Backpack especially for cyclists

Abstract

Backpack especially for cyclists with two shoulder straps (5a, 5b), with a pack sack (8) and with a flat back panel (2) with a flow guidance system for thermoregulating the body temperature of the backpack wearer during sports activities, wherein the flow guidance system consists of coordinated separate individual components, with a first component K1, which consists of projections (1) provided on the flat back panel (2) in the shoulder area, which serve as a wind guard to increase the airflow (4) towards the back area, with a second component K2, which consists of inlet openings (50a) at the shoulder strap attachment, which serve to further increase the airflow (4) in the back area and a third component K3, consisting of elongated air guide elements (12) that redirect the airflow (4) from the shoulder area towards the lower spine, and a fourth component consisting of a diffuser (3) provided at the outlet of the airflow (4) in the lower edge area of ​​the pack sack (80b), at which the airflow (4) widens again to create a to avoid the stagnation effect of the airflow (4).

Description

[0001] The invention relates to a backpack, especially for cyclists.

[0002] Backpacks are used in many sporting activities by skiers, mountaineers, or cyclists.

[0003] The right back system is crucial for the carrying comfort of a backpack. There are two fundamentally different principles of back systems: body-contact back systems and ventilated back systems. With ventilated back systems, there is a space open on three sides (sides and bottom) between the pack and the wearer's back, allowing air to circulate freely. The backpack only rests against the shoulders and lower back. A frame and a highly breathable fabric (mesh) keep the backpack at a distance. This provides good ventilation for the wearer's back, especially during athletic activities. However, a disadvantage of these ventilated back systems is that the center of gravity is positioned relatively far from the back due to the large distance between the pack and the wearer's back.The backpack therefore sits less securely on the back, which is particularly disadvantageous during rapid movements. Body-contact back systems offer virtually no ventilation, but the backpack's center of gravity is closer to the back.

[0004] US patent 2017 / 0027806A1 discloses a backpack in which a strip with several nubs is provided on the side facing the wearer, extending from the shoulder straps. The nubs serve as a massage aid. Simultaneously, the nubs create a gap between the wearer's back and the back panel of the backpack, allowing air to circulate and providing ventilation.

[0005] FR 2 700 252 A3 also describes a backpack in which a pad is provided on the actual back wall of the backpack, featuring several air channels running parallel to the longitudinal axis of the backpack. The airflow flows relatively far away from the wearer's back and thus contributes little to cooling.

[0006] US patent 6,325,262 B1 describes a special backpack for sports applications, featuring a highly breathable mesh back panel that rests against the user's back. Air flows into the back panel at the rider's neck.

[0007] A backpack with a back ventilation zone is known from US 8 672 203 B2.

[0008] All known backpacks have one or more of the following disadvantages: a) Large distance between back and load b) The volume of the entire backpack is relatively high c) low airflow in the immediate back area d) For a sport cyclist with a strongly curved back and an aerodynamic posture, a rigid frame is very uncomfortable. e) The mesh is essentially flat, i.e., 2-dimensional, in the unsupported area. f) Insufficient climate control function g) Insufficient heat dissipation, especially in critical body regions

[0009] The object of the invention is to provide a backpack, especially for cyclists, that does not have the aforementioned disadvantages, that enables optimal heat and moisture dissipation, and that ensures optimal comfort in addition to optimal climate comfort while maintaining high mobility.

[0010] This problem is solved by the features specified in the characterizing part of claim 1.

[0011] Advantageous embodiments of the invention are specified in the dependent claims.

[0012] The invention is explained in more detail below with reference to an embodiment shown in the drawing.

[0013] They show: Fig. 1 Perspective view of a backpack according to the invention with a cyclist Fig. 2. Schematic top view of the back area of ​​a cyclist Fig. 3 Top view of a backplate with multiple air guide elements Fig. 4 Front view of a cyclist with backpack removed Fig. 5a Schematic side view of a cyclist with backpack and backplate according to a first embodiment. Fig. 5b Schematic side view of a cyclist with backpack and backplate according to a second design.

[0014] In Fig. Figure 1 shows a perspective view of a backpack according to the invention, including a cyclist. The cyclist is depicted in his typical position. The backpack essentially consists of a pack 8, which is secured to the cyclist's back by two shoulder straps 5a, 5b and a hip belt 6. The pack 8 has a back panel 2, which is kept at a distance from the cyclist's back by air guide elements 7. In this side view, the overhang 1 at the upper edge 80a of the pack 8 is clearly visible. This overhang 1 serves as a wind deflector (airscope). A diffuser 3 is provided at the lower edge 80b of the pack 8; its function will be discussed in more detail below. The shoulder strap 5a has recesses 50a at its attachment point to the pack 8. The airflow 4 is indicated by a dashed line with arrows.

[0015] Fig. Figure 2 shows a schematic view of the cyclist from above, with the pack 8 and back panel 2 removed. The exposed air guide elements 7 are therefore visible, showing individual airflow lines 4. It is clearly recognizable that the airflow passes through the openings 50a, 50b of the shoulder straps 5a, 5b. The effect of the diffuser 3 is clearly visible in the area of ​​the lower edge of the pack 80b.

[0016] Fig. Figure 3 shows a top view of back panel 2 with individual air guide elements 7. The diffuser 3 is also clearly visible here. The overhangs 1 are clearly visible in the area of ​​the upper edge of the pack sack 80a. In this area, the air guide elements 7 are wider than in the area of ​​the lower edge of the pack sack 80b. The flow channels taper towards the lower area. The area without air guide elements serves as the diffuser 3. The width of this area b is smaller than the width a of the inlet opening in the upper area between the two middle air guide elements 12.

[0017] Fig. Figure 4 shows a frontal view of the cyclist. In this illustration, the protrusions 1, 20 in the shoulder and hip areas are clearly visible. The openings 50a, 50b, 50c, 50d in the shoulder strap 5a, 5b allow the airflow to flow even more freely.

[0018] Fig. Figure 5a schematically shows a cyclist in side view with a backpack and back panel according to a first design. The back panel is also shown separately in profile. The cross-section is approximately S-shaped.

[0019] Fig. Figure 5b schematically shows a cyclist in side view with a backpack and back panel according to a second design. The back panel is also shown separately in profile. The cross-section is purely convex.

[0020] In the explanations according to Fig. 5a, Fig. 5b The flow in the mid-back region is increased by the Bernoulli effect.

[0021] The function of the invention is explained in more detail below. Several coordinated components direct the airflow 4 generated by the wind generated while riding towards the back areas, which tend to heat up more. This significantly increases heat dissipation / moisture removal, thus ensuring optimal thermoregulatory climate comfort and a high level of wearing comfort.

[0022] Thanks to the flexible back panel 2, the backpack always fits snugly against the athlete's back without restricting freedom of movement during sports activities. The air guide elements 12 define the distance to the athlete's back. The thickness of the air guide elements is approximately 20 mm. This thickness can vary in different areas of the back. Typically, the distance in the lower back area is greater than 30-40 mm. Due to this small distance, the backpack's center of gravity is very close to the body.

[0023] The airflow generated during travel is directed towards the spine by the wind deflectors 1, 20. The special arrangement and design of the air guide elements 12 ensures a high airflow and, if necessary, good air turbulence. This optimally ventilates the spinal region, where the highest heat generation occurs, and promotes heat dissipation.

[0024] The diffuser 3 in the lower back area prevents the airflow 4 from stagnating in this area. The distance between the back and the back panel can be 40 mm here.

[0025] Extensive fluid dynamics studies and simulations have shown that the coordinated components deliver the desired effect. Tests in an air duct have demonstrated that the main airflow enters the backpack's back ventilation zone via the rider's shoulder and neck area. An additional airflow also enters the back ventilation zone from the side. In the center of the back ventilation zone, the specially shaped air guide elements 12 ensure a targeted airflow and, if necessary, create significant turbulence, thus providing a strong cooling effect. • In contrast to known backpack backs which are flat in the area of ​​the musculoskeletal system, the backpack back of this invention is adapted to the curvature of the shoulder.

[0026] Optionally, height adjustment via the upper shoulder straps can be provided. This allows the athlete to variably adjust the height of the overhang. They can thus choose between "greater ventilation" or "better stabilization." Adjustment systems are generally common in backpacks. Many sports-oriented backpacks have such adjustment systems (also called load positioning) to position the backpack weight closer to or further away from the shoulder area, depending on the wearer's preference.

[0027] According to the invention, the adjustment system has an additional function: as soon as it is opened (i.e., backpack weight further away from back = greater distance between upper backpack back area and shoulder strap = more ventilation through increased windbreak function), the ventilation is improved.

[0028] The upper part of the back plate is adapted to the anthropometric shape of the shoulder girdle (shoulder curvature), i.e. sagittal plane: slight curvature ventrally (forward) and frontal plane: slight inclination from the base of the neck laterally. • The shoulder straps / shoulder carriers are designed to be breathable near the suspension point on the backpack back up to the height of the Acromion.

Claims

[1] Backpack, especially for cyclists, with two shoulder straps (5a, 5b), with a pack sack (8) and with a flat back panel (2) with a flow guidance system for thermoregulating the body temperature of the backpack wearer during sports activities, wherein the flow guidance system consists of coordinated separate individual components, with a first component K1, which consists of projections (1) provided on the flat back panel (2) in the shoulder area, which serve as a wind guard to increase the airflow (4) towards the back area, with a second component K2, which consists of inlet openings (50a) at the shoulder strap attachment, which serve to further increase the airflow (4) in the back area and a third component K3, consisting of elongated air guide elements (12) that redirect the airflow (4) from the shoulder area towards the lower spine, and a fourth component consisting of a diffuser (3) provided at the outlet of the airflow (4) in the lower edge area of ​​the pack sack (80b), at which the airflow (4) widens again to create a to avoid the stagnation effect of the airflow (4). [2] Backpack according to claim 1, characterized by , that a fifth component K5 is provided, consisting of protrusions (20) in the hip / rib area, which serves to increase airflow in the lower back area. [3] Backpack according to one of the preceding claims, characterized by , that the curvature of the back plate (2) runs opposite to the curvature of the cyclist's back in order to achieve an increase in airflow (4) in the mid-back area due to the Bernoulli effect. [4] Backpack according to any of the preceding claims, characterized by , that in the area of ​​the diffuser (3) the distance between the backplate (2) and the back of the cyclist is increased. [5] Backpack according to any of the preceding claims, characterized by , that the components are coordinated in such a way that the airflow (4) is directed towards the back areas of the cyclist, which have higher temperatures during sporting activity.

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