school bag

Abstract

To provide a school bag in which the gusset width of a sub-storage compartment can be adjusted in a simpler way for a child. [Solution] The school bag 1 comprises a school bag body 2 having at least a main storage chamber 4 for storing educational materials and a secondary storage chamber 5 that can be expanded by unfolding a small gusset piece 10 on the side, and a cover plate 3 that covers the upper part of the school bag body in an openable and closable manner. The small gusset piece has a fold part 13 that allows the gusset width to expand or contract depending on the amount of items stored in the secondary storage chamber, one end of the small gusset piece is connected to a front plate part 7 of the main storage chamber, and a maintenance mechanism 20 is provided on the small gusset piece to maintain the gusset width of the secondary storage chamber at the width before it was expanded.

Description

[Technical field]

[0001] The present invention relates to a school bag that allows the gusset width of the secondary storage compartment to be adjusted more easily. [Background technology]

[0002] Traditionally, school bags are formed by connecting a main storage compartment for storing textbooks, notebooks, etc., a secondary storage compartment for storing various teaching materials, and a front pocket for storing small items in the front-rear direction. In addition, so-called front fastening belts are attached to the gusset parts of the main storage compartment and the secondary storage compartment of the school bag to prevent the school bag from losing its shape. As this front fastening belt, a buckle-type connector that is attached to the front side of the secondary storage compartment from the left and right gusset parts and that makes the left and right belts located at the front detachable and adjustable is known (Patent Documents 1 and 2).

[0003] On the other hand, today's school bags have become larger in the main compartment to accommodate A4-sized files and notebooks. In addition, school bags can store textbooks, notebooks, clear files, pencil cases, math materials, electronic devices, gym clothes, lunch bags, and water bottles. As a result, the items stored in the secondary compartment as well as the main compartment have become more diverse, and it has become necessary to store not only textbooks, gym clothes bags, and lunch bags, but also electronic devices.

[0004] Under these circumstances, the secondary storage compartment was required to have a function that allows the width of the gusset to be adjusted according to the amount of teaching materials to be stored. However, the conventional front fastening belt had the problem that the adjustment operation was complicated, especially for children in the lower grades. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3073139 [Patent Document 2] JP 2016-209439 A Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, an object of the present invention is to provide a school bag that allows children to adjust the gusset width of the secondary storage compartment in a way that is easier for them to do so. [Means for solving the problem]

[0007] (1) A school bag according to one embodiment for achieving the above object includes: A backpack comprising a backpack body having at least a main storage chamber for storing educational materials and a sub-storage chamber that can be expanded by unfolding a small gusset piece on a side, and a cover plate that can open and close and cover an upper part of the backpack body, The small gusset piece has a fold portion that allows the gusset width to be expanded or contracted depending on the amount of items stored in the secondary storage chamber, One end of the small gusset piece is connected to the front panel of the main storage chamber, A maintaining mechanism for maintaining the gusset width of the sub-storage chamber at the width before it was widened is provided on the small gusset piece. (2) In a school bag according to another embodiment, preferably, the small gusset piece includes a gusset portion having one end connected to the front plate portion of the main storage chamber, and an expandable portion having one end joined to the gusset portion and the other end connected to the front plate portion of the sub storage chamber, The gusset portion and the stretchable portion are joined at the fold portion, A maintaining mechanism for maintaining the gusset width of the sub-storage chamber at the width before it was widened may be provided to the gusset portion and / or the expandable portion. (3) In the school bag according to another embodiment, preferably, the fold portion includes a first fold portion and a second fold portion, The stretchable portion may include a first stretchable portion joined to the gusset portion at the first fold portion, and a second stretchable portion joined to the first stretchable portion at a second fold portion of the fold portion that protrudes into the interior of the auxiliary storage chamber. (4) In the school bag according to another embodiment, the first stretchable portion and the second stretchable portion may preferably be made of different materials. (5) In the school bag according to another embodiment, the maintenance mechanism may preferably include a binder provided along the height direction so as to cover at least the tip of the second fold portion. (6) In the school bag according to another embodiment, the maintaining mechanism may preferably include a hook-and-loop fastener that enables opposing surfaces forming the fold portion to be attached and detached from each other. (7) In the school bag according to another embodiment, the maintaining mechanism may preferably include a magnet for enabling opposing surfaces forming the fold portion to be detached from each other. (8) In a school bag according to another embodiment, the retention mechanism may preferably include an elastic member joined at least to the connecting portion between the front panel portion of the main storage chamber and the small gusset piece. Effect of the Invention

[0008] According to the present invention, it is possible to provide a school bag that allows the gusset width of the secondary storage compartment to be adjusted in a way that is easier for children to adjust. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 shows a perspective photograph of a school bag according to one embodiment. [Diagram 2] Figure 2 shows side photographs of a school bag equipped with a binder and hook-and-loop fastener as a retention mechanism, showing the state before and after the secondary storage compartment was widened. [Diagram 3] Figure 3 shows a plan view of the small gusset piece after the secondary storage chamber has been widened. [Figure 4] Figure 4 shows a partially enlarged photograph of the small gusset piece of a school bag equipped with a magnet as a retention mechanism after it has been widened. [Diagram 5] FIG. 5 is a partially enlarged photograph showing the state of the small gusset piece of a school bag after it has been widened, the school bag having a binder and an elastic member as a retention mechanism. [Figure 6]Figure 6 shows a front photograph (6A) of the area around the secondary storage compartment of a school bag according to another embodiment that has an elastic member as a retention mechanism, an enlarged oblique photograph (6B) of the area around the small gusset piece after it has been widened, and an enlarged plan photograph (6C). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Next, the embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below does not limit the invention related to the scope of the utility model registration claims, and all of the elements and combinations thereof described in the embodiment are not necessarily essential to the solution of the present invention.

[0011] Fig. 1 shows a perspective view of a school bag according to one embodiment. Fig. 2 shows side views of the school bag equipped with a binder and a hook-and-loop fastener as a retention mechanism before and after the secondary storage compartment is widened. Fig. 3 shows a plan view of the small gusset piece after the secondary storage compartment is widened.

[0012] The school bag 1 according to this embodiment comprises a school bag body 2 having at least a main storage compartment 4 for storing educational materials and a secondary storage compartment 5 which can be expanded by unfolding small gusset pieces 10 on the sides, and a cover plate 3 which opens and closes and covers the upper part of the school bag body 2. Furthermore, the school bag 1 may also have a front pocket 6 for storing small items, connected to the secondary storage compartment 5. The school bag 1 may also have a pair of shoulder straps, one end of which is attached to the upper center of the back panel and the other end of which is connected to the bottom surface of the school bag 1.

[0013] The auxiliary storage chamber 5 will be described in more detail below. The auxiliary storage chamber 5 has small gusset pieces 10 on its sides, and the gusset width (front-to-back width) can be adjusted by expanding and contracting the small gusset pieces 10. The small gusset pieces 10 have folds 13 that allow the gusset width to expand and contract depending on the amount of items stored in the auxiliary storage chamber 5. One end of the small gusset piece 10 is connected to the front panel 7 of the main storage chamber 4. When no teaching materials or the like are stored in the auxiliary storage chamber 5, the small gusset pieces 10 are preferably folded in a zigzag shape in a plan view.

[0014] The small gusset piece 10 expands and contracts when educational materials or the like are stored in the auxiliary storage chamber 5 and the educational materials or the like push the front plate portion 8 side inside the auxiliary storage chamber 5. As a result, the gusset width of the auxiliary storage chamber 5 is expanded. There are no particular limitations on the gusset width before and after expansion. For example, the auxiliary storage chamber 5 may be formed so that the gusset width is 25 to 35 mm before expansion and 75 to 85 mm after expansion. The expansion of the auxiliary storage chamber 5 can be achieved by pushing out the front plate portion 8 to extend the expansion portion 12. The pushing out of the front plate portion 8 can be achieved by storing a B5-sized textbook, notebook, or the like.

[0015] This widening makes it possible to store teaching materials such as B5-sized textbooks and notebooks, which are often stored in the main storage room 4, in the secondary storage room 5. As a result, it becomes easier to secure space in the main storage room 4. By storing bulky items such as gym bags, lunch bags, and even water bottles in this space, it is possible to eliminate the need for gym bags and lunch bags that are hung in the outer width direction of the school bag 1. This makes it possible to prevent traffic accidents and unexpected injuries when going to and from school.

[0016] The small gusset piece 10 is provided with a maintaining mechanism 20 for maintaining the gusset width of the secondary storage chamber 5 at the width before it was widened. By providing the maintaining mechanism 20 on the small gusset piece 10 of the secondary storage chamber 5 rather than on the side surface of the main storage chamber 4, there is no need to provide a front fastening belt on the outside of the school bag body 2 from the side surface of the main storage chamber 4 to the front plate portion 8 of the secondary storage chamber 5. This makes it possible for even children to easily adjust the gusset width of the secondary storage chamber 5.

[0017] The small gusset piece 10 may preferably include a gusset portion 11 having one end connected to the front plate portion 7 of the main storage chamber 4, and an expandable portion 12 having one end joined to the gusset portion 11 and the other end connected to the front plate portion 8 of the auxiliary storage chamber 5. The gusset portion 11 and the expandable portion 12 may be joined together with a fold portion 13 as a boundary, or preferably may be sewn together with the fold portion 13 as a boundary. In this case, the maintaining mechanism 20 may be provided in the gusset portion 11 and / or the expandable portion 12.

[0018] The fold portion 13 of the small gusset piece 10 may preferably include a first fold portion 16 and a second fold portion 17. In this case, the stretchable portion 12 may include a first stretchable portion 14 joined to the gusset portion 11 at the first fold portion 16, and a second stretchable portion 15 joined to the first stretchable portion 14 at the second fold portion 17. The first fold portion 14 is the fold portion 13 on the side of the fold portion 13 that is located outside the auxiliary storage chamber 5, and the second fold portion 17 is the fold portion 13 on the side that forms a protrusion that protrudes into the auxiliary storage chamber 5.

[0019] The maintaining mechanism 20 can be of various types as long as it can easily adjust the gusset width. For example, in the school bag 1 shown in Fig. 2, a hook-and-loop fastener 22 that enables the opposing surfaces forming the fold 13 to be attached and detached from each other is used as the maintaining mechanism 20. Also, while the hook-and-loop fastener 22 is provided on approximately the upper half of the joining surfaces in Fig. 2, the present invention is not limited to this, and may be provided on the entire joining surfaces, or on approximately the center or approximately the lower half of the joining surfaces. The maintaining mechanism 20 may further include a binder 21 and / or an elastic member 24, which will be described later.

[0020] The hook-and-loop fastener 22 provided as the maintaining mechanism 20 is not particularly limited as long as the opposing surfaces having the first and second stretchable portions 14 and 15 forming the second fold 17 can be attached and detached from each other, and either a male surface or a female surface can be used as desired. By including the hook-and-loop fastener 22 in the maintaining mechanism 20, when the expansion of the gusset width is stopped, the opposing surfaces of the fold 13 can be pulled together by simply matching the hook-and-loop fasteners 22 together, and the gusset width can be easily restored to the width before the expansion. This makes it easy for even children to adjust the gusset width of the secondary storage chamber 5.

[0021] The material of the gusset portion 11 and the first stretchable portion 14 may be different from the material of the second stretchable portion 15. The material of the gusset portion 11 and the first stretchable portion 14 and the material of the second stretchable portion 15 are not particularly limited, and various known materials can be used, and they may all be the same or all different. For example, the material of the gusset portion 11 and the first stretchable portion 14 may be leather from the viewpoint of ensuring design, and the material of the second stretchable portion 15 may be polyamide fiber from the viewpoint of ensuring stretchability and breathability.

[0022] The maintaining mechanism 20 may include a binder 21 provided along the height direction so as to cover at least the tip of the second fold portion 17 of the fold portion 13 that protrudes into the sub-storage chamber 5. The binder 21 is preferably provided along the height direction of the sub-storage chamber 5, i.e., along the inner side surface, and more preferably is provided further to the inner bottom surface of the sub-storage chamber 5 and is connected to the binders 21 provided on the left and right inner side surfaces. The binder 21 is preferably sewn to cover the tip of the second fold portion 17, i.e., the protruding portion side protruding into the sub-storage chamber 5, and to gather the first and second stretchable portions 14 and 15 that constitute the second fold portion 17, and more preferably is sewn in such a way that at least the opening side of the binder 21 is sandwiched from the outside of at least the first and second stretchable portions 14 and 15. The material of the binder 21 may be the same as or different from the material that constitutes the small gusset piece 10.

[0023] As described above, by providing the binder 21 at the second fold 17, when the pressing force on the stretched stretchable portions (the first stretchable portion 14 and the second stretchable portion 15) is removed, a restoring force is generated in the fold 13 of the small gusset piece 10 to return it to its original shape. The binder 21 as the maintaining mechanism 20 can be used in combination with any other maintaining mechanism 20. Furthermore, when the binder 21 is provided as the maintaining mechanism 20, the restoring force can be used to return the small gusset piece 10 to its original shape even if no other maintaining mechanism 20 is provided. A school bag 1 that does not have a maintaining mechanism 20 other than the binder 21 has an appearance similar to a traditional school bag, giving consumers a simple impression.

[0024] FIG. 4 is a partially enlarged photograph showing the state of the small gusset piece after the width of the school bag having a magnet as a maintaining mechanism is widened. The maintaining mechanism 20 may include a magnet 23 for making the opposing surfaces forming the fold 13 detachable from each other. In FIG. 4, the magnet 23 is embedded inside the outer material of the small gusset piece 10. However, the magnet 23 is not limited to the above position as long as it does not interfere with the adjustment of the gusset width, and may be directly attached to the outer surface of the small gusset piece 10, or may be directly attached to a location corresponding to the back side of the fold 13 on the inner wall of the sub-storage chamber 5. In FIG. 4, the magnet 23 is provided on each of the upper parts of the joining surfaces, but is not limited thereto, and may be provided, for example, in the center or lower parts of the joining surfaces, or a plurality of magnets may be provided on the entire joining surfaces. Even when the maintaining mechanism 20 includes the magnet 23, it may further include the binder 21 described above.

[0025] By using the magnets 23 as the maintaining mechanism 20, when the expansion of the gusset width is stopped, the opposing faces of the folds 13 are attracted to each other by the magnetic force of the magnets 23, and the gusset width can be easily restored to the width before the expansion, so that even children can easily adjust the gusset width.

[0026] Fig. 5 shows a partially enlarged photograph of the state of the small gusset piece after the width of a school bag equipped with a binder and an elastic member as a retention mechanism. Fig. 6 shows a front photograph (6A) of the periphery of the secondary storage chamber, an enlarged oblique photograph (6B) of the periphery of the small gusset piece after the width of the school bag according to another embodiment equipped with an elastic member as a retention mechanism, and an enlarged plan photograph (6C).

[0027] The retention mechanism 20 may include an elastic member 24 joined at least to the connecting portion 18 between the front plate portion 7 of the main storage chamber 4 and the small gusset piece 10. The elastic member 24 is preferably rubber. As long as one end of the elastic member 24 is joined to the connecting portion 18, the connecting portion of the other end does not matter. For example, in FIG. 5, the other end of the elastic member 24 is joined to the surface of the connecting portion between the second stretchable portion 15 and the front plate portion 8 of the auxiliary storage chamber 5 on the second stretchable portion 15 side.

[0028] By forming the maintaining mechanism 20 with the elastic member 24 of the above embodiment, when the teaching material or the like is placed in the secondary storage chamber 5, the elastic member 24 expands to expand the gusset width, and when the teaching material or the like is removed from the secondary storage chamber 5, the restoring force of the elastic member 24 automatically returns the gusset width of the secondary storage chamber 5 to the gusset width before it was expanded. Therefore, even children can easily adjust the gusset width.

[0029] 6, the other end of the elastic member 24 passes through a hole provided in the side surface of the first stretchable section 14 and is fixed from the outside to the front panel 8 of the auxiliary storage chamber 5. In this case, the outside of the elastic member 24 may be covered with a covering member 30 similar to the outer material of the school bag 1, or the fixing point may be fastened with a pin or the like. By using the covering member 30 or pin, the school bag 1 can easily adjust the gusset width while maintaining a design similar to that of conventional traditional school bags.

[0030] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0031] DESCRIPTION OF SYMBOLS 1...School bag, 2...School bag body, 3...Cover plate, 4...Main storage chamber, 5...Secondary storage chamber, 6...Front pocket, 7, 8...Front plate, 10...Small gusset piece, 11...Gusset portion, 12...Stretchable portion, 13...Folded portion, 14...First stretchable portion, 15...Second stretchable portion, 16...First foldable portion, 17...Second foldable portion, 18...Connection point, 20...Retention mechanism, 21...Binder, 22...Hook-and-loop fastener, 23...Magnet, 24...Elastic member, 30...Covering member.

Claims

1. A backpack comprising a backpack body having at least a main storage chamber for storing educational materials and a sub-storage chamber that can be expanded by unfolding a small gusset piece on a side, and a cover plate that can open and close and cover an upper part of the backpack body, The small gusset piece has a fold portion that allows the gusset width to be expanded or contracted depending on the amount of items stored in the secondary storage chamber, One end of the small gusset piece is connected to the front panel of the main storage chamber, The school bag has a maintenance mechanism provided on the small gusset piece for maintaining the gusset width of the secondary storage chamber at the width before it was widened.

2. The small gusset piece includes a gusset portion having one end connected to the front plate portion of the main storage chamber, and an expandable portion having one end joined to the gusset portion and the other end connected to the front plate portion of the sub storage chamber, The gusset portion and the stretchable portion are joined at the fold portion, 2. The school bag according to claim 1, wherein a maintaining mechanism for maintaining the gusset width of the secondary storage chamber at the width before the width is expanded is provided at the gusset portion and / or the stretchable portion.

3. The fold portion includes a first fold portion and a second fold portion, The school bag as described in claim 2, wherein the stretchable portion includes a first stretchable portion joined to the gusset portion at the first fold portion, and a second stretchable portion joined to the first stretchable portion at a second fold portion of the fold portion that protrudes into the interior of the secondary storage chamber.

4. The school bag according to claim 3, wherein the first stretchable portion and the second stretchable portion are made of different materials.

5. The school bag according to claim 3 , wherein the maintaining mechanism includes a binder provided along the height direction so as to cover at least the tip of the second fold portion.

6. The school bag according to claim 1 , wherein the maintaining mechanism includes a hook-and-loop fastener that enables opposing surfaces forming the fold portion to be detachably attached to each other.

7. The school bag according to claim 1 , wherein the maintaining mechanism includes a magnet for enabling the opposing surfaces forming the fold portion to be detached from each other.

8. 6. The school bag according to claim 1, wherein the retention mechanism includes an elastic member joined at least to a connecting portion between the front panel portion of the main storage chamber and the small gusset piece.

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