JP3236452U - School bag reinforcement structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing structure of a school bag capable of widening a reinforcing portion of a side plate as compared with a conventional product and reducing a manufacturing cost. SOLUTION: Each side plate reinforcing portion 7 is formed with a drum-shaped portion 8 which is wider than an intermediate reinforcing portion 6 and whose planes bulge on both sides in the width direction. Further, a flat drum-shaped recessed portion 9 is formed, leaving the peripheral portion of the drum-shaped portion 8. A reinforcing plate 10 matching the recessed portion 9 is detachably fitted therein. [Selection diagram] FIG. 5

Description

The present invention relates to a reinforcing structure for reinforcing the outer periphery of the opening at the upper end of the school bag.

The following Patent Document 1 has been proposed as a reinforcing structure for reinforcing the opening at the upper end of a conventional school bag.
This structure has a pair of facing side plates and a bottomed box-shaped school bag body in which a front plate and a backing plate are arranged at positions orthogonal to those side plates. A square opening is formed at the upper end of the school bag main body, and a reinforcing plate is sewn on the outer periphery of the end portion of the opening.
The reinforcing plate includes a band-shaped intermediate reinforcing portion that reinforces the outer periphery of the opening of the front plate, and a pair of strip-shaped side plate reinforcing portions that reinforce the outer periphery of the opening of the pair of side plates and extend on both sides of the intermediate reinforcing portion. Have.

Japanese Patent No. 6860545

However, in the above-mentioned conventional reinforcing plate, since the pair of side plates and the end portions of the front plate are sewn together, the total length of the reinforcing plate must be long, and the mold for forming the reinforcing plate becomes large.
Further, since the side plate reinforcing portion constituting the reinforcing plate has a structure of being reinforced by ribs formed inside the reinforcing plate, the strength higher than that of the rib structure cannot be obtained.
An object of the present invention is to solve the problems of the above-mentioned conventional reinforcing structure.

According to the first aspect of the present invention, a bottomed box-shaped school bag body 3 having a pair of facing side plates 1 and a front plate 2 and a backing plate 15 facing each other at a position orthogonal to the side plates 1 is formed. In the reinforcing structure of the school bag, a square opening 4 is formed at the upper end of the school bag main body 3 and a reinforcing plate 5 is attached to the outer periphery of the end portion of the opening 4.
The reinforcing plate 5 includes a strip-shaped intermediate reinforcing portion 6 that reinforces the outer periphery of the opening 4 of the front plate 2.
A pair of strip-shaped side plate reinforcing portions 7 extending on both sides of the intermediate reinforcing portion 6 are provided to reinforce the outer periphery of the opening 4 of the pair of side plates 1.
Each side plate reinforcing portion 7 is wider than the intermediate reinforcing portion 6 and has a drum-shaped portion 8 that bulges in the plane direction on both sides in the width direction thereof. A concave recess 9 is formed,
It is a reinforcing structure of a school bag having a reinforcing plate 10 that is detachably fitted in accordance with the recessed portion 9.

The present invention according to claim 2 is based on the reinforcement structure of the school bag according to claim 1.
The reinforcing plate 5 is a reinforcing structure of a school bag composed of a connecting body of a pair of symmetrical resin plates 5a and 5b.

The present invention according to claim 3 has the present invention according to claim 2 in the reinforcing structure of the school bag according to claim 2.
The intermediate reinforcing portion 6 of each of the resin plates 5a and 5b has a reinforcing structure of a school bag in which an insertion groove 12 of a reinforcing steel wire 11 is formed up to the end thereof.

Each side plate reinforcing portion 7 of the invention according to claim 1 is wider than the intermediate reinforcing portion 6 and has drum-shaped portions 8 bulging in the plane direction on both sides in the width direction thereof. It is a reinforcing structure of a land cell having a flat drum-shaped concave portion 9 formed by leaving a peripheral portion of 8 and having a reinforcing plate 10 that is detachably fitted in accordance with the concave portion 9.
With this configuration, it is possible to effectively support the external force applied in the direction of compressing the opening 4 at the upper end of the school bag main body 3. Further, since the flat drum-shaped recess 9 and the reinforcing plate 10 fitted therein are provided, the external force in the direction of compressing the opening 4 can be supported more effectively. At the same time, the desired compressive strength can be obtained by selecting the material of the reinforcing plate 10.
This drum-shaped part 8 also has a design aesthetic.

According to the second aspect of the present invention, the reinforcing plate 5 is composed of a pair of symmetrical resin plates 5a and 5b.
With this configuration, the resin plates 5a and 5b are formed to be approximately half the size of the conventional reinforcing plate. Therefore, the size of the molding die for the resin plates 5a and 5b can be reduced to about half the size of the molding die for the conventional reinforcing plate, and the manufacturing cost of the reinforcing plate is significantly reduced. be able to.

According to the third aspect of the present invention, the insertion groove 12 of the reinforcing steel wire 11 is formed in the intermediate reinforcing portion 6 of each of the resin plates 5a and 5b up to the end thereof.
With this configuration, the reinforcing steel wire 11 can be inserted into the insertion groove 12 to connect the two resin plates 5a and 5b. In this case, due to the presence of the reinforcing steel wire 11, when the reinforcing plate 5 is sewn to the opening 4, the two resin plates 5a and 5b which are the divided bodies are not separated, so that the workability is improved.

The main part perspective view of the reinforcement structure of the school bag of this invention. An exploded perspective view of the main part of the reinforcement structure of the school bag. A plan view (A) showing one of the resin plates 5a used for the reinforcing structure of the school bag, a BB sectional view (B) of FIG. 3 (A), and a CC sectional view (C) of FIG. 3 (A). FIG. 3 (C) is an enlarged view (D) of the D portion, a back view (E) of the resin plate 5a, and FIG. 3 (E) FF sectional view (F). Back view (A), side view (B), C portion enlarged view (C), front view (D), and plan view (E) of the reinforcing plate 10 used for the reinforcing structure of the school bag. An explanatory view (A) showing a process of fitting the reinforcing plate 10 to the resin plates 5a and 5b of the reinforcing structure of the school bag, a plan view (B) after fitting, and an overall view (C) of the reinforcing plate 5.

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a main part of the reinforcing structure of the school bag of the present invention, and FIG. 2 is an exploded perspective view of the main part of the reinforcing structure of the school bag.
As shown in FIG. 1, the school bag itself has a pair of facing side plates 1, and a bottomed box-shaped school bag body 3 in which a front plate 2 and a backing plate 15 are arranged at positions orthogonal to the side plates 1. .. A square opening 4 is formed at the upper end of the school bag main body 3.

The opening 4 is sewn around the outer periphery of the upper end portions of the pair of side plates 1 and the front plate 2 with the inner surface of the reinforcing plate 5 in contact with the outer periphery.
The reinforcing plate 5 reinforces the outer periphery of the upper end of the front end plate 2 side of the opening 4 and the outer circumference of the upper end of the pair of side plates 1 side of the opening 4 on both sides of the intermediate reinforcing portion 6. It has a pair of strip-shaped side plate reinforcing portions 7 that extend.

An end portion of a covering lid 16 that covers the opening 4 of the school bag main body 3 is attached to the backing plate 15. As shown in FIG. 2, the decorative fabric 18 is adhered to the outer surface of the reinforcing plate 5, and when the reinforcing plate 5 is sewn to the school bag main body 3, the edge is covered at the position on the upper end side of the reinforcing plate 5. The band 17 is covered in a frame shape. The edge covering band 17 comes into contact with the edge of the covering lid 16 when the covering lid 16 is put on the opening 4.

FIG. 3 is a diagram showing one resin plate 5a used for the reinforcing structure of the school bag of the present invention, and FIG. 4 is a diagram showing a reinforcing plate 10 used for the reinforcing structure of the school bag. Further, FIG. 5 is an explanatory diagram showing a process of forming the reinforcing plate 5 by combining the reinforcing plate 10 with the resin plates 5a and 5b.
The present invention is characterized by the configuration of the reinforcing plate 5.
As shown in FIGS. 2 and 5C, the reinforcing plate 5 of this example is composed of a pair of symmetrical divided resin plates 5a and 5b.
As shown in FIG. 3, a part of the intermediate reinforcing portion 6 and the side plate reinforcing portion 7 are formed on the resin plate 5a. Since the other resin plate 5b is symmetrical with the one resin plate 5a, the description thereof will be omitted.
In 5a on one of the resin plates, a plurality of parallel bending grooves 19 that allow bending are formed in the width direction at the boundary between a part of the intermediate reinforcing portion 6 and the side plate reinforcing portion 7.

As shown in FIGS. 1 and 2, the upper edge of the side plate reinforcing portion 7 of the reinforcing plate 5 is curved so as to be aligned with the end edge of the opening 4 of the school bag main body 3. Further, the lower edge thereof is curved toward the bottom of the school bag main body 3. That is, the side plate reinforcing portion 7 has a drum-shaped portion 8 that is wider than the intermediate reinforcing portion 6 and whose planes bulge on both sides in the width direction, leaving the peripheral portion of the drum-shaped portion 8. A concave portion 9 is formed in a flat drum shape as shown in FIG. 3 (E).
As shown in FIGS. 3 (E) and 3 (F), a plurality of ribs 13 parallel to each other in the longitudinal direction and a recess 20 for confirming the orientation are formed inside the recessed portion 9. Each rib 13 is formed mainly for the purpose of preventing the reinforcing plate 10 from falling off when the reinforcing plate 5 is sewn after the reinforcing plate 10 is combined. On the other hand, when the reinforcing plate 10 is not attached to the resin materials 5a and 5b, the main purpose of the rib 13 is to reinforce the side plate reinforcing portion 7.

As shown in FIGS. 3 and 5, a reinforcing plate 10 that matches the shape of the recessed portion 9 of the resin plates 5a and 5b is fitted.
As shown in FIG. 4A, a rib groove 14 for inserting the rib 13 is provided on one surface 10a side of the reinforcing plate 10 at a position consistent with the rib 13 in the recessed portion 9 of the resin plate 5a. A recess 21 is formed so as to have and further confirm the orientation. The recess 21 for confirming the orientation is formed at a position that matches the recess 20 of the recess 9 of the resin plate 5a when facing the recess 20. As shown in FIG. 4 (E), the other surface 10b of the reinforcing plate 10 is formed flat.
The reinforcing plate 10 may be made of the same material as the resin plates 5a and 5b, or may be formed of a metal material. The material can be changed according to the desired strength.

An insertion groove 12 is formed in the intermediate reinforcing portion 6 of the resin plate 5a from the bent portion 19 of the resin plate 5a to the end of the intermediate reinforcing portion 6.
The insertion groove 12 inserts the reinforcing steel wire 11 and connects the two resin plates 5a and 5b via the insertion groove 12. Further, this also improves workability by not separating the two resin plates 5a and 5b, which are the divided bodies, when the reinforcing plate 5 is sewn to the opening 4.

As shown in FIG. 5A, the reinforcing plate 5 is fitted with one surface 10a of the reinforcing plate 10 into the recessed portion 9 of both resin plates 5a and 5b. At the same time, as shown in FIG. 5C, the reinforcing steel wire 11 is inserted into each insertion groove 12. Then, the decorative fabric 18 (FIG. 2) is adhered to the concave portion 9 of the reinforcing plate 5 and the surface opposite to the surface on which the insertion groove 12 is formed.
The reinforcing steel wire 11 is fixed by closing the insertion groove 12 with, for example, an adhesive tape.
Then, the reinforcing plate 5 is bent at the bent groove 19, and the upper edge of the reinforcing plate 5 is aligned with the end edge of the opening 4 of the school bag main body 3 and sewn.

Since the lower edge of the side plate reinforcing portion of the reinforcing plate of the conventional school bag did not bulge, the range that can be reinforced was limited.
In this embodiment, each side plate reinforcing portion 7 is formed with a drum-shaped portion 8 whose upper edge and lower edge bulge wider than the intermediate reinforcing portion 6, and the school bag main body is formed by the amount that the lower edge bulges. The side plate 1 side of the opening 4 at the upper end of 3 can be reinforced over a wide range.
Further, in this embodiment, since the reinforcing plate 5 is composed of a pair of symmetrical resin plates 5a and 5b, the resin plates 5a and 5b are substantially half the length and size of the conventional reinforcing plates. Is formed in. Therefore, the size of the molding die for the resin plates 5a and 5b can be reduced to about half the size of the molding die for the conventional reinforcing plate, and the manufacturing cost of the reinforcing plate is significantly reduced. be able to.

It can be used as a structure to reinforce the opening at the top of the school bag.

1 Side plate 2 Front plate 3 School bag body 4 Opening 5 Reinforcing plate 5a One resin plate 5b The other resin plate

6 Intermediate reinforcing part 7 Side plate reinforcing part 8 Drum-shaped part 9 Recessed part 10 Reinforcing plate 10a One side 10b The other side 11 Reinforcing steel wire 12 Insertion groove

13 Ribs 14 Rib grooves 15 Backing plate 16 Cover cover 17 Edge covering band 18 Decorative fabric 19 Folded part 20 Recessed part 21 Recessed part

Claims (3)

A bottomed box-shaped school bag body (3) having a pair of facing side plates (1) and a front plate (2) and a backing plate (15) facing each other at a position orthogonal to the side plates (1) is formed. In the reinforcing structure of the school bag, a square opening (4) is formed at the upper end of the school bag body (3), and a reinforcing plate (5) is attached to the outer periphery of the end of the opening (4).
The reinforcing plate (5) includes a strip-shaped intermediate reinforcing portion (6) that reinforces the outer periphery of the opening (4) of the front plate (2).
The outer circumference of the opening (4) of the pair of side plates (1) is reinforced, and a pair of strip-shaped side plate reinforcing portions (7) extending on both sides of the intermediate reinforcing portion (6) are provided.
Each side plate reinforcing portion (7) is wider than the intermediate reinforcing portion (6) and has a drum-shaped portion (8) that bulges in the plane direction on both sides in the width direction thereof, and the drum-shaped portion (8). A flat drum-shaped recess (9) is formed, leaving the peripheral edge of the surface.
Reinforcing structure of a school bag having a reinforcing plate (10) that is detachably fitted in accordance with the recessed portion (9). In the reinforcement structure of the school bag according to claim 1,
The reinforcing plate (5) is a reinforcing structure of a school bag composed of a connecting body of a pair of symmetrical resin plates (5a, 5b). In the reinforcement structure of the school bag according to claim 2,
A reinforcement structure of a school bag in which an insertion groove (12) of a reinforcing steel wire (11) is formed up to the end of the intermediate reinforcing portion (6) of each resin plate (5a, 5b).

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