초록 ▼

A backpack includes an accommodating body, two slings, and a plurality of sliding plates. The accommodating body has a rectangular horizontal bottom wall, a front wall, a rear wall, and two side walls. The front, rear, and side walls extend upwardly from the bottom wall, are interconnected removably

A backpack includes an accommodating body, two slings, and a plurality of sliding plates. The accommodating body has a rectangular horizontal bottom wall, a front wall, a rear wall, and two side walls. The front, rear, and side walls extend upwardly from the bottom wall, are interconnected removably to define an accommodating space thereamong, and are removable from one another so as to be coplanar with the bottom wall, thereby forming a stretcher. The slings are fastened to an outer side surface of the front wall. The sliding plates are attached removably to a bottom surface of the stretcher, and contact the ground.

대표청구항 ▼

1. A backpack comprising:an accommodating body having a horizontal bottom wall with front, rear, left, and right sides, two side walls extending respectively and upwardly from said left and right sides of said bottom wall, and front and rear walls extending respectively and upwardly from said front

1. A backpack comprising:an accommodating body having a horizontal bottom wall with front, rear, left, and right sides, two side walls extending respectively and upwardly from said left and right sides of said bottom wall, and front and rear walls extending respectively and upwardly from said front and rear sides of said bottom wall, each of said front, rear, and side walls being connected removably to two adjacent ones of said front, rear, and side walls along two opposite sides thereof so as to define an accommodating space that has an upper end opening, said accommodating body being stretchable such that said front, rear, and side walls are coplanar with said bottom wall so as to form a stretcher, each of said bottom, front, rear, and side walls having an inner side surface facing said accommodating space, and an outer side surface opposite to said inner side surface, each of said front and rear walls having left and right sides; two spaced-apart slings fastened to said outer side surface of said front wall of said accommodating body and disposed adjacent respectively to said left and right sides of said front wall of said accommodating body; and a plurality of sliding plates attached removably to an assembly of said inner side surfaces of said bottom, front, rear, and side walls of said accommodating body so as to contact the ground when said accommodating body is stretched and when said outer side surfaces of said bottom, front, rear, and side walls of said accommodating body constitute a top surface of said stretcher. 2. The backpack as claimed in claim 1, further comprising at least one pocket disposed on said outer side surface of one of said front, rear, and side walls of said accommodating body.3. The backpack as claimed in claim 1, further comprising a pull band that is fastened to an upper end of said rear wall of said accommodating body.4. The backpack as claimed in claim 3, wherein said pull band is U-shaped, and has two ends that are fastened to said upper end of said rear wall of said accommodating body.5. The backpack as claimed in claim 1, further comprising:a pair of breast and arm-retaining bands fastened respectively to said left and right sides of said rear wall of said accommodating body and having free ends that are interconnected removably so as to clamp a breast and two arms of an injured person between said rear wall of said accommodating body and said breast and arm-retaining bands; and a pair of waist-retaining bands fastened respectively to said left and right sides of said front wall and having free ends that are interconnected removably so as to clamp a waist of the injured person between said front wall of said accommodating body and said waist-retaining bands. 6. The backpack as claimed in claim 5, further comprising a pair of auxiliary retaining bands adapted to extend between two thighs of the injured person, each of said auxiliary retaining bands having a fixed end connected fixedly to said outer side surface of said front wall of said accommodating body and adapted to be disposed between two thighs of the injured person, and a movable end connected removably to an assembly of said waist-retaining bands.7. The backpack as claimed in claim 1, further comprising a cover wall extending rearwardly from an upper end of said front wall of said accommodating body so as to cover said upper end opening of said accommodating space in said accommodating body.8. The backpack as claimed in claim 7, wherein said cover wall of said accommodating body has an inner side surface that faces said accommodating space in said accommodating body and that is provided with two shin-retaining bands that are fastened to said cover wall and that are interconnected removably so as to clamp two shins of an injured person between said cover wall of said accommodating body and said shin-retaining bands.9. The backpack as claimed in claim 1, wherein said accommodating body further has a plurality of loop members fastened to an assembly of said inner side surfaces of said bottom, front, rear, and cover walls, each of said sliding plates having a first side surface, a second side surface opposite to said first side surface, and a plurality of hooks attached fixedly to said first side surface, said hooks of said sliding plates extending respectively through said loop members of said accommodating body so as to retain said sliding plates on said accommodating body when said accommodating body is stretched.10. The backpack as claimed in claim 9, wherein each of said sliding plates is rectangular and elongated, and has two tapered ends, said first side surface of each of said sliding plates being planar, said second side surface of each of said sliding plates having two curved ends.11. The backpack as claimed in claim 1, further comprising a breast-retaining unit that includes elongated first and second retaining members which are fastened to said outer side surface of said rear wall of said accommodating body and which are interconnected removably so as to clamp a breast of an injured person between said rear wall of said accommodating body and said breast-retaining unit.12. The backpack as claimed in claim 1, further comprising four U-shaped raising bands that are fastened respectively to said left and right sides of said front and rear walls of said accommodating body and that are pulled upwardly to raise said accommodating body from the ground.