Backpack frame

Abstract

To provide a backpack with improved carrying comfort.SOLUTION: A backpack is provided, including a pocket demarcated by a dorsal wall opposite the back of the user when the backpack is carried, and a frame partially fixed to the dorsal wall, the frame including a structural portion that enables shaping the form of the dorsal wall. The frame includes an extension, connected to the structural portion, extending in a direction towards the back of the user from the structural portion, the extension being designed and arranged so as to define a support section located in the lumbar zone of the user when the backpack is carried. The structural portion of the frame forms a camber such that a median portion of the structural portion is further away from the back of the user than its upper and lower ends.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a hiking backpack. A backpack in the sense of the present invention refers to a load carrying device having a rear main air chamber defined by a rear partition facing the back of the user when the backpack is worn, and two shoulder straps fixed to the rear partition. [Background technology]

[0002] In order to improve comfort and ventilation of the back, some backpacks incorporate a frame that shapes the back partition of the main rear air chamber. For example, documents EP 2 275 000 and DE 19932498 propose a frame that is partially fixed to the back partition, which on the one hand shapes the back partition so as to form a ventilation space between the middle partition for covering the user's back and the back partition, and on the other hand is designed to transfer the load to the pelvis, more specifically via the ilium to the waist. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] EP 2 275 000 [Patent Document 2] DE 19932498 Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the invention is to propose a backpack with improved comfort.

[0005] Another object is to propose a backpack that allows good load transfer.

[0006] Another object is to propose a backpack which ensures good ventilation of the back when worn. [Means for solving the problem]

[0007] The subject of the present invention is therefore An air chamber defined by a back partition that faces the user's back when the backpack is worn; a frame that is partially fixed to the back partition and includes a structure that allows the back partition to be shaped; It is a backpack including.

[0008] The backpack is characterized in that the frame includes an extension connected to the structure and extending from the structure toward the user's back, the extension being designed and arranged to define a support section located at the user's waist when the backpack is worn. Furthermore, the structure of the frame forms a curvature such that a central portion of the structure is farther from the user's back than the upper and lower ends of the structure when projected onto a sagittal plane.

[0009] This frame thus creates, on the one hand, a ventilation space between the back and the rear air chamber, and on the other hand allows the load to be transferred to the lower back, i.e. to a support zone that reduces pain caused by fatigue during long periods of carrying and improves comfort. This configuration allows the lower back to be compressed via the extensions. The extensions also give the frame a certain degree of flexibility, which reduces the effects of backpack movements, especially along the direction of the rear air chamber moving away from and towards the user, thus improving comfort.

[0010] Optionally, the invention may have any of the following optional features, either alone or in combination: - The frame consists of shaped cylindrical metal rods. The backpack includes an intermediate panel that connects the lower and upper portions of the back divider. - The intermediate panel is stretched between the lower and upper parts of the rear partition. - The frame is inserted between the rear partition and the middle partition. - The backpack includes a belt connected to a lower portion of the back partition, the belt including an inner partition for contacting the user's body when fastened and an outer partition opposite the inner partition, and the extension portion is configured so that the support section contacts the outer partition of the belt at the user's waist position when the backpack is worn. - The support section of the extension extends transversely over at least 3 centimeters. - the frame includes a lower portion forming two open lower loops arranged vertically at the same height and spaced apart transversely, the two lower loops being connected by a central lower portion defining an extension, the central lower portion being arranged so as to be closer to the user's back than the structural portion of the frame when projected onto the sagittal plane. - The frame is removably attached to the rear partition. - The support compartment is located 60-140 mm above the bottom of the frame when projected onto the sagittal plane.

[0011] The invention will be better understood from the following description and the accompanying drawings, in which: [Brief description of the drawings]

[0012] [Figure 1] 1 is a perspective view of a backpack according to a first embodiment of the present invention. FIG. [Diagram 2] FIG. 2 is a rear view of the backpack of FIG. 1. [Diagram 3] FIG. 2 is a side view of the backpack of FIG. 1 when worn. [Figure 4] FIG. 2 is a side view of the backpack of FIG. 1 when worn. [Diagram 5] FIG. 1 is a front view of a first embodiment of a backpack frame. [Figure 6] FIG. 6 is a side view of the frame of FIG. 5. [Figure 7] FIG. 13 is a front view of a second embodiment of a backpack frame. [Figure 8] FIG. 8 is a side view of the frame of FIG. [Figure 9]FIG. 13 is a front view of a third embodiment of a backpack frame. [Figure 10] FIG. 10 is a side view of the frame of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] In the following description, the X-axis is used as the direction from the outer compartment of the backpack to the boundary compartment with the user's back, the Y-axis is the direction from sideways or right to left, and the Z-axis is the direction from vertical or bottom to top. The markers should be interpreted in relation to the backpack standing upright in front of the user with the back of the backpack facing the user, as seen from the outer compartment of the backpack. The sagittal plane XZ is the plane containing the X-axis and the Z-axis. The frontal plane YZ is the plane containing the Y-axis and the Z-axis. The transverse plane XY is the plane containing the X-axis and the Y-axis.

[0014] The present invention relates to a rear air chamber 2 defined by an outer partition 22 and a rear partition 21 facing the back of the user when the backpack is worn, the rear partition 21 being defined by an upper part 21U and a lower part 21D; - two shoulder straps 3a, 3b fixed to the back partition 21, each of the shoulder straps including a first end connected to the upper part 21U of the back partition 21 and a second end connected to the lower part 21D of the back partition 21; a frame 4 partially fixed to the back partition 21, the frame 4 including a structure 41 that allows the back partition 21 to be shaped; The present invention relates to a backpack 1 comprising:

[0015] The invention relates more particularly to a special configuration of the frame 4, more specifically to an extension 42 connected to the structural part 41 and extending from it towards the back of the user, which extension is designed and arranged to define a support section 421 located at the lumbar region ZL of the user when the backpack is worn. The contact at the location of the lower back of the user when the backpack is worn is described as a zone of support, support or pressure, which corresponds to the transfer or transfer of the load between the load of the backpack and the user.

[0016] 1 to 6 show a first embodiment. In this example, the backpack 1 includes, in addition to the above-mentioned components, an intermediate panel 5 connected to the lower part 21D and the upper part 21U of the back partition 21. The intermediate panel 5 is intended to contact the user's back or its vicinity, and is a contact surface partition. This partition includes a central zone 51 having a ventilating structure for passing air, for example a multi-honeycomb fabric. The backpack 1 also includes a belt 6 connected to the lower part of the intermediate panel 5, i.e., connected to the lower part 21D of the back partition 21. The belt 6 is defined by an inner partition 61 for contacting the user's body when the belt is fastened, and an outer partition 62 facing the inner partition 61. According to one embodiment, the lower part of the intermediate panel 5 forms the rear part of the belt 6.

[0017] In this example, the frame 4 is inserted between the back partition 21 and the intermediate panel 5. The structural part 41 of the frame 4 can adjust the shape of the back partition 21. The structural part is characterized by a shape with a bulge that moves the center of the back partition 21 away from the back. In other words, in the projection of the structural part 41 onto the sagittal plane XZ, a concave curve facing the back is drawn. Meanwhile, the intermediate panel 5 is stretched between the lower part 21D and the upper part 21U of the back partition 21. Thus, with this configuration, a ventilation space can be formed behind the user between the back partition 21, which is bulged by the structural part 41 of the frame 4, and the intermediate panel 5. The central ventilation part 51 of the intermediate panel 5 can allow sweat on the back to escape and / or allow air to pass through to dry the sweat.

[0018] In this first embodiment, the frame 4 includes an upper portion 43, a lower portion 44, and a connecting portion 41 that connects the lower portion to the upper portion. Here, the connecting portion 41 of the frame defines a structural portion that adjusts the shape of the back partition 21. This structural portion 41 forms a curve such that, when projected onto the sagittal plane XZ, the central portion of this connecting portion is farther away from the user's back than the upper and lower ends of this structural portion 41.

[0019] In this example, the frame 4 forms, on its lower portion 44, two open lower loops 441a, 441b that are arranged at the same height in the vertical direction and spaced apart from each other in the transverse direction. The two lower loops 441a, 441b are connected by a central lower portion 442 that defines an extension portion 42. This extension portion 42 is arranged so as to be closer to the user's back than the structural portion 41 of the frame 4 when projected onto the sagittal plane XZ. In other words, in any transverse plane XY along the height direction of the backpack, the extension portion 42 is configured to always be closer to the user's back than the structural portion 41 of the frame 4.

[0020] Here, the extension 42 includes a support section 421 that faces towards the top of the backpack and defines the top of the extension. This support section 421 extends along the transverse direction Y over a width Y421 between 10 and 90 millimeters. The width Y421 is preferably at least 3 centimeters. As shown in FIG. 4, the support section is sized and positioned to be located at the user's waist ZL when the backpack is worn. According to one embodiment, the support section 421 is positioned so that it is closer to the user's back than the bottom 443 of the frame 4 when projected in the transverse plane XY. Advantageously, the distance X421 from the bottom 443 of the frame 4 to the support section 421 when projected in the transverse plane XY is more than 10 millimeters, preferably less than 90 millimeters. Meanwhile, the support section 421 is advantageously spaced upwards from the bottom 443 of the frame 4 by a distance Z421 between 60 and 140 millimeters when projected in the sagittal plane XZ.

[0021] According to one embodiment, the extension 42 is designed such that the projection of the extension 42 onto the sagittal plane XZ forms an angle A42 of 0 to 20 degrees with the projection of the lower part of the structure 41 onto the same sagittal plane XZ, the angle A42 being preferably greater than 5 degrees.

[0022] As mentioned above, the frame 4 is advantageously inserted between the rear partition 21 and the intermediate panel 5, i.e. the belt 6. In this example, the extension 42 is configured such that a part, i.e. the support section 421, comes into contact with the outer partition 62 of the belt 6 at the level of the user's waist ZL when the backpack is worn.

[0023] Thus, the frame 4 provides support at the position of the user's lower back ZL when the backpack is worn, at least through the support section 421. Other parts of the extension 42 of the frame 4 also provide support at positions below the user's back. For example, a part of the outer central lower part 442 of the support section 421 also comes into contact with the outer partition 62 of the belt 6, thereby providing additional support to the lower part of the user's back when the backpack is worn.

[0024] In this example, the frame 4 is a molded cylindrical bar. The cross section of this bar can be a circle, a square or any other geometric shape. The frame can be of tubular construction to lighten the structure and improve comfort. Advantageously, the frame is made of metal to obtain good rigidity to shape the back partition and good flexibility to compress and cushion the lumbar region. However, other types of materials, for example plastic, can also be envisaged for the construction of the frame.

[0025] In this example, the frame 4 is partially fixed to the back partition 21 by four open pockets 21Ua, 21Ub, 21Da, 21Db. These pockets are formed by the back partition 21 and the intermediate partition 5, which are connected to each other at the four corners of the back partition 21: the upper right 21Ua, the upper left 21Ub, the lower right 21Da, and the lower left 21Db. These four pockets 21Ua, 21Ub, 21Da, 21Db are for receiving the corresponding parts of the frame, which, once set, will shape the back partition 21 and tension the intermediate partition 5. Additionally, the frame 4 is fixed to the back partition 21 by a central hook 211 connected to a connection 41 of the frame 4.

[0026] 7 and 8 show a second embodiment of the frame 4. In this example, the extension 42 is connected to the center of the structural part 41 of the frame 4, rather than to the lower end of the structural part 41 of the frame 4 as in the first embodiment. The extension 42 is designed and sized to form a support section 421 that is located at the user's waist ZL when the backpack is worn, as in the first embodiment.

[0027] 9 and 10 show a third embodiment of the frame 4. In this example, it is the central part of the structural part 41 of the frame 4 that forms the extension 42. This central part extends towards the back of the user so as to form, for example, a support section 421 that is located at the user's waist ZL when the backpack is worn. In this position, it moves away from the back partition 21. With its lower part, below the support section, the structural part 41 turns again towards the rear back partition 21 in order to give the back partition the desired shape.

[0028] Other constructions are also conceivable, provided that the frame 4 includes an extension 42 connected to the structural part 41 and extending from the structural part towards the user's back, the extension being designed and positioned to form a support section 421 located at the user's lower back ZL when the backpack is worn.

[0029] In each of the above embodiments, the frame 4 is removably attached to the rear partition 21. This allows the frame to be replaced if it breaks. Also, if the frame is removed, the backpack becomes more compact when stored.

[0030] The present invention is not limited to the embodiments described above by way of example, but aims to protect all equivalent configurations, for example combinations of the embodiments.

[0031] The present invention is not limited to the above-described embodiments, but extends to all embodiments covered by the appended claims. [Explanation of symbols]

[0032] 1. Backpack 2 Rear air chamber 21 Rear partition 21U upper part 21Ua Top right pocket 21Ub upper left pocket 21D Lower part 21Da Lower right pocket 21Db Bottom left pocket 22 Outer partition 3 Shoulder straps 4 Frames 41 Structural section 42 Extension 421 Support Section 43 Top 44 Lower 441 Open Loop 442 Lower center 443 Bottom 5 Middle Panel 51 Central ventilation section 6 Belt 61 Internal partition 62 Exterior Partition

Claims

1. An air chamber (2) defined by a back partition (21) facing the user's back when the backpack is worn; a frame (4) partially fixed to the back partition, the frame (4) including a structure (41) that allows the back partition to be shaped; A backpack comprising: the frame includes an extension (42) connected to the structure and extending from the structure towards the back of the user, the extension being constructed and arranged to define a support section (421) located at the waist (ZL) of the user when the backpack is worn; The backpack (1) is characterized in that the structural portion of the frame is curved so that, when projected onto a sagittal plane (XZ), the central portion of the structural portion is farther away from the user's back than the upper and lower ends of the structural portion.

2. 2. The backpack of claim 1, wherein the frame is made of formed cylindrical metal bar.

3. 2. The backpack of claim 1, further comprising an intermediate panel (5) connecting the lower portion (21D) and the upper portion (21U) of the back divider, the intermediate panel extending between the lower portion and the upper portion of the back divider.

4. 4. The backpack of claim 3, wherein the frame is interposed between the rear divider and the intermediate panel.

5. 2. The backpack of claim 1, further comprising a belt (6) connected to the lower portion (21D) of the back partition, the belt including an inner partition (61) that contacts the user's body when the belt is fastened and an outer partition (62) opposite the inner partition, the extension portion being configured such that the support section (421) contacts the outer partition of the belt at the position of the user's waist when the backpack is worn, and the belt is connected to an intermediate panel.

6. 2. The backpack according to claim 1, characterized in that the frame includes a lower part forming two open lower loops (441) arranged at the same height vertically and spaced apart from each other in the transverse direction, the two lower loops being connected by a central lower part (442) defining the extension part (42), the central lower part being arranged so that, when projected in the sagittal plane (XZ), it is closer to the back of the user than the structural part (41) of the frame.

7. 2. The backpack of claim 1, wherein the frame is removably attached to the back divider.

8. 2. The backpack according to claim 1, characterized in that the support section is spaced upward from the bottom (443) of the frame by a distance of 60 to 140 millimeters when projected in the sagittal plane (XZ).

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