JP7855082B2 - bag - Google Patents

Description

This invention relates to a bag for storing items.

Conventionally, tote bags with an open top and handles are known (see, for example, Patent Document 1). With this type of tote bag, the user can easily put in and take out items because they can always access the interior (storage space) directly.

Japanese Patent Publication No. 2019-180694

However, with conventional tote bags, the top is always open, making the contents susceptible to external factors such as getting wet in the rain or dirty with dust. While it might be possible to store items in a sealed case inside the tote bag to protect them from external factors, this would be cumbersome when putting items into and taking them out of the case.

The object of the present invention is to provide a bag that can protect the contents while reducing the effort required when storing and retrieving the contents.

A bag according to one aspect of the present invention comprises a bag body with an opening at the top, and a storage compartment provided inside the bag body, wherein the storage compartment comprises a storage compartment body having an opening, and a lid portion provided overlapping the storage compartment body and capable of opening and closing the opening, and the lid portion comprises a posture-maintaining portion that maintains the opening in a closed position.

A bag according to another aspect of the present invention comprises a bag body with an opening at the top, and a storage compartment provided inside the bag body, wherein the storage compartment comprises a storage compartment body including a front part, a rear part, and an opening, and a lid part that can open and close the opening, and elastic members are provided on the front part and the rear part, respectively, to maintain the opening in a closed position.

According to the present invention, it is possible to provide a bag that protects the contents while reducing the effort required when storing and retrieving the contents.

Figure 1 is an external perspective view showing the overall configuration of a bag according to Embodiment 1 of the present invention. Figure 2 is a front view of a bag according to Embodiment 1 of the present invention. Figure 3 is a rear view of a bag according to Embodiment 1 of the present invention. Figure 4 is a left side view of a bag according to Embodiment 1 of the present invention. Figure 5 is a right side view of a bag according to Embodiment 1 of the present invention. Figure 6 is a plan view of a bag according to Embodiment 1 of the present invention. Figure 7 is a bottom view of a bag according to Embodiment 1 of the present invention. Figure 8 is a cross-sectional view taken along line A-A in Figure 6. Figure 9 is a cross-sectional view taken along line B-B in Figure 6. Figure 10 is a cross-sectional view taken along line C-C in Figure 6. Figure 11 is an enlarged view of section A1 in Figure 8. Figure 12 is an enlarged view of section A2 in Figure 9. Figure 13 is a perspective view showing an example of how the bag according to Embodiment 1 of the present invention is used. Figure 14 is a perspective view showing an example of how the bag according to Embodiment 1 of the present invention is used. Figure 15 is an enlarged view of section A3 in Figure 14. Figure 16 shows an example of the storage state of a bag according to Embodiment 1 of the present invention. Figure 17 is a cross-sectional view taken along line A-A in Figure 6 of a bag according to Embodiment 2 of the present invention. Figure 18 is an enlarged view of section B1 of Figure 17. Figure 19 is a perspective view showing an example of how the bag according to Embodiment 2 of the present invention is used. Figure 20 is an enlarged view of section B3 of Figure 19. Figure 21 shows another configuration of the bag according to Embodiment 2 of the present invention. Figure 22 shows another configuration of the bag according to Embodiment 2 of the present invention.

The embodiments of the present invention will be described below with reference to the attached drawings. Note that the following embodiments are merely examples of the present invention and do not limit the technical scope of the present invention.

[Bag 10]
The bag 10 according to this embodiment is an example of a bag of the present invention. The bags of the present invention include various types of bags, such as tote bags, handbags, and bags without handles. In this embodiment, a shoulder-type (shoulder-carryable) tote bag with a handle (shoulder strap) will be used as an example for explanation.

[Embodiment 1]
Figure 1 is an external perspective view showing the overall configuration of the bag 10 according to Embodiment 1. Figure 2 is a front view of the bag 10, Figure 3 is a rear view of the bag 10, Figure 4 is a left side view of the bag 10, Figure 5 is a right side view of the bag 10, Figure 6 is a top view of the bag 10, and Figure 7 is a bottom view of the bag 10.

The bag 10 comprises a bag body 1 and a handle 2. The bag body 1 comprises a bottom 13, a front part 11 that rises upward from the bottom 13 on the front side, and a rear part 12 that rises upward from the bottom 13 on the rear side, and has an opening 14 (see Figures 1 and 6) at the top.

The bag body 1 is formed into a bag shape by, for example, folding a single long, rectangular piece of fabric in half and sewing the side edges together. In Figures 1, 4, and 5, reference numeral 1L indicates the left side seam where the front side (corresponding to the front part 11) and the back side (corresponding to the rear part 12) of the fabric are sewn together, and reference numeral 1R indicates the right side seam where the front side (corresponding to the front part 11) and the back side (corresponding to the rear part 12) of the fabric are sewn together. Various materials such as natural fibers, chemical fibers, and synthetic fibers can be used for the fabric of the bag body 1.

The bottom portion 13 is provided with a rectangular gusset having a predetermined width in the front-to-back direction. The gusset is formed, for example, by folding and sewing the side edges of the central portion of the fabric (see Figure 7). The bag 10 is able to stand on its own due to the gusset. The method of manufacturing the bag body 1 is not limited to the above method, and may also be done by joining together multiple pieces of fabric, for example. The bottom portion 13 has a width of approximately 300 mm in the left-to-right direction and a width of approximately 100 mm in the front-to-back direction. Note that the size of the bottom portion 13 is not limited to this and can be appropriately determined according to the overall size of the bag 10.

Openings 14 are formed at the upper ends of the front 11 and rear 12, allowing access to the storage space inside the bag body 1 from above the bag 10 through the openings 14. Furthermore, reinforcing portions 1a (see Figure 1) are provided around the entire circumference of the inner upper ends of the front 11 and rear 12. The reinforcing portions 1a are formed by sewing a separate piece of fabric, distinct from the single piece of fabric constituting the front 11 and rear 12, to the inner periphery of the front 11 and rear 12. Alternatively, the reinforcing portions 1a may be formed by folding and sewing the upper end of the single piece of fabric constituting the front 11 and rear 12.

Storage pockets 15 and 16 are provided on the front surface (exterior surface) of the front section 11. For example, the storage pockets 15 and 16 are fixed (sewn) to the exterior surface of the front section 11 by sewing. A lid portion 151 is provided at the top of the storage pocket 15, which can open and close the opening of the storage pocket 15. The lid portion 151 is fixed to the front section 11 by sewing only its upper end. The lid portion 151 is also provided so as to overlap the upper part of the storage pocket body so that a portion of its lower end covers the opening. The storage pockets 15 and 16 are positioned below the bag body 1 so that their respective lower ends are approximately aligned with the lower end of the bag body 1. The storage pockets 15 and 16 are also positioned below the bag body 1 so as to be approximately half the height of the bag body 1. The combined width of the storage pockets 15 and 16 is approximately the same as the width of the front section 11 (bottom section 13). With the above configuration of storage pockets 15 and 16, the center of gravity of the bag body 1 is lowered, and the balance in the left-right direction is easily maintained. Furthermore, the front part 11 is reinforced, which stabilizes the self-standing posture of the bag 10.

The external dimensions (width and height) of storage pockets 15 and 16 are approximately the same. For example, the upper end of the lid 151 of storage pocket 15 and the upper end of the opening of storage pocket 16 are at approximately the same height (see Figure 2). Therefore, the upper end of the opening of the storage pocket body of storage pocket 15 is lower than the upper end of the opening of storage pocket 16 (see Figure 1). Matching the heights of storage pockets 15 and 16 creates a sense of unity throughout the bag 10. The width of each storage pocket 15 and 16 is approximately 150 mm, the height is approximately 210 mm, and the height of the lid 151 is approximately 75 mm. Note that the size of storage pockets 15 and 16 is not limited to these dimensions and can be appropriately determined according to the overall size of the bag 10.

In other embodiments, the storage pockets 15 and 16 may have different widths. Also, the storage pocket 16 may be provided with a lid similar to the lid 151. Furthermore, the lid 151 may be omitted from the storage pocket 15. The storage pockets 15 and 16 may be provided on the rear section 12, or on both the front section 11 and the rear section 12. The storage pockets 15 and 16 can store, for example, small items.

There is one handle 2 on each side in the front and back directions. Specifically, the front handle 2 is fixed by sewing together both ends of the handle 2, which are inserted between the upper end of the front part 11 and the reinforcing part 1a, and the rear handle 2 is fixed by sewing together both ends of the handle 2, which are inserted between the upper end of the rear part 12 and the reinforcing part 1a. The handle 2 has a width of approximately 25 mm, and a length that allows it to be carried on the shoulder, for example, the length (height) from the upper end of the bag body 1 to the upper end of the handle 2 is approximately 270 mm. The size of the handle 2 is not limited to this. Also, the fabric of the handle 2 can be made from various materials such as natural fibers, chemical fibers, and synthetic fibers, similar to the bag body 1, and is not particularly limited.

A storage compartment 17 is provided inside the main body of the bag 1 (see Figures 1 and 6). The storage compartment 17 is fixed to the main body of the bag 1 and has an opening that allows items to be put in and taken out. The storage compartment 17 can store items such as a PC (laptop, tablet, etc.), documents, and mail. However, the items that can be stored in the storage compartment 17 are not limited to these. The specific configuration of the storage compartment 17 will be described later.

Furthermore, the bag body 1 is provided with a drink holder 18 capable of accommodating drink containers such as PET bottles and thermoses (see Figures 1 and 6). The drink holder 18 is an example of a storage compartment of the present invention. The storage compartment of the present invention is not limited to the drink holder 18, and may be configured to accommodate, for example, a folding umbrella. One side end of the drink holder 18 is fixed to the rear part 12 together with the storage compartment 17, and the other side end is fixed to the stitched part 1R, thereby forming a cylindrical storage space (see Figures 1 and 6).

[Storage section 17]
Next, the specific configuration of the storage section 17 will be described. Figure 8 is a cross-sectional view taken along line A-A in Figure 6, Figure 9 is a cross-sectional view taken along line B-B in Figure 6, and Figure 10 is a cross-sectional view taken along line C-C in Figure 6. Figure 11 is an enlarged view of the A1 portion of Figure 8, and Figure 12 is an enlarged view of the A2 portion of Figure 9.

The storage compartment 17 is fixed by sewing it to the inner surface (inner wall surface) of the rear part 12 inside the bag body 1. For example, as shown in Figure 8, the left end 17a, right end 17b, lower end 17c, and upper end 17d of the storage compartment 17 are each sewn and fixed to the inner surface of the rear part 12.

The storage section 17 comprises a storage section body 170 having an opening 17s (see Figure 12) and a storage space, and a lid 173 that overlaps the storage section body 170 and can open and close the opening 17s. The storage section body 170 comprises a front section 171 and a rear section 172, with a storage space formed between the front section 171 and the rear section 172. The front section 171 of the storage section 17 is composed of a left end 171a, a right end 171b, a lower end 171c, and an upper end 171d (see Figure 12), with the left end 171a, the right end 171b, and the lower end 171c being fixed to the rear section 12 of the bag body 1. The rear portion 172 of the storage section 17 is composed of a left end (not shown), a right end (not shown), a lower end (corresponding to the lower end 17c of the storage section 17), and an upper end (corresponding to the upper end 17d of the storage section 17), with the left end, right end, lower end, and upper end being fixed to the rear portion 12 of the bag body 1. As shown in Figure 12, the upper end 171d of the front portion 171 of the storage section 17 is not fixed to the rear portion 12 of the bag body 1, etc., and as a result, an opening 17s is formed at the upper end 171d between the front portion 171 and the rear portion 172.

The lid portion 173 has a left end 173a, a right end 173b, a lower end 173c, and an upper end (corresponding to the upper end 17d of the storage compartment 17) (see Figure 8), and the left end 173a, the right end 173b, and the upper end are fixed to the rear 12 of the bag body 1. As shown in Figure 12, the lower end 173c of the lid portion 173 is not fixed to the rear 12 of the bag body 1. In other words, the lid portion 173 has a configuration in which the left side, right side, and upper side are fixed to the bag body 1, and only the lower side is not fixed to any of them. This makes it possible to access the storage space of the storage compartment 17 by lifting the lower end 173c of the lid portion 173 from bottom to top to expose the opening 17s.

Furthermore, as shown in Figure 12, a cushion C1 is provided in the front section 171, and a cushion C2 is provided in the rear section 172. Cushions C1 and C2 are provided over substantially the entire surface of the front section 171 and the rear section 172, respectively. Cushions C1 and C2 may also be inserted into the interior of the front section 171 and the rear section 172, or they may be fixed to the inner wall surfaces on the storage space side of the front section 171 and the rear section 172. Cushions C1 and C2 have the function of protecting the stored items G1 stored in the storage section 17. Cushions C1 and C2 are elastic materials (cushioning materials) such as urethane, sponge, and rubber, and are examples of elastic members of the present invention.

Next, specific examples of how to manufacture the storage compartment 17 and how to fix it to the bag body 1 will be described. Note that the method for manufacturing and fixing the storage compartment 17 is not limited to the methods described below, and other methods may be used.

The storage section 17 is formed into a bag shape by, for example, folding a single piece of fabric and sewing the side edges together. Specifically, a single vertically elongated piece of fabric is folded in half at the center (corresponding to the lower end 17c), and a predetermined width portion of one end (corresponding to the rear 172 side) (corresponding to the lid 173) is folded over to the other end (corresponding to the front 171 side). At this time, the folded end (corresponding to the lower end 173c of the lid 173) is folded over to overlap the end (corresponding to the upper end 171d of the front 171) on the other side (corresponding to the front 171 side). The side edges of the folded fabric are then joined together and sewn to the rear 12 of the bag body 1 together with the fixing parts 17x and 17y (reinforcement parts) (see Figure 8) to secure it. Furthermore, the central portion of the fabric (corresponding to the lower end 17c) is secured to the rear 12 of the bag body 1 by sewing it together with the fixing portion 17x (reinforcement portion) (see Figure 8). Also, the upper portion of the fabric (corresponding to the upper end 17d) is secured to the rear 12 of the bag body 1 by sewing it together.

As a result, the left end 171a of the front part 171 of the storage section 17, the left end (not shown) of the rear part 172, and the left end 173a of the lid part 173 are fixed to each other by fixing part 17x at the rear part 12 of the bag body 1; the right end 171b of the front part 171 of the storage section 17, the right end (not shown) of the rear part 172, and the right end 173b of the lid part 173 are fixed to each other by fixing part 17y at the rear part 12 of the bag body 1; and the lower end 171c of the front part 171 of the storage section 17 and the lower end (not shown) of the rear part 172 are fixed to each other by fixing part 17x at the rear part 12 of the bag body 1 (see Figure 8).

Furthermore, the lid portion 173 is fixed such that a portion of its lower part overlaps a portion of the upper part of the front portion 171. The upper end of the lid portion 173 is fixed to the upper end 17d of the storage portion 17, the left end 173a is fixed to the left end 17a of the storage portion 17, the right end 173b is fixed to the right end 17b of the storage portion 17, and the lower end 173c is not fixed to the storage portion 17. For example, as shown in Figure 11, if the front portion 171 has a height L1 (internal dimension) and the lid portion 173 has a height L2, the lid portion 173 and the front portion 171 overlap in the front-to-back direction by a height L3. Also, the left end 173a and the right end 173b of the lid portion 173 (the whole thing corresponding to height L2) are fixed by fixing portions 17x and 17y to the portion of the upper part of the rear portion 172 corresponding to height L2 and the portion of the upper part of the front portion 171 corresponding to height L3. Furthermore, the left end 173a and the right end 173b of the lid portion 173 are positioned and fixed in front of the front portion 171 (towards the storage space of the bag body 1). The height L2 is, for example, approximately 45 mm, and the height L3 is, for example, approximately 15 mm. However, the heights L2 and L3 are not limited to these.

According to the above configuration, as shown in Figure 12, in the normal state of the storage compartment 17 (for example, when the bag 10 is slung over the shoulder or held in the hand), the lid portion 173 is positioned in front of the front portion 171 and can cover the opening 17s. As a result, the storage space of the storage compartment 17 is not exposed to the outside air, thus preventing the stored items G1 from getting wet in the rain or soiled with dust.

Furthermore, with the above configuration, as shown in Figure 11, the left end 173a and the right end 173b of the lid 173 are fixed to the bag body 1 together with the front part 171, overlapping with the front part 171. Therefore, in the normal state of the storage compartment 17, it is possible to maintain the opening 17s in a closed position (closed position).

Thus, the lid portion 173 is equipped with a posture-maintaining section that keeps the opening 17s in a closed position. Here, the left end portion 173a and the right end portion 173b, which partially overlap the front portion 171, correspond to the posture-maintaining section. Furthermore, the cushions C1 and C2 have the function of maintaining the self-supporting position of the front portion 171 and the rear portion 172 by elastic force, thereby making it easier to maintain the closed position of the opening 17s. In other words, the cushions C1 and C2 correspond to the posture-maintaining section. Thus, the cushions C1 and C2 have the function of protecting the stored items and the function of maintaining the opening 17s in a closed position.

The storage compartment 17 has, for example, a main body height L0 (internal dimension) of approximately 350 mm, a lid height L2 of approximately 40 mm, a front height L1 (internal dimension) of approximately 325 mm, a height L3 (overlap amount) of approximately 15 mm between the overlapping portion of the lid 173 and the front 171, and a width of approximately 290 mm. However, the size of the storage compartment 17 is not limited to this and can be appropriately determined according to the overall size of the bag 10.

In addition to the function of maintaining the opening 17s in a closed position (position maintenance function), the storage compartment 17 is also equipped with an opening and closing function for opening and closing the opening 17s. Specific examples of the opening and closing functions of the opening 17s (opening and closing functions 1 to 4) are described below.

[Opening and closing function of opening 17s 1]
Figures 13 and 14 show examples of how the bag 10 is used. Specifically, Figures 13 and 14 show the bag 10 with an item G1 (for example, a laptop computer) stored in its storage compartment 17. Figure 13 shows the user holding the bag 10, and Figure 14 shows the user opening the bag 10 14 wide open. Figure 15 shows an enlarged view of section A3 in Figure 14.

As shown in Figure 13, for example, when a user places an item G1 in the storage compartment 17 and places the handle 2 on their shoulder or grips it, the front 11 and rear 12 of the bag body 1 move closer together, and the opening 14 narrows in the front-to-back direction (D1 and D2 directions). As a result, the sides of the bag body 1 are pushed out in the left-to-right direction (D3 and D4 directions), pulling the front 171, rear 172, and lid 173 of the storage compartment 17 in the left-to-right direction. When the lid 173 is pulled in the left-to-right direction, the lower part (overlapping portion) of the lid 173 comes into close contact with the front 171, so the opening 17s is in a closed position. In this way, when a user is holding the bag 10, the opening 17s of the storage compartment 17 is maintained in a closed position.

In contrast, as shown in Figure 14, for example, when a user opens the bag body 1 in the front-to-back direction (directions D5 and D6) with items G1 stored in the storage compartment 17, the front 11 and rear 12 of the bag body 1 move away from each other, and the opening 14 widens in the front-to-back direction. As a result, the sides of the bag body 1 are pushed inward from the left-to-right direction (directions D7 and D8), causing the front 171, rear 172, and lid 173 of the storage compartment 17 to be pushed inward from the left-to-right direction. When the lid 173 is pulled in the D5 direction and pushed from the D7 and D8 directions, the central part of the lid 173 bends in the D5 direction, and the part of the lid 173 that overlaps with the front 171 (overlapping part) detaches from the front 171, exposing the opening 17s (open position). In this way, when a user opens the bag 10, the opening 17s of the storage compartment 17 changes to an open position.

When a force in the D5 direction acts on the bag body 1, the rear portion 172 and lid portion 173 of the storage section 17, which are fixed to the rear portion 12 (see Figure 12) of the bag body 1, are pulled in the D5 direction. However, the front portion 171 of the storage section 17 is not pulled in the D5 direction because its upper end portion 171d is not fixed to the rear portion 12 (or rear portion 172) of the bag body 1. Therefore, as shown in Figure 14, when the bag body 1 is opened, the opening 17s changes to an open position. In particular, when the storage section 17 contains stored items G1, the storage space is easily maintained by the stored items G1, so the front portion 171 of the storage section 17 is not pulled or bent in the D5 direction. Therefore, as shown in Figure 14, when the bag body 1 is opened, the opening 17s changes to an open position more easily.

When a user picks up the bag from the open position shown in Figure 14 (for example, by placing the handle 2 over their shoulder), the opening 17s changes to the closed position as shown in Figure 13. Specifically, as shown in Figure 15, when the opening 17s is in the open position, only the ends of the front part 171 and the lid part 173 overlap, so opposing forces are applied to the front part 171 and the lid part 173 in the overlapping portion R1. That is, a force in the D5 direction is applied to the overlapping portion R1 of the front part 171 from the lid part 173, and a force in the D6 direction is applied to the overlapping portion R1 of the lid part 173 from the front part 171. In this state, for example, when a user places the handle 2 over their shoulder, the bag body 1 is pushed in the D1 and D2 directions as shown in Figure 13, and the force in the overlapping portion R1 acts, pushing the entire upper end 171d of the front part 171 inward into the lid part 173. As a result, the opening 17s changes from the open position to the closed position.

Thus, the storage compartment 17 changes to a closed position when the user closes the opening 14 of the bag 10 (see Figure 13), and changes to an open position when the user opens the opening 14 of the bag 10 (see Figure 14). The storage compartment 17 is equipped with the function to change between an open position and a closed position in response to the user's opening and closing operation of the bag 10. Therefore, the user can easily put items in and take them out of the storage compartment 17.

[Opening and closing function of opening 17s 2]
The storage compartment 17 is equipped with cushions C1 and C2 on its front 171 and rear 172, respectively. With this configuration, for example, when a user opens the opening 14 of the bag 10 (see Figure 14), the rear 172 is pulled in the direction D5, but the front 171 is not fixed to the rear 12 of the bag body 1, and the elastic force of cushion C1 acts on it, causing the front 171 to try to maintain a flat state. As a result, the opening 17s is more likely to change to an open position.

Furthermore, for example, when the user opens the opening 14 of the bag 10 (see Figure 14), a force acts on the cushions C1 and C2 to return them to their original state (flat state) due to their own elasticity. Therefore, when the user closes the opening 14 of the bag 10 (see Figure 13), the elasticity of the cushions C1 and C2 makes it easier for the front part 171 and the rear part 172 to return to their normal flat state. This makes it easier for the opening 17s to change from an open position to a closed position. Thus, by providing cushions C1 and C2, it becomes easier to change the position of the bag 10 between an open position and a closed position in response to the user's opening and closing operation. Therefore, it becomes easier to put in and take out stored items.

[Opening and closing function of opening 17s 3]
As shown in Figure 8, the bag 10 has a configuration in which the width W1 (width in the left-right direction) of the opening 17s of the storage compartment 17 is wider than the distance W2 between the attachment points of the handle 2 on the bag body 1 (W1 > W2). With this configuration, for example as shown in Figure 14, when a user opens the opening 14 of the bag 10, a force is applied in the direction D5 to the attachment points of the handle 2 on the rear part 12 of the bag body 1. As the point of application of this force is located inside (towards the center) of the width W1 of the opening 17s, the force is concentrated on the central side of the width of the lid 173 of the storage compartment 17. Therefore, the central side of the lid 173 on which the force is applied is pulled significantly in the direction D5, making it easier to change to an open position.

In contrast, if, for example, the width W1 of the opening 17s is narrower than the distance W2 between the attachment points of the handle 2 (W1 < W2), the force will act outward from the width of the lid 173. Therefore, when the user opens the opening 14 of the bag 10, the entire lid 173 will be pulled in the D5 direction, making it difficult to change to an open position.

Therefore, by adopting the above configuration (W1 > W2), it becomes easier to change the open and closed positions of the bag 10 in response to the user's opening and closing operation. This makes it easier to put in and take out stored items. In the first embodiment, the bag 10 has, for example, a W1 of approximately 290 mm and a W2 of approximately 160 mm. W1 and W2 are not limited to these values and can be appropriately determined according to the overall size of the bag 10.

[Opening and closing function of opening 17s 4]
The bag 10 has a configuration in which the lid portion 173 of the storage compartment 17 is located above the bag body 1. For example, as shown in Figures 11 and 12, the lid portion 173 is positioned close to the reinforcing portion 1a provided at the upper end of the bag body 1. With this configuration, for example as shown in Figure 14, when a user opens the opening 14 of the bag 10, the upper end of the bag body 1 widens considerably. That is, the opening width in the front-to-back direction of the bag body 1 increases from bottom to top. For this reason, the force pulling in the D5 direction is greater when the lid portion 173 is positioned above than when it is positioned below. Therefore, with the above configuration, compared to a configuration in which the lid portion 173 is located below the bag body 1, the opening 14 of the bag 10 is more easily opened when a user opens it. Similarly, when a user closes the opening 14 of the bag 10, the lid portion 173 is pushed with a large force in the D1 direction (see Figure 13), making it easier for the opening 17s to change to a closed position. Therefore, by adopting the above configuration, it becomes easier to change the posture of the bag 10 between open and closed positions in response to the user's opening and closing actions. As a result, it becomes easier to put in and take out stored items.

In the bag 10 shown in Figure 1, etc., the storage compartment 17 is equipped with all of the opening and closing functions 1 to 4 of the opening 17s described above, but the bag of the present invention is not limited to this. In the bag of the present invention, the storage compartment 17 may be configured to be equipped with one or more of the opening and closing functions 1 to 4.

[Effects of Embodiment 1]
The following describes the various components of the bag 10 according to the above-described embodiment 1 and the effects achieved by each component.

The bag 10 according to Embodiment 1 comprises a bag body 1 (bag body) whose top can be opened, and a storage compartment 17 provided inside the bag body 1. The storage compartment 17 comprises a storage compartment body 170 having an opening 17s, and a lid portion 173 provided overlapping the storage compartment body 170 and capable of opening and closing the opening 17s. The lid portion 173 also includes a posture maintenance portion that maintains the opening 17s in a closed position.

According to the above configuration, the opening 17s of the storage space can be covered by the lid 173, and the opening 17s can be kept closed, making it less susceptible to external factors such as rain or dust. Furthermore, the lid 173 is provided to overlap the opening 17s so that it can be opened and closed, and is not configured to fix the opening 17s in a sealed state, so it does not require any effort from the user when putting in or taking out stored items. Thus, it becomes possible to realize a bag 10 that protects stored items while reducing the effort required when storing and taking out stored items. In addition, since there is no need to provide a separate fixing member (zipper, fastener, etc.) to maintain the closed position of the opening 17s, it is possible to simplify the structure of the storage section 17 and reduce costs.

Furthermore, in the bag 10 according to Embodiment 1, the storage compartment body 170 includes a front portion 171 and a rear portion 172, and each of the front portion 171 and the rear portion 172 is equipped with cushions C1 and C2 (elastic members) (see Figure 12).

According to the above configuration, the contents can be protected by the elastic force of cushions C1 and C2. Furthermore, the elastic force of cushions C1 and C2 maintains the self-supporting posture of the front 171 and rear 172, thereby maintaining the closed position of the opening 17s. Moreover, for example, when a user closes the bag 10 from an open state (see Figure 14) (see Figure 13), the elastic force of cushions C1 and C2 makes it easier for the front 171 and rear 172 to return to a flat state, thus facilitating the change to the closed position. Thus, cushions C1 and C2 have the functions of protecting the contents, maintaining the opening 17s in a closed position, and changing the opening 17s from an open position to a closed position.

In addition, in other embodiments, the bag 10 may omit cushions C1 and C2, or may be provided with only one of them.

Furthermore, in the bag 10 according to Embodiment 1, the storage compartment 17 is fixed to the inner surface of the side (front 11 or rear 12) in the longitudinal direction (left-right direction in Figure 1) of the bag body 1. This makes it possible to change the position of the opening 17s by the force of opening and closing operations applied to the side (front 11 and rear 12) of the bag 10 (see Figures 13 and 14). Also, because the storage compartment 17 is fixed to the bag body 1, the storage compartment 17 is stable within the bag body 1, making it easy to put in and take out stored items. It is preferable that the storage compartment 17 be fixed to the rear 12 in order to easily protect the stored items and to make it easier to maintain balance when the bag 10 is carried on the shoulder.

Furthermore, in the bag 10 according to Embodiment 1, the left end 173a (first side end) of the lid 173 and the left end 17a (first side end) of the storage body 170 are fixed to each other, and the right end 173b (second side end) of the lid 173 and the right end 17b (second side end) of the storage body 170 are fixed to each other. For example, as shown in Figures 8 and 11, the entire left end 173a and the entire right end 173b, which correspond to the overall height L2 of the lid 173, are fixed to the storage body 170 (front part 171 and rear part 172) via fixing parts 17x and 17y. Furthermore, the upper end of the lid portion 173 is fixed to the upper end portion 17d of the storage unit body 170, the lid portion 173 is located in front of the front portion 171 of the storage unit body 170, and the lower end portion 173c of the lid portion 173 is not fixed to the storage unit body 170 and is located below the upper end portion 171d of the front portion 171.

According to the above configuration, since the upper end 171d of the front part 171 of the storage part 17 overlaps with the lid part 173 and both ends of the lid part 173 are fixed in place, it becomes easier to maintain the closed position of the opening 17s. That is, the left end 173a and the right end 173b that overlap with the front part 171 function as the posture-maintaining parts.

In the above configuration, the lid portion 173 may be fixed at a position lower than the upper end portion 17d of the storage body 170. In other words, the sewing position (fixing position) of the upper part (upper edge) of the lid portion 173 may be at a position lower than the upper end portion 17d of the storage body 170. For example, the upper end of the lid portion 173 may be located at the upper end portion 17d of the storage body 170, and the sewing position on the upper side of the lid portion 173 may be located between the upper end portion 171d of the front portion 171 and the upper end portion 17d of the storage body 170. That is, the upper part of the lid portion 173 only needs to be fixed (sewn) at a position at least above the upper end portion 171d of the front portion 171.

Furthermore, in the bag 10 according to this embodiment, the lid 173 does not have an elastic member (such as a cushion). With this configuration, for example as shown in Figure 14, when the user opens the opening 14 of the bag 10, the lid 173 can easily bend outward (in the D5 direction) near the center, so that the opening 17s can be easily changed to an open position. In other embodiments, the lid 173 may be equipped with a cushion that has less elastic force (for example, is thinner) than the cushions C1 and C2.

Furthermore, in the bag 10 according to Embodiment 1, a handle 2 is attached to the upper part of the bag body 1, and the storage section 17 is fixed to the surface of the bag body 1 to which the handle 2 is attached (for example, the rear part 12). The width W1 of the opening 17s of the storage section 17 is wider than the spacing W2 between the attachment positions of the handle 2 on the bag body 1 (see Figure 8). With this configuration, as shown in the [Opening and Closing Function of the Opening 17s 3] above, for example, when a user holds the handle 2 and opens the bag 10, a force pulling in the D5 direction acts on the attachment position of the handle 2 on the rear part 12 of the bag body 1, and the central side of the lid 173 corresponding to that attachment position is pulled significantly in the D5 direction, making it easier to change to an open position. Therefore, the opening 17s can be easily changed to an open position.

Furthermore, in the bag 10 according to Embodiment 1, the lid portion 173 is located above the bag body 1. With this configuration, as shown in the [Opening and Closing Function 4 of the Opening 17s] above, when the user opens the opening 14 of the bag 10, the upper end of the bag body 1 spreads widely, and as a result the lid portion 173 is pulled with a large force in the D5 direction (see Figure 14), making it easier for the opening 17s to change to an open position. Also, when the user closes the opening 14 of the bag 10, the lid portion 173 is pushed with a large force in the D1 direction (see Figure 13), making it easier for the opening 17s to change to a closed position. Therefore, it becomes possible to more easily change the position of the bag 10 between an open position and a closed position in response to the user's opening and closing operation.

Furthermore, in the bag 10 according to Embodiment 1, the lid portion 173 may be located above the bag body 1, and the lower end portion 17c of the storage portion body 170 may be located below the bag body 1 (near the bottom portion 13). That is, the storage portion 17 may be formed over the entire height of one side of the bag body 1 (for example, the rear portion 12) (see Figure 8, etc.). Also, the width of the storage portion 17 in the left-right direction may be approximately the same as the width of the bottom portion 13 of the bag body 1 in the left-right direction (see Figure 8, etc.). This prevents the contents G1 from becoming unevenly distributed within the bag 10, thus improving the weight balance.

Furthermore, the bag 10 according to Embodiment 1 may be equipped with a storage section (e.g., a drink holder 18) capable of accommodating contents (e.g., a drink container). Also, one side end of the storage section may be fixed to one side end of the storage section body 170. The other side end of the storage section may be fixed to the stitched portion 1R (see Figure 6) of the bag body 1. This allows for the formation of a cylindrical storage space, making it possible to store, for example, a drink container. Furthermore, this fixing method can increase the strength of the drink holder 18. Additionally, with the bag 10 configured above, as shown in Figure 16, a PC can be stored in the storage section 17 while a drink container is stored in the drink holder 18.

Furthermore, the bag 10 according to Embodiment 1 may be equipped with a storage pocket 19 inside the bag body 1 for storing small items (see Figures 9 and 10). The storage pocket 19 may be fixed, for example, by sewing it to the front part 11 of the bag body 1.

[Other embodiments]
The present invention is not limited to the embodiments described above. Other embodiments of the present invention will be described below.

In another embodiment of the present invention, the bag 10 comprises a bag body 1 (bag body) with an opening at the top, and a storage compartment 17 provided inside the bag body 1. The storage compartment 17 comprises a storage compartment body 170 having a front part 171, a rear part 172, and an opening 17s, and a lid part 173 that can open and close the opening 17s. Furthermore, cushions C1 and C2 (elastic members) are provided on the front part 171 and the rear part 172, respectively, to maintain the opening 17s in a closed position. That is, the storage compartment body 170 is provided with cushions (elastic members) on both sides (front part 171 and rear part 172) that form the storage space, to maintain the opening 17s in a closed position. In the bag 10 with the above configuration, the lid part 173 may be omitted, or the lid part 173 may be made of hook-and-loop fasteners such as Velcro (registered trademark).

According to the above configuration, the contents can be protected by the elastic force of cushions C1 and C2. Furthermore, the elastic force of cushions C1 and C2 maintains the front 171 and rear 172 in an upright position, so even when contents are stored, the opening 17s does not unnecessarily widen and maintains a closed position. Also, there is no need to provide a separate fixing member (such as a zipper) to maintain the closed position of the opening 17s. Therefore, it becomes possible to realize a bag 10 that protects the contents while reducing the effort required when storing and retrieving them. Cushions C1 and C2 function as the posture-maintaining parts.

Furthermore, according to the above configuration, as shown in the [Opening and Closing Function 2 of the Opening 17s] above, for example, when a user opens the opening 14 of the bag 10 (see Figure 14), the rear part 172 is pulled in the direction of D5. However, since the front part 171 is not fixed to the rear part 12 of the bag body 1, and the elastic force of the cushion C1 acts to maintain the front part 171 in a flat state, the opening 17s is more likely to change to an open position.

Furthermore, for example, when the user opens the opening 14 of the bag 10 (see Figure 14), the cushions C1 and C2 are subjected to a force that attempts to return to their original state (flat state) due to their own elastic force. Therefore, when the user closes the opening 14 of the bag 10 (see Figure 13), the front part 171 and the rear part 172 easily return to their normal flat state due to the elastic force of the cushions C1 and C2. In other words, the opening 17s changes more easily from an open position to a closed position. Thus, it becomes possible to more easily change the posture of the bag 10 between an open position and a closed position in response to the user's opening and closing operation.

In addition, in the above configuration, the bag 10 may be equipped with only one of the cushions C1 or C2.

In each of the embodiments described above, the bag 10 is equipped with a handle 2, but in other embodiments, the bag 10 may omit the handle 2. For example, the bag 10 may consist of the bag body 1 described above as a single unit.

Furthermore, the bag according to the present invention may consist of a storage section 17 alone. For example, the bag according to the present invention may consist only of the storage sections 17 according to each of the embodiments described above. Alternatively, the bag according to the present invention may be a bag in which a handle 2 is attached to the storage section 17 according to each of the embodiments described above. In other words, the bag 10 and the storage section 17 are each examples of the bag according to the present invention. When the bag consists of a storage section 17 alone, the bag according to the present invention comprises a storage section body 170 having an opening 17s, and a lid 173 that overlaps the storage section body 170 and can open and close the opening 17s, and the lid 173 is configured to include a posture-maintaining part that maintains the opening 17s in a closed position. In another embodiment, the bag according to the present invention comprises a storage section body 170 including a front part 171, a rear part 172 and an opening 17s, and a lid 173 that can open and close the opening 17s, and is configured to maintain the opening 17s in a closed position by providing a cushion (elastic member) on at least one of the front part 171 and the rear part 172.

Furthermore, in the bag according to the present invention, the rear portion 172 constituting the storage section 17 may be part of the rear portion 12 of the bag body 1. That is, the rear portion 12 of the bag body 1 may also serve as the rear portion of the storage section 17. In this case, the storage section body 170 of the storage section 17 is composed of a front portion 171 and the rear portion 12 of the bag body 1. The front portion 171 is fixed to the rear portion 12 of the bag body 1 by fixing portions 17x and 17y, and the lid portion 173 may be directly fixed to the rear portion 12 of the bag body 1. In the above configuration, the upper part of the lid portion 173 only needs to be fixed (sewn) to the rear portion 12 of the bag body 1 at a position above the upper end portion 171d of the front portion 171.

Furthermore, in the bag according to the present invention, the storage compartment 17 may be detachable from the bag body 1. For example, the storage compartment 17 may be detachable from the inner surface (inner wall surface) of the rear part 12 inside the bag body 1 using hook-and-loop fasteners such as Velcro (registered trademark). Alternatively, for example, the storage compartment 17 may be equipped with a hook at its upper end, and the storage compartment 17 may be attached to the bag body 1 by hooking the hook onto the upper end (reinforcement part 1a) of the bag body 1.

[Embodiment 2]
Embodiment 2 of the present invention will be described below with reference to the drawings. For the sake of convenience, elements having the same function as those shown in Embodiment 1 will be denoted by the same reference numerals, and their descriptions will be omitted. Furthermore, terms defined in Embodiment 1 will be used in this embodiment in accordance with those definitions unless otherwise specified.

Figure 17 is a cross-sectional view of the bag 10 according to Embodiment 2, taken along line A-A in Figure 6. Figure 18 is an enlarged view of portion B1 in Figure 17.

The bag 10 according to Embodiment 2 has a lid 173 with a different shape from the lid 173 of Embodiment 1, but the other configurations are the same as the bag 10 of Embodiment 1. Specifically, as shown in Figure 17, the lid 173 has a lower end portion 173c that is curved so that the center in the left-right direction protrudes downward. For example, the lower end portion 173c is curved downward so that the height La of the lid 173 increases as it approaches the center in the left-right direction from the left end portion 173a and the right end portion 173b, respectively. The left end portion 173a, the right end portion 173b, and the upper end portion of the lid 173 are fixed to the rear portion 12 of the bag body 1, while the lower end portion 173c is not fixed to the rear portion 12 of the bag body 1. In other words, the lid portion 173 has a configuration in which the left side, right side, and top side are fixed to the bag body 1, and only the bottom side is not fixed to any of them. This allows access to the storage space of the storage compartment 17 by lifting the lower end portion 173c of the lid portion 173 upwards to expose the opening 17s (see Figure 12).

Furthermore, as shown in Figure 18, the lid portion 173 is fixed such that a portion of its lower part overlaps a portion of the upper part of the front portion 171 of the storage portion 17. Specifically, the lid portion 173 is fixed such that the amount of overlap with the front portion 171 increases as it approaches the center position in the left-right direction from each of the left end portion 173a and right end portion 173b. Also, the upper end of the lid portion 173 is fixed to the upper end portion 17d of the storage portion 17, the left end portion 173a is fixed to the left end portion 17a of the storage portion 17, the right end portion 173b is fixed to the right end portion 17b of the storage portion 17, and the lower end portion 173c is not fixed to the storage portion 17. For example, as shown in Figure 18, if the front portion 171 has a height L1 (internal dimension) and the lid portion 173 has a maximum height Lb (height at the center position in the left-right direction), the lid portion 173 and the front portion 171 overlap by a height Ld in the front-back direction at the center position. Furthermore, at the left end 173a and the right end 173b, the lid 173 and the front part 171 overlap in the front-to-back direction by a height Lc. That is, the amount of overlap between the lid 173 and the front part 171 increases as it approaches the center position in the left-to-right direction. Also, the left end 173a and the right end 173b of the lid 173 (the whole thing corresponding to height L2) are fixed by fixing parts 17x and 17y to the part of the upper part of the rear part 172 corresponding to height L2 and the part of the upper part of the front part 171 corresponding to height Lc. In addition, the left end 173a and the right end 173b of the lid 173 are positioned and fixed in front of the front part 171 (towards the storage space of the bag body 1).

The height L2 of the left end 173a and the right end 173b are, for example, approximately 45 mm, the maximum height Lb is, for example, approximately 75 mm, the overlap amount Lc of the left end 173a and the right end 173b are, for example, approximately 15 mm, and the overlap amount Ld of the central part (maximum overlap amount) is, for example, approximately 50 mm. However, the height L2, maximum height Lb, overlap amounts Lc and Ld are not limited to these values.

According to the above configuration, similar to Embodiment 1, as shown in Figure 12, in the normal state of the storage compartment 17 (for example, when the bag 10 is slung over the shoulder or held in the hand), the lid portion 173 is positioned in front of the front portion 171 and can cover the opening 17s. As a result, the storage space of the storage compartment 17 is not exposed to the outside air, thus preventing the stored items G1 from getting wet in the rain or soiled with dust.

Furthermore, with the above configuration, as shown in Figure 18, the left end 173a and the right end 173b of the lid 173 are fixed to the bag body 1 together with the front part 171, overlapping with the front part 171. Therefore, in the normal state of the storage compartment 17, it is possible to maintain the opening 17s in a closed position (closed position).

Thus, the lid portion 173 is equipped with a posture-maintaining section that keeps the opening 17s in a closed position. Here, the left end portion 173a and the right end portion 173b, which partially overlap with the front portion 171, correspond to the posture-maintaining section. Furthermore, as the lid portion 173 approaches the center position in the left-right direction, the amount of overlap with the entire 71 increases, so the left-right central portion of the lid portion 173 also functions as the posture-maintaining section. In other words, in Embodiment 2, the entire lid portion 173 corresponds to the posture-maintaining section.

[Opening and closing function of opening 17s]
Figure 19 shows an example of how the bag 10 according to Embodiment 2 can be used. Specifically, Figure 19 shows the bag 10 with an item G1 (for example, a laptop computer) stored in the storage compartment 17. Figure 19 also shows the bag 10 with the opening 14 wide open. Figure 20 shows an enlarged view of portion B3 in Figure 19.

For example, when a user places an item G1 in the storage compartment 17 and places the handle 2 on their shoulder or grips it, the front 11 and rear 12 of the bag body 1 move closer together, as in Embodiment 1 (see Figure 13), and the opening 14 narrows in the front-to-back direction (D1 and D2 directions). As a result, the sides of the bag body 1 are pushed out in the left-to-right direction (D3 and D4 directions), pulling the front 171, rear 172, and lid 173 of the storage compartment 17 in the left-to-right direction. When the lid 173 is pulled in the left-to-right direction, the lower part (overlapping portion) of the lid 173 comes into close contact with the front 171, so the opening 17s is in a closed position. In this way, when a user is holding the bag 10, the opening 17s of the storage compartment 17 is maintained in a closed position.

In contrast, as shown in Figure 19, for example, when a user expands the bag body 1 in the front-to-back direction (D5 and D6 directions) with items G1 stored in the storage compartment 17, the front 11 and rear 12 of the bag body 1 move away from each other, and the opening 14 expands in the front-to-back direction. As a result, the sides of the bag body 1 are pushed inward from the left-to-right direction (D7 and D8 directions), causing the front 171, rear 172, and lid 173 of the storage compartment 17 to be pushed inward from the left-to-right direction. Here, unlike Embodiment 1, the lid portion 173 in Embodiment 2 has a lower end portion 173c that curves downward at the center position in the left-right direction. Therefore, even if the lid portion 173 is pulled in the D5 direction and pushed from the D7 and D8 directions, causing the central portion of the lid portion 173 to bend in the D5 direction, the portion of the lid portion 173 that overlaps with the front portion 171 (overlapping portion R1) is less likely to come off the front portion 171, and the opening 17s remains in a closed position. In this way, even when the user opens the bag 10, the opening 17s of the storage portion 17 is more likely to remain in a closed position (less likely to change to an open position).

As described above, the storage compartment 17 according to Embodiment 2 has a function that allows it to maintain a closed position regardless of the user's opening and closing operation of the bag 10. Therefore, the contents stored in the storage compartment 17 can be reliably protected. Furthermore, since the lid portion 173 is not fixed, with only its lower end portion 173c overlapping the front portion 171, the user can easily put in and take out the contents by rolling up the lower end portion 173c.

As described above, the bag 10 according to Embodiment 1 has a configuration that makes it easy for the user to change the opening 17s to an open position when the user opens the opening 14 of the bag 10 (see Figures 14 and 15), thereby making it easier to put in and take out stored items. The bag 10 according to Embodiment 2 has a configuration that makes it easy for the user to maintain the opening 17s in a closed position when the user opens the opening 14 of the bag 10 (see Figures 19 and 20), thereby providing a more reliable protection for stored items.

In other embodiments of embodiments 1 and 2, the lid portion 173 may be formed of an expandable material, or reinforcing material (such as a cushion) may be provided inside the lid portion 173.

Furthermore, as another embodiment of Embodiment 2, as shown in Figures 21 and 22, a slit 180 may be provided in the front portion 171 of the storage section 17. The slit 180 is formed so that the lower end portion 173c of the lid portion 173 can be inserted into it. For example, after storing items in the storage section 17, the user can insert the lower end portion 173c of the lid portion 173 into the slit 180, making it more difficult for the lid portion 173 to open and allowing the opening 17s to be maintained in a closed position more reliably. The lid portion 173 may have an overall downward-curving shape and may have a rectangular projection in the portion that is inserted into the slit 180.

Furthermore, the shape of the lid portion 173 according to Embodiment 2 is not limited to a curved shape; it may also be a shape in which only the central part in the left-right direction protrudes downward.

The other configurations shown in Embodiment 1 are also applicable to Embodiment 2.

[Notes on the invention]
The following is an overview of the inventions extracted from each of the embodiments described above. Note that the configurations and processing functions described below can be selected and combined as desired.

<Note 1>
The bag body has an opening at the top,
A storage compartment is provided inside the main body of the bag,
Equipped with,
The storage unit comprises a storage unit body having an opening, and a lid portion that overlaps the storage unit body and is capable of opening and closing the opening.
The lid of the bag is equipped with a posture-maintaining mechanism that keeps the opening in a closed position.

<Note 2>
The storage compartment body includes a front section and a rear section,
Each of the aforementioned front and rear portions is provided with an elastic member.
The bag described in Appendix 1.

<Note 3>
The bag body has an opening at the top,
A storage compartment is provided inside the main body of the bag,
Equipped with,
The storage compartment comprises a storage compartment body including a front part, a rear part, and an opening, and a lid part that can open and close the opening.
A bag in which elastic members are provided at the front and rear portions, respectively, to maintain the opening in a closed position.

<Note 4>
The lid portion is provided overlapping the storage portion body.
The bag described in Appendix 3.

<Note 5>
The storage compartment is fixed to the inner surface of the longitudinal side of the bag body.
The bag described in any of the appendices 1 to 3.

<Note 6>
The first side end of the lid and the first side end of the storage unit body are fixed to each other.
The second side end of the lid and the second side end of the storage compartment body are fixed to each other.
The bag described in any of the notes 1 to 5.

<Note 7>
The lid is located in front of the front of the storage compartment body.
The upper part of the lid is fixed at a position above the upper end of the front part of the storage unit body.
The lower end of the lid is not fixed to the storage compartment body and is located below the upper end of the front part.
The bag described in Appendix 6.

<Note 8>
The aforementioned lid portion is further curved such that its central part in the left-right direction protrudes downward.
The bag described in Appendix 7.

<Note 9>
The lid portion does not have the elastic member.
The bag described in any of the notes 1 to 8.

<Note 10>
A handle is attached to the top of the bag body.
The storage compartment is fixed to the surface of the bag body to which the handle is attached.
The width of the opening is wider than the distance between the attachment points of the handle on the bag body.
A bag as described in any of the notes 1 to 9.

<Note 11>
The lid is located above the main body of the bag.
The bag described in any of the notes 1 to 10.

<Note 12>
It is further equipped with a storage section capable of accommodating the contents,
One end of the storage section is fixed to one end of the storage section body.
The bag described in any of the notes 1 to 11.

Claims (16)

The bag body has an opening at the top,
The storage space inside the bag body,
A storage compartment is provided on the inner wall surface of the bag body that forms the storage space,
A first handle is attached to the upper end of the front of the bag body at a predetermined distance from left to right,
A second handle is attached to the upper end of the rear of the bag body at the aforementioned interval in the left-right direction,
Equipped with,
The storage section is provided on the inner wall surface of the front or rear of the main body, and comprises a storage section body having a rear portion on the inner wall surface side and a front portion on the storage space side, with an opening formed between the front and rear portions , and a lid portion that overlaps the upper part of the storage section body and is capable of opening and closing the opening.
The width of the opening in the left-right direction is wider than the distance between the first handle and the second handle,
The aforementioned lid portion is
The system includes a posture maintenance unit capable of maintaining the opening in a closed position ,
When force is applied to the first handle and the second handle in a direction that expands the storage space, the opening is changed to an open position by deforming in accordance with the outward deformation of the rear part.
A bag that, when a force is applied to the first handle and the second handle in the open position in a direction that narrows the storage space, deforms in accordance with the deformation when the rear part returns to a flat state, thereby changing the opening to the closed position . The lid is set to a height such that when force is applied to the first handle and the second handle in a direction that expands the storage space, the opening becomes the open position, and when force is applied to the first handle and the second handle in a direction that narrows the storage space in the open position, the opening becomes the closed position.
The bag according to claim 1. The bag body has an opening at the top,
The storage space inside the bag body,
A storage compartment is provided on the inner wall surface of the bag body that forms the storage space,
A first handle is attached to the upper end of the front of the bag body at a predetermined distance from left to right,
A second handle is attached to the upper end of the rear of the bag body at the aforementioned interval in the left-right direction,
Equipped with,
The storage section is provided on the inner wall surface of the front or rear of the main body, and comprises a storage section body having a rear portion on the inner wall surface side and a front portion on the storage space side, with an opening formed between the front and rear portions, and a lid portion that overlaps the upper part of the storage section body and is capable of opening and closing the opening.
The width of the opening in the left-right direction is wider than the distance between the first handle and the second handle,
The aforementioned lid portion is
The system includes a posture maintenance unit capable of maintaining the opening in a closed position,
A bag having a shape such that the opening is maintained in the closed position even when the first handle and the second handle deform in accordance with the outward deformation of the rear when force is applied to them in a direction that expands the storage space. The lid portion is set to a height such that the opening is maintained in the closed position when force is applied to the first handle and the second handle in a direction that expands the storage space, and when force is applied to the first handle and the second handle in a direction that narrows the storage space.
The bag according to claim 3. Each of the aforementioned front and rear portions is provided with an elastic member.
The bag according to claim 1 or 3 . The storage compartment is fixed to the inner surface of the longitudinal side of the bag body.
The bag according to claim 1 or 3 . The first side end of the lid and the first side end of the storage unit body are fixed to each other.
The second side end of the lid and the second side end of the storage compartment body are fixed to each other.
The bag according to claim 1 or 3 . The lid portion is located in front of the front portion of the storage unit body, on the storage space side.
The upper part of the lid is fixed at a position above the upper end of the front part.
The lower end of the lid is not fixed to the storage unit body and is located below the upper end .
The bag according to claim 7 . The aforementioned lid portion is further curved such that its central part in the left-right direction protrudes downward.
The bag according to claim 3 . The lid portion does not have the elastic member.
The bag according to claim 5 . The lid is located above the main body of the bag.
The bag according to claim 1 or 3 . It is further equipped with a storage section capable of accommodating the contents,
One end of the storage section is fixed to one end of the storage section body.
The bag according to claim 1 or 3 . The lid is configured to open and close the opening while both ends, which have a predetermined height at both ends in the left-right direction, are fixed to the inner wall surface.
The bag according to claim 1 or 3 . The storage compartment is fixed to the surface on the inner wall to which the first handle or the second handle is attached.
The bag according to claim 1 or 3 . The width in the left-right direction that the lid overlaps the storage compartment body is wider than the aforementioned interval .
The bag according to claim 1 or 3 . The width of the storage compartment in the left-right direction is the same as the width of the bottom of the bag body in the left-right direction.
The bag according to claim 1 or 3 .