Abstract:
A multiple-layer structure of inflatable device capable of pressure resistance includes a gasbag unit and a reinforcing shape-forming net. The gasbag unit includes a gas inlet, a flexible waterproof inner tube for fluid communication with the gas inlet, and a flexible material of outer tube covering the flexible waterproof inner tube, wherein the gasbag unit and the reinforcing shape-forming net covering the gasbag unit are both in independent structures. When the gasbag unit become expanded over the reinforcing shape-forming net, the reinforcing shape-forming net will resist the applied force from the gasbag unit, so that the gasbag unit can be made of a light weight material and thus the maintenance and renew become easy. The present invention is not only easy in maintenance but also efficiently reducing cost for all kinds of inflatable products and environment protection.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to an inflatable means, and more particularly to a multiple-layer structure of inflatable device capable of pressure resistance with gasbag thereof. 
       BACKGROUND OF THE INVENTION 
       [0002]    Air is an inexhaustibly safe energy without pollution. There are a lot of inflatable products, e.g. large inflatable advertising product, inflatable toy, inflatable boat, inflatable mattress, inflatable sofa, and so forth in the market. However, the existing inflatable products are all only with a structure of single-layer gasbag, which is generally made of expensive PVC composite material in order to enhance its pressure resistance and compression strength. The PVC composite material has advantages of air tightness, long life of service life, and so on, but it needs mass amount of solvents to disintegrate the PVC composite material for recycle, and it thus leads to a chain of environment pollution. In addition, if also the high price of such PVC composite material and difficulty of maintenance for its thick in thickness and heavy weight are in consideration, it is understood that such PVC composite material can not meet the requirement of energy save and environment protection for a modern world. 
         [0003]    Furthermore, wind power is a kind of excellent renewable energy if the concept of environment protection is considered. The conventional wind blade is generally made from mixed composite material including carbon-fiber-rein forced plastic (CFRP), carbon fiber (CF), or glass fiber (GF). When a fixed wind speed or a fixed wind power is considered, the weight and a frontal area of the wind blades will directly affect the efficiency of power generation. As a result, choosing a kind material of wind blade with lighter weight or designing a better structure of the wind blade has became the main points in the field. However, the existing material not only has the drawback of its heavy weight and hard for being shaped to thus directly affect the efficiency of power generation, but also has the drawback of its high cost in production. Thus, the existing material can not be satisfied the need for energy save and environment protection for a modern world too. 
       SUMMARY OF THE INVENTION 
       [0004]    Thereby, an object of the present invention is to provide a multiple-layer structure of inflatable device capable of pressure resistance that overcomes the defects existing in the prior arts. 
         [0005]    Another object of the present invention is to provide a multiple-layer structure of inflatable device capable of pressure resistance having a wind blade structure, which has the advantages of material save and light weight to thus greatly enhance the efficiency of wind power. 
         [0006]    The present invention overcomes the drawbacks of the prior art, and provides a multiple-layer structure of inflatable device capable of pressure resistance, which comprises a gasbag unit and a reinforcing shape-forming net. The gasbag unit includes a gas inlet and a flexible waterproof inner tube for fluid communication with the gas inlet. The reinforcing shape-forming net covers the gasbag unit, wherein a volume of the inflated gasbag unit is larger than an area covered by the reinforcing shape-forming net. 
         [0007]    In a preferred embodiment of the present invention, the gasbag unit includes a flexible material of outer tube covering the flexible waterproof inner tube, and a volume of the inflated flexible waterproof inner tube is larger than a volume of the flexible material outer tube. 
         [0008]    In a preferred embodiment of the present invention, the gasbag unit further includes a backup waterproof inner tube provided between the flexible waterproof inner tube and the reinforcing shape-forming net. 
         [0009]    In a preferred embodiment of the present invention, the gasbag unit further includes a backup waterproof inner tube provided between the flexible waterproof inner tube and the flexible material of outer tube. 
         [0010]    In a preferred embodiment of the present invention, the gasbag unit includes at least two gas inlets. 
         [0011]    In a preferred embodiment of the present invention, the gasbag unit is a tubular gasbag curved and provided within the reinforcing shape-forming net, two ends of the tubular gasbag are provided with two gas inlets respectively, and a connecting member is disposed between the gas inlets, and a air-connecting pipe is provided at a gap of the curved gasbag unit. 
         [0012]    In a preferred embodiment of the present invention, the gasbag unit is composed of at least two tubular gasbags connecting with each other and curved and provided within the reinforcing shape-forming, two ends of each of tubular gasbags are provided with both gas inlets respectively, and an anti-dislocation retaining cover is provided between the two tubular gasbags. 
         [0013]    In a preferred embodiment of the present invention, the reinforcing shape-forming net includes an upper net frame, a lower net frame and a plurality of pulling cords connected between the upper net frame and the lower net frame, wherein one of the pulling cords has an end thereof connected between the upper net frame and the lower net frame, and the other end of the pulling cords is connected between the upper net frame and the lower net frame by a releasable fastener. 
         [0014]    In a preferred embodiment of the present invention, wherein a hard material board is provided corresponding to an area of the lower net frame, and the hard material board has holes corresponding to the respective pulling cord between the upper net frame and the lower net frame. 
         [0015]    In a preferred embodiment of the present invention, the gasbag unit is composed of a connecting cloth and a slit opening for allowing the connecting cloth to pass through the slit opening. 
         [0016]    In a preferred embodiment of the present invention, the gasbag unit, which is a transparent cavity gasbag, is provided at an end thereof with a combining hole for allowing a light-emitting unit to be inserted and the other end thereof with a mirror plane corresponding to the combining hole. 
         [0017]    In a preferred embodiment of the present invention, wherein the gasbag unit is a transparent conical cavity gasbag, the strengthening and fixing net includes a separating net and a light-reflecting member positioned in a predetermined portion thereof, the gasbag unit is provided over the separating net of the reinforcing shape-forming net, and a hard material base is provided below the separating net of the same. 
         [0018]    In a preferred embodiment of the present invention, the gasbag unit further includes a connecting hole formed along a center axis direction for allowing a warning lamp to be inserted. 
         [0019]    In a preferred embodiment of the present invention, the gasbag unit is a wind blade shape cavity gasbag for covering on a wind blade device having a rotating shaft and a plurality of wind blades connected with the rotating shaft. 
         [0020]    In a preferred embodiment of the present invention, the flexible waterproof inner tube is a modeling inner tube and the flexible material outer tube is made from a chemical fiber (nylon) fabric and/or the fabric threads, and the reinforcing shape-forming net is made of one or the combination of a natural material, a metallic material, a plastic material, a nano material, a fiberglass material and a chemical fiber (nylon) material. 
         [0021]    Furthermore, in another preferred embodiment that the present invention overcomes the drawbacks of the prior art, and provides a multiple-layer structure of inflatable device capable of pressure resistance, which comprises a gasbag unit including a gas inlet, a flexible waterproof inner tube fluid connected with the gas inlet, and a flexible material of outer tube covering the flexible waterproof inner tube, wherein a volume of the inflated flexible waterproof inner tube is larger than a volume of the flexible material of outer tube, wherein the gasbag unit is a gas multi-pole structure; a reinforcing shape-forming net covering the gasbag unit, wherein a volume of the inflated gasbag unit is larger than an area covered by the reinforcing shape-forming net. 
         [0022]    In another preferred embodiment of the present invention, the flexible waterproof inner tube is a modeling inner tube and the flexible material outer tube is made from a chemical fiber (nylon) fabric and/or the fabric threads. 
         [0023]    In another preferred embodiment of the present invention, the reinforcing shape-forming net is composed of a plurality of partitioning members. 
         [0024]    In another preferred embodiment of the present invention, the reinforcing shape-forming net is provided with the holes and a pulling cord passing through the holes, and both ends of the pulling cord are fixed to each other. 
         [0025]    The gasbag unit, when inflated, is bigger than the reinforcing shape-forming net, so that the reinforcing shape-forming will resist the force applied to the gasbag unit. The gasbag unit may be made of light weight material and can be replaced with a new one if damaged. It greatly overcomes the defect of a prior art in which an inflatable product made of a single-layer composite material is hard to recycle. Further, the structure of the reinforcing shape-forming net is stronger and easier to form the shape without being limited to its air-tightness in material. It makes the utilization of the product more flexible by combination between or among the utilization of gasbag and gasbag or gasbag and hard material member. 
         [0026]    Furthermore, when a wind speed or a wind power of a wind power generator is considered as constant values, it is found that a weight and a frontal area of the wind blades will directly affect the efficiency of power generation. The wind blades, which do not need a rigid structure as that required in aerofoil, allow the elasticity in some degree so as to be rotated by the wind force. Therefore, the wind blades of the present invention can be used for compact wind power generator even at low wind speed or at roof in limited land resources such as in the city. When the gasbag unit of the present invention is covered on a wind blade of a conventional wind power generator and is inflated with helium gas, the total weight will be much less and the frontal area will be larger than conventional one, so that power generation efficiency thereof can be improved. Furthermore, if the air in the gasbag unit is allowed to be expelled in advance of the typhoon, it will elongate the time duty of the device. In addition, a cheaper modeling material may be used as the inner tube in the present invention, so that the inner tube can be replaced with a new cheap one when aged or damaged. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0027]    The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings. 
           [0028]      FIG. 1  is a perspective view illustrating the first embodiment according to the present invention; 
           [0029]      FIG. 2  is a perspective view illustrating the second embodiment according to the present invention; 
           [0030]      FIG. 3  is a sectional perspective view illustrating the second embodiment according to the present invention; 
           [0031]      FIG. 4  is a perspective view illustrating the strengthening and fixing net according to the present invention; 
           [0032]      FIG. 5  is a perspective view illustrating the third embodiment according to the present invention; 
           [0033]      FIG. 6  is a perspective view illustrating the fourth embodiment according to the present invention; 
           [0034]      FIG. 7  is an exploded view illustrating the fourth embodiment according to the present invention; 
           [0035]      FIG. 8  is a perspective view illustrating the fifth embodiment according to the present invention; 
           [0036]      FIG. 9  is a perspective view illustrating the sixth embodiment according to the present invention; 
           [0037]      FIG. 10  is a perspective view illustrating the seventh embodiment according to the present invention; 
           [0038]      FIG. 11 ,  FIG. 12  and  FIG. 13  are the perspective views illustrating the eighth embodiment according to the present invention; 
           [0039]      FIG. 14  and  FIG. 15  are the perspective views illustrating the ninth embodiment according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The First Embodiment 
       [0040]    A multiple-layer structure of inflatable device capable of pressure resistance  100  of the present invention is a square shape of inflatable cushion as shown in  FIG. 1 . The multiple-layer structure of inflatable device capable of pressure resistance comprises a gasbag unit  1  and a reinforcing shape-forming net  2 . The gasbag unit  1  includes a gas inlet  11 , flexible waterproof inner tubes  12 ,  13  which are in fluid communication with the gas inlet  11 , and a flexible material of outer tube  14  covering the flexible waterproof inner tube  12 , wherein the flexible waterproof inner tube  12  and the flexible waterproof inner tube  13  are with the substantially same size and are both shaped as square modeling inner tubes. The flexible material of outer tube  14 , which can accommodate the flexible waterproof inner tube  12  and  13 , is a heavy-duty fabric outer tube. The reinforcing shape-forming net  2  is made from a chemical fiber (nylon) material. The flexible material of outer tube  14  is provided with an opening hole  111  for allowing the gas inlet  11  extending. 
         [0041]    In this embodiment, the flexible waterproof inner tube  13  is a backup waterproof inner tube, wherein a volume of each inflated flexible waterproof inner tube  12  or  13  is larger than that of the flexible material of outer tube  14 . And a volume of each inflated flexible waterproof inner tube  12  or  13  is larger than an area covered by the rein forcing shape-forming net  2 . 
         [0042]    The flexible waterproof inner tube  12  or  13  provided within the flexible material of outer tube  14  can be of any arbitrary shapes. Since the flexible waterproof inner tube  12  and  13  are limited and covered by the flexible material of outer tube  14 , the flexible waterproof inner tube  12  or  13  will not be blew out due to the over inflation. 
         [0043]    The reinforcing shape-forming net  2  can reinforce the whole strength of structure for the inflated gasbag unit  1 , and also can prevent the gasbag unit  1  from over deformation due to external over pressure. It thus thereafter enhances the robustness of the multiple-layer structure of inflatable device capable of pressure resistance  100  of this embodiment as a cushion. 
         [0044]    Herein as an example, the flexible waterproof inner tube  13  as a backup inner tube is provided between the flexible material of outer tube  14  and the inflated flexible waterproof inner tube  12 . The flexible waterproof inner tube  13  may be immediately replaced in use as soon as the flexible waterproof inner tube  12  was broken so as to keep the inflatable device properly function. 
       The Second Embodiment 
       [0045]    A multiple-layer structure of inflatable device capable of pressure resistance  1000   a  of the present invention is also a square inflatable cushion as shown in  FIG. 2  to  FIG. 4 . The elements of this embodiment illustrated in these three Figs. are similar to those in the first embodiment. The second embodiment is different from the first embodiment in as follows. The gasbag unit  1   a  is a tubular gasbag which are curved and located within the reinforcing shape-forming net  2   a . The two ends of gasbag unit  1   a  are provided with a gas inlet  1   a  respectively. A screwed connecting member  15  is disposed for connecting both of gas inlets  11   a.    
         [0046]    In this embodiment, an air-connecting pipe  3  is perpendicularly provided within the gaps between the curved gasbag unit  1   a . The length of the air-connecting pipe  3  is smaller than the height of the full-inflated gasbag unit  1   a . The air-connecting pipe  3  is used for the air communication for the multiple-layer structure of inflatable device capable of pressure resistance  100   a  as an inflatable cushion. 
         [0047]    The reinforcing shape-forming net  2   a  as shown in  FIG. 4  includes an upper net frame  21 , a lower net frame  21  and a plurality of pulling cords  23  connected between the upper net frame  21  and the lower net frame  22 . One end of the pulling cords  23  connects with the upper net frame  21  and the lower net frame  22 , and the other end thereof connected between the upper net frame  21  and the lower net frame  22  via a releasable fastener  24 . Each of the air-connecting pipes  3  is covered on each corresponding pulling cords  23 . The described releasable fastener  24  may be a button, a cord fastener, etc. 
         [0048]    In order to enhance the steadiness of the inflatable cushion, a hard material board  4  is provided corresponding to an area of the lower net frame  22 . The hard material board  4  has holes  41  respectively provided to each corresponding pulling cords  23  between the upper net frame  21  and the lower net frame  22 . 
       The Third Embodiment 
       [0049]    A multiple-layer structure of inflatable device capable of pressure resistance  100   b  of the present invention is also a square inflatable cushion as shown in  FIG. 5 . The elements of this embodiment illustrated in this Fig. are similar to those in the second embodiment. The third embodiment is different from the second embodiment in as follows. The gasbag unit  1   b  is composed of two tubular gasbags connecting with each other. Two tubular gasbags are curved and covered by reinforcing shape-forming net  2   b . Two ends of each tubular gasbag are respectively provided with a gas inlet  11   b , and a screwed connecting member  15   b  is disposed between respective gas inlets  11   b  of two tubular gasbags. An anti-dislocation retaining cover  5  is provided between the two tubular gasbags to prevent any dislocation between the two tubular gasbags which are curved to locate. 
       The Fourth Embodiment 
       [0050]    A multiple-layer structure of inflatable device capable of pressure resistance  100   c  of the present invention is an inflatable backrest chair as shown in  FIG. 6  and  FIG. 7 . 
         [0051]    The gasbag  1   c  includes a backrest gasbag  12   c , a seat gasbag  13   c  and a cushion gasbag  14   c . The backrest gasbag  12   c  and the seat gasbag  13   c  are connected with the cushion gasbag  14   c  by means of the connecting cloth  4   c . The gas inlets  11   c  are respectively provided on the seat gasbag  13   c  and the cushion gasbag  14   c . The connecting cloth  4   c  is provided with a air connecting pipe  3  for fluid communication between the backrest gasbag  12   c  and the seat gasbag  13   c . The cushion gasbag  14   c  is provided with a slit opening  5   c  with a width same as the width of the connecting cloth  4   c  for allowing the backrest gasbag  12   c  and the connecting cloth  4   c  to pass through. The reinforcing shape-forming net  2   b  which is made from a chemical fiber (nylon) material covers the backrest gasbag  12   c , the seat gasbag  13   c  and the cushion gasbag  14   c.    
         [0052]    The multiple-layer structure of inflatable device capable of pressure resistance  100   c  of this embodiment is used as an inflatable backrest chair, the arrangement of which is provided with the backrest gasbag  12   c , the connecting cloth  4   c  and the cushion gasbag  14   c  to supply a stable backrest chair. In this embodiment, it is disassembled to become a simple bed. When not in use, it just leaks out the gas and folds to allow an easy storage. 
       The Fifth Embodiment 
       [0053]    A multiple-layer structure of inflatable device capable of pressure resistance  100   d  of the present invention is a lamp with an anti-vibration inflatable lamp cover as shown in  FIG. 8 . 
         [0054]    The gasbag unit  1   d , which is a transparent cavity gasbag, is covered outside thereof with a reinforcing shape-forming net  2   d  made from a chemical fiber (nylon) material. It is provided at an end of the gasbag unit  1   d  with a connecting hole  16  for allowing such as a lamp head  61  of a light-emitting unit  6  to insert. The other end of the gasbag unit  1   d  is provided with a mirror plane  62  corresponding to the connecting hole  16 . The mirror plane  62  faces toward the lamp head. This structure allows the light inflects to an inner side  11   d  of the gasbag unit  1   d  and then transmits to an outer side  12   d  of the gasbag unit id, so that the gasbag unit  1   d  becomes a light-emitting body. 
         [0055]    The gasbag unit  1   d  covered on the light-emitting unit  6  enhances the light concentration and advances light illumination. The inflated gasbag unit  1   d  also can protect the lamp head  61  of the light-emitting unit  6  from damage due to vibration or strike. When not in use, it just leaks out the gas in the gasbag unit  1   d , and then folds up the gasbag unit  1   d , so as to minimize the multiple-layer structure of inflatable device capable of pressure resistance  100   d  of the present invention. It thus is suitable for carrying and used as a night warning device. 
       The Sixth Embodiment 
       [0056]    A multiple-layer structure of inflatable device capable of pressure resistance  100   e  of the present invention is a portable light-emitting warning road cone as shown in  FIG. 9 . 
         [0057]    In this embodiment, the gasbag unit  1   e  is a transparent conical cavity gasbag with a gas inlet  11   e . The reinforcing shape-forming net  2   e  includes a separating net  25  and a light-reflecting member  26  positioned in a predetermined portion of the reinforcing shape-forming net  2   e . The gasbag unit  1   e  is provided over the separating net  25  of the reinforcing and fixing net  2   e , and a hard material base  7  is provided below the separating net  2   e  of the same. 
         [0058]    Further, the gasbag unit  1   e  further includes a connecting hole  17  formed along a center axis direction for allowing a warning lamp to be inserted. 
       The Seventh Embodiment 
       [0059]    A multiple-layer structure of inflatable device capable of pressure resistance  100   f  of the present invention is installed on a wind blade device  8  as shown in  FIG. 9 . The wind blade device  8  comprises a rotating shaft  81  and a plurality of wind blades  82  connected with the rotating shaft  81 . The multiple-layer structure of inflatable device capable of pressure resistance  100   f  comprises a gasbag unit if and a reinforcing shape-forming net  2   f  covering the gasbag unit  1   f . The gasbag unit if includes a plurality of air jackets  10   f , and each of the air jackets is covered correspondingly on the wind blade  82 , wherein the air jacket  100   f  has a jacket port  101   f , a gas inlet  11   e  for fluid communication with the jacket port  101   f , a flexible waterproof inner tube  12   f  for fluid communication with the gas inlet  11   e , and a flexible material of outer tube  14   f  covering the flexible waterproof inner tube  12   f . The structure thus extends the overall length of the wind blade and increases a frontal area of the same. In addition, a volume of the inflated flexible waterproof inner tube  12   f  is larger than that of the flexible material outer tube  14   f . And a volume of each inflated flexible waterproof inner tube  12   f  or  13   f  is larger than an area covered by the reinforcing shape-forming net  2   f.    
       The Eighth Embodiment 
       [0060]    A gasbag unit  1   g  of a multiple-layer structure of inflatable device capable of pressure resistance  100   g  includes an air jacket  10   g  and a gas inlet  11   g  as shown in  FIG. 11  to  FIG. 13 . The air jacket  10   g  is covered on a wind blade  92  of a wind blade device  9 , and a rotating shaft  91  of the wind blade device  9  is provided with a through hole member  93  for allowing a power unit (not shown) to be installed, wherein the through hole member  93  is composed of both through holes  931 ,  932 , which are provided on a reinforcing shape-forming net  2   g  having a sealing end  28  and a partitioning member  27 . 
         [0061]    The through holes  931 ,  932  are provided on the rotating shaft  91  of the wind blade device  9  for allowing a shaft rod  94  to insert. The reinforcing shape-forming net  2   g  is provided with holes H 1 , H 2 , H 3 , H 4  and the pulling cords  20   g ,  23   g , wherein the pulling cords  23   g  can pass through both holes H 1 , H 2 , so that both ends of the pulling cords  23   g  are fixed to each other, and the pulling cords  20   g  can pass through both holes H 3 , H 4 , so that both ends of the pulling cords  2   g  are fixed to each other to form as illustrated. 
         [0062]    Furthermore, in other embodiments, a multiple-layer structure of inflatable device capable of pressure resistance  100   h  of the ninth embodiment of the present invention is applied to a wind blade device as shown in  FIG. 14  and  FIG. 15 . The multiple-layer structure of inflatable device capable of pressure resistance  100   h  comprises a gasbag unit  1   h  with a gas inlet  11   h  and a reinforcing shape-forming net  2   h  covering with the gasbag unit  1   h . The multiple-layer structure of inflatable device capable of pressure resistance  100   h  of the present invention is provided with a connecting hole for covering on a strengthening disc A, which allows a power unit to be installed (not shown), wherein the strengthening disc A is composed of a strengthening disc base A 1 , a strengthening disc cover A 2  and a plurality of screws. 
         [0063]    As can be appreciated from the above embodiments, the multiple-layer structure of inflatable device capable of pressure resistance of the present invention has industry worth which meets the requirement for a patent. The above description should be considered as only the discussion of the preferred embodiments of the present invention. However, a person skilled in the art may make various modifications to the present invention. Those modifications still fall within the spirit and scope defined by the appended claims.