bag

Abstract

The present invention provides a bag with a suitable configuration that not only ensures that the sides of the storage compartment body and the lid are adequately sealed when the bag is closed, but also allows the lid to be opened smoothly and quickly. [Solution] The bag has a left zipper C and a right zipper D separately and independently arranged between the left and right sides of the storage body A and the lid B. By moving the front end of the lid B from bottom to top, the lid B changes its position from a closed position (T) to an open position (H), and the left and right zippers C and D automatically transition from a closed state (X) to an open state (Y).

Description

Technical Field

[0007] ,

[0001] The present invention relates to a bag capable of storing various articles.

Background Art

[0002] Conventionally, there has been known a school satchel including a storage unit main body provided with an opening at the upper part, and a lid body whose base end is continuously provided to the storage unit main body and can change its posture between a closed posture for closing the opening and an open posture for opening the opening (see, for example, Patent Document 1).

[0003] Even when the lid body is in the closed posture, in this type of satchel, a gap is formed between the lid body and the opening provided in the storage unit main body. Therefore, in the conventional satchel, foreign matters such as sand and rainwater easily enter the inside through the gap between the lid body in the closed posture and the opening of the storage unit main body.

[0004] In addition, when a configuration for covering the gap between the lid body and the storage unit main body is applied, it becomes difficult to quickly open the lid body, and another problem occurs in that the usability of the user is impaired.

[0005] The above circumstances are the same for bags other than satchels.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] The present invention has been made in view of the above circumstances, and aims to provide a bag with a suitable configuration in which, at the very least, the space between the side of the storage compartment body and the lid is suitably sealed in the closed position, and the operation of opening the lid can be performed smoothly and quickly. [Means for solving the problem]

[0008] In other words, the present invention has the following configuration.

[0009] The invention described in claim 1 is a bag comprising a storage compartment body having an opening at the top, and a lid whose base end is connected to the storage compartment body and which can change its position between a closed position that closes the opening and an open position that opens the opening, wherein a left zipper and a right zipper are separately and independently disposed between the left and right sides of the storage compartment body and the lid, and the lid is set so that by moving the front end of the lid from bottom to top, the lid changes its position from the closed position to the open position and the left and right zippers automatically transition from the closed state to the open state.

[0010] The invention described in claim 2 is the bag according to claim 1, wherein the lid is composed of a flexible sheet-like lid body portion.

[0011] The invention described in claim 3 is the bag according to claim 1, wherein the left and right zippers in the closed state are arranged to extend in a partially arc shape in a side view, or to extend inclined with respect to a virtual horizontal line or a virtual vertical line.

[0012] The invention described in claim 4 is the bag according to claim 1, wherein a fastener for locking the lid in the closed position is provided between the tip portion of the lid and the storage body.

[0013] The invention described in claim 5 is the bag according to claim 4, wherein the fastener is configured to release the locked state by pulling the lid upward or downward.

[0014] The invention described in claim 6 is the bag according to claim 1, wherein the storage compartment body is provided with a shoulder strap.

[0015] The invention described in claim 7 is the bag according to claim 1, wherein an expandable storage section is provided at the lower part of the storage section body, and is configured to allow the posture to be changed between a non-use posture in which a predetermined storage space is not formed and a use posture in which a predetermined storage space is formed.

[0016] The invention described in claim 8 is a bag according to claim 1, wherein the left zipper comprises one left zipper component disposed on the left side of the storage compartment body, another left zipper component disposed on the left side of the lid, and a left slider interposed between the one and the other left zipper component to connect or disconnect the one and the other left zipper component to take the closed or open state, and the right zipper comprises one right zipper component disposed on the right side of the storage compartment body, another right zipper component disposed on the right side of the lid, and a right slider interposed between the one and the other right zipper component to connect and disconnect the one and the other right zipper component to take the closed or open state.

[0017] The invention described in claim 9 is a bag according to claim 1, wherein the storage compartment body comprises a bottom wall, left and right side walls erected on the left and right side edges of the bottom wall, and a front wall and a rear wall arranged to connect the front and rear edges of the left and right side walls, and the opening is formed by the upper edges of the left and right side walls, the front wall, and the rear wall.

[0018] The invention described in claim 10 is the bag according to claim 1, wherein the lid comprises a flexible sheet-like lid body and a protruding piece provided on the lid body. [Effects of the Invention]

[0019] As described above, according to the present invention, it is possible to provide a bag having a preferable configuration in which at least the side portions between the storage part main body and the lid body are preferably closed in the closed posture, and the operation of opening the lid body can be carried out quickly without difficulty.

Brief Description of the Drawings

[0020] [Figure 1] Perspective view showing an embodiment of the present invention. [Figure 2] Left side view in the same embodiment. [Figure 3] Perspective view in the same embodiment. [Figure 4] Perspective view in the same embodiment. [Figure 5] Perspective view in the same embodiment. [Figure 6] Perspective view in the same embodiment. [Figure 7] Left side view in the same embodiment. [Figure 8] Perspective view in the same embodiment. [Figure 9] Perspective view in the same embodiment.

Embodiments for Carrying Out the Invention

[0021] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 9.

[0022] This embodiment applies the present invention to a school satchel (hereinafter simply referred to as a "bag") which is a bag.

[0023] The bag includes a storage part main body A having a storage space sp capable of storing articles (not shown) inside and an opening K provided at the upper part, and a lid body B whose base end portion is continuously provided with the storage part main body A and can change its posture between a closed posture (T) for closing the opening K and an open posture (H) for opening the opening K.

[0024] The bag has a left zipper C and a right zipper D separately and independently positioned between the left and right sides of the main storage compartment A and the lid B. The bag also has a fastener E between the front end of the lid B and the main storage compartment A that locks the lid B into the closed position (T).

[0025] Furthermore, the bag is provided with an expandable storage compartment F located at the bottom of the main storage compartment A, which is configured to allow the bag to assume a position that can be used only when necessary, that is, a position in which items (not shown) can be stored inside.

[0026] The bag of this embodiment will be described in detail below.

[0027] <<Storage Unit Body A>> The storage unit body A is provided with a storage space sp inside which items can be stored.

[0028] The storage compartment body A comprises a bottom wall 1 that is roughly rectangular in shape, left and right side walls 2 erected on the left and right side edges of the bottom wall 1, and a front wall 3 and a rear wall 4 arranged to connect the front and rear edges of the left and right side walls 2.

[0029] The main body A of the storage unit is provided with a storage space sp enclosed by a bottom wall 1, left and right side walls 2, a front wall 3, and a rear wall 4.

[0030] The storage compartment body A has an opening K formed by the upper edges of the left and right side walls 2, the front wall 3, and the rear wall 4.

[0031] <Bottom wall 1> The bottom wall 1 is roughly rectangular in shape and extends in the left-right direction. The bottom wall 1 also serves as the top wall 1 of the expandable storage section F, which will be described later (hereinafter, when describing the top wall, the same reference numeral "1" as the bottom wall will be used).

[0032] <Left and right side walls 2> The left and right side walls 2 extend upward from the left and right edges of the bottom wall 1, respectively, substantially perpendicular to the bottom wall 1. The left and right side walls 2 are substantially symmetrical in shape. The upper parts of the left and right side walls 2 are provided with curved edge portions 2e that are curved so as to be positioned gradually backward toward the top when viewed from the side.

[0033] The left and right side walls 2 each comprise a front side wall edge portion 2a extending substantially linearly vertically from the front end of the bottom wall 1, a rear side wall edge portion 2b extending substantially linearly vertically from the rear end of the bottom wall 1, and an upper side wall edge portion 2c which includes a curved edge portion 2e that forms a partial arc and is disposed between the upper end portion of the front side wall edge portion 2a and the upper end portion of the rear side wall edge portion 2b.

[0034] The front side wall edge 2a is connected to the side edge of the front wall 3. The rear side wall edge 2b is connected to the side edge of the rear wall 4. The upper end of the front side wall edge 2a is set to a lower position than the upper end of the rear side wall edge 2b.

[0035] The curved edge portion 2e included in the upper side wall edge portion 2c extends in a partially arc shape when viewed from the side. More specifically, the curved edge portion 2e in this embodiment extends in a roughly quarter-circle arc shape.

[0036] One of the left fastener components c1, which constitutes the left fastener C, is positioned on the upper side wall edge 2c of the left side wall 2. The left fastener C will be described in detail later.

[0037] One of the right fastener components d1, which constitutes the right fastener D, is positioned on the upper side wall edge 2c of the right side wall 2. The right fastener D will be described in detail later.

[0038] Side pockets 21 that open upward are provided on the lower outer surface of each of the left and right side walls 2.

[0039] <Front wall 3> The front wall 3 extends upward from the front edge of the bottom wall 1, approximately perpendicular to the bottom wall 1. The front wall 3 has a roughly elongated rectangular shape. The upper edge of the front wall 3 extends in a straight line in the left-right direction.

[0040] The vertical dimension of the front wall 3 is set such that the upper edge of the front wall 3 is at a height corresponding to the upper portion of the front side wall edge 2a of the left and right side walls 2.

[0041] In this embodiment, one of the fastener components e1 constituting the fastener E is attached to the middle of the outer surface of the front wall 3 in both the left-right and up-down directions. The fastener E will be described in detail later.

[0042] An inner pocket, not shown in the figure, is provided on the inner surface of the front wall 3. The inner pocket can be opened and closed by means of an opening and closing mechanism, such as a zipper.

[0043] <Back wall 4> The rear wall 4 extends upward from the rear edge of the bottom wall 1, approximately perpendicular to the bottom wall 1. The rear wall 4 has a roughly elongated rectangular shape, with a longer vertical dimension than the front wall 3. The upper edge of the rear wall 4 extends linearly in the left-right direction. The base end of the lid B is connected to the upper edge of the rear wall 4.

[0044] The vertical dimension of the rear wall 4 is set such that the upper edge of the rear wall 4 is at a height corresponding to the upper portion of the rear side wall edge 2b of the left and right side walls 2.

[0045] A rear pocket 41, which opens upward, is provided on the inner surface of the rear wall 4.

[0046] In this embodiment, the bag is provided with a shoulder strap L on the outer side of the rear wall 4 that constitutes the main body A of the storage compartment. In addition, a cushion M is provided on the outer side of the rear wall 4 to correspond to the user's back.

[0047] The upper outer surface of the rear wall 4 is provided with an annular hook portion N that is suitable for use when the user grips it or hooks it onto a hook or the like.

[0048] <<Lid body B>> The lid B comprises a flexible, sheet-like lid body portion 5 and a protruding piece portion 6 that is located midway between the left and right ends of the lid body portion 5.

[0049] In the closed position (T), the lid B covers the opening K of the storage compartment body A from above, and in the open position (H), it moves to a position where it does not cover the opening K, allowing items to be put in and taken out of the storage space sp of the storage compartment body A.

[0050] The lid B is configured to rotate relative to the storage compartment body A between a closed position (T) and an open position (H), with a hinge portion J provided between its base end and the upper edge of the rear wall 4 as the pivot point.

[0051] The width of lid B is set to be approximately the same as, or slightly longer than, the width of storage compartment body A.

[0052] <Lid body part 5> The lid body portion 5 is roughly rectangular in shape overall. The left-right dimension of the lid body portion 5 is approximately the same as, or slightly longer than, the rear wall 4 and the front wall 3. The left and right corners of the front end of the lid body portion 5 are rounded.

[0053] The base end portion of the lid body portion 5, which extends in the left-right direction, is connected to the upper edge of the rear wall 4, which also extends in the left-right direction.

[0054] The left side edge of the lid body portion 5 is fitted with the other left fastener component c2, which constitutes the left fastener C. The left fastener C will be described in detail later.

[0055] The right side edge of the lid body portion 5 is fitted with the other right fastener component d2, which constitutes the right fastener D. The right fastener D will be described in detail later.

[0056] <Protruding piece 6> The projection portion 6 is a roughly rectangular strip attached to the middle of the left-right direction at the extended end of the lid body portion 5.

[0057] The other fastener component e2, which constitutes the fastener E, is attached to the inner surface of the protruding piece 6.

[0058] <<Zippers C and D on the left and right>> The left and right zippers C and D, which are independently positioned between the left and right sides of the storage compartment body A and the lid B, will now be described.

[0059] <Left zipper C> The left zipper C is composed of one left zipper component c1 disposed on the upper side wall edge 2c of the left side wall 2, which is the left part of the storage compartment body A; the other left zipper component c2 disposed on the left side edge of the lid body 5, which is the left part of the lid B; and a left slider c3 interposed between the one and the other left zipper component c1 and c2 to connect or disconnect the one and the other left zipper component c1 and c2 in order to take a closed state (X) or an open state (Y).

[0060] The left zipper C is in a closed state (X) when the left slider c3 is located at the front end (lower end) in the extension direction, that is, when the left zipper components c1 and c2 on one side are connected to each other.

[0061] In the closed state (X), the left fastener C is provided to have a portion that extends in a partially arc shape when viewed from the side.

[0062] Furthermore, the left zipper C is in an open state (Y) when the left slider c3 is located at the rear end (upper end) in the extension direction, meaning that one and the other left zipper components c1 and c2 are separated from each other.

[0063] <Right zipper D> The right zipper D is composed of one right zipper component d1 disposed on the upper side wall edge 2c of the right side wall 2, which is the right part of the storage compartment body A; the other right zipper component d2 disposed on the right side edge of the lid body 5, which is the right part of the lid B; and a right slider d3 interposed between the one and the other right zipper component d1 and d2 to connect or disconnect the one and the other right zipper component d1 and d2 in order to take a closed state (X) or an open state (Y).

[0064] The right fastener D is in a closed state (X) when the right slider d3 is located at the front end (lower end) in the extension direction, that is, when the right fastener components d1 and d2 on one side are connected to each other.

[0065] In the closed state (X), the right fastener D is provided such that, in a side view, it has a portion that extends in a partially arc shape.

[0066] Furthermore, the right fastener D is designed to be in an open state (Y) when the right slider d3 is located at the rear end (upper end) in the extension direction, meaning that one and the other right fastener components d1 and d2 are separated from each other.

[0067] <<Regarding the left and right zippers C and D that are connected to lid B>> In this embodiment, the lid B of the bag, when in the closed position (T), covers the opening K of the storage compartment body A from above. The bag is configured such that when the lid B is in the closed position (T), the user can close the left and right zippers C and D by sliding the left slider c3 and the right slider d3.

[0068] The bag is designed so that when the user moves the front end of the lid B from bottom to top, that is, pulls the front end of the lid B upwards from bottom to top, the lid B changes position from closed (T) to open (H), and the left and right zippers C and D automatically transition from closed (X) to open (Y).

[0069] At this time, the left and right sliders c3 and d3 of the left and right zippers C and D automatically slide from the front side (front lower side) to the back side (rear upper side) in conjunction with the opening of the lid B, without being touched by the user.

[0070] In other words, in this embodiment, when the user grasps the tip end of the bag and pulls it up from below to open the lid B, the left zipper components c1 and c2 that make up the left zipper C, and the right zipper components d1 and d2 that make up the right zipper D, move relative to each other in a direction away from each other from the front to the back, and this relative movement in the direction away from each other pushes the left slider c3 and the right slider d3 toward the back.

[0071] <<Fastener E>> The fastener E is used to lock the lid B in the closed position (T). The fastener E is located between the front end of the lid B and the storage compartment body A.

[0072] The fastener E is composed of one fastener component e1 provided on the outer surface side of the front wall 3 of the storage compartment body A, and the other fastener component e2 provided on the inner surface side of the projection 6 of the lid B.

[0073] In this embodiment, one fastener component e1 and the other fastener component e2 are configured to attract each other by an internal magnet (not shown). Furthermore, the one fastener component e1 and the other fastener component e2 are configured to fit together.

[0074] One fastener component e1 is provided with an external fitting recess e11 that is open forward and downward. The other fastener component e2 is provided with an internal fitting projection e21 that fits into the external fitting recess e11 provided on the first fastener component e1.

[0075] The internal fitting projection e21 provided on the other fastener component e2 is configured to fit into the external fitting recess e11 of the one fastener component e1 even when inserted from both the front and the bottom. On the other hand, when the internal fitting projection e21 provided on the other fastener component e2 is to be released from the external fitting recess e11 in a fitted state, it will not be released unless it is moved downwards.

[0076] In other words, the fastener E in this embodiment is configured to release the locked state by pulling down the tip of the lid B, which is in the closed position (T).

[0077] <<Expandable Storage Unit F>> The extended storage unit F is configured to allow for orientation changes between an unused position (G) in which a predetermined storage space sk is not formed and an operating position (I) in which a predetermined storage space sk is formed. The extended storage unit F is located below the main storage unit A.

[0078] The extended storage section F comprises a top wall 1 which also serves as the bottom wall 1 of the main storage section A, a movable wall 7 formed to be approximately the same size as the top wall 1 and running approximately parallel to the bottom wall 1 in the unused position (G), and hanging down from the rear edge of the top wall 1 in the usage position (I), a deformable wall structure 8 disposed between the top wall 1 and the movable wall 7 and mainly composed of a sheet material that is easily deformable, and a fastener R disposed between the top wall 1 and the movable wall 7.

[0079] <Ceiling Wall 1> The top wall 1 has one fastener component r1 arranged on its front edge and left and right side edges so as to form a roughly U-shape overall, forming a fastener R. The rear end of the movable wall 7 in the unused position (G) is connected to the rear edge of the top wall 1.

[0080] <Movable wall 7> The movable wall 7 is positioned parallel to the top wall 1 in the unused position (G) and functions as the bottom wall. In the operating position (I), the movable wall 7 is positioned to hang down from the rear edge of the bottom wall 1 and functions as the rear wall 4.

[0081] A grounding member 71 is attached to the outer surface of the movable wall 7, which contacts the floor, top plate, or other mounting surface when not in use (G).

[0082] The movable wall 7 has the other fastener component r2, which forms the fastener R, arranged at its front edge and left and right side edges in the unused position (G), so as a whole it forms a roughly U-shape.

[0083] <Deformable wall structure 8> The deformable wall structure 8 comprises a front wall structure 81 positioned opposite the movable wall 7 in the usage orientation (I), a bottom wall structure 82 positioned opposite the top wall 1 in the usage orientation (I), and left and right side wall structures 83 and 84 arranged between the top wall 1, the movable wall 7, the front wall structure 81, and the side edges of the bottom wall structure 82 in the usage orientation (I).

[0084] The deformable wall structure 8 is mainly composed of a fabric material that has low elasticity and is easily deformable. The deformable wall structure 8 is formed so that the front wall structure 81, the bottom wall structure 82, and the left and right side wall structures 83 and 84 are integrally continuous.

[0085] The upper edge of the front wall component 81 is connected to the upper edge of the top wall 1. The upper edges of the left and right side wall components 83 and 84 are connected to the left and right side edges of the top wall 1, respectively. The rear edges of the left and right side wall components 83 and 84 are connected to the left and right side edges of the movable wall 7, respectively.

[0086] Here, in the vertical intermediate portions of the left and right side wall components 83 and 84, stitching lines 83n and 84n are provided, respectively, that extend gradually downward from the rear end towards the front end in a side view. The stitching lines 83n and 84n are provided in conjunction with sewing adjacent fabrics together to form the left and right side wall components 83 and 84.

[0087] The stitching lines 83n and 84n extend diagonally in a nearly straight line. The left and right side wall components 83 and 84 are set so that when the extended storage section F is in use (I), the parts on which the stitching lines 83n and 84n are provided are slightly set back toward the storage space sk, and the configuration makes it easy to fold smoothly when in non-use position (G).

[0088] The front wall component 81 and the right side wall component 84 that constitute the deformable wall structure 8 are connected by an expandable storage fastener P so as to form an L-shape in the usage position (I). The expandable storage fastener P is arranged to extend horizontally above the front wall component 81 and the right side wall component 84 in the usage position (I).

[0089] The expandable storage compartment F can be in a non-use position (G) where a predetermined storage space sk is not formed by closing the zipper R. On the other hand, the expandable storage compartment F can be in a use position (I) where a predetermined storage space sk is formed by fully opening the zipper R.

[0090] In other words, one fastener component r1, which is provided in a U-shape on the top wall 1, and the other fastener component r2, which is provided in a U-shape on the movable wall 7, are configured to be able to move toward and away from each other (open and close) by a pair of sliders r3. The expandable storage section F can be selectively positioned as either unused (G) or in use (I) by moving the one and the other fastener components r1 and r2 toward and away from each other by the sliders r3.

[0091] The extended storage section F maintains its unused position (G) by closing the zipper R while compressing and sandwiching the deformable wall structure 8 between the top wall 1 and the movable wall 7.

[0092] The expandable storage section F can be configured to adopt a usage posture (I) in which the deformable wall structure 8 reveals the front wall structure 81, the bottom wall structure 82, and the left and right side wall structures 83 and 84 by opening the zipper R between the top wall 1 and the movable wall 7 (Y).

[0093] In the extended storage section F, a predetermined storage space sk is formed that allows items to be stored inside the interiors of the top wall 1, movable wall 7, front wall component 81, bottom wall component 82, and left and right side wall components 83 and 84, when in use (I).

[0094] The loading and unloading of items into and out of the predetermined storage space sk provided in the expandable storage section F can be smoothly carried out by opening and closing the L-shaped expandable storage section zipper P provided on the deformable wall structure 8.

[0095] In other words, the expansion storage section fastener P is connected to the front wall component 81 and the right side wall component 84, which is one of the side wall components of the deformable wall component 8 that constitutes the expansion storage section F, so as to extend horizontally.

[0096] In this embodiment, since the expansion storage compartment zipper P is provided in an L-shape, even when the expansion storage compartment zipper P is fully open, the bottom wall component 82 is properly positioned below the storage space sk. In other words, because the expansion storage compartment zipper P is configured in an L-shape, the expansion storage compartment F allows for smooth loading and unloading of items into and out of the storage space sk.

[0097] Furthermore, even when items are stored in the storage space sk, the items are supported by the bottom wall component 82, the front wall component 81 connected to the bottom wall component 82, and the right side wall component 84, thus effectively preventing unintended falls.

[0098] As described above, the bag according to this embodiment comprises a storage compartment body A having an opening K at its top, and a lid B whose base end is connected to the storage compartment body A and which can change its position between a closed position (T) that closes the opening K and an open position (H) that opens the opening K.

[0099] The storage compartment body A and lid B are separated into left zipper C and right zipper D, which are independently positioned between the left and right sides.

[0100] The bag is designed so that by moving the front end of the lid B from bottom to top, the lid B changes position from closed (T) to open (H), and the left and right zippers C and D automatically transition from closed (X) to open (Y).

[0101] Therefore, this embodiment provides a bag with a suitable configuration that not only ensures that the space between the storage compartment body A and the lid B is adequately closed in the closed position (T), but also allows for the lid B to be opened smoothly and quickly.

[0102] In other words, the user can automatically switch the left and right zippers C and D from the closed state (X) to the open state (Y) simply by opening the lid B, that is, by moving the tip of the lid B from bottom to top, without touching the left slider c3 and right slider d3 of the left and right zippers C and D.

[0103] Therefore, even when the lid B is in the closed position (T), and the user closes the left and right zippers C and D to prevent foreign matter such as sand or rainwater from entering the storage compartment A, the user can smoothly change the lid B from the closed position (T) to the open position (H).

[0104] The lid B is composed of a flexible, sheet-like lid body portion 5.

[0105] Therefore, the lid B has a suitable configuration that makes it easy to operate the left slider c3 and the right slider d3 of the left and right fasteners C and D when changing the position from the closed position (T) to the open position (H).

[0106] In the closed state (X), the left and right fasteners C and D are positioned to extend in a partially arc shape when viewed from the side.

[0107] Therefore, the left and right zippers C and D are configured in a way that facilitates smooth operation of the left slider c3 and the right slider d3 as the lid B changes position from closed (T) to open (H).

[0108] A fastener E is provided between the front end of the lid B and the storage compartment body A to lock the lid B in the closed position (T).

[0109] Therefore, the lid B is preferably held in a closed position (T) by the fastener E.

[0110] The fastener E is configured to pull the lid B downwards, thereby releasing the lock.

[0111] Therefore, this design is preferable in that it prevents the lid B from unintentionally coming off the closed position (T).

[0112] The main storage compartment A is equipped with shoulder straps L.

[0113] Therefore, users can easily carry the bag by slinging it over their back and using the L-shaped strap.

[0114] An extended storage unit F is provided at the lower part of the main storage unit A, which is configured to allow the unit to change its orientation between a non-use orientation (G) in which a predetermined storage space sk is not formed and a use orientation (I) in which a predetermined storage space sk is formed.

[0115] Therefore, the user can suitably choose whether or not to use the expandable storage compartment F, and when the expandable storage compartment F is not used, the entire bag can be made into a compact form.

[0116] Furthermore, when a schoolchild uses the bag, they can flexibly choose whether to use the expandable storage compartment F in an unused position (G) or an used position (I) according to their daily activities. For example, a schoolchild might use the expandable storage compartment F in the used position (I) on Mondays and Fridays to carry bulky items such as shoes, and use the bag in a compact form by keeping the expandable storage compartment F in an unused position (G) on other weekdays.

[0117] The left zipper C is composed of one left zipper component c1 disposed on the left side of the storage compartment body A, the other left zipper component c2 disposed on the left side of the lid B, and a left slider c3 interposed between the one and the other left zipper components c1 and c2 to connect or disconnect the one and the other left zipper components c1 and c2 to take a closed state (X) or an open state (Y). The right zipper D is composed of one right zipper component d1 disposed on the right side of the storage compartment body A, the other right zipper component d2 disposed on the right side of the lid B, and a right slider d3 interposed between the one and the other right zipper components d1 and d2 to connect and disconnect the one and the other right zipper components d1 and d2 to take a closed state (X) or an open state (Y).

[0118] Therefore, the left fastener C is configured in a way that allows the left slider c3 to bring one and the other left fastener components c1 and c2 into and out of contact, and the right fastener D is configured in a way that allows the right slider d3 to bring one and the other right fastener components d1 and d2 into and out of contact.

[0119] The storage compartment body A comprises a bottom wall 1, left and right side walls 2 erected on the left and right side edges of the bottom wall 1, and a front wall 3 and a rear wall 4 arranged to connect the front and rear edges of the left and right side walls 2, with an opening K formed by the upper edges of the left and right side walls 2, the front wall 3, and the rear wall 4.

[0120] Therefore, the storage unit body A has a suitable configuration having a storage space sp surrounded by a bottom wall 1, left and right side walls 2, a front wall 3, and a rear wall 4.

[0121] The lid B comprises a flexible, sheet-like lid body portion 5 and a protruding piece portion 6 that extends from the lid body portion 5.

[0122] Therefore, the user can easily change the position of the lid B between a closed position (T) and an open position (H) by pinching the protruding part 6 with their fingers.

[0123] However, the present invention is not limited to the embodiments described in detail above.

[0124] It goes without saying that bags are not limited to school backpacks.

[0125] The storage unit itself only needs to have an opening at the top, and its specific shape can be set as appropriate.

[0126] The lid can be configured to change between a closed position that closes the opening and an open position that opens the opening. For example, the lid may have side walls on the left and right of a curved top wall, or it may have side walls that connect to the left and right of the top wall, front wall, and rear wall.

[0127] The lid may be mainly composed of a flexible, sheet-like lid body. For example, the lid may not have any protruding parts.

[0128] The left and right fasteners in the closed state may be positioned to extend at an angle with respect to a virtual horizontal line or a virtual vertical line.

[0129] The fastener only needs to be configured so that one part can be brought into contact with the other and separate from it, and the specific configuration can be any as appropriate.

[0130] For example, the fastener may be configured to release the lock by pulling the lid upwards.

[0131] The fastener may be provided between the leading edge of the lid and the main body of the storage compartment. For example, the fastener may be provided between the leading edge of the lid and the main body of the storage compartment. In other words, one side of the fastener may not be provided on the protruding part of the lid.

[0132] The main storage compartment may not have a shoulder strap.

[0133] The main storage unit may be configured without an expansion storage unit located at its lower part.

[0134] Furthermore, the specific configuration of each part is not limited to the above embodiments, and various modifications are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0135] A...Main storage unit B…Lid body C... Left zipper D...Right zipper K...Opening E... Fastener F...Expandable storage compartment (T)...Closed posture (H)...Open posture (X)... Closed state (Y)...Open state

Claims

1. A bag comprising a storage compartment body having an opening at the top, and a lid whose base end is connected to the storage compartment body and which can change its position between a closed position that closes the opening and an open position that opens the opening, The storage compartment body and the lid are equipped with separate, independent zippers on the left and right sides. A bag configured such that by moving the front end of the lid from bottom to top, the lid changes its position from the closed position to the open position, and the left and right zippers automatically transition from the closed state to the open state.

2. The bag according to claim 1, wherein the lid is composed of a flexible, sheet-like lid body portion.

3. The bag according to claim 1, wherein the left and right zippers in the closed state are arranged to extend in a partially arc shape in a side view, or to extend at an inclination with respect to a virtual horizontal line or a virtual vertical line.

4. The bag according to claim 1, wherein a fastener for locking the lid in the closed position is provided between the tip portion of the lid and the storage compartment body.

5. The bag according to claim 4, wherein the fastener is configured to release the lock by pulling the lid upward or downward.

6. The bag according to claim 1, wherein the storage compartment body is provided with a shoulder strap.

7. The bag according to claim 1, wherein an expandable storage section is provided at the lower part of the main storage section body, configured to allow the posture to be changed between a non-use posture in which a predetermined storage space is not formed and a use posture in which a predetermined storage space is formed.

8. The left zipper is composed of one left zipper component disposed on the left side of the storage compartment body, another left zipper component disposed on the left side of the lid, and a left slider interposed between the one and the other left zipper component to connect or disconnect the one and the other left zipper component in order to take the closed or open state. The bag according to claim 1, wherein the right zipper comprises one right zipper component disposed on the right side of the storage compartment body, another right zipper component disposed on the right side of the lid, and a right slider interposed between the one and the other right zipper component for connecting and disconnecting the one and the other right zipper component to take the closed state or the open state.

9. The bag according to claim 1, wherein the storage compartment body comprises a bottom wall, left and right side walls erected on the left and right side edges of the bottom wall, and a front wall and a rear wall arranged to connect the front and rear edges of the left and right side walls, and the opening is formed by the upper edges of the left and right side walls, the front wall, and the rear wall.

10. The bag according to claim 1, wherein the lid comprises a flexible, sheet-like lid body and a protruding piece provided on the lid body.

Images