Rucksack

Abstract

To provide a backpack capable of reducing the weight of luggage felt by the wearer. [Solution] The garment comprises a storage area 8 having a space capable of storing luggage, and allowing luggage to be put into and taken out of the space from the outside, and a shoulder strap 6 attached to the storage area 8 on the back side of the wearer when worn, and the storage area 8 relatively has a main storage area 81 having a large volume and a secondary storage area 82 having a small volume, and the secondary storage area 82 is formed by separating the area that is the upper part of the storage area 8 when worn and is close to the wearer's back, and the secondary storage area 82 is separated on all four sides, the bottom, front and both sides, from the main storage area 81 by a soft yet firm sheet material, and the top is open to the main storage area 81 or can be opened and closed.

Description

[Technical field]

[0001] The present invention relates to a backpack. [Background technology]

[0002] Traditionally, school backpacks have been used to transport children to school. Although these backpacks are strong and durable, they are also heavy, which makes them a heavy burden to carry, especially for younger children.

[0003] For this reason, in recent years, the backpack described in Patent Document 1, which is lighter than a school bag, has come to be used.

[0004] In the above-mentioned Patent Document 1, when carrying (worn) a backpack with textbooks or other items placed vertically, the items fall backwards, causing the backpack to tilt backwards and the center of gravity to shift backwards. This causes the baggage to feel heavy in spite of its actual weight, and there is room for improvement. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2002-142826 A Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above circumstances, and has as its object to provide a backpack that can reduce the weight of luggage felt by the wearer. [Means for solving the problem]

[0007] The backpack of the present invention has a space in which luggage can be stored, and is equipped with a storage area which allows luggage to be placed in and removed from the space from the outside, and shoulder straps which are attached to the wearer's back when the backpack is worn relative to the storage area, and the storage area has a relatively large volume, and a secondary storage area which has a smaller volume, and the secondary storage area is formed by separating an area of ​​the storage area which is the upper part when the backpack is worn and which is closer to the wearer's back, and the secondary storage area is separated from the main storage area on all four sides, the bottom, front and both sides, by a soft yet stiff sheet material, and the top is open to the main storage area or can be opened and closed.

[0008] According to this invention, the secondary storage area formed by dividing the storage area with a stiff sheet material keeps the center of gravity of the luggage stored in the secondary storage area higher and closer to the back of the backpack as a whole, thereby reducing the weight of the luggage felt by the wearer.

[0009] In addition, the backpack of the present invention further includes a retaining belt that is arranged to overlap the secondary storage area in the vertical direction from the side of the main storage area, and the retaining belt may be overlapped in the range from the bottom that defines the secondary storage area, through the front portion, to the top portion.

[0010] The secondary storage area is formed from a stiff sheet material, and furthermore, the secondary storage area has holding belts overlapping vertically, so that the center of gravity of the baggage stored in the secondary storage area can be more reliably held higher and closer to the back throughout the rucksack.

[0011] In addition, the backpack of the present invention may have a sheet-like reinforcing material laminated across the front portion and both side portions.

[0012] According to the above-mentioned configuration, the rigidity of the front portion and both side portions can be increased by the reinforcing material.

[0013] In addition, in the backpack of the present invention, the retaining belt may have an upper belt and a lower belt that can be connected and separated, and the lower belt may be supported by the front portion.

[0014] According to the above configuration, since the lower belt is supported by the front portion, it is possible to prevent the lower belt from sagging into the main storage area.

[0015] In addition, the backpack of the present invention has a back portion that is located on the back side of the wearer when worn, relative to the storage area, and the back portion has a double structure in the thickness direction, and a reinforcing plate may be provided in the double structure part.

[0016] According to the above configuration, the reinforcing plate makes it difficult for the rear portion to bend even when luggage is stored in the secondary storage area when there is only a small amount of luggage in the primary storage area.

[0017] In addition, the backpack of the present invention may have a reinforcing plate which is a resin plate, a flat front plate, a flat back plate, and a plurality of connecting portions spaced apart to connect the front plate and the back plate, and the connecting portions may extend in the vertical direction when worn.

[0018] According to the above-mentioned configuration, the reinforcing plate can be made lighter and can provide reinforcement particularly in the vertical direction.

[0019] In addition, the backpack of the present invention is provided with a zipper that can open and close the storage area to the outside, and the zipper may be a combination of one zipper element extending along the storage area and multiple sets of two sliders that have opposite sliding directions relative to the zipper element when opening and closing.

[0020] According to the above configuration, the fastener can be opened and closed at a portion of a preferred position relative to the storage area. Effect of the Invention

[0021] As described above, the secondary storage area formed by dividing the storage area with a stiff sheet material keeps the center of gravity of the luggage stored in the secondary storage area higher and closer to the back throughout the rucksack, making it possible to provide a rucksack that reduces the weight of the luggage felt by the wearer. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is a front top perspective view of the backpack of the present invention. [Diagram 2] FIG. 2 is a perspective view of the backpack seen from above and rearward. [Diagram 3] FIG. 2 is a side view of the backpack. [Figure 4] 1 is a perspective view showing the backpack with the lid open so that luggage can be stored in the secondary storage area provided inside. FIG. [Diagram 5] 13 is a perspective view showing the backpack with the lid open, luggage stored in the secondary storage area provided inside, and the top of the secondary storage area closed. FIG. [Figure 6] 1A is a plan view showing the backpack with the rear portion in an open position, and FIG. 1B is a plan view of the reinforcing plate. [Figure 7] 13 is a perspective view of the main parts showing the state in which two sliders of the fastener for opening and closing the lid are slid toward each other to form two openings. FIG. [Figure 8] 13 is a perspective view of the main parts showing a state in which an auxiliary lid portion provided on the lid portion is in an open state and luggage is stored therein. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] An embodiment of the backpack of the present invention will be described below with reference to the drawings. The side on which the backpack is carried (worn) is defined as the front, the side opposite the side on which the backpack is carried (worn) is defined as the rear, and the left hand side of the wearer when the backpack is carried (worn) is defined as the left side, and the right hand side of the wearer when the backpack is carried (worn) is defined as the right side.

[0024] 1 to 3, the backpack 1 comprises a main body 2 located in the middle in the front-to-rear direction, a back section 3 located on the front side of the main body 2, in other words, on the back side of the wearer when worn, a lid section 4 located on the rear side of the main body 2 and covering an opening that opens to the rear of the main body 2, a common bottom section 5 to which the lower ends of the main body 2, the back section 3 and the lid section 4 are sewn together, and a pair of shoulder straps 6, 6 that are hung on both shoulders when the wearer wears (carries) the backpack 1. A handle 7 is sewn to the upper end of the main body 2 to allow the backpack 1 to be lifted.

[0025] The backpack 1 is made of polyurethane (PU) for the outer material and uses a waterproof fastener for the fastener, making it possible to construct a backpack with excellent waterproof properties.

[0026] As shown in Fig. 3, the main body 2 has a space capable of accommodating luggage formed by the top 21, left and right side portions 22, 22 (only the right side is shown in Fig. 3), the bottom 5, fabric 23 on the rear side of the back portion 3, and the lid 4, and is provided with a storage area 8 through which luggage can be put in and taken out from the space from the outside. Fabric 26 is sewn to the lower part of the right side portion 22 to form a pocket having an opening 26A at the top.

[0027] The storage area 8 has a main storage area 81 with a relatively large volume and a sub-storage area 82 with a relatively small volume. The main storage area 81 is composed of a first area formed below the sub-storage area 82 and a second area formed on the rear side of the sub-storage area 82 so as to extend over the entire area in the vertical direction. The rear end of the first area and the lower part of the second area are connected to form a single area.

[0028] The secondary storage area 82 is formed by separating an area of ​​the storage area 8 that is the upper part when worn and that is close to the back of the wearer.

[0029] The division of the secondary storage area 82 is made of a single sheet material that is soft and stiff. The term "stiff" as used herein means that the material has a degree of shape-retaining strength that allows it to maintain its shape (its shape is unlikely to change due to its own weight alone) unless an external force is applied. In this embodiment, a sheet material made of tarpaulin, which is a laminate of a woven fabric and a soft synthetic resin (e.g., polyurethane), is used. The secondary storage area 82 formed by dividing the storage area with the stiff sheet material allows the center of gravity of the luggage stored in the secondary storage area 82 to be kept higher and closer to the back of the entire rucksack 1. This reduces the weight of the luggage felt by the wearer. Therefore, the rucksack is particularly useful as a rucksack for students.

[0030] Due to the shape retention of the sub-storage area 82, the sub-storage area 82 maintains the rectangular parallelepiped shape with an open top portion 824. For this reason, it is easy to store books such as textbooks side by side in the sub-storage area 82.

[0031] As shown in Fig. 4, the sub-storage area 82 is partitioned from the main storage area 81 by four sides: a bottom 821, a front part 822 extending upward from the rear end of the bottom 821, and both side parts 823, 823 extending upward from the left and right ends of the bottom 821. The sub-storage area 82 is also provided with a top part 824 having an opening 82K formed by an upper end 822A of the front part 822 and upper ends 823A, 823A of the both side parts 823, 823. At least a part of the top part 824 is configured to be openable and closable with respect to the main storage area 81 by a lid part 825, and one end 825A of the lid part 825 is connected to the top part 21 of the main body part 2 by sewing, as shown in Fig. 5. The lid part 825 does not have to be made of a stiff sheet material. Additionally, the front end of the bottom 821 and the front ends of both sides 823, 823 are sewn to the fabric 23 at the rear of the main body 2, thereby fixing the secondary storage area 82 to the fabric 23 at the rear of the main body 2. Since the secondary storage area 82 is formed from a stiff sheet material and further has retaining belts 9 (described later) overlapping therewith in the vertical direction, the center of gravity of luggage stored in the secondary storage area 82 can be more reliably held higher and closer to the back throughout the rucksack 1.

[0032] Further, a sheet-like reinforcing material 24 is laminated by sewing across approximately the vertical center of the front portion 822 and approximately the vertical center of both side portions 823, 823. This enables the stiffness of the front portion 822 and both side portions 823, 823 to be increased by the reinforcing material 24.

[0033] The secondary storage area 82 further includes a retaining belt 9 arranged to overlap the secondary storage area 82 from the side of the primary storage area 81 in the vertical direction. The retaining belt 9 overlaps in a range from the lower surface (not shown) of the bottom part 821 that divides the secondary storage area 82 to the top part 824 via the front part 822. The retaining belt 9 includes an upper belt 92 and a lower belt 93 that can be connected and separated by a buckle 91. The upper belt 92 is sewn to the lid part 825, and the lower belt 93 is passed from below through a loop 10 sewn to the approximately center part in the left-right direction of the reinforcing material 24 provided on the front part 822 and supported. Since the lower belt 93 is supported by the front part 822, it is possible to prevent the lower belt 93 from hanging down into the primary storage area 81. The buckle 91 includes a female member 91A connected to the upper belt 92 and a releasable male member 91B connected to the upper end of the lower belt 93 and inserted into the female member 91A to be engaged and fixed. By providing the male member 91B that is wider in width than the lower belt 93, it is possible to prevent the lower belt 93 from slipping out downward from the loop 10. By engaging the female member 91A with the male member 91B, the opening 82K is kept closed by the top part 824, which prevents the stored baggage (e.g., textbooks, not shown) from moving (flying out) out of the secondary storage area 82, for example, when the wearer runs (see FIG. 5). By releasing the engagement between the female member 91A and the male member 91B, the opening 82K is opened, allowing baggage to be put in and taken out through the primary storage area 81.

[0034] The back part 3 has a double structure in the thickness direction (front-rear direction), and a reinforcing plate 11 is provided in the double structure. The reinforcing plate 11 makes it difficult for the back part 3 to bend, even if the main storage area 81 is low in luggage and luggage is stored in the secondary storage area 82. To explain the double structure in detail, the back part 3 has two first and second storage sections 32, 33 between the rear fabric 23 of the main body part 2 and the back part 31 (see FIG. 3) having a pair of left and right mesh fabrics 31A, 31A against which the wearer's back abuts. The first storage section 32 is formed between the rear fabric 23 of the main body part 2 and a seat fabric 13 (described later) that forms the second storage section 33, and an opening for putting in and taking out stored items at the top of the first storage section 32 is configured to be openable and closable by a fastener having a fastener element 12 having front and rear teeth 12A, 12A and a slider (not shown) that engages and disengages the fastener element 12. The second storage section 33 is a storage section for storing the reinforcing plate 11 (see dashed line in Figure 1 and Figure 6 (b)), and a storage space for the reinforcing plate 11 is formed by overlapping a seat fabric 13 on the back portion 31, and an opening 14 for inserting and removing the reinforcing plate 11 is formed at the top of the second storage section 33 so that it can be opened and closed by a zipper 15.

[0035] The reinforcing plate 11 is made of a resin plate, and as shown in FIG. 6(b), has a flat front plate 11A, a flat back plate 11B, and a plurality of connecting parts 11C (which are bent in FIG. 11(b) but may be straight) arranged at intervals to connect the front plate 11A and the back plate 11B, and the connecting parts 11C extend in the vertical direction when worn. The cross section of the reinforcing plate 11 resembles the cross section of a cardboard plate. Therefore, the reinforcing plate 11 can be made lighter and can be reinforced especially in the vertical direction. Compared to the bee pollen plate that has been used for this type of application, the reinforcing plate 11 is less likely to bend, and therefore has an excellent reinforcing effect.

[0036] As shown in FIG. 2, the cover 4 is provided with a fastener that can open and close the storage area 8 to the outside. This fastener is a combination of one fastener element 16 extending along the storage area 8 and a plurality of sets (two sets in this embodiment, but three or more sets may be used) of two sliders 16A in which the sliding direction when opening and closing is opposite to that of the fastener element 16. Therefore, the fastener can be opened and closed at a portion of a desired position relative to the storage area 8, and FIG. 7 shows a state in which openings 17 and 18 are formed on the upper and lower sides of the sliders 16A and 16A by sliding the two sliders 16A and 16A so that they approach each other. The remaining two sliders 16A and 16A may also be slid close to each other to form two openings. All the sliders 16A are provided with pull tabs 16B for sliding the sliders 16A.

[0037] As shown in FIG. 5, a mesh-like fabric 25 is sewn to the upper front part of the lid part 4 to form a storage space, and an opening is formed by opening a fastener 26 provided at the top, allowing luggage to be placed in and removed from the storage space through the opening.

[0038] 7 and 8, the lower part of the lid part 4 is provided with an auxiliary lid part 19 which is smaller than the lid part 4. This auxiliary lid part 19 is provided to form an opening below the lid part 4 with a fastener 20. Therefore, by operating the pull tab 20B of the slider 20A of the fastener 20 to open the auxiliary lid part 19 relative to the lid part 4, as shown in FIG. 8, luggage (a lunch box B and a water bottle C in FIG. 8) can be put in and taken out of the lower part of the storage area 8 through the opening 19K.

[0039] 1, one (left) shoulder belt 6 of the pair of right and left shoulder belts 6, 6 has one end (upper end) sewn to the upper end of the back portion 31 and toward the left side, and is oriented along the vertical direction up to the lower part in the vertical direction, and includes a main body portion 61 formed so as to curve gently from the lower part in the vertical direction to the left end side, and a length-adjustable belt 62 connecting the lower part of the main body portion 61 to the lower part of the left end of the back portion 31. The other (right) shoulder belt 6 has one end (upper end) sewn to the upper end of the back portion 31 and toward the right side, and is oriented along the vertical direction up to the lower part in the vertical direction, and includes a main body portion 61 formed so as to curve gently from the lower part in the vertical direction to the right end side, and a length-adjustable belt 62 connecting the lower part of the main body portion 61 to the lower part of the right end of the back portion 31. One end of a pair of left and right belts 34, 34 whose length can be adjusted is sewn to the upper end of the back portion 31, and the other end of the pair of left and right belts 34, 34 is sewn to the upper end of the pair of left and right main body portions 61, 61. The lower portion of the main body portions 61, 61 is provided with a buckle 35 that can connect or disconnect the two. The buckle 35 is provided with a female member 35A connected to the belt 36 wound around the lower portion of one (left) main body portion 61 so as to be movable in the longitudinal direction thereof, and a male member 35B connected to the belt 36 wound around the lower portion of the other (right) main body portion 61 so as to be movable in the longitudinal direction thereof, and is inserted into the female member 35A to be engaged and fixed. In this embodiment, a pair of left and right shoulder belts 6, 6 are shown, but for example, a diagonal type in which a single belt is hung diagonally on the backpack may be used.

[0040] Incidentally, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit and scope of the present invention.

[0041] In the above embodiment, the top 824 located above the auxiliary storage area 82 is configured to be openable and closable with respect to the main storage area 81 by the lid 825, but the lid 825 may be omitted and the top 824 of the auxiliary storage area 82 may be configured to be constantly open with respect to the main storage area 81. In this case, by fixing the upper belt 92 to the top 21 of the main body 2 by sewing or the like and connecting the upper belt 92 and the lower belt 93 by the buckle 91, it is possible to prevent luggage (books, etc.) stored in the auxiliary storage area 82 from flying out into the main storage area 81. [Explanation of symbols]

[0042] 1... backpack, 2... main body, 3... back part, 4... lid part, 5... bottom part, 6... shoulder strap, 7... handle, 8... storage area, 9... retaining belt, 10... loop, 11... reinforcement plate, 11A... front plate, 11B... back plate, 11C... connecting part, 12... zipper element, 12A... fastener teeth, 13... seat fabric, 14... opening, 15... zipper, 16... zipper element, 16A... slider, 16B... pull tab, 17, 18... opening, 19... auxiliary lid part, 19K... opening, 20... zipper, 20A... slider, 20B... pull tab, 21... top part, 22, 22... left and right side parts, 23... rear fabric, 24...reinforcement, 25...fabric, 26...fabric, 26A...opening, 31...back, 31A...mesh fabric, 32, 33...first and second storage sections, 34...belt, 35...buckle, 35A...female member, 35B...male member, 36...belt, 61...main body, 62...belt, 81...main storage area, 82...secondary storage area, 82K...opening, 91...buckle, 91A...female member, 91B...male member, 92...upper belt, 93...lower belt, 821...bottom, 822...front, 823, 823...both sides, 822A, 823A...top, 824...top, 825...lid, 825A...one end, B...lunch box, C...water bottle

Claims

1. The bag has a space for storing luggage, and includes a storage area through which luggage can be put in and taken out from the space from the outside, and a shoulder belt provided on the back side of a wearer when wearing the bag with respect to the storage area, The storage area has a main storage area having a large volume and a sub storage area having a small volume, The secondary storage area is formed by dividing an area of ​​the storage area that is an upper part when the garment is worn and is close to the back of the wearer, The secondary storage area is partitioned from the main storage area on four sides, the bottom, front and both sides, by a soft yet resilient sheet material, and the top is open to the main storage area or can be opened and closed.

2. A holding belt is further provided which is arranged so as to overlap the secondary storage area from the side of the primary storage area in the vertical direction, 2. The backpack according to claim 1, wherein the retaining belts are overlapped in a range extending from the bottom portion, which defines the secondary storage area, through the front portion, to the top portion.

3. 2. The backpack according to claim 1, wherein a sheet-like reinforcing material is laminated across the front portion and both side portions.

4. The holding belt has an upper belt and a lower belt which can be connected and separated, The backpack according to claim 2 , wherein the lower belt is supported on the front portion.

5. The garment has a back portion that is positioned on the back side of the wearer when worn relative to the storage area, The rear portion has a double structure in the thickness direction, 2. The backpack according to claim 1, wherein a reinforcing plate is provided in the double-structure portion.

6. the reinforcing plate is a resin plate having a flat front plate, a flat back plate, and a plurality of connecting portions arranged at intervals so as to connect the front plate and the back plate; The backpack according to claim 5 , wherein the connecting portion extends in a vertical direction when worn.

7. A fastener is provided for opening and closing the storage area to the outside, The fastener includes a fastener element extending along the receiving area; The backpack according to claim 1, further comprising a plurality of pairs of sliders, each pair having opposite sliding directions relative to the fastener element when opening and closing.

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