of said peripheral wall (11,
11A) of the container (10, 10A).
3. The container (10, 10A) as claimed in claim 2, wherein said connection portions (53)
of said fixation folding panels (50, 50A) are wrapped in respective adjacent said
fixation folding panels (50, 50A) to form a loop, creating said cup mouth (15, 15A).
4. The container (10, 10A) as claimed in claim 1, wherein said second folding panels
(40, 40A) have a kite shape; said second folding line (41) of each said second folding
panel (40, 40A) is the long diagonal of the kite shape.
5. The container (10, 10A) as claimed in claim 1, wherein each said fixation folding
panel (50, 50A), after having been folded up, is abutted against a top edge of one
respective said overlapped portion (43).
6. The container (10, 10A) as claimed in claim 1, wherein each said fixation folding
panel (50, 50A) comprises a receiving channel (52).
7. The container (10, 10A) as claimed in claim 6, wherein said connection portion (53)
of each said fixation folding panel (50, 50A) comprises a retaining block (55), said
retaining block (55) of said connection portion (53) of one said fixation folding
panel (50, 50A) is engaged into said receiving channel (52) of said connection portion
(53) of another said fixation folding panel (50, 50A) so that said connection portions
(53) of said fixation folding panels (50, 50A) are connected to one another to form
a loop.
8. The container (10, 10A) as claimed in claim 7, wherein said receiving channel (52)
comprises a relatively larger inner diameter of retaining portion (521); said retaining
block (55) of said connection portion (53) of one said fixation folding panel (50,
50A) is engaged in the said relatively larger inner diameter of retaining portion
(521) of said receiving channel (52) of said connection portion (53) of another said
fixation folding panel (50, 50A).
9. The container (10, 10A) as claimed in claim 8, wherein the outer diameter of said
retaining block (55) is larger than said receiving channel (52) but smaller than said
retaining portion (521).
10. The container (10, 10A) as claimed in claim 6, wherein when said fixation folding
panel (50, 50A) is folded up outwardly, the folded said fixation folding panel (50,
50A) is abutted against a top edge of one respective said overlapped portion (43).
11. A container (10, 10A), comprising:
a base panel (20, 20A), a plurality of first folding panels (30, 30A), a plurality
of second folding panels (40, 40A) and a plurality of fixation folding panels (50,
50A), each said first folding panel (30, 30A) having one short side thereof connected
to said base panel (20, 20A) and defining with said base panel (20, 20A) a first folding
line (31, 31A) therebetween and an opposite short side thereof connected to one respective
said fixation folding panel (50, 50A) to form a third folding line (51, 51A) therebetween,
each said second folding panel (40, 40A) being composed of a main folding panel portion
(41A) and an auxiliary folding panel portion (43A), each said first folding panel
(30, 30A) having one long side thereof connected to a long side of said main folding
panel portion (41A) of one said second folding panel (40, 40A) and an opposite long
side thereof connected to a long side of said auxiliary folding panel portion (43A)
of another said second folding panel (40, 40A), said second folding panels (40, 40A)
being respectively connected between each two adjacent said first folding panels (30,
30A) so that said first folding panels (30, 30A) and said second folding panels (40,
40A) are alternatively arranged around said base panel (20, 20A), each said second
folding panel (40, 40A) comprising a second folding line (45A) located on the junction
between said main folding panel portion (41A) and said auxiliary folding panel portion
(43A) thereof and radially extended from the junction between two adjacent said first
folding panels (30, 30A) and said base panel (20, 20A);
wherein said first folding panels (30, 30A) are inwardly folded up along the respective
said first folding lines (31, 31A) so that said first folding panels (30, 30A) are
abutted against one another to form a peripheral wall (11, 11A) of the container (10,
10A) where said peripheral wall (11, 11A) and said base panel (20, 20A) surround an
accommodation chamber (13, 13A); each said second folding panel (40, 40A) is folded
up outwardly along the respective said second folding line (45A) to overlap the said
auxiliary folding panel portion (43A) on the associating said main folding panel portion
(41A), and the overlapped said auxiliary folding panel portion (43A) mand said main
folding panel portion (41A) are biased along the connected long side of the respective
said first folding panel (30, 30A) in the clockwise or counter-clockwise direction
and attached to an outer side of said peripheral wall (11, 11A).
12. The container (10, 10A) as claimed in claim 11, wherein each said fixation folding
panel (50, 50A) is folded up outwardly along the respective said third folding line
(51, 51A) to form a cup mouth flange (53A), the said cup mouth flanges (53A) formed
of said fixation folding panels (50, 50A) being abutted against one another at an
outer side of said peripheral wall (11, 11A) to create a cup mouth (15, 15A) of the
container (10, 10A).
13. The container (10, 10A) as claimed in claim 12, wherein the said cup mouth flange
(53A) of each said fixation folding panel (50, 50A) has a bottom side thereof abutted
against a top edge of said auxiliary folding panel portion (43A) of one respective
said second folding panel (40, 40A), and a distal end thereof stopped against one
side of said main folding panel portion (41A) of one respective said second folding
panel (40, 40A).
14. The container (10, 10A) as claimed in claim 13, wherein a first imaginary distance
D1 is defined between said cup mouth (15, 15A) of the container (10, 10A) and the
distal end of said main folding panel portion (41A) of each said second folding panel
(40, 40A) and a second imaginary distance D2 is defined between said cup mouth (15,
15A) of the container (10, 10A) and the distal end of said auxiliary folding panel
portion (43A) of each said second folding panel (40, 40A) where said first imaginary
distance D1 is shorter than said second imaginary distance D2.
15. The container (10, 10A) as claimed in claim 12, wherein a first imaginary distance
D1 is defined between said cup mouth (15, 15A) of the container (10, 10A) and the
distal end of said main folding panel portion (41A) of each said second folding panel
(40, 40A) and a second imaginary distance D2 is defined between said cup mouth (15,
15A) of the container (10, 10A) and the distal end of said auxiliary folding panel
portion (43A) of each said second folding panel (40, 40A) where said first imaginary
distance D1 is shorter than said second imaginary distance D2, and wherein the overall
area of said main folding panel portion (41A) of each said second folding panel (40,
40A) is larger than the overall area of said auxiliary folding panel portion (43A).