Backpack

Abstract

We provide backpacks that minimize deformation of the storage space and reduce the burden on the user due to weight. [Solution] The backpack 1 comprises a main body 2, which has openings on the left and right sides, and a left side wall 26 and a right side wall that can open and close the openings. By having a rigid frame 262 on the right side wall and left side wall, deformation of the storage space can be suppressed when transporting or taking out the contents, and sufficient storage space can be secured. In addition, a shape-retaining belt 221 is stretched from the shoulder straps 3 across the top wall 24 to the front wall of the backpack main body, and a chest belt 31 and a waist belt 32 are attached to the shoulder straps to distribute the weight and reduce the burden on the backpack user due to the weight.

Description

Technical Field

[0001] This invention relates to a backpack.

Background Art

[0002] Conventionally, it is known that a backpack that can be carried on the shoulder is easier to carry than a hand-held bag when transporting heavy contents. When transporting pets such as dogs and cats, especially when transporting relatively heavy pets, a backpack is desired rather than a hand-held carry bag because the entire bag containing the pet becomes a considerable weight.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when a heavy content is put into a backpack, the backpack droops, the center of gravity drops, and the burden on the user's shoulder increases. On the other hand, if the entire backpack is made of a rigid material so as not to lose its shape, there is a problem that a large storage space is required when not in use.

[0005] Furthermore, when the backpack is used for transporting a pet, it is necessary to stably secure sufficient storage space inside the backpack so that the pet can comfortably spend time while being accommodated in the backpack. However, in a conventional backpack entirely made of a flexible material, although it can be folded and made compact when not in use, there is a problem that the storage space is deformed when the pet moves inside the backpack, causing stress to the pet during transportation.

Means for Solving the Problems

[0006] Therefore, as a means to solve the above problem, a backpack having a main body for storing contents, The main body comprises a bottom plate, a front wall erected from the front end of the bottom plate, a rear wall erected from the rear end of the bottom plate, and a top wall that connects and closes the upper ends of the front wall and the rear wall, forming openings on the left and right sides, and comprising a left side wall and a right side wall that can open and close the openings. The right and left walls of the main body are provided with rigid frames along their periphery. A pair of wide shoulder straps are provided, connecting the upper and lower ends of the rear wall. Each of the pair of shoulder straps has a pair of shape-retaining belts attached to it, which are positioned slightly below the upper end of the shoulder strap, and extend across the top wall to the upper end of the front wall. To provide a backpack characterized by the following features.

[0007] The main body of the backpack according to this invention is preferably made of a fabric consisting of, for example, cotton, polyester, nylon, or a blend of two or more of these materials. Furthermore, the main body of the backpack according to this invention is preferably made of a waterproof coated fabric or a resin sheet such as a polyvinyl chloride resin sheet.

[0008] The backpack according to this invention has openings on both the left and right sides. The left opening is closed by the left wall, and the right opening is closed by the right wall, both of which can be opened and closed. The user can open the zipper and put in or take out the contents from either the left or right opening. Since both the right and left walls of the backpack according to this invention have rigid frames, even if one side wall is opened, the shape is maintained by the frame of the other side wall, making it easy for the user to check the contents and put in or take out the contents.

[0009] The right and left walls of the backpack according to this invention are provided with a rigid frame along their periphery. The rigid frame may be made of resin or metal, but is preferably made of resin. The rigid frame may also be built into the right and left walls.

[0010] The backpack according to this invention may have a top wall opening on the top wall of the main body, which is equipped with a lid that can be opened and closed. When there is a top wall opening, the user can open the lid with a zipper and put in or take out the contents from the top wall opening.

[0011] When the backpack according to this invention is used for transporting pets, the top opening may have a mesh fabric lid and a shade that covers the lid. The shade, when placed over the mesh fabric lid, can protect the pet inside the backpack from sunlight entering through the mesh fabric. Alternatively, if the pet becomes restless when it can see outside, the shade can be placed over the lid to block its view. The shade can be kept closed by securing it to the mesh fabric lid with hook-and-loop fasteners or the like. Alternatively, the shade can be kept open by rolling it up and securing it with hook-and-loop fasteners or other fasteners. If the user wants to visually check on the pet inside the backpack or wants to keep the inside of the backpack well-ventilated, the backpack can be transported with the shade open. Furthermore, the contents of the backpack according to this invention are not limited to pets.

[0012] The backpack according to this invention is provided with a pair of wide left and right shoulder straps that connect the upper and lower ends of the rear wall. The pair of shoulder straps extend parallel to each other from the upper end of the rear wall. As a result, when the backpack is worn, the shoulder straps can be tightened to pull the backpack towards the wearer's back against the force that tries to separate the main body from the wearer's back, so as not to cause the wearer's shoulders to spread apart, thereby reducing the burden on the shoulders. Furthermore, to reduce the burden on the user's shoulders when carrying a backpack, the shoulder straps may have support pads made of urethane or similar material.

[0013] Furthermore, the backpack according to this invention has a pair of shape-retaining belts attached to each of the shoulder straps, extending from a position slightly below the upper end of the shoulder strap, across the top wall, and to the upper end of the front wall. The shape-retaining belts have fasteners, and when loading or unloading items from the top wall opening, the fasteners can be released to eliminate the connection between the shoulder straps and the front wall.

[0014] Furthermore, the backpack according to this invention may also have a chest belt and a waist belt. The chest belt can connect the two shoulder straps near the user's chest. The waist belt can connect the two shoulder straps near the user's waist. Because the main body is supported by the shoulder straps, shape-retaining belt, chest belt, and waist belt, the weight is distributed, reducing the burden on the user. The chest belt and waist belt each have fasteners, and the connection can be broken by releasing the fasteners when taking off the backpack.

[0015] The backpack according to this invention may have a rigid front wall frame extending from the right end to the left end of the upper front wall. The rigid front wall frame may be made of resin or metal, but is preferably made of resin. The rigid front wall frame may also be built into the upper front wall. When a rigid front wall frame is provided at the upper front wall, the frame connects and supports the two shape-retaining belts, allowing the shape-retaining belts to support the weight of the main body more firmly. Here, the front wall frame at the upper part of the front wall is not connected to the frame on the right side wall or the frame on the left side wall. Therefore, the right side wall and the left side wall can be opened independently of the front wall frame, and the backpack according to this invention can be folded compactly. It is preferable that the front wall frame is provided over the length extending from the left to right ends of the front wall. This allows the force pulling up the main body by the two shape-retaining belts to be evenly distributed over the entire left-right direction.

[0016] The backpack according to this invention may have handles attached to both or either the upper end of the front wall and the upper end of the rear wall. The backpack according to this invention may have a removable auxiliary plate installed on the bottom plate. When using the backpack according to this invention for transporting pets, a lead to prevent the pet from jumping out may be provided inside the backpack, for example, on the bottom plate. By attaching the lead to the collar or other part of the pet's collar inside the backpack, it is possible to prevent the pet from jumping out as soon as the backpack is opened.

[0017] When the backpack according to this invention is used for transporting pets, the backpack may be provided with ventilation windows covered with mesh fabric on both the right and left sides, or on either side, or on the front wall. The mesh fabric should preferably have a fine mesh to prevent the pet's claws from getting caught inside the backpack. [Effects of the Invention]

[0018] The backpack according to this invention has rigid frames on the right and left walls, and is equipped with shape-retaining belts, so that even when filled with heavy contents, the shape of the main body is maintained and the backpack can be carried with the main body pulled up. As a result, the shape of the backpack does not collapse even when filled with contents, and the change in the way force is applied to the shoulders due to the collapse of the main body is reduced, thus reducing the burden on the user's shoulders. In addition, the sides can be opened wide when putting contents into the backpack, and even when one side is opened, the shape is maintained by the frame on the other side, making it easy for the user to see and take out the contents.

[0019] Also, according to the present invention, when carried with contents, since rigid frames are provided on the right and left side walls in particular, and the main body can be carried without changing its shape by the shape-retaining belt, it is possible to maintain a state of close contact without creating a gap between the user's back and the backpack, and prevent the backpack from separating from the back due to deformation of the main body. By maintaining the close contact state between the user's back and the backpack, the load in the direction of the back curving can be reduced, and the weight of the contents can be received vertically by the user's pelvis, thereby reducing the burden on the user.

[0020] Furthermore, since the shape-retaining belt can pull up the main body from the front wall and the frames on the right and left side walls can suppress and maintain the shape change of the main body, it is easy to horizontally hold the bottom plate from the lower end of the rear wall, and the entire backpack can be carried at a position above the user's pelvis. As a result, the user can carry the backpack in a state with less burden by effectively utilizing the pelvis. Also, by being able to hold the bottom plate horizontally, even when the contents are a living creature such as a pet, it is possible to prevent the creature from taking an unstable posture during movement.

[0021] Moreover, when the backpack according to the present invention is used for transporting a pet, since rigid frames are provided on the right and left side walls to maintain the side shape, and the shape of the top wall is maintained by the shape-retaining belt, it has excellent shape retention, so a sufficient accommodation space can be secured inside the backpack, and it is difficult to give stress to the pet during transportation.

[0022] Also, if the front wall side of the backpack is heavy, it will be pulled backward during transportation, increasing the burden on the user's shoulders. In the backpack according to the present invention, by stretching the shape-retaining belt from the upper end of the front wall across the top wall to a position slightly below the upper end of the shoulder belt, both the rear wall side and the front wall side can be supported by the shoulder belt of the backpack during transportation. Therefore, for example, even if the pet animal moves and leans towards the front wall side during transportation, the front wall side is also supported by the shoulder belt through the shape-retaining belt, so it is not pulled backward and the burden on the user's shoulders is reduced.

[0023] Furthermore, the backpack according to the present invention has rigid frame bodies on the right side wall and the left side wall. However, since the front wall frame body at the upper part of the front wall is not connected to either the frame body of the right side wall or the frame body of the left side wall, when not in use, if the fasteners on the right side wall and the left side wall are opened, the front wall can be tilted towards the bottom plate direction to flatten the entire main body. As a result, the backpack according to the present invention can be folded compactly when not in use.

[0024] The backpack according to the present invention having a rigid full-wall frame body at the upper end of the front wall can support the weight on the front wall side of the main body more firmly and evenly in the left-right direction with the shape-retaining belt because the front wall frame body connects and supports between the two shape-retaining belts. Thereby, the burden on the user can be further reduced.

Brief Explanation of the Drawings

[0025] [Figure 1] FIG. 1 is a perspective view seen from the rear wall side of the backpack 1 according to an embodiment of the present invention. [Figure 2] FIG. 2 is a right side view of the backpack 1 according to an embodiment of the present invention. [Figure 3] FIG. 3 is a top view of the backpack 1 according to an embodiment of the present invention. [Figure 4] FIG. 4 is a rear view of the backpack 1 according to an embodiment of the present invention. [Figure 5] FIG. 5 is a front view of the backpack 1 according to an embodiment of the present invention. [Figure 6] Figure 6 is a bottom view of a backpack 1, which is one embodiment of the present invention. [Figure 7] Figure 7 is an internal view of a backpack 1, which is one embodiment of the present invention, with the right side wall 25 opened. The thin lines shown in Figure 7 represent the shape of the three-dimensional surface. [Figure 8] Figure 8 is an AA end view of backpack 1, which is one embodiment of the present invention. [Modes for carrying out the invention]

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant explanations will be omitted.

[0027] A backpack 1 according to one embodiment of the present invention is shown in Figures 1 to 8. As shown in Figure 1, the backpack 1 according to one embodiment of the present invention comprises a main body 2. The main body 2 has a bottom plate 21, a front wall 22 erected from the front end of the bottom plate 21, a rear wall 23 erected from the rear end of the bottom plate 21, and a top wall 24 that connects and closes the upper ends of the front wall 22 and the rear wall 23, forming a right-side opening 251 and a left-side opening 261. The right-side opening 251 is closed using a right-side zipper 253 by the right-side wall 25, and the left-side opening 261 is closed using a left-side zipper 263 by the left-side wall 26. A left-side wall frame 262 is built into the left-side wall 26 at the position indicated by the dashed line in Figure 1. Also, a right-side wall frame 252 is built into the right-side wall 25 at the position indicated by the dashed line in Figure 2. As shown in Figure 6, the right wall 25 is connected to the bottom plate 21 by the right wall bottom plate connecting portion 255, and the left wall 26 is connected to the bottom plate 21 by the left wall bottom plate connecting portion 265. The right wall 25 and the left wall 26 can be opened by opening the right zipper 253 and the left zipper 263, respectively, with the right wall bottom plate connecting portion 255 and the left wall bottom plate connecting portion 265 as the pivot points, thereby opening the right opening 251 and the left opening 261. The backpack 1 of this invention has a left-side wall frame 262, which allows the shape to be maintained even when the right-side wall 25 is opened, making it easy to put in and take out the contents.

[0028] By opening the right zipper 253 and the left zipper 263, the right wall 25 and the left wall 26 can be folded into the interior of the main body 2, and then the front wall 22 can be folded towards the bottom plate 21, thereby making the entire main body 2 flat. As a result, the backpack 1 according to the present invention can be folded compactly when not in use.

[0029] As shown in Figure 7, the right wall 25 has a right wall ventilation window 254, and the left wall 26 has a left wall ventilation window 264. The right wall ventilation window 254 and the left wall ventilation window 264 serve as air intakes when the contents are living creatures such as pets, and also function as observation windows that allow the user to observe the pet inside from the outside of the backpack 1.

[0030] The top wall 24 of the main body 2 has a top wall opening 241. Items can be put in and taken out through the top wall opening 241, the right-side opening 251, and the left-side opening 261. The top wall opening 241 is covered with a mesh fabric lid 242, and a shade 243 is placed over it. The lid 242 can be opened and closed using the top zipper 245. The shade 243 can be kept open by rolling it up and securing it with the shade fastener 244.

[0031] As shown in Figure 1, a pair of wide left and right shoulder straps 3 are attached to the rear wall 23 of the main body 2, connecting the upper end 232 of the rear wall to the shoulder strap rear wall connecting portion 33 at the lower end of the rear wall. As shown in Figures 1 and 3, it is preferable that the pair of shoulder straps 3 extend parallel to each other from the upper end 232 of the rear wall 23. As a result, when the backpack is worn, the shoulder straps can be tightened to pull the upper part of the rear wall 23 of the main body 2 towards the user's back, preventing the user's shoulders from spreading apart, thus reducing the burden on the shoulders.

[0032] Each of the pair of shoulder straps 3 has a pair of shape-retaining belts 221 attached to it, which extend from a position slightly below the upper end of the shoulder strap 3, across the top wall 24, to the upper end 224 of the front wall. One end of the shape-retaining belt 221 is attached to the front wall 22 at a front wall shape-retaining belt connecting part 225 located at the upper end 224 of the front wall. The other end of the shape-retaining belt 221 is attached to the shoulder strap 3 at a shoulder strap shape-retaining belt connecting part 34 located slightly below the upper end of the shoulder strap 3.

[0033] One end of the shape-retaining belt 221 is attached to the upper end 224 of the front wall, spanning the top wall 24, so that the shape-retaining belt 221 can lift the main body 2 while including the front-to-back width of the top wall 24. Furthermore, the right wall frame 252 built into the right wall 25 and the left wall frame 262 built into the left wall 26 can maintain the shape of the main body 2 against the upward action of the shape-retaining belt 221, which would otherwise compress the main body 2 in the front-to-back direction. This allows the backpack to maintain its shape even when filled with heavy items, and to be carried with the main body pulled up. Therefore, the backpack's shape does not collapse due to its contents, and the changes in how force is applied to the shoulders due to the deformation of the main body are reduced, thus reducing the burden on the user's shoulders.

[0034] The shoulder straps 3 are fitted with a chest strap 31 and a waist strap 32 that connect the two shoulder straps 3. The weight is distributed by the shoulder straps 3, the shape-retaining belt 221, the chest strap 31 and the waist strap 32 to support the main body 2, thereby reducing the burden on the user of the backpack 1 of this invention. The chest strap 31 has a chest strap fastener 311 and the waist strap 32 has a waist strap fastener 321, allowing the fasteners to be released and the connection between the two shoulder straps 3 to be undone when taking off the backpack.

[0035] Furthermore, as shown in Figure 3, the front wall 22 has a front wall frame 222 (indicated by the dashed line) built into it, extending from the right end to the left end of the upper part of the front wall. Here, the front wall frame 222 is separate from both the right wall frame 252 and the left wall frame 262. By providing the front wall frame 222, the lifting force applied by the shape-retaining belt 221 when it attempts to lift the front wall 22 is evenly distributed in the left-right width direction, thereby preventing deformation of the main body 2. Furthermore, because the front wall frame 222 is separated from the right wall frame 252 and the left wall frame 262, the front wall frame 222 provides an effect of preventing deformation of the shape of the main body 2, while allowing the right-side fastener 253 and the left-side fastener 263 to be provided on the right-side wall 25 and the left-side wall 26.

[0036] Figure 7 shows the internal state of the backpack 1 of the present invention as seen from the right opening 251 with the right wall 25 opened. The backpack 1 of the present invention has a rigid auxiliary plate 211 installed on the bottom plate 21. The auxiliary plate 211 prevents the bottom plate 21 from deforming downward due to the contents, thereby reducing the load on the user's shoulders caused by the deformation of the bottom plate 21. The auxiliary plate 211 can be removed from the right opening 251 or the left opening 261 when folding the backpack 1 as described above. Removing the auxiliary plate 211 does not hinder the inward folding operation of the right wall 25 and the left wall 26.

[0037] As shown in Figure 7, the backpack 1 of this invention is equipped with a lead 212 on the bottom plate 21. When using the backpack 1 of this invention to transport pets, the lead 212 can be attached to the collar of the pet placed inside the backpack, preventing the pet from jumping out as soon as the backpack is opened.

[0038] Figure 8 is an end view of the left wall 26. As shown in Figure 8, the left wall 26 has a left wall frame 262 built into it along its periphery. Similarly, the right wall 25 also has a right wall frame 252 built into it at the position indicated by the dashed line in Figure 2. These frames prevent the backpack 1 of this invention from sagging even when filled with heavy contents, reducing the burden on the user's shoulders.

[0039] According to the backpack 1, when carrying items inside, the rigid right wall frame 252 and left wall frame 262 are provided on the right wall 25 and left wall 26, respectively, and the shape-retaining belt 221 allows the main body 2 to be carried without changing shape. This maintains a close fit between the user's back and the backpack 1 without creating any gaps, preventing the backpack 1 from separating from the user's back due to deformation of the main body 2. Maintaining a close fit between the user's back and the backpack 1 reduces the load on the back that causes it to arch, allowing the weight of the contents to be supported vertically by the user's pelvis, thereby reducing the burden on the user.

[0040] Furthermore, since the shape-retaining belt 221 lifts the main body 2 away from the front wall 22, the right-side wall frame 252 and the left-side wall frame 262 can maintain the shape of the main body 2 while suppressing changes in its form. This makes it easy to hold the bottom plate 21 horizontally from the lower end of the rear wall 23, allowing the entire backpack 1 to be carried above the user's pelvis. This allows the user to carry the backpack 1 in a less burdensome position, making effective use of their pelvis. Also, by holding the bottom plate 21 horizontally, it is possible to prevent the contents, such as pets, from becoming unstable during transport. In particular, by installing a rigid support plate 211 on top of the bottom plate 21, it is possible to maintain a horizontal position while maintaining a flatter bottom surface. [Explanation of Symbols]

[0041] 1. Backpack 2 Main body 21 Bottom plate 211 Auxiliary board 212 Reeds 22 Front wall 221 Shape-retaining belt 2211 Shape-retaining belt fastener 222 Front wall frame 223 Front wall handle 224 Upper end of front wall 225 Front wall shape-retaining belt connection part 23 Back wall 231 Rear wall handle 232 Upper end of rear wall 24 Ceiling Wall 241 Top and wall opening 242 Lid 243 Shade 244 Shade fasteners 245 Top zipper 25 Right side wall 251 Right side opening 252 Right side wall frame 253 Right-side zipper 254 Right-side wall ventilation window 255 Right side wall bottom plate connection part 26 Left side wall 261 Left side opening 262 Left side wall frame 263 Left side zipper 264 Left wall ventilation window 265 Left side wall bottom plate connection part 3 Shoulder straps 33 Shoulder belt rear wall connection part 34 Shoulder strap shape retention belt connection part

Claims

1. A backpack having a main body for storing contents, The main body comprises a bottom plate, a front wall erected from the front end of the bottom plate, a rear wall erected from the rear end of the bottom plate, and a top wall that connects and closes the upper ends of the front wall and the rear wall, and has openings on the left and right sides, and is provided with a left side wall and a right side wall that can open and close the openings. The right and left walls of the main body are provided with rigid frames along their periphery. A pair of wide shoulder straps are provided, connecting the upper and lower ends of the rear wall. Each of the pair of shoulder straps has a pair of shape-retaining belts attached to it, which are positioned slightly below the upper end of the shoulder strap, and extend across the top wall to the upper end of the front wall. A backpack characterized by the following features.

2. A rigid front wall frame is provided extending from the right end to the left end of the upper part of the front wall. The backpack according to feature 1.

3. The pair of shoulder straps extend parallel to each other from the upper end of the rear wall. The backpack according to feature 1.

4. A backpack according to claim 1, for use in transporting pet animals.

Images