JP2024055859A - school bag - Google Patents

Abstract

[Problem] To provide a new school bag to replace traditional school bags. [Solution] School bag 1 comprises school bag main body 10 and a flap 20 that covers the top and front of school bag main body 10. School bag main body 10 has a box-shaped main body 11, an opening 11g provided in box-shaped main body 11 for inserting and removing school supplies, and a slide fastener 12 for opening and closing opening 11g, and flap 20 has a cover part 21 that covers the top and front of the flap, which has an external shape that presents a school bag-like design and is detachable from box-shaped main body 11. [Selected Figure] Figure 4

Description

Application for exception to loss of novelty has been filed

This disclosure relates to a school bag.

Traditionally, many elementary school students in Japan have used school backpacks as their school bag. These backpacks have a basic structure with a main body and a lid (cover). The main body is made up of five sides - the front, back, left side, right side, and bottom - and is formed like a box with one side open, with an opening at the top, and a shoulder strap is attached to the back. The lid is formed to cover the opening and front of the main body, and the flap at the bottom of the lid is turned over to the bottom of the main body and secured to the main body with a lock.

The traditional school bags that have been used by elementary school students for many years have been quite unchanged in terms of functionality and design. School bags are designed to hold school supplies such as textbooks, notebooks, and writing implements. Therefore, the basic specifications for school bags are that they have a large storage area in the main body for storing school supplies.

The purpose of this disclosure is to provide a new school bag that can replace traditional school bags.

One aspect of the present disclosure is a school bag comprising a school bag body, shoulder straps attached to the back of the school bag body, and flaps covering the top and front of the school bag body, the school bag body having a box-shaped body, an opening in the box-shaped body for inserting and removing school supplies, and a zipper for opening and closing the opening, the flap has a covering portion covering the top and front of the flap that has an external shape with a school bag-like design and is detachable from the box-shaped body.

The school bag further includes a connecting portion that connects the flap to the school bag body, and the connecting portion may include a connector that detachably connects the upper portion of the back surface of the box-shaped body to the upper portion of the flap. The connector may include a slide fastener or a button.

Furthermore, the school bag has a connecting part that connects the flap to the school bag body, and the connecting part may include a fixing device for the school bag body provided on either the front of the school bag body or the back of the flap, and a fixing device for the flap provided on the other of the two.

The main body fastener and the flap fastener can be configured to release the fixed state of the flap, in which the main body fastener and the flap fastener are fixed, by displacing the flap downward and shifting the flap fastener downward relative to the main body fastener.

The body fixing device and the flap fixing device can be configured to have a variable fixing height portion that changes the height position at which the flap is fixed to the backpack body.

The variable fixed height parts are provided as fixtures for the main body, and are upper and lower fixtures for the main body that are positioned apart in the height direction of the backpack body, and the height position of the flap can be changed by changing the object to be fixed to the flap fixture between the upper fixture for the main body and the lower fixture for the main body.

The variable height fixing parts are provided as flap fixing devices, and are upper and lower flap fixing devices that are positioned apart in the height direction of the backpack body, and the height position of the flap can be changed by changing the fixing target for the main body fixing device between the upper flap fixing device and the lower flap fixing device.

The school bag also has an expandable variable section that changes the length or position at which the flap covers the school bag body.

The stretchable section can be configured as a main body stretchable member provided on the backpack body.

The stretchable variable section can be configured as a flap-side stretchable member provided on the upper portion of the flap.

The stretchable section can be configured as an extension member having a first connection section that can be connected to the backpack body, a second connection section that can be connected to the flap, and an intermediate section between the first and second connection sections.

The stretchable section can be constructed as a stretchable fabric, a bellows-like gusset section, or a folding section. These allow the length and position of the flap to be easily adjusted with a simple structure.

The school bag further includes a partition member, which is attached to the storage chamber inside the box-shaped main body and may include a partition plate capable of covering the top surface of a lunch container placed on the bottom surface of the storage chamber. The partition plate has a partition plate attachment portion that is provided on the partition plate and can be fixed to the inner surface of the box-shaped main body.

The partition plate attachment portion can be configured so that its fixed position can be changed in the height direction of the backpack body.

The partition member can be configured to have one or more legs extending from the partition plate toward the bottom surface of the storage chamber.

The partition member can be configured to have one or more pockets. The pockets can be provided in a position opposite the lunch container.

The legs have a length that allows them to come into contact with the bottom surface of the storage chamber, and the partition member can be configured to form a small storage chamber surrounded by the partition plate and the legs.

Furthermore, the school bag can be configured to include a belt that is provided in a storage chamber inside the box-shaped main body and that wraps around and holds a lunch container placed on the bottom surface of the storage chamber.

The belt can be configured to have an upper belt that extends from the top side of the lunch container placed on the bottom surface to the side of the lunch container toward the front side of the school bag body, and a lower belt that extends from the bottom side of the storage chamber to the side of the lunch container located on the front side of the school bag body.

The flap is shaped to cover the front of the backpack body as well as the left and right sides of the backpack body.

This disclosure makes it possible to provide a new school bag that can replace traditional school bags.

In order to clearly explain one aspect of the present disclosure based on an embodiment illustrating the present disclosure, drawings necessary for the explanation will be briefly described. The drawings are merely for illustrating the embodiment and are not intended to limit the scope of the embodiment of the present disclosure. A person skilled in the art can obtain drawings of other related embodiments based on the drawings of the present disclosure without using any special inventive ability.

1 is a perspective view showing an exterior of a school bag according to one embodiment of the present disclosure, including a front, right side, and top view. FIG. FIG. 2 is an external perspective view corresponding to FIG. 1, showing the state in which the flap of the school bag in FIG. 1 is open. FIG. 3 is a right side view of FIG. 2 . A rear view of the school bag showing the process of attaching and removing the flap. FIG. 4 is an explanatory diagram showing the fixed state of the lunch container inside the school bag body. 1A to 1C are external perspective views showing a plurality of embodiments of a partition member and the like. FIG. 4 is an explanatory diagram showing the arrangement of items stored inside the backpack body. 8A to 8C are external perspective views showing a plurality of embodiments of the partition member shown in FIG. 7 . FIG. 13 is an explanatory diagram showing a fixing form of the main body fixing device and the flap fixing device. 11 is an explanatory diagram showing an embodiment of an expandable and contractible portion provided on a flap. FIG. 11 is an explanatory diagram showing an embodiment of an expandable and contractible portion provided on a flap. FIG. FIG. 4 is an explanatory diagram showing an embodiment of an expandable and contractible portion provided on the backpack body. FIG. 4 is an explanatory diagram showing an embodiment of an expandable and contractible portion provided on the backpack body. FIG. 4 is an explanatory diagram showing an embodiment of an expandable and contractible portion provided on the backpack body. FIG. 4 is an explanatory diagram showing an embodiment of an expandable and contractible portion provided on the backpack body. FIG. 13 is an external perspective view showing a modified example of the flap.

Below, one aspect exemplified in this disclosure will be described based on various embodiments with reference to the drawings. The embodiments shown below do not limit the description of the claims, and all of the configurations described in the present embodiment are not necessarily essential as the solution exemplified in this disclosure.

All embodiments and optional embodiments included in this disclosure may be combined with each other to form new embodiments. All technical features and optional technical features included in this disclosure may be combined with each other to form new technical features.

As used in this disclosure, the term "or" is used as an inclusive term. For example, "A or B" means "A, B, or both A and B." "A," "B," and "both A and B" each satisfy "A or B."

In the description of this disclosure, unless otherwise clearly defined or limited, terms such as "attached," "coupled," "connected," and "fixed" are understood in a broad sense. For example, in the case of "connection," fixed connection, removable connection, and integral connection are all included in the term "connection." In addition, direct connection and indirect connection through an intermediate object are also included in the term "connection." Those skilled in the art will understand the specific meaning of the above terms in this disclosure depending on the specific situation. Other terms are also understood in the same broad sense as "connection."

When "first" and "second" are used in this specification and claims, they are used to distinguish between different components, and are not used to indicate a specific order or superiority. Each part shown in the drawings may be labeled "first", "second", etc. for distinction. In addition, elements that have a configuration common to each embodiment and have the same effect are assigned the same reference numerals and duplicate explanations are omitted.

In the description of the embodiments of the present disclosure, the directions or positional relationships expressed by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, and terms including these terms, are based on the drawings and are merely intended to conveniently and simply describe the embodiments. Therefore, unless clearly defined or limited, it should be understood that it does not expressly or imply that a particular structural element or its use necessarily has a particular direction or is configured in a particular direction, and does not limit the scope of the claims and the embodiments.

When the terms "about," "approximately," "nearly," and "substantially" are used in this specification and claims, the numerical values and structural elements described by these terms are understood to include the numerical value and the numerical values before and after that numerical value, and to include the structural element and those that can be said to be the same as the structural element. For example, when describing "about 3," "3" and the numerical values following it can be included in "about 3" as long as the technical features and technical significance asserted in this disclosure are not different. Furthermore, when describing "B that is substantially identical to A," in addition to the case where B is completely identical to A, structural elements that have differences that are not completely identical can also be included in the scope of "substantially" as long as the technical features and technical significance asserted in this disclosure are common.

overall structure

Figure 1 includes the front, right side, and plane of school bag 1. Here, the direction in which the front (front, front surface) and back (rear, rear surface) face each other is the "depth direction" or "front-to-back direction", and the distance between the front and back (external or internal dimension) is the "depth" of school bag 1. The direction in which the right side and left side face each other is the "left-to-right direction" or "width direction" of school bag 1, and the distance between the right side and left side (external or internal dimension) is the "width" of school bag 1. The direction in which the plane (top, upper surface) and bottom surface (bottom, lower surface) face each other is the "height direction" or "up-down direction", and the distance between the plane and bottom surface (external or internal dimension) is the "height" of school bag 1.

The school bag 1 has a basic shape resembling a vertically long box. A front curved portion 1a is formed on the front upper edge of the school bag 1, with a curved surface extending in the front-to-back and up-down directions. The school bag 1 is formed so that, overall, the dimensions decrease in order of height, width, and depth. By including the aforementioned front curved portion 1a in its basic shape, school bag 1 gives the viewer a design impression of being a school bag.

The school bag 1 has a school bag body 10 and a flap 20.

Description of the backpack body 10

The school bag body 10 is a backpack. The school bag body 10 that can be used as a backpack has a box-shaped body 11. The term "box-shaped" in reference to the box-shaped body 11 means that the shape has a main storage compartment (storage compartment 11h described below) inside the school bag body 10 and an opening (opening 11g described below) that can be opened and closed to expose the main storage compartment to the outside. As long as the box-shaped body 11 is "box-shaped," there are no limitations on the shape and number of the openings, the position of the openings in the box-shaped body 11, whether the opening and closing parts that open and close the openings can be attached and detached from the box-shaped body 11, the shape and number of the openings, or the functions added to the opening and closing parts.

The box-shaped main body 11 includes a front surface 11a, a top surface 11b, a right side surface 11c, a left side surface 11d, a back surface 11e, and a bottom surface 11f.

The front part 11a functions as an "opening/closing part" or "lid" that can be opened and closed freely to expose the inside of the school bag main body 10 and the box-shaped main body 11 to the outside. The front part 11a can be connected to and separated from the top part 11b, right side part 11c, and left side part 11d by the slide fastener 12, and is connected to the bottom part 11f as an integral part that cannot be separated. In other words, the front part 11a functions as an "opening/closing part" or "lid" that opens and closes the opening 11g of the box-shaped main body 11 that is formed according to the arrangement of the slide fastener 12. The opening 11g is connected to a storage chamber 11h formed inside the box-shaped main body 11, and serves as a "storage opening" for putting in and taking out school supplies, lunch containers, etc. The opening 11g has an inverted U-shape that extends upward from the lower right and left ends of the front part 11g along the front edges of the right side part 11c and left side part 11d, respectively, and continues along the front edge of the top part 11b from its right and left ends to the center of the front, forming a "storage opening" that spans the three dimensions of width, height, and depth.

In this specification and claims, the term "slide fastener" includes a fastening product in which a pair of elements cannot be separated in an open state, and an opening product in which a pair of elements can be separated in an open state. The fastening product includes a pair of tapes, a pair of elements attached to each tape, a pair of top stops, a pair of bottom stops, a pair of elements, and a slider, and the opening product includes an opening device instead of a pair of bottom stops.

The outer edge of the front part 11a is formed along the slide fastener 12. Specifically, the front part 11a has an upper curved part 11a1 whose upper end side curves toward the rear part 11e. As shown in FIG. 2, the upper curved part 11a1 curves toward the rear part 11e from a position about 1/3 of the way up the height of the school bag body 10. Therefore, when the slide fastener 12 is opened in line with the upper curved part 11a1, the top and front of the school bag body 10 can be opened widely and continuously, and school supplies can be inserted and removed from the top or front of the box-shaped body 11. The slide fastener 12 can be kept closed below the upper curved part 11a1 to prevent the stored school supplies from falling forward.

The top surface 11b is formed so that its length from the back surface 11e in the front-to-rear direction is shorter than that of the bottom surface 11f. Therefore, the front surface 11a forms the upper curved portion 11a1 described above.

The right side surface portion 11c and the left side surface portion 11d are formed with substantially the same surface shape, and are all directly or indirectly continuous with the front surface portion 11a, the top surface portion 11b, the back surface portion 11e, and the bottom surface portion 11f. The right side surface portion 11c and the left side surface portion 11d can be connected or separated from the front surface portion 11a via a slide fastener 12. When the slide fastener 12 is open, the front side edges (front edges) of the right side surface portion 11c and the left side surface portion 11d form the edge (opening edge) of the opening 11g.

The rear portion 11e is located opposite the front portion 11a and is formed in a rectangular shape. A shoulder belt 30 is provided on the rear portion 11e as shown in Figures 1 to 4.

The bottom surface 11f is rectangular and is connected to the front surface 11a, the right side surface 11c, the left side surface 11d, and the back surface 11e.

Expandable function by gusset section 11i:
The backpack body 10 (box-shaped body 11) has a gusset portion 11i that allows the volume of the storage chamber 11h to be expanded. The gusset portion 11i is formed in a ring shape that spans the top surface 11b, right side surface 11c, left side surface 11d, and bottom surface 11f. The gusset portion 11i is formed in a position adjacent to the back surface 11e on the top surface 11b, etc. The gusset portion slide fastener 13 is provided to open and close the gusset portion 11i, and is formed continuously around the entire circumference of each of the top, bottom, left, and right surfaces.

The school bag 1 shown in Figures 1 and 2 has the gusset slide fastener 13 closed. When the slider is pulled to open the gusset slide fastener 13, the gusset 11i opens as shown in Figure 3. This causes the top surface 11b, right side surface 11c, bottom surface 11f, and left side surface 11d to extend in the front-to-rear direction, allowing the storage compartment 11h to be expanded in the front-to-rear direction. In response to the expansion function of this school bag body 10, the school bag 1 is provided with a second connecting portion 50 that can change the fixed height of the flap 20 (described later).

Material of the backpack body 10:
The material (lining fabric and outer fabric) of the school bag body 10 can be one or more materials selected from synthetic fibers, synthetic leather, natural leather, etc., but is not limited thereto. As synthetic fibers, polyamide fibers, polyester fibers, etc. can be used. By using synthetic fibers, the school bag 1 can be made lighter than natural leather. In addition, there are various synthetic fibers with various functions and added value, such as materials with waterproofness and water repellency, materials that can be waterproofed and water repellent, recycled materials that contribute to a circular economy, and materials with excellent functionality such as durability, scratch resistance, strength, and toughness, so by using them, more functionality can be added to the school bag 1. As for natural leather, for example, cowhide or cordovan can be selected.

Description of flap 20

The flap 20 has an exterior shape that has a school bag-like design. Specifically, the flap 20 has a cover portion 21 that covers the top surface 11b and the front surface 11a of the school bag body 10 and has an exterior shape that has a school bag-like design, and is configured to be detachable from the box-shaped body 11.

Specifically, the cover portion 21 has a shape in which the cover surface 21b that covers the front surface 11a continues from the upper curved portion 21a that covers the top surface 11b of the school bag body 10, giving the school bag 1 an appearance similar to that of a school bag design.

A first connecting portion 40 (described later) is provided on the upper portion of the flap 20, and a flap fastener 52 (described later) is provided on the inner surface 22 of the flap 20.

The materials used for the flap 20 (lining fabric and outer fabric) are the same as those used for the school bag body 10 described above, so a duplicate explanation will be omitted. If synthetic leather or natural animal leather (cowhide, cordovan, etc.) is used as the material for the flap 20, it is possible to give the school bag 1 a more luxurious appearance resembling that of a school bag.

Description of the first connecting portion 40 (upper connecting portion between the backpack body 10 and the flap 20)

As shown in FIG. 4, the school bag 1 has a first connecting part 40 that connects the flap 20 to the school bag body 10. The first connecting part 40 can completely separate the school bag body 10 and the flap 20 and connect the school bag body 10 and the flap 20. The first connecting part 40 includes a slide fastener 41 as a "connector" that detachably connects the upper part of the back part 11e of the box-shaped body 11 and the upper part of the flap 20. The slide fastener 41 maintains its closed state unless the slider is moved. Therefore, when the slide fastener 41 is closed, the flap 20 will not come off unexpectedly and the flap 20 can be securely held to the school bag body 10. On the other hand, when attaching or detaching the flap 20 to or from the school bag body 10 (connecting or separating), all that is required is to move the slider, so anyone can easily attach or detach the flap, and even children in the lower grades of elementary school can attach or detach it by themselves without using a strong force.

Description of the second connecting portion 50 (lower connecting portion between the backpack body 10 and the flap 20)

As shown in Figs. 2 and 9, the school bag 1 has a second connecting part 50 that connects the flap 20 to the school bag body 10. The second connecting part 50 can completely separate the school bag body 10 and the flap 20 and connect the school bag body 10 and the flap 20. The second connecting part 50 includes a body fixing device 51 fixed to either the front (front surface 11a) of the school bag body 10 or the back (inner surface 22) of the flap 20, and a flap fixing device 52 fixed to the other of the above.

The main body fastener 51 and the flap fastener 52 are released from the fixed state of the flap 20, which is fixed by the main body fastener 51 and the flap fastener 52, by displacing the flap 20 downward and shifting the flap fastener 52 downward relative to the main body fastener 51. Therefore, the fixed state of the flap 20 can be released by the simple action of displacing the flap 20 downward. Furthermore, even when the flap 20 is grasped to lift the school bag 1, the flap 20 will not come off unexpectedly from the school bag body 10.

The main body fastener 51 and the flap fastener 52 have a "fixing height variable portion" that changes the height position at which the flap 20 is fixed to the backpack main body 10. The "fixing height variable portion" may be anything that can change the fixing height. In particular, in addition to the examples shown in Figures 2 and 9, examples include multiple fasteners, fasteners, hook and loop fasteners, buttons, hooks, buckles, rubber-like elastic bodies, and those that include these, but are not limited to these. Several embodiments of the "fixing height variable portion" are described below.

First embodiment of the "fixed height variable section":
2 and 9A show a first embodiment of the "variable fixing height portion" and an example in which it is provided as a main body fixing device 51. The main body fixing device 51 is an upper main body fixing device 51a and a lower main body fixing device 51b that are positioned apart in the height direction of the school bag main body 10. The height position at which the flap 20 is fixed can be changed by changing the fixing target for the flap fixing device 52 between the upper main body fixing device 51a and the lower main body fixing device 51b. When the flap fixing device 52 is fixed to the upper main body fixing device 51a, the fixing position on the tip side of the flap 20 becomes higher, and an expansion allowance is provided between the flap 20 and the school bag main body 10 to allow the school bag main body 10 to bulge. When the flap fixing device 52 is fixed to the lower body fixing device 51b, the fixing position of the tip side of the flap 20 is lower than when it is fixed to the upper body fixing device 51a, and a natural arrangement that is neither too narrow nor too wide is obtained between the flap 20 and the school bag body 10.

Unlike Fig. 2 and Fig. 9A, three or more main body fasteners 51 may be provided. In this case, one of them may be an upper main body fastener 51a, and the other may be a lower main body fastener 51b. The two adjacent main body fasteners 51 do not have to be the upper main body fastener 51a and the lower main body fastener 51b. Specifically, the upper main body fastener 51a and the lower main body fastener 51b may be composed of multiple mutually independent members, such as two or more fasteners, locking devices, or fasteners, but may also be composed of different parts of a single member, such as a hook-and-loop fastener.

In conventional school bags, when school supplies become bulky, the cover that functions as a lid for the opening of the school bag itself rises up, and even if you try to close it, the lock insertion part at the end of the cover does not reach the lock, so you have no choice but to leave the school bag open. This mars the school bag's appearance and makes it look bad. Furthermore, when you are wearing the school bag and you lower your head to pick up something that has fallen on the floor, the cover may open and the school supplies may slip out of the opening.

In contrast, in the case of the school bag 1, even if the school bag body 10 bulges due to the bulk of the stored school supplies, the fixed height of the flap 20 on the front part 11a can be changed by the "fixed height variable part" (main body fixing device 51, upper main body fixing device 51a, and lower main body fixing device 51b), so the flap 20 can be fixed to the school bag body 10 according to the bulge of the school bag body 10 and the expansion of the gusset part 11i. Therefore, the school bag 1 can maintain its beautiful school bag-like appearance. In addition, the problem of the cover opening and school supplies slipping off, as in conventional school bags, can be prevented by closing the slide fastener 12 of the school bag body 10. Even if the school bag is used in an unrecommended way, such as sandwiching school supplies between the front part 11a or upper part 11b of the school bag body 10 and the flap 20, the flap 20 can be maintained fixed to the school bag body 10, so the school supplies can be prevented from falling off.

Here, with regard to the school bag 1, the case where the school bag body 10 swells includes the case where the school bag body 10 swells in the height direction or the front-to-back direction (the direction in which the front and back face each other), and the case where the flap 20 swells outward by holding an item (such as tools or Western items such as gym clothes) between the school bag body 10 and the flap 20. Also, when the gusset portion 11i is open and school supplies are stored, the school bag body 10 swells in the front-to-back direction. Even when the gusset portion 11i is closed, the school bag body 10 swells if a lot of school supplies are packed into it. In these cases, compared to the normal state in which the school bag body 10 does not swell, the flap 20 rises to swell outward, so by raising the height position at which the flap 20 is fixed, it is possible to fix the flap 20 to the school bag body 10 while suppressing the flap 20 from swelling excessively. More specifically, as shown in FIG. 9A, the flap fastener 52 is fixed to the upper body fastener 51a.

Conversely, when the school bag body 10 does not bulge, the flap 20 does not lift, and the bag presents a beautiful, natural school bag-like appearance. This is because the flap 20 conforms to the contours of the school bag body 10, particularly the shape of the top surface 11b and front surface 11a of the school bag body 10. For this reason, the height at which the flap 20 is fixed is lower than when the school bag body 10 bulges. That is, as shown in FIG. 9A, the flap fixing device 52 is fixed to the lower body fixing device 51b.

As shown in FIG. 9A, the upper body fastener 51a and the lower body fastener 51b have a downward C-shaped locking receiving portion 51c with a downward opening. The downward opening of the locking receiving portion 51c serves as a passage when removing the flap fastener 52, as described below. The flap fastener 52 is formed as a columnar protrusion, and as shown in FIG. 3, has a locking head 52c at its tip and a narrowed portion 52d with a smaller diameter than the locking head 52c.

When fixing the flap 20 to the backpack body 10 at the second connecting part 50, the flap fixing device 52 is pushed vertically toward the circular center of the locking receiving part 51c, and the movable locking piece 51d built into the locking receiving part 51c opens left and right to allow the locking head 52c of the flap fixing device 52 to enter, and when it enters the constricted part 52d, the movable locking piece 51d returns toward the constricted part 52d. As a result, the locking head 52c gets caught on the movable locking piece 51d in the removal direction and is prevented from coming off. In this way, the flap 20 is fixed to the backpack body 10 at the second connecting part 50.

When removing the flap 20 from the backpack body 10 at the second connecting part 50, the flap 20 is displaced downward relative to the backpack body 10. This causes the locking head 52c, which is prevented from coming off by the movable locking piece 51d, to slide downward, allowing it to be pulled out downward through the opening of the locking receiving part 51c. In this way, the flap 20 can be removed from the backpack body 10 at the second connecting part 50.

Second embodiment of the "fixed height variable section":
9B shows another embodiment of the "fixing height variable part". The "fixing height variable part" is provided as a flap fixing device 52, and is an upper flap fixing device 52a and a lower flap fixing device 52b that are located apart in the height direction of the school bag body 10, and the fixing height position of the flap 20 can be changed by changing the fixing target for the main body fixing device 51 between the upper flap fixing device 52a and the lower flap fixing device 52b. In other words, like the above-mentioned main body fixing device 51, the upper flap fixing device 52a and the lower flap fixing device 52b that constitute the flap fixing device 52 can also be fixed to the school bag body 10 by fixing one of them to the main body fixing device 51 depending on the bulge of the school bag body 10, thereby fixing the flap 20 to the school bag body 10.

Three or more flap fasteners 52 may be provided, one of which may be the upper flap fastener 52a and the lower flap fastener 52b. Specifically, the upper flap fastener 52a and the lower flap fastener 52b may be composed of a plurality of mutually independent members, such as two or more fasteners, locking devices, or fasteners, but they may also be composed of different parts of a single member, such as a hook-and-loop fastener.

Description of partition member 60 (FIGS. 5 to 8)

First embodiment of the "partition member" (FIG. 5):
The school bag 1 can be equipped with a partition member 60. The partition member 60 is attached to the storage chamber 11h of the box-shaped main body 11, and has a partition plate 61 capable of covering the upper surface of the lunch container 100 placed on the bottom surface (inner bottom surface 11h1) of the storage chamber 11h, and a partition plate attachment portion 62 provided on the partition plate 61 and capable of being fixed to the inner surface of the box-shaped main body 11.

Conventional school backpacks do not allow the lunch container 100 to be stored separately from other school supplies, so the lunch container 100 is often carried in another bag, for example, which makes the baggage carried on the way to school bulky and inconvenient.

The partition member 60, on the other hand, is attached to the storage chamber 11h inside the box-shaped main body 11, and has a partition plate 61 that can cover the top surface of the lunch container 100 placed on the bottom surface of the storage chamber 11h. Therefore, the partition plate 61 divides the storage chamber 11h, and the school supplies and the lunch container 100 can be stored separately. In this case, the school supplies can be stored above the partition member 60, in front of the lunch container 100, or on the left and right sides of the lunch container 100.

In addition, the term "lunch container" in the specification and claims not only refers to the lunch container itself, but can also include cutlery that cannot be stored in the lunch container (chopsticks, spoon, fork, etc.), condiment packets, beverage containers, and even lunch bags that contain the lunch container and cutlery, etc.

The partition member 60 has a partition plate attachment portion 62 that is provided on the partition plate 61 and can be fixed to the inner surface of the box-shaped main body 11. The partition plate attachment portion 62 is provided with a partition member fixing portion 62a, which can be fixed to the storage chamber fixing portion 11h3 provided on the inner surface of the box-shaped main body 11. In the example shown in FIG. 5, the storage chamber fixing portion 11h3 is provided on the inner back surface 11h2 of the box-shaped main body 11, and the partition member fixing portion 62a is fixed to the inner back surface 11. Both the partition member fixing portion 62a and the storage chamber fixing portion 11h3 shown in FIG. 5 are illustrated as hook-and-loop fasteners, but they may also be buttons, hooks, clips, etc., and are not limited to these.

The partition plate attachment portion 62 can be fixed at a variable position in the height direction of the backpack body 10. Specifically, the partition member fixing portion 62a and the storage chamber fixing portion 11h3 can be fixed at different positions in the height direction. In other words, the height position of the partition plate 61 from the bottom surface (inner bottom surface 11h1) of the storage chamber 11h can be changed so that the partition plate 61 is substantially horizontal. Therefore, the fixing height can be changed according to the height of the lunch container 100.

Other embodiments of the "partition member" (FIGS. 6 to 8):
The partition member 60 may be, for example, as shown in other embodiments in Figures 6 to 8. That is, the partition member 60 has one or more legs extending from the partition plate toward the bottom surface of the storage chamber.

Figure 6A shows a partition member 60A according to the second embodiment. In addition to a partition plate 61 and a partition plate attachment portion 62, the partition member 60A has a front leg portion 63 as a "leg portion." The front leg portion 63 has a pocket 64 positioned opposite the lunch container 100, in which condiments such as soy sauce packets, ice packs, heat retainers, etc. can be stored. When an ice pack or heat retainer is stored, the food packed in the lunch container can be kept cold or warm.

Figure 6B shows a partition member 60B according to a third embodiment. In addition to the partition plate 61 and the partition plate attachment portion 62, the partition member 60B has a right leg portion 65 as a "leg portion," and the right leg portion 65 has a pocket 64.

Figure 6C shows a partition member 60C according to a fourth embodiment. In addition to the partition plate 61, the partition plate attachment portion 62, and the right leg portion 65, the partition member 60C also has a left leg portion 66 as a "leg portion," and the left leg portion 66 has a pocket 64.

Figure 6D shows a partition member 60D according to the fifth embodiment. The partition member 60D is an example having a partition plate 61, a partition plate attachment portion 62, a front leg portion 63, a right leg portion 65, and a left leg portion 66.

In the above-mentioned partition members 60A-60D, a small storage chamber 67 for storing lunch containers is formed inside each "leg". The more "legs" there are, the more closed the small storage chamber 67 becomes, and the more effectively the temperature control material (ice pack, heat insulation material) can be used. Also, even if liquid such as moisture leaks out of the lunch container or the like, the more "legs" there are, the more likely it is that the liquid will not leak out of the partition members 60A-60D and adhere to the inner surface of the storage chamber 11h.

The "legs" of the partition members 60A-60D can be configured to have a length that allows them to abut against the inner bottom surface 11h1 of the storage chamber 11h. This creates a wall on the outside of the small storage chamber 67, making it possible to more reliably prevent leaked liquid from flowing out of the partition members 60A-60D and adhering to the inner surface of the storage chamber 11h.

Figure 6E shows an embodiment in which a storage chamber fixing part 11h3 is provided on the inner bottom surface 11h1 of the storage chamber 11h, and a storage bag 70 with a pocket is attached to this part. A cooling agent or heat-insulating material can be stored in the pocket 70a of the storage bag 70, and the lunch container 100 can be kept cold or warm from the bottom side. The storage bag 70 is provided with a storage bag fixing part 70b that is fixed to the storage chamber fixing part 11h3. Specifically, the storage chamber fixing part 11h3 and the storage bag fixing part 70b can be made of, for example, a hook-and-loop fastener, but are not limited to this.

Figures 7 and 8A show a partition member 60E of the sixth embodiment, and Figure 8B shows a partition member 60F of the seventh embodiment.

The partition member 60E has a partition plate 61 with a pocket 64 and a partition plate attachment part 62 provided as a right leg part, and the partition member fixing part 62a of the partition plate attachment part 62 is fixed to the storage room fixing part 11h3 of the right inner side surface 11h4. As shown in FIG. 7, the partition plate 61 has a length L1 in the depth direction that is shorter than the length L2 in the depth direction of the inner bottom surface 11h1. This allows teaching materials 71 such as textbooks and notebooks to be stored close to the inner back surface 11h2 of the inner bottom surface 11h1, and the lunch container 100 to be stored in front of it. The teaching materials 71 can be stored close to the inner back surface 11h2 by holding them with the back belt 11h5 extending from the inner back surface 11h2, thereby reducing excessive load on the child.

The back belt 11h5 can be constructed in a similar manner to the belt 80 described below, with two belts secured together with a hook-and-loop fastener or the like.

Partition member 60F is an embodiment in which partition member 60E is provided with rear legs 68. Rear legs 68 separate teaching material 71 shown in FIG. 7 from lunch container 100, and can prevent learning material 71 from being scratched by lunch container 100 and prevent lunch juice leaking from lunch container 100 from adhering to learning material 71.

The materials for the partition members 60, 60A-60F and storage bag 70 described above can be paper, synthetic resin, etc., but more preferably, they can be insulating sheets. Alternatively, they can be made of a paper core material with an insulating sheet attached to the surface. An example of an insulating sheet is an aluminum sheet. The insulating sheets can be provided on both or just one side of the partition plate 61, partition plate attachment portion 62, front leg 63, right leg 65, left leg 66, and rear leg 68, for example.

Description of belt 80 (FIG. 5)

The school bag 1 is provided with a belt 80 that is provided in a storage chamber 11h inside the box-shaped main body 11 and that wraps around the outer periphery of the lunch container 100 placed on the inner bottom surface 11h1 of the storage chamber 11h to hold it in place. The belt 80 can reliably hold the lunch container 100 in a fixed position so that it does not slip out of place, and can also firmly hold the lid of the lunch container 100 so that it does not come off the container body even if the lid becomes loose from the container body.

The belt 80 has an upper belt 81 that extends from the top side of the lunch container 100 toward the front side of the school bag body 10 to the side of the front side of the lunch container 100, and a lower belt 82 that extends from the bottom side of the storage chamber 11h to the side of the lunch container 100 located on the front side of the school bag body 10. The upper belt 81 and the lower belt 82 can be fixed to each other on the front side of the school bag body 10. Although FIG. 5 shows an example of fixing using a hook-and-loop fastener, buttons, buckles, clips, etc. may also be used, and the fixing method of the belt 80 of the present disclosure is not limited to these.

When the front part 11a of the school bag 1 is opened wide, the lunch container 100 placed on the inside bottom surface 11h1 of the storage room 11h can be exposed. This allows the attached portion of the upper belt 81 and the lower belt 82 to be exposed even when the partition member 60 is in use, so that the attached portion can be released and the lunch container 100 can be easily removed.

When storing the lunch container 100, the lunch container 100 can be placed in the small storage chamber 67 from the front side of the school bag body 10, and the upper belt 81 and the lower belt 82 can be easily fastened to the front side of the school bag body 10.

Effects of the School Bag 1 Except for those already explained, the effects of the school bag 1 will now be explained.

The school bag 1 comprises a school bag body 10, shoulder straps 30 attached to the back of the school bag body 10, and a flap 20 that covers the top surface (top surface 11b) and front surface (front surface 11a) of the school bag body 10. The school bag body 10 comprises a box-shaped body 11, an opening 11g provided in the box-shaped body 11 for inserting and removing school supplies, and a fastener (slide fastener 12) for opening and closing the opening 11g. The flap 20 has a cover portion 21 that covers the top surface and the front surface and has an external shape that presents a school bag-like design, and is detachable from the box-shaped body 11.

The box-shaped body 11 of the school bag main body 10 has an opening 11g for inserting and removing school supplies, and a fastener (slide fastener 12) for opening and closing the opening 11g. The box-shaped body 11 does not have a constantly open opening in which the internal storage chamber 11h is always exposed to the outside. Therefore, the school bag main body 10 is independent as a backpack and can store school supplies in a sealed manner. The flap 20 has an external shape with a cover part 21 that hangs down from the top surface of the school bag main body 10 to cover the front surface, giving it a school bag-like design, and is detachable from the box-shaped body 11. Therefore, while the school bag 1 has a school bag-like design as a whole, the school bag main body 10 can achieve various practical functions that are desired as a school bag and are not found in conventional school bags. Furthermore, while the school bag 1 is a backpack-like school bag, it can achieve a school bag-like design that is not found in conventional school bags.

As mentioned above, the flap 20 can be easily attached and detached, so the school bag 1 can be used in a wide range of situations. Conventional school bags are only used when going to and from school, and there are no other situations in which they are used. However, with the school bag 1, by removing the flap 20, the school bag body 10 can be used in situations other than going to and from school, for example, when going to a cram school or other extracurricular activities. From a safety perspective, it is recommended that today's school bags 1 be equipped with a security alarm, and many also have a home key attached to prevent them from being lost. Therefore, by removing the flap 20, the student can go to a cram school or other extracurricular activities with the security alarm and home key still attached, which is useful in terms of reducing preparation time and preventing forgetting things when changing.

The school bag 1 can also be made lighter by removing the flap 20. Therefore, by removing the flap 20 to make the school bag lighter, the conventional problem of school bags being too heavy for children can also be solved.

Furthermore, the usage period for conventional school bags is only six years of elementary school, and they are almost never used after graduation. However, by removing the flap 20, the school bag 1 can be freely used beyond the usage period of conventional school bags.

An embodiment of the school bag 1 including an expandable and contractible portion 90

The school bag 1 has an expandable variable section 90 that changes the length or position at which the flap 20 covers the school bag body 10. As mentioned above, the school bag body 10 may bulge due to bulky stored school supplies. In such cases, the expandable variable section 90 can change the length or position at which the flap 20 covers the school bag body 10, so the length or position of the flap 20 can be changed and fixed to the school bag body 10 in accordance with the bulge of the school bag body 10. Note that the case where the school bag body 10 bulges is the same as that explained in the "fixed height variable section", so a duplicate explanation will be omitted.

The school bag 1 has three configurations for adjusting the length, position, and fixed position of the flap 20: a first configuration in which only the "fixed height variable section" described above is provided; a second configuration in which both the "fixed height variable section" and the stretchable variable section 90 are provided; and a third configuration in which only the stretchable variable section 90 is provided. The stretchable variable section 90 described below can be applied to either the second or third configuration.

The stretchable section 90 can be provided on the backpack body 10 or the flap 20, and examples of each will be described below. It can also be provided on both.

An embodiment in which the flap 20 is provided with an expandable and contractible portion 90 (FIGS. 10 and 11):
10A shows an example in which a bellows-like gusset portion 91 is provided on the flap 20 as the stretchable variable portion 90. By pulling the bellows-like gusset portion 91 in the stretching direction, the overall length of the flap 20 is increased. As a result, even if the school bag body 10 expands, the flap 20 and the school bag body 10 can be fixed together by the second connecting portion 50.

The bellows-like gusset portion 91 can be made of the same material as the outer fabric of the flap 20. On the other hand, the bellows-like gusset portion 91 can also be made of an elastic fabric having rubber-like elasticity. Here, when an elastic fabric is used as the bellows-like gusset portion 91, tension in the contraction direction acts on the second connecting portion 50 as the bellows-like gusset portion 91 expands. As described above, the second connecting portion 50 has an opening at the engagement receiving portion 51c facing downward, and is released by moving the flap fixing device 52 downward. Therefore, the bellows-like gusset portion 91 generating tension becomes a means (movement restricting portion) for restricting the flap fixing device 52 from sliding downward. The bellows-like gusset portion 91 using an elastic fabric also has this function. In addition, the intermediate portion 92c in FIG. 10B and the flap side elastic member 93 in FIG. 10C, which will be described later, can also be configured as a "movement restricting portion".

Figure 10B shows an example in which an extension member 92 that can be attached and detached to the first connecting part 40 is provided as the stretchable variable part 90. The extension member 92 has a first connecting part 92a that can be connected to the backpack body 10, a second connecting part 92b that can be connected to the flap 20, and an intermediate part 92c that is located between the first connecting part 92a and the second connecting part 92b. The connection between the first connecting part 92a and the first connecting part 40 and the connection between the second connecting part 92b and the first connecting part 40 can be made using, but is not limited to, a slide fastener. This extension member 92 can increase the overall length of the flap 20.

The material of the middle portion 92c of the extension member 92 can be the same as the outer fabric of the flap 20, but like the bellows-like gusset portion 91, it can also be made of a stretchable fabric with rubber-like elasticity. For ease of understanding, the shaded portion in FIG. 10B is the middle portion 92c made of stretchable fabric. Thus, like the bellows-like gusset portion 91, the middle portion 92c of the extension member 92 can function as a movement restriction portion.

Figure 10C shows an example in which a flap-side stretchable member 93 made of a stretchable fabric with rubber-like elasticity is provided at the base of the first connecting portion 40 (slide fastener) of the flap 20 as the stretchable variable portion 90. For ease of understanding, the hatched portion in Figure 10C is the flap-side stretchable member 93 made of a stretchable fabric. If the flap-side stretchable member 93 is provided at this position, it will not stand out and will not look strange in the appearance of the school bag 1. The width of the flap-side stretchable member 93 along the length direction of the flap 20 can be, for example, 1 cm to 5 cm, more preferably 1 cm to 4 cm, and even more preferably 2 cm to 3 cm.

The flap-side elastic member 93 can not only stretch straight along the longitudinal direction of the flap 20, but can also stretch diagonally in a direction intersecting the longitudinal direction of the flap 20, improving the ability to follow shape deformations caused by various swellings such as twisting deformation of the school bag body 10. Furthermore, like the bellows-like gusset portion 91, the flap-side elastic member 93 can also function as a movement restriction portion.

Figure 11 shows an example in which a flap-side folding section 94 is provided at the base end 20c of the flap 20 as the stretchable variable section 90. The flap-side folding section 94 has a fixed section 94a fixed to the inner surface of the base end 20c of the flap 20, an intermediate section 94b, and a tip section 94c. The boundary between the fixed section 94a and the intermediate section 94b is a mountain fold, and the mountain fold state can be maintained by a pair of holding sections 94d that face each other in the mountain fold state. The holding sections 94d are fixed to the fixed section 94a and the intermediate section 94b, and specifically, a hook-and-loop fastener can be used. The boundary between the intermediate section 94b and the tip section 94c is a valley fold. When not stretched, the folded state is maintained by the fastening of the retaining parts 94d to each other, and as shown in FIG. 11B, the male button 94e as a "connector" provided at the tip 94c fits into the female button 94f as a "connector" provided at the top of the back part 11e of the box-shaped main body 11, thereby connecting the flap 20 to the school bag body 10. On the other hand, when stretched, the retaining parts 94d that are fastened to each other can be peeled away from each other to stretch the mountain folds and valley folds, thereby extending the flap-side folding part 94.

The retaining portion 94d shown in FIG. 11 is exemplified by a hook-and-loop fastener, but buttons, buckles, clips, etc. may also be used, and the method of retaining the folded state of the flap-side folding portion 94 is not limited to these. Also, the buttons (male button 94e, female button 94f) exemplified as "connectors" may be replaced by buckles, clips, etc. When using a slide fastener, there is a risk that the stitching will weaken over time and come undone, but with engaging devices such as buttons, buckles, and clips, there is no such risk.

An embodiment in which an expandable and contractible part 90 is provided on the backpack body 10 (FIGS. 12 to 14):
FIG. 12 shows an example in which a main body side elastic member 95 is provided as the elastic variable part 90 on the school bag main body 10. The main body side elastic member 95 is provided by sewing elastic fabric having rubber-like elasticity to the base part of the first connecting part 40 (slide fastener) of the school bag main body 10. For ease of understanding, the hatched part in FIG. 12 is the main body side elastic member 95 made of elastic fabric. The width in the elastic direction of the main body side elastic member 95 can be the same as that of the flap side elastic member 93 described above. In addition, the main body side elastic member 95 can also be stretched and deformed diagonally as explained for the flap side elastic member 93, so that the followability to the shape deformation caused by various swellings such as twisting deformation of the school bag main body 10 can be improved. Furthermore, like the bellows-like gusset part 91, the main body side elastic member 95 can also function as a movement restricting part.

Figure 13 shows an example in which the backpack body 10 is provided with a body-side folding section 96 as the expandable variable section 90. The structure and effect of the body-side folding section 96 are the same as those of the flap-side folding section 94, and the descriptions of the fixing section 96a, middle section 96b, tip section 96c, holding section 96d, male button 96e, and female button 96f are the same as those of the fixing section 94a, middle section 94b, tip section 94c, holding section 94d, male button 94e, and female button 94f, respectively. The body-side folding section 96 also makes it easy to adjust the length of the flap 20.

Figure 14 shows an example in which the backpack body 10 is provided with a main body side folding section 97 as the expandable variable section 90. The main body side folding section 97 is different from the main body side folding section 96 in that it does not have a retaining section 96d, but is otherwise the same. The main body side folding section 96 is maintained in the folded state by the retaining section 96d, but the main body side folding section 97 is provided with a pocket section 97a having a hole 97b. The main body side folding section 97 can be maintained in the folded state by fitting the female button 96f on the flap 20 side into the male button 96e arranged in the hole 97b. The lower end of the pocket section 97a is sewn to the back section 11e of the backpack body 10, etc., and the inside of the pocket section 97a becomes a storage pocket for the main body side folding section 97. This allows the length of the flap 20 to be easily adjusted in the same way as when the retaining section 96d is provided.

An embodiment in which the backpack body 10 and the flap 20 are provided with an expandable and contractible portion 90 (FIG. 15):
Figure 15 shows an example in which, as the expandable and contractible section 90, the school bag body 10 is provided with the aforementioned body-side folding section 96, and the flap 20 is provided with the aforementioned flap-side folding section 94. This allows a longer adjustment margin to be secured by the body-side folding section 96 and the flap-side folding section 94. The body-side folding section 96 is the same as that described in Figure 13, except that a female button 96f is used, and the flap-side folding section 94 is the same as that described in Figure 11.

Modifications of the embodiment

The above-described embodiment is merely an example of the present disclosure, and the school bag of the present disclosure can be implemented in other ways than the above-described embodiment, so we will list and explain some modified examples.

[Variation 1] In the above embodiment, the flap 20 covers the front surface 11a and top surface 11b of the school bag body 10, but as shown in FIG. 16, the school bag body 10 may have side flaps 20a, 20b that cover the right side surface 11c and left side surface 11d. This can protect the sides of the school bag body 10. Also, if the right side surface 11c and left side surface 11d of the school bag body 10 are provided with pockets with open tops for storing small items, there is a risk that rainwater will get into the pockets when it rains, but the side flaps 20a, 20b can prevent rainwater from getting in.

[Variation 2] In the above embodiment, the school bag 1 is illustrated in which the front part 11a is integrally connected to the bottom part 11f and cannot be separated from it, but the front part 11a may be configured to be detachable from the bottom part 11f.

[Variation 3] In the above embodiment, the school bag 1 is exemplified in which the front part 11a can be opened and closed relative to the top part 11b, right side part 11c, and left side part 11d by the slide fastener 12. However, the front part 11a can also be opened and closed relative to the bottom part 11f and the lower sides of the right side part 11c and left side part 11d by the slide fastener 12, so that the lower part of the school bag 1 can be opened and closed while keeping the upper part closed.

[Variation 4] In the above embodiment, a slide fastener 12 is exemplified, but other fasteners may be used as long as they can open and close the front portion 11a. Examples include, but are not limited to, hook-and-loop fasteners, buttons, hooks, etc.

[Variation 5] In the above embodiment, the flap 20 covers the top surface 11b and the front surface 11a, but it may also be configured to cover all or part of the right side surface 11c, the left side surface 11d, and the bottom surface 11f.

[Variation 6] In the above embodiment, the slide fastener 41 is exemplified as the first connecting portion 40, but other connecting members may be used as long as the flap 20 can be attached and detached to the backpack body 10. Examples include, but are not limited to, hook-and-loop fasteners, buttons, hooks, and buckles.

[Variation 7] In the above embodiment, an example was shown in which the second connecting part 50 is provided with multiple main body fasteners 51 or flap fasteners 52 to form a "fixed height variable part", but if the fixed height of the flap 20 is not adjusted by the second connecting part 50, there may be only one main body fastener 51 and one flap fastener 52. Examples of cases in which the fixed height is not adjusted by the second connecting part 50 include a structure in which the length or position of the flap 20 is changed only by the aforementioned variable stretch part 90, a case in which the gusset part 11i is not provided, and a case in which the flap 20 is fixed in a fixed position regardless of the presence or absence of the gusset part 11i.

[Variation 8] In the above embodiment, the locking receiving portion 51c has an opening facing downward, but the opening may face upward, left, right, or diagonally.

[Variation 9] In the above embodiment, an example was shown in which the pockets 64 were provided in the "legs" of the partition members 60A to 60D, but pockets may also be provided on the surface of the partition plate 61 of the partition members 60, 60A to 60D facing the small storage chamber 67 or on the outer surface of the opposite side. This increases the storage capacity of the partition members 60, etc., and can further improve the temperature regulating effect of the cooling agent or heat retaining agent.

[Variation 10] In the above embodiment, the surface of the pocket 64 facing the lunch container 100 may be made of a mesh material. This can improve the temperature control effect of the cooling agent or heat retaining agent.

[Variation 11] In the above embodiment, the school bag 1 is in the shape of a vertically long box, but it may be in the shape of a horizontally long box with the dimensions decreasing in the order of width, height, and depth.

[Variation 12] In the above embodiment, an example was shown in which the backpack body 10 is provided with a gusset portion 11i, but it may not have the gusset portion 11i. Although an example was shown in which the gusset portion 11i is formed around the entire circumference of the top surface portion 11b, right side surface portion 11c, left side surface portion 11d, and bottom surface portion 11f, it may be provided only on a portion of the circumference (for example, the right side surface portion 11c, left side surface portion 11d, and bottom surface portion 11f). Although the gusset portion 11i is shown as being expandable in the front-to-rear direction, a gusset portion that is expandable in the up-down direction may be provided. In this case, for example, a gusset portion may be provided at the boundary between the bottom end of the front surface portion a, right side surface portion 11c, left side surface portion 11d, and back surface portion 11e and the bottom surface portion 11f.

[Variation 13] In the above embodiment, as shown in FIG. 9, an example was shown in which the main body fasteners 51 are arranged vertically, but the upper main body fastener 51a and the lower main body fastener 51b may be arranged on the left and right, respectively.

1 School bag 1a Front curved portion 10 School bag body 11 Box-shaped body 11a Front portion 11a1 Upper curved portion 11b Top surface portion 11c Right side surface portion 11d Left side surface portion 11e Back portion 11f Bottom surface portion 11g Opening 11h Storage compartment 11h1 Inner bottom surface 11h2 Inner back surface 11h3 Storage compartment fixing portion 11h4 Inner side surface 11h5 Back belt 11i Gusset portion 12 Slide fastener 13 Gusset portion slide fastener 20 Flap 20a, 20b Side flap 20c Base end portion 21 Cover portion 21a Upper curved portion 21b Cover surface 22 Inner surface 30 Shoulder belt 40 First connecting portion 41 Slide fastener 50 Second connecting portion 51 Main body fixing device 51a Upper main body fixing device 51b Lower main body fixing device 51c Engagement receiving portion 51d Movable locking piece 52, flap fixing device 52a, upper flap fixing device 52b, lower flap fixing device 52c, locking head 52d, constricted portion 60, partition member 60A-60D, partition member 61, partition plate 62, partition plate attachment portion 62a, partition member fastening portion 63, front leg portion 64, pocket 65, right leg portion 66, left leg portion 67, small storage compartment 68, rear leg portion 70, storage bag 70a, pocket 70b, storage bag fastening portion 71, teaching material 80, belt 81, upper belt 82, lower belt 90, stretchable and variable portion 91, bellows-like gusset portion 92, extension member 92a, first connecting portion 92b, second connecting portion 92c, middle portion 93, flap side stretchable member 94, flap side folded portion 94a, fixing portion 94b, middle portion 94c, tip portion 94d, holding portion 94e Male button 94f Female button 95 Body side elastic member 96 Body side folded portion 96a Fixing portion 96b Middle portion 96c Tip portion 96d Holding portion 96e Male button 96f Female button 97 Body side folded portion 97a Pocket portion 97b Hole

Claims (21)

The backpack comprises a backpack body, a shoulder belt attached to the back of the backpack body, and a flap covering the top and front of the backpack body,
The backpack body has a box-shaped body, an opening provided in the box-shaped body for inserting and removing school supplies, and a fastener for opening and closing the opening,
The flap has a covering portion covering the top surface and the front surface, and has an appearance shape resembling a school bag design, and is detachable from the box-shaped main body.
school bag. Furthermore, the school bag includes a connecting portion that connects the flap to the school bag body,
The connecting portion includes either a slide fastener or a button that detachably connects the upper portion of the back surface of the box-shaped main body and the upper portion of the flap.
The school bag according to claim 1. Furthermore, the school bag includes a connecting portion that connects the flap to the school bag body,
The connecting portion includes a main body fastener provided on either the front surface of the school bag main body or the back surface of the flap, and a flap fastener provided on the other of the two.
The school bag according to claim 1. The fastening state of the main body fastener and the flap fastener is released by displacing the flap downward from a fastening state of the flap in which the main body fastener and the flap fastener are fastened to each other, and shifting the flap fastener downward with respect to the main body fastener.
The school bag according to claim 3. The body fixing device and the flap fixing device each have a fixing height variable portion that changes the height position at which the flap is fixed to the backpack body.
The school bag according to claim 3. The variable fixing height portion is provided as a fixing device for the main body, and is an upper fixing device and a lower fixing device that are positioned apart from each other in the height direction of the backpack main body,
The height position of the flap can be changed by changing the object to be fixed to the flap fixture between the upper main body fixture and the lower main body fixture.
The school bag according to claim 5. The variable height fixing portion is provided as a flap fixing device, and is a fixing device for an upper flap and a fixing device for a lower flap that are positioned apart from each other in the height direction of the backpack body,
The height position of the flap can be changed by changing the object to be fixed to the main body fixture between the upper flap fixture and the lower flap fixture.
The school bag according to claim 5. Furthermore, the school bag has an expandable variable part that changes the length or position at which the flap covers the school bag body.
The school bag according to claim 1. The stretchable portion is a main body side stretchable member provided on the backpack main body,
The school bag according to claim 8. The stretchable variable portion is a flap-side stretchable member provided on the upper portion of the flap.
The school bag according to claim 8. The stretchable portion is an extension member having a first connecting portion connectable to the backpack body, a second connecting portion connectable to the flap, and an intermediate portion between the first connecting portion and the second connecting portion.
The school bag according to claim 8. The stretchable portion has a stretchable fabric.
The school bag according to claim 8. The stretchable portion has a bellows-like gusset portion.
The school bag according to claim 8. The expandable and contractible portion has a folding portion.
The school bag according to claim 8. Furthermore, the backpack includes a partition member,
The partition member is attached to the storage chamber inside the box-shaped main body, and has a partition plate capable of covering the upper surface of the lunch container placed on the bottom surface of the storage chamber, and a partition plate attachment portion provided on the partition plate and capable of being fixed to the inner surface of the box-shaped main body.
The school bag according to claim 1. The partition plate attachment portion has a fixed position that can be changed in the height direction of the backpack body.
The school bag according to claim 15. The partition member has one or more legs extending from the partition plate toward the bottom surface of the storage chamber.
The school bag according to claim 15. The partition member has one or more pockets.
The school bag according to claim 17. The leg portion has a length for contacting the bottom surface of the storage chamber,
The partition member forms a small storage chamber surrounded by the partition plate and the leg portion.
The school bag according to claim 17. Furthermore, the school bag is provided in a storage chamber inside the box-shaped main body and includes a belt that wraps around an outer periphery of a lunch container placed on a bottom surface of the storage chamber to hold the lunch container.
The school bag according to claim 1. The belt includes an upper belt extending from the top surface of the lunch container placed on the bottom surface to the side surface of the lunch container toward the front side of the school bag body, and a lower belt extending from the bottom surface of the storage chamber to the side surface of the lunch container located on the front side of the school bag body.
The school bag according to claim 20.

Images