Backpack

Abstract

The present invention provides a backpack structure capable of easily loading or taking out large-sized items or small-sized items. A backpack ( 600 ) of the present invention includes a first backpack member ( 610 ) which has shoulder straps ( 630, 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, and 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, 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 ( 680, 690 ) which are respectively fixed to an edge ( 620 b ) of a front surface of the second backpack member so as to maintain shapes of a rear surface ( 610 a ) of the first backpack member and the front surface ( 620 a ) of the second backpack member, a lashing protrusion frame ( 700 ) for 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, and a storage space portion ( 622 ) provided in the second backpack member ( 620 ).

1 . A backpack including 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, wherein the backpack comprises;
 a storage space portion formed in any one selected from the first backpack member, the auxiliary loading portion, and the second backpack member; and   a lashing protrusion frame for 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,   wherein the lashing protrusion frame is configured such that flexible members are inserted into a plurality of poles so as to integrally and elastically support each of the poles.   
     
     
         2 . The backpack of  claim 1 , further comprising 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,
 wherein the U-shaped elastic rod is formed of steel having a diameter of 3 to 10 mm.   
     
     
         3 . The backpack of  claim 1 , wherein the lashing protrusion frame is detachably attached to the back plate of the backpack. 
     
     
         4 . The backpack of  claim 1 , wherein 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. 
     
     
         5 . The backpack of  claim 1 , wherein the storage space portion includes 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. 
     
     
         6 . The backpack of  claim 5 , further comprising upper and lower members and left and right members having lower edges 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. 
     
     
         7 . The backpack of  claim 6 , wherein the main partition pad is configured such that 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 in which the main partition pad is unfolded. 
     
     
         8 . The backpack of  claim 6 , wherein the upper and lower members and the left and right members are 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. 
     
     
         9 . The backpack of  claim 1 , wherein a waist support and a back support are detachably provided at a lower end of the first backpack member. 
     
     
         10 . A backpack comprising a backpack member having shoulder straps on both sides of a back plate of the backpack, a belt for fixing the backpack member, and a lashing lashing unit for lashing the backpack such that the backpack member does not sag from shoulders,
 wherein the lashing unit includes a lashing protrusion frame, which is fixed to the back plate of the backpack to extend upward of the backpack by a predetermined length,   wherein the lashing protrusion frame is configured such that flexible members are inserted into a plurality of poles to integrally and elastically support each of the poles, and a pole exposed upward of the backpack is provided with belt supporter which are provided on at least one spot for supporting a belt of the backpack, and   wherein both ends of the flexible member are fixed to poles positioned at the both ends of the flexible member among the plurality of poles, and the plurality of poles are configured to be separated from the flexible members while being inserted into and integrally linked to the flexible members when the plurality of poles are separated from the backpack.   
     
     
         11 . The backpack of  claim 10 , wherein the pole further includes a headrest for a user of the backpack. 
     
     
         12 . The backpack of  claim 10 , wherein the shoulder strap is provided with a pocket for installation of a cushion pad. 
     
     
         13 . The backpack of  claim 12 , wherein the cushion pad is configured to allow air injection. 
     
     
         14 . The backpack of  claim 12 , wherein the pocket is openable/closable by a fastener. 
     
     
         15 . The backpack of  claim 12 , wherein an inside of the cushion pad includes a plurality of partitions that allow the air injection. 
     
     
         16 . The backpack of  claim 1 , wherein the lashing protrusion frame is formed through a plurality of pole coupling portions, in which at least one of the pole coupling portions includes a pole diffraction unit which is linked to both end portions of adjacent poles so as to diffract the adjacent poles based on the both end portions of the adjacent poles. 
     
     
         17 . The backpack of  claim 16 , wherein the pole diffraction unit is provided with holders for supporting both end portions of adjacent poles so that the adjacent poles are configured to be perpendicular to each other. 
     
     
         18 . The backpack of  claim 16 , wherein the pole coupling portion having no pole diffraction unit has a wire inserted into the adjacent poles to hold the adjacent poles. 
     
     
         19 - 22 . (canceled)