CN112312796B

CN112312796B - Student backpack

Info

Publication number: CN112312796B
Application number: CN201980041551.3A
Authority: CN
Inventors: 桥本雅敏
Original assignee: Xibo Co ltd
Current assignee: Xibo Co ltd
Priority date: 2018-06-20
Filing date: 2019-06-19
Publication date: 2022-08-23
Anticipated expiration: 2039-06-19
Also published as: JP2019217038A; JP6683764B2; WO2019244925A1; CN112312796A; RU2754660C1

Abstract

The student backpack of the present invention includes a housing, a lid, and a pair of straps. The accommodating portion includes a back portion (11) and a flap portion (12) connected to an outer edge portion (11a) of the back portion (11). The flap (12) comprises: a surface material (12 a); a core (12b) which has higher bending rigidity than the surface material (12a) and is disposed on the inner side of the surface material (12 a); and an inner core (12c) which has higher bending rigidity than the surface material (12a) and is disposed inside the central core (12 b). Either one of the core (12b) and the inner core (12c) includes a main body portion (P1) and a protruding portion (P2) protruding from the main body portion (P1) to the side opposite to the surface material (12 a). The main body part (P1) and the protruding part (P2) are supported by the back part (11).

Description

Student backpack

Technical Field

The invention relates to a student backpack (School Rucksack).

Background

Conventionally, there is a so-called college-type student backpack as a student backpack. In this school-type student backpack, a flap portion of a housing portion that houses a textbook or the like has: a side wall portion surrounding the accommodating space of the accommodating portion; and a protruding portion protruding outward from the side wall portion. The protruding portion is connected to the back of the accommodating portion. This school-type student backpack is described in, for example, japanese utility model application No. 3078744 (patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese Utility model application No. 3078744

Disclosure of Invention

Problems to be solved by the invention

In the student backpack of the college type described above, the protruding portion protrudes outward from the side wall portion, and therefore the outer shape of the back portion becomes larger than that of the side wall portion. Therefore, when the accommodation space surrounded by the side wall portion becomes large, the outer shape of the back portion becomes large, and the accommodation portion becomes large. Therefore, it is difficult to make the accommodating space large while suppressing the accommodating portion from being large. In addition, the protruding portion functions to reinforce the accommodating portion. Therefore, if the extension portion is not provided in order to suppress the increase in size of the housing portion, it is difficult to ensure the strength of the housing portion.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a student backpack which can increase an accommodation space while suppressing an increase in size of an accommodation portion, and can ensure strength of the accommodation portion.

Means for solving the problems

The student backpack of the present invention comprises: an accommodating part provided with an opening part; a lid portion connected to the housing portion so as to be capable of opening and closing the opening portion; and a pair of straps connected to the accommodating portion. The accommodating portion includes: a back part to which one end of each of the pair of straps is connected and to which a cover part is connected; and a flap portion connected to an outer edge portion of the back portion. The flap portion includes: surface material; a core which has higher bending rigidity than the surface material and is disposed inside the surface material; and an inner core having higher bending rigidity than the surface material and disposed inside the core. Either one of the core and the inner core includes: the watch includes a main body and a protruding portion protruding from the main body to the opposite side of the watch material. The main body and the protruding portion are supported by the back portion.

Effects of the invention

According to the student backpack of the present invention, either the core or the inner core includes a protruding portion protruding from the body portion to the opposite side to the surface material. Therefore, the protruding portion does not protrude outward from the surface material. Therefore, the outer shape of the back portion does not become larger than the flap portion, so that the size of the back portion can be maintained and the accommodation space can be made large. This makes it possible to increase the storage space while suppressing the size of the storage section from increasing. Further, the flap portion includes a central core and an inner core. Therefore, the strength of the housing portion can be ensured by both the core and the inner core. The main body and the protruding portion are supported by the back portion. Therefore, the strength of the housing portion can be ensured by the main body portion and the protruding portion.

Drawings

Fig. 1 is a schematic perspective view of a student backpack according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the back and flap of the student backpack shown in fig. 1.

Fig. 3 is a sectional view taken along the line III-III of fig. 1.

Fig. 4 is a sectional view taken along line IV-IV of fig. 1.

Fig. 5 is a development view of the core and the inner core of the flap portion shown in fig. 2.

Fig. 6 is a developed view of a surface material of the flap portion shown in fig. 2.

Fig. 7 is a development view of the flap portion and the reinforcing member shown in fig. 2.

Fig. 8 is a view for explaining the arrangement of the back and the flap shown in fig. 7.

Fig. 9 is a schematic perspective view of a student backpack in the comparative example.

Fig. 10 is a sectional view taken along line X-X of fig. 9.

Fig. 11 is a sectional view taken along line XI-XI of fig. 9.

Fig. 12 is a sectional view of a student backpack of modification 1 of one embodiment of the present invention at a position corresponding to fig. 3.

Fig. 13 is a sectional view of a student backpack of modification 1 of one embodiment of the present invention at a position corresponding to fig. 4.

Fig. 14 is a sectional view of a student backpack of modification 2 of an embodiment of the present invention at a position corresponding to fig. 3.

Fig. 15 is a sectional view of a student backpack of modified example 2 of one embodiment of the present invention at a position corresponding to fig. 4.

Detailed Description

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding portions are denoted by the same reference numerals, and repetitive description will not be repeated.

First, a structure of a student backpack according to an embodiment of the present invention will be described.

Referring to fig. 1 and 2, the student backpack 100 in the present embodiment mainly includes: a housing portion 1, a lid portion 2, a pair of straps 3, a connecting member 4, and a reinforcing member 5.

The housing portion 1 has: a back portion 11, a flap portion 12 and a front portion 13. The housing 1 is provided with an opening OP. The housing 1 has an opening OP at an upper end. The housing portion 1 has a housing space IS communicating with the opening portion OP. The housing space IS a space surrounded by the inner peripheral surfaces of the back portion 11, the flap portion 12, and the front portion 13. The accommodating portion 1 IS configured to be able to accommodate a textbook or the like in the accommodating space IS through the opening OP.

One end of each of the pair of back bands 3 is connected to the back portion 11. The back portion 11 is connected to the lid portion 2. The back portion 11 is equipped with a coupling member 4. The pair of straps 3 are connected to the back portion 11 via connecting members 4, respectively. The reinforcing member 5 is fitted to the back portion 11 and the flap portion 12.

The flap 12 is connected to the outer edge 11a of the back 11. The flap portion 12 is connected to an outer edge portion 11a of the back portion 11 except for a central portion of an upper end portion. That is, the flap portion 12 is connected to the outer edge portion 11a of the back portion 11 in a U-shape.

The flap 12 has a pair of side portions 121 and a bottom portion 122. The pair of side portions 121 are disposed opposite to each other with the bottom portion 122 interposed therebetween. The pair of side portions 121 are each configured to rise from both ends of the bottom portion 122. The bottom portion 122 is disposed opposite to the opening OP.

The lid 2 is connected to the housing 1 so as to be openable and closable with the opening OP. Specifically, the lid portion 2 is connected to the upper end of the back portion 11 of the housing portion 1, and is configured to be able to open and close the opening OP with the upper end of the back portion 11 as a base end. The lid 2 is configured to cover the opening OP and the front portion 13 of the housing 1 in the closed state shown in fig. 1. The lid portion 2 is configured to be able to expose the opening OP and the front portion 13 of the housing portion 1 in an open state.

The pair of straps 3 are connected to the housing portion 1. Specifically, one end of each of the pair of back bands 3 is connected to the upper end of the back portion 11 via the connecting member 4. In fig. 1, for convenience of explanation, only the peripheries of one end of each of the pair of back bands 3 are shown, and the parts other than the peripheries of the one end are not shown. The other ends of the pair of straps 3 are connected to the bottom portion 122 of the flap portion 12 via a connecting member, not shown. One pair of straps 3 are provided on each of the left and right sides. The pair of straps 3 are configured to be attached to both shoulders of the user when the user is carrying the student backpack 100.

The reinforcing member 5 is disposed at a corner of the housing portion 1 on the back portion 11 side at the lower portion of the housing portion 1. The reinforcing member 5 extends along the lower end of the back portion 11 to extend along the pair of side portions 121. The reinforcing member 5 extends so as to stand upward from the lower end portion of the back portion 11 along each of the pair of side portions 121. The reinforcing member 5 is disposed so as to extend to each of the back portion 11 and the pair of side portions 121, and is disposed so as to extend to the back portion 11 and the bottom portion 122.

Next, the structure of the back portion 11 and the flap portion 12 will be described in detail.

Referring to fig. 2 and 3, the flap portion 12 includes a skin 12a, a core 12b, and an inner core 12 c. The surface sheet 12a, the core 12b, and the inner core 12c overlap each other. The surface material 12a, the core 12b, and the core 12c are arranged in this order from the outside toward the inside.

The surface material 12a constitutes the outer surface of the flap portion 12. The material of the surface material 12a is, for example, artificial leather or cowhide. The core 12b has higher bending rigidity than the surface material 12 a. The core 12b is made of a material different from the surface material 12 a. The material of the core 12b may be, for example, resin, specifically, resin foam in which polyethylene terephthalate fibers and polyester resin are mixed as main components. The core 12b is disposed inside the surface material 12 a. The inner core 12c has higher bending rigidity than the surface material 12 a. The core 12c is made of a material different from the skin 12 a. The material of the core 12c may be, for example, resin, specifically, resin foam in which polyethylene terephthalate fibers and a polyester resin are mixed as main components. The material of the inner core 12c may be, specifically, a laminate of a resin containing pulp and an acrylic resin as main components and the resin foam. The inner core 12c is disposed inside the core 12 b.

It is also possible that the central core 12b has the same bending rigidity as the inner core 12 c. The core 12b may be made of the same material as the core 12c, or may have the same thickness as the core 12 c. Further, it is preferable that the central core 12b has higher bending rigidity than the inner core 12 c. In this case, the core 12b may be made of a material different from that of the core 12c, or may be thicker than the core 12 c.

Either one of the core 12b and the inner core 12c includes a main body portion P1 and a protrusion portion P2. In the present embodiment, the inner core 12c includes a main body portion P1 and a protrusion portion P2. The protruding portion P2 is configured to protrude from the body portion P1 to the side opposite to the surface material 12 a. The protruding portion P2 is disposed at the end of the body portion P1 on the back 11 side. That is, a bent portion bent inward is provided at the rear edge portion of the inner core 12 c. The main body portion P1 and the protruding portion P2 are supported by the back portion 11. That is, the bent portion of the core 12c abuts the inner surface of the back portion 11. In the present embodiment, the core 12b stands upright on the inner surface of the back 11.

The surface material 12a, the core 12b, and the core 12c are sewn together in a state of being overlapped with each other. That is, the surface material 12a, the core 12b, and the inner core 12c are sewn together with a thread penetrating through each of them in a state of being overlapped with each other.

Specifically, the surface material 12a has the folded portion P3 that has been subjected to the burring process. The bent portion P3 overlaps the outer surface of the outer edge 11a of the back portion 11. The outer edge 11a of the back 11 is sandwiched between the bent portion P3 of the surface material 12a and the protruding portion P2 of the core 12 c. In a state where the outer edge portion 11a of the back portion 11 is sandwiched by the bent portion P3 of the surface material 12a and the projecting portion P2 of the core 12c, the bent portion P3 of the surface material 12a, the outer edge portion 11a of the back portion 11, and the projecting portion P2 of the core 12c are integrally sewn together with the thread 6. The main body portion P1 of the surface material 12a, the core 12b, and the inner core 12c are integrally sewn together with the thread 7.

Referring to fig. 4, the reinforcing member 5 is disposed at a corner on the back 11 side of the housing portion 1 so as to cover the surface material 12a from the outside. The bent portion P3 of the surface material 12a is sandwiched between the reinforcing member 5 and the back portion 11. In a state where the bent portion P3 of the surface material 12a and the outer edge portion 11a of the back portion 11 are sandwiched by the reinforcement member 5 and the projecting portion P2 of the core 12c, the reinforcement member 5, the bent portion P3 of the surface material 12a, the outer edge portion 11a of the back portion 11, and the projecting portion P2 of the core 12c are integrally sewn together with the thread 6. Further, the reinforcing member 5, the surface material 12a, the core 12b, and the main body portion P1 of the core 12c are integrally sewn with the thread 7.

The arrangement of the back portion 11 and the flap portion 12 will be described in further detail with reference to fig. 5 to 8. For convenience of explanation, fig. 5 to 8 illustrate a state in which the flap portion 12 is unfolded. Referring to fig. 5, the core 12b overlaps the core 12c along the boundary line between the main portion P1 and the protrusion portion P2 of the core 12 c. The outer shape of the core 12b is smaller than that of the inner core 12 c. The projecting portion P2 is disposed so as to extend in the longitudinal direction at one end in the longitudinal direction of the inner core 12 c. The inner core 12c has a notch 20. The notch 20 is provided at the edge of the projection P2 extending in the longitudinal direction. Two notches 20 are provided at the center in the longitudinal direction of the projecting portion P2. The notch 20 is formed in a zigzag shape. The projection P2 of the core 12c can be easily bent by the notch 20.

Referring to fig. 6, a bent portion P3 is disposed so as to extend in the longitudinal direction at one end in the short-side direction of the surface material 12 a. Referring to fig. 7, the surface material 12a, the central core 12b, and the inner core 12c are overlapped with each other. Further, the reinforcing member 5 is overlapped on the surface material 12a from the opposite side to the core 12 b. The reinforcing member 5 is disposed at the center in the longitudinal direction of the surface material 12a, and is disposed so as to overlap the cutout portion 20. Referring to fig. 8, the back portion 11 is positioned at the flap portion 12 such that the bent portion P3 of the surface material 12a is positioned at the outer edge portion 11a of the back portion 11. The back 11 is positioned at the flap 12 so that a corner portion of the lower end of the back 11 overlaps the notch 20.

Next, the operation and effect of the student backpack 100 in the present embodiment will be described in comparison with a comparative example.

Referring to fig. 9, the student backpack 100 of the comparative example is a so-called college-type student backpack 100. In the student backpack 100 of the comparative example, the flap portion 12 has: a side wall portion 123 surrounding the accommodation space IS of the accommodation portion 1; and an extension portion 124 projecting outward from the side wall portion 123. The extension 124 is connected to the outer edge 11a of the back 11 of the housing 1. The extension portion 124 and the outer edge portion 11a are covered with the gusset material 8 from the outside.

Referring to fig. 10 and 11, the protruding portion 124 includes: a first protruding member 124a and a second protruding member 124 b. The surface material 12a has a first protruding member 124 a. The first protruding member 124a is disposed at the end of the back 11 side of the surface material 12 a. The core 12b has a second projecting member 124 b. The second protruding member 124b is disposed at the end of the core 12b on the back 11 side. The first and second protruding

members

124a and 124b are configured to protrude toward the opposite side from the inner core 12 c.

Referring to fig. 9 to 11, in the student backpack 100 of the comparative example, the extension portion 124 extends outward from the side wall portion 123, and therefore the outer shape of the back portion 11 becomes larger than the side wall portion 123. Therefore, when the accommodation space IS surrounded by the side wall portion 123 becomes larger, the outer shape of the back portion 11 also becomes larger, and the accommodation portion 1 becomes larger. Therefore, it IS difficult to make the accommodating space IS large while suppressing the accommodating portion 1 from being large. Further, the protruding portion 124 functions to reinforce the accommodating portion 1. Therefore, if the extension portion 124 is not provided in order to suppress the increase in size of the housing portion 1, it is difficult to secure the strength of the housing portion 1.

In contrast, according to the student backpack 100 of the present embodiment, as shown in fig. 1 and 3, either one of the core 12b and the inner core 12c includes a protruding portion P2 that protrudes from the body portion P1 to the side opposite to the surface material 12 a. Therefore, the projecting portion P2 does not project outward from the surface material 12 a. Therefore, the outer shape of the back portion 11 does not become larger than the flap portion 12, so that the size of the back portion 11 can be maintained and the accommodation space IS can be made large. This makes it possible to increase the storage space IS while suppressing the size of the storage section 1 from increasing. Further, the flap portion 12 includes a central core 12b and an inner core 12 c. Therefore, the strength of the housing portion 1 can be ensured by both the core 12b and the inner core 12 c. The main body portion P1 and the protruding portion P2 are supported by the back portion 11. Therefore, the strength of the housing part 1 can be ensured by the main body part P1 and the protruding part P2.

Further, the flap portion 12 includes a central core 12b and an inner core 12 c. Therefore, the strength of the core 12b and the inner core 12c can be adjusted separately. Therefore, the strength of the housing portion 1 can be easily adjusted.

In addition, according to the student backpack 100 of the present embodiment, since the back part 11 is sandwiched by the bent part P3 and the protruding part P2 of the surface material 12a, the corner material 8 of the comparative example is not required. Since the corner material 8, which is a separate member from the surface material 12a, is not required, the number of members can be reduced. Therefore, productivity can be improved.

Referring to fig. 1 and 4, the student backpack 100 of the present embodiment includes a reinforcing member 5. Therefore, the strength of the housing portion 1 can be further ensured by the reinforcing member 5.

Referring to fig. 1 and 3, according to the student backpack 100 of the present embodiment, the inner core 12c includes the protrusion P2. Therefore, it becomes easy to sandwich the core 12b between the core 12c and the surface material 12a and sew them together.

According to the student backpack 100 of the present embodiment, the center core 12b can be more rigid to bend than the inner core 12 c. This makes it easy to secure the strength of the housing portion 1 by the core 12 b.

Next, the student backpack 100 according to modified examples 1 and 2 of the present embodiment will be described.

A student backpack 100 according to modification 1 of the present embodiment will be described with reference to fig. 12 and 13. In the student backpack 100 according to modification 1 of the present embodiment, the configurations of the core 12b and the core 12c are mainly different from those of the student backpack 100 according to the present embodiment described above.

In the student backpack 100 according to modification 1 of the present embodiment, the core 12b includes a body portion P1 and a protruding portion P2. The projecting portion P2 is configured to project from the body portion P1 to the side opposite to the surface material 12a beyond the inner core 12 c. A bent portion is provided at the rear edge portion of the core 12 b. The bent portion of the core 12b abuts against the inner surface of the back portion 11. The inner core 12c is supported by the protrusion P2 of the central core 12 b. The inner core 12c stands straight on the inner surface of the projection P2. That is, the inner core 12c does not include the projection P2.

Referring to fig. 12, the outer edge 11a of the back 11 is sandwiched between the bent portion P3 of the surface material 12a and the protruding portion P2 of the core 12 b. In a state where the outer edge portion 11a of the back portion 11 is sandwiched by the bent portion P3 of the surface material 12a and the projected portion P2 of the core 12b, the bent portion P3 of the surface material 12a, the outer edge portion 11a of the back portion 11, and the projected portion P2 of the core 12b are integrally sewn together with the thread 6. The surface material 12a, the body portion P1 of the core 12b, and the inner core 12c are integrally sewn together with the thread 7.

Referring to fig. 13, in a state where the bent portion P3 of the surface material 12a and the outer edge portion 11a of the back portion 11 are sandwiched by the reinforcing member 5 and the projecting portion P2 of the core 12b, the reinforcing member 5, the bent portion P3 of the surface material 12a, the outer edge portion 11a of the back portion 11, and the projecting portion P2 of the core 12b are integrally sewn together by the thread 6. The reinforcing member 5, the surface material 12a, the main body portion P1 of the core 12b, and the core 12c are integrally sewn together with the thread 7.

According to the student backpack 100 of modification 1 of the present embodiment, the center core 12b includes the protruding portion P2. Therefore, the core 12b can be prevented from coming off the inner surface of the back portion 11 to the outside and entering between the back portion 11 and the surface material 12 a. This ensures the strength of the housing portion 1. Further, the inner core 12c is supported by the protruding portion P2 of the core 12 b. Therefore, the deformation of the main body portion P1 and the protruding portion P2 of the core 12b to approach each other can be suppressed by the core 12 c. This ensures the strength of the housing portion 1.

A student backpack 100 according to modification 2 of the present embodiment will be described with reference to fig. 14 and 15. The student backpack 100 according to modification 2 of the present embodiment differs from the student backpack 100 according to the present embodiment described above mainly in that it includes the padding 30.

The student backpack 100 according to modified example 2 of the present embodiment includes a padding 30. The lining material 30 is disposed inside the core 12 c. The liner 30 surrounds the core 12 c. The liner 30 covers the

wires

6 and 7. The liner 30 is not stitched with the thread 6 and the thread 7. The backing material 30 is disposed inside the back 11. The backing material 30 covers the inner surface of the back 11.

The student backpack 100 according to modified example 2 of the present embodiment further includes a lining material disposed inside the core 12 c. Therefore, the core 12c can be prevented from being damaged by the textbook or the like accommodated in the accommodating portion 1 contacting the core 12 c. This ensures the strength of the housing portion 1.

The embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not by the description above, and is intended to include all modifications within the meaning and scope equivalent to the claims.

Description of the reference numerals

1: an accommodating portion; 2: a cover portion; 3: a belt; 4: a connecting member; 5: a reinforcing member; 6. 7: a wire; 11: a back; 11 a: an outer edge portion; 12: a flap portion; 12 a: surface material; 12 b: a core; 12 c: an inner core; 13: a front face portion; 30: a lining material; 100: a student backpack; 121: a side portion; 122: a bottom; 123: a sidewall portion; 124: a protruding portion; IS: an accommodating space; OP: an opening part; p1: a main body portion; p2: a protrusion; p3: a bending part.

Claims

1. A student backpack is provided with:

a housing part provided with an opening part;

a lid portion connected to the housing portion so as to be capable of opening and closing the opening portion; and

a pair of straps connected to the accommodating part,

the accommodating portion includes: a back portion to which one end of each of the pair of straps is connected and to which the cover portion is connected; and a flap portion connected to an outer edge portion of the back portion,

the flap portion includes: surface material; a core having higher bending rigidity than the surface material and disposed inside the surface material; and an inner core having higher bending rigidity than the surface material and disposed inside the core,

only either one of the core and the inner core includes: a main body and a protrusion protruding from the main body to the opposite side of the surface material,

the main body portion and the protruding portion are supported by the back portion,

the inner core includes the protrusion portion and the protrusion portion,

the bent portion of the inner core abuts against the inner surface of the back portion, and the center core stands upright on the inner surface of the back portion.

2. The student backpack of claim 1,

the central core has a higher flexural rigidity than the inner core.

3. The student backpack according to any one of claims 1-2,

the core is further provided with a lining material arranged on the inner side of the core.