JPS6015456Y2 - school bag - Google Patents

Description

[Detailed description of the invention] This invention uses a front plate and a back plate to form the front and rear walls of the box-shaped main body, and a U-shaped bent oblong plate (so-called gusset) to form the bottom wall and left and right side walls of the main body. Regarding a school bag made up of.

Conventional school bags had the following drawbacks.

a The core plate and the back plate of the horizontally long board are connected only by the rear edge of the exterior sheet extending from the rear edge of the core plate, and since the exterior sheet itself is flexible to begin with, the rear edge In this process, the left and right side parts of the oblong plate (the left and right side walls of the main body) easily swing left and right relative to the back plate, and the rear part is damaged, and the rear edge of the core plate slides against the back plate and turns over. .

b) Sewing threads used to sew the core plate and the outer sheet together in order to fix the reinforcing plate that also serves as a decorative core interposed between the core plate and the outer sheet, or the outer surface of the left or right side wall of the main body (the outer surface of the outer sheet) The sewing threads used to sew the horizontal pockets (on the outside surface of It can be cut.

The sewing threads that sewn the left and right sides and the lower side of the C front plate bent to the rear side to the inside of the front side of the oblong plate are exposed on the inner surface of the main body, and these also protrude into the main body. It gets caught and worn out due to the loading and unloading of stored items.

Therefore, in the present invention, to solve the above drawback a, an interior sheet is pasted on the inner surface of the core plate, and the rear side of this interior sheet is extended from the rear edge of the core plate in the same way as the exterior sheet. While overlapping with the rear side of the seat, it is sewn together with this to the backboard.
In other words, by doubly connecting the oblong plate to the back plate at the rear side of the exterior sheet and the rear side of the interior sheet, Furthermore, each of the drawbacks of C was resolved by folding back a part of the sheet interposed between the front side of the oblong board and the front board and covering the sewing threads with it. be.

The present invention will now be described in detail with reference to the illustrated embodiments.

As shown in FIG. 1, this school bag has a front side of a horizontally long plate 1 bent into a U shape, a lower side and left and right sides bent toward the rear of the front plate 2, and an expandable and retractable front pocket 3. After sewing the flexible bellows-shaped leather peripheral wall sheet 4 to the rear periphery, the rear side of the oblong plate 1 is sewn to the lower side and left and right sides of the front of the back plate 5, and then the back plate A cover plate 6 is sewn to the upper side of the rear surface of the main body 5, and the horizontally long plate 1, front plate 2, and back plate 5 together form a box-shaped main body 7.

The horizontally long plate 1 itself has a structure as shown in Fig. 4 (developed view) and Fig. 5 (enlarged end view taken along the line ■-■ in Fig. 4), and its fabrication was carried out as follows. .

That is, as shown in FIG. 6, the outer surface (
(lower surface in the figure) and the inner surface of the leather exterior sheet 9, which is longer and wider (upper surface in the figure).
and a belt-shaped reinforcing plate 10.10 that also serves as a decorative core between them.
After polymerizing and pasting with adhesive with the left and right reinforcing pieces 11.11 interposed, the reinforcing plate 10.10 and the reinforcing piece 1
1 and 11, the core plate 8 and the exterior sheet 9 are sewn together with threads 12 and 13, 13.
Then, in order to fix the horizontal pocket 14 to the outer surface (lower surface in the figure) of the outer sheet 9, the outer sheet 9 and the core plate 8 are sewn together with sewing thread 15 along the periphery of the horizontal pocket 14. suture.

Next, on the inner surface of the core plate 8 (the upper surface in FIG. 6), an interior sheet 16 made of nonwoven fabric is attached with adhesive to the inner surface of the core plate 8 (the upper surface in FIG. 6), which has the same length but a slightly wider width. The rear side portion 161 of the interior sheet 16 extends by a required width from the rear edge 81 of the core plate 8 and the exterior sheet 16 similarly extends from the rear edge 81 by a required width. The rear side portion 91 of the sheet 9 is also polymerized and adhered using an adhesive.

The sewing thread 1 was exposed on the inner surface of the core plate 8 due to such adhesion.
2..., 13, 13.15 are covered by the interior sheet 16.

After that, the front edge 8□, left and right edges 83.83 of the core plate 8
The front side 9□ and the left and right ends 93, 93 of the exterior sheet 9, which extend by the required width, are folded back and adhered to the interior sheet 16 with the same adhesive, and the left and right reinforcing pieces 11 are attached to the interior sheet 16. .11, the left and right ends 93.93 of the exterior sheet 9, the interior sheet 16, the core plate 8, and the exterior sheet 9 are sewn together with sewing threads 17.17, and are then polymerized and pasted as described above. A cutout window 18 and holes 19, 19 for attaching a known lid stopper (not shown) are formed in the center of the exterior sheet 9, core plate 8, and interior sheet 16, and rivets are inserted in the left and right sides. Hole 20 for...
. . , and complete horizontal board 1.

Therefore, the horizontally long plate 1 configured in this way is bent at two folds 21 and 21 in the middle to form a U shape,
After sewing the left and right sides and lower side of the front plate 2 and the rear periphery of the peripheral wall sheet 4 of the front pocket 3 to the front side at the same time, the rear side 91 of the exterior sheet 9 and the interior sheet 16 are sewn together.
The rear side part 161 of the back plate 5 is sewn to the back plate 5.

That is, the U-shaped rear periphery of the peripheral wall sheet 4 of the front pocket 3 is placed inside the front side of the U-shaped oblong plate 1, and the rear side of the front plate 2 is placed inside this rear periphery. Position the lower side 21 and the left and right sides 2□, 2□ bent to and the left and right sides 2°, 2°,
The rear side 4 □ of the peripheral wall sheet 4 is made to extend from the edge of the lower side 2 □ of the front plate 2 and the edges of the left and right sides 2 □, 2 □, and is polymerized and bonded with an adhesive. After sewing the front side of the oblong plate 1, the rear circumference of the peripheral wall sheet 4, the lower side 2□ of the front plate 2, and the left and right sides 2□, 2□ with sewing thread 22, it is extended as described above. The rear side 41 of the peripheral wall sheet 4 is folded back to form the lower side 21 and left and right sides 2°, 2 of the front plate 2.
゜It is pasted on top with adhesive.

Next, the rear sides 91 and 161 of the exterior sheet 9 and interior sheet 16 of the horizontally long board 1, which are overlapped and pasted, are bent outward with respect to the core plate 8, and these rear sides 91.16□ are attached to the back plate. 5, and is sewn to the back plate 5 with sewing threads 24 together with a belt-shaped cover sheet 23 made of leather.

In addition, the rear part 9. ．． 16. The back plate 5 and the covering sheet 23 are further bonded together with an adhesive.

In this way, the middle part between the folds 21 and 21 of the oblong plate 1 forms the bottom wall, the left and right sides thereof form the left and right side walls, and the front plate 2 forms the front wall that also serves as a partition between it and the front pocket 3, and the back A main body 7 is formed of which the plate 5 forms the rear wall, and the left and right side walls and bottom wall of the main body 7 are connected to the sewing threads 12 on the inner surface of the core plate 8.
......, 13.13.15 is attached to the interior sheet 16, and the sewing threads 22 on the lower side 21 and left and right sides 2□, 2□ of the front plate 2 are attached to the rear side 41 of the peripheral wall sheet 4. Since the sewing thread is covered and hidden, there is no need for the sewing thread to be exposed and protrude and get caught and worn out when stored items come in and out.

Further, since the horizontally long plate 1 is doubly connected to the back plate 5 by the rear side 9 □ of the exterior sheet 9 and the rear side 161 of the interior sheet 16, the rear side of the exterior sheet 9 is Part 9□
Since it is connected to the back plate 5 by a chisel, it can easily swing left and right with respect to the back plate 5, and the rear edge 9□ will not be cut or damaged. Since the rear edge 161 of the interior sheet 16 is interposed between them, there is no possibility that the rear edge 8□ will come into sliding contact with the back plate 5 and be turned over.

Furthermore, the lower side 21 of the front plate 2 and the left and right sides 2°, 2
Since the edge of □ is also covered by the rear side 4□ of the peripheral wall sheet 4, there is no possibility that the stored items will get caught there and turn over.

In the above embodiment, the core plate 8 and the exterior sheet 9 are sewn together on the horizontally long plate 1 by sewing threads 12...
13, 13, and 15, an interior sheet 16 is attached to the inner surface of the core plate 8, and this interior sheet 16 is used to secure the core plate 8.
Sewing thread 12 on the inner surface of...

13.13.15 was completely covered up, but the 7th
As shown in FIG. 8, after superposing the interior sheet 16 on the inner surface of the core plate 8 through a soft cushion plate 25 made of foamed synthetic resin and bonding these with adhesive,
The exterior sheet 9, the core board 8, the cushion board 25, and the interior sheet 16 are sewn together with threads 12..., 13, 13.
15, and these sewing threads are buried in the soft cushioning board 25 along with the interior sheet 16 at each seam, it is possible to prevent the stored items from getting caught when they come in and out.

In addition, in the above, the interior sheet 16 is pasted over the entire length of the inner surface of the core plate 8, but in the case of a school bag in which a separate bottom plate is installed on the bottom wall of the main body 7, the bottom plate is attached to the inner surface of the core plate 8. Since the inner surface of the bottom wall can be protected, it is not necessarily necessary to cover it with an interior sheet. In such a case, as shown in FIG. It is only necessary to attach interior sheets 16, 16 to the left and right side parts of the left and right sides, excluding the space between 21, respectively.
In addition, since the lower side 21 of the front plate 2 is protected by the front side of the bottom plate being positioned thereon, the rear side 41 of the peripheral wall sheet 4 is attached to the lower side 21. There is no need to cover the sewing thread 22.

Further, in the above embodiment, the rear side 41 of the peripheral wall sheet 4 of the front pocket 3 is folded back and attached onto the lower side 21 and the left and right sides 2° and 22 of the front plate 2, so that the sewing thread 22 However, as shown in FIG. The rear side 41 is overlapped with the lower side 21 of the front plate 2 and the left and right sides 2□, 2□, adhered with adhesive and sewn with sewing thread 22, and then the rear side 26 of this belt-shaped sheet 26 □ is folded back and pasted with adhesive on the lower side 2□ and left and right sides 2□, 2□ of the front plate 2.
Even if the sewing thread 22 is covered by the rear side 26□ of the sewing machine 6, the same effect as in the above embodiment can be obtained.

Also in this case, when the lower side 2□ of the front plate 2 is protected by the front side of the bottom plate as described above, the rear side 261 of the strip sheet 26 is pasted on the lower side 21. It is not necessarily necessary to do so.

Note that the reference numeral 27 in the figure represents reinforcing metal fittings that are fitted and fixed to the left and right lower end corners of the back plate 5.

As is clear from the above description, the school bag of the present invention has the following effects.

■ The oblong plate that makes up the so-called gusset is doubly connected to the back plate by the rear side of the interior sheet and the rear side of the exterior sheet attached to the inner surface of the core plate, so the left and right side of the main body The left and right sides of the horizontally long plates that make up the sides can easily swing left and right relative to the back plate, preventing the rear edge of the exterior sheet from being cut and damaged, and the rear edge of the core plate and the back Since the rear edge of the interior sheet is interposed between the plates, there is no possibility that the rear edge of the core plate will slide into contact with the back plate and be turned over.

■ Attach the interior sheet to the inner surface of the core board, and also place it between the front side of the oblong board and the front plate, fold back a part of the sheet sewn together, and attach it to the left and right sides of the front board. This prevents the sewing threads from protruding exposed on the inner surface of the core plate and on the left and right sides of the front plate, which gets caught and worn out due to the movement of items in and out of the main body, and prevents the threads from being worn out. Since the edges of the left and right sides are also covered by the sheet, there is no possibility that the stored items will get caught there and turn over.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is an enlarged partial end view taken along line I--I in Fig. 1, and Fig.
The figures are an enlarged partial cross-sectional view taken along the same <n-n line, Fig. 4 is a partially omitted developed plan view of the oblong plate, Fig. 5 is an enlarged end view taken along the ■-■ line of Fig. 4, and Fig. 6 is A partially omitted developed plan view showing the manufacturing process of the above-mentioned oblong plate, Fig. 7 is a partially omitted developed plan view showing another example of the oblong plate, and Fig. 8 is an enlarged cross-sectional view taken along the line IV-IV of Fig. 9 is a partially omitted developed plan view showing still another example of the horizontally long plate, and FIG. 10 is a sectional view of the main parts showing another example of the structure in which the front plate is sewn to the horizontally long plate. . 8...core plate, 9...exterior sheet, 9□
...Rear side of exterior sheet, 1...Horizontal plate, 5...Back plate, 2...Front plate, 21, 2□・
...Lower side and left and right sides of the front plate, 7...
Main body, 4... Peripheral wall sheet, 26... Strip sheet, 16... Interior sheet, 16□...
...The rear part of the interior seat.

Claims (1)

[Scope of utility model registration request] The rear edge of the exterior sheet attached to the outer surface of the core plate is extended from the rear edge of the core plate to provide a seam allowance, and the horizontally long plate is bent into a U shape, and placed inside the front side of the horizontally long plate. At the same time, the bent left and right sides and lower sides of the front plate are sewn together, and the seam allowances are sewn to the lower and left and right sides of the back plate, and the bottom wall and left and right side walls of the box-shaped main body are covered with this oblong plate. , also the front wall by the front plate,
Furthermore, in a school bag in which the rear wall is configured by a back plate, a sheet is interposed between the front side of the horizontally long plate and the front plate, so that the left and right sides and the lower side of the front plate are connected to the front side of the horizontally long plate. A part of the sheet is folded back inside the main body and pasted on the left and right sides of the front plate, and at least on the inner surface of the core plate corresponding to the left and right side walls of the main body. , an interior sheet is pasted, and the rear side of this interior sheet extends from the rear edge of the core plate, and is sewn together with the rear side of the exterior sheet to the left and right sides of the back plate while overlapping with the rear side of the exterior sheet. A school bag that is characterized by: