BACKPACK

TECHNICAL FIELD

The present invention relates to a backpack, and more specifically, to a backpack structure which can easily and stably fix items and the like, which may not be put into a storage space portion inside the backpack, to thL-e backpack, and can be used by dividing the storage space portion inside the backpack into a plurality of spaces as needed so as to facilitate entry or exit of the items.

BACKGROUND ART

In general, a backpack is used to conveniently store and carry items, and the usage and form thereof are diversified according to the needs of consumers.

As an example, as shown in FIG. 1, a conventional backpack 500 described in Korean Patent Registration No. 10-2162883 includes a first backpack member 510 provided on both sides thereof with shoulder straps 530, a second backpack member 520 provided on a rear surface of the first backpack member, and an auxiliary loading portion 540 configured to fix bottom surfaces of the first backpack member and the second backpack member to each other to have a predetermined width. The backpack includes a buckle 550 for coupling both side portions of the first backpack member 510 and the second backpack member 520 to each other, wherein at least a lower portion of the auxiliary loading portion 540 is always exposed out of the first backpack member and the second backpack member, the first backpack member and the second backpack member are unfolded in opposite directions even while a width of the auxiliary loading portion is compactly reduced and fixed by pulling both end portions of twines 541 and 542 inserted into twine guide paths 541a and 542a formed at both edges of the auxiliary loading portion, or the auxiliary loading portion is fixed to have a predetermined width by pulling both ends of the twines inserted into the twine guide paths, and a center of gravity of the backpack is prevented from being changed when an item is loaded on the auxiliary loading portion fixed to have the predetermined width by the twines. Reference numerals 511 and 521 not illustrated in FIG. 1 denote slide fasteners, and reference numerals 512 and 522 denote storage members (storage space portions) of the backpack.

In the conventional backpack 500 configured as described above, in order to maintain frames of the first backpack member 510 and the second backpack member 520, particularly, since the first backpack member 510 and the second backpack member 520 have a thick panel on the surfaces facing each other with the auxiliary loading portion 540 interposed therebetween, the weight of the backpack is increased.

Moreover, as another example of the conventional backpack, regarding a structure described in Korean Unexamined Patent Publication No. 10-2005-0032961, a backpack 100 as shown in FIG. 2 includes a base member 101 in contact with the shoulders and the back of a user, a cover portion 102 continuously coupled to a lower end of the base member 101 and configured to open/close the base member 101, a pair of shoulder straps 103 coupled to the base member 101, a handle member 104 used when the user carries the backpack 100 by hand without using the shoulder straps, and a pair of slide fasteners 105′ and 105″ configured to couple or separate the base member 101 and the cover portion 102 to or from each other. The slide fasteners 105′ and 105″ include a fastener ring portion 110 for convenience of opening and closing the cover portion.

In addition, the storage member 106 provided in the backpack is integrally made of a rigid material such as polyester, polyvinyl chloride, leather, bioceramic fiber, or the like, and is divided into a plurality of spaces having different sizes. That is, the storage member 106 is formed so as to have a size corresponding to the entire storage space of the backpack 100, and is detachable from the backpack 100.

The separable storage member 106 of the backpack 100 is divided into four stages with different partition spaces, in which the uppermost stage of the storage member 106 has no partition to divide the inside thereof, in which clothes and the like necessary for the user's travel are arranged and stored, the second and third stages has one partition to divide the stage into two stages, in which relatively small clothes such as socks, underwear, towels, and the like are stored, and the last stage has two partitions to divide the stage into three stages, in which toiletries, cosmetics, and the like are stored.

By dividing the space of the storage member 106 according to each use as described above, items of the user may be organized and stored.

Reference numeral 107 denotes an auxiliary storage portion provided on an inner surface of the cover portion 102, and reference numeral 108 denotes a pen storage portion of the auxiliary storage portion 107.

A wallet, a notebook, and the like are accommodated in the auxiliary storage portion 108, and writing articles are accommodated in the pen storage portion 108.

Reference numeral 109 denotes a corrugated member for pushing provided inside the cover portion 102. A cushion material such as cotton or the like is embedded in the corrugated member 109, thereby preventing damage to the item stored in each partition space of the storage member 106 and preventing the item stored in each partition space from moving to another partition space. Reference numeral 120 denotes a case detachably attached to one side of the shoulder strap 103, and is a storage space for frequently used items such as a mobile phone, an MP3, and the like, without opening or closing the backpack 100.

However, the conventional backpack 100 configured as described above is configured such that the storage member 106 with a frame may be detached from the backpack so that when the storage member 106 is not used, it needs to be separated and stored in a separate place, and in some cases, it may be easily lost.

In addition, if a large item needs to be stored in the backpack when the storage member is in use, the storage member needs to be separated from the backpack, and therefore, it is inconvenient to process the separated storage member.

DISCLOSURE
Technical Problem

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a backpack structure in which when a large-sized item, which may not be put into a storage space portion of a backpack, is carried or an injured person is transported, it is possible to transport the item or the injured person by simply fixing the same to the backpack, and the storage space portion is divided into a plurality of partitions by easily unfolding a partition member in the storage space portion as needed, thereby conveniently carrying a relatively small-sized item into or out of each storage space portion.

Another object of the present invention is to provide a backpack structure in which even when facing surfaces of the first backpack member and the second backpack member, which face each other with an auxiliary loading portion interposed therebetween, are made of lightweight fabrics or leather-sheet materials, thereby maintaining shapes of the facing surfaces of the first backpack member and the second backpack member to be uniform and flat.

Still another object of the present invention is to provide a backpack structure capable of maintaining a sense of wearing and balance even when a large-sized item is loaded on a backpack, thereby stably wearing the backpack on shoulders, and preventing the large-sized loaded item from affecting opening/closing of a storage space portion of the backpack.

Still another object of the present invention is to provide a backpack structure including a lashing protrusion frame on a back plate of a backpack, which may fix the backpack such that the backpack does not sag when a large-sized item or a heavyweight item is loaded on the backpack.

Still another object of the present invention is to provide a backpack structure that is convenience of use and and has various functions while reducing the weight of a backpack.

Technical Solution

A backpack includes a first backpack member which has shoulder straps provided on both sides of a back plate of the backpack, a second backpack member which is provided on a rear surface of the first backpack member, and an auxiliary loading portion which is configured to fix bottom surfaces of the first backpack member and the second backpack member to each other to enable the first backpack member and the second backpack member to be unfolded in opposite directions, and which has a predetermined width between the first backpack member and the second backpack member.

In particular, the backpack includes: U-shaped elastic rods which are respectively fixed to an edge of a rear surface of the first backpack member and an edge of a front surface of the second backpack member with the auxiliary loading portion interposed therebetween, so as to maintain shapes of the rear surface of the first backpack member and the front surface of the second backpack member;

- a lashing protrusion frame the first backpack member and the second backpack member, which is fixed to the back plate of the backpack to extend upward of the backpack by a predetermined length; and
- a storage space portion formed in any one selected from the first backpack member, the auxiliary loading portion, and the second backpack member.

In addition, the U-shaped elastic rod may be made of steel having a diameter of 3 to 10 mm.

In addition, the lashing protrusion frame may be detachably attached from the back plate of the backpack.

In addition, the lashing protrusion frame may include a plurality of poles, in which an uppermost pole constituting the lashing protrusion frame includes a belt supporter for supporting a belt selected from a main belt for auxiliary loading and an auxiliary fixing belt, which fix the first backpack member and the second backpack member.

In addition, the lashing protrusion frame may be configured such that flexible members are inserted into the plurality of poles so as to integrally and elastically support each of the poles.

In addition, the storage space portion may include at least one main partition pad which has one end that is fixed to a base member of the space storage portion so as to be unfoldable, and at least one auxiliary partition pad which is fixed to upper and lower surfaces of the main partition pad, in which the main partition pad and the auxiliary partition pad are unfolded so that an end portion of the auxiliary partition pad and an abutment portion making contact with the base member of the storage space portion are detachably fixed to each other, thereby dividing the storage space portion into a plurality of space portions.

In addition, the backpack may further include upper and lower members and left and right members, lower edges of which are fixedly and uprightly installed along upper and lower edges and left and right edges of the base member, and a cover member fixed to upper edges of the upper and lower members and the left and right members so as to face the base member.

In addition, the main partition pad may be configured such that an abutment portion making contact with the upper and lower members and the left and right members and the main partition pad are detachably fixed to each other in a state where the main partition pad is unfolded.

In addition, the upper and lower members and the left and right members may be formed of a pair of upper and lower support pads disposed up and down, respectively, and are foldable about an abutment portion of each of the pair of upper and lower support pads.

In addition, a waist support and a back support may be detachably attached from a lower end of the first backpack member.

Advantageous Effects

The backpack of the present invention includes a first backpack member which has shoulder straps provided on both sides of a back plate of the backpack, a second backpack member which is provided on a rear surface of the first backpack member, and an auxiliary loading portion which is configured to fix bottom surfaces of the first backpack member and the second backpack member to each other to enable the first backpack member and the second backpack member to be unfolded in opposite directions, and which has a predetermined width between the first backpack member and the second backpack member, and in particular, the backpack includes U-shaped elastic rods which are respectively fixed to an edge of a front surface of the second backpack member so as to maintain shapes of a rear surface of the first backpack member and the front surface of the second backpack member, a lashing protrusion frame the first backpack member and the second backpack member, which is fixed to the back plate of the backpack to extend upward of the backpack by a predetermined length, and

- a storage space portion provided in the second backpack member, and therefore, when a large-sized item, which may not be put into the storage space portion of the backpack, is carried or an injured person is transported, it is possible to transport the item or the injured person by simply fixing the same to the backpack such that the backpack does not sag, and the storage space portion is divided into a plurality of partitions by easily unfolding a partition member without loss in the storage space portion as needed, thereby conveniently carrying a relatively small-sized item into or out of each storage space portion.

In addition, even when facing surfaces of the first backpack member and the second backpack member, which face each other with the auxiliary loading portion interposed therebetween, are formed of lightweight materials such as lightweight fabrics or leather sheets, thereby maintaining shapes of the facing surfaces of the first backpack member and the second backpack member to be uniform and flat.

In addition, even when the large-sized item is loaded on the auxiliary loading portion of the backpack, it is possible to maintain a sense of wearing and balance of the center of gravity, thereby stably wearing the backpack on shoulders, and it is possible to prevent the large-sized loaded item from affecting opening/closing of the storage space portion of the backpack.

DESCRIPTION OF DRAWINGS

FIG. 1 is a three-dimensional view showing an example of a conventional backpack.

FIG. 2 is a three-dimensional view showing another example of the conventional backpack.

FIG. 3 is a three-dimensional view of the backpack of the present invention, when viewed from a rear right side.

FIG. 4 is a three-dimensional view of the backpack of the present invention, when viewed from a rear left side.

FIG. 5 is a three-dimensional view of the backpack of the present invention, when viewed from a front right side.

FIG. 6 is a three-dimensional view showing a state in which an auxiliary loading portion of the present invention is exposed.

FIG. 7 is a three-dimensional view of a lashing protrusion frame provided in the backpack of the present invention.

FIG. 8 is a three-dimensional view showing a separation state of the lashing protrusion frame provided in the backpack of the present invention.

FIG. 9 is a sectional view showing the lashing protrusion frame provided in the backpack of the present invention.

FIG. 10 is a view showing an arrangement state of a main belt for an auxiliary loading portion, which fixes an item loaded on the auxiliary loading portion of the present invention.

FIG. 11 is a view showing a state in which a waist support and a back support of the present invention are separated from each other.

FIGS. 12 and 13 are views for explaining a process of dividing a storage space portion provided in a second backpack member of the present invention into a plurality of storage spaces.

FIG. 14 is a three-dimensional view showing a state in which the storage space portion provided in the second backpack member of the present invention is unfolded.

FIG. 15 is a three-dimensional view showing a state in which a cover member of the storage space portion provided in the second backpack member of the present invention is opened.

FIG. 16 is a view showing a form in which a user wears the backpack on his/her shoulder while using the storage space portion provided in the second backpack member of the present invention.

FIG. 17 is a view showing a form in which the user wears the backpack on his/her shoulder while loading the item on the auxiliary loading portion and the storage space portion provided in the second backpack member of the present invention.

FIG. 18 is a view showing a form in which the user wears the backpack on his/her shoulder while loading the item on the auxiliary loading portion and the storage space portion provided in the second backpack member of the present invention.

FIG. 19 is a view showing a form in which the user wears the backpack on the his/her shoulder with a person seated on the auxiliary loading portion.

FIG. 20 is a three-dimensional view showing a form in which a headrest is provided on the lashing protrusion frame of the present invention.

FIGS. 21 and 22 are three-dimensional views showing a form in which another example of the headrest is provided on the lashing protrusion frame of the present invention.

FIG. 23 is a three-dimensional view showing an example in which a cushion member is provided on an upper side of a shoulder strap of the backpack of the present invention.

FIG. 24 is a three-dimensional view of a main part showing a state in which a pocket of the cushion member provided on an upper side of the shoulder strap of the present invention is opened.

FIG. 25 is a three-dimensional view of a main part showing a state in which the pocket of the cushion member provided on the upper side of the shoulder strap of the present invention is closed.

FIG. 26 is a three-dimensional view showing a state in which another example of the lashing protrusion frame of the present invention is coupled.

FIG. 27 is an exploded view showing a pole diffraction unit provided on the lashing protrusion frame of FIG. 26, and an end of the pole linked to the pole diffraction unit.

FIG. 28 is a three-dimensional view showing a separation state of the lashing protrusion frame of FIG. 26.

FIG. 29 is a three-dimensional view showing a coupling state of still another example of the lashing protrusion frame of the present invention.

FIG. 30 is an exploded view showing a pole coupling portion and the pole diffraction unit provided between a pair of vertical poles constituting left and right poles of FIG. 29.

FIG. 31 is a three-dimensional view showing a state in which the lashing protrusion frame of FIG. 29 is folded while being separated.

FIG. 32 is a three-dimensional view showing a coupling state of still another example of the lashing protrusion frame of the present invention.

FIG. 33 is a sectional view showing a state in which the pole coupling portion of the lashing protrusion frame of FIG. 32 is tightened.

FIG. 34 is a sectional view showing a state in which the pole coupling portion of the lashing protrusion frame of FIG. 32 is loosened.

BEST MODE
Mode for Invention

A backpack 600 of the present invention includes a first backpack member 610 which has shoulder straps 630 and 630 provided on both sides of a back plate 615 of the backpack, a second backpack member 620 which is provided on a rear surface of the first backpack member, an auxiliary loading portion 640 which is configured to fix bottom surfaces of the first backpack member and the second backpack member to each other to enable the first backpack member and the second backpack member to be unfolded in opposite directions, so as to have a predetermined width between the first backpack member and the second backpack member, and a lashing protrusion frame 700 the first backpack member and the second backpack member, which is fixed to the back plate 615 of the backpack to extend upward of the backpack by a predetermined length, wherein the lashing protrusion frame has flexible members inserted into a plurality of poles to integrally and elastically support each of the poles.

Mode for Invention

Hereinafter, the technical configuration and operation of a backpack of the present invention will be described in detail with reference to FIGS. 3 to 34.

A backpack 600 of the present invention includes a first backpack member 610, a second backpack member 620, a pair of shoulder straps 630 provided on a back plate 615 of the first backpack member, and an auxiliary loading portion 640 fixed by connecting bottom surfaces of the first backpack member and the second backpack member to each other.

The first backpack member 610 includes a storage space portion 612 which may be opened by a fastener 611 or the like. The fastener 611 provided in the storage space portion 612 of the first backpack member may be formed along the center of an outer surface of the storage space portion, to easily carry an item into or out of the storage space portion 612 of the first backpack member without use of the auxiliary loading portion. Auxiliary pockets 619 are provided on both side surfaces of the first backpack member 610 so as to fix the item while being inserted from the outside.

Further, shoulder supports 641 and 642 are fixed to both sides from an upper side toward a center portion of the back plate 615 including the shoulder straps 630 and 630 of the first backpack 610. A waist support 650 is provided on a lower side of the back plate including the shoulder straps 630 and 630 of the first backpack 610 so as to be detachable from the back plate 615 as shown in FIG. 10.

To detachably fix the waist support 650, Velcros 650a and 650b are provided on the center of the back plate 615 of the first backpack 610 and a rear surface of the waist support 650, respectively.

Waist support belt fixtures 657 are provided at the center of the waist support 650 at predetermined intervals such that a waist support belt 656 fixed to the back plate 615 of the first backpack 610 may be fastened while being inserted thereinto. A back support 655 is provided at the center of the waist support 650.

In addition, the auxiliary loading portion 640 is provided between the first backpack member 610 and the second backpack member 620. The auxiliary loading portion 640 is fixed while being coupled to both lower end portions of the first backpack member 610 and the second backpack member 620 through sewing or a separate hinge (not shown). The auxiliary loading portion 640 is configured to enable the first backpack member 610 and the second backpack member 620 to be unfolded in opposite directions in a state where surfaces thereof may be exposed.

The auxiliary loading portion 640 may be configured by using a structure described in Korean Patent Registration No. 10-2162883, which is previously registered by the present inventor such that the interval may be adjusted within a predetermined width range.

In addition to the structure described in Korean Patent Registration No. 10-2162883, the auxiliary loading portion 640 of the present invention may be configured by using a pair of thin panels 640a and 640b so as to be folded in half based on a center portion (dotted line) as shown in FIG. 6.

The thin panels 640a and 640b constituting the auxiliary loading portion have to be configured such that when being folded, the folded position does not protrude outward of the first backpack member 610 and the second backpack member 620, and the thin panels overlap each other while being folded inward.

Referring to the structure of FIG. 6, the auxiliary loading portion 640 is fixed to lower ends of the first backpack member 610 and the second backpack member 620.

A fixing position of the auxiliary loading portion 640 is not limited to the structure of FIG. 6, but may have a structure in which when an item is loaded on the auxiliary loading portion 640, the auxiliary loading portion is fixed to an upper side that is spaced apart from the lower end portions of the first backpack member 610 and the second backpack member 620 at a predetermined interval in consideration of that the auxiliary loading portion sags downward due to the weight of the item so as to be exposed to the outside of the lower ends of the first backpack member 610 and the second backpack member 620.

When the auxiliary loading portion 640 is not used, the first backpack member 610 and the second backpack member 620 are fixed to each other while making close contact with each other. As shown in FIG. 6, the first backpack member 610 and the second backpack member 620 are fixed to each other by fastening a plurality of auxiliary fixing belts 658 provided in the first backpack 610 and a plurality of buckles 659 provided in the second backpack 610 corresponding to the auxiliary fixing belt 658. The auxiliary fixing belt 658 is configured to adjust a length thereof.

When the auxiliary loading portion 640 is not used, another method for fixing the first backpack member 610 and the second backpack member 620 to each other may include fixing the first backpack member 610 and the second backpack member 620 by installing fasteners 631 on parts of an edge 610b of the rear surface of the first backpack member 610 and an edge 620b of the front surface of the second backpack member 620.

Main fixing belts 671 and 672 for an auxiliary loading portion, which are not described, may be mainly used when the item is loaded on the auxiliary loading portion.

As shown in FIGS. 10 and 11, the main fixing belts 671 and 672 for an auxiliary loading portion are disposed to pass through the back plate 615 of the first backpack member 610, a lower side of the auxiliary loading portion 640, and an inner side of the front surface 620a of the second backpack member 620. That is, the main fixing belts 671 and 672 have a structure in which the item loaded on the auxiliary loading portion 640 may be lashed to the first backpack member 610 while completely surrounding the item between the rear surface 610a of the first backpack member and the front surface 620a of the second backpack member.

In particular, as shown in FIG. 6, the backpack 600 of the present invention has U-shaped elastic rods 680 and 690 fixedly inserted into the edge 610b of the rear surfacer 610a of the first backpack member 610 and the edge 620b of the front surface 620a of the second backpack member 620, respectively, with the auxiliary loading portion 640 interposed therebetween. When the U-shaped elastic rod is formed of steel coated with an insulating material, a diameter of about 3 mm is sufficient, but steel having a diameter within a range of 3 to 10 mm may be used according to the size or strength of the backpack.

The rear surface 610a of the first backpack member 610 and the front surface 620a of the second backpack member 620 are formed of a thin and lightweight material such as fabric, nonwoven fabric, and leather.

Even if the material forming the rear surface 610a of the first backpack member 610 and the front surface 620a of the second backpack member 620 is thin and lightweight, the U-shaped elastic rods 680 and 690 are smoothly pulled by an elastic force that allows the rear surface 610a of the first backpack member and the front surface 620a of the second backpack member to act outward, so that the rear surface 610a of the first backpack member 610 and the front surface 620a of the second backpack member 620 may always maintain a flat shape. Even if the shapes of the rear surface 610a of the first backpack member 610 and the front surface 620a of the second backpack member 620 are temporarily deformed due to the loading of the item, it is advantageous that the item is immediately returned to its original position after being removed, thereby maintaining the original shape of the backpack. In addition, since the rear surface 610a of the first backpack member 610 and the front surface 620a of the second backpack member 620 do not have to be formed of a material such as a thick panel, the weight of the backpack may be reduced.

Further, as shown in FIGS. 6 and 11, a lashing protrusion frame 700, which is fixed to the back plate 615 of the backpack to extend upward of the backpack by a predetermined length, is provided.

The lashing protrusion frame 700 includes pocket-shaped grooves (not shown) which are provided on both sides of the back plate 615 of the backpack to fixedly insert the lashing protrusion frame 700 thereinto by lengthily connecting frames 710, 720, 730, and 740 to each other. The lashing protrusion frame 700 is tightly and detachably inserted into the pocket-shaped grooves, and is selectively used only when the backpack sags because the item loaded on the first backpack member and the second backpack member is heavy or bulky.

As shown in FIGS. 6, 7, and 9, the lashing protrusion frame 700 is formed by coupling left and right poles 710, 720, 730, and 740 aligned on both sides thereof and a horizontal pole 770 coupled across the uppermost end thereof, in which the uppermost horizontal pole has belt supporters 751 and 761 for supporting a belt selected from the main belt 671 for auxiliary loading and the auxiliary fixing belt 658, which fix the first backpack member and the second backpack member.

The belt supporters 751 and 761 may be provided on pole coupling assemblies 750 and 760 for fixing the horizontal pole 770 and the left and right poles 710 and 730.

The installation positions of the belt supports 751 and 761 are not limited to the pole coupling assemblies 750 and 760, and may be a middle portion of the horizontal pole 770.

The right poles 710 and 720 are coupled to each other by inserting a pole joint 705 into opposing ends thereof, and the left poles 730 and 740 are coupled to each other by inserting a pole joint 706 into opposing ends thereof.

The right pole coupling assembly 750 and the right pole 710 are fixed to each other by screw-coupling both end portions thereof, and the left pole coupling assembly 760 and the left pole 730 are fixed to each other by screw-coupling both end portions thereof.

The horizontal pole 770 has screw threads formed on both sides thereof in opposite directions so as to be coupled to screw grooves of the pole coupling assembly 750.

The lashing protrusion frame is configured such that a flexible member such as a rubber band 790 or the like is inserted into each pole to integrally and elastically support each pole, in which both ends of the rubber band 790 are fixed to rings 725a and 745a provided on a rubber band supporters 725 and 745.

The rubber band supporters 725 and 745 are fixedly inserted into end portions of the poles 720 and 740, respectively. The reason why the flexible member such as the rubber band 790 or the like is inserted into the pole to integrally and elastically support each pole is to reduce the volume to the extent that the lashing protrusion frame 700 may be stored in the backpack when the lashing protrusion frame 700 is disassembled while being separated from the backpack, and to prevent parts to be lost.

Meanwhile, the second backpack member 620 includes a storage space portion 622 with a cover member 625 that is openable by a fastener 621 or the like. The fastener 621 provided in the storage space portion 622 of the second backpack member is provided along a front edge of the storage space portion. That is, when the cover member 625 is fully opened while moving the fastener 621, the entire front surface of the storage space portion 622 of the second backpack member 620 is exposed.

The technical configuration and operation of the storage space portion 622 provided in the second backpack member 620 will be described in detail with reference to FIGS. 12 and 15.

The storage space portion 622 includes a main partition pad 320 having one end that is at least fixed to a rear surface (base member) integrally formed with the front surface 620a of the second backpack member 620 so as to be unfolded, and a plurality of auxiliary partition pads 331 and 332 that are fixed to upper and lower surfaces of the main partition pad 320 so as to be unfolded. The main partition pad 320 may be configured to rotate upward and downward by fixing one end surface thereof to a center portion of the base member of the rear surface, which is integrally formed with the front surface of the second backpack member 620, through sewing or the like, so as to be unfoldable.

The auxiliary partition pad 331 is configured to rotate left and right by fixing one side surface thereof to an upper center portion of the main partition pad 320 through sewing or the like, so as to be unfoldable.

The auxiliary partition pad 332 is configured to rotate to left and right by fixing one side surface thereof to a lower center portion of the main partition pad 320 through sewing or the like, so as to be unfoldable.

That is, after rotating and folding the auxiliary partition pads 331 and 332 provided on the upper and lower sides of the main partition pad 320, the main partition pad 320 is folded toward the base member of the rear surface, which is integrally formed with the front surface 620a of the second backpack member 620, thereby obtaining a structure as shown in FIG. 12.

In a state of FIG. 12, after unfolding the main partition pad 320 while being rotated 90°, the auxiliary partition pads 331 and 332 provided on the upper and lower sides are unfolded while being rotated 90° to left and right, and the storage space portion 622 is thus divided into a plurality of small storage space portions 622a, 622b, 622c, and 622d as a structure shown in FIG. 13.

After the main partition pad 320 and the auxiliary partition pads 331 and 332 are unfolded in order to divide the storage space portion into the small storage space portions 622a, 622b, 622c, and 622d, one end portions of the auxiliary partition pads 331 and 332 and an abutment portion making contact with the base member of the storage space portion (a rear surface portion integrally formed with the front surface 620a of the second backpack member) may be detachably coupled to each other by using a Velcro or a ring (not shown).

In addition, in a state where the main partition pad 320 and the auxiliary partition pads 331 and 332 are unfolded, the upper and lower members 351 and 352 of the storage space portion 622, which surround the base member of the storage space portion, and an abutment portion making contact with the left and right members 361 and 362 may be detachably fixed to each other by using a Velcro or a ring (not shown).

In a state where the storage space portion 622 is folded, the upper and lower members 351 and 352 and the left and right members 361 and 362 are folded in half such that the first backpack member 620 has a compact structure. The upper and lower members 351 and 352 and the left and right members 361 and 362 folded in half may be fixed so as to maintain the folded state by using a Velcro 335 provided on the upper and lower members 351 and 352 and the left and right members 361 and 362 as shown in FIGS. 14 and 15.

Since the main partition pad 320 is fixed to the base member of the storage space portion to be unfolded through sewing or the like, there is an advantage that the main partition pad 320 and the auxiliary partition pads 331 and 332 are not lost. Further, the main partition pad 320 and the auxiliary partition pads 331 and 332 are very easily folded and unfolded.

When the storage space portion 622 of the backpack is used, fixing of the Velcro 335 is released, and the upper and lower members 351 and 352 and the left and right members 361 and 362 are unfolded.

The upper and lower members 351 and 352 and the left and right members 361 and 362 have a pair of support pads disposed up and down, respectively, so that the upper and lower side members 351 and 352 and the left and right side members 361 and 362 may be folded in half.

As an example, the upper member 351 formed of fabric may be provided therein with a pair of support pads 351a and 351b that are disposed up and down, the lower member 352 is provided therein with a pair of support pads 352a and 352b that are disposed up and down, the left member 361 is provided therein with a pair of support pads 361a and 362b that are disposed up and down, and the right member 362 is provided therein with a pair of support pads 362a and 362b that are disposed up and down.

As described above, by disposing the pair of support pads up and down in the upper and lower members 351 and 352 and the left and right members 361 and 362, which are formed of fabric or the like, the upper and lower members 351 and 352 and the left and right members 361 and 362 serve to maintain frames thereof such that a boundary portion where the support pads face each other may be easily folded in half.

Since the upper and lower members 351 and 352 and the left and right members 361 and 362 are folded or unfolded in half as described above, when the storage space portion 622 of the second backpack member 620 is not used, the second backpack member 620 may compactly make close contact with the base member of the storage space portion (the rear surface portion of 620a), and when the storage space portion 622 is used, the storage space portion 622 may be easily unfolded.

After the upper and lower members 351 and 352 and the left and right members 361 and 362 are folded and make close contact with the base member of the storage space portion, the upper and lower members 351 and 352 and the left and right members 361 and 362 are fixed by using a plurality of Velcro 335 formed on surfaces thereof so as not to be opened.

Both end portions of each of the support pads 351a, 351b, 352a, and 352b, of the upper and lower members 351 and 352 are removed while being diagonally cut such that the support pads prevent the upper and lower members 351 and 352 and the left and right members 361 and 362 from making contact with each other or interfering with each other when being folded in half.

Although FIGS. 12 to 15 illustrate a structure in which only one main partition pad 320 provided in the storage space portion 622 is formed at the center of the base member, a plurality of main partition pads 320 may be formed up and down according to the size of the backpack to expand the number of small storage spaces.

The backpack 600 of the present invention configured as described above is packed up and worn on the shoulders in a state where the item is put into the storage space portion 622 of the second backpack member 620, thereby obtaining a structure as shown in FIG. 16. In FIG. 16, since only the storage space portion 622 of the second backpack member 620 is used, the lashing protrusion frame 700 may be separated from the backpack when there is no concern that the backpack sags due to the small loading weight of the backpack.

Further, an item 645 such as a blanket is loaded on the second backpack member 620 and the auxiliary loading portion 640, and then the backpack is packed up and worn on the shoulders, thereby obtaining a structure of FIG. 17.

In addition, the backpack 600 of the present invention may be configured such that a partition-type storage member 635, which is the same as or similar to the shape of the storage space portion 622 of the present invention, is detachably fixed to the auxiliary loading portion 640 as shown in FIG. 18, or may transport an injured person or a child after the injured person or the child is seated on and fixed to the auxiliary loading portion 640 as shown in FIG. 19.

The lashing protrusion frame 700 configured as described above is not limited to the structures of FIGS. 7 and 9, and may be configured to support the head or neck of a backpack user by installing a headrest 800 having various structures on the horizontal pole 770 protruding upward of the backpack as shown in FIGS. 20 and 21.

Further, when the headrest 800 is installed, the horizontal pole 770 may be excluded from a lashing unit of the present invention as shown in FIG. 22, and the headrest 800 is fixedly inserted into the upper right pole 710 and the upper left pole 730. The headrest 800 having various structures configured as described above may be configured as an air injection type tube in consideration of volume, weight, and the like.

Further, as shown in FIGS. 23 to 25, the shoulder straps 630 of the backpack according to the present invention may have cushion members provided at upper portions of both shoulder straps 630 and 630 making contact with the shoulders of a backpack wearer. The cushion members serve to prevent transmission of pain to the shoulders due to a load applied to the shoulders of the wearer when the wearer wears the heavy backpack.

The cushion member includes a slit-shaped pocket 634 which may be opened and closed by the fastener 635 at an upper side portion of the shoulder strap 630 of the backpack, and a cushion pad 636 may be embedded in the pocket 634. The cushion pad 636 may be used only when the weight of the backpack is heavy due to the item loaded on the backpack. The cushion pad 636 may be formed of an elastic tube formed of a rubber or silicone material, and may have an air injection port 637 at at least one spot to expand to a predetermined thickness. In addition, the cushion pad 636 may have a plurality of partitions (not shown) formed therein so that air does not easily escape even if a part of the cushion pad is damaged.

Meanwhile, still another example of the lashing protrusion frame 700 provided in the backpack according to the present invention will be described in more detail with reference to FIGS. 26, 28, 29, 31, 32, and 34.

First, a structure of another example of the lashing protrusion frame 700 will be described with reference to FIGS. 26 and 28. The lashing protrusion frame 700 includes the left and right poles 710, 720, 730, and 740 aligned on both sides thereof, the horizontal pole 770 coupled across the uppermost end thereof, and belt supporters 751 and 761 provided at at least one spot on the upper ends of the left and right poles 710 and 730 protruding upward of the backpack by a predetermined length or the horizontal poles 770.

The belt supporters 751 and 761 may be provided on coupling assemblies 750 and 760 for fixing the horizontal pole 770 and the left and right poles 710 and 730.

The horizontal pole 770 has screw threads formed on both sides thereof in opposite directions so as to be coupled to screw grooves of the pole coupling assembly 750.

A wire 790 is inserted into the horizontal pole 770 so that even when the horizontal pole 770 is disassembled from the right pole coupling assembly 750 and the left pole coupling assembly 760, the wire 790 may be held without being separated from the right pole coupling assembly 750 and the left pole coupling assembly 760. The wire 790 may be used as a string, a rubber band, a tensile spring, and the like, and both ends of the wire may be fixed to the right pole coupling assembly 750 and the left pole coupling assembly 760, respectively, and a length of the wire have to be sufficiently longer than a length of the horizontal pole 770.

The reason for forming the pole coupling portion as described above is to reduce the volume to the extent that the lashing protrusion frame 700 may be stored in the backpack when the lashing protrusion frame 700 is disassembled while being separated from the backpack, and to prevent parts to be lost.

In particular, the lashing protrusion frame 700 shown in FIGS. 26 and 28 includes a plurality of pole coupling portions formed of metal or base metal, in which at least one of the pole coupling portions includes a pole diffraction unit 900. The pole diffraction unit 900 may be linked to both end portions of adjacent poles 710, 720, 730, and 740 so that the adjacent poles 710, 720, 730, and 740 may be diffracted based on both end portions of the adjacent poles. The pole diffraction unit 900 includes support plates 901, 902, 903, and 904 provided at both end portions thereof, and screw passing holes 901a, 902a, 903a, and 904a formed in the respective support plates. A body of the pole diffraction unit 900 has holders 910 and 920 in which the end portions of the adjacent poles 710, 720, 730, and 740 formed at positions facing each other are stored. Long holes 710a, 720a, 730a, and 740a are formed in the end portions of poles 710, 720, 730, and 740 stored in the holders 910 and 920. The end portions of the adjacent poles 710, 720, 730, and 740 in which the long holes 710a, 720a, 730a, and 740a are formed are inserted between the support plates 901, 902, 903, and 904, respectively, and then are fixedly linked to the support plates 901, 902, and 903, and 904 by using screws 908 and 909 passing through the screw passing holes 901a, 902a, 903a, and 904a and the long holes 710a, 720a, 730a, and 740a. The adjacent end portions of the poles 710, 720, 730, and 740 are fixed to the support plates 901, 902, 903, and 904 in a movable state by the long holes.

The pole diffraction unit 900 configured as described above may support the adjacent poles 710, 720, 730, and 740 such that the end portions 710a, 730a, 720a, and 740a of the poles are inserted into the holders 910 and 920 so that the adjacent poles 710, 720, 730, and 740 are configured to be perpendicular to each other as shown in FIG. 26, or may diffract and fold the poles 710, 720, 730, and 740 as shown in FIG. 28.

Next, still another example of the lashing protrusion frame 700 according to the present invention will be described with reference to FIGS. 29 and 31.

As shown in FIGS. 29 and 30, the lashing protrusion frame 700 includes the left and right poles 710, 720, 730, and 740 each constituting a pair of vertical poles aligned on both sides thereof, the horizontal pole 770 coupled across the uppermost end thereof, and belt supporters 751 and 761 which is provided at at least one spot for supporting a belt selected from the main fixing belt 671 for auxiliary loading and the auxiliary fixing belt 658, which fix the first backpack member and the second backpack member to the upper ends of the left and right poles 710 and 730 protruding upward of the backpack by a predetermined length or the horizontal poles 770.

The belt supporters 751 and 761 may be provided on coupling assemblies 750 and 760 for fixing the horizontal pole 770 and the left and right poles 710 and 730.

The pole coupling assemblies 750 and 760 serve as pole coupling portions, and the right pole coupling assembly 750 and the right pole 710 are coupled to each other by interposing a rotation shaft 755 between both end portions thereof, and the left pole coupling assembly 760 and the left pole 730 are coupled to each other by interposing a rotation shaft 765 between both end portions thereof. The rotation shafts 755 and 765 may have widths larger than diameters of the left and right poles 710 and 730 such that the left and right poles 710 and 730 may cross each other while being offset when the left and right poles 710 and 730 are folded while being rotated, so that the fixed end portions of the poles 710 and 730 may slightly move in a longitudinal direction of the rotation shafts 755 and 765.

The horizontal pole 770 has screw threads formed on both sides thereof in opposite directions so as to be coupled to or integrally formed with screw grooves of the pole coupling assemblies 750 and 760.

The lashing protrusion frame 700 shown in FIGS. 29 and 31 includes a plurality of pole coupling portions formed of metal or base metal, in which each pole coupling portion includes a pole diffraction unit that allows the adjacent poles to be folded.

The rotation shafts 755 and 765 serve as coupling portions and diffraction units of the left and right vertical poles 710 and 730 adjacent to the horizontal pole, and another type of a pole diffraction unit 1900 is provided between a pair of left and right vertical poles.

As an example, as shown in FIG. 30, the pole diffraction unit 1900 may be linked to both end portions of a pair of vertical poles 710, 720, 730, and 740 adjacent to each other so that the adjacent vertical poles 710 and 720 and the adjacent vertical poles 730 and 740 may be diffracted based on both end portions of the adjacent poles. The pole diffraction unit 1900 includes a grid-shaped plate 1901 which has a width the same as the diameter of the pole in which one edge of both end portions thereof has an arc shape in the same direction, cutting grooves 1902 and 1903 provided in the vertical poles 710, 720, 730, and 740, respectively such that both end portions of the grid-shaped plate 1901 are inserted thereinto, and fixing pins 1904 and 1905 for coupling the grid-shaped plate 1901 such that the grid-shaped plate 1901 inserted into the cutting grooves 1902 and 1902 is rotatable and bendable in the cutting grooves. The overlapping portions in which the poles 710, 720, 730, and 740 and the grid-shaped plate 901 are coupled to each other by the fixing pins 1904 and 1905 form a square based on coupling holes 1906 and 1907 of the fixing pins.

As described above, since the pole diffraction unit 1900 is formed between the vertical poles, when the pair of vertical poles constituting the left and right poles form a straight line based on the grid-shaped plate 1901, the end portions of the cutting grooves and the end portions of the grid-shaped plate may make contact with each other to serve as a stopper in order to prevent diffraction to at least one side.

The pole diffraction unit 1900 may support the vertical poles 710, 720, 730, and 740 so that the vertical poles are configured to be perpendicular to each other while being aligned as shown in FIG. 29, or may diffract and fold the poles 710, 720, 730, and 740 as shown in FIG. 31.

Next, still another example of the lashing protrusion frame 700 according to the present invention will be described with reference to FIGS. 32 and 34.

As shown in FIGS. 32 and 34, the lashing protrusion frame 700 includes the left and right poles 710, 720, 730, and 740 each constituting a pair of vertical poles aligned on both sides thereof, a horizontal pole 770 coupled across the uppermost end thereof, and belt supporters 751 and 761 which are provided on at least one spot for supporting a belt selected from the main fixing belt 671 for auxiliary loading and the auxiliary fixing belt 658, which fix the first backpack member and the second backpack member to the upper ends of the left and right poles 710 and 730 protruding upward of the backpack by a predetermined length or the horizontal poles 770.

The belt supporters 751 and 761 may be provided on coupling assemblies 750 and 760 for fixing the horizontal pole 770 and the left and right poles 710 and 730.

The rotation shafts 755 and 765 formed in the pole coupling portion serve as diffraction units of the left and right vertical poles 710 and 730 adjacent to the horizontal pole.

In addition, a pole coupling portion 2900 is formed between the pair of left and right poles (poles 710, 720, 730, and 740) to allow any one side of the pole to be led-in or led-out in the longitudinal direction of the pole.

As an example, as shown in FIGS. 33 and 34, the pole coupling portion 2900 may be linked to both end portions of adjacent pair of vertical poles 710, 720, 730, and 740 so that the adjacent vertical poles 710 and 720 and the adjacent vertical poles 730 and 740 may be led-in or led-out along the longitudinal direction of the pole.

For example, the pole coupling portion 2900 may be configured such that the lower vertical poles 720 and 740 may be led-in or led-out of inner sides of the upper vertical poles 710 and 730.

The pole coupling portion 2900 includes a convex base body 850 and a rod body 852 that are forcibly and fixedly fitted into the upper ends of the lower vertical pole 720 and 740. The rod body 852 is roughly divided into two parts of a region in which a screw thread 851 is formed at an upper side thereof and a region in which a screw thread is not formed at a lower side thereof.

A pressing member 840 is fastened to the rod body of the region in which the screw thread 851 is formed, and a pressing stopper 860 is formed between the base body 850 and the region in which the screw thread is not formed.

A fixing member 853 is coupled to an upper end of the rod body 852 such that the pressing member 840 is not separated. Surfaces 840a and 860a, on which the pressing member 840 and the pressing stopper 860 make contact with each other, form an inclined surface to make surface contact with each other.

For example, in the pole coupling portion 2900 configured as described above, when the lower vertical poles 720 and 740 are rotated such that an outer surface of the pressing stopper may press inner surfaces of the upper vertical poles 710 and 730 as the pressing member 840 presses the pressing stopper 860 as shown in FIG. 33, the lower vertical poles 720 and 740 are stopped while being fixed to the upper vertical poles 710 and 730.

On the other hand, when the lower vertical poles 720 and 740 are reversely rotated as shown in FIG. 34, the internal pressure of the vertical poles 710 and 730 by the pressing stopper 860 is released, so that the lower vertical poles 720 and 740 may be freely led-in or led-out of the insides of the upper vertical poles 710 and 730. That is, the lengths of the left and right poles may be freely adjusted by using the pole coupling portion 2900 as needed.

As described above, the pole coupling portion 2900 is formed between the vertical poles, so that the lashing protrusion frame 700 is separated from the backpack, the left and right lower poles 730 and 740 are inserted into the left and right upper poles 710 and 720 as shown in FIG. 32, and then the left and right poles are diffracted toward the horizontal pole 770, thereby simply folding the poles.

The backpack 600 of the present invention described above is not limited to the above drawing structures and descriptions, but may be variously modified and implemented within the scope and purpose of the present invention.

INDUSTRIAL APPLICABILITY

The present invention is used in a backpack capable of easily loading or taking out a large-sized item or small-sized items.

Number	Date	Country	Kind
10-2021-0086250	Jul 2021	KR	national
10-2021-0095740	Jul 2021	KR	national
10-2021-0141021	Oct 2021	KR	national

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Abstract

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