Patent Publication Number: US-9844255-B2

Title: Cover-type containing structure for flexible enclosures

Description:
RELATED APPLICATION 
     This application is a Divisional of co-pending application Ser. No. 13/117,880, filed on May 27, 2011, which is a Continuation-in-Part of application Ser. No. 12/955,678, filed on Nov. 29, 2010, which is a U.S. National Stage of International Application No. PCT/CN2009/000596, filed on May 27, 2009, for which priority is claimed under 35 U.S.C. §120, and this application claims priority of Application No. 200810028408.4, filed in China on May 30, 2008 under 35 U.S.C. §119(e), the entire contents of all of which are hereby incorporated by reference. 
    
    
     BACKGROUND OF THE INVENTION 
     a) Field of the Invention 
     The present invention relates to a cover-type containing structure for flexible enclosures, and more particular to a multi-functional structure which applies a fastening mode to facilitate a user to quickly contain and access a flexible enclosure, such as a bag unit or a piece of clothing. 
     b) Description of the Prior Art 
     In a modern industrial society which is highly developed, a need for most people to carry all kinds of personal belongings in a simpler and handier way has been increased significantly. For example, to reduce the use of plastic bags for environmental protection, a person should bring his or her own recycle shopping bag while shopping in a mall. In addition, to keep from cold or rain due to temperature change or when a raining season comes, he or she should carry personally a thin overcoat, a windbreaker or all kinds of clothing. However, the existing related structures which are designed to provide a user to fold and contain, whether being applied to the recycle shopping bag, the thin overcoat, the windbreaker or all kinds of clothing, are not able to achieve the effects of simplicity, quick containing and accessing. Furthermore, as being limited to a product framework, these existing structures are only provided with a single function of containing and not equipped with a complex function of containing objectives and providing a design of funny appearance at a same time. 
     Taking as an example the existing recycle shopping bag, the thin overcoat or the windbreaker that is carried personally, a mode of roll-up for containing is usually applied. Referring to  FIG. 1 , it shows a schematic view of an ordinary recycle shopping bag in an unfolded state. The recycle shopping bag includes primarily a bag unit  3 , a handle  31 , a cover piece  300 , a male containing piece  304  and a female containing piece  305 , wherein the cover piece  300  further includes a fixing end  302  and an open end  303 , and is fixed at an exterior side of the bag unit  3  by the fixing end  302 . The male containing piece  304  is provided at a proper position of the open end  303  and the female containing piece  305  is provided at a position corresponding to an upper side of the male containing piece  304  by a proper distance. Referring to  FIG. 2 , it shows the ordinary recycle shopping bag which is rolled up. Upon containing, the bag unit  3  is first folded to form a same width as that of the cover piece  300  and is then rolled up underneath the open end  303  of the cover piece  300 , along with the handle  31 . When the bag unit  3  is rolled up to result in a same size of the cover piece  300 , the bag unit  3  is next contained by the male containing piece  304  of the open end  303  and the female containing piece  305  is fixed, enabling the bag unit  3  to be fixed underneath the cover piece  300  after being rolled up. 
     In addition to the abovementioned recycle shopping bag, the personal thin overcoat or the windbreaker (not shown in the drawings) sold on existing markets also uses the similar roll-up mode and is provided with a single function that only the size can be reduced after roll-up, not having other functions of use. Therefore, it is very imperfect for the user, as the convenience of use and the complex multi-function cannot be provided. 
     SUMMARY OF THE INVENTION 
     The primary object of the present invention is to provide a cover-type containing structure for flexible enclosures, which uses a fastening mode to facilitate a user to quickly contain and access a flexible enclosure such as a bag unit or a piece of clothing, as well as to provide a complex function of using a smaller holding portion and a larger containing space at a same time, under an unfolded state. The present invention includes primarily a front cover sheet, a rear cover sheet, a connection portion and a flexible enclosure, wherein the front cover sheet is provided with a first joining edge and a cover piece, the rear cover sheet is provided with a cover assembly corresponding to the cover piece and the connection portion is provided underneath the front cover sheet at a position opposite to the rear cover sheet, thereby connecting the two sheets. The flexible enclosure is provided with a second joining edge which is engaged with the opposite first joining edge of the front cover sheet, thereby fixing the front cover sheet and the flexible enclosure. 
     A second object of the present invention is to provide a cover-type containing structure for flexible enclosures, wherein an exterior side of the front cover sheet or an inner or exterior side of the rear cover sheet is further provided with a holding portion to provide an additive function of putting in an objective, in addition to containing the flexible enclosure. Furthermore, a side wall of the containing structure that is connected with the holding portion can be further provided with a buckle and a belt to facilitate a user to carry as a bag unit when necessary. 
     A third object of the present invention is to provide a cover-type containing structure for flexible enclosures, wherein the second joining edge is partially engaged with the first joining edge and a containing port is formed at a place where the first joining edge is not engaged with the second joining edge. When the unfolded flexible enclosure is accessed, the opened rear cover sheet can be put into the containing space between the front cover sheet and the flexible enclosure from the containing port. 
     A fourth object of the present invention is to provide a cover-type containing structure for flexible enclosures, wherein a side wall is provided between the front cover sheet and the cover piece; whereas, the flexible enclosure is provided with a joining portion to connect with the corresponding side wall. The joining portion assumes an annulus-like unit, a radius of which is a little smaller than that of the side wall and an interior of which is formed with the containing space. As the side wall is overlapped and encloses the joining portion and an upper wall of the annulus-like joining portion is abutted toward an upper wall of the side wall, a first containing portion will be formed in an un-abutted space between a lower wall of the joining portion and the side wall, thereby containing the folded rear cover sheet. An inner containing space of the annulus-like joining portion is combined with the front cover sheet to form a second containing portion which further includes a port to connect with the flexible enclosure, thereby allowing the folded flexible enclosure to be contained in the second containing portion from the port. 
     A fifth object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a bag unit and is provided with an extension function by an extension portion to extend and put the holding portion at a bottom in the flexible enclosure, wherein an end of the extension portion is connected to the second joining edge and the other end is connected to the first joining edge. Therefore, if the holding portion is loaded too heavily, the holding portion can be extended and put at the bottom in the flexible enclosure by the extension portion, without causing an opening to be suspended and deformed, as the holding portion which is connected to the opening is too heavy. 
     A sixth object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a piece of clothing combined with a bag unit carried on a back or at a side and snapped horizontally to a user&#39;s waist. The exterior side of the front cover sheet or the inner or exterior side of the rear cover sheet is further connected with the holding portion to provide the additive function of putting in an objective, in addition to containing the clothing. A side or a rear of the containing structure that is connected with the holding portion can be further provided with an outer belt to facilitate using as a side pack, a backpack or a waist bag. When the clothing is contained, the outer belt of the rear cover sheet can facilitate carrying the bag unit and the clothing that is contained in the containing space. 
     A seventh object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a piece of clothing combined with a bag unit. The present invention is further provided with plural through-holes for the clothing, allowing plural end parts of an inner belt (single shoulder strap or dual shoulder strap) to pass through the through-holes of the clothing and to be engaged with the bag unit. Next, the first joining edge is engaged with the corresponding second joining edge to fix the front cover sheet and the clothing, wherein an upper end and a lower end of the inner belt pass through respectively the plural through-holes of the clothing to connect with an upper rim and a lower rim of the front cover sheet, such that weight of the bag unit can be supported when a user is wearing the clothing. 
     An eighth object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a piece of clothing combined with a bag unit. The present invention is provided with a mask unit between the front cover sheet and the rear cover sheet. A side of the mask unit is provided with a connection side to connect with the bag unit. The connection side is located at an upper rim of the mask unit and is connected with the upper rim of the front cover sheet or the first joining edge. In addition, the mask unit is further provided with a sheath piece to sheath and fix the mask unit on an outer periphery of the bag unit from top to bottom, thereby achieving a rain-proofing effect for the bag unit. 
     A ninth object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a piece of clothing combined with a bag unit. The clothing and the bag unit are loosely or fixedly connected. For the fixed connection mode, the first joining edge and the second joining edge are engaged by gluing, hot pressing or sewing. For the loose connection mode, on the other hand, the first joining edge and the second joining edge are added respectively with a first movable joining piece and a second movable joining piece (such as a zipper, a snap latch or a hook-and-loop fastener), thereby providing a movable dismantlement function to the clothing and the bag unit. Therefore, when the clothing or the bag unit is damaged or gets dirty, it can be dismantled and replaced for use. 
     A tenth object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a piece of clothing combined with a bag unit. The rear cover sheet is provided with a second holding portion; the containing mode of the rear cover sheet and the second holding portion is that by using the containing port or the containing portion, the rear cover sheet is put into the containing space between the front cover sheet and the clothing. In addition, the second holding portion, after the rear cover sheet has been put in, is located inside a pocket of the clothing. The pocket is provided with a pocket layer and the second holding portion is above the pocket layer. As the pocket is connected with the second holding portion, when wearing the clothing, the user can easily put his or her hand into an opening of the pocket to take an objective, such as a wallet or a cell phone, which was originally put in the second holding portion of the bag unit, out of the pocket. 
     An eleventh object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a hat. The front cover sheet is a little larger than the rear cover sheet and both sheets are indented cover units, opposite to each other and in a semicircular shape. The cover sheets are connected with each other by the connection portion, such that the front cover sheet can be entirely sheathed on an exterior side of the rear cover sheet, thereby forming the containing space between the front cover sheet and the rear cover sheet. Therefore, the flexible enclosure (rain coat) can be put into the containing space of this hat structure while not in use, and can be used to shade from sun or keep warm when the user goes out everyday. But when it rains, the flexible enclosure (rain coat) can be taken out of the containing space for use. 
     A twelfth object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is applied to a piece of clothing worn on an objective (including a pet), such as a rain coat or a windbreaker used for a dog. A left side and a right side of the front cover sheet are connected respectively with a male snap and a female snap. When wearing, the front cover sheet is aligned underneath and the rear cover sheet is aligned above a body of the objective (pet); whereas, by fixing the male snap with the female snap, the front and rear cover sheets are worn and fixed on the body of the objective (pet). When using the flexible enclosure (clothing), the rear cover sheet is opened by the cover piece and the cover assembly, and then the flexible enclosure (clothing) is taken out, unfolded and covered on the pet. In a mean time, the rear cover sheet is put in through the containing port, allowing the rear cover sheet to be contained in the containing space between the front cover sheet and the flexible enclosure (clothing). A front side of the containing structure is provided with an annular belt, above which is a fixing ring, at a place connecting to front sides of the front and rear cover sheets. Therefore, the user can hook a pull rope, which is provided with a hook ring, at the fixing ring to pull the objective (pet) on a ground. The embodiment can be also used for any objective, including all kinds of bags, articles for daily use, people (infants) or animals. 
     A thirteenth object of the present invention is to provide a cover-type containing structure for flexible enclosures, which is used in an objective to be carried (including a pet). The flexible enclosure (bag) is primarily folded from the extension portion and is then contained between the front cover sheet and the rear cover sheet. When wearing the flexible enclosure (bag), the rear cover sheet is aligned underneath and the front cover sheet is aligned above the body of a pet, followed by fixing the male snap with the female snap to wear and fix the front cover sheet and the rear cover sheet on the body of the objective (pet). When using the flexible enclosure (bag), the front cover sheet is opened by the cover piece and the cover assembly, the flexible enclosure (bag) is taken out of the containing space between the front sheet and the rear cover sheet and then unfolded. When in use, the objective (pet) is put into the flexible enclosure (bag) from the opening from bottom to top and then the flexible enclosure (bag), which is loaded with the objective (pet), is carried by a hand or on a shoulder with a handle. A front side of the containing structure is provided with an annular belt, above which is a fixing ring, at a place connecting to the front sides of the front and rear cover sheets. Therefore, the user can hook a pull rope, which is provided with a hook ring, at the fixing ring and can selectively contain the flexible enclosure (bag) between the front cover sheet and the rear cover sheet. The objective (pet) can be pulled on a ground by hooking the pull rope at the fixing ring, or the front cover sheet can be opened to load the objective (pet) into the unfolded flexible enclosure (bag) and then the flexible enclosure (bag), which is loaded with the object (pet), can be carried by a hand or on a shoulder, with a handle. The present embodiment can also be used for any objective, including all kinds of bags, articles for daily use, people (infants) or animals. 
     A fourteenth object of the present invention is to provide a cover-type containing structure for flexible enclosures, wherein the exterior side of the front cover sheet and the exterior side of the flexible enclosure can be further provided with corresponding textures and patterns to improve a sense of aesthetics or contrast to a different visual effect. When the holding portion is used alone, the front cover sheet and the holding portion will manifest the partial textures or patterns. On the other hand, when the flexible enclosure is unfolded, the front cover sheet and the holding portion can manifest the textures or patterns corresponding to the flexible enclosure, thereby improving a sense of aesthetics, providing a funny appearance and contrasting to a different visual effect. 
     To enable a further understanding of the said object and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a schematic view of a conventional shopping bag in an unfolded state. 
         FIG. 2  shows a schematic view of the conventional shopping bag which is rolled up. 
         FIG. 3  shows an exploded view of a first embodiment of the present invention in an unfolded state. 
         FIG. 4  shows a schematic view of the first embodiment of the present invention in a contained state. 
         FIG. 5  shows a schematic view of the first embodiment of the present invention in an unfolded state. 
         FIGS. 6 to 9  show schematic views of a cross section of the first embodiment of the present invention in the contained and unfolded states. 
         FIG. 10  shows an exploded view of a second embodiment of the present invention in an unfolded state. 
         FIG. 11  shows a three-dimensional schematic view of the second embodiment of the present invention in a contained state. 
         FIG. 12  shows a three-dimensional schematic view of the second embodiment of the present invention in an unfolded state. 
         FIG. 13  and  FIG. 14  show partial schematic views of the second embodiment of the present invention in the unfolded state. 
         FIGS. 15 to 18  show schematic views of a cross section of the second embodiment of the present invention in the contained and unfolded states. 
         FIGS. 19 to 23  show schematic views of containing steps of the first and second embodiments of the present invention. 
         FIG. 24  shows an exploded view of a first implementation of the present invention to a piece of clothing, in an unfolded state. 
         FIG. 25  shows a schematic view of the first implementation of the present invention to the clothing, after containing. 
         FIG. 26  shows a schematic view of the first implementation of the present invention to the clothing, in a partially unfolded state. 
         FIG. 27  shows a schematic view of the first implementation of the present invention to the clothing, in the unfolded state. 
         FIG. 28  and  FIG. 29  show schematic views of expansion operations of the first implementation of the present invention to the clothing. 
         FIG. 30  and  FIG. 31  show schematic views of the first implementation of the present invention to the clothing, after unfolding. 
         FIG. 32  and  FIG. 33  show schematic views of a second implementation of the present invention to the clothing, in an unfolded state. 
         FIG. 34  shows a schematic view of a third implementation of the present invention to the clothing, in a partially unfolded state. 
         FIGS. 35 to 39  show schematic views of an unfolding process of a third embodiment of the present invention which is used in the clothing. 
         FIG. 40  shows an exploded view of an unfolded state of the third embodiment of the present invention which is used in the clothing. 
         FIGS. 41 to 44  show schematic views of an unfolded state of a fourth embodiment of the present invention which is used in the clothing. 
         FIG. 45  shows a schematic view of the fourth embodiment of the present invention, in a partially unfolded state. 
         FIG. 46  shows a cross-sectional view of the fourth embodiment of the present invention, in an assembly state. 
         FIGS. 47 to 49  show schematic views of a partial assembly state and an unfolded state of another variation of the fourth embodiment of the present invention. 
         FIG. 50  shows a cross-sectional view of another variation of the fourth embodiment of the present invention, in an assembly state. 
         FIGS. 51 and 52  show a schematic view of an unfolded state and an exploded view, according to another variation of the fourth embodiment of the present invention. 
         FIGS. 53 to 55  show schematic views of an unfolding process of a fifth embodiment of the present invention. 
         FIGS. 56 to 58  show a schematic view of an unfolding process and exploded views, according to a sixth embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to  FIGS. 3 to 5 , a first embodiment of the present invention comprises primarily a front cover sheet  1 , a rear cover sheet  2 , a connection portion  12  and a flexible enclosure  3 , wherein an edge of the front cover sheet  1  is provided with a first joining edge  131  and a cover piece  11 . The first joining edge  131  can be also provided at the rear cover sheet  2 , between the front cover sheet  1  and the rear cover sheet  2  or at the connection portion  12 . An edge of the rear cover sheet  2  is provided with a cover assembly  21  which corresponds to the cover piece  11 ; whereas, the cover piece  11  and the cover assembly  21  are a single-headed zipper and include a first pull piece  110 . The connection portion  12  is provided underneath the front cover sheet  1 , at a corresponding position above the rear cover sheet  2  to connect the two sheets. For most of the embodiments as illustrated in the present invention, the flexible enclosure  3  is provided with a second joining edge  331  which is engaged with the first joining edge  131  at the first cover sheet  1  and fixes the front cover sheet  1  on a surface of the flexible enclosure  3  primarily. 
     An exterior side of the front cover sheet  1  can be further connected with a holding portion  4  by which another additive function of putting in an objective is provided, in addition to containing the flexible enclosure  3 . The holding portion  4  is provided with a switching piece  41  and a switching assembly  42  to facilitate a user to open and close the holding portion  4  and access an objective therein at any time, wherein the switching mode of the switching piece  41  and the switching assembly  42  includes a zipper, a hook-and-loop fastener, a snap or a magnetic button. In the present embodiment, in addition to that the exterior side of the front cover sheet  1  can be connected with the holding portion  4 , an interior side (as shown in  FIGS. 20 to 23  of a second embodiment) or an exterior side (not shown in the drawings) of the rear cover sheet  2  can be further connected with the holding portion  4  to form a bag unit  10 . As the structures are roughly the same, further description is not disclosed. In the present embodiment, a side of the rear cover sheet  2  corresponding to the flexible enclosure  3  can be further provided with a fixing piece  22  and a fixing assembly  32  to fix the rear cover sheet  2  on a surface of the flexible enclosure  3 , such that the rear cover sheet  2  will not be suspended from the surface of the flexible enclosure  3  and swing; the fixing piece  22  and the fixing assembly  32  include a zipper, a hook-and-loop fastener, a snap latch or a magnetic button. 
     Besides, in addition to the above-mentioned fixing structure for the rear cover sheet  2 , the fixing assembly  32  can also be provided on an exterior surface of the holding portion  4 , corresponding to the position of the fixing piece  22  of the rear cover sheet  2 . The turned rear cover sheet  2  can be fixed on the exterior surface of the holding portion  4  (as shown in  FIG. 5 ) by the fixing piece  22  and the fixing assembly  32 . For this embodiment, the holding portion  4  is provided on an exterior surface of the front cover sheet  1  (as shown in  FIG. 3 ). However, under the condition there&#39;s no holding portion  4  provided in the embodiment, the fixing assembly  32  is directly provided on the exterior surface of the front cover sheet  1 , allowing the fixing piece  22  of the rear cover sheet  2  to be aligned with and fixed at the fixing assembly  32  provided on the front cover sheet  1  (not shown in the drawing), after the rear cover sheet  2  has been turned. Therefore, the rear cover sheet  2  will not be suspended from the surface of the flexible enclosure and swing. The fixing piece  22  and the fixing assembly  32  include a zipper, a hook-and-loop fastener, a snap latch or a magnetic button, and if the zipper is used for implementation, then a double-headed zipper will allow the turned rear cover sheet  2  to be fixed on the exterior surface of the front cover sheet  1  or the holding portion  4  (not shown in the drawing). Accordingly, the fixing piece  22  provided by the rear cover sheet  2  corresponds to the fixing assembly  22  provided on the surface of the flexible enclosure  3 , the front cover sheet  1  or the holding portion  4 . The rear cover sheet  2  is fixed at the flexible enclosure  3 , the front cover sheet  1  or the holding portion  4  by the fixing piece  22  and the fixing assembly  32 , allowing the rear cover sheet  2  not to be suspended from the surface of the flexible enclosure  3  and swing. 
     Referring to  FIGS. 6 to 9 , as the second joining edge  331  and the first joining edge  131  are engaged partially and a containing port  301  is formed at a place where the two edges are not engaged, when accessing the unfolded flexible enclosure  3 , the rear cover sheet  2  can be put into a containing space  30  between the front cover sheet  1  and the flexible enclosure  3  from the containing port  301 . On the contrary, after containing the folded flexible enclosure  3 , the rear cover sheet  2  can be taken out of the containing port  301 ; whereas, the rear cover sheet  2  and the front cover sheet  1  can be fixed by a single-headed zipper and the first pull piece  110  (as shown in  FIG. 5 ). Besides, to stably engage the front cover sheet  1  at the flexible enclosure  3  and to allow the rear cover sheet  2  that is contained in the containing port  301  to be latched into the containing space  30  without falling out of the containing port  301 , a preferred structure of the present embodiment is that a circumferential length of the first joining edge  131  which is partially engaged with the second joining edge  331  is set to be at least a half of an entire circumferential length of the front cover sheet  1 . 
     Referring to  FIGS. 10 to 12 , in addition to the components included in the first embodiment, a second embodiment of the present invention further includes a side wall  13  between the front cover sheet  1  and the cover piece  11 , with that the flexible enclosure  3  is provided with a joining portion  33  corresponding to the side wall  13 . The joining portion  33  assumes an annulus-like unit, a radius of which is a little smaller than that of the side wall  13  and an interior of which is formed with the containing space  30 . The second joining edge  331  is abutted at and connected with the first joining edge  131 , allowing the side wall  13  to overlap and enclose the joining portion  33 . When the flexible enclosure  3  is folded and contained in a second containing portion  35  and is closed by the cover piece  11  and the cover assembly  21 , the side wall  13  of the containing structure that is connected with the holding portion  4  can be further provided with a buckle  15  and a belt  16  to serve as a backpack, facilitating a user to carry personal belongings. As described above and same as the first embodiment, the holding portion  4  of the present embodiment is provided with the switching piece  41  and the switching assembly  42  to facilitate a user to open and close the holding portion  4  and access an objective therein at any time; the switching mode includes a zipper, a hook-and-loop fastener, a snap latch or a magnetic button. 
     Referring to  FIGS. 13 to 18 , as the second joining edge  331  is abutted at a top rim of and connected with the first joining edge  131 , an upper wall of the annulus-like joining portion  33  is abutted toward an upper wall of the side wall  13 , forming a first containing portion  14  in an un-abutted space between a lower wall of the joining portion  33  and the side wall  13  to contain the folded rear cover sheet  2  (or any wall of the annulus-like joining portion  33  is abutted toward any wall of the side wall  13  to form the first containing portion  14  in the un-abutted space). Moreover, the second containing portion  35  is formed after the inner containing space  30  of the annulus-like joining portion  33  has been combined with the front cover sheet  1 , and the second containing portion  35  further includes a port  34  to connect with the flexible enclosure  3 . Therefore, the folded flexible enclosure  3  can be contained in the second containing portion  35  through the port  34 . On the other hand, the rear cover sheet  2  is further provided with a fixing piece  22  which is located underneath the first containing portion  14  and a fixing assembly  32  which is located underneath the joining portion  33 . By the fixing piece  22  and the fixing assembly  32 , the folded rear cover sheet  2  can be contained in the first containing portion  14  and then fixed, wherein the fixing piece  22  and the fixing assembly  32  are a hook-and-loop fastener or a snap latch. 
     As shown in  FIGS. 19 to 23 , when a user is to fold and contain the flexible enclosure  3  in the second containing portion  35  ( FIG. 20 ), he or she should first put downward the holding portion  4  and the exterior side of the front cover sheet  1 . At this time, the flexible enclosure  3  and the rear cover sheet  2  will face upward and the rear cover sheet  2  will be lifted open. When containing, the flexible enclosure  3  is folded from outside to inside to be located in the containing space  30  between the front cover sheet  1  and the rear cover sheet  2 , whereas the front cover sheet  1  and the rear cover sheet  2  are closed by the cover piece  11  and the cover assembly  21 . In the present embodiment, in addition to that the exterior side of the front cover sheet  1  can be connected with the holding portion  4 , the interior side or the exterior side (not shown in the drawings) of the rear cover sheet  2  can be further provided with the holding portion  4  which is equipped with the switching piece  41  and the switching assembly  42 , facilitating a user to open and close the holding portion  4  to access an objective therein at any time. 
     In addition to being applied to the flexible enclosure which includes the recycle shopping bag or other kind of bag, the containing structure disclosed above can be further applied to implementations of all kinds of clothing, such as a sport shirt, an overcoat and a piece of clothes. Referring to  FIG. 24 , a first implementation of the present invention is a flexible enclosure  3  (clothing) combined with a bag unit  10 , which is a backpack structure including a front cover sheet  1 , a rear cover sheet  2 , a connection portion  12 , an outer belt  16  and a flexible enclosure  3  (clothing), wherein an edge of the front cover sheet  1  is provided with a first joining edge  131  and a cover piece  11 ; whereas, the first joining edge  131  is provided at a parallel side of the bag unit  10  corresponding to the flexible enclosure  3  (clothing), on the edge of the front cover sheet  1  in the drawing. An edge of the rear cover sheet  2  is provided with a cover assembly  21  corresponding to the cover piece  11 ; whereas, the cover piece  11  and the cover assembly  22  can be implemented as a zipper. The connection portion  12  is provided at a corresponding position between a side of the front cover sheet  1  and the rear cover sheet  2  to connect the two sheets. The clothing  3  includes a second joining edge  331  and an inner belt  6 , wherein the second joining edge  331  is engaged with the first joining edge  131  of the front cover sheet  1  and fixes the front cover sheet  1  at a rear position of the flexible enclosure  3  (clothing). For the flexible enclosure  3  (clothing) and the bag unit  10 , in addition to using a fixed joining mode (gluing, hot pressing or sewing) for the first joining edge  131  and the second joining edge  331 , the first joining edge  131  and the second joining edge  331  can be also added respectively with a first movable joining piece  130  and a second movable joining piece  330  (such as a zipper, a snap latch, a magnetic button or a hook-and-loop fastener), thereby providing the flexible enclosure  3  (clothing) and the bag unit  10  with a movable dismantlement function that when the flexible enclosure  3  (clothing) or the bag unit  10  is damaged or gets dirty, it can be dismantled and replaced for use. 
     The flexible enclosure  3  (clothing) can be further opened with plural through-holes  332 , allowing plural end parts of the inner belt  6  (a single shoulder strap or a dual shoulder strap at back) to pass through the through-holes  332  from the interior of the flexible enclosure  3  (clothing) to combine outward with the bag unit  10 . Next, the first joining edge  131  is engaged with the corresponding second joining edge  331  to fix the front cover sheet  1  and the flexible enclosure  3  (clothing), wherein an upper end part and a lower end part of the inner belt  6  pass through the plural through-holes  332  of the flexible enclosure  3  (clothing) and then are connected with the upper rim and the lower rim of the front cover sheet  1 , such that weight of the bag unit  10  can be supported when a user is wearing the flexible enclosure  3  (clothing). 
     Besides, a mask unit  7  is provided between the front cover sheet  1  and the rear cover sheet  2 . A side of the mask unit  7  is provided with a connection side  71  which is connected with the bag unit  10 ; the connection side  71  is provided at an upper rim of the mask unit  7  and is connected with the upper rim of the first joining edge  131  of the front cover sheet  1 . In addition, the mask unit  7  is further provided with a sheath piece  72  which can sheath the mask unit  7  from top to bottom at an outer periphery of the bag unit  10 , thereby achieving a rain-proofing effect for the bag unit  10 . 
     The rear cover sheet  2  is provided with an outer belt  16  which is a dual belt or a single belt at a back (not shown in the drawing); whereas, an upper end and a lower end of which are provided respectively at an upper side and a lower side of the exterior side of the rear cover sheet  2 , allowing a user to carry the bag unit  10  and the flexible enclosure  3  (clothing) which is contained in the containing space  30  from the outer belt  16  of the rear cover sheet  2 , when the flexible enclosure  3  (clothing) is contained. The outer belt  16  is loosely or fixedly connected with the bag unit  10  (which belongs to a prior art and is thus not described further). In the present embodiment, the exterior side of the front cover sheet  1  is connected with a holding portion  4  to provide an additive function of putting in an objective, in addition to containing the clothing  3 . The holding portion  4  is provided with a switching piece  41  and a switching assembly  42  to facilitate a user to open and close the holding portion  4  to access an objective therein at any time, wherein the switching mode of the switching piece  41  and the switching assembly  42  includes a zipper, a hook-and-loop fastener, a snap latch or a magnetic button. In the present embodiment, in addition to that the exterior side of the front cover sheet  1  can be connected with the holding portion  4 , the inner side or the exterior side (not shown in the drawing) of the rear cover sheet  2  can be further connected with the holding portion  4 . As the structures are roughly the same, no further description is provided. 
     As shown in  FIGS. 25 to 31 , the flexible enclosure  3  (clothing) is taken out of the containing space  30  of the bag unit  10  and then worn on a user, wherein the front cover sheet  1  is fixed at a rear side, close to a center, of the flexible enclosure  3  (clothing); whereas, the holding portion  4  is connected at the exterior side of the front cover sheet  1 , allowing a user to put in an objective. A front side of the flexible enclosure  3  (clothing) is provided with a left and right forepart  334 , each of which is further provided with a closing piece  333 . After wearing the flexible enclosure  3  (clothing), a user can use the closing pieces  333  to close the left and right foreparts  334 . 
     The rear cover sheet  2  is connected with the front cover sheet  1  from the connection portion  12  and when the rear cover sheet  2  is not yet contained in the containing space  30 , it is located underneath the holding portion  4 . As shown in  FIG. 29  and  FIG. 30 , after the rear cover sheet  2  has been contained in the containing space  30 , it will be hidden behind the holding portion  4  and lie between the holding portion  4  and the flexible enclosure  3  (clothing). As shown in  FIG. 26 , when the flexible enclosure  3  (clothing) and the mask unit  7  are not used, the holding portion  4  is first made to face downward and the rear cover sheet  2  is lifted open to expose the containing space  30 , facilitating putting the flexible enclosure  3  (clothing) and the mask unit  7  into the containing space  30  after folding. When folding, the mask unit  7  and the flexible enclosure  3  (clothing) can be folded downward and the flexible enclosure  3  (clothing) is folded toward a center from four sides. At this time, the mask unit  7  and the flexible enclosure  3  (clothing) will become a rectangle after folding, a little smaller than the front cover sheet  1  and above the front cover sheet  1 , to be contained in the containing space  30  and closed by the cover piece (assembly)  11  ( 21 ), as shown in  FIG. 25 . After the containing space  30  has been closed, the flexible enclosure  3  (clothing) is put into the containing space  30  and a user can still open the holding portion  4  from the switching piece (assembly)  41  ( 42 ) above the holding portion  4  to put into or access an objective. When the flexible enclosure  3  (clothing) is contained, the flexible enclosure  3  (clothing) and the inner belt  6  are closed in the containing space  30  between the rear cover sheet  2  and the front cover sheet  1  by the cover piece  11  and the cover assembly  21  and a user can utilize the outer belt  16  above the rear cover sheet  2  (as shown in  FIGS. 29 to 31 ) and use the holding portion  4  as the bag unit  10 . 
     Referring to  FIG. 32  and  FIG. 33 , a second implementation of the present invention is a flexible enclosure  3  (clothing) combined with a bag unit  10 , which is a bag unit  10  worn at a side (usually called a side pack). The structures and elements included are all the same as those of the bag unit  10  in the first embodiment, with a primary difference being that the bag unit  10  is worn at a side or at a front of a human body by a single belt. Therefore, the outer belt  16  (not shown in the drawings) and the inner belt  6  are all connected by the single belt at a left and right end of the bag unit  10 . When the flexible enclosure  3  (clothing) is not used, the containing mode is the same as that of the first embodiment where the flexible enclosure  3  (clothing) and the inner belt  6  are contained in the containing space  30  (not shown in the drawings) after folding, and are closed by the cover piece (assembly)  11  ( 21 ). When the flexible enclosure  3  (clothing) is contained, the storage function of the bag unit  10  can be still used. In addition, two sides of the bag unit  10  are provided respectively with a buckle  15  and an outer belt  16  (not shown in the drawings) which is movably engaged with the buckle  15 , allowing a user to carry on a shoulder. 
     As shown in  FIG. 34 , a third embodiment of the present invention is a flexible enclosure  3  (clothing) combined with a bag unit  10 , which is transversally fixed at a user&#39;s waist (usually called a waist bag). The structures and elements included are the same as those of the side bag unit  10  in the second embodiment, with a primary difference being that the bag unit  10  is connected to a left and right side by the outer belt  16  and is transversally fixed at a user&#39;s waist after engaging a male snap  161  with a female snap  162  at open ends of the outer belt  16 . As an inner size of the holding portion  4  of the bag unit  10  of the present embodiment is smaller than that of the bag unit  10  in the abovementioned two embodiments, the inner belt  6  is not needed when the loading is not heavy, such that the weight of the bag unit  10  can be supported when a user is wearing the flexible enclosure  3  (clothing). When the flexible enclosure  3  (clothing) is not used, the containing mode is the same as that of the two abovementioned embodiments where the flexible enclosure  3  (clothing) is contained in the containing space  30  after folding, and is closed by the cover piece (assembly)  11  ( 21 ). When the flexible enclosure  3  (clothing) is contained, the storage function of the bag unit  10  can be still used. When the clothing  3  is contained, the outer belt  16  which is transversally connected at two sides of the bag unit  10  can be fixed on a waist by a user. Besides, the outer belt  16  is loosely or fixedly connected with the bag unit  10  (which belongs to a prior art and is thus not described further). 
     As shown in  FIGS. 35 to 40 , the front cover sheet  1  is fixed at a surface of a pocket  335  on the flexible enclosure  3  (clothing). A surface of the front cover sheet  1  is provided with a switching piece  41  and a switching assembly  42 ; whereas, a rim of the front cover sheet  1  is fixed at an exterior side of the flexible enclosure  3  (clothing), such that a range within the rim of the front cover sheet  1  can be covered on the surface of the flexible enclosure  3  (clothing), thereby constituting the holding portion  4  to contain objectives. 
     To allow the rear cover sheet  2  not to be suspended from the surface of the flexible enclosure  3  (clothing) and swing, the rear cover sheet  2  can also be provided with a fixing piece  22  corresponding to a fixing assembly  32  provided on the flexible enclosure  3  (clothing). By the fixing piece  22  and the fixing assembly  32 , the rear cover sheet  2  can be fixed on the surface of the flexible enclosure  3  (clothing) (referring to  FIG. 3 ); the fixing piece  22  and the fixing assembly  32  include a zipper, a hook-and-loop fastener, a snap latch or a magnetic button. 
     The rear cover sheet  2  of a waist bag of the present embodiment is provided with a second holding portion  20 ; whereas, the containing mode of the rear cover sheet  2  and the second holding portion  20  is as described in the above-mentioned embodiments. As the second joining edge  331  and the first joining edge  131  are joined locally, and the containing port  301  (as shown in  FIGS. 6 to 9 ) or the containing portion  14  (as shown in  FIGS. 15 to 18 ) is formed at a place where the two edges are not engaged, when accessing the flexible enclosure  3  (clothing), the rear cover sheet  2  can be put into a containing space  30  between the front cover sheet  1  and the flexible enclosure  3  (clothing) from the containing port  301  or the containing portion  14 . In addition, after the rear cover sheet  1  has been put in, the second holding portion  20  is located inside the pocket  335  of the flexible enclosure  3  (clothing). The pocket  335  is provided with a pocket layer  336  and the second holding portion  20  is located above the pocket layer  336  (as shown in  FIG. 40 ). As the pocket  335  is connected with the second holding portion  20 , the user can easily put his or her hand into a pocket opening  337  of the pocket  335  when wearing the flexible enclosure  3  (clothing), to take an objective, which was previously put in the second holding portion  20 , out of the bag unit  10  (waist bag), such as a wallet or a cell phone. 
     A rim of the cover assembly  21  of the rear cover sheet  2  is further provided with a side wall  13 . Two sides of the side wall  13  are connected with an outer belt  16 , allowing the user to carry on a shoulder for use (not shown in the drawings). In addition, two ends of the outer belt  16  can be loosely or fixedly connected with the side wall  13 . Besides, the outer belt  16  can be connected with a left side and a right side of the rear cover sheet  2  and is transversally fixed at a user&#39;s waist by engaging the male and female snaps  161 ,  162  at the open ends of the outer belt  16 . The rear cover sheet  2  is provide with a first interlining  23  which is equipped with a left and right opening  232 ,  232 . When transforming the waist bag into the flexible enclosure  3  (clothing) for use, the user can put two ends of the outer belt  16  into the first interlining  23  from the left and right opening  231 ,  232  at the first. 
     To allow the rear cover sheet  2 , which has been put into the containing space, not to fall out of the containing port  301 , the rear cover sheet  2  is provided at least with a fixing piece  22  and a fixing assembly  32  which is at a side opposite to the flexible enclosure  3  (clothing). The fixing assembly  32  is provided at the surface of the flexible enclosure  3  (clothing) and behind the front cover sheet  1 . By the fixing piece  22  and the fixing assembly  32 , the rear cover sheet  2  is fixed in the containing space between the front cover sheet  1  and the flexible enclosure  3  (clothing); the fixing piece  22  and the fixing assembly  32  include a zipper, a hook-and-loop fastener, a snap latch or a magnetic button. Moreover, the connection portion  12 , which is located between the front cover sheet  1  and the rear cover sheet  2 , is provided with a sealing piece  120  which is closed by a sealing assembly  320  opposite to the containing port  301 , allowing the rear cover sheet  2  not to fall out of the containing port  301 ; the sealing piece  120  and the sealing assembly  320  include a zipper, a hook-and-loop fastener, a snap latch or a magnetic button. 
     Referring to  FIGS. 41 to 44 , in addition to being applied to the waist bag, the present invention can be also used in a cell phone pouch or a wallet. The embodiment is about the same structure as the above-mentioned waist bag, wherein the rear cover sheet  2  is provided with a second holding portion  5 ; whereas, the containing mode of the rear cover sheet  2  and the second holding portion  5  is as described in the above-mentioned embodiments. As the second joining edge  331  and the first joining edge  131  are locally engaged and the containing port  301  (as shown in  FIGS. 6 to 9 ) or the containing portion  14  (as shown in  FIGS. 15 to 18 ) is formed at a place where the two edges are not engaged, the flexible enclosure  3  (clothing) should use an even lighter material and a simpler cutting design to reduce a size after folding, such that the size of the folded flexible enclosure  3  (clothing) can be closer to the size of a cell phone pouch or a wallet. The containing mode is the same as the above-mentioned embodiments, wherein by the containing port  301  or the containing portion  14 , the rear cover sheet  2  is put into the containing space  30  between the front cover sheet  1  and the flexible enclosure  3  (clothing); whereas, the second holding portion  20 , after the rear cover sheet  2  has been put in, is located inside the chest pocket  335  of the flexible enclosure  3  (clothing). As the pocket  335  is connected with the second holding portion  20 , the user can easily put his or her hand into a pocket opening  337  of the pocket  335  when wearing the flexible enclosure  3  (clothing), to take an objective, which was originally put in the second holding portion  20 , out of the bag unit  10  (cell phone pouch or wallet), such as a wallet or a cell phone. As shown in  FIG. 38 , the rear cover sheet  2  of the bag unit  10  (cell phone pouch or wallet) can be further provided with a binding strip  163  and an adjustment piece  164 . The adjustment piece  164  can be used to adjust the binding strip  163  to a proper length and to fix the bag unit  10  (cell phone bag or wallet) on an arm of the user or a waist band of the clothes (not shown in the drawing), thereby facilitating carrying. 
     Referring to  FIG. 45  and  FIG. 46 , a fourth embodiment of the present invention applies the flexible enclosure  3  to a hat, comprising primarily the front cover sheet  1 , the rear cover sheet  2 , the connection portion  12  and the flexible enclosure  3 . The front cover sheet  1  is a little larger than the rear cover sheet  2 , and both sheets are indented cover units, opposite to each other and in a semicircular shape. The sheets are connected with each other by the connection portion  12 , allowing the front cover sheet  1  to be entirely sheathed on the exterior side of the rear cover sheet  2 , thereby forming the containing space  30  between the front cover sheet  1  and the rear cover sheet  2 . Therefore, when the flexible enclosure  3  (rain coat) is not in use, it can be put into the containing space  30 . Besides, an edge of the front cover sheet  1  is provided with a first annular edge  111  which is equipped with a cover piece  11 . An edge of the rear cover sheet  2  is provided with a second annular edge  211  which is opposite to the first annular edge  111  of the front cover sheet  1 , and the second annular edge  211  is equipped with the cover assembly  21  which is opposite to the cover piece  11  of the first annular edge  111 . The connection portion  12  is located at the front cover sheet  1 , at a position opposite to a lower rear side of the rear cover sheet  2 , with the connection method of sewing or other means, so that by fixing the cover assembly  21  with the cover piece  11 , the rear cover sheet  2  can be sheathed and sealed in the front cover sheet  1 . On the other hand, a left side and a right side of the front cover sheet  1  can be provided with a pair of male gripe  112  and female gripe  113 , at a location opposite to the user&#39;s ears. In addition, open ends of the male and female gripes  112 ,  113  are provided respectively with a male snap  114  and a female snap  115 . By engaging the male snap  114  with the female snap  115 , the above-mentioned hat can be fixed at the user&#39;s neck to prevent from sliding off. 
     Referring to  FIGS. 46 to 52 , it shows a second embodiment applied to the hat. The primary variation lies in that a rear side of the front cover sheet  1  is elongated and extended to a place close to the user&#39;s neck and a bottom of the elongated part of the front cover sheet  1  is provided with a lower connection portion  203  and a lower cover sheet  200  (as shown in  FIG. 49 ). By connecting the lower connection portion  203  with the lower cover sheet  200 , the lower cover sheet  200  can be turned open from top to bottom, allowing the flexible enclosure (rain coat) to be easily put into or taken out of the containing space  30 . 
     In addition, the connection portion  12 , which is located underneath the front cover sheet  1  and between the rear cover sheet  2 , can be also added with an extension portion or an extension strip  122 , such that the rear cover sheet  2  can be turned downward and the flexible enclosure  3  (rain coat) can be more easily put into or taken out of the containing space  30 . An edge of the lower cover sheet  200  of the present embodiment is provided with a lower annular edge  201  which is equipped with a lower cover piece  204 . A rear edge of the front cover sheet  1  is provided with a third annular edge  202  which is opposite to the lower annular edge  201  of the lower cover sheet  200 , and the third annular edge  202  is equipped with a lower cover assembly  205  which is opposite to the lower cover piece  204  of the lower annular edge  201 , such that the lower cover piece  200  can be positioned and closed in an inner rear side of the front cover sheet  1  by the lower cover piece  204  and the lower cover assembly  205 . As shown in  FIG. 45  and  FIG. 46 , a left side and a right side of the front cover sheet  1 , opposite to the user&#39;s ears, can also be provided with a pair of male and female gripe  112  ( 113 ) and male and female snap  114  ( 115 ), such that the abovementioned hat structure can be fixed at the user&#39;s head to prevent from sliding off. 
     Referring to  FIGS. 53 to 55 , a fifth embodiment of the present invention is roughly the same as the above-mentioned flexible enclosure  3  (clothing) combined with the bag unit  10 , according to the third embodiment. The difference lies in that the present embodiment applies the flexible enclosure  3  (clothing) to the clothing to be worn on a objective (including a pet), such as a rain coat or a windbreaker used for a dog. However, in addition to a pet, the present embodiment can also be used in any objective, including all kinds of bags, articles for daily use, people (infants) or animals (not shown in the drawings). A left side and a right side of the front cover sheet  1  are connected respectively with a male snap  161  and a female snap  162  and when wearing, the front cover sheet  1  is aligned underneath and the rear cover sheet  2  is aligned above the body of an objective (pet), followed by fixing the male snap  161  with the female snap  162  to wear and fix the front and rear cover sheet  1  ( 2 ) on the body of the objective (pet). Furthermore, a second holding portion  20  can be provided above the rear cover sheet  2  to facilitate the user to put in a personal objective needed by the objective (pet) from the second holding portion  20 , such as a tool to clean droppings of the pet. In addition, the flexible enclosure  3  (clothing) is connected between the front cover sheet  1  and the rear cover sheet  2  and the user can cover the flexible enclosure  3  (clothing) on the body of the objective (pet) (as shown in  FIG. 54 ). Besides, the front sides of the front cover sheet  1  and the rear cover sheet  2  are provided with an annular belt  165 , an adjustment piece  166  and a pair of male and female buckle  167  ( 168 ). By the adjustment piece  166 , the size of the annular belt  165  can be adjusted to facilitate wearing the annular belt  165  on the objective (pet), such as a neck, a foreleg or a limb. In addition, the annular belt  165  is fixed by the male and female buckle  167  ( 168 ). A fixing ring  169  is located above the annular belt  165 , at a place connecting to the edge of the front and rear cover sheet  1  ( 2 ), thereby providing for the user to hook a pull rope  171 , which is provided with a hook ring  170 , at the fixing ring  169 , to pull the objective (pet) to walk on a ground by the pull rope  171 . 
     When the flexible enclosure  3  (clothing) is in a contained state, the containing port is hidden between the front cover sheet  1  and the flexible enclosure  3  (clothing) as well as hidden at a side of the objective (pet) (as shown in  FIG. 53 ). When the flexible enclosure  3  (clothing) is to be used, the rear cover sheet  2  is opened by the cover piece  11  and the cover assembly  21 ; whereas, the flexible enclosure  3  (clothing), which is contained between the front cover sheet  1  and the rear cover sheet  2 , is unfolded and covered on the body of the objective (pet). In the mean time, the rear cover sheet  2  is put in from the containing port  301 , allowing the rear cover sheet  2  to be contained in the containing space  30  between the front cover sheet  1  and the flexible enclosure  3  (clothing) (as shown in  FIG. 54 ). Moreover, the foreparts  334  of the flexible enclosure  3  (clothing) can be closed by a closing piece  333 , allowing the flexible enclosure  3  (clothing) to be covered on the body and the head of the objective (pet), achieving an effect of preventing from wind and rain (as shown in  FIG. 55 ). 
     Referring to  FIGS. 56 to 58 , a sixth embodiment of the present invention applies the flexible enclosure  3  (bag) to the containing structure of an objective to be carried (including a pet), comprising primarily the front cover sheet  1 , the rear cover sheet  2 , the cover piece  11  at the rim of the front cover sheet  1 , the cover assembly  21  at the rim of the rear cover sheet  2  and the flexible enclosure  3  (bag). In addition, an open and closing direction of the cover piece  11  and the cover assembly  21  is aligned with the head of a objective (pet), and the flexible enclosure  3  (bag) is folded by the extension portion  132 , followed by being contained between the front cover sheet  1  and the rear cover sheet  2 ; wherein, a left side and a right side of the front cover sheet  1  are connected respectively with a male snap  161  and a female snap  162 . The present embodiment can also be used for any objective, including all kinds of bags, articles for daily use, people (infants) or animals. 
     When wearing, the rear cover sheet  2  is aligned underneath and the front cover sheet  1  is aligned above the body of the objective (pet), and by fixing the male snap  161  with the female snap  162 , the front and rear cover sheet  1  ( 2 ) can be worn and fixed on the body of the objective (pet). Furthermore, a first holding portion  4  can be provided above the front cover sheet  1  to facilitate the user to put in personal items of the objective (pet) from the first holding portion  4 . When using the present invention, the front cover sheet  1  is opened by the cover piece  11  and the cover assembly  21 ; whereas, after the front cover sheet  1  has been opened and the flexible enclosure  3  (bag) has been unfolded, the front cover sheet  1  can be closed locally and directly by the cover piece  11  and the cover assembly  21  (the present embodiment can also be added with the containing port  301  and the interlining within the rear cover sheet  2 , so as to put the opened front cover sheet  1  into the interlining from the containing port  301 , as shown in  FIG. 57 ). After the flexible enclosure  3  (bag) has been unfolded, its opening  40  should be aligned underneath the pet and the objective (pet) is loaded from bottom to top into the flexible enclosure  3  (bag) from the opening  40 , followed by carrying the flexible enclosure  3  (bag), which is loaded with the objective (pet), by a hand or on a shoulder, with a handle  31 . A front side of the opening  40  of the flexible enclosure  3  (bag) can be configured as a truncated notch, allowing the head of the objective (pet) to be exposed out of the flexible enclosure  3  (bag) from the notch-shaped opening  40 . 
     Same as the above-mentioned embodiments, a front side of the containing structure, according to the present embodiment, is provided with an annular belt  165  above which is a fixing ring  169 , at a place connecting to a front side of the front and rear cover sheet  1  ( 2 ), thereby allowing the user to hook a pull rope  171 , which is provided with a hook ring  170 , at the fixing ring  169 . The user can selectively contain the flexible enclosure  3  (bag) between the front cover sheet  1  and the rear cover sheet  2  and use the pull rope  171  to pull the objective (pet) to walk on a ground. Or, the front cover sheet  1  can be opened and the objective (pet) can be loaded into the unfolded flexible enclosure  3  (bag), followed by carrying the flexible enclosure  3  (bag), which is loaded with the objective (pet), by a hand or on a shoulder, with the handle  30 . 
     For each abovementioned embodiment, the exterior side of the front cover sheet  1  and the exterior side of the flexible enclosure  3  (bag) can be further provided with mutually corresponding textures and patterns to improve a sense of aesthetics and contrast to a different visual effect. When the holding portion  4  is used alone, the front cover sheet  1  and the holding portion  4  can manifest the partial textures or patterns. When the flexible enclosure  3  (bag) is unfolded, the front cover sheet  1  and the holding portion  4  can manifest the textures or patterns contrasting with the flexible enclosure  3  (bag) to improve a sense of aesthetics or exhibit a different visual effect (not shown in the drawings). 
     Accordingly, in addition to the abovementioned embodiments, the present invention can be further applied to other bag units of various functions. 
     It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.