ES1284604U - Expandable backpack (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Expandable backpack, comprising a first face (1), a second opposite face (2) suitable for resting on the user's back, two sides (3) and two upper and lower bases (4.1, 4.2), such that between All of them define a first containment compartment (5), with a first upper zipper (6) for access to it and, respective straps (7) for coupling to the user's shoulders, characterized in that it comprises - a second zipper (8) located in the lower half of the backpack, which runs along the first face (1), on both sides (3) and the two portions (2.1) of the second face (2) that are close to each other. to the sides (3), where the second rack section (8) located on the first face (1) is horizontal and is at a greater distance from the lower base (4.2) than the rest of its sections, and; - a fabric (9) having an upper end and a lower end fixed to the inner surface of the backpack, above and below the second zipper (8) respectively; where the fabric (9) presents a rest position when the second zipper (8) is closed and the fabric (9) is folded on itself inside the backpack and, a use position when the second zipper (8) It is open and the fabric (9) is extended as an extension of the first face (1), and such that the lower base (4.2) of the backpack is located in a vertical position as an extension of the second face (2) . (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

expandable backpack

Technical field of the invention

The present invention corresponds to the technical field of backpacks or containment elements, which have an internal compartment in which to deposit belongings, with a first upper zipper for access to it and two straps for coupling it to the user's shoulders.

Background of the Invention

Backpacks are an element traditionally used by minors and young people, both with a school function and with a sports function, and in both cases with the aim of containing and transporting everything they need for the activity they are going to carry out.

For some time now, with the appearance of laptops, electronic tablets..., they acquire a new use, for the transfer and protection of these devices, with which the age range of people who use backpacks has increased and It is no longer limited to children and adolescents, but also adults who use them to transport these devices to work.

In the state of the art there are some backpacks that allow an increase in volume and therefore in capacity, which is very practical for cases in which for some reason a greater load must be transported, so that the backpack in principle has dimensions and, if necessary, an expansion of the interior volume is allowed, which is normally achieved by increasing the distance between its front and back faces.

In the specific case of the containment of electronic devices, the use of backpacks comfortably and safely will depend on their size. Thus, with electronic tablets there will be no problem, since they usually have a size that fits in most backpacks, but in the case of laptops, they usually have dimensions that vary approximately between 15 and 17 inches , for the that it is very easy to run into the problem that some of this equipment does not fit in the backpack.

Thus, there is very little variety of 17.3-inch backpacks for electronic equipment, so consumers are very limited in their choice and most backpacks leave their equipment unprotected, since their greater length exceeds the height of the backpack and therefore, it stands out with respect to it.

This is inconvenient, because, although there may be specific backpacks for equipment of these sizes, they are too large, so their use is limited to transporting the devices, since they are not comfortable or practical backpacks for a broader use, of others. items and at any time. On the other hand, in the case of backpacks that allow an increase in volume, which could be understood as a solution to this problem, the reality is that the increase in volume is in terms of depth, but not in terms of height, which is what It is necessary in these cases, since the electronic equipment is not bulky, but rather flat, especially with greater height.

It would be necessary to find some means that allows the containment of this larger equipment, without being cumbersome and uncomfortable, since there is nothing in the state of the art that allows this problem to be solved.

Description of the invention

The expandable backpack presented here comprises a first face, a second opposite face suitable for resting on the user's back, both sides and two upper and lower bases, such that between all of them a first containment compartment is defined, with a first upper zipper for access to it and two straps for attaching it to the user's shoulders.

This backpack also comprises a second zipper located in the lower half of the backpack, which runs along the first face, both sides and respective portions of the second face close to the sides, where the section of the second zipper located in the first face is horizontal and is at a greater distance from the lower base than the rest of its sections.

Furthermore, the backpack comprises a fabric having an upper end and a lower end fixed to the inner surface of the backpack, above and below the second zipper, respectively.

In this way, the fabric has a rest position when the second zipper is closed and the fabric is folded on itself inside the backpack, and a use position when the second zipper is open and the additional fabric is spread out. mode of extension of the first face, and such that the lower base of the backpack is located in a vertical position as an extension of the second face.

With the expandable backpack proposed here, a significant improvement of the state of the art is obtained.

This is so because an expansion of the backpack is achieved in the vertical plane, increasing the containment capacity of larger electronic equipment, thanks to the extension of the fabric that allows the base of the backpack to become part of the second face of it, as an extension of its length. In this way, the backpack acquires a greater height that allows it to contain larger electronic equipment in a safe and effective way.

For greater security, it contains a flexible laminar body with which a second compartment is configured and elastic bands that, in the expanded position of this fabric, move to a vertical position by way of adjustment of the lower corners, which allows greater support of the equipment. .

With this, a backpack is achieved that, when necessary, can expand its height to contain electronic equipment in a safe way, but when the transport of this equipment is not required, it can be returned to its retracted position, in which it presents a much larger size. comfortable for the user. It is therefore a very practical expandable backpack that allows you to expand its capacity and in the specific case of electronic equipment, it manages to offer double functionality to contain equipment of various sizes.

Brief description of the drawings

In order to help a better understanding of the characteristics of the invention, according to a preferred example of its practical embodiment, it is provided as part part of said description, a series of drawings where, by way of illustration and not limitation, the following has been represented:

Figures 1.1 and 1.2.- Show perspective views of the expandable backpack in a rest and use position, respectively, for a preferred embodiment of the invention.

Figures 2.1 and 2.2.- Show respective views of the interior of the expandable backpack in a position of rest and use, respectively, depending on the electronic equipment contained, for a preferred embodiment of the invention.

Figure 3.- Shows an elevation view of the expandable backpack on its second face, for a preferred embodiment of the invention.

Detailed description of a preferred embodiment of the invention

In view of the figures provided, it can be seen how in a preferred embodiment of the invention, the expandable backpack proposed here comprises a first face (1), a second opposite face (2) suitable for resting on the back of the user, both sides (3) and two upper and lower bases (4.1, 4.2), such that between all of them a first containment compartment (5) is defined, with a first upper zipper (6) for access to it and, respective straps (7) for attachment to the user's shoulders.

This backpack also comprises a second zipper (8) located in its lower half, which runs along the first face (1), both sides (3) and respective portions (2.1) of the second face (2) close to the sides. As shown in Figure 1.1, the section of the second rack (8) located on the first face (1) is horizontal and is at a greater distance from the lower base (4.2) than the rest of its sections.

Likewise, the backpack has a fabric (9) with an upper end and a lower end fixed to the inner surface of the backpack, above and below the second zipper (8) respectively.

In this way, as can be seen in Figures 1.1 and 1.2, the fabric (9) has a rest position, which is shown in Figure 1.1, when the second zipper (8) is closed. closed and the fabric (9) is folded on itself inside the backpack and, a use position, shown in Figure 1.2, when the second zipper (8) is open and the fabric (9) is extended as an extension of the first face (1), and such that the lower base (4.2) of the backpack is located in a vertical position as an extension of the second face (2).

In this preferred embodiment of the invention, the backpack comprises folds (10) of the fabric (9) in the area of its lower end located at the junction between the first face (1) and each of the two sides ( 3). These folds (10) are important so that the fabric (9) does not deform in its extended position.

Likewise, as shown in Figures 2.1 and 2.2, in this preferred embodiment of the invention, the backpack comprises a flexible laminar body (11) fixed to the sides of the second face (2), inside the backpack, so that they form a second compartment (12) whose upper and lower ends (12.1, 12.2) are open.

In this way, the electronic equipment (13) can be inserted into this second compartment (12), and having the upper and lower ends (12.1, 12.2) open, it will protrude at least through the lower end (12.2), but it remains perfectly protected against possible movements inside the backpack.

In the case reflected in Figure 2.1, with a smaller equipment (13), it is not necessary to expand the backpack and the equipment (13) is held inside the second compartment (12), while, in the case represented in Figure 2.2, with equipment (13) of a larger size, it is necessary to expand the backpack and as shown in said figure, the equipment (13) will be able to go deeper, thanks on the one hand to the fabric (9 ) that allows the extension of the backpack and on the other, thanks to the fact that the lower end (12.2) of this second compartment (12) is open to allow the passage of the equipment (13).

In addition, in this case it comprises two elastic bands (14) fixed to the lower base (4.2) of the backpack, on its inner surface, with a first end (14.1) fixed to the lateral contour of the same and a second end (14.2) fixed to the joint contour with the first face (1), such that in the position of use both bands (14) are parallel to a vertical plane. These bands (14) are very suitable for fastening the corners of the equipment (13) located in the second compartment (12).

According to another aspect, this backpack has padding (15) made of breathable mesh fabric on the outer surface of the second face (2) and on the inner surface of the straps (7) in the appropriate area for support on the shoulders and user's chest.

Likewise, it comprises an additional padding (not shown in the Figures) by means of expanded polyethylene foam on the inner surface of the second face (2) and on the area of the sides (3) located below the second zipper. (8) and between it and the first rack (6). The inner surface of the first face (1) located in the area below the second zipper (8) also has additional padding.

As shown in Figure 3, in this embodiment of the invention, this backpack comprises a strap (16) fixed at both ends to the sides of the second face (2) preferably by sewing and adapted so that, for example, the extensible handle of a travel suitcase can be inserted between said strap (16) and the second face (2) leaving the backpack positioned and fastened to the suitcase in a simple way.

In this preferred embodiment, the surface of the strap (16) facing the second face (2) of the backpack has fixing means (16.1) to said second face (2) formed by a hook and loop fastener located in the central area of the tape.

In addition, in this preferred embodiment, the backpack comprises a belt (17) suitable for adjusting to the user's chest with respective halves fixed to one of the straps (7) respectively and closure means (18) at its free end, such and as can be seen in Figure 3.

This belt (17) allows to ensure a correct fastening of the backpack so that it does not sway due to the movement produced by the user walking, or in case another means of transport is used, such as a bicycle, motorcycle, electric scooter ...

Likewise, in this embodiment, the backpack comprises a handle (19) for joining both straps (7) at their upper end. This handle (19) is internally reinforced with polyethylene foam (FOAM) and the ends of the handle are sewn into respective openings in each strap (7) of the backpack, and reinforced with loops.

The straps (7) for their part comprise two reinforcing loops (not shown in the Figures), each one in its connection area with the upper part of the backpack. These reinforcement loops are zigzag loops and are separated from each other so that they are two independent reinforcement points that provide greater reinforcement to the ends of the joining area, than if it were a continuous loop.

Claims (1)

1- Expandable backpack, comprising a first face (1), a second opposite face (2) suitable for resting on the user's back, two sides (3) and two upper and lower bases (4.1, 4.2), such that between all of them define a first containment compartment (5), with a first upper zipper (6) for access to it and two straps (7) for coupling to the user's shoulders, characterized in that it comprises - a second zipper (8) located in the lower half of the backpack, which runs along the first face (1), both sides (3) and respective portions (2.1) of the second face (2) close to the sides (3), where the section of the second rack (8) located on the first face (1) is horizontal and is at a greater distance from the lower base (4.2) than the rest of its sections, and; - a fabric (9) having an upper end and a lower end fixed to the inner surface of the backpack, above and below the second zipper (8) respectively; where the fabric (9) has a rest position when the second zipper (8) is closed and the fabric (9) is folded on itself inside the backpack and, a use position when the second zipper (8) is open and the fabric (9) is extended as an extension of the first face (1), and such that the lower base (4.2) of the backpack is located in a vertical position as an extension of the second face (2) . 2- Expandable backpack, according to claim 1, comprising some folds (10) of the fabric (9) in the area of the lower end thereof located at the junction between the first face (1) and each of the two sides (3 ). 3- Expandable backpack, according to any of the preceding claims, comprising a flexible laminar body (11) fixed to the sides of the second face (2), inside the backpack, so that they form a second compartment (12) whose upper and lower ends (12.1, 12.2) are open. 4- Expandable backpack, according to claim 3, comprising two elastic bands (14) fixed to the lower base (4.2) of the backpack, on its inner surface, with a first end (14.1) fixed to the lateral contour of the same and a second end (14.2) fixed to the junction contour with the first face (1), such that in the position of use both bands (14) are parallel to a vertical plane. 5- Expandable backpack, according to any of the preceding claims, comprising padding (15) of breathable mesh fabric on the outer surface of the second face (2) and on the inner surface of the straps (7) in the appropriate area for shoulder support. 6- Expandable backpack, according to any of the preceding claims, comprising additional padding by means of expanded polyethylene foam on the inner surface of the second face (2), in the area of the sides (3) located below the second rack (8), between it and the first rack (6), as well as on the inner surface of the first face (1) located in the area below the second rack (8). 7- Expandable backpack, according to any of the preceding claims, comprising a strap (16) fixed at both ends to the sides of the second face (2) and also comprising fixing means (16.1) to the second face (2) on the surface of the tape (16) facing said second face (2). 8- Expandable backpack, according to claim 7, where the fixing means (16.1) are formed by a hook and loop closure. 9- Expandable backpack, according to any of the preceding claims, comprising a belt (17) suitable for adjusting to the user's chest with respective halves fixed to one of the straps (7) respectively and closure means (18) at its free end . 10- Expandable backpack, according to any of the preceding claims, comprising a handle (19) for joining both straps (7) at their upper end.