Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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TITLE OF TILE INVENTION
INTERIOR BAG FOR A CONTAINER
TECHNICAL FIELD
This invention relates to an interior bag for a container, which is useful for
transporting all kinds of granulated or powdery goods such as cereal with a
general
shipping container.
BACKGROUND OF THE ART
The general shipping container for transportation of cereal grain has been
widely
known. The general-purpose shipping container of large size capable of dealing
with a
great deal of cargo and being piled one on top of another is suitable
particularly for
ocean transportation of a great deal of cereal.
The transportation using the general-purpose container can be inclined with a
tilt
mechanism to enable prompt operation to load and unload cargo with high
working
efficiency With the use of container bag installed inside the container, the
direct
loading and unloading of the cargo such as the cereal can be carried out while
protecting
the cargo in a hygienic way. So the container using the interior bag is
becoming
essential to current cargo transportation.
Thus, the interior bag for the container is indispensable for container
transportation
of cargo such as cereal, but it has one problem such that heavy granular cargo
such as of
cereal, which is loaded inside the interior bag held in the container,
disadvantageously
bulges out from a rear opening of the container to possibly interfere with
opening and
closing operation for rear doors of the container.
As a measure of resolving the aforementioned problem, one of the inventors of
the
present invention described herein has ever developed an innovative interior
bag for a
container for practical use, as described in Canadian Patent No. 2007045. This
container interior bag can diminish the number of supporting bars mounted
across the
rear opening of the container while effectively preventing the rear side
element of the
container interior bag from bulging backward with inner pressure due to the
weight of
the cargo.
The conventional container interior bag thus proposed is formed in a
rectangular
solid shape to fit the internal configuration of the container and has an
auxiliary tension
sheet suspending from the substantial midpoint of the height of the rear side
element of
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the bag. The auxiliary tension sheet is secured at its top part with one
horizontal
supporting bar and at its middle part with another horizontal supporting bar
and has its
lower part tucked into between the bottom of the bag and the bottom of the
container so
as to render the lower part incapable of dislocating therefrom due to the
burden of the
cargo contained in the container, consequently to keep a firm hold on the rear
side
element.
The container interior bag having the rear side element reinforced by the
auxiliary
tension sheet in cooperation with the supporting bars has the advantage of
being able to
load and unload the cargo easily and conveniently, but suffers from one
disadvantage of
being complicated in formation, consequently to increase the cost of producing
the bag.
Further, the conventional bag of this kind is not exclusively for cereals,
thus to be
far from being waterproof, and therefore, has a problem of making the cargo
dirty, foul
or unsanitary disadvantageously. Also, since the bag is produced by sewing
heavyweight and rigid cloth by using a thick sewing needle, needle holes
resultantly
formed cause diminish waterproof and airtight properties of the bag. Besides,
as the
conventional bag was produced by sewing pieces of cloth, it cannot have
adequate
strength to possibly cause the seam joint to be ruptured when loading the
cargo into the
bag provided inside the container or hauling the cwo. The sewing of the
heavyweight
and rigid cloth with tough textile thread to produce the bag capable of
sufficiently
enduring harsh usage is an extremely troubling laborious task. Therefore,
there has
been a great need for a tough container interior bag having an adequate
strength and
capable of being produced by a simple sewing work.
The granular cargo such as cereal is loaded into the bag inside the container
through a cargo loading opening formed in the upper part of the rear surface
of the bag
by using a hopper. When loading the cargo into the large-size container, the
container
is tilted by raising the back part of the container so as to loading the cargo
into the
container within a short time, consequently to increase the efficiency of
loading.
However, if the cargo is loaded precipitously into the container tilted
forwardly, the
container interior bag is disadvantageously deformed and displaced to be
distorted to
cause twisting and wrinkling in whole.
To prevent the dislocation of the bag inside the container, there has been
taken
measures of attaching hanging bands and hanging rings to corners or inner
walls inside
the container so as to suspend the bag in position. However, even this way
cannot
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thoroughly prevent the twisting and wrinkling of the bag, which are caused by
loading
the cargo into the bag within the tilted container.
The twising and wrinkling occur notably between the aforementioned auxiliary
tension sheet and the rear side element of the container interior bag,
involving
deformation of the bag due to the burden of the cargo to cause the seam joint
of the bag
to be broken and/or the cargo to leak from a hopper for letting the cargo into
the
container, consequently to pose a problem of rendering the bag incapable of
reuse.
SUMMARY OF THE INVENTION
The present invention seeks to provide an interior bag for a container, which
enables easy and safe loading, unloading and storage of cargo such as the
cereal and is
capable of being fitted into the container, handled and maintained easily and
conveniently.
Further, the invention seeks to provide an interior bag for a container, which
can
lessen backward bulging of the rear side element of the container interior
bag, caused due
to the burden of the cargo stored in the container, so that opening and
closing of rear
doors of the container can easily be performed in safety.
Still further, the invention seeks to provide an interior bag for a container,
having
an auxiliary tension sheet attached detachably to the rear side of the bag for
leassening
backward bulging of the rear side element of the bag, which is caused due to
the burden
of the cargo stored in the container.
Yet further, the invention seeks to provide an interior bag for a container,
in
which sheet joints of right and left side elements, upper side element, front
side element,
bottom side element and rear side element of the bag are strongly formed so as
to
sufficiently withstand even intense loading and unloading of cargo to be
stored within the
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container and ensure excellent waterproof and airtight performance for
protecting the
cargo in safety from rain water, grit and dust.
Further an aspect of the invention seeks to provide a container interior bag
capable of being produced effectively a low cost.
To attain the aspects described above according to the present invention,
there is
provided in one aspect an interior bag for a container, comprising a bag body
made by
splicing right and left side elements, upper side element, front side element,
bottom side
element and rear side element having a cargo loading opening into a shape to
fit an
internal configuration of the container, and a reinforcing sheet suspending
from
underneath the cargo loading opening along the rear side element, which
reinforcing
sheet is attached detachably to the rear side element of the bag body through
joint
portion.
The container interior bag according to the invention in characterized in that
the
reinforcing sheet has the upper end portion fixedly supported by a support bar
at a fixing
position of the middle of the rear side element of the bag so as to allow the
upper end
portion to freely move within a prescribed range, thereby to absorb distortion
caused
between the reinforcing sheet and the joint portion due to displacement of the
rear side
element when loading cargo into the bag.
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Further, the container interior bag according to the invention is
characterized in
that the rear side element is formed of a rear sheet having the cargo loading
opening
covered with an openable and closable flap sheet.
Further, the container interior bag according to the invention is
characterized in
that the rear side element is provided with a rear opening for letting the
cargo into the
bag, which rear opening is covered openably by a cover sheet.
Further, the container interior bag according to the invention is
characterized in
that the rear side element is formed of a cover sheet with a rear opening for
letting the
cargo into the bag and a rear sheet for openably covering the rear opening
having a cargo
loading opening.
Further, the container interior bag according to the invention is
characterized in
that the right and left side elements, upper side element, front side element,
bottom side
element and rear side element of the bag body are brought into overlapped face
contact
with and joined at their opposed edges with each other by heating welding.
Further, the container interior bag according to the invention is
characterized in
that the right and left side elements, upper side element, front side element
and bottom
side element are joined with each at their opposed edges in the state of
folding the joint
surfaces of the respective edge parts in four layers to form four-layered
reinforced joints
along the abutting joint edges.
Further, the container interior bag according to the invention is
characterized by
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slidably mounting holders for holding hanging members or fixing connectors on
thick
reinforced portions formed along the reinforced joints so as to freely move
the hanging
members or fixing connectors to arbitrary positions along the reinforced
portions.
Further, the container interior bag according to the invention is
characterized by
5 slidably mounting holders for holding hanging members or fixing
connectors on thick
reinforced portions formed along the reinforced joints and the hanging members
or
fixing connectors to be hooked on locking rings.
Further, the container interior bag according to the invention is
characterized in that
upper and lower subsidiary rear sheets are formed extending from the
respective rear
ends of the upper and bottom side elements and have right and left edges
joined to the
rear ends of the right and left side elements so as to confront the rear side
elements.
Further, the container interior bag according to the invention is
characterized in that
the reinforcing sheet is detachably attached to the rear side element of the
bag body.
Further, the container interior bag according to the invention is
characterized in that
the thick reinforced joint incorporates a bracing core along the longitudinal
direction to
form a thick reinforced portion.
Further, the container interior bag according to the invention is
characterized in that
the reinforced joint formed along the right and left edge parts of the upper
side element
has through holes bored in the front end and rear end thereof to retain the
hanging
members at the through holes.
Further, the container interior bag according to the invention is
characterized in that
the reinforced joint formed along the right and left edge parts of the bottom
side element
has through holes bored in the front end and rear end thereof to retain the
fixing
connectors at the through holes.
According to the container interior bag of the invention, backward bulging of
the
rear side element of the bag body, which is caused due to the burden of the
cargo
contained in the container, can be appreciably prevented to facilitate opening
and
closing operation of the rear doors of the container, so that loading and
unloading of
cargo such as the cereal can easily be carried out in cafe. Furthermore, the
auxiliary
tension sheet attached detachably to the container interior bag brings about a
desirable
effect of facilitating installation, handling and maintenance of the bag.
Specifically in
=
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a case of possibly causing twisting or wrinkling of the container interior in
loading or
unloading cargo with respect to the bag, the container interior bag of the
invention makes
it possible to absorb distortion caused between the reinforcing sheet and the
joint portion
due to displacement of the rear side element and prevent the supporting bar
from being
deformed due to undesirable burden imposed on the bag by means of the
reinforcing
sheet having its upper end portion freely movable relative to the fixing
position of the
rear side element of the bag body.
Moreover, since the auxiliary tension sheet of the container interior bag
according
to the invention is attached detachably to the bag body, the bag can easily be
produced
with high efficiency and made reusable to reduce the production cost of the
bag.
Further, the container interior bag of the invention has the reinforced joints
of
four-layered structure formed by folding and joining the joint surfaces of the
respective
edge parts of the right and left side elements, upper side element, front side
element and
bottom side element in four layers, so that the joint surface portions of the
bag body can
be made tough, robust and strong so as to sufficiently withstand even intense
loading and
unloading of cargo to be stored within the container.
In one broad aspect, the invention pertains to an interior bag for a container
having a rear opening and rear doors openably closing the rear opening. A bag
body is
formed by splicing right and left side elements, upper side element, front
side element,
bottom side element and rear side element having a cargo loading opening into
a shape
to fit the internal configuration of said container. A reinforcing sheet is
suspended from
underneath the cargo loading opening along the rear side element, and
horizontal
supporting bars are supported in the rear opening of the container for
supporting the
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6a
reinforcing sheet in a suspended state. The reinforcing sheet is attached
detachably to
the rear side element of the bag body through a joint portion. The joint
portion is
formed of connection bands aligned across the respective widths of the rear
side element
and the reinforcing sheet at prescribed intervals, to fasten the reinforcing
sheet to the rear
side element of the bag body in a freely movable state within a prescribed
range.
Further advantages and specific details of the invention will be set forth
hereinafter in conjunction with the following detailed description of a
presently preferred
embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partially cutaway perspective view showing an interior bag for a
container of the present invention.
FIG. 2 is a longitudinally exploded sectional view showing the principal
portion
of the bag of the invention.
FIG. 3 is an exploded perspective view showing the principal portion of the
bag
of the invention.
FIG. 4 is a longitudinal sectional side view showing the principal portion
before
mounting supporting bars in the bag of the invention.
FIG. 5 is a perspective view illustrative of the bag fitted inside a
container.
FIG. 6 is a longitudinal section side view illustrative of the principal
portion of
the bag in use according to the invention.
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FIG 7 is a partially cutaway perspective view showing the container interior
bag in
another embodiment of the invention.
FIG 8 is an exploded perspective view showing the container interior bag shown
in
FIG 7.
FIG 9 is an exploded longitudinal sectional side view showing in part the rear
part
of the bag of FIG 7.
FIG 10 is a partially cutaway perspective view showing in part the rear part
of the
bag of FIG 7.
FIG 11 is a partially enlarged perspective view showing one part of the bag
body
according to the invention.
FIG 12 is a partially enlarged longitudinal sectional side view illustrative
of the
suspended state of the bag in the container according to the invention.
FIG 13 is a partially enlarged view illustrative of the state of mounting a
hanging
member onto a reinforced edge part of the bag according to the invention.
FIG 14 is an exploded perspective view showing the relation between a thick
reinforced portion of a reinforced joint and a holder in the bag according to
the
invention.
FIGS. 15(A) through 15(C) are partially longitudinal sectional side views
illustrative of the action of the reinforced joint against an external force
in the container
interior bag according to the invention.
DETAILED DESCRIPTION OF THE INVENTION
One preferred embodiment of the present invention will be described
hereinafter
with reference to the accompanying drawings.
Referring to FIGS. 1 through 6 illustrating the first embodiment of the
invention, a
container interior bag 1 comprises a bag body 2 formed in a rectangular solid
shape to fit
the internal configuration of a general container 3. The bag body 2 has an
upper side
element 2a with four corners. At arbitrary positions of the side edge parts 4
extending
between the front and rear corners, there are disposed hanging members 5 for
hanging
the bag body 2 inside the container 3. Similarly, at arbitrary positions of
the side edge
parts 6 extending between the front and rear corners of an bottom side element
2b, there
are disposed connecting strings 7 for fixing the bottom side element 2b inside
the
container 3.
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The container interior bag 1 is useful for transporting and storing various
cargos
such as cereals and can be folded into a flat shape of small size when not in
use. When
used, the folded bag body 2 is first spread from the front side element 2c,
and then,
foremost hanging members 5 disposed on the front corners of the upper side
element 2a
are hooked on locking rings 34 fixed on the inner corners of the ceiling 3a of
the
container 3 in order from the front hanging member. Next, while keeping the
front
side element 2c close to the front inner wall of the container, the bag body
is spread
sterically so as to pull the rear side element 2d backward, and then,
remaining hanging
members 5 disposed on the corners of the upper side element 2a are hooked on
the other
locking rings 34 fixed on the ceiling 3a of the container 3. Finally,
connecting strings 7
attached to the corners of the bottom side element 2b of the bag body 2 are
fastened to
hanging members (not shown) disposed on the corners of the bottom of the
container 3,
thus to settle the bag body 2 within the container 3.
That is, with the hanging members 5 and connecting strings 7 fastened to the
hanging members fixed on the upper and lower corners inside the container 3,
the bag
body 2 is steadily retained in the container 3 entirely in the spatially
spread state while
keeping the front side element 2c of the bag close to the front inner wall of
the container
3, the right and left side elements 2e and 2f of the bag close to the side
inner walls of the
container 3 and the bottom side element 2b close to the bottom of the
container.
In the installed state of the interior bag in the container, the rear side
element 2d of
the bag body 2, which confronts the rear opening 8 of the container 3, is
suspended
within the rear opening 8. The rear side element 2d of the bag body 2 has a
cargo
loading opening 9 formed in the upper half thereof for loading the cargo into
the bag, as
shown in the drawings. The cargo loading opening 9 is covered with a flap
sheet 10
having its lower end part united with the lower rim of the cargo loading
opening 9 so as
to be openable outward about the lower end part as a hinge. The flap sheet 10
is shut
by locking a slide fastener 12 by sliding a sliding tab 11 so as to freely
open and close
the cargo loading opening 9.
The rear side element 2d is provided at the midpoint of height with a
retaining
member 13 horizontally extending substantially across the overall width of the
element
2d. Through the retaining member 13, the reinforcing sheet 14 is joined in the
suspended state to the rear side element 2d of the bag body 2.
The reinforcing sheet 14 for reinforcing the rear side element 2dhas a width
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substantially equal to that of the rear side element 2d and a longitudinal
length to hang
down below the lower end of the rear side element 2d. The reinforcing sheet 14
is
provided at the two portions of height, one near the top part 14a and the
other at the
middle part with relation to the overall height of the sheet 14, with tubelike
bar retaining
members 16 and 17 through which the supporting bars 15 are inserted.
As shown in FIG 3, the reinforcing sheet 14 has grommets 18 aligned
transversely
at prescribed intervals in the top part 14a thereof and connection bands 19
caught in the
grommets 18, and correspondingly, the retaining member 13 is also provided
with the
same number of grommets 20 catching connection bands 21 so as to tie up the
connection bands 21 on the connection bands 21, thereby to connect the
reinforcing
sheet 14 with the rear side element 2d.
Although this embodiment is illustrated as using four pairs of the grommets 18
and
and the connection bands 19 and 21, the number of such grommets and connection
bands is not specifically limited. That is, the invention does not contemplate
imposing
15 any limitation on not only the number of the grommets and connection
bands, but also
the material of these components. Namely, the grommets and connection bands
may
be made of any materials such as metal and plastic.
The connection bands 19 and 21 each have a length enough for being tied
together
to serve as connecting means for ultimately connecting the reinforcing sheet
14 to the
20 rear side element 2d of the bag body and arranged in a plural manner
widthwise at
prescribed intervals.
Incidentally, this embodiment employs the grommets and connection bands as
illustrated in FIG 3, but tough cloth bands or cords may be sewn, thermo-
welded or
firmly attached by any other ways directly to the retaining member 13 and/or
reinforcing sheet 14 instead of the grommets 18 and/or 20 and the connection
bands 19
and/or 21. As substitute for the connection bands 19 and 21, a fastening tape
consisting of minute hooks and uncut piles may of course be used to facilitate
connection and disconnection of the reinforcing sheet 14 relative to the rear
side element
2d. As an alternative, it is optional to provided one of the rear side
element 2d and
reinforcing sheet 14a with connection bands or hooks and the other with
engaging loops
or rings.
What matters is that the reinforcing sheet 14 is attached to the rear side
element 2d
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of the bag body 2 securely but movably within a prescribed permissible range
so as not
to be kept in a fixed position in a unified manner with the rear side element
2d, so that
the reinforcing sheet 14 can be freely placed at arbitrary position relative
to the rear side
element 2d while being kept in position. Thus, the connection bands 19 and 21
do not
5 always have to be made of elastic material.
To be specific, the structure for connecting the reinforcing sheet 14 to the
rear side
element 2d of the bag body through the retaining member 13 is employed in the
illustrated embodiment of the invention for the purpose of enhancing the
connecting
strength of the connection bands 21 relative to the rear side element 2d and
making
10 fabrication of the bag easy. From this respective, the connection band
21 may be
attached directly to the reinforcing sheet 14 without using the retaining
member 13.
As an alternative to a single sheet of retaining member 13 illustrated in FIG
3, a
plurality of strips may be used as the retaining member 13 so as to be
connected to the
respective connection bands 19 or directly to the top part 14a of the
reinforcing sheet 14.
The reinforcing sheet 14 is joined to the rear side element 2d of the bag body
2
through the connection bands 19 and 21 as described above, and when not in
use, it is
folded in the state attached to the rear side element 2d. When in use, the
reinforcing
sheet 14 is spread with the rear side element 2d and suspended as shown in FIG
4, so as
to be inserted into between the bottom side element 2b of the bag body 2and
the bottom
3b of the container 3.
In this state, the rear side element 2d of the bag body is hung from the rear
corners
of the ceiling 3a of the container 3 by means of the locking ring 34 to close
the rear
opening 8 of the container 3 entirely. The reinforcing sheet 14 is hung down
along the
rear side element 2d.
The reinforcing sheet 14 thus hung along the rear side element 2d is supported
by
the supporting bars 15 as shown in FIG 5.
The supporting bars 15 inserted through the bar retaining members 16 and 17
have
both ends supported by engaging grooves 23 formed vertically in the right and
left inner
walls 3c of the container 3. The upper supporting bar 15 is hung from the
ceiling 3a by
means of hanging belts 24 and hanging rings 25 to keep the reinforcing sheet
14 at a
prescribed position in conjunction with the lower supporting bar 15.
The rear side element 2d is securely supported by the reinforcing sheet 14
thus
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supported by the supporting bars 15 and having its lower part inserted into
between the
bottoms 2b and 3b of the bag body and the container.
As one example, the loading of the cargo such as cereals is performed by first
opening the rear double doors 26 for closing the rear opening 8 of the
container 3, tilting
the container 3 by lifting the rear of the container 3 at a prescribed angle
(about 45
degree) and introducing the cargo into inside the bag body 2 in the tilted
container 3 by
using a hopper inserted into a cargo loading opening 9 unclosed by opening the
flap
sheet 10.
In the drawings, 28 denotes a cover sheet openably closing entirely the cargo
loading opening 9 in the rear side element 2d. When loading the cargo into the
container inner bag, the cover sheet 28 is rolled up above the rear part of
the ceiling 3a
of the container 3, as shown by a chain line in FIG 4, so as not to allow the
cargo
discharged from the hopper to enter into the space between the bag body 2 and
the
container ceiling 3a or between the right and left side elements 2e and 2f of
the bag
body 2 and the side walls 3c of the container 3. Consequently, effective
prevention of
contamination of the container and efficient and speedy unloading of the cargo
can be
expected.
As shown in FIG 6 illustrative of the rear doors 26 of the container 3 in the
closed
state after loading the cargo into the container interior bag, the cargo GL
such as cereals
introduced into the bag presses against the inner walls of the container 3
with pressure of
the burden of the cargo, which is exerted on the bottom side element 2b, front
side
element 2c and right and left side elements 2e and 2f in sequence, so that the
lower part
14c of the reinforcing sheet 14 inserted into between the bottoms of the bag
body 2 and
container 3 is inextrictable caught firmly in between the bottoms with the
pressure
caused by the heavyweight cargo.
The heavyweight cargo GL further presses forcibly against the rear side
element 2d
of the bag body 2 to cause the rear side element 2d to bulge backward, but the
bulging
of the rear side element 2d is prevented by the reinforcing sheet 14.
FIG 6 illustrates the state of preventing the bulging of the rear side element
2d by
the tension action of the reinforcing sheet 14. Thus, the rear doors of the
container 3
can be opened and closed without being distracted by the bulging of the rear
side
element 2d caused by the burden of the cargo loaded into the bag. Beside, the
rear
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doors of the container 3 are less affected by the heavyweight cargo loaded in
the bag
owing to the supporting bars 15 even during transport of the cargo.
Meanwhile, the conventional container interior bag as described in the
aforementioned Canadian Patent has suffered a disadvantage such that the
supporting
bars disposed immovably on the rear portion of the container can possibly be
bent or
deformed to cause twisting and/or wrinkling of the bag body by the burden
produced in
injecting the cargo into the bag body consequently to be reusable or destroy
the bag
body and/or the joint portion relative to the reinforcing sheet.
However, the container internal bag according to the present invention has an
advantageous structure in which the rear side element 2d of the bag body 2 is
installed
so as to freely move relative to the reinforcing sheet 14 fixedly secured
relative to the
container by means of the connection bands 19 and 21, so that an undesirable
tensile
force imparted on the rear side element 2d due to moving of the rear side
element 2d can
be absorbed effectively by the connection bands 19 and 21. As a result, the
bag body 2,
the rear side element 2d and supporting bars 15 can be prevented from being
broken or
deformed by twisting and/or wrinkling caused by the undesirable tensile force.
Specifically, the container interior bag according to the invention can
surmount
disadvantages such that seam or joint parts between the side elements
constituting the
bag body 2 may possibly be torn apart or broken by the twisting and/or
wrinkling of the
side elements of the bag body caused by the undesirable tensile force,
consequently to
cause leakage and/or soilure of the cargo.
The bag body 2 including the reinforcing sheet 14 of the container interior
bag of
the invention is preferably made of high-strength fabric sheet material, but
the fabric
sheet in this invention is further required to be tough and have waterproof
property. As
examples, there may be used plastic sheet material of polyester, polyamide,
polyvinyl
chloride, polyomino or the like.
To be specific, thermoplastic sheet material capable of heat welding is more
preferable for this invention as it can enhance watertight and waterproof
effects to be
effective as the bag body of the invention.
When arriving at the prescribed destination, the container interior bag of the
invention having the structure as described above may be torn at the rear side
element
2d with a cutter upon opening the rear doors 26 of the container 3 and tilting
the
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container by lifting the rear of the container, thus to unload the cargo as
performed so
far.
Next, the second embodiment of the invention will be described hereinafter
with
reference to FIG 7 through FIG 15. In these figures, the elements indicated by
like
reference numerals or symbols with respect to those of the first embodiment
have
analogous structures and functions to those of the first embodiment and will
not be
described in detail again.
Similarly in the foregoing embodiment, the bag body 2 in this embodiment is
also
formed in a rectangular solid shape by uniting the upper side element 2a,
bottom side
element 2b, front side element 2c, rear side element 2d and right and left
side elements
2e and 2f by heat welding to fit the internal configuration of the container
3.
As shown in FIG 8 in an exploded state, the front side element 2c is composed
of
an upper half part U2c extending rearward from the rear end of the upper side
element
2a, a lower half part D2c extending rearward from the rear end of the bottom
side
element 2b and a rear sheet 2g independent of the upper side element 2a. That
is to say,
the front side element 2c and rear side element 2d in this embodiment are
divided
respectively into two parts in a preliminary manner, so that the respective
divided half
parts of the front side element 2c and rear side element 2d are united with
the upper side
element 2a and bottom side element 2b, whereas the structure of the bag body 2
comprising the upper and lower half parts U2c and D2c is substantively the
same as that
in the foregoing embodiment.
The joining of the upper side element 2a with the right and left side elements
2e
and 2f are fulfilled by respectively connecting the upper edge parts 2e1 and
2f1 of the
right and left side elements 2e and 2f to the right and left edge parts 2a1
and 2a2 of the
upper side element 2a in layers, to form four-layered overlap parts. The four-
layered
overlap parts are thermally welded to form thick oblong reinforced joints 31
along the
right and left edge parts 2a1 and 2a2.
As shown in FIG 11 through FIG 14, each four-layered reinforced joint 31
incorporates a bracing cOre 32 such as of a rope to form a thick reinforced
portion 33.
The thick reinforced portion 33 in this embodiment of the invention has an
effect of
further enhancing strength and rigidity of the reinforced joint 31 so as to
steadily retain
hanging members or fixing connectors as described below
CA 02709436 2010-07-12
14
In this embodiment, since the upper side element 2a is united in one body with
the
upper half part U2c of the front side element 2c and the upper half part U2d
of the rear
side element 2d, the thick reinforced portions 33 are also formed by
incorporating the
bracing cores 32 in the reinforced joint 31 formed between the upper half
parts U2c and
U2d and the right and left side parts 2e and 21.
In conjunction with joining the upper side element 2a to the right and left
side
elements 2e and 2f, the bottom side element 2b and the right and left side
elements 2e
and 2f are united at their edge parts 2b1, 2b2, 2e2 and 212 by heat welding in
the same
manner as above, thus to form thick reinforced joints 31 identical to the
aforementioned
reinforced joints 31. Similarly, each reinforced joint 31 incorporates a
bracing core 32
such as of a rope to form a thick reinforced portion 33.
The reinforced joint 31 with the reinforced portion 33 is formed respectively
at the
both end portions of the lower half part D2c of the front side element 2c, the
lower half
part D2d of the rear side element 2d and the edge parts of the right and left
side elements
2e and 2f.
On the other hand, with joining the upper side element 2a to the right and
left side
elements 2e and 2f in the manner as described, the butt edge parts of the
upper half part
U2c and the lower half part D2c of the front side element 2c are united in the
overlapped
face contact state by heat welding to constitute the front side element 2c.
The sheet
part forming the upper half part U2d of the rear side element 2d is finally
incorporated
in the bag body 2 upon complete of joining.
The independent upper half part U2d is formed by another processing after
assembling the entire bag body 2 because it is necessary to attach the
reinforcing sheet
14 and form the cargo loading opening 9.
The independent rear sheet 2g of the bag body in this embodiment is provided
with
the cargo loading opening 9 and flap sheet 10 similarly to the retaining
member 13 in
the foregoing embodiment so as to open and close the cargo loading opening 9
by
operating the slide fastener 12. The rear sheet 2g further has the retaining
member 13
and connection band 21 similarly to the foregoing embodiment. The reinforcing
sheet
14 having the tube-like bar retaining members 16 and 17 and connection band 19
is
attached detachably in a suspended state.
The independent rear sheet 2g of the rear side element 2d is united at its
upper edge
CA 02709436 2010-07-12
portion to the upper half part U2d of the rear side element 2d in the
overlapped face
contact state by heat welding, to form the rear side element 2d of the bag
body 2.
Upon incorporation of the upper half part U2d into the bag body 2, the
reinforcing
sheet 14 is joined to the upper half part with the connection bands 19 and 21.
The
5 connection bands 19 and 21 forming a joint portion serving as connecting
means are
aligned across the respective widths of the retaining member 13 and the
reinforcing
sheet 14 at prescribed intervals so as to fasten the reinforcing sheet 14 to
the rear side
element 2d of the bag body 2 in a movable state within a prescribed range.
Like the structure shown in FIG 7, the bag body 2 in this embodiment is
installed
10 inside the container in the state of being suspended by means of hanging
members 5a
attached to the four upper corners of the upper side element 2a similarly to
the hanging
members 5 in the foregoing embodiment. In FIG 7, denoted by 5b is an
intermediate
hanging member attached slidably to the aforementioned reinforced portion 33
formed
along the right and left edge parts 2a1 and 2a2 of the upper side element 2a.
15 As shown in FIG 13, the hanging member 5a is an S-shaped metallic hook
to be
attached to the bag body through binding bands 5c.
The binding band 5c is tied to an engaging through hole 5d formed in front and
rear edges of the reinforced joint 31 disposed along the edge of the upper
side element
2a so as to be retained through the hanging members 5a onto the front and rear
corners
of the bag body corresponding to the four corner edge portions of the upper
side element
2a The binding band 5c piercing the reinforced joint 31 is reinforced by a
grommet.
The intermediate hanging member 5b is set to the holder 30 to retain the
middle
portions of the right and left edges of the upper side element 2a at
prescribed intervals as
shown in FIG 14.
The holder 30 comprises a sliding member 30a having a C-shaped cross section
and an engaging piece 30b protruding from the back of the sliding member 30a
and
having a through hole 30c for catching the S-shaped hanging member 5a.
The holder 30 is attached to the thick reinforced portion 33 by fitting the C-
shaped
sliding member 30a to the reinforced portion 33, thereby to be slidably
movable freely
in the longitudinal direction of the reinforced portion 33.
Meanwhile, the bottom side element 2b of the bag body 2 is provided with
fixing
CA 02709436 2010-07-12
16
connectors 51 and movable connectors 52 for retaining the bag body 2 to the
inside of
the container 3 similarly to the hanging members 5a and 5b.
The fixing connector 51 is made of a tough band and fastened to an engaging
through hole 53 similar to the aforementioned engaging through hole 5d bored
in the
front and rear end parts of the reinforced joint 31 formed along the right and
left edge
portions 7a and 7b of the bottom side element 2b. The movable connector 52 is
fastened to the through hole 30c in the same holder 30 in the same
intermediate hanging
member 5b as previously described.
The container interior bag of the invention can be folded into a flat state in
an
arbitrary manner when not in use so as to be stored in a cardboard case or the
like. In
use, the folded bag should be unfolded inside the container 3 and installed in
the same
manner as described above.
Incidentally, the reinforced joint 31 is possibly damaged to strip off the
joint part of
the thermal-welded side element 2e as shown in FIGS. 15(A) through 15(C). To
be
more specific, the reinforced joint 31 formed a the joint part of the upper
side element 2a
and the left side element 2e assumes the regular state under normal conditions
as shown
in FIG 15(A). When the left side element 2e is forced to move inside the
container
with throwing the cargo into the bag body 2 or displacing the cargo during
transport,
twisting caused accidentally between the joint part and the upper side element
2a
possibly causes only the joint part to be stripped off, but the other parts
including the
reinforced joint 31 remain their joint state without being influenced by the
twisting of
the bag, as shown in FIG 15(B). The part between the upper side element 2a and
the
left side element 2e becomes tense to concentrate the burden on the joint part
as shown
in FIG 15(C). When the upper side element 2a and the left side element 2e are
supposedly drawn in a planar direction, the joint part is not easily stripped
off to
maintain its joint state. Thus, the bag body 2 can be prevented effectively
from being
destroyed due to the tensile force imposed on the bag body.
As is apparent from the foregoing, the present invention can provide the tough
and
robust container interior bag such as is described above. The toughness of the
bag of
the invention can be ensured by the two-layered or four-layered sheet
structure of the
reinforced joint 31 to enhance the strength of the bag and handling efficiency
of
spreading the bag body inside the container in use.
CA 02709436 2010-07-12
17
Further, the toughness of the bag can be ensured by the bracing core 32 such
as of a
rope embedded in the reinforced joint 31 to have the intermediate hanging
member 5b
and movable connectors 52 serving as fixing means. With the reinforced joint
31
incorporating the bracing core 32, the bag body can freely move by means of
the
reinforced portion 33 and the holder 30 to be adjusted relative to the
container and easily
set in position inside the container by means of the movable connectors 52
with the
intermediate hanging members 5b. Besides, the reinforced joint 31 and thick
reinforced portion 33 have an effect of strengthening the joint portion
against the tensile
load produced in moving the bag body, thereby to prevent the mounting portions
of the
bag from being damaged or destroyed.
Incidentally, although the bracing core 32 embedded in the reinforced portion
33 is
of a rope in the foregoing embodiments, the material of the bracing core is
not
specifically limited and may be of a metallic or fabric cable, tape and cord
or any other
string-like material. To put it briefly, any material or configuration may be
chosen
arbitrarily for the bracing core 32 as long as the reinforced portion 33 has
sufficient
flexibility to easily fold the bag body 2 when stowing the bag in non-use.
As is obvious from the foregoing, according to the interior bag for a
container of
the present invention, the rear side element of the bag body can effectively
be prevented
from bulging backward due to the cargo contained in the bag body by means of
the
reinforcing sheet in association with the supporting bars mounted across the
rear
opening of the container. Besides, the bag according to the invention can be
ensured
sufficiently in strength and toughness by the tough structure of the rear side
element
held by the reinforcing sheet and the four-layered structure formed by the
reinforced
joints incorporating the bracing cores and the thick reinforced portions, so
that the bag
can sufficiently sustain hard usage even under severe conditions in loading,
unloading
and transporting the cargo and be handled in safe with ease while dealing with
the
loaded cargo.
While the invention has been explained by reference to particular embodiments
thereof, and while these embodiments have been described in considerable
detail, the
invention is not limited to the representative means and methods described.
Those of
ordinary skill in the art will recognize various modifications which may be
made to the
embodiments described herein without departing from the scope of the
invention.
Accordingly, the scope of the invention is to be determined by the following
claims.
