JPH02286293A - File and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a file and a method for manufacturing the same, and in particular,
This invention relates to a box-shaped file with a bottom and a manufacturing method thereof.

(Prior Art) FIG. 9 is a perspective view showing an example of a conventional file, and FIG. 10 is a developed view thereof. This file 1 includes a rectangular front member 2, and on both sides of this front member 2, a right gore member 3 and a left gore member 4 are formed so as to be bendable, and the side parts of these gore members 3 and 4 are bent. Joining members 3a and 4a are formed respectively on the connecting members 3a and 4a. Further, a bottom member 5 is bendably formed at the lower end of the front member 2, and a rear member 6 is bendably formed on the opposite side of the front member 2 to the bottom member 5.

And this file 1 is made by folding each member and then
By bonding the joining members 3a and 4a to both ends of the rear member 6, the rear member 6 is fixed in a box shape with a bottom.

(Problem H to be solved by the invention) However, in this file 1, there is a gap between the lower end of the right gore member 3 and one end of the bottom member 5, and between the lower end of the left gore member 4 and the bottom member 5.
A gap will be created between each end and the other end. Therefore, in this file 1, thin objects such as pencils and clips stored therein may accidentally fall out of the gaps.

Therefore, the main object of the present invention is to provide a file and a method for manufacturing the same, in which the items stored inside will not fall out.

(Means for Solving the Problems) A file according to the present invention is a bottomed box-shaped file including a rectangular bottom member and a gusset member having the same width as the bottom member, and the end thereof is a long flat part of the bottom member. This file is provided with a sealing piece that is bendably connected to the end of the direction and the lower end of the gusset member, and that can be bent inward as a whole.

The file manufacturing method according to the present invention includes (a) the following (
A step of preparing a sheet material comprising (A) to (C);
) a rectangular bottom member; (B) a rectangular gore member having the same width as the bottom member and arranged so that its lower end is perpendicular to the longitudinal end of the bottom member; and (C) The two sides are bendably connected to the longitudinal end of the bottom member and the lower end of the gusset member, and the straight center part between those two sides is bendable and does not intersect with the center part. A linear intermediate portion extending from the midpoint of the two sides to the other side is formed to be bendable, and further,
(b) a step of assembling the sheet material into a substantially bottomed box shape so that the sealing piece is on the outside; (c) (d) folding the sealing piece inward by folding the central portion and the intermediate portion by pressing the sealing piece inward;
This method of manufacturing a file includes the step of folding the sealing piece inside the file body by further pushing the sealing piece inward.

(Function) The sealing piece closes the space between the lower end of the gore member and the end of the bottom member of the file.

(Effects of the Invention) According to the present invention, since the space between the gore member and the bottom member of the file is closed, thin objects such as pencils and paper clips will not fall out from inside the file.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Example) Fig. 1 is a partially cutaway perspective view showing an embodiment of the present invention, Fig. 2 is a developed view of the main parts thereof, and Figs. 3A and 3B are enlarged partial views of Fig. 2. It is a diagram.

This file 10 includes a file body 12 in the shape of a box with a bottom.

That is, this file main body 12 includes a rectangular front member 14, and a rectangular right gossamer member 16 is bendably connected to one end of the front member 14 in the width direction. This right gore member 16 has a central portion 16a in its width direction.
(The part indicated by the dashed line in FIG. 2) is formed to be bendable.

Further, one end of a rectangular rear member 18 in the width direction is bendably connected to the other end of the right gore member 16 in the width direction. This rear member 18 is formed to have approximately the same size as the front member 14.

Further, one end of a strip-shaped left gossamer member 20 in the width direction is bendably connected to the other end of the front member 14 in the width direction. This left gore member 20 is formed to have the same width as the right gore member 16, and has a central portion 20a in the width direction.
(The part indicated by the dashed line in FIG. 2) is formed to be bendable.

Further, at the other end in the width direction of the left gore member 20, an elongated joining member 22 is formed so as to be bendable. This joining member 22 is adhered to the other end of the rear member 18 in the width direction. Thereby, the front member 14. Right gore member 16. The rear member 18 and the left gossamer member 20 are fixed in the shape of a square tube.

Further, at the lower end of the front member 14, a rectangular bottom member 24 having the same width as the right gore member 16 and the left gore member 20 is formed so as to be bendable. The bottom member 24 is formed such that a central portion 24a in the width direction (the portion indicated by the dashed line in FIG. 2) is bendable.

Furthermore, an elongated joining member 26 is formed at the tip of the bottom member 24. This joining member 26 is adhered to the lower end of the rear member 18. Thereby, this bottom member 24 is arranged in the opening at the lower end of each member 14, 16, 18 and 2o fixed in the shape of a rectangular tube.

Therefore, the front member 14. Right gore member 16. Back gutter member 1
8. The left side member 20 and the bottom member 24 constitute a box-shaped file body 12 with a bottom.

Further, at the lower end of the right gusset member 16 and at one end in the longitudinal direction of the bottom member 24, a sealing piece 28 having a substantially right-angled isosceles triangular shape is provided.
Connected in a bendable manner.

That is, as particularly shown in FIG. 3A, the two sides defining the right angle of the sealing piece 28 are bendably connected to the lower end of the right gusset member 16 and one end of the bottom member 24, respectively. In addition, in this sealing piece 28, a straight central portion 28a passing through the intersection point Pi between the lower end of the right gusset member work 6 and one end of the bottom member 24 and perpendicular to its oblique side is formed to be bendable. ing. This sealing piece 28 is bent inside the file body 12, especially as shown in FIG. In this case, the two sides defining the right angle of the sealing piece 28 and the central portion 28a are bent inward. Therefore, the sealing piece 28 closes the space between the lower end of the right gusset member 16 and one end of the bottom member 24.

In addition, when the sealing piece 28 is unfolded, the sealing piece 28 has a right gusset member 1 as shown in FIG. 3A.
A straight line portion 28b connected in a straight line to the center portion 16a of the bottom member 24 and a straight line portion 28c connected in a straight line to the center portion 24a of the bottom member 24 are each formed to be bendable.

These straight portions 28b and 28c are connected to each member 14.
16. 18° This is a part that can be bent in order to efficiently assemble 20 and 24 into the file main body 12.

Furthermore, in this sealing piece 28, a straight line passing through the intersection P2 between the lower end of the right gossamer member 16 and the straight line part 28b, and having an angle of, for example, 15 degrees from the straight line part 28b without intersecting the center part 28a. The intermediate portion 28d is formed to be bendable. Similarly, in this sealing piece 28, passing through the intersection P3 between one end of the bottom member 24 and the straight portion 26c,
and a straight intermediate portion 286 that does not intersect with the central portion 28a and has an angle of, for example, 15 degrees from the straight portion 28c.
It is also formed to be bendable. These middle parts 28
d and 28e are bent once when the sealing piece 28 is bent inside the file body 12,
This is to enable the sealing piece 28 to be bent inside the file body 12.

Furthermore, this sealing piece 28 has an intermediate portion 28d and a
For example, 30 degree V-shaped notches 30a and 30b are formed on the oblique side portions connected to 8e, respectively. These notches 30a and 30b are provided to facilitate bending of the intermediate portions 28d and 28e.

On the other hand, a sealing piece 28 having a structure symmetrical to the above-mentioned sealing piece 28 is also provided at the lower end of the left side member 20 and at the other end in the longitudinal direction of the bottom member 24.
' are connected in a bendable manner. That is, this sealing piece 28' is formed at approximately right angle 2 as shown in FIG. 3B.
It is formed into an equilateral triangular shape, and the two sides defining the right angle are:
It is bendably connected to the lower end of the left side member 2° and the other end of the bottom member 24, respectively.

This sealing piece 28' also has a linear central portion 28a' and linear portions 28b' and 28c' symmetrically with the sealing piece 28.
and intermediate portions 28d' and 288' are formed to be bendable, respectively, and ■-shaped notches 30a' and 30b' are formed on the oblique sides of the intermediate portions 28d' and 286', respectively. has been done.

This sealing piece 28' is also bent inside the file main body 12, with the two sides defining the right angle and the central portion 28a' being bent. Therefore, the sealing piece 28' also closes the space between the lower end of the left gore member 20 and the other end of the bottom member 24.

On the other hand, a substantially rectangular lid member 32 is provided at the upper end of the front member 14.
are connected in a bendable manner. The lid member 32 has, for example, four bendable straight portions 32a, 32a, . . . formed at intervals in its longitudinal direction.

Further, at the center of the tip of the lid member 32 and the center of the upper part of the rear member 18, for example, a disc-shaped sealing member 34 is provided.
a and 34b are fixed, and an end of a string 36 is fixed to one sealing member 34a. Therefore, by wrapping the string 36 around the sealing members 34a and 34b, the lid member 32 can be fixed in a state where the opening of the file main body 12 is sealed.

Next, the process of assembling this file 10 will be explained.

First, each member constituting the file body 12, the sealing piece, and the lid member are integrated by punching a sheet of synthetic resin such as polypropylene into a sheet material 10' having a predetermined shape, as shown in FIG. is formed.

Furthermore, in this sheet material 10', the connecting portions of each member and the portions indicated by the dashed-dotted lines in FIGS. By bending the part,
It is said to be bendable.

Then, as shown in FIG. 4, the central portion 20a of the left gossamer member 20 and the straight portion 28b' of the sealing piece 28' are bent. Furthermore, the center portion 16a of the right gusset member 16 and the straight portion 28b of the sealing piece 28 are also bent.

In this state, the outer surface of the joining member 22 is bonded to the inner surface of the other end of the rear member 18 by, for example, adhesive or ultrasonic welding.

Next, as shown in FIG.
a, the straight portion 28c of the sealing piece 28 and the straight portion 28c' of the sealing piece 28' are bent. Then, the inner surface of the joining member 26 is bonded to the outer surface of the lower end of the rear member 18 by, for example, adhesive or ultrasonic welding.

Then, as shown in FIG. 6, the front member 14, the right gore member 16. A mold jig 40 is placed inside the rear member 1B, the left gore member 20, and the bottom member 24. This mold jig 40 is
It includes a rectangular parallelepiped-shaped first mold 42 having a cross section of approximately the same size as the bottom member 24 .

At the center of one end surface of the first mold 42 in the longitudinal direction is a rectangular parallelepiped-shaped second mold 44 that is shorter than the length of the bottom member 24 in the longitudinal direction and has a width that is approximately the same as the width of the bottom member 24. is formed.

Furthermore, a plate-shaped piece member 46a is formed in the first mold 42, extending from one end of one side surface in the longitudinal direction of the side surface. Further, a plate-shaped piece member 48a extends from one end in the longitudinal direction of the end surface of the second mold 44 in the longitudinal direction of the end surface.
is formed. In this case, these pieces 46a and 48a are formed so that a gap is created between their ends.

Similarly, a plate-shaped piece member 46b is formed extending from one end of the other side surface of the first mold 42 in the longitudinal direction of that side surface,
Further, a plate-shaped piece member 48b is formed extending from the other end in the longitudinal direction of the end face of the second mold 44 in the longitudinal direction of the end face, and these piece members 46b and 48b are also arranged between their ends. It is formed so that a gap is created.

Then, this mold jig 40 is inserted into the inside of the front member 14 etc. from the second mold 44 side. In this case, the mold jig 4
0 is arranged such that the end surface of the second mold 44 is separated from the bottom member 24 by, for example, a distance of about 30H.

Then, as shown in FIG. 7, by pressing the central portions 28a and 28a' of the sealing pieces 28 and 28' inward with, for example, a rectangular pushing jig 50, the central portions 28a and 28a' of the sealing pieces 28 and 28' are
8a and 28a' are bent inward, and their intermediate portions 28d and 28e and 28d' and 28e
′ and are bent outward. In this case, the intermediate portions 28d, 28e, 28d' and 28e' are connected to the notches 30a, 30b, 30a'.
and 30b' are formed, so that it can be easily bent outward.

Then, as shown in FIG. 8, the mold jig 40 is inserted further in so that the end surface of the second mold 44 contacts the inner surface of the bottom member 24. In this state, a bottomed box-shaped file main body 12 is formed by the front member 14 and the like. Then, by further pushing the central portions 28a and 28a' of the sealing pieces 28 and 28' inward using the pushing jig 50, the sealing pieces 28 and 28' are placed inside the file body 12. In this case, the sealing piece 28 or 28' and the pushing jig 50 are the piece member 46a of the molding jig 40.
and 48a or between the piece members 46b and 48b, so that the sealing pieces 28 and 28' can be completely placed inside the file body 12.

Then, the mold jig 40 is pulled out from within the file body 12. In this state, the sealing pieces 28 and 28' are bent inward at their central portions 28a and 283', as shown in FIG. It is bent.

Finally, the sealing member 34a and the string 36 are bonded to the center of the tip of the lid member 32, and the sealing member 34b is bonded to the center of the upper part of the rear member 18, respectively, with adhesive, for example.

In this way, file 10 is created. In this file 10, the sealing pieces 28 and 28' close the space between the right gusset member 16 and the bottom member 24 and the space between the left gusset member 20 and the bottom member 24, so that a pencil or the like can be inserted between them. Thin objects such as paper clips will not fall out when pulled out.

In addition, in the above-mentioned embodiment, the file body and the sealing piece were formed of synthetic resin sheets, but materials other than synthetic resin sheets can be used to form them, such as paper materials that can be folded. Materials are available.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention. FIG. 2 is an exploded view of the main parts of the embodiment shown in FIG. 3A and 3B are partially enlarged views of FIG. 2, respectively. 4 to 8 are plan views showing the steps of manufacturing the embodiment shown in FIG. 1, respectively. FIG. 9 is a perspective view showing an example of a conventional file. FIG. 10 is a developed diagram of the file shown in FIG. In the figure, 10 is the file, 12 is the file body, 1
4 is a front member, 16 is a right side member, 18 is a rear member, 20
is the left side member, 24 is the bottom member, 28 and 28' are the sealing pieces, 28a and 28a' are the center portions of the sealing pieces, 28 d
, 28e, 28d' and 28e' are the middle portions of the sealing pieces, 30a, 30b, 3Qa' and 30
b' indicates a notch. Patent applicant Licht Sangyo Co., Ltd. Agent Patent attorney Oka 1) Zen Kei Figure 3A Figure 3B Figure 10 Figure 10

Claims (1)

[Scope of Claims] 1. A box-shaped file with a bottom including a rectangular bottom member and a gore member having the same width as the bottom member, the end of which is the longitudinal end of the bottom member and the lower end of the gore member. A file characterized by being provided with a sealing piece that is bendably connected to the two sides and that can be bent inward as a whole. 2. (a) A step of preparing a sheet material comprising the following (A) to (C): (A) a strip-shaped bottom member; (B) having the same width as the bottom member and whose lower end is (C) a rectangular goss member disposed perpendicular to the longitudinal end of the bottom member; and (C) two sides thereof can be bent into the longitudinal end of the bottom member and the lower end of the goss member; , a linear central portion between the two sides is formed to be bendable, and each linear intermediate portion extends from the midpoint of the two sides to the other side without intersecting the central portion. a sealing piece formed to be bendable and further having a notch formed on the other side so as to connect to the intermediate portion; (b) the sheet material is substantially shaped so that the sealing piece is on the outside; assembling into a bottom box shape; (c) folding the central portion and the intermediate portion by pushing the sealing piece inward, and (d) folding the sealing piece inward; and folding the sealing piece inside the file body by pressing the piece further inward.