Backpack

Abstract

The invention relates to a backpack (10) having a stowage space (18), which on its side facing the back of a user of the backpack is delimited by a back part (20). The backpack (10) includes a net element (12) and a frame arrangement (22), which for tensioning the net element (12) is designed in such a way that an intermediate space (24) is formed between the back part (20) and the net element (12) when the net element (12) is tensioned. The backpack (10) has two shoulder straps (14, 16) for carrying the backpack (10) on the user's back. The shoulder straps (14, 16) have end areas (42, 44) that cross the intermediate space (24) and are fastened to the back part (20).

Claims

1. A backpack comprising a stowage space delimited by a back part on a side of the stowage space facing the back of a user of the backpack, a first plate secured to the back part, a second plate secured to the first plate, such that the first plate is positioned between the second plate and the back part, a frame arrangement secured to the back part, a net element having an upper end and a lower end, wherein both the upper end and the lower end are affixed to the back part, wherein the frame arrangement is configured for tensioning the net element such that an intermediate space is formed between the back part and the net element when the net element is tensioned, and a first shoulder strap and a second shoulder strap for carrying the backpack on the user's back, each shoulder strap including a top end secured between the first plate and the second plate, and a bottom end secured to the back part.

2. The backpack according to claim 1, further comprising a horizontal arm, and wherein the frame arrangement includes a first leg extending in a vertical direction of the backpack and a second leg extending in the vertical direction of the backpack, the legs connected by the horizontal arm.

3. The backpack according to claim 2, further comprising a first fabric element fastened to the back part and covering the first plate.

4. The backpack according to claim 3, further comprising a second fabric element fastened to the first fabric element and covering the second plate.

5. The backpack according to claim 3, wherein the first fabric element includes at least one retaining element, the at least one retaining element configured to hold at least a portion of the frame arrangement.

6. The backpack according to claim 5, wherein the at least one retaining element comprises at least one tunnel.

7. The backpack according to claim 6, wherein the at least one tunnel includes a first tunnel and a second tunnel, wherein the first leg of the frame arrangement is disposed through the first tunnel, and the second leg of the frame arrangement is disposed through the second tunnel.

8. The backpack according to claim 2, wherein the frame arrangement comprises a lower partial area, and along the vertical direction of the backpack, the back part includes a crossmember and/or a U-shaped bracket and/or a third plate.

9. The backpack according to claim 8, wherein the U-shaped bracket includes two legs that are spaced a wider distance apart than the legs of the frame arrangement and wherein the legs of the U-shaped bracket are inserted into at least one insert pocket located on the back part of the backpack.

10. The backpack according to claim 9, wherein the legs of the frame arrangement are inserted into the at least one insert pocket located on the back part of the backpack.

11. The backpack according to claim 3, wherein the legs of the frame arrangement include first ends, a first leg distance defined by the distance between the first ends, second ends disposed vertically opposite on the legs from the first ends, a second leg distance defined by the distance between the second ends, and a minimum leg distance disposed between the first ends and the second ends and having a distance that is less than each of the first leg distance and the second leg distance.

12. The backpack according to claim 11, wherein the first plate includes a width, and wherein the minimum leg distance is less than the width of the first plate.

13. The backpack according to claim 1, further comprising a plurality of respective attachment points between the first plate and the second plate for securing the top ends of the shoulder straps.

14. The backpack according to claim 1, further comprising a crossmember disposed on the first plate.

15. The backpack according to claim 1, wherein the net element includes a first passage and a second passage, and wherein the first shoulder strap is disposed through the first passage and the second shoulder strap is disposed through the second passage.

16. The backpack according to claim 1, wherein the second plate is arched.

17. The backpack according to claim 1, wherein each of the first plate and the second plate have a width and a height, and wherein the width and the height of the first plate is greater than the width and the height of the second plate.

18. The backpack according to claim 17, wherein the first plate includes an upper area secured to the second plate.

19. The backpack according to claim 1, wherein the first plate and the second plate are comprised of polyethylene.

20. The backpack according to claim 1, further comprising a hip belt disposed on the back part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a rear view of a backpack, which on its side facing a user of the backpack has a net element, wherein a frame arrangement for tensioning the net element is provided, and wherein end areas of shoulder straps of the backpack are fastened to a back part of the backpack;

(2) FIG. 2 schematically shows the backpack according to FIG. 1 in a side view;

(3) FIG. 3 schematically shows components of the back part in one embodiment of the backpack;

(4) FIG. 4 shows the frame arrangement that tensions the net element in one variant of the backpack;

(5) FIG. 5 shows the frame arrangement that tensions the net element in another variant of the backpack; and

(6) FIG. 6 shows the frame arrangement that tensions the net element in another variant of the backpack.

DETAILED DESCRIPTION

(7) FIG. 1 shows a perspective view of a backpack 10, which on its side facing the back of a user or carrier of the backpack has a net element 12. Such a net element 12, also referred to as a mesh back, rests against the user's back when the user is carrying the backpack 10 on the back, and shoulder straps 14, 16 of the backpack 10 extend over the user's shoulders. A stowage space 18 (see FIG. 2) of the backpack 10 on its side facing the user's back is delimited by a back part 20.

(8) It is apparent from the illustration in FIG. 3 that a frame arrangement 22 is situated on the back part 20. The frame arrangement 22 is designed for tensioning the net element 12. When the net element 12 is tensioned, an intermediate space 2, clearly visible in FIG. 2, is formed between the back part 20 and the net element 12. Air can enter the intermediate space 24, since the user's back rests against the net element 12, not the back part 20. This spacing between the net element 12 and the back part 20 provides for good ventilation of the back of the user or carrier of the backpack 10 when the backpack 10 is carried strapped to the back.

(9) It is apparent from FIG. 3 that the frame arrangement 22, which in the present case is formed by a thick bent wire and is therefore designed as a wire frame here, includes an upper transverse web 26. The frame arrangement 22 is inserted into a pocket 28 of the backpack 10 in the area of the upper transverse web 26. The pocket may be opened by means of a zipper, for example, to gain access to the frame arrangement 22 or the wire frame. The frame arrangement 22 may be removed from the backpack 10 in this way. A first leg 30 and a second leg 32 of the frame arrangement 22 extend downwardly from the upper transverse web 26, viewed in a vertical direction 34 of the backpack 10. The second leg 32 is schematically shown in the side view in FIG. 2.

(10) A free end 36 (see FIG. 3) of the first leg 30 is inserted into an insert pocket that is formed on the back part 20. Analogously, a free end 38 (see FIG. 3) of the second leg 32 is inserted into an insert pocket 40, schematically shown in FIG. 2. The insertion of the free ends 36, 38 of the frame arrangement 22 into the lower insert pockets, of which only the insert pocket 40 is shown, and the insertion of the upper area of the frame arrangement 22 into the upper pocket 28 result in tensioning of the net element 12, and thus, formation of the intermediate space 24 (see FIG. 2).

(11) In the present case, end areas 42, 44 of the shoulder straps 14, 16 are fastened to the back part 20. As a result, the end areas 42, 44 cross the intermediate space 24 that is formed between the net element 12 and the back part 20 (see FIG. 2). This ensures that a space is present between the net element 12 and the back part 20, also in the area of the shoulder straps 14, 16. This provides for improved ventilation of the back of the user of the backpack 10. In addition, deformation of the net element 12 is avoided, which may occur when the shoulder straps 14, 16 are fastened to the net element 12.

(12) The end areas 42, 44 of the shoulder straps 14, 16 in the present case extend through the intermediate space 24, slightly below an area of the backpack 10 in which the back part 20 and the net element 12 come together or converge at their respective upper end (see FIG. 2). In addition, it is apparent from FIG. 1 that the end areas 42, 44 of the shoulder straps 14, 16 are guided through two passages 46 that are formed in the net element 12. Accordingly, the net element 12 is particularly wide at the level of the end areas 42, 44 of the shoulder straps 14, 16. In addition, a respective partial area 48, 50 of the net element 12 to the side of the end area 42, 44, viewed in the transverse direction of the backpack 10, is offset toward an outer side of the backpack 10.

(13) It is apparent from FIGS. 1 and 2 that the net element 12 and the back part 20 converge toward one another at the level of hip belts 52, 54, which on their surface facing the user's back or hips are provided with an air-permeable material. In alternative embodiments of the backpack 10, instead of the hip belts 52, 54 only short hip flaps or the like may be provided, or the hip belts 52, 54 or hip flaps may be dispensed with altogether. It is also apparent from FIG. 2 that the stowage space 18 may be closed on the top side by means of a cover part 56 of the backpack 10.

(14) The design of the back part 20 and the fastening of the end areas 42, 44 of the shoulder straps 14, 16 to the back part 20 is explained with reference to FIG. 3. The back part 20 includes a first, comparatively large-surface plate element 58 that may be designed, for example, as a plastic plate made in particular of polyethylene (PE). The first plate element 58 is situated in a fabric element 60 designed in the manner of a covering, which is visible through the net element 12 in FIG. 1. This fabric element 60, into which the first plate element 58 is sewn, includes two tunnels 62, 64 (see FIG. 1) that are used to attach the first plate element 58 to the frame arrangement 22. Accordingly, the first leg 30 is guided through the tunnel 64, and the second leg 32 is guided through the tunnel 62, the tunnels 62, 64 preferably being tensioned toward the center of the back part 20. In the present case the legs 30, 32 support the first plate element 58 on its side facing the net element 12.

(15) The back part 20 includes a second plate element 66, which in particular is likewise designed as a plastic plate made of polyethylene (PE), for example, and which in the present case is slightly arched. Accordingly, the second plate element 66 essentially follows the course of an upper edge 68 of the first plate element 58. The end areas 42, 44 of the shoulder straps 14, 16 are fastened to the back part 20 in the area of the second plate element 66. In particular the end areas 42, 44 of the shoulder straps 14, 16 may be placed on the back part 20 at respective attachment points which, viewed perpendicularly with respect to the plane of the first plate element 58, are provided between the first plate element 58 and the second plate element 66. The slightly arched second plate element 66 is covered by a fabric element 70, which in the present case is sewn to the fabric element 60. Due to providing the second plate element 66 in the upper area of the first plate element 58, the back part 20 is well reinforced and particularly robust in the fastening area of the shoulder straps 14, 16. However, good flexibility is still imparted to the back part 20, which makes it particularly easy to bring the back part 20 into the arched shape shown in FIG. 2 in which the net element 12 is tensioned.

(16) The two legs 30, 32 extend past the fabric element 70 on the front side, i.e., on a side facing the user's back; the second plate element 66 is covered by the fabric element. In the variant of the backpack 10 shown in FIG. 3, an upper crossmember 72 is situated on a side of the first plate element 58 facing away from the frame arrangement 22, at the level of the second plate element 66. In this variant, the upper crossmember 72 is overlaid with a fabric element 74, which forms a tunnel.

(17) In the variant of the backpack 10 shown in FIG. 3, a U-shaped bracket 76 is situated in a lower partial area of the frame arrangement 22. Downwardly pointing legs 78, 80 of the bracket 76 lie in the area of wings 82, 84 of a third plate element 86, which is spaced apart from the first plate element 58 in the vertical direction 34 of the backpack 10. In the present case, the third plate element 86 is likewise designed as a plastic plate and in particular is made of polyethylene (PE).

(18) Free ends of the legs 78, 80 of the bracket 76 are inserted into insert pockets (not shown here) of the back part 20. These insert pockets, viewed in the transverse direction of the backpack 10, are spaced farther apart from one another than the insert pockets 40 into which the free ends 36, 38 of the legs 30, 32 of the frame arrangement 22 are inserted.

(19) The lower bracket 76 and the third plate or the third plate element 86 are provided in the backpack 10 shown in FIG. 1; however, these additional reinforcement elements of the back part 20 are optional. It is also possible for the back part 20 to have the third plate element 86, but not to be provided with the bracket 76.

(20) The upper crossmember 72 also does not have to be provided. Accordingly, only the frame arrangement 22 is shown in FIG. 4, without the additional reinforcement parts that extend in the transverse direction of the backpack, such as the crossmember 72, the bracket 76, and the third plate element 86, being present in the backpack 10. Thus, in one variant the backpack 10 may have only the back part 20 with the two plate elements 58, 66, and the frame arrangement 22 shown in FIG. 4.

(21) However, the configuration of the frame arrangement 22 may be described well with reference to FIG. 4. Thus, in a first area 88 the two legs 30, 32 have a minimum distance from one another. Toward the upper transverse web 26, this first area 88 is adjoined by a second area 90 in which the distance between the two legs 30, 32 becomes increasingly larger. As is apparent with reference to FIG. 6, however, in the second area 90 the distance between the two legs 30, 32 may also be constant. In a third area 92 which adjoins the first area 88 toward the free ends 36, 38, the distance between the legs 30, 32 once again becomes increasingly larger.

(22) FIG. 5 shows a configuration of the frame arrangement 22 corresponding to the configuration of the frame arrangement 22 shown in FIG. 4. However, the back part 20 of the backpack 10, which has the frame arrangement 22 shown in FIG. 5, additionally has the upper crossmember 72 shown in FIG. 3. However, in contrast to the embodiment of the back part 20 according to FIG. 3, neither the bracket 76 (see FIG. 3) nor the third plate element 86 (see FIG. 3) is provided in the lower area of the back part 20.

(23) In the back part 20 in another variant of the backpack 10, whose frame arrangement 22 is shown in FIG. 6, a crossmember 94 is provided in the lower partial area of the frame arrangement 22. The crossmember 94 here is situated at a transition from the first area 88 to the second area 90, in which the distance between the two legs 30, 32 is constant. For this purpose, for the back part 20 which has been brought into the arched shape by the frame arrangement 22 shown in FIG. 6, neither the U-shaped bracket 76 nor the third plate element 86 is provided (see FIG. 3).

(24) However, the back part 20 has a further crossmember 96 in the area of the upper transverse web 26 of the frame arrangement 22. A length of the crossmember 96 may be greater than the distance between the free ends 36, 38 of the frame arrangement 22.

(25) Furthermore, for the back part 20 of the backpack 10 having the frame arrangement 22 shown in FIG. 6, adjustability of the height of the shoulder straps 14, 16 may be provided. In particular, in the second area 90 in which the distance between the legs 30, 32 is constant, the shoulder straps 14, 16 may have a displaceable design along the frame arrangement 22 in the vertical direction 34 of the backpack 10.