RU2754660C1 - Kit - Google Patents

Abstract

FIELD: kits.SUBSTANCE: kit contains a body, a flap and a pair of shoulder straps. The body contains a rear panel (11) and an insert (12) attached to the outer edge (11a) of the rear panel (11). The insert (12) contains: an outer layer (12a); a spacer (12b) located inside the outer layer (12a) and having a higher flexural rigidity than the outer layer (12a); and an inner spacer (12c) located inside the spacer (12b) having a higher flexural rigidity than the outer layer (12a). One of the spacers (12b) and the inner spacer (12c) comprises a body (P1) and a projection (P2) protruding from the body (P1) in a direction away from the outer layer (12a). The body (P1) and the projection (P2) are supported by the rear panel (11).EFFECT: kit improvement.3 cl, 15 dwg

Description

FIELD OF TECHNOLOGY

[0001] The present invention relates to a knapsack ("Randosel").

BACKGROUND OF THE INVENTION

[0002] There are backpacks of the so-called Gakushuin type. The Gakushuin-type knapsack contains a body for accommodating textbooks or similar items and a body insert that contains a side wall enclosing the interior of the body; and a flange protruding outwardly from the side wall. The flange is attached to the back of the case. A Gakushuin-type knapsack is disclosed, for example, in Japanese Utility Model Registration No. 3078744 (Patent Document 1).

List of cited documents

[0003] Patent Document 1: Japanese Utility Model Registration Document No. 3078744.

BRIEF DESCRIPTION OF THE INVENTION

Technical problem

[0004] With regard to the Gakushuin-type backpack, the flange protrudes outward from the side wall and, accordingly, the outline of the back panel is larger than the side wall. Thus, if the interior space enclosed by the side wall is increased, the outline of the rear panel is also increased, thereby increasing the size of the cabinet. Thus, it is difficult to increase the internal space while limiting the increase in the size of the body. In addition, the flange helps to strengthen the body. Therefore, if the flange is provided not to prevent an increase in the size of the body, it would be difficult to ensure the strength of the body.

[0005] The present invention has been made in view of the above problem, and an object of the invention is to provide a backpack in which the interior space can be increased and the strength of the body can be ensured while limiting the increase in the size of the body.

Solution

[0006] A knapsack according to the present invention comprises: a body comprising an opening; a hinged valve attached to the body to enable the opening or closing of the opening; and a pair of shoulder straps attached to the body. The housing contains: a back panel to which one end of each of a pair of shoulder straps is attached and a flap; and an insert attached to the outer edge of the rear panel. The insert contains: outer layer; a spacer located inside the outer layer and having greater flexural rigidity than the outer layer; and an inner liner located within the liner and having greater flexural rigidity than the outer layer. One of the components, a spacer or inner liner, contains a body and a protruding portion that projects from the body in a direction away from the outer layer. The main part and the projecting part are supported by the rear panel.

Positive effects of the invention

[0007] Regarding the knapsack, according to the present invention, one of the pad or inner lining components includes a projection extending from the main body in a direction away from the outer layer. As such, the projecting part does not project outwardly beyond the outer layer. Accordingly, the outline of the rear panel is no larger than the insert, and thus the interior space can be increased while at the same time the size of the rear panel is maintained. Thus, the interior space can be increased, but at the same time the increase in the size of the body is limited. In addition, the insert contains a pad and an inner lining. Thus, the strength of the body can be ensured both by the spacer and by the inner lining. Further, the main part and the projecting part are supported by the rear panel. Thus, the strength of the body can be ensured by the main body and the protruding portion.

BRIEF DESCRIPTION OF DRAWINGS

[0008] FIG. 1 is a schematic perspective view of a backpack according to one embodiment of the present invention;

in fig. 2 is an exploded perspective view of the back panel and knapsack insert shown in FIG. 1;

in fig. 3 is a cross-section III-III in FIG. 1;

in fig. 4 is a cross section IV-IV in FIG. 1;

in fig. 5 is a deployed view of the liner and inner liner of the insert shown in FIG. 2;

in fig. 6 is an expanded view of the outer layer of the insert shown in FIG. 2;

in fig. 7 is a deployed view of the insert and reinforcement shown in FIG. 2;

in fig. 8 shows the location of the rear panel and insert shown in FIG. 7;

in fig. 9 is a schematic perspective view of a knapsack according to a comparative example;

in fig. 10 is a cross-section X-X in FIG. nine;

in fig. 11 is a cross-section XI-XI in FIG. nine;

in fig. 12 is a cross-sectional view of a knapsack according to modification 1 in one embodiment of the present invention, in the position corresponding to FIG. 3;

in fig. 13 is a cross-sectional view of a knapsack according to modification 1 in one embodiment of the present invention, in the position corresponding to FIG. 4;

in fig. 14 is a cross-sectional view of a knapsack according to modification 2 in one embodiment of the present invention, in the position corresponding to FIG. 3;

in fig. 15 is a cross-sectional view of a knapsack according to modification 2 in one embodiment of the present invention, in the position corresponding to FIG. 4.

DESCRIPTION OF IMPLEMENTATION OPTIONS

[0009] One embodiment of the present invention is described below with reference to the drawings. In the following figures, the same or corresponding parts are designated with the same reference numbers, and the description is not repeated.

[0010] First, a configuration of a backpack according to one embodiment of the present invention will be described.

The knapsack 100 (see FIGS. 1 and 2) according to the present embodiment basically comprises a body 1, a flap 2, a pair of shoulder straps 3, a connecting piece 4 and a reinforcing piece 5.

[0011] The body 1 comprises: a rear panel 11, an insert 12 and a front panel 13. The body 1 comprises an opening OP. At the upper end of the housing 1, the housing 1 contains an opening OP. The body 1 contains an internal space IS, communicated with the opening OP. The interior space is the space enclosed by the respective interior surfaces of the rear panel 11, the insert 12 and the front panel 13. The body 1 is designed so that textbooks or the like can be placed in its interior space IS through the opening OP.

[0012] One end of each of the pair of shoulder straps 3 is attached to the rear panel 11. A flap 2 is attached to the rear panel 11. The connecting piece 4 is attached to the rear panel 11. Each of the pair of shoulder straps 3 is connected to the rear panel 11 via the connecting piece 4 The reinforcing element 5 is attached to the rear panel 11 and insert 12.

[0013] The insert 12 is attached to the outer edge 11a of the rear panel 11. The insert 12 is attached to the outer edge 11a, except for the central portion of the upper end of the rear panel 11. It is the U-shaped insert 12 that is attached to the outer edge 11a of the rear panel 11.

[0014] The insert 12 includes a pair of side panels 121 and a bottom panel 122. The pair of side panels 121 is positioned to face each other, and the bottom panel 122 is positioned between the side panels 121. The pair of side panels 121 is configured such that they protruded upwardly from opposite ends of the bottom panel 122. The bottom panel 122 is positioned to face the opening OP.

[0015] The flap valve 2 is connected to the body 1 so that the opening OP can be opened or closed. More specifically, the flap valve 2 is connected to the upper end of the rear panel 11 of the housing 1 so that the opening OP can be opened or closed when the base end of the flap valve 2 is located at the upper end of the rear panel 11. The flap valve 2 is configured so that it covered the opening OP and the front panel 13 of the housing 1 when the flap 2 is in the closed position, as shown in FIG. 1. The flap valve 2 is also designed in such a way that the opening OP and the front panel 13 of the housing 1 are open when the flap valve 2 is open.

[0016] A pair of shoulder straps 3 are attached to the body 1. More specifically, one end of each of the pair of shoulder straps 3 is attached to the upper end of the rear panel 11 via a connecting member 4. For convenience of illustration, in FIG. 1 shows only one end and the surroundings of each of a pair of shoulder straps 3, and the belts are not shown except for the ends and their surroundings. The other end of each of the pair of shoulder straps 3 is connected to the bottom panel 122 of the insert 12 via an attachment, which is not shown. Of the pair of shoulder straps 3, one is on the left and the other is on the right. A pair of shoulder straps 3 are configured to fit correctly on the right and left shoulders of the user carrying the satchel 100 on his back.

[0017] A reinforcing element 5 is applied to the bottom of the cabinet 1 along the corners of the cabinet 1 and to the side of the rear panel 11. The reinforcement 5 extends along the lower edge of the rear panel 11 and extends over the pair of side panels 121. From the lower edge of the rear panel 11, the reinforcement element 5 extends upwardly along each of the pair of side panels 121. The reinforcement 5 is positioned to extend over the rear panel 11 and each of the pair of side panels 121, and over the rear panel 11 and bottom panel 122.

[0018] Next, the configurations of the rear panel 11 and the insert 12 are described in detail.

The insert 12 (see Figs. 2 and 3) contains an outer layer 12a, a liner 12b and an inner liner 12c. The outer layer 12a, the liner 12b and the inner liner 12c are stacked on top of each other. The outer layer 12a, the liner 12b and the inner liner 12c are arranged in this order from the outside to the inside.

[0019] The outer layer 12a forms the outer surface of the insert 12. The material for the outer layer 12a is artificial leather or, for example, cowhide. The liner 12b has a higher flexural rigidity than the outer layer 12a. The spacer 12b is made of a different material from the outer layer 12a. The material for the spacer 12b can be, for example, a polymer, and more specifically, a foamed polymer made of polyethylene terephthalate fibers and a polyester resin mixed together as main components can be used. The gasket 12b is located inside the outer layer 12a. The inner lining 12c has a higher flexural rigidity than the outer layer 12a. The inner liner 12c is made of a different material from the outer layer 12a. The material for the inner lining 12c is, for example, a polymer, and more specifically, a foamed polymer made of polyethylene terephthalate fibers and a polyester resin mixed together as main components can be used. Alternatively, the material for the inner lining 12c may, more specifically, be a floor of the above-mentioned foamed polymer and a polymer made of wood pulp and acrylic polymer mixed together as main components. The inner liner 12c is located inside the liner 12b.

[0020] The pad 12b may have a flexural rigidity equivalent to that of the inner pad 12c. The liner 12b can be made of the same material as the inner liner 12c and can have the same thickness as the inner liner 12c. It is preferable that the pad 12b has a higher flexural rigidity than the inner pad 12c. In this case, the spacer 12b may be made of a different material from the material of the inner lining 12c, and can be thicker than the inner lining 12c.

[0021] One of the components, the spacer 12b or the inner pad 12c, comprises a body P1 and a projection P2. In the present embodiment, the inner lining 12c includes a body P1 and a projection P2. The protruding portion P2 is configured to protrude from the main portion P1 in a direction away from the outer layer 12a. The protruding portion P2 is located near the edge adjacent to the rear panel 11 of the main body P1. More specifically, a portion of the inner pad 12c along the side of the inner pad 12c is folded inwardly to form a folded portion. The main portion P1 and the projecting portion P2 are supported by the rear panel 11. More specifically, the folded portion of the inner lining 12c fits snugly against the inner surface of the rear panel 11. In the present embodiment, the spacer 12b extends in a straight line until it contacts the inner surface of the rear panel 11.

[0022] The outer layer 12a, the liner 12b and the inner lining 12c stacked on top of each other are sewn together. More specifically, the outer layer 12a, the liner 12b and the inner lining 12c stacked on top of each other are sewn together so that the thread passes through each of them.

[0023] More specifically, the outer layer 12a has an edge folded to form a folded portion P3. The folded part P3 is laid on the outer surface of the outer edge 11a of the rear panel 11. The outer edge 11a of the rear panel 11 is held between the folded part P3 of the outer layer 12a and the protruding part P2 of the inner lining 12c. In a state in which the outer edge 11a of the rear panel 11 is held between the folded portion P3 of the outer layer 12a and the protruding portion P2 of the inner lining 12c, the folded portion P3 of the outer layer 12a, the outer edge 11a of the rear panel 11 and the protruding portion P2 of the inner lining 12c are sewn together with thread 6. In addition, the outer layer 12a, the liner 12b and the main body P1 of the inner lining 12c are sewn together with a thread 7.

[0024] The reinforcing element 5 (see FIG. 4) is disposed to cover the outer side of the outer layer 12a at the corners of the body 1 from the side of the rear panel 11. The folded portion P3 of the outer layer 12a is held between the reinforcing element 5 and the rear panel 11. In the state in which the folded portion P3 of the outer layer 12a and the outer edge 11a of the rear panel 11 are held between the reinforcing element 5 and the projection P2 of the inner lining 12c, the reinforcing member 5, the folded portion P3 of the outer layer 12a, the outer edge 11a of the rear panel 11 and the projection P2 the inner lining 12c is sewn together with the thread 6. In addition, the reinforcement 5, the outer layer 12a, the pad 12b, and the body P1 of the inner lining 12c are sewn together with the thread 7.

[0025] Next, the arrangement of the rear panel 11 and the insert 12 (see FIGS. 5-8) is described in detail. For convenience of illustration, FIG. 5-8, insert 12 is shown in its unfolded state. Along the boundary between the body P1 (see FIG. 5) and the protruding portion P2 of the inner pad 12c, the pad 12b is laid on the inner pad 12c. The outline of the pad 12b is smaller than the outline of the inner pad 12c. Along one end in the width direction of the inner lining 12c, the protruding portion P2 is disposed to extend in the longitudinal direction. The inner lining 12c has a toothed portion 20. The toothed portion 20 is formed at an edge extending in the longitudinal direction of the protruding portion P2. In the central part, in the longitudinal direction of the protruding part P2, two toothed portions 20 are formed. The toothed portion 20 has a sawtooth shape. The toothed portions 20 facilitate the folding of the inner lining 12c to form the projection P2.

[0026] Along one edge in the width direction of the outer layer 12a (see FIG. 6), the folded portion P3 is positioned to extend in the longitudinal direction. The outer layer 12a (see FIG. 7) of the liner 12b and the inner liner 12c are stacked on top of each other. Further, the reinforcing element 5 is laid on the lateral side of the outer layer 12a against the gasket 12b. The reinforcing element 5 is disposed centrally, in the longitudinal direction of the outer layer 12a, over the serrated portions 20. The rear panel 11 is positioned on the insert 12 so that the folded portion P3 of the outer layer 12a is located on the outer edge 11a of the rear panel 11. Rear panel 11 positioned on insert 12 such that the lower corners of the rear panel 11 are located over the toothed portions 20.

[0027] Next, the functions and benefits of the backpack 100 according to the present embodiment are described in comparison with a comparative example.

[0028] The knapsack 100 (see FIG. 9) in the comparative example is a so-called Gakushuin-type knapsack 100. With regard to the knapsack 100 disclosed in the comparative example, the insert 12 comprises a side wall 123 enclosing an interior space IS of the housing 1; and a flange 124 projecting outwardly from the side wall 123. The flange 124 is attached to the outer edge 11a of the rear panel 11 of the housing 1. The flange 124 and the outer edge 11a are externally coated with a corner layer 8.

[0029] The flange 124 (see FIGS. 10 and 11) comprises a first flange member 124a and a second flange member 124b. The outer layer 12a comprises a first flange member 124a. The first flange member 124a is located near an edge adjacent to the rear panel 11 of the outer layer 12a. The gasket 12b comprises a second flange member 124b. The second flange member 124b is located near the edge adjacent to the rear panel 11 of the gasket 12b. The first flange member 124a and the second flange member 124b are formed to extend away from the inner liner 12c

[0030] With regard to the knapsack 100, according to the comparative example, the flange 124 protrudes outward from the side wall 123, and accordingly the outline of the rear panel 11 is larger than the outline of the side wall 123. Thus, if the inner space IS enclosed by the side wall 123 is increased, the contour of the rear panel 11 also increases, thereby increasing the size of the body 1. Therefore, it is difficult to increase the interior space IS while limiting the increase in the size of the body 1. In addition, the flange 124 acts as a means of reinforcing the body 1. Therefore, if Since the flange 124 is not designed to prevent an increase in the size of the body 1, it is difficult to ensure the strength of the body 1.

[0031] In contrast, with regard to the knapsack 100 according to the present embodiment, one of the pad 12b or the inner pad 12c includes a projection P2 extending from the body P1 in a direction from the outer layer 12a as shown in FIG. 1 and 3. As such, the projection P2 does not project outwardly from the outer layer 12a. Accordingly, the outline of the rear panel 11 is no larger than the insert 12, and thus it is possible to increase the internal space IS while maintaining the size of the rear panel 11. Thus, the internal space IS can be increased while limiting the increase in the size of the cabinet 1. In addition, the insert 12 contains a liner 12b and an inner liner 12c. Thus, it is possible to ensure the strength of the body 1 by using both the spacer 12b and the inner pad 12c. In addition, the body P1 and the projection P2 are supported by the rear panel 11. Thus, it is possible to ensure the strength of the body 1 by the body P1 and the projection P2.

[0032] In addition, the insert 12 includes a spacer 12b and an inner lining 12c. Thus, it is possible to separately adjust the strength of the pad 12b and the strength of the inner pad 12c. Thus, it is easy to adjust the strength of the body 1.

[0033] With regard to the knapsack 100, according to the present embodiment, the back panel 11 is held between the folded portion P3 of the outer layer 12a and the protruding portion P2, and thus the corner layer 8 in the comparative example is optional. Since the corner layer 8, which is a separate element from the outer layer 12a, is optional, the number of components can be reduced. Accordingly, the performance can be improved.

[0034] The knapsack 100 (see FIGS. 1 and 4) according to the present embodiment comprises a reinforcing element 5. Thus, it is possible to increase the strength of the body 1 by means of the reinforcing element 5.

[0035] With regard to the knapsack 100 according to the present embodiment, the inner lining 12c includes a projection P2. Thus, the inner liner 12c, the outer layer 12a, and the liner 12b, which is held between the inner liner 12c and the outer layer 12a, can be easily sewn together.

[0036] With regard to the knapsack 100, according to the present embodiment, the pad 12b may have greater flexural strength than the inner pad 12c. Thus, it is easy to ensure the strength of the body 1 by means of the spacer 12b.

[0037] Next, the backpack 100 of modification 1 and the backpack 100 of modification 2 according to the present embodiment are described.

[0038] A satchel 100 (see FIGS. 12 and 13) of modification 1 according to the present embodiment has been described. The knapsack 100 of Modification 1 according to the present embodiment differs from the above-described knapsack 100 according to the present embodiment mainly in the structure of the pad 12b and the inner lining 12c.

[0039] With regard to the backpack 100 of modification 1, according to the present embodiment, the pad 12b includes a body P1 and a projection P2. The protruding portion P2 is configured to extend from the body P1 in a direction away from the outer layer 12a so that the protruding portion P2 extends beyond the inner lining 12c. A portion of the pad 12b along the side of the pad 12b forms a folded portion. The folded portion of the pad 12b fits snugly against the inner surface of the rear panel 11. The inner pad 12c is supported by the protruding portion P2 of the pad 12b. The inner lining 12c extends in a straight line until it contacts the inner surface of the projection P2. Namely, the inner lining 12c does not include the protruding portion P2.

[0040] The outer edge 11a (see FIG. 12) of the rear panel 11 is held between the folded portion P3 of the outer layer 12a and the protruding portion P2 of the pad 12b. In a state in which the outer edge 11a of the rear panel 11 is held between the folded portion P3 of the outer layer 12a and the protruding portion P2 of the liner 12b, the folded portion P3 of the outer layer 12a, the outer edge 11a of the rear panel 11, and the protruding portion P2 of the liner 12b are sewn together with thread 6. In addition, the outer layer 12a, the main body P1 of the liner 12b and the inner lining 12c are sewn together with a thread 7.

[0041] In a state in which the folded portion P3 (see Fig. 13) of the outer layer 12a and the outer edge 11a of the rear panel 11 are held between the reinforcing member 5 and the projection P2 of the pad 12b, the reinforcing member 5, the folded portion P3 of the outer layer 12a , the outer edge 11a of the rear panel 11 and the projection P2 of the pad 12b are sewn together with the thread 6. In addition, the reinforcement 5, the outer layer 12a, the main body P1 of the pad 12b and the inner lining 12c are sewn together with the thread 7.

[0042] Regarding the backpack 100 of modification 1 according to the present embodiment, the pad 12b includes a projection P2. Thus, it is possible to keep the gasket 12b from sliding outwardly from the inner surface of the rear panel 11 so that it is inserted between the rear panel 11 and the outer layer 12a. The strength of the housing 1 can thus be ensured. In addition, the inner pad 12c is supported by the protruding portion P2 of the pad 12b. Thus, it is possible to keep, by the inner pad 12c, the body P1, and the protruding portion P2, of the pad 12b from deforming due to approaching each other. The strength of the housing 1 can thus be ensured.

[0043] A satchel 100 (see FIGS. 14 and 15) of modification 2 according to the present embodiment has been described. The knapsack 100 of modification 2 according to the present embodiment differs from the above-described knapsack 100 according to the present embodiment mainly in that the previous knapsack 100 contains a reinforced lining 30.

[0044] The knapsack 100 of Modification 2 according to the present embodiment comprises a reinforced liner 30. The reinforced liner 30 is disposed within the inner liner 12c. Reinforced lining 30 covers the inner lining 12c. Reinforced lining 30 covers thread 6 and thread 7. Reinforced lining 30 is not sewn with thread 6 and thread 7. In addition, reinforced lining 30 is located inside the rear panel 11. Reinforced lining 30 covers the inner surface of the rear panel 11.

[0045] The knapsack 100 of modification 2 according to the present embodiment further comprises a reinforced liner disposed within the inner liner 12c. In this way, it is possible to keep the inner pad 12c from being damaged due to contact of the inner pad 12c with textbooks or the like contained in the body 1. The strength of the body 1 can thus be ensured.

[0046] It should be understood that the embodiments disclosed herein are described by way of illustration in all respects, but not to limit the <scope of the invention>. It is intended that the scope of the present invention be defined by the claims, rather than by the description above, and are intended to cover all modifications and variations that are equivalent in meaning and scope to the claims.

List and explanation of the positions indicated in the drawings

[0047] 1 - Housing; 2 - Flap valve; 3 - Belt; 4 -Connecting element; 5 - Reinforcing element; 6, 7 - Thread; 11 - Back panel; 11a - Outer edge; 12 - Insert; 12a - Outer layer; 12b - Gasket; 12c - Inner lining; 13 - Front panel; 30 - Reinforced lining; 100 - Satchel; 121 - Side panel; 122 - Bottom panel; 123 - Side wall; 124 - Flange; IS - Interior space; OP - Opening; P1 - Main part; P2 - Protruding part; P3 - Folded part.

Claims (16)

1. A knapsack containing: a body with an opening; a hinged valve connected to the body so that the opening can be opened or closed; and a pair of shoulder straps attached to the body; wherein the body contains: - a back panel to which one end of each of a pair of shoulder straps and a folding flap are attached; and - an insert attached to the outer edge of the rear panel, the insert comprising: - outer layer; - a gasket located inside the outer layer and having greater bending stiffness than the outer layer; and - an inner lining located inside the gasket and having greater flexural rigidity than the outer layer, while the spacer and the inner liner include a body and a protruding portion extending from the body in a direction away from the outer layer; the main part and the projecting part are supported by the rear panel; the inner lining contains a protruding part; and the curved portion of the inner liner abuts the inner surface of the rear panel, and the spacer extends in a straight line to abut the inner surface of the rear panel. 2. The knapsack according to claim 1, wherein the spacer has greater flexural rigidity than the inner lining. 3. The knapsack according to any one of paragraphs. 1 or 2, further comprising a reinforced liner located within the inner liner.

Images