JP2020000781A - Satchel - Google Patents

Abstract

To provide a satchel that reduces a load on the waist of a schoolchild by installing a cushion part in the lower end of a back plate while planning light weight and reduction in cost.SOLUTION: In the satchel, a main storage chamber 10 is formed using: a back plate 11 integrally provided with a bendable bottom plate part 13 in the lower part of a flat back plate part 12 in which a cushion part 15 of an arbitrary shape is arranged on the surface; a surface base plate 21 which is formed in a bendable manner integrally continuously, with a rear face part 22 formed in the same width as the breadth of the back plate 11, with a bottom face part 23, and with a surface part 24; and a pair of gusset plates 31 attachable to both lateral ends for which the surface base plate 21 is bent in U shape. The main storage chamber is installed with a front pocket part 41, a lid plate, and a shoulder strap respectively.SELECTED DRAWING: Figure 4

Description

The present invention relates to improvement of a school bag.

2. Description of the Related Art Conventionally, schoolbags for schoolchildren are composed of a schoolbag body made of natural leather or artificial leather, a cover plate (cover) covering the entire top surface of the schoolbag body, and a shoulder belt carrying the schoolbag body. The school bag body includes a main storage room for storing textbooks and notebooks, a sub storage room for storing various teaching materials, and a front pocket for storing various accessories.

Therefore, the school bag 1 is formed by sewing a large number of assembled parts through a large number of manufacturing steps. Also, since the school bag is carried for six years from the first grade to the sixth grade in elementary school, it is made to be strong and durable so as not to be deformed or damaged by aging or impact. Furthermore, it is preferable that the body is light and small in order to make it easy to carry even a small body of lower grades without physical strength and to make it easy to handle.

On the other hand, in recent school bags, the size of textbooks and notebooks to be accommodated has shifted from B5 size to A4 size, and the A4 size is now standard. For this reason, the size of the school bag naturally becomes large. Therefore, in order to be able to store A4 size textbooks without changing the width of the school bag, a sewing portion (so-called edge portion) protruding in the width direction of the school bag to sew the backboard and the main storage room. There is known a school bag in which the inside accommodation width is increased without changing the spread in the width direction and the size is prevented.

JP 2003-310324 A JP 2003-310326 A

However, it is difficult to reduce the weight of the school bag because the main housing room, the auxiliary housing room, the front pocket, the cover plate, and the carrying belt remain unchanged. Furthermore, even if the connection between the back plate and the school bag body is sewn and fixed inside the main storage chamber, a sewn portion is exposed on the lower side of the back plate to maintain the strength of the school bag, and has a rigid structure. It has become. Therefore, when carrying a school bag, the lower end portion of the back plate hits the back and waist of the schoolchild, causing low back pain. Further, when the sewn portion is hard, the sewn portion and the clothes rub against each other, so that the clothes tend to be deteriorated.

Therefore, the problem to be solved by the present invention is to reduce the number of components of the school bag and to reduce the weight and cost of the school bag by reducing the number of manufacturing steps, and to eliminate the hard sewn portion from the lower end of the back plate. This makes it easier to carry a school bag and reduces the burden on schoolchildren's shoulders and hips.

In order to achieve the above object, the present invention provides a back plate 11 integrally provided with a bendable bottom plate portion 13 below a flat back plate portion 12 having a cushion portion 15 of an arbitrary shape disposed on the surface. A back substrate 22 formed to have the same width as the width of the back plate 11, a bottom substrate 23, and a front substrate 24. The main storage room 10 is formed by a pair of gusset plates 31 attached to both ends in the width direction of the bent portion, and the front pocket portion 41, the cover plate 5, and the backing belt 7 are respectively mounted in the main storage room. Features. Also, the back plate 11 has a back ring 27 attached to the upper center of the back plate portion 12, and the cushion portion 15 provided on the surface of the back plate portion 12 has a waist abutment portion 16 provided in the lower side width direction, and a width direction. A backrest 17 is provided inside each of the connection portions 19 provided at both ends. Further, the front surface substrate 21 is provided with respective margin portions 25 at both ends in the width direction of the back surface portion 22, the bottom surface portion 23, and the front surface portion 24, and the margin portion and the margin portion 33 provided on the gusset plate 31 are provided. The back plate portion 12 and the bottom plate portion 13 of the back plate 11 are connected to each other by superimposing them on the front surface side of the back surface portion 22 and the bottom surface portion 23. Further, the gusset plate 31 is formed by integrally bending the both ends and the bottom end of the width direction inward to form a margin portion 33, and the margin portion and the margin portion 25 of the front substrate 21 are overlapped. It is characterized in that arbitrary portions of the mutual margins 25 and 33 are fixed with connecting studs 48. Further, the back plate 11 has one side 37a in the width direction from the center line of the connecting strip 37 sewn and fixed to the connecting portions 19 provided at the right and left ends of the back plate portion 12 and the bottom portion 13, respectively. 11 is bonded to the back surface 22 and the bottom surface 23 of the front substrate 21 and the opposite side 37b of the connecting strip 37 is sewn to the gusset surface 32 of the gusset plate 31, respectively. It is characterized by being fixed. Furthermore, the main storage room 10 is equipped with a decoration core plate 45 formed in a substantially rectangular shape on the entire inner wall surface, and the bent plate portions 46 provided at the lower ends of the decoration core plate are located on the inner bottom surface, and An inner bottom substrate 50 is attached to the entire inner bottom surface including the bent plate portion 46.

Therefore, in the school bag, the main storage room 10 is constituted by three points of the front board 21, the back board 11, and the gusset board 31, so that the number of parts is reduced to improve the efficiency of the assembling process, and to reduce the weight and cost of the school bag 1. Reduction can be achieved. Further, by eliminating the hard sewn portion from the lower side of the back plate 11 and forming the cushioning waist abutment portion 16 to the lower end of the back plate 11, it is possible to prevent the back and lower back pain of the schoolchild carrying the school bag 1. In addition, since the clothes do not hit the hard sewn portions, the clothes can be prevented from being rubbed and deteriorated.

FIG. 1 is a front view of a school bag in which a part of a backpack belt is omitted. FIG. 2 is a bottom view of the school cell. FIG. 3 is a side view of the school bag. FIG. 4 is an exploded perspective view of the main storage chamber. FIG. 5 is an enlarged sectional view of a main part of the front substrate. FIG. 6 is a central cross-sectional view in a state where gusset plates are attached to both ends of the front substrate. FIG. 7 is a central cross-sectional view of the school bag main body in which a back plate is attached to the back surface of the front substrate and a front pocket is attached to the front surface. FIG. 8 is a central cross-sectional view of the school bag body. FIG. 9 is an enlarged sectional view taken along line AA of FIG. FIG. 10 is an enlarged sectional view of a main part of a dotted line portion in FIG. FIG. 11 is a bottom view of a partly broken school bag showing a state in which a part of a backpack belt is connected to a lock attached to a bottom surface portion.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a school bag with a part of a backpack belt omitted, FIG. 2 is a bottom view of the school bag, FIG. 3 is a side view of the school bag, and FIG. FIG. 4 is an exploded perspective view of the main body of the bag, FIG. 5 is an enlarged cross-sectional view of a main portion of the front substrate, FIG. 6 is a central cross-sectional view of the front substrate with gusset plates attached to both ends, FIG. Is a central cross-sectional view of the main storage chamber in which a back plate is mounted on the back surface of the front substrate and a front pocket is mounted on the front surface, FIG. 8 is a central cross-sectional view of the main storage chamber, and FIG. FIG. 10 is an enlarged sectional view taken along the line AA of FIG. A school bag 1 made of natural leather or artificial leather or the like has a school bag main body 2 including a main storage room 10 for storing textbooks and notebooks and a front pocket 41 for storing small articles, and an opening 10a of the main storage room 10. A cover plate 5 (cover) that can be opened and closed, and a shoulder belt 7 that carries the school bag 1.

The main storage chamber 10 constituting the school bag main body 2 is formed in a box shape having an opening 10a upward by a back plate 11, a surface substrate 21, and a pair of gusset plates 31, and a decorative core plate 45 is provided on an inner peripheral wall surface. It is attached to reinforce the strength of the entire inner peripheral wall surface, and is formed by attaching an inner bottom substrate 50 to the inner bottom surface.

As shown in FIG. 4, the back plate 11 is formed by bending a lower end of a back plate portion 12 formed of a flexible hard synthetic resin plate (polypropylene resin plate) material in a flat bottom direction of the main storage chamber 10. The bottom plate portion 13 is formed integrally. The length of the bottom plate 13 in the front-rear direction is formed to be about one third of the gusset width of the gusset plate 31.

The back plate includes a plurality of cushion portions 15 having elasticity on the surface of the back plate portion 12 and connection portions that are overlapped and sewn at both ends in the width direction with the surface substrate 21 and the margin portions 25 and 33 of the gusset plate 31. 19 and a back ring 27 is attached to the upper center of the back plate 11.

The cushion portion 15 provided on the surface of the back plate portion 12 is composed of a flexible waist portion 16 bulging from the lower side width direction of the back plate portion 12 toward the bottom plate portion 13 and connecting portions 19 provided at both ends in the width direction. A flexible backrest 17 which is formed vertically inside is provided. The arrangement of the cushion portion 15 of the present application described above is an example, and is not limited to the above arrangement.

The cushion portion 15 is made of a well-known synthetic resin foam, for example, a flexible cushion material having elasticity made of foamed urethane, foamed polyethylene, foamed polystyrene, or the like, and has artificial leather (for example, Clarino registered trademark) on its surface. It is formed by bonding.

The waist abutment portion 16 located below the bottom plate portion 12 composed of the cushion portion 15 is partially bent in a round shape toward the bottom surface portion 13 so that a hard corner portion cannot be formed at the lower end. The lower end of the back plate 11 of the school bag 1 can be easily carried without hitting the waist, and the clothes can be contacted without rubbing with the clothes, so that the deterioration of the clothes can be prevented.

As shown in FIG. 5, the front substrate 21 is made of a well-known artificial leather material, and is formed on a back surface of a surface sheet material 21a formed by impregnating a base cloth made of a nonwoven fabric with a synthetic resin material in order to achieve strength and weight reduction. An elastic sheet material 21b made of a foamable resin material having a cushioning function, and a back sheet 21c formed by laminating an elastic knitted fabric and a synthetic resin sheet are each laminated and then heat-pressed. Good, but not limited to this.

The surface sheet material 21a is a known artificial leather material formed by impregnating a polyurethane resin material on the surface of a base fabric made of a lightweight and strong nonwoven fabric, and is, for example, a product name manufactured and sold by Kuraray Co., Ltd. It is desirable to use "Clarino" (registered trademark).

The elastic sheet material 21b is a thin and lightweight elastic resin material having elasticity, cushioning and flexibility, and is an elastic sheet material made of urethane foam, foamed polyethylene, foamed polystyrene, or the like, preferably foamed polyethylene, for example, It is desirable to use the product name “Tolepef” (registered trademark) manufactured and sold by Toray Industries, Inc.

The back sheet 21c is formed by heat-pressing a stretchable knitted fabric (knitted fabric), preferably a tricot knitted fabric, and a synthetic resin sheet having an arbitrary pattern on the surface with a roller.

As shown in FIG. 4, the front substrate 21 is formed integrally with a back surface portion 22, a bottom surface portion 23, and a front surface portion 24 having the same width as the width of the back plate 11, and a bottom surface portion located at the center in the horizontal direction. The rear surface portion 22 and the front surface portion 24 located on both sides of 23 are respectively raised and formed so as to be bent into a substantially U-shape.

As shown in FIG. 4, the gusset plate 31 has the width direction both ends and the lower end of the gusset surface portion 32 made of a hard synthetic resin plate material formed in the front-rear width (about 14 to 16 cm) of the main storage chamber 10 inside. A bent portion 33 is integrally formed by bending, and a cutout portion 35 is provided at the intersection of the lower ends of the three-sided bent portions 33 to facilitate bending of the bent portion 33.

As shown in FIG. 3, the gusset plate 31 is provided with a reinforcing portion 32a having an uneven pattern on the surface of the gusset surface portion 32 to increase the strength of the main storage chamber 10. At the upper center of the gusset surface portion 32, a suspending tool 49 such as a ring or a suspending ring is attached, and at the lower portion, an engaging ring 28 for pivotally engaging one end of the shoulder belt 7 is attached. . By attaching the lower end of the backpack belt 7 to the gusset surface portion 32 of the gusset plate 31 so as to be pivotable, the underside of the backpack belt 7 is widened, so that the schoolchild can easily carry the school bag even when the school age is higher.

As shown in FIGS. 3 and 4, the front pocket 41 is formed of the same material as the front substrate 21, and is integrally formed with a lower surface 42 having a lower end overlapping the bottom 23 of the front substrate 21. The small gusset 43 is adhered to the seam allowance 25 of the surface portion 21 and the seam allowance 33 of the gusset plate 31, and a slide fastener 44a is attached to the upper surface opening 44 so as to be openable and closable.

As shown in FIG. 4, the decorative core plate 45 is formed in a rectangular shape in which a hard resin plate material is superimposed on an inner wall surface of the main storage room 10, and a lower portion of each wall surface is bent inward to form an inner bottom surface of the main storage room 10. The located bent plate portion 46 is provided integrally. By superimposing the decorative core plate 45 on the inner wall of the main storage room 10, the strength of the main storage room 10 is reinforced, and by printing the inner wall surface of the decorative core plate 45 in an arbitrary pattern, the main storage room 10 is printed. Can function as a decorative wall.

In the sewing process of the land cell 1, the bottom portion 23 of the front substrate 21 is positioned in the horizontal direction, the rear portions 22 and the front portion 24 on both sides of the bottom portion are raised in parallel and bent into a substantially U-shape. The glue margins 33 of the gusset plate 31 are superimposed on the glue margins 25 provided at both ends of the gusset plate 31 from the outside, and the connecting studs 48 are attached and fixed to the holes 26, 34 provided in the respective glue margins 25, 33. Thereby, the main storage room 10 having a size capable of accommodating an A4 size textbook is formed (FIG. 6).

Next, one side 37a in the width direction from the center line of the connection strip 37 is sewn and fixed to the connecting portions 19 provided at both ends of the back plate 11, respectively, and the back plate portion 12 and the bottom plate portion 13 of the back plate 11 are fixed to the front substrate 21. And the other side 37b of the connecting strip 37 is sewn and fixed to both sides 32a and the bottom side 32b of the gore surface 32 of the gore plate 31, respectively (FIG. 7).

Further, the bent plate portions 46 provided at the lower end of the decorative core plate 45 are respectively bent inward to be mounted inside the main storage chamber 10, and the bent plate portions 46 located on the inner bottom surface are shifted from the upper surface to the inner bottom surface. The inner bottom substrate 50 is entirely covered, and is fixed to the bottom portion 23 with a fixture 56 (FIG. 7).

Further, an edge band 52 is sewn to the opening 10a of the main storage chamber 10, and one end of the cover plate 5 is sewn to the upper end of the back plate 11 so as to open and close the opening 10a of the main storage chamber 10. The lower end center of the lid plate 5 and the lower end center of the front pocket 41 are attached to be openable and closable by attaching a male and female lid opening / closing lock 55 (FIG. 3).

As described above, the backpack belt 7 attached to the school bag 1 has one end attached to the back ring 27 attached to the center of the upper end of the backboard 11, and the other end attached below the gusset surface 32 of the gusset plate 31. It is connected to and attached to a retaining ring 28. As shown in FIG. 11, the lower end of the backpack belt 7 may be connected to a dharma ring 58 attached to a conventional lock 57 attached in the width direction of the bottom portion 23.

Further, when the back plate 11 is bonded to the front substrate 21, the opposite side 36 b of the connecting strip 37 sewn and fixed to the connection portions 19 provided at both ends of the back plate 11 is attached to both sides of the gusset surface portion 32 of the gusset plate 31. 32a and 32b, respectively. When sewing the connection belt 37 on the bottom surface 23 side of the school bag 1, the reinforcing pieces 53 are located at the four corners of the bottom surface 23, and the reinforcement pieces, the connection belt 37 and the gusset plate 31 are sewn and fixed with sewing threads 54. Thus, the bottom surface of the school bag 1 can be protected, and damage and damage due to impact can be prevented.

Hereinafter, the operation of the embodiment of the present invention will be described. The school bag 1 covers the school bag main body 2 including the main storage room 10 and the front pocket 41 and the opening 10a of the main storage room 10 of the school bag main body so as to be opened and closed. It is composed of the cover plate 5 and the backing belt 7 carrying the school bag 1, and the number of components of the school bag is reduced by eliminating the sub-storage room from the school bag 1, the weight of the school bag 1 is reduced, and the sewing process is omitted to improve the working efficiency. It is possible to improve the cost and reduce the cost, which is very economical.

The main storage room 10 has a small number of components including a back plate 11, a front substrate 21, a pair of gusset plates 31, a decorative core plate 45 attached to the inner peripheral wall surface of the main storage room 10, and an inner bottom plate 50 laid on the inner bottom surface. Therefore, the sewing process can be omitted, the work efficiency can be improved, and the cost can be reduced.

The back plate 11 of the main storage room 10 constituting the school bag main body 2 is integrally formed with a bottom plate portion 13 in which the lower end side of the back plate portion 12 is bent toward the bottom surface of the main storage room 10. By providing the provided waist abutment part 16 by bulging a part from the width direction to the bottom plate part side, the lower end can be bent in a round shape without being square, and the cushion part bulges. Therefore, a hard corner is not formed at the lower end of the back plate portion 12. Therefore, since the lower end of the back plate 11 of the school bag 1 can be easily carried without hitting the back and waist of the school child, the back pain of the school child can be prevented, and the deterioration of the clothes can be prevented because the school children do not rub against the clothes. it can.

In the sewing process of the main storage chamber 10, the rear surface portion 22 and the front surface portion 24 located on both sides of the bottom surface portion 23 of the front substrate 21 are raised in parallel and bent in a substantially U-shape, and provided at both ends of the front substrate. The seam allowance 33 of the gusset plate 31 is superposed on the seam allowance 25 from the outside, and is fixed to the holes 26, 34 provided in the seam allowances 25, 33 respectively by connecting studs 48 (FIG. 6).

Next, one side of the connecting strip 37 is sewn to both ends connecting portions 19 of the back plate 11, and then the back plate portion 12 and the bottom plate portion 13 of the back plate 11 are connected to the back portion 22 and the bottom portion 23 of the front substrate 21. While being bonded to the outside, the opposite side of the connecting strip 37 sewn to the connection portion 19 of the back plate 11 is sewn and fixed to both sides 32a and the bottom side 32b of the gusset surface portion 32 of the gusset plate 31 (FIG. 7).

Further, a decorative core plate 45 formed in a substantially square shape by a hard synthetic resin plate is attached in close contact with the inner wall surface of the main storage room 10, and a bent plate portion 46 provided at the lower end is located on the inner bottom surface. An inner bottom substrate 50 is fixed from the upper surface of the curved plate portion to the entire inner bottom surface with a fixture 56 (FIG. 8).

The inner peripheral wall surface of the main storage room 10 is doubled by closely attaching the surface substrate 21, the gusset plate 31 and the decorative core plate 45, thereby maintaining the strength of the peripheral wall surface and bending the decorative core plate 45 on the inner bottom surface. By arranging the plate portion 46, the main storage chamber 10 can be firmly fixed to the stored items so as not to be deformed or damaged by the weight or external impact.

Further, an edge strip 53 is sewn to the opening 10a of the main storage chamber 10, and one end is sewn to the upper end of the back plate 11 to the cover plate 5 which covers the opening 10a so as to be openable and closable. 5 and a lid opening / closing lock 55 provided at the center of the lower end of the front pocket 41 are attached so that the lid plate 5 can be opened / closed.

As described above, the backpack belt 7 of the school bag 1 is attached at the upper end of the backpack belt 7 to the back ring 27 attached to the back plate 11, and the lower end is connected to the locking ring 28 attached below the gusset surface 32 of the gusset plate 31. It is installed.

Further, when the back plate 11 is bonded to the front substrate 21, the opposite side 37 b of the connecting strip 37 sewn and fixed to the connecting portions 19 provided at both ends of the back plate 11 is attached to both sides 32 a of the gusset plate 31. When sewn and fixed to the bottom 32b, reinforcing pieces 53 for protecting the lower surface of the school bag 1 are attached to the four corners and sewn and fixed together with the gusset plate 31, thereby preventing the school bag 1 from being damaged or damaged by impact. Can be.

REFERENCE SIGNS LIST 1 school bag 2 school bag body 5 cover plate 7 backpack belt 10 main storage room 11 back plate 12 back plate portion 13 bottom plate portion 15 cushion portion 16 waist contact portion 17 back contact portion 19 connection portion 21 surface substrate 22 back surface portion 23 bottom surface 24 surface Part 25 Gap part 26 Hole 27 Back ring 28 Lock ring 31 Depth plate 32 Depth surface part 33 Gap part 34 Hole 35 Notch 37 Connecting strip 37a One side 37b Opposite side 41 Front pocket 42 Bottom part 43 Small gusset 44 Opening 44a slide fastener 45 decorative core plate 46 bent plate portion 48 connecting stud 49 hanging tool 50 inner bottom substrate 52 edging band 53 reinforcing strip 55 lid opening / closing lock 57 lock 58 daruma ring

Claims (6)

A back plate (11) integrally provided with a bendable bottom plate portion (13) below a flat back plate portion (12) having a cushion portion (15) of an arbitrary shape disposed on a surface thereof; A front substrate (21) formed so that a back surface portion (22), a bottom surface portion (23), and a front surface portion (24) formed to have the same width as the lateral width of (11) can be bent integrally and continuously; A main storage room (10) is formed by a pair of gusset plates (31) attached to both ends in the width direction of the substrate (21) bent in a U-shape, and a front pocket portion (41) and a lid are formed in the main storage room. A school bag comprising a plate (5) and a backing belt (7). The back plate (11) has a back ring (27) attached to the upper center of the back plate portion (12), and the cushion portion (15) provided on the surface of the back plate portion (12) is provided in the lower side width direction. The school bag according to claim 1, characterized in that a backrest (17) is provided inside each of the waistrests (16) and the connection parts (19) provided at both ends in the width direction. The front substrate (21) is provided with respective margin portions (25) at both ends in the width direction of the back surface portion (22), the bottom surface portion (23), and the front surface portion (24), and the margin portion and the gusset plate (31) are provided. ) And the glue allowances (33) provided on the back plate (11) are connected to each other to form a box, and the back support (12) of the back plate (11) is provided on the front side of the back surface (22) and the bottom surface (23). ) And the bottom plate portion (13) are superposed and connected to each other. The gusset plate (31) is integrally formed with a margin portion (33) by bending both ends and a bottom end in the width direction inward, and the margin portion and a margin portion (25) of the front substrate (21) are formed. The school bag according to claim 1 or 3, wherein any one of the overlap portions (25, 33) is fixed by a connecting stud (48). The back plate (11) is connected to one side (37a) in the width direction from the center line of the connecting strip (37) by connecting portions (19) provided on both right and left ends of the back plate portion (12) and the bottom portion (13). Each is fixed by sewing, and then the back plate (12) and the bottom surface (13) of the back plate (11) are bonded to the back surface (22) and the bottom surface (23) of the front substrate (21). 5. The school bag according to claim 2, wherein the opposite side (37 b) of the connecting strip (37) is sewn and fixed to the gusset surface portion (32) of the gusset plate (31). The main storage chamber (10) has a decoration core plate (45) formed in a substantially rectangular shape on the entire inner wall surface, and bent plate portions (46) provided at the lower ends of the decoration core plate are located on the inner bottom surface. The school bag according to claim 1, wherein an inner bottom substrate (50) is attached to the entire inner bottom surface including the bent plate portion (46).

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