EP0088378A1 - Safety school satchel - Google Patents

Abstract

The safety school satchel comprises a reinforcing portion (29) and a dorsal plate (30) having an anatomic shape and comprising active areas for respiration. At the junction of the dorsal plate (30) and the upper edge of the reinforcing portion, there is mounted a nucha protection padding (1), while addition pockets (2) are arranged on the upper portion the back portion and the side of the satchel. Such padding and pockets absorb, in case of an accident, impact energy, and the reinforcement portion (29) and the dorsal plate (30) provided with padding (8, 9, 24) are also arranged to this effect. All the closing devices (15), hooks (21) or boucles (26) arranged on the satchel are covered with protections, andsignalling strips (17) and reflecting devices (15), optionally well visible signalling lamps are attached to the satchel.

Description

The invention relates to a safety school bag with an inserted stiffening part and an anatomically shaped back plate with breathable zones.

A school bag is known from DE-GM 76 19 523, which is provided with cat eye strips in order to draw attention to the pupil in road traffic and thus to increase its safety. On the one hand, the satchel shown there does not make a significant contribution to increasing the safety of the pupil, rather the arrangements of cat eyes shown there bring additional injury possibilities with it.

From DE-GM 75 39 534 a school bag is known, in the construction of which at least some considerations have been taken into account with regard to the shape of the body and avoidance of additional injury possibilities. However, this satchel also does not offer adequate protection in the event of an accident.

From the German published documents 25 36 834, 26 24 799 and 27 58 322 school bags are known which have padded back parts. These satchels are carried on the back and hang on shoulder straps. The upholstery avoids the direct and long-term unpleasant contact of the stiff satchel with the back, but due to its shape and uniform distribution over the entire surface, it does not ensure that the load is properly distributed. Furthermore, the well-known satchel is going back and forth while running swing, because the continuous upholstery provided there does not guarantee lateral support. In addition, increased sweat formation occurs in the known back plates, since an air flow between the back plate and skin or clothing is not possible.

Due to the ever increasing volume of traffic, school beginners on the way to school are known to be very at risk. Since every schoolchild now carries teaching aids, possibly also gymnastics, snacks, etc. in a school folder or satchel, it must be considered how these objects can be combined in a satchel. On the one hand, the often heavy school bags can cause poor posture if they are not properly trained, on the other hand they offer the possibility of injury due to protruding parts such as buckles etc.

In no case, however, are the common satchels designed so that they not only do not injure, but even protect against accidents.

It is therefore an object of the present invention to show a satchel which, due to the combination of different features, avoids or corrects postural damage, excludes the possibility of injury and avoids traffic accidents by warning devices or helps to reduce the damage occurring in the event of an accident.

This object is achieved by a safety satchel according to the preamble, which is characterized in that to secure the upper edge of the stiffener partly a neck pad is attached to the back plate as well as additional pockets on the top, the back and the sides of the satchel, which absorb shock energy in the event of an accident as well as the correspondingly designed stiffening part and the back plate provided with cushions, that all fastening devices attached to the satchel, Hooks or buckles are defused by covers and that warning stripes and reflectors, possibly warning lights, are attached to the satchel in a clearly visible manner.

Preferably, one of the additional pockets is designed as a color-coded first aid bag, and one of the additional pockets is designed as a loose, soft fabric pocket approximately the width of the satchel and fastened by means of the hooks on the back of the satchel so that they essentially extend from the top to the top bottom of the satchel is enough.

In a preferred embodiment of the inventive safety satchel, one of the additional pockets, which is formed on the back of the satchel, begins below the reflectors, extends essentially to the lower end of the satchel, has essentially the same width as the satchel and carries at least one Warning stripes.

Furthermore, in the safety school satchel according to the invention, the additional pockets attached to the sides of the satchel preferably form a pocket over substantially the entire height and depth of the satchel. On the other side of the satchel, two smaller pockets are formed one above the other, one of them of these smaller bags is a color-coded first aid bag. As an additional safety measure, the pockets can be securely closed with Velcro or zippers. Here, the satchel has transverse straps connected to its side walls on its upper side, which can be placed one on top of the other and fixed to one another by means of a Velcro fastener, so that they prevent the satchel from gaping apart.

In a further preferred embodiment, the back plate is designed in such a way that the support is provided via four cushion beads separated from one another by depressions. The upholstery beads are worked out or protrude from the upholstery in such a way that the upholstery beads rest on the one hand in the area below the shoulder blades and between the shoulder blades and on the other hand in the area of the sacrum. The area of the spine is left open by a vertical, continuous recess.

This design of a back part ensures that the load is distributed over insensitive areas of the back and the carrier can still move relatively freely. The recesses also ensure a certain amount of air circulation, so that there is no increased sweat, so there is formation.

The lower upholstery beads are preferably formed higher than the upper ones, so that both people with a hollow cross and those with a rounded back, of course also people with a normal physique, Even heavy loads can be borne for a long time due to the uniform introduction of the forces.

At the upper corners, the back plate preferably has depressions which merge into the upper upholstery beads in such a way that the shoulder blades of the wearer remain largely free to move due to the resilience of the upholstery material. In this case, the depressions are preferably worked into the cushion a little less deeply than is the case for the depressions for keeping the spine free. With a concave shape, the load can be held securely on the shoulder blades even when subjected to lateral loads. The upholstery beads are also concave in shape and thus adapt to the transverse curvature of the back.

In a preferred embodiment, the upholstery together with the upholstery is made in one piece, but a layered construction can also bring advantages. Foamed, elastic synthetic resins, such as polyurethane foam, are suitable as upholstery material. Particularly in the case of the one-piece embodiment, a foam-molded back part lends itself here, in which, if necessary, larger hollow acid can be omitted in order to save weight. In order to fix the upholstery so formed and to hold it with the load, e.g. to connect the satchel, this padding is connected to a relatively rigid base plate, e.g. by gluing, welding or vulcanizing.

• Fig. 1 eine perspektivische Darstellung des Sicherheitsschulranzens mit sichtbarer rechter Seitenfläche;
• Fig. 2 eine perspektivische Darstellung des Sicherheitsschulranzens mit sichtbarer linker Seitenfläche und eingehängter Zusatztasche;
• Fig. 3a eine Aufsicht auf das Rückenteil des Schulranzens;
• Fig. 3b einen Schnitt entlang der Linie III-III aus Fig. 3a;
• Fig. 4 eine perspektivische Teilansicht des Schulranzens mit aufgeklapptem Deckel;
• Fig. 5 eine perspektivische Ansicht auf die Unterseite des Schulranzens;
• Fig. 6 eine perspektivische Ansicht des Versteifungsteils;
• Fig. 7 eine perspektivische Draufsicht auf ein Rückenteil mit daran befestigter Last;
• Fig. 8 eine schematische Darstellung der Auflagezonen des Rückenteils auf dem Rücken eines Trägers;
• Fig. 9 einen schematischen Längsschnitt durch ein Rückenteil und einen Körper mit Hohlkreuz;
• Fig.10 einen schematischen Längsschnitt durch ein Rückenteil und einen normal ausgebildeten Körper;
• Fig.11 einen Querschnitt entlang der Linie XI-XT aus Fig. 9:
• Fig.12 einen Querschnitt entlang der Linie XII-XII aus Fig. 9;
• Fig. 13 Horizontal- und Längsschnitte in verschiedenen Ebenen des Rückenteils;
• Fig. 14 eine perspektivische Ansicht auf die Unterseite des Rückenteils; und
• Fig. 15 einen Querschnitt durch das Rückenteil nach Fig. 14 entlang der Linie XV-XV.

Further preferred embodiments are given in the subclaims and the following embodiments play evident. For better understanding, preferred embodiments of the subject matter of the invention are explained in more detail below with the aid of illustrations. Here shows:

• Figure 1 is a perspective view of the safety school bag with visible right side surface.
• Figure 2 is a perspective view of the safety satchel with a visible left side surface and a suspended additional pocket.
• 3a shows a top view of the back part of the satchel;
• 3b shows a section along the line III-III from FIG. 3a;
• Figure 4 is a partial perspective view of the satchel with the lid open.
• Fig. 5 is a perspective view of the underside of the satchel;
• 6 is a perspective view of the stiffening part;
• Figure 7 is a top perspective view of a back member with a load attached thereto;
• 8 shows a schematic representation of the support zones of the back part on the back of a wearer;
• 9 shows a schematic longitudinal section through a back part and a body with a hollow cross;
• 10 shows a schematic longitudinal section through a back part and a normal body;
• 11 shows a cross section along the line XI-XT from FIG. 9:
• 12 shows a cross section along the line XII-XII from FIG. 9;
• Fig. 13 horizontal and longitudinal sections in different planes of the back part;
• 14 is a perspective view of the underside of the back part; and
• 15 shows a cross section through the back part according to FIG. 14 along the line XV-XV.

The preferred embodiment of the safety satchel according to the invention shown in FIG. 1, which can be worn on the shoulder straps 12 or the handle 14 and hung on the strap 13, has a cushion 1 which acts as a neck protection. In the case of accidents, it has been shown that school bags according to the prior art with their sharp upper edges not only cannot protect the wearer's head and neck, but can even injure them. For this reason, a lid pocket 2 is also provided in the top lid of the satchel, which is preferably filled with soft and shock-absorbing objects, such as a raincoat. The lid pocket 2 is closed, for example, by a zipper 15, over which a cover 16 lies. The cover 16 is in this case designed as a cloth strip attached at the top and open from below and protects both the user against injuries to the zipper and the contents of the pocket against moisture. Such closure covers are equally provided on the side pockets 3, 4, 5, 6 and 7 (see Fig. 2). On the back of the satchel there is another outer pocket 4; on the sides, for example, a large pocket 3 and. two small pockets 5 and 6, as shown in FIGS. 1 and 2. These side pockets or the back pocket work when they are in the recommended Filled with softer objects, such as clothing, snacks, etc., than shock-absorbing pillows. Since the pocket openings are closed by the covers 16, the risk of getting caught and an accident caused thereby is also reduced. One of the small side pockets is filled with bandages, plasters and a hemostatic bandage, i.e. a first aid kit, and contrasted in color with the rest of the satchel, for example. A student ID card with personal data such as place of residence, blood group etc. can be provided both in this side pocket 6 and in a transparent address pocket 31 attached to the large side pocket 3.

The clothing pocket 7 shown in FIG. 2 is fastened to the satchel in a fixed or removable manner and forms a further protective cushion in the event of an impact on the back. With detachable attachment of this pocket 7, e.g. The carabiner hooks 21 (see FIG. 1) are fastened to the satchel via carabiner hooks and, when not in use, are stowed in fabric pouches 22 which are firmly attached to the satchel cover. In this way, similar to pocket closures 15, sticking or direct injury is reliably avoided.

The satchel cover is closed by means of snap fasteners 19 fastened thereon and snap fastener plates 20 fastened to the satchel. Such snap fasteners have proven to be relatively harmless, especially if they are made with rounded edges. The snap locks 19 can have cat eyes 18, for example, and direct electrical lighting is also possible.

A preferred embodiment of the back cushion of the safety school bag is shown in FIGS. 3a and 3b. The satchel lies with the pads 8 on the shoulder blades, with the pads 9, depending on the size of the wearer, on the pelvis. The four cushions are separated from one another by a horizontal 10 or vertical breathing zone 11. In this way, the satchel does not become a nuisance even when worn for a long time, and even undisciplined students do not throw it around by the hand instead of carrying it on their back. The vertical breathing zone 11 in particular has a cushion 24 which serves to protect the spine. After the back plate 30 of the satchel preferably consists of a correspondingly shaped, somewhat harder material, such as plastic or cardboard, the cushions 8, 9 and 24 evenly distribute any impact pressure that may occur onto the bone structure and thus avoid selective overstressing. In addition, it was found that such a shape or upholstery of a back plate can prevent postural damage in children, possibly even correct it.

As shown in Fig. 4, the sides of the satchel are over cuer tabs 23, e.g. can be attached to each other by means of a Velcro fastener, pulled together and the bag contents thereby covered again. These brackets 23 also act, for example in the event of an impact obliquely from behind, as "friction dampers" and thus destroy kinetic energy. A transparent compartment 24, e.g. for the timetable.

5 shows the construction of the back cushion again. It can also be seen from this figure that in the embodiment shown the shoulder straps 12 are fastened to the bottom of the satchel by means of buckles 26. Such buckles have proven to be the only practicable solution of an adjustable belt buckle, since the different types of buckles known up to now either open by themselves or cannot be handled by children. On the other hand, the mandrels of such buckles represent a certain risk of injury, so that cover tabs 25 are provided in the embodiment shown here. These consist of a piece of hose that ends in a tab and are pushed onto the shoulder straps 12. If the buckle 26 is closed, the tab of the cover 25 can be pushed through the buckle and thus safely covers the mandrel of the buckle 26. An injury to this buckle is therefore almost completely impossible.

On the underside, the satchel has feet 27 for vertical placement.

6 shows the construction of the stiffening part 29 which is inserted into the interior of the satchel. The stiffening part is preferably made of plastic and has a rear side which faces the carrier, two side parts fastened to it in a tiltable manner and an equally fastened base part. The stiffening part 29 is inserted into the satchel, which is preferably made of plastic material, and fastened to it by means of push buttons 28. The stiffening part thus spans the otherwise soft satchel in the unfilled state. In contrast to the state of the Technology, however, this stiffening part folds in the event of an impact, the side walls may buckle and thus convert kinetic into thermal energy or deformation energy. The foldability of the stiffening part is also a further advantage if the satchel is to be stowed away, for example during the holidays, or during shipping or sales.

The satchel is preferably made in a clearly visible color and additionally has strips 17 which are coated with fluorescent colors. These light strips are attached to both the sides and the back of the satchel.

As shown in FIG. 7, the back part has a padding 106 which is fastened on a base plate 107. The actual load 108, the school satchel, which is fastened to shoulder straps 12, then hangs on the base plate 107. Bulb-shaped elevations 103, 103a, 104 and 104a are worked out of the padding 106. The lower upholstery beads begin at the lower edge of the upholstery 106 and form two approximately rectangular strips, while the upper beads 103 and 103a rise as hook-shaped elevations from the upper edge of the upholstery 6 inwards and again tapering to the side edge. The upholstery is symmetrical to the longitudinal axis, the longitudinal axis having to be thought through the middle of the depression 101.

The upper cushion beads 103 and 103a are separated from the lower cushion beads 104 and 104a by a horizontal depression 102.

The upper upholstery beads 103 and 103a merge from the inside to the outside or from the bottom upward into depressions 105 and 105a which are arranged at the upper corners of the upholstery 106.

8 shows where the support zones of the back part are located relative to the body of the wearer. In addition, this figure shows how the schoolbag 108 is advantageously arranged on the back part (dash-dotted line). The upper padding beads 103 and 103a result in contact surfaces of the back part, which are designated by 113 and 113a, the lower padding beads 104 and 104a are those which are designated by 114 and 114a. From this representation it can be seen that the shoulder blades 111 and 111a of the wearer are enclosed by the upper cushion beads 103 and 103a on their inside and underside, while the lower cushion beads 104 and 104a come to rest in the area of the sacrum next to the spine. In any case, the spine 112 remains excluded.

9 and 10 show longitudinal sections through the back part along the lines IX-IX from FIG. 8. From these representations it can be seen that the load adapts well even with pathologically changed back shapes. The load 108 exerts a resulting force K, which is plotted as a vector in the figures. The force K is absorbed via the forces K ₁ (the shoulder load) and the forces K ₂ and K ₃ . This shows that both with a hollow cross of the carrier according to FIG. 9 and with a straight back of the carrier according to FIG. 10, the spatial distribution of the forces approximately remains the same, so that the desired advantages of the back plate are retained over a wide range, regardless of the body shape of the wearer.

Such as 9 and 10 can further be seen from FIGS., It makes the lower Polsterwülste 104 and 104a advanta- hafterv _l else to secure slightly higher than the upper Polsterwülste 103 and 103a also with a hollow back a support of the load in the region of the sacrum. A relatively deep recess 102 between the upper and lower cushion beads is also favorable for this.

11 and 12, horizontal sections through the back plate and carrier are shown according to the lines XI-XI and XII-XII from FIG. 9. 11 that the upper beads 103 and 103a come to rest between the spine 112 and the shoulder blades 111, while the indentations 105 and 105a leave the shoulder blades 111 relatively free to move. However, as soon as the lateral force acts on the load 108, the edges 115 and 115a of the upholstery come to rest on the shoulder blades 111 of the wearer due to the concave formation of the depressions 105 and 105a, so that a lateral hold is ensured. This lateral hold is also secured or reinforced by the concave design of the lower pads 104 and 104a, as is clearly shown in FIG. 12.

A more precise representation of the profiles of the back plate shown here is shown in FIG. 13. In the left half of this illustration there are increasing elevations of the back plate downwards, in the right half of the illustration increasing elevations of the plate to the right recorded. The horizontal sections 13.1 to 13.4 are plotted on the left, the vertical sections 13.5 to 13.7 in the right half. According to this illustration, the horizontal section 13.1, which is set approximately at the level of the shoulder blades 111, has a strong elevation in the region of the bead 103, which comes to rest between the shoulder blade 111 and the spine 112. The shoulder blades 111 lie under the depressions 115, so that they remain relatively free to move. The horizontal section 13.2 applied under the shoulder blades 111 shows the slightly concavely curved upper bead 103, which has a deeper recess 101 only in the region of the spine. The area of the horizontal recess 102 is shown in section 13.3, from which it can be seen that the back plate, viewed horizontally, runs approximately straight in this zone. The horizontal section 13.4 is made in the area of the lower cushions 104, which are slightly raised in the outer area and fall in the direction of the central depression 101, so that a concave cavity is formed to secure the lateral hold.

The vertical section 13.5, which is set approximately at the level of the shoulder blade center, shows the depression 105a which runs uniformly on the outside in the vertical direction and merges downwards into the upper bead 103a. The bead 103a is separated from the lower bead 104a by the horizontal depression 102, the surfaces of the two beads can be connected in the vertical direction by an imaginary line, the upper pad 103a being thinner than the lower pad 104a. The vertical section 13.6 is applied in the area between the spine 112 and the shoulder blade 111 shows, viewed from top to bottom, the increasing thickness of the pads 103a and 104a, which are separated from one another by the horizontal depression 102. The area of constant depth of the depression 101 is shown in section 13.7.

14 and 15 show how the padding 106 can advantageously be provided with weight-saving recesses 109. The recesses 109 are advantageously distributed in a uniform pattern over the entire back plate in order to achieve uniform cushioning. The depth of the recesses 109 corresponds to the thickness of the upholstery, so that material of approximately constant thickness remains between the recesses 109 and the surface of the upholstery 106, as is shown in the sectional drawing in FIG. 15.

The recesses 109 can of course also be distributed in other patterns, so that e.g. result in stiffer and less rigid zones of upholstery.

Claims (12)

1. Safety school bag with an inserted stiffening part and anatomically shaped back plate with breathable zones, characterized in that to secure the upper edge of the Additional pockets (2, 3, 4, 5, 6, 7) are attached, which also absorb impact energy in the event of an accident, such as the stiffening part (29) designed accordingly and the back plate (30) provided with cushions (8, 9, 24), that all closure devices (15), hooks (21) or buckles (26) attached to the satchel are defused by covers (16, 22, 25), and that warning strips (17) and reflectors (18), possibly warning lights ( 18) are attached. 2. Safety satchel according to claim 1, characterized in that one of the additional pockets is designed as a color-coded first aid bag (6). 3. Safety satchel according to one of the preceding claims, characterized in that one of the additional pockets is designed as a loose, soft fabric pocket (7) in approximately the satchel width, which is fastened by means of the hooks (21) on the back of the satchel so that it is in the essentially extends from the top to the bottom of the satchel. 4. Safety satchel according to one of the preceding claims, characterized in that one of the additional pockets (4) which is formed on the back of the _school satchel begins below the reflectors (18) and extends essentially to the lower end of the satchel and in has essentially the same width as the satchel and carries at least one jarn strip (17). 5. Safety schoolbag according to one of the preceding claims, characterized in that of the attached pockets on the sides of the satchel a pocket (3) is formed over substantially the entire height and depth of the satchel, but on the other side of the satchel two smaller one above the other Bags (5, 6) are designed, one of these smaller bags (6) being designed as a color-coded first aid bag, the bags being able to be securely closed by means of Velcro fasteners or zippers. 6. Safety satchel according to one of the preceding claims, characterized in that the satchel has transverse straps (23) connected to its side walls on its upper side, one above the other can be placed and fixed to each other by means of a Velcro fastener, so that they prevent the satchel from gaping apart. 7. Safety satchel according to one of the preceding claims, characterized in that the back plate for support has four upholstery beads, namely two upper (103, 103a) and two lower (104, 104a), which are separated from one another by depressions (101, 102) Upholstery (106) are worked out so that the upholstery beads only have body contact in the area below the shoulder blades and between them and in the area of the sacrum with the recess in the spinal area. 8. Safety schoolbag according to claim 7, characterized in that the lower cushion beads (104a, 104) higher than the upper cushion beads (103, 103a) are worked out from the padding (106), so that even with physical abnormalities of the wearer, such as e.g. Hollow cross, the body contact with the four upholstery beads (l03,103a, 104,104a) is guaranteed. 9. Safety schoolbag according to one of claims 7 or 8, characterized in that the upper cushion beads (103, 103a) are arranged so that the shoulder blades of the wearer come to rest largely freely movable in depressions (105) of the padding (106). 10. Safety schoolbag according to one of claims 7 to 9, characterized in that the upholstery beads (103,103a, 104,104a) and optionally the depressions (105) of the upholstery (106) so in the transverse direction are concavely shaped so that there is a lateral hold of the back cushion over the horizontal arch of the back of the wearer. 11. Safety schoolbag according to one of claims 7 to 10, characterized in that the padding (106) with the cushion beads (103,103a, 104,104a) in one piece, preferably made of polyurethane or the like, optionally with a weight-reducing recess in larger cavities (109) is. 12. Safety school bag according to one of claims 7 to 11, characterized in that the padding (106) on a relatively rigid base plate (107) is fixed to ensure the shape retention.

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