JP3387874B2 - School bag and method of manufacturing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a school bag and its manufacturing method.

[0002]

2. Description of the Related Art Usually, a school bag has a vertically long rectangular main storage portion having an open upper portion.
A front plate 13 is sewn to the other surface side of the gullet member 11 composed of b and 11b and a bottom surface 11a, and finally, a predetermined width on one surface side of the gullet member 11 is bent to a seam margin portion 11c. Is bent outward, and the bent seam allowance portion 11c is sewn along the bottom side and both sides of the back plate 12.

It is said that the suturing of the gore member 11 to the back plate 12 is the final step of the school bag manufacturing process, and is the most difficult work, and requires skill. That is, to sew this gore member 11 to the back plate 12, the back plate 12
Start stitching from the upper end of one side (for example, start stitching from the right upper end in the example of FIG. 2), and sequentially sew downward, and change the stitching direction at the lower part to a substantially right angle to the direction along the bottom of the back plate 12. Further, when the lower side of the other side of the back plate 12 is sewn, the stitching direction is changed again to a substantially right angle along the other side, and thus the stitching distance becomes long, and the stitching material is increased. However, there is a problem in that an unexpected positional deviation (a positional deviation as shown by the chain line in the upper left part of FIG. 2) is likely to occur, and the shape is not accurate and the appearance is apt to deteriorate.

Particularly, in the case of a school bag, the bent seam allowance portion 11
At the corner portion of c (the corner portion between the bottom surface 11a and the side surface 11b), as shown most clearly in FIG.
1, 1d2, 11d3 ... are inserted so that they can be closely attached to the back plate 12 so that they can be joined together.
At the parts d1, 11d2, 11d3 ..., the positions of the gore member 11 and the back plate 12 are likely to shift.

Further, the suturing of the flat body is relatively easy, but since the front plate 12 of the gore member 11 is already sewn into a three-dimensional shape, the sutured portion is accurately positioned before the suturing. It is difficult to join and hold them in relation to each other, and the handling at the time of suturing becomes complicated, and the inner side of the sewing line 1a is separated from the back plate 12 at the time of suturing as shown by a thick chain line in the upper right part of FIG. Due to the reduction of the contact surface with the back plate 12, displacement is likely to occur, making suturing difficult.

Further, the bent seam allowance portion 11 of the conventional gore member 11
Since c is made of only a soft material such as natural leather and has elasticity, when the elastic gusset member 11 is sewn to the back plate 12 made of a hard material, as shown by a chain line on the left side of FIG. There is a problem that the gore member 11 is excessively projected, and the above-mentioned problems largely appear due to local elongation of the gore member 11, and the back plate 12 and the gore member 11 cannot be accurately sutured. Had.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a school bag and a manufacturing method thereof, in which the suture between the gore member 11 and the back plate 12 can be easily performed while accurately maintaining the mutual positional relationship. The challenge is to provide a method.

[0008]

In order to achieve the above object, the present invention comprises a side wall portion 11b, 11b bent at a right angle on both sides of a bottom surface portion 11a in series to form a gullet member 11. A backpack 12 is sewn to one surface of the member 11 and a front plate 13 is sewn to the other surface of the member 11 to form a main storage portion 10 having an upper opening. The reinforcing plate member 20 is adhered, and the bottom face portion 11a and the side face portion 11 of the gusset member (11) of the reinforcing plate member 20 are attached.
b and 11b, and a bending groove or a discontinuous cutting groove, which is adapted to the bending portion of the bending seam portion 11c that is bent outward on one surface side of the gore member 11, respectively. Two
, 1, 21, 21 ... Are provided and the technical means is taken.

Therefore, in the school bag of the present invention, since the reinforcing plate member 20 is also attached to the bent seam allowance portion 11c, the bent seam allowance portion 11c is sewn at the time of sewing by selecting the material of the reinforcing plate member 20. An action that can be performed so as not to expand and contract, and an action that the seam allowance portion 11c is integrally bent, that is,
It has a seam margin reinforcing effect.

Since the reinforcing plate member 20 is provided with bending cut grooves or discontinuous cutting grooves 21, 21, 21 ..., This bending cutting groove or discontinuous cutting groove 21 is formed. , 2
1, 21 ... By bending the gusset member 11 and the front plate 13 into a shape of a part of a rectangular parallelepiped with high dimensional accuracy, it is possible to easily hold the shape, that is, to secure a bending line. To present.

Next, in the method of the present invention according to claim 2, the bottom surface portion 11
A side wall portion 11b, 11b bent at a right angle is connected to both sides of a to form a gore member 11, which is made of a material that can be sewn on the inner surface side of the gore member 11 and has a bottom surface portion 11a.
And the side portions 11b and 11b, and the gusset member 1
The fold groove or discontinuous ridge groove 21 or 2 is formed in the portion of the fold seam allowance portion 11c on the one surface side corresponding to the fold portion.
After attaching the reinforcing plate member 20 provided with 1, 21, ..., The other side of the gill member 11 is sewn along the bottom side and both sides of the front plate 13, and then the one side of the gland member 11 is sewn. Bending seam allowance 11c
Bending kerfs or discontinuous kerfs 21, 21, 21 ...
· A technical means is adopted in which a part is bent outward and overlapped along the bottom side and both sides of the back plate 12 and one side of the gill member 11 is sewn to the back plate 12. is there.

Therefore, according to the method of the present invention, the above-mentioned gore member 11 is used.
With the reinforcing action and the bending line securing action, the gullet member 11 is adapted and brought into contact with a predetermined position of the back plate 12 so that the both can be sewn accurately, reliably and easily.

Next, according to the method of the present invention of "claim 3", the side portions 11b, 11b bent at right angles to both sides of the bottom portion 11a.
And the bottom portion 1 of the gullet member 11 made of a material that can be sewn on the inner surface side of the gullet member 11.
A bending groove or a discontinuous cut is formed in each of the bent portions of the lapping member 1a and the side surface portions 11b and 11b and the bent portion of the bending seam margin portion 11c on the one surface side of the gore member 11. Groove 21,
A reinforcing plate member 20 provided with 21, 21, ... Is attached, and at a portion overlapping the bent seam allowance portion 11c of the reinforcing plate member 20, a rounded start end side cut 11d1 provided in the bent seam allowance portion 11c. The portion that fits between the rounded end side cut 11d3 is formed by omitting the reinforcing plate 20 and stitching the other side of the gullet member 11 along the bottom side and both side sides of the front plate 13 and then The back seam 1 is formed by bending the bent seam allowance portion 11c on one surface of the member 11 to the outside at the bending cut grooves or discontinuous cut grooves 21, 21, 21 ...
The technical means is provided so that one side of the gill member 11 is sewn to the back plate 12 by stacking the two sides along the bottom side and both side sides.

Therefore, according to the method of the present invention, in addition to the above-mentioned action, the reinforcing plate member 20 at the rounded notch portion is omitted, so that the rounded portion can be spread out in a good shape, and the gore member 11 and the back plate 12 can be spread. The present invention has the effect of making it possible to easily adapt the positional relationship of.

[0015]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the figure, 10 is a main storage part which constitutes a school bag body part, 2 is a cover, and 3 is a backpack. The main storage portion 10 has a side wall portion 11b and a side wall portion 11b that are bent at right angles in series on both sides of a bottom surface portion 11a to form a gull member 11. One side of the gull member 11 (a gland member that is bent to be three-dimensional). 1
1 on one side and the back plate 12 on the right side in FIG. 2 and the front plate 1 on the other side.
It is the same as the conventional one that the upper part is opened by sewing 3 together.

That is, the gusset member 11 has a bottom surface portion 11a.
And side portions 11b, 11b rising up at right angles on both sides thereof are formed in a substantially U-shaped front face. And this gore member 11
A front plate 13 is first sewn to the other surface side of the front plate 13. The front plate 13 has a seam allowance portion 1 which is bent toward the inner surface at both sides and a bottom side thereof.
1e (see FIG. 2)), the seam allowance portion 11e is fitted inside the three-dimensionally folded gore member 11, and the seam allowance portion 11e is provided at the sewing line 1b as shown in FIG. 11
It is sewn to the edge portion on the other surface side (the left end side in FIG. 2).

The back plate 12 may be sewn in the same manner as the front plate 13 is sewn, but since the main storage portion 10 is deep,
There is no suitable device for performing such suturing, and a deep portion even for hand-sewn becomes a very difficult work. Therefore,
Usually, one surface side (right end side in FIG. 2) of the gore member 11 is bent outward with a predetermined width as a bent seam allowance portion 11c.
It is the same as in the prior art that 1c is superposed on the edges of the bottom and both sides of the back plate 12 and is sewn at the sewing line 1a (see FIG. 2).

In addition, the cover 2 has a back plate 12 at the base end.
Is sewn to the upper side portion, and the free end side hangs down through the upper part of the storage part 10 toward the front of the front plate 13, and the free end tip is placed on the bottom surface 1.
It can be detachably locked to 1a. Further, a pair of the backpack belts 3 are prepared, and the upper end thereof is the backboard 12
Conventionally, the entire length can be adjusted by attaching the connecting ring provided at the center of the upper part of the product to the connecting ring at the lower end by connecting it to the connecting ring provided on the bottom face 11a and inserting a buckle in the middle. Is the same as.

According to the present invention, a reinforcing plate member 20 made of a sewn material is attached to the inner surface of the gore member 11.
The bottom surface portion 11a of the gusset member (11) of the reinforcing plate member 20.
And the side surface portions 11b, 11b, and the bending seam portion 11c that is bent outward on the one side of the gore member 11, at a portion that fits the bending groove or the groove for bending. The continuous kerfs 21, 21, 21 ... Are provided.

Generally, the gore member 11 is made of a soft material such as natural leather. Then, the bottom surface portion 11a excluding the stitched portion
A hard reinforcing plate is attached to both side surfaces 11b and 11b so that the main storage portion 10 holds the main storage portion 10 so as not to be deformed. That is, the main part of the gore member 11 is configured to be hard, and both end parts (both ends in the width direction are referred to as one surface side and the other surface side in the present application) of the cloth material 11 are left as flexible cloth as seam allowance parts. Is.

In the bent seam allowance portion 11c made of only the above-mentioned conventional soft cloth, the stitching portion is thin at the time of stitching and it is easy to stitch,
In addition, the bent seam allowance portion 1 is advantageous in that it can be sewn with good appearance.
1c is said to have the advantage that it is flexible and somewhat stretchable, has flexibility in the suturing process, and is easy to suture. However, if the front plate 13 is already sewn to the other surface side of the gusset member 11 of the school bag, it becomes necessary to handle this gusset member 11 as a three-dimensional object,
The reality is that these advantages cannot be said.

That is, in the state where the front plate 13 and the gore member 11 are sewn together, the shape on the side of the bent seam allowance portion 11c is not constant but individually different. Generally, back plate 1
When viewed from the 3 side, the upper side of the gore member 11 bent in a U shape is opened. Then, while sequentially correcting this shape, the two must be sewn while aligning with the rectangular back plate 12, and further, the suturing work should be performed in consideration of expansion and contraction of the bent seam allowance portion 11c. If you try to do it, you will have to pay attention to multiple places at the same time, work will be required, and the yield will be poor.

Therefore, in the present invention, the bent seam allowance portion 11 is provided.
By suppressing the flexibility and stretchability of c and improving the shape retention property instead, it is possible to easily and surely perform the positioning, and to easily suture the gore member 11 and the back plate 12 without requiring skill. As the reinforcing plate member 20 made of the sewn material, a material that allows the needle of an industrial sewing machine such as a cardboard, a resin plate, and a fibrous resin plate to be inserted, and has appropriate strength and hardness. Can be used.

The gusset member 11 is constructed in such a manner that the surface material is attached to the reinforcing plate member 20. Further, the front plate 13 side (other surface side) of the gore member 11 is configured such that the front cloth is folded back to the back side of the reinforcing plate member 20 with a predetermined width so that the wood end face of the reinforcing plate member 20 is not exposed. is there. In addition,
The reference numeral 22 shown most clearly in FIG. 5 is a core material, and this core material 22 is made of sponge or the like, and is mainly used for the purpose of decoration, and the seam line 1c along the outside thereof.
Local bulges are formed on the gusset surface defined by and.

[0025]

Further, the discontinuous kerf 21 shown in FIG. 4 is a so-called perforation in which small holes or short slits are juxtaposed at predetermined intervals (the discontinuous kerf 2 in the vertical direction in FIG. 4).
1) may be used, or a relatively long slit portion may be provided so that only a part of the slit portion is continuous (discontinuous cut groove 21 in the lateral direction in FIG. 4). In addition, the kerf and the discontinuous kerf 21
Can be adjusted by adjusting the width and discontinuity of the kerf depending on the bending direction.In the case of valley folds, widen the kerf,
Of course, it is easier to bend if the length of the discontinuity is shortened.

According to the present invention, the folding seam allowance portion 11c of the gore member 11 is bent outward, and is overlapped along the edges of the bottom and both sides of the back plate 12 to sew both. It is the same as in the conventional case, and it is also the same as in the conventional case that the sewn portion is covered with the edging cloth 4 (see FIG. 6) folded in two in a U-shape and sewn together with the edging cloth 4. However, in the present invention, the bent seam allowance portion 11c is sewn to the back plate 12 together with a part of the reinforcing plate member 20.

The back plate 12 includes a substrate 12a and a surface material 12b.
It is also the same as that of the prior art in which the cushion material 12c is interposed between the two. Reference numeral 5 in FIG. 4 is a mark notch portion showing the center, and a mark is made at the center of the lower side of the back plate at the time of suturing, and the mark notch portion 5 is overlapped so as to fit the mark, and is sequentially placed on both sides. Bent seam margin 11c and back plate 12 toward
The portion where the and is overlapped is sandwiched by a sandwiching tool (not shown) such as a clip, and when suturing from one end, the suturing operation may be performed while sequentially removing the sandwiching tool.

According to the present invention, as described above, the bent seam allowance portion 11 is formed.
Since c is bent together with a part of the reinforcing plate 20 and further sewn to the back plate 12, the bent portion is defined by the cut grooves or the discontinuous cut grooves 21, 21, 21 ... It can be bent accurately and properly. Further, the reinforcing plate member 2 is also provided on the bent seam allowance portion 11c.
Since a part of 0 is attached, it is possible to prevent the bent seam allowance portion 11c from being stretched during sewing.

Next, in the method of manufacturing the school bag of the present invention, first, the side surface portion 1 bent at right angles to both sides of the bottom surface portion 11a.
It is the same as in the conventional art that the gusset member 11 is configured by connecting 1b and 11b in series. The present invention is made of a material that can be sewn on the inner surface side of the gore member 11 and has a bottom surface portion 1 of the gore member 11.
A bending groove or a discontinuous cut is formed in each of the bent portions of the lapping member 1a and the side surface portions 11b and 11b and the bent portion of the bending seam margin portion 11c on the one surface side of the gore member 11. Groove 21,
The reinforcing plate member 20 provided with 21, 21, ... Is attached.

The reinforcing plate member 20 may be the same as that of the first aspect, and the bending grooves or the discontinuous grooves 21, 21, 21 ... May be the same as those of the first aspect. Well, further, the method of attaching the reinforcing plate 20 is also claimed.
You can use the one described in.

The other side of the gore member 11 is attached to the front plate 1.
After sewn along the bottom side and both sides of 3, the gore member 11
The bending seam allowance portion 11c on one surface side is bent outward at the bending cut grooves or discontinuous cutting grooves 21, 21, 21 ... so as to extend along the bottom side and both side edges of the back plate 12. Overlap the gushing member 1
One side of 1 is sewn to the back plate 12. As described above, the suture between the gore member 11 and the front plate 13 is provided with the seam allowance portions 11e that are bent inward on the bottom side and both sides of the front plate 13, and the seam allowance portion 11e is bent. 11 is overlapped and sewn on the inner side of the bottom side portion and the both side portions on the other surface side, and at this time, since one surface side of the goose member 11 is released, the depth matches the width of the gore member 11. Since it is relatively shallow, it can be sewn with a conventional industrial sewing machine.

However, in order to sew the back plate 12 after the front plate 13 has been sewn, the bent seam allowance portion 11c must be bent outward so that both side surface portions 11b of the gore member 11 are located at the deepest place of the sewn portion. It becomes a vertical dimension (height dimension), and it is too deep for a general industrial sewing machine. Therefore, the bent seam allowance section 1
It is the same as in the prior art that the 1c is bent outward and sewn, and the edging material 4 is overlapped on the sewn portion and sewn.

Therefore, the bent seam allowance portion 11 bent outwardly.
Since it is only necessary to sew the c portion on the outside, it is possible to sew with a normal industrial sewing machine. However, since the width of the bending seam allowance portion 11c is set to the minimum size in terms of appearance, it is sewn in a narrow position. Line 1
It is necessary to provide a. At that time, since the gullet member 11 is erected in a standing wall shape immediately before the suture portion, this gullet member 1
When 1 touches a part of the industrial sewing machine and the like, the mutual positional relationship between the back plate 12 and the gore member 11 may shift, and this positional relationship shifts and the material of the bending seam margin 11c part described above. This overlaps with the elongation of the needle, which causes difficulty in suturing this part.

Therefore, if a part of the reinforcing plate member 20 which is divided in advance by the cut grooves or discontinuous cut grooves 21, 21, 21 ... Is attached to the bent seam allowance portion 11c, the bent seam portion 11c is bent. Since the seam allowance portion 11c can be integrally handled, the positional difference between the back plate 12 and the gore member 11 and the stretch of the cloth at the bent seam allowance portion 11c are restrained, which is a great leap. It facilitates suturing.

Next, the invention of claim 3 is a part of the reinforcing plate material 20 according to claim 2 which overlaps with the bent seam allowance portion 11c, and has a rounded start end side cut 11d1 provided in the bent seam allowance portion 11c. This reinforcing plate member 20 is omitted in a portion that fits between the rounded end side cut 11d3.

When the material forming the school bag has sufficient elasticity, the bent seam allowance portion 11c bent to the outside of the corner can be simply stretched to fit, but usually the notches 11d1, 11d2. 11d3 ... is put in so that the corners can be bent nicely. When the reinforcing plate member 20 is finely divided in this way, the adhesive may be peeled off. Therefore, in the present invention, the reinforcing plate member 20 at this portion is omitted in advance.

Further, according to the present invention, when the gusset member 11 is sewn to the back plate 12, expansion and contraction of the gusset member 11 side is restrained by the reinforcing plate member 20, so that it is difficult to adjust the positioning.
Therefore, the round cuts 11d1, 11d2, 11d3 ...
The reinforcing plate member 20 is omitted in this part in order to expect more stretchability in that part.

[0039]

According to the present invention having the above-mentioned structure, the reinforcing plate member 20 reinforces the cloth, and the bent portions can be defined.
It is possible to provide a school bag and a method of manufacturing the same in which the bent seam allowance portion 11c can be integrally handled, the stretch of the material is suppressed, and the sewing is facilitated.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a school bag of the present invention.

FIG. 2 is a schematic perspective view of a main part.

FIG. 3 is a developed partial plan view of a gore member.

FIG. 4 is a developed partial plan view of a gore member in another embodiment.

FIG. 5 is a cross-sectional view of a gore member.

FIG. 6 is a lateral cross-sectional view of a main part of the school bag of the present invention.

[Explanation of symbols]

11 Gourd member 11a Bottom part 11b side part 11c Fold seam allowance 11d1 Round cut 11d2 Round cut 11d3 Round cut 12 backboard 13 front plate 20 Reinforcement plate material 21 discontinuous kerf

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A45C 3/02

Claims (3)

(57) [Claims] 1. A gland member (1) in which side portions (11b, 11b) bent at right angles are continuously provided on both sides of a bottom portion (11a).
1), and the back plate (1
2) In a school bag having a front housing (13) sewn to the other surface side to form a main storage portion (10) having an upper opening, a material that can be sewn on the inner surface side of the gill member (11). The reinforcing plate material (20) is attached, and the reinforcing plate material (20) is attached.
The bottom part (11a) and side part (11) of the gore member (11)
b, 11b), and a bending groove of the folding seam (11c) that is bent outward on one side of the gore member (11). Alternatively, a school bag provided with discontinuous cut grooves (21, 21, 21 ...). 2. A gland member (1) in which side surfaces (11b, 11b) bent at right angles are continuously provided on both sides of a bottom surface (11a).
1), which is made of a material that can be sewn on the inner surface side of the above-mentioned gusset member (11), and the bottom surface portion (11a) and side surface portion (1) of this gusset member (11).
1b, 11b) and the gusset member ((1
1) A kerf for bending or a discontinuous kerf (2) is formed on a portion of the fold seam allowance portion (11c) on one surface that matches the fold portion.
After attaching a reinforcing plate material (20) provided with 1, 2, 21, ..., And sewn the other surface side of the gore member (11) along the bottom side and both sides of the front plate (13) The back plate by bending the bending seam allowance portion (11c) on one surface side of the gore member (11) outward at the bending groove or discontinuous cutting groove (21, 21, 21 ...) A method for manufacturing a school bag, wherein the bottom side and the both sides of (12) are overlapped with each other and one surface side of the gore member (11) is sewn to a back plate (12). 3. A gusset member (1) in which side portions (11b, 11b) bent at right angles are continuously provided on both sides of a bottom portion (11a).
1), which is made of a material that can be sewn on the inner surface side of the above-mentioned gusset member (11), and the bottom surface portion (11a) and side surface portion (1) of this gusset member (11).
1b, 11b) and the folded part (11)
The bending groove or the discontinuous cutting groove (21,
, 21) are attached to the reinforcing plate material (20), and the reinforcing plate material (20) is overlapped with the bent seam allowance portion (11c) at the bent seam allowance portion (11c). The reinforcing plate member (20) is omitted in a portion that fits between the rounded start end side notch (11d1) and the rounded end side notch (11d3), and the other surface side of the above-mentioned gore member (11) is moved forward. After stitching along the bottom side and both sides of the plate (13), the bending seam allowance portion (11c) on one surface side of the gore member (11) is bent or cut into discontinuous cut grooves (21, (21, 21 ...) Bent outward and overlap along the bottom side and both sides of the back plate (12), and one side of the gill member (11) is sewn to the back plate (12). Manufacturing method for school bags.