TECHNICAL FIELD
The present invention relates to a foldable air cushioned structure, and more particularly to a foldable air cushioned structure with clasp points.
BACKGROUND
An air tight enclosure is made of resin film, and formed into air-tight air cylinders by means of heat-sealing. Furthermore, an air filling entrance for air filling is disposed therein, allowing the air tight enclosure to cushion a packed object after air is filled into the air cylinders via the air filling entrance.
Among air-filling air cylinder technologies, there is a cushioning air bag with a free opening, or a hammock structure of cushioning air bag; however they all have a common problem, i.e. the air cylinder cylinders must be formed as a face body to have a cushioning force if a corner, rhomboidal angle or edge of the enclosure is hit when an internal object drops. But, when the object drops to hit the enclosure with an acute angle thereof, a single air cylinder must be used to response the edge or rhomboidal angle of the object. However, the air cylinder cannot withstand one-dot or one-line impact force such that the cushioning protection of the object cannot be effected.
In common, the object is placed at a surface arranged with column of air cylinders. However, the weight of the object would make contact of two outer film of the air cylinders, and form deformation in some area. Further, the air flow and pressure would make some breakdown in the air cylinders, and reduce the cushion effect.
SUMMARY
To address these issues, the present invention provides a foldable air cushioned structure. The foldable air cushioned structure comprises a plurality of heat-sealing lines, a plurality of air cylinders, a plurality of nodes and a plurality of clasp points. The heat-sealing lines are formed by linear heat-sealing for attaching parts of two outer films. The heat-sealing lines are arranged in order, and the air cylinders are positioned between the heat-sealing lines. The nodes are formed inside the air cylinders by heat-sealing for attaching parts of the inner surfaces of respective outer films, and the nodes are arranged in lines perpendicular to the heat-sealed lines to form a plurality of foldable lines. The clasp points are formed on the outer surfaces of two outer films by heat-sealing for attaching parts of the outer surfaces of two outer films.
After folding the air cylinders along the folding lines, each of the air cylinders forms two side portions, at least one supporting portion and at least two bottom portions. Two side portions form a receiving space therebetween. Further, the air cylinders at two side can be bent and heat-sealed to form the receiving space surrounded with the side portions. The supporting portion forms at least one convex in the receiving space. The supporting portion comprises a propping section and two connecting sections positioned at two sides of the propping section after the air cylinders are folded via the nodes. The bottom portions connects to at least one of the connecting sections and the side portions. The bottom portion forms a concave between the connecting sections and adjacent side portions.
The technical characteristics of the foldable air cushioned structure of the present invention is folding the air cylinder by using via nodes, such that the convex-shaped supporting portion is formed in the receiving space for cushioning. The foldable air cushioned structure uses the pressure along the long-axis of the air cylinder to support the object, but not short-axis between two outer films. The foldable air cushioned structure of the present is much stable and not easily deforming. Even through the object is over-weight, the supporting portion would shrink firstly, but not break down the whole structure.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention can be more fully understood by reference to the following description and accompanying drawings, in which:
FIG. 1 is a perspective view before folding of a foldable air cushioned structure of a first embodiment according to the present invention;
FIGS. 2-4 are schematic views of the foldable air cushioned structure of the first embodiment according to the present invention during folding.
FIG. 5 is a cross-sectional view of the foldable air cushioned structure of the first embodiment according to the present invention;
FIG. 6 is a cross-sectional view of the foldable air cushioned structure of a second embodiment according to the present invention;
FIG. 7 is a side view of the foldable air cushioned structure of a third embodiment according to the present invention;
FIG. 8 is a cross-sectional view of the foldable air cushioned structure of the third embodiment according to the present invention;
FIG. 9 is a side view of the foldable air cushioned structure of a fourth embodiment according to the present invention;
FIG. 10 is a cross-sectional view of the foldable air cushioned structure of a fourth embodiment according to the present invention; and
FIG. 11 is a top view of the foldable air cushioned structure of a fifth embodiment according to the present invention.
DETAILED DESCRIPTION
Please refer to FIGS. 1-5, FIG. I is a perspective view before folding of a foldable air cushioned structure of a first embodiment according to the present invention, FIGS. 2-4 are schematic views of the foldable air cushioned structure of the first embodiment according to the present invention during folding, and FIG. 5 is a cross-sectional view of the foldable air cushioned structure of the first embodiment according to the present invention. As shown in FIG. 1, the foldable air cushioned structure 100 is an air-cylinder sheet before folding. The foldable air cushioned structure 100 comprises a plurality of air cylinders 10, a plurality of heat-sealed lines 20 and a plurality of nodes 30.
The foldable air cushioned structure 100 is made by two outer films 10a. The heat-sealing lines 20 are formed by linear heat-sealing the two outer films 10a for attaching parts of two outer films 10a. The heat-sealing lines 20 are arranged with substantially the same interval D. The air cylinders 10 are formed at the areas which are not heat-sealing after air-filling, and positioned between the heat-sealing lines 20. The nodes 30 are formed inside the air cylinders 10, and partially attach with two inner surfaces of two outer films 10a. There is a space 10b positioned between the node 30 and the heat-sealed line 20, such that air can filled into the air cylinder 10. Furthermore, the nodes 30 are arranged in lines perpendicular to the heat-sealed lines 20, and form a plurality of foldable lines L. Six foldable lines L are formed in the first embodiment shown in FIG. 1, however, the number of the foldable lines L is not limited.
As shown in FIG. 2, each of the air cylinders 10 forms two side portions 11, a supporting portion 13, and two bottom portions 15 after the air cylinders 10 are folded along the foldable lines L. A receiving space S is formed between the side portions 11. The bottom portion 15 connects the supporting portion 13 and adjacent side portion 11. The bottom portion 15 and the supporting portion 13 have reversed concave-convex structures. The supporting portion 13 forms a convex in the receiving space S for supporting a object. The bottom portion 15 forms a concave between the side portion 11 and the supporting portion 13,and forms a convex to be a support bottom surface outside to support the structure of the foldable air cushioned structure 100.
As shown in FIG. 1, and FIGS. 3-4, the air cylinders 10 which are formed at two sides of the foldable air cushioned structure 100 further comprises at least one air intake stopping blocks 10c. The air intake stopping block 10c is formed by heat-sealing two adjacent areas of two outer films 10a. The air intake stopping blocks 10c make the side portions 11 bendable. After bending, the side portions 11 can be attached together by heat sealing 21, such that the side portions 11 surround the receiving space S.
As shown in FIG. 1 and FIG. 5, Each of the air cylinder 10 further comprises an air valve 19 located at one end thereof for air filling. As shown in FIG. 5, each of the air cylinders 10 further comprises two inner films 10d therein, the inner films 10d are attached to the inner surfaces of the respective outer films 10a. An air inlet 10e is formed between the inner films 10d. For each of the air cylinders 10, after air is filled into the air cylinder 10 from the air valve 19, the air is filled to an inlet passageway 191, then filled into the space between the two outer film 10a via the air inlet 10e, such that the two outer film 10c can be driven to pull apart outward and to expand for forming the air cylinder 10. After air filling, the pressure in the air cylinder 10 would make the two inner films 10d attach with each other to seal the air inlet 10e and therefore allowing air in the air cylinder 10 not to leak. Moreover, the inlet passageway can be shared by a number of air cylinders 10.
The two outer films 10a may be formed of a thermally activated heat-sealable material such as polyester, Polyethylene polypropylene copolymer, Polyethylene terephthalate
(PET), ethylene ethyl acetate (EVA), polypropylene (PP), nylon (Nylon), and PE composite membrane, biodegradable material (biodegradable materials), the polymer material coated paper, or the like. But the present invention is not so limited, other materials may be used.
Referring to FIG. 5 again, the supporting portion 13 comprises a propping section 131 and two connecting sections 133. The connecting sections 133 are positioned at two sides of the propping section 131 after the air cylinders 10 are folded via the nodes 30. The nodes 30 are formed between each of the side portions 11 and the adjacent bottom portion 15, and between each of the bottom portions 15 and the adjacent supporting portion 13. The connecting section 133 is connected to the propping section 131 and adjacent bottom portion 15. Furthermore, the foldable air cushioned structure 100 further comprises a plurality of clasp points 40 formed on the outer surfaces of the outer films 10a to attach the two outer films 10a. The clasp points 40 can be implemented by heat-sealing. As shown in FIG. 5, the clasp point 40 is positioned corresponding to two adjacent connecting section 133 to attach two adjacent connecting section 133. Some of the clasp points 40 are also positioned corresponding to one of the connecting sections 133 and adjacent side portion 11 to the connecting sections 133 and adjacent side portion 11 for providing strength of the foldable air cushioned structure 100. In addition, the clasp points 40 are positioned on heat-sealing lines 20.
Please refer to FIG. 6, a cross-sectional view of the foldable air cushioned structure of a second embodiment according to the present invention. As shown in FIG. 6, the number of nodes 30 are increased in the second embodiment for increasing the foldable lines L, and two supporting portions 13 and three bottom portions 15 are formed. One of the bottom portions 15 is connected to two adjacent connecting sections 131, the rest two bottom portions 15 each are connected to one of the connecting sections 131 and the adjacent side portion 11. The number of the supporting portions 13 and the bottom portions 15 may be adjusted to satisfy the requirement by adjusting the number of nodes 30.
Please refer to FIG. 7 and FIG. 8, a side view and a cross-sectional view of the foldable air cushioned structure of a third embodiment according to the present invention. As shown in FIG. 7 and FIG. 8 , the foldable air cushioned structure 100 of the third embodiment comprises clasp points 40 positioned on the heat-sealing and near the bottom portions 15 of the air cylinders 10 which are at two sides of the foldable air cushioned structure 100, and each of the clasp points 40 is attached to a corresponding heat-sealing line 20. Therefore, the bottom portions 15 are pulled closely, and the cushioning at the sides is enhanced. The clasp points 40 are formed by heat sealing. In FIG. 7 and FIG. 8, some of the clasp points 40 are positioned on the heat sealing line 20 next to the outermost heat-sealing lines 20.
Please refer to FIG. 9, a side view of the foldable air cushioned structure of a fourth embodiment according to the present invention. As shown in FIG. 9, the foldable air cushioned structure 100 of the fourth embodiment further comprises clasp points 40 positioned on the heat-sealing lines 20 and near the bottom portions 15. Some of the clasp points 40 are positioned on the heat sealing lines 20 next to the outermost heat-sealing lines 20, and some of the clasp points 40 are also positioned on the other heat-sealing line 20 in the central area. Therefore, the cushioning at the sides can be further enhanced.
Please refer to FIG. 10 and FIG. 11, a cross-sectional view and a top view of the foldable air cushioned structure of a fifth embodiment according to the present invention. As shown in FIG. 10 and FIG. 11, the foldable air cushioned structure 100 of the fifth embodiment further comprises clasp points 40 formed on the heat-sealing line 20 and positioned near the side portions 15 of the air cylinders 10, and the clasp points 40 is attached to a corresponding heat-sealing line 20 especially the clasp points 40 are positioned on the heat-sealing lines 20 and near the top end of the side portion 11 and near the opening of the received space S, such that the foldable air cushioned structure 100 of the fifth embodiment has two received spaces S1. The clasp points 40 are formed by heat sealing.
The embodiments described above, the common technical characteristic is folding the air cylinder 10 by using nodes 30, such that the supporting portion 13 is formed in the receiving space S for cushioning. The foldable air cushioned structure used the pressure along the long-axis of the air cylinder 10 to support the object, but not short-axis between two outer films 10a. The foldable air cushioned structure of the present invention is stable and not easily deforming. Even through the object is over-weight, the supporting portion 13 would shrink firstly but not break down the whole structure.
While the present invention has been described by the way of example and in terms of the preferred embodiments, it is to be understood that the invention need not be limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures.
Patent Grant
9428315
