JP2019217038A - Satchel - Google Patents

Abstract

To provide a satchel that can increase a storage space while suppressing expansion of the storage part and that can also secure strength of the storage part.SOLUTION: The satchel has a storage part, a lid part, and a pair of shoulder belts. The storage part 1 includes a back part 11, and a gusset part 12 that is connected to the outer edge part 11a of the back part 11. The gusset part 12 includes: a surface fabric 12a; a center core 12b that has higher bending rigidity than the surface fabric 12a and that is arranged inside of the surface fabric 12a; and an inner core 12c that has higher bending rigidity than the surface fabric 12a and that is arranged inside of the center core 12b. Either the center core 12b or the inner core 12c includes a body part P1 and a projection part P2 that protrudes from a body part P1 to the opposite side of the surface fabric 12a. The body part P1 and the projection part P2 are supported by the back part 11.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a school bag.

  Conventionally, there is a so-called Gakushuin school type schoolbag. In this Gakushuin school bag, the gusset part of the accommodation part for accommodating a textbook or the like has a side wall part surrounding the accommodation space of the accommodation part, and an overhang part protruding outward from the side wall part. The overhang is connected to the back of the housing. This school-in-school school bag is described in, for example, Japanese Utility Model Registration No. 3078744 (Patent Document 1).

Japanese Utility Model Registration No. 3078744

  In the above-mentioned Gakushuin school bag, since the overhanging portion projects outward from the side wall portion, the outer shape of the back portion is larger than that of the side wall portion. Therefore, when the accommodation space surrounded by the side wall part becomes large, the outer shape of the back part also becomes large, so that the accommodation part becomes large. For this reason, it is difficult to enlarge the accommodation space while suppressing the accommodation portion from becoming large. In addition, the overhang portion plays a role of reinforcing the accommodation portion. Therefore, it is difficult to secure the strength of the housing portion unless the overhang portion is provided in order to suppress the housing portion from becoming large.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a school bag which can increase the accommodation space while suppressing the enlargement of the accommodation part and can secure the strength of the accommodation part. That is.

  The school bag according to the present invention includes a storage unit provided with an opening, a lid connected to the storage unit so that the opening can be opened and closed, and a pair of shoulder belts connected to the storage unit. The accommodating portion includes a back portion to which one end of each of the pair of backpacks is connected and a lid portion is connected, and a gusset portion connected to an outer edge of the back portion. The gusset part includes a dress material, a core having higher bending rigidity than the dress material and arranged inside the dress material, and an inner core having higher bending rigidity than the dress material and arranged inside the core material. Either the center core or the inner core includes a main body, and a protruding portion protruding from the main body to the side opposite to the outer material. The main body and the protrusion are supported by the back.

  According to the school bag of the present invention, either the center core or the inner core includes the protruding portion protruding from the main body to the side opposite to the outer material. For this reason, the protrusion does not protrude outward from the outer material. Therefore, since the outer shape of the back portion is not larger than the gusset portion, the accommodation space can be enlarged while maintaining the size of the back portion. Therefore, the accommodation space can be enlarged while suppressing an increase in the accommodation portion. In addition, the gusset part includes a core and an inner core. For this reason, the strength of the storage portion can be ensured by both the core and the core. Further, the main body and the protrusion are supported by the back. For this reason, the strength of the housing portion can be ensured by the main body and the protruding portion.

1 is a schematic perspective view of a school bag according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a back portion and a gusset portion of the school bag shown in FIG. 1. FIG. 3 is a cross-sectional view along the line III-III in FIG. 1. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1. FIG. 3 is a development view of a center and an inner core of the gusset shown in FIG. 2. FIG. 3 is a development view of a surface material of a gusset part shown in FIG. 2. FIG. 3 is a development view of a gusset part and a reinforcing member shown in FIG. 2. It is a figure for demonstrating the arrangement | positioning of a back part and a gusset part shown in FIG. FIG. 4 is a schematic perspective view of a school cell in a comparative example. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which follows the XI-XI line of FIG. FIG. 4 is a cross-sectional view of a land cell according to a first modification of the embodiment of the present invention at a position corresponding to FIG. 3. FIG. 5 is a cross-sectional view of a land cell according to a first modification of the embodiment of the present invention at a position corresponding to FIG. FIG. 5 is a cross-sectional view of a school cell according to a second modification of the embodiment at a position corresponding to FIG. 3. FIG. 5 is a cross-sectional view of a land cell according to a second modification of the embodiment of the present invention at a position corresponding to FIG. 4.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding portions will be denoted by the same reference characters, without redundant description.

First, a configuration of a school cell according to an embodiment of the present invention will be described.
Referring to FIG. 1 and FIG. 2, school bag 100 in the present embodiment mainly includes accommodation section 1, lid section 2, pair of backing belts 3, connecting member 4, and reinforcing member 5. ing.

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

  One end of each of the pair of shoulder belts 3 is connected to the back part 11. The lid 2 is connected to the back 11. The connecting member 4 is attached to the back portion 11. Each of the pair of shoulder belts 3 is connected to the back part 11 via the connecting member 4. The reinforcing member 5 is attached to the back portion 11 and the gusset portion 12.

  The gusset part 12 is connected to the outer edge part 11a of the back part 11. The gusset part 12 is connected to the outer edge part 11a except the center part of the upper end part of the back part 11. That is, the gusset part 12 is connected to the outer edge part 11a of the back part 11 in a U-shape.

  The gusset part 12 has a pair of side parts 121 and a bottom part 122. The pair of side parts 121 are arranged so as to face each other with the bottom part 122 interposed therebetween. Each of the pair of side parts 121 is configured to rise from both ends of the bottom part 122. The bottom 122 is arranged so as to face the opening OP.

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

  The pair of shoulder belts 3 are connected to the housing 1. Specifically, one end of each of the pair of shoulder belts 3 is connected to the upper end of the back part 11 via the connecting member 4. In FIG. 1, for convenience of description, only the vicinity of one end of each of the pair of backing belts 3 is illustrated, and other portions than the periphery of one end are not illustrated. The other end of each of the pair of backpacks 3 is connected to the bottom 122 of the gusset 12 via a connection member (not shown). The pair of shoulder belts 3 are provided one by one on the left and right. The pair of shoulder belts 3 is configured to be worn on both shoulders of the user when the user carries the school bag 100.

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

Subsequently, the configuration of the back portion 11 and the gusset portion 12 will be described in detail.
Referring to FIG. 2 and FIG. 3, gusset portion 12 includes outer material 12 a, middle core 12 b, and inner core 12 c. The outer material 12a, the inner core 12b, and the inner core 12c are overlapped with each other. The outer material 12a, the core 12b, and the inner core 12c are arranged in this order from the outside to the inside.

  The outer material 12a forms an outer surface of the gusset portion 12. The material of the outer material 12a is, for example, artificial leather or cowhide. The center core 12b has higher bending rigidity than the outer material 12a. The core 12b is made of a material different from the outer material 12a. The material of the core 12b is, for example, a resin, and specifically, may be a foamed resin in which polyethylene terephthalate fiber and a polyester resin are mixed as main components. The core 12b is arranged inside the outer material 12a. The inner core 12c has higher bending rigidity than the outer material 12a. The inner core 12c is made of a different material from the outer material 12a. The material of the inner core 12c is, for example, a resin, and specifically, may be a foamed resin in which polyethylene terephthalate fiber and a polyester resin are mixed as main components. In addition, the material of the inner core 12c may be a material obtained by laminating a resin in which pulp and an acrylic resin are mixed as main components, and the foamed resin. The inner core 12c is disposed inside the inner core 12b.

  The core 12b may have the same bending rigidity as the core 12c. The core 12b may be made of the same material as the core 12c, and may have the same thickness as the core 12c. The core 12b preferably has a higher bending rigidity than the core 12c. In this case, the core 12b may be made of a material different from the material of the inner core 12c, and may have a larger thickness than the inner core 12c.

  One of the core 12b and the core 12c includes a main body P1 and a protruding part P2. In the present embodiment, the inner core 12c includes a main body part P1 and a protruding part P2. The protruding portion P2 is configured to protrude from the main body portion P1 to the side opposite to the outer material 12a. The protruding portion P2 is disposed at an end on the back portion 11 side of the main body portion P1. That is, a bent portion that is bent inward is provided on the rear side of the inner core 12c. The main body part P1 and the protruding part P2 are supported by the back part 11. That is, the bent portion of the inner core 12c is in contact with the inner surface of the back portion 11. In the present embodiment, the core 12b is protruded straight on the inner surface of the back portion 11.

  The outer material 12a, the inner core 12b, and the inner core 12c are sewn in a state where they are overlapped with each other. That is, the outer material 12a, the center core 12b, and the inner core 12c are sewn so that a thread passes through each of them in a state of being overlapped with each other.

  Specifically, the outer material 12a has a folded portion P3 that is turned over. The bent part P3 is overlapped on the outer surface of the outer edge part 11a of the back part 11. The outer edge 11a of the back 11 is sandwiched between the bent portion P3 of the outer material 12a and the protrusion P2 of the inner core 12c. With the outer edge 11a of the back portion 11 sandwiched between the bent portion P3 of the outer material 12a and the protrusion P2 of the inner core 12c, the bent portion P3 of the outer material 12a, the outer edge 11a of the back portion 11, and the inner core 12c. Are integrally sewn with the thread 6. The outer material 12a, the core 12b, and the body P1 of the inner core 12c are integrally sewn with the thread 7.

  Referring to FIG. 4, reinforcing member 5 is arranged at a corner on the back 11 side of accommodation portion 1 so as to cover outer material 12a from the outside. The bent portion P3 of the outer material 12a is sandwiched between the reinforcing member 5 and the back portion 11. In a state where the bent portion P3 of the outer material 12a and the outer edge portion 11a of the back portion 11 are sandwiched between the reinforcing member 5 and the protruding portion P2 of the inner core 12c, the reinforcing member 5, the bent portion P3 of the outer material 12a, and the back portion are sandwiched. The outer edge 11a of the eleventh portion and the protrusion P2 of the inner core 12c are integrally sewn with the thread 6. Further, the reinforcing member 5, the outer material 12a, the center core 12b, and the main body portion P1 of the inner core 12c are integrally sewn with the thread 7.

  The arrangement of the back portion 11 and the gusset portion 12 will be described in further detail with reference to FIGS. 5 to 8 show a state where the gusset part 12 is expanded for convenience of explanation. Referring to FIG. 5, a core 12b is overlaid on the inner core 12c along a boundary between the main body part P1 and the protruding part P2 of the inner core 12c. The outer shape of the core 12b is smaller than the outer shape of the inner core 12c. A protruding portion P2 is arranged at one end in the short direction of the inner core 12c so as to extend in the longitudinal direction. The inner core 12c has a notch 20. The notch 20 is provided on an edge of the protrusion P2 extending in the longitudinal direction. Two notches 20 are provided at the center of the protrusion P2 in the longitudinal direction. The notch 20 has a saw-tooth shape. The notch 20 facilitates bending the protruding portion P2 of the inner core 12c.

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

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

  Referring to FIG. 9, school bag 100 in the comparative example is a so-called Gakushuin school bag. In the school bag 100 of the comparative example, the gusset part 12 has a side wall part 123 surrounding the housing space IS of the housing part 1 and a projecting part 124 protruding outward from the side wall part 123. The overhang 124 is connected to the outer edge 11 a of the back 11 of the housing 1. The overhang portion 124 and the outer edge portion 11a are covered with the square fabric 8 from the outside.

  Referring to FIG. 10 and FIG. 11, the overhang portion 124 includes a first overhang member 124a and a second overhang member 124b. The outer material 12a has a first overhanging member 124a. The first overhanging member 124a is arranged at an end on the back 11 side of the outer material 12a. The core 12b has a second overhang member 124b. The second overhanging member 124b is arranged at the end of the center core 12b on the back 11 side. The first overhanging member 124a and the second overhanging member 124b are configured to overhang on the side opposite to the inner core 12c.

  With reference to FIGS. 9 to 11, in the school bag 100 of the comparative example, since the projecting portion 124 projects outward from the side wall portion 123, the outer shape of the back portion 11 is larger than that of the side wall portion 123. Therefore, when the accommodation space IS surrounded by the side wall part 123 becomes large, the outer shape of the back part 11 also becomes large, so that the accommodation part 1 becomes large. For this reason, it is difficult to enlarge the accommodation space IS while suppressing the accommodation portion 1 from becoming large. Further, the overhang portion 124 plays a role of reinforcing the housing portion 1. Therefore, it is difficult to secure the strength of the accommodation unit 1 unless the overhanging portion 124 is provided to suppress the accommodation unit 1 from becoming large.

  On the other hand, according to the school bag 100 in the present embodiment, as shown in FIGS. 1 and 3, one of the center core 12b and the inner core 12c protrudes from the main body P1 to the opposite side to the outer material 12a. Including a protruding portion P2. Therefore, the protruding portion P2 does not protrude outward from the outer material 12a. Therefore, the outer shape of the back portion 11 is not larger than that of the gusset portion 12, so that the accommodation space IS can be enlarged while maintaining the size of the back portion 11. Therefore, the accommodation space IS can be enlarged while suppressing the accommodation portion 1 from becoming large. The gusset part 12 includes a core 12b and an inner core 12c. Therefore, the strength of the housing portion 1 can be secured by both the core 12b and the core 12c. Further, the main body portion P1 and the protruding portion P2 are supported by the back portion 11. For this reason, the strength of the housing portion 1 can be ensured by the main body portion P1 and the projecting portion P2.

  The gusset part 12 includes a core 12b and an inner core 12c. For this reason, the strength can be adjusted separately for the core 12b and the core 12c. Therefore, the adjustment of the strength of the storage section 1 becomes easy.

  Further, according to the school bag 100 in the present embodiment, the back portion 11 is sandwiched between the bent portion P3 and the protruding portion P2 of the outer material 12a, so that the corner cloth 8 of the comparative example is unnecessary. Since the corner cloth 8, which is a separate member from the outer material 12a, becomes unnecessary, the number of members can be reduced. Therefore, productivity can be improved.

  Referring to FIGS. 1 and 4, school bag 100 in the present embodiment includes reinforcing member 5. Therefore, the strength of the housing portion 1 can be further secured by the reinforcing member 5.

  Referring to FIGS. 1 and 3, according to school bag 100 in the present embodiment, inner core 12c includes a protruding portion P2. For this reason, it becomes easy to sandwich the core 12b between the inner core 12c and the outer material 12a and to sew each other.

  According to school bag 100 in the present embodiment, middle core 12b may have higher bending rigidity than inner core 12c. Thereby, it is easy to secure the strength of the storage section 1 by the core 12b.

  Next, the school cells 100 of the first and second modifications of the present embodiment will be described.

  With reference to FIG. 12 and FIG. 13, a description will be given of a school cell 100 of a first modification of the present embodiment. In the land cell 100 of the first modification of the present embodiment, the configuration of the middle core 12b and the inner core 12c is mainly different from that of the above-described land cell 100 of the present embodiment.

  In the land cell 100 of Modification 1 of the present embodiment, the core 12b includes a main body P1 and a protruding portion P2. The protruding portion P2 is configured to protrude beyond the inner core 12c from the main body portion P1 to a side opposite to the outer material 12a. A bent portion is provided on the rear side of the core 12b. The bent portion of the core 12b is in contact with the inner surface of the back portion 11. The inner core 12c is supported by the protrusion P2 of the inner core 12b. The inner core 12c is protruded straight on the inner surface of the protrusion P2. That is, the inner core 12c does not include the protrusion P2.

  Referring to FIG. 12, outer edge portion 11a of back portion 11 is sandwiched between bent portion P3 of outer material 12a and projecting portion P2 of center core 12b. With the outer edge portion 11a of the back portion 11 sandwiched between the bent portion P3 of the outer material 12a and the protruding portion P2 of the core 12b, the bent portion P3 of the outer material 12a, the outer edge 11a of the back portion 11, and the core 12b. Are integrally sewn with the thread 6. Further, the outer material 12a, the main body portion P1 of the middle core 12b, and the inner core 12c are integrally sewn with the thread 7.

  Referring to FIG. 13, in a state where the bent portion P3 of the outer material 12a and the outer edge portion 11a of the back portion 11 are sandwiched between the reinforcing member 5 and the protrusion P2 of the core 12b, the reinforcing member 5 and the outer material 12a are sandwiched. The bent part P3, the outer edge part 11a of the back part 11, and the protruding part P2 of the inner core 12c are integrally sewn with the thread 6. The reinforcing member 5, the outer material 12a, the main body P1 of the core 12b, and the inner core 12c are integrally sewn with the thread 7.

  According to the land cell 100 of Modification 1 of the present embodiment, the core 12b includes the protruding portion P2. For this reason, it is possible to prevent the center core 12b from coming off from the inner surface of the back portion 11 and entering between the back portion 11 and the outer material 12a. Thereby, the strength of the storage section 1 can be ensured. The inner core 12c is supported by the protruding portion P2 of the middle core 12b. Therefore, the inner core 12c can prevent the main body P1 and the protruding portion P2 of the core 12b from being deformed so as to approach each other. Thereby, the strength of the storage section 1 can be ensured.

  With reference to FIG. 14 and FIG. 15, a description will be given of a school cell 100 of a second modification of the present embodiment. The land cell 100 of the second modification of the present embodiment is mainly different from the land cell 100 of the above-described embodiment in that a backing 30 is provided.

  The school bag 100 according to the second modification of the present embodiment includes a lining 30. The lining 30 is arranged inside the inner core 12c. The lining 30 covers the inner core 12c. The lining 30 covers the yarn 6 and the yarn 7. The lining 30 is not sewn by the thread 6 and the thread 7. Further, the lining 30 is arranged inside the back portion 11. The lining 30 covers the inner surface of the back 11.

  The school cell 100 of the first modification of the present embodiment further includes a lining disposed inside the inner core 12c. Therefore, it is possible to prevent the inner core 12c from being damaged due to the textbook or the like stored in the housing portion 1 coming into contact with the inner core 12c. Thereby, the strength of the storage section 1 can be ensured.

  The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 accommodating part, 2 lid part, 3 belt, 4 connecting member, 5 reinforcing member, 6,7 thread, 11 back, 11a outer rim, 12 gusset, 12a dress material, 12b core, 12c inner core, 13 front, 30 lining, 100 school bags, 121 side, 122 bottom, 123 side wall, 124 overhang, IS accommodating space, OP opening, P1 main body, P2 protrusion, P3 bent.

The school bag according to the present invention includes a storage unit having an opening, a lid connected to the storage unit so that the opening can be opened and closed, and a pair of shoulder belts connected to the storage unit. The accommodating portion includes a back portion to which one end of each of the pair of backpacks is connected and a lid portion is connected, and a gusset portion connected to an outer edge of the back portion. The gusset portion includes a dress material, a core having a higher bending rigidity than the dress material and arranged inside the dress material, and an inner core having a higher bending rigidity than the dress material and arranged inside the core material. Only one of the center core and the inner core includes a main body, and a protruding portion protruding from the main body to the side opposite to the outer material. The main body and the protrusion are supported by the back. The inner core includes a protrusion. The bent portion of the inner core is in contact with the inner surface of the back, and the inner core is protruded straight on the inner surface of the back.

Claims (5)

A housing section provided with an opening,
A lid connected to the housing so that the opening can be opened and closed,
A pair of backing belts connected to the housing portion,
The housing portion includes a back portion to which one end of each of the pair of backpacks is connected and the lid portion is connected, and a gusset portion connected to an outer edge of the back portion,
The gusset portion, the outer material, the bending rigidity is higher than the outer material and a core arranged inside the outer material, and the inner rigidity is higher bending rigidity than the outer material and the inner core arranged inside the inner material. Including
Either the center core or the inner core includes a main body, and a protruding portion protruding from the main body to the opposite side to the dress material,
The school bag, wherein the main body and the protrusion are supported by the back.   The school bag according to claim 1, wherein the inner core includes the protrusion. The core includes the protrusion,
The school bag according to claim 1, wherein the inner core is supported by the protrusion.   The school bag according to any one of claims 1 to 3, wherein the center core has a higher bending rigidity than the inner core.   The school bag according to any one of claims 1 to 4, further comprising a lining arranged inside the inner core.

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