bag

The bag design addresses the limitations of conventional tote bags and backpacks by allowing dual use and secure content retention, enhancing usability and formality.

JP2026061480APending Publication Date: 2026-04-09宫脇 茂夫
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2026-04-09

AI Technical Summary

Technical Problem

Conventional tote bags cannot be comfortably used as backpacks due to the risk of contents falling out or being stolen, and backpacks are unsuitable for formal settings.

Method used

A bag design with intersecting belt portions that can function as hand or shoulder straps, allowing it to be used as both a tote bag and a backpack, with the belt portions crossing over the top to secure contents when used as a backpack.

Benefits of technology

Enables versatile use as a tote bag or backpack, preventing contents from falling out and theft while providing a stylish, appropriate appearance for different occasions.

✦ Generated by Eureka AI based on patent content.

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  • Figure 2026061480000001_ABST
    Figure 2026061480000001_ABST
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Abstract

This bag, which can be used as both a tote bag and a backpack, prevents items from falling out when used in this way. [Solution] In this invention, the first belt portion 13 and the second belt portion 14 are provided so as to intersect above the upper opening 11 of the bag body 12. When the portion of the first belt portion 13 between the front upper right fastener 18 and the rear upper left fastener 19, and the portion of the second belt portion 14 between the front upper left fastener 21 and the rear upper right fastener 22 are pulled upwards on the bag body 12, they function as a hand strap or shoulder strap. On the other hand, when the portion of the first belt portion 13 between the rear upper left fastener 19 and the rear lower left fastener 20, and the portion of the second belt portion 14 between the rear upper right fastener 22 and the rear lower right fastener 23 are pulled backwards on the bag body 12, they function as a shoulder strap.
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Description

Technical Field

[0001] The present invention relates to a bag that can be used as a handbag or a shoulder bag and can also be used as a backpack.

Background Art

[0002] Conventionally, there are tote bags that are used by being carried by hand or hung on the shoulder, and backpacks that are used by being carried on the back. Tote bags and backpacks are generally used separately according to their respective uses. When a tote bag contains heavy luggage, it cannot be carried on the back, so there is a problem that it is difficult to use. In addition, since a backpack looks casual, there is a problem that it is difficult to use in a business scene.

[0003] Therefore, in recent years, a tote bag that can be carried on the back like a backpack has been proposed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the tote bag described in Patent Document 1 above has a problem that when used as a backpack, the upper opening of the bag is in an open state, so there is a risk of the luggage contained in the bag falling or being stolen.

[0006] The present invention was made to solve the above-mentioned problems, and aims to provide a bag that can be used as a tote bag and a backpack, and that can prevent items stored inside the bag from falling out or being stolen when used as a backpack. [Means for solving the problem]

[0007] To achieve the above objectives, the present invention provides a bag body comprising: a bag body comprising: a cylindrical portion formed by a left side portion and a right side portion arranged opposite to each other on the left and right sides, and a front portion and a rear portion arranged opposite to each other on the front and rear sides; and a bottom portion provided on the cylindrical portion so as to close the lower opening of the cylindrical portion; a first belt portion having one end attached to a front upper right fastener provided on the upper right side of the front portion, and the other end attached to a rear lower left fastener provided on the lower left side of the rear portion via a rear upper left fastener provided on the upper left side of the rear portion; and a front upper left fastener provided on the upper left side of the front portion, and provided on the lower right side of the rear portion via a rear upper right fastener provided on the upper right side of the rear portion. The bag comprises a first belt portion and a second belt portion, the other end of which is attached to a rear lower right fastener, wherein the first belt portion and the second belt portion are arranged to intersect above the upper opening of the bag body, and when the portion of the first belt portion between the front upper right fastener and the rear upper left fastener and the portion of the second belt portion between the front upper left fastener and the rear upper right fastener are pulled upwards on the bag body, they function as a hand strap or shoulder strap, while when the portion of the first belt portion between the rear upper left fastener and the rear lower left fastener and the portion of the second belt portion between the rear upper right fastener and the rear lower right fastener are pulled backwards on the bag body, they function as a shoulder strap.

[0008] In the bag according to the present invention, it is preferable that the front upper right fastener and the rear upper left fastener are formed at an inclination corresponding to the inclination angle of the first belt portion, and the front upper left fastener and the rear upper right fastener are formed at an inclination corresponding to the inclination angle of the second belt portion. [Effects of the Invention]

[0009] According to the present invention, it can be used as both a tote bag and a backpack, and when used as a backpack, it can prevent items stored inside the bag from falling out or being stolen, thus providing various excellent effects. [Brief explanation of the drawing]

[0010] [Figure 1] This is a perspective view showing a bag according to an embodiment of the present invention being used as a backpack. [Figure 2] This is a perspective view showing the bag according to an embodiment of the present invention being used as a tote bag. [Figure 3] This is a front view showing the bag according to an embodiment of the present invention being used as a backpack. [Figure 4] This is a front view showing the bag according to an embodiment of the present invention being used as a tote bag. [Figure 5] This is a rear view showing the bag according to an embodiment of the present invention being used as a backpack. [Figure 6] This is a rear view showing the bag according to an embodiment of the present invention being used as a tote bag. [Figure 7] This is a plan view showing the bag according to an embodiment of the present invention being used as a backpack. [Figure 8] This is a plan view showing the bag according to an embodiment of the present invention being used as a tote bag. [Figure 9] This is a side view showing the bag according to an embodiment of the present invention being used as a backpack. [Figure 10] This is a side view showing the bag according to an embodiment of the present invention being used as a tote bag. [Modes for carrying out the invention]

[0011] The bag 10 according to an embodiment of the present invention will be described in detail below with reference to Figures 1 to 10.

[0012] The bag 10 according to an embodiment of the present invention is made of cloth, leather, or the like and comprises a bag-shaped bag body 12 having an opening 11 on the upper side, and a first belt portion 13 and a second belt portion 14 attached to the outside of the bag body 12.

[0013] The bag body 12 is composed of a cylindrical portion 17 formed by a left side portion 15L and a right side portion 15R arranged opposite each other on the left and right sides, and a front portion 16F and a rear portion 16B arranged opposite each other on the front and back sides, and a bottom portion 30 sewn to the cylindrical portion 17 so as to close the opening on the lower side of the cylindrical portion 17.

[0014] The first belt portion 13 has one end 13a attached by sewing to a front upper right fastener 18 located on the upper right side of the front portion 16F of the bag body 12. After passing through a rear upper left fastener 19 located on the upper left side of the rear portion 16B of the bag body 12, the other end 13b of the first belt portion 13 is attached by sewing to a rear lower left fastener 20 located on the lower left side of the rear portion 16B of the bag body 12.

[0015] The second belt portion 14 has one end 14a attached by sewing to a front upper left fastener 21 located on the upper left side of the front portion 16F of the bag body 12. After passing through a rear upper right fastener 22 located on the upper right side of the rear portion 16B of the bag body 12, the other end 14b of the second belt portion 14 is attached by sewing to a rear lower right fastener 23 located on the lower right side of the rear portion 16B of the bag body 12.

[0016] As can be clearly seen in Figures 7 and 8, the front upper right fixing device 18 and the rear upper right fixing device 22, and the rear upper left fixing device 19 and the front upper left fixing device 21 are all positioned at the same location in the left-right direction. In addition, the rear lower right fixing device 23 is positioned to the right and slightly outside of the rear upper right fixing device 22 in the left-right direction, and the rear lower left fixing device 20 is positioned to the left and slightly outside of the rear upper left fixing device 19 in the left-right direction.

[0017] Thus, by disposing the front upper right fixture 18, the rear upper left fixture 19, the rear lower left fixture 20, the front upper left fixture 21, the rear upper right fixture 22, and the rear lower right fixture 23 on the bag body 12, the first belt portion 13 and the second belt portion 14 are attached to the bag body 12 in a posture inclined to the left and right, and are provided so as to intersect above the upper opening 11 of the bag body 12.

[0018] As shown well in FIGS. 3 to 6, it is preferable that both the front upper right fixture 18 and the rear upper left fixture 19 are formed to be inclined in a parallelogram shape corresponding to the inclination angle of the first belt portion 13, and it is preferable that both the front upper left fixture 21 and the rear upper right fixture 22 are formed to be inclined in a parallelogram shape corresponding to the inclination angle of the second belt portion 14. Note that the front upper right fixture 18 and the rear upper left fixture 19 and the front upper left fixture 21 and the rear upper right fixture 22 can also be substituted with corner brackets or D-brackets of general shapes.

[0019] By forming the front upper right fixture 18 and the rear upper left fixture 19 and the front upper left fixture 21 and the rear upper right fixture 22 to be inclined corresponding to the inclination angles of the first belt portion 13 and the second belt portion 14 in this way, it is possible to simplify the attachment work of the first belt portion 13 and the second belt portion 14 to the bag body 12 and to improve the design.

[0020] In the bag 10 according to the embodiment of the present invention having the above-described configuration, when the portions between the front upper right fixture 18 and the rear upper left fixture 19 of the first belt portion 13 and the portions between the front upper left fixture 21 and the rear upper right fixture 22 of the second belt portion 14 are pulled above the bag body 12, the first belt portion 13 and the second belt portion 14 function as a hand-held portion or a shoulder-hanging portion. Therefore, in this state, the bag 10 can be used as a handbag or a tote bag.

[0021] On the other hand, when the portion of the first belt section 13 between the rear upper left fastener 19 and the rear lower left fastener 20, and the portion of the second belt section 14 between the rear upper right fastener 22 and the rear lower right fastener 23 are pulled toward the rear of the bag body 12, the first belt section 13 and the second belt section 14 function as shoulder straps. Therefore, in this state, the bag 10 can be used as a backpack.

[0022] According to the bag 10 described above in the embodiment of the present invention, one bag can be used as a tote bag or handbag during business hours and as a backpack during leisure time. For example, when visiting a client with heavy items such as a laptop in the bag body 12 for work, it can be used as a tote bag or handbag, and when returning from the client's office, it can be used as a backpack, allowing for versatile use depending on the time, place, and occasion.

[0023] Furthermore, when the bag 10 is used as a backpack, the first belt portion 13 and the second belt portion 14 cross over the upper opening 11 of the bag body 12. When the bag 10 is worn on the back, the crossed first belt portion 13 and the second belt portion 14 tighten around the top of the bag body 12, preventing items inside the bag body 12 from falling out through the upper opening 11 or being stolen.

[0024] While the above-described embodiments of the present invention may include various technically preferable limitations, the technical scope of the present invention is not limited to these embodiments unless otherwise specified. In other words, the components in the above-described embodiments of the present invention can be replaced with existing components as appropriate, and various variations are possible, including combinations with other existing components. The above-described embodiments of the present invention do not limit the content of the invention as described in the claims. [Explanation of Symbols]

[0025] 10 bags 11 Upper opening 12 Bag body 13. First Belt Section 14. Second Belt Section 15L left side part 15R Right side part 16F front part 16B Rear part 17. Cylindrical part 18 Front upper right fixture 19 Rear upper left fixture 20 Rear lower left fixture 21 Front upper left fixture 22 Rear upper right fixture 23 Rear lower right fixture 30 Bottom part

Claims

1. A bag body comprising a cylindrical portion formed by a left side portion and a right side portion arranged opposite each other on the left and right sides, and a front portion and a rear portion arranged opposite each other on the front and rear sides, and a bottom portion provided on the cylindrical portion so as to close the lower opening of the cylindrical portion, A first belt portion, one end of which is attached to a front upper right fixing device provided on the upper right side of the front portion, and the other end of which is attached to a rear lower left fixing device provided on the lower left side of the rear portion via a rear upper left fixing device provided on the upper left side of the rear portion, A second belt portion, one end of which is attached to a front upper left fixing device provided on the upper left side of the front portion, and the other end of which is attached to a rear lower right fixing device provided on the lower right side of the rear portion via a rear upper right fixing device provided on the upper right side of the rear portion, Equipped with, The first belt portion and the second belt portion are provided so as to intersect above the upper opening of the bag body, and when the portion of the first belt portion between the front upper right fastener and the rear upper left fastener and the portion of the second belt portion between the front upper left fastener and the rear upper right fastener are pulled upwards on the bag body, they function as a hand strap or shoulder strap, while when the portion of the first belt portion between the rear upper left fastener and the rear lower left fastener and the portion of the second belt portion between the rear upper right fastener and the rear lower right fastener are pulled backwards on the bag body, they function as a shoulder strap.

2. The bag according to claim 1, wherein the front upper right fastener and the rear upper left fastener are formed at an angle corresponding to the inclination angle of the first belt portion, and the front upper left fastener and the rear upper right fastener are formed at an angle corresponding to the inclination angle of the second belt portion.

Citation Information

Patent Citations

  • Tote bag

    JP2018094140A