JP3186507U - school bag - Google Patents

Abstract

Provided is a school bag that reduces the number of components and saves labor and weight in a sewing process.
A back plate 7 is attached to the back side of a large gusset frame 4 formed by integrally forming a bottom surface portion 5 and large gusset portions 6 and 6 on both sides of the bottom surface portion, and a front plate on the opposite side of the back plate. 8 is attached to the front side of the front plate 8 of the main housing chamber formed by attaching the base frame body 11 integrally formed with the outer frame of the sub-accommodating portion 12 and the front pocket portion 17, and a partition plate is provided inside the base frame body. 23, the sub-accommodating portion 12 and the front pocket portion 17 are formed, and a slide fastener 25 is attached to the opening 21 provided at the upper portion of the front pocket portion so as to be openable and closable.
[Selection] Figure 2

Description

  The present invention relates to improvement of school bags for school children.

Traditionally, school bags carried by schoolchildren include a main containment room that accommodates large items such as textbooks and notebooks, a sub-accommodation unit that accommodates various educational materials such as calculators, and money such as school expenses and educational materials accommodated inside. In order to prevent important things from dropping and losing, the backpack body that consists of a front pocket that can be opened and closed with a zipper attached to the opening, a lid plate that covers the backpack body, and the backpack that carries the backpack body What is comprised with the belt is widely known.

Utility Model Registration No. 3156078 Japanese Utility Model Publication No. 7-27324

On the other hand, the school bag is composed of a number of members, and in particular, the school bag main body has a large gusset frame in which large gusset parts are integrally formed on both sides of the bottom surface part constituting the main storage chamber, and a back plate located on the back side of the schoolchild. And a front plate located on the opposite side of the back plate, the sub-accommodating portion is a gusseted frame integrally formed with gusset portions on both sides of the bottom surface portion, and a partition plate that partitions the sub-accommodating portion and the front pocket portion The front pocket is provided above the front pocket, with a front plate portion and both side gusset portions formed integrally with the bottom surface and the front surface, a horizontal gusset portion forming an opening located in the horizontal direction above. A slide fastener is attached to the opening so that it can be opened and closed. Furthermore, the front plate of the front pocket has a pocket portion for storing a name tag indicating the name, address, school name, etc. of the schoolchild, and the name tag is displayed. I know what provided a window to To have.

Therefore, the school bag is sewn by many skilled craftsmen due to the complexity of the many steps to sew many parts and the assembly process of each member. It is time consuming and inefficient, and the number of parts is large and the school bag becomes heavy.

Therefore, the present invention reduces the number of sewing parts of the school bag and reduces the weight of the school bag by reducing the number of parts of the school bag, especially the school bag made of artificial leather or wave synthetic leather. The task is to reduce the burden on schoolchildren carrying school bags.

In the present invention, a back plate 7 is attached to the back side of a large gusset frame 4 formed integrally with a bottom surface portion 5 and large gusset portions 6, 6 on both sides of the bottom surface portion, and a front plate on the opposite side of the back plate. 8 is attached to the front side of the front plate 8 where the main storage chamber 3 is formed, and a base frame body 11 integrally formed with the outer frame of the sub-accommodating portion 12 and the front pocket portion 17 is attached to the inside of the base frame body. The partition plate 23 is attached to form the sub-accommodating portion 12 and the front pocket portion 17, and the slide fastener 25 is attached to the opening 21 provided on the upper portion of the front pocket portion so as to be opened and closed. Further, the base frame 11 is formed by bending an artificial leather sheet 31 by hot pressing to bend a bottom surface portion 19 and both side surface portions 20 and 20 that are continuous with three sides of the front plate portion 18 constituting the front pocket portion 17, The sub-accommodating portion 12 is formed by bending the bottom portion 13 and the both side gusset portions 14 and 14 integrally formed through a flat step portion 15 which is continuously bent on the bottom side and the back side of the side portion. It is characterized by comprising. Further, the artificial leather sheet 31 includes a surface sheet fabric 32 obtained by impregnating a polyurethane resin material into a lightweight, non-woven fabric having strength and flexibility, and a thin, lightweight foamed polyethylene having elasticity, buffering properties and flexibility. (PE) Resin material, expanded polypropylene (PP) resin material, elastic core (33) made of ethylene vinyl acetate (EVA), etc., and back surface formed by thermocompression bonding a synthetic resin sheet to a stretchable knitted fabric The top surface 32, the elastic core 33, and the back surface 35 are laminated and formed integrally with an adhesive. Furthermore, the back surface sheet material 35 is characterized in that a polyurethane resin sheet material 37 having an arbitrary pattern on the surface and a tricot knitted fabric 36 having elasticity are integrally formed by laminating.

Therefore, the school bag body 2 of the present invention is formed by using the base frame body 11 in which the sub-accommodating portion 12 and the front pocket portion 17 are integrally formed, thereby reducing the number of parts constituting the school bag 1 and performing the sewing process. Labor saving can be achieved, and the weight of the school bag can be reduced by reducing the number of parts. Furthermore, since the sub-accommodating portion 12 and the front pocket portion 17 are integrally formed, it is possible to prevent the sewn portion from being damaged due to the deformation of the school bag or the secular change.

It is a perspective view of the state which opened the cover plate of the school bag concerning this invention. It is a disassembled perspective view of a school bag main body. It is a principal part expanded sectional view of an artificial leather sheet. It is a disassembled perspective view of a base frame. It is a side view of a base frame. FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5. It is an expanded sectional view of the dashed-dotted line part shown in FIG. It is a perspective view of the 2nd base frame which provided the window part in the front stage pocket part.

The embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the school bag cover according to the present invention in an opened state, FIG. 2 is an exploded perspective view of the school bag body, and FIG. 4 is an exploded perspective view of the base frame body, FIG. 5 is a side view of the base frame body, FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5, and FIG. It is an expanded sectional view. The school bag 1 is composed of a school bag body 2 made of synthetic leather or artificial leather, a cover plate 26, and a back belt (not shown).

As shown in FIGS. 1 and 2, the school bag main body 2 includes a large main housing portion 3 for storing textbooks, notebooks, pencil cases, and the like, and a base frame 11 (a small sub-portion for storing learning tools and the like) attached to the front side of the main housing portion 3. And a front pocket 27 for preventing the storage chamber 3 from spreading on the side surface of the school bag body 2. Is installed. The front fastening belt 27 has one end fixed to the large gusset portion 6 and the other end attached to the front plate portion 18 on the front side of the front pocket portion 17.

The components of the main housing part 3 include a large gusset frame 4 integrally formed with large gusset parts 6 and 6 on both sides of a bottom surface part 5 formed of a wide flat plate, and a back located facing the back of a schoolchild. A plate 7 and a front plate 8 positioned on the opposite side of the back plate are formed by sewing, and an opening 9 for inserting and removing textbooks is provided above.

As shown in FIGS. 2, 4, and 5, the base frame body 11 is formed by continuously swelling the artificial leather sheet 31 by thermoforming to continuously form the sub-accommodating portion 12 and the front pocket portion 17. Further, by attaching and partitioning a partition plate 23 inside the planar step portion 15 of the base frame body 11, the sub-accommodating portion 12 and the front pocket portion 17 are formed, and an opening portion 21 having substantially the same height is formed above. be able to. A slide fastener 25 is attached to the opening portion 21 of the front pocket portion 17 so as to be able to be opened and closed by attaching a slide fastener 25 that prevents the stored item from being lost or dropped.

Therefore, the process of assembling and sewing the sub-accommodating portion 12 and the front pocket portion 17 is only required once and the sewing process is easy, so that the assembling process of the school bag can be performed efficiently.

The heat forming process for forming the base frame 11 is performed by a known vacuum forming process or a hot press process. In any of the processing methods, the bottom surface portion 19 is formed by folding the three directions continuous to the peripheral edge of the front plate portion 18 constituting the front pocket 17 positioned substantially at the center of one flat artificial leather sheet 31 in a perpendicular direction. Both side surface portions 20 and 20 are formed, the bottom surface portion and the back side of the both side surface portions are valley-folded to form a continuous wide flat step portion 15, which is formed to be slightly larger at the peripheral edge of the flat step portion By bending the bottom surface portion 13 and the side surface portions 14 and 14 integrally to form the sub-accommodating portion 12, the sub-accommodating portion 12 and the front pocket portion 17 can be easily formed by a single heat forming process.

As shown in FIG. 8, the second base frame 40 is provided with a window portion 45 for displaying a name tag (not shown) on the front plate portion 43 of the front pocket 42, and a name tag is put in and out of the back side of the window portion. It is needless to say that the second base frame body 40 can be used instead of the base frame body 11 by providing the pocket portion (not shown). Since the configuration of the second base frame body 40 is the same as that of the base frame body 11, the description thereof is omitted.

As shown in FIG. 3, the artificial leather sheet 31 constituting the base frame bodies 11 and 40 has a surface sheet base 32 having a surface portion resembling natural leather, and is thin and lightweight, elastic, buffering, and flexible. A back sheet fabric 37 formed by press-bonding a synthetic resin sheet 37 to an elastic core 33 made of a foamed resin material having thermoplasticity and a stretchable knitted fabric 36 is laminated and heat-pressed with an adhesive.

The surface sheet fabric 32 is a known artificial leather formed by coating a polyurethane resin material on the surface of a lightweight and strong nonwoven fabric. For example, the product name “Clarino” (registered trademark) manufactured and sold by Kuraray Co., Ltd. is used. It is desirable to use it.

The elastic interlining 33 is made of a thermoplastic foam resin material having a thin and light elasticity, shock-absorbing property and flexibility, such as a foamed polyethylene (PE) resin material, a foamed polypropylene (PP) resin material, ethylene vinyl acetate (EVA). It is desirable to use foamed polyethylene, for example, the trade name “Tolepef” (registered trademark) sold by Toray Industries, Inc.

The back sheet fabric 35 is formed by heat-pressing a tricot knitted fabric 36 having elasticity and a synthetic resin sheet 37 having an arbitrary pattern on the surface with a roller. The tricot knitted fabric 36 is formed, for example, by being knitted with a polyester synthetic fiber yarn so that it can be stretched evenly in the meridian direction, the weft direction, and the bias direction.

On the other hand, the synthetic resin sheet 37 having an arbitrary pattern on the surface is preferably made of a polyurethane resin sheet, and the tricot knitted fabric 36 and the polyurethane resin sheet 37 are integrally formed by laminating.

The laminating process can be performed without distortion in the pattern crimped to the knitted fabric 36 by adjusting the pressure and the tensile force with an appropriate heating temperature and an appropriate roller. The artificial leather sheet 31 described above is not limited to the artificial leather sheet, but may be a sheet material formed in two layers in which a surface sheet material 32 is attached to the surface side of the elastic core material 33.

Hereinafter, the operation of the embodiment of the present invention will be described. The artificial leather sheet 31 is formed by thermoforming the base frame body 11, and the partition plate 23 is interposed inside the planar step portion 15 of the base frame body. By forming the sub-accommodating portion 12 and the front pocket portion 17 and attaching the slide fastener to the upper end opening of the front-stage pocket portion so as to be opened and closed, the sub-accommodating portion 12 and the front pocket portion 17 can be formed integrally. it can.

As shown in FIG. 2, the assembling process of the school bag body 2 is performed by overlapping the seam allowance part 11a of the base frame body 11, the seam allowance part 4a of the large gusset frame 4, and the seam allowance part 8a of the front plate 8 respectively. To wear. Accordingly, the conventional sub-accommodating portion and the front pocket portion are sewn, and the fine members constituting the front pocket portion are unnecessary, so that the sewing step can be omitted, the school bag can be lightened, and the cost can be reduced. Can be economical.

Next, the seam allowance portion 4b located on the back side of the large gusset frame 4 and the seam allowance portion 7a of the back plate 7 are sewn, and the lower end of the cover plate 26 is sewn to the upper end of the back plate 7 and the school bag main body. 2 forms. An edge band 39 formed in a reinforcing band shape is sewn to the upper edge of the main storage chamber 3 and the upper edge of the sub-accommodation portion 12.

As shown in FIG. 8, in addition to the base frame 11, the base frame constituting the school bag main body 2 is a second base frame provided with a window portion 45 for displaying a name tag on the front plate portion 43 of the front pocket portion 42. Of course, 40 can be attached and formed. A pocket portion is provided inside the window portion 45 of the second base frame body 40 so that the name tag can be displayed.

DESCRIPTION OF SYMBOLS 1 School bag 2 School bag main body 3 Main accommodation chamber 4 Large gusset frame 5 Bottom part 6 Large gusset part 7 Back plate 8 Front plate 11 Base frame body 12 Sub-accommodation part 13 Bottom part 14 Machi part 15 Planar step part 17 Front stage pocket part 18 Front Plate part 19 Bottom face part 20 Side face part 21 Opening part 23 Partition plate 25 Fastener 26 Cover plate 31 Artificial leather sheet 32 Top sheet material 33 Foamed resin core 35 Back sheet material 36 Knitted fabric 37 Synthetic resin sheet material

Claims (4)

A back plate (7) is attached to the back side of a large gusset frame (4) formed integrally with a bottom surface portion (5) and large gusset portions (6), (6) on both sides of the bottom surface portion, and the back plate On the front side of the front plate (8) of the main storage chamber (3) formed by attaching the front plate (8) to the opposite side, the outer frame of the sub-accommodating portion (12) and the front pocket portion (17) is integrally formed The base frame body (11) is attached, and the partition plate (23) is attached to the inside of the base frame body to form the sub-accommodating portion (12) and the front pocket portion (17), and provided on the upper portion of the front pocket portion. A school bag characterized in that a slide fastener (25) is attached to the opening (21) so as to be openable and closable. The base frame body (11) includes a bottom surface portion (19) and both side surface portions (19) continuous to three sides of the front plate portion (18) constituting the front pocket portion (17) by hot pressing an artificial leather sheet (31). 20) and (20) are formed by bending, and a bottom part (13) and both sides formed to be slightly larger through a planar step part (15) provided by continuously folding the bottom part and the back side of the side part. 2. The school bag according to claim 1, wherein the gusset portions (14) and (14) are integrally bent to constitute the sub-accommodating portion (12). The artificial leather sheet (31) has a surface sheet fabric (32) obtained by impregnating a polyurethane resin material into a lightweight, non-woven fabric having strength and flexibility, and has a thin, lightweight elasticity, cushioning property and flexibility. Formed by thermocompression bonding a synthetic resin sheet to an elastic core (33) made of expanded polyethylene (PE) resin material, expanded polypropylene (PP) resin material, ethylene vinyl acetate (EVA), and stretchable knitted fabric The back sheet base (35) is formed, and the top sheet base (32), the elastic core (33), and the back sheet base (35) are laminated and integrally formed through an adhesive. The school bag according to claim 2. The back sheet fabric (35) is formed by integrally forming a polyurethane resin sheet fabric (37) having an arbitrary pattern on the surface and a tricot knitted fabric (36) having stretchability by lamination. The school bag according to claim 2 or 3.

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