JPH0740174U - File - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to provide a file with a rich three-dimensional effect, a luxurious and profound feeling, and to improve the work efficiency during file manufacturing. [Structure] A synthetic resin file in which a front cover portion, a back portion, and a back cover portion are continuously and integrally formed,
The back portion is formed in a curved shape on the outside, and a plurality of streak-shaped protrusions are formed at predetermined positions on the back portion at predetermined intervals in the width direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a file for binding loose-leaf paper, documents, storage bags, etc., and more particularly to a file having a curved back portion of a file made of synthetic resin.

[0002]

[Prior art]

 Conventionally, as a file having a curved back portion, for example, a structure disclosed in Japanese Patent Laid-Open No. 3-254999 is known as a conventional example.

The file of this conventional example has a structure in which the back of a file made of a thermoplastic resin is formed in a curved shape on the outside, and curved reinforcing ribs are integrally formed in the width direction at a plurality of positions on the back. .

[0004]

[Problems to be solved by the device]

 In the file of this conventional example, since the reinforcing rib material which is separate from the file surface material is used, the alignment work for forming the reinforcing rib inside the back part becomes complicated when manufacturing the file, and However, there was a problem that the number of parts increased and the manufacturing cost increased.

Further, the file surface material and the reinforcing rib material are separately configured, and the reinforcing rib material is heat-welded by ultrasonic waves or high frequencies, and is integrally welded to the inside of the curved back portion under pressure. Therefore, the reinforcing ribs are formed so as to project inside the back portion.

Therefore, when formed in such a state, when a sheet-shaped material such as a synthetic resin is ultrasonically welded to the inside of the back part or when various kinds of binding tools are riveted, the reinforcing ribs are projected. It is said that the work must be avoided, and that the formation of the sheet and the locking of the binding device are difficult, and the welding work is also difficult, which makes it difficult to attach the sheet and lock the binding device. There was a problem.

Therefore, in the file in the conventional example, it is possible to improve the work efficiency at the time of manufacturing the file, to keep the manufacturing cost low, and to easily form a sheet material such as a synthetic resin and various kinds of binding tools inside the back part. There are issues that must be resolved in order to be able to be installed.

[0008]

[Means for Solving the Problems]

 As a specific means for solving the problems of the conventional example, the present invention is a synthetic resin file in which a front cover portion, a back portion, and a back cover portion are continuously and integrally formed. The present invention provides a file characterized by being formed in a curved shape on the outside, and a plurality of streak-like protrusions are formed at predetermined positions on the back at predetermined intervals in the width direction. A plurality of protrusions are formed by coloring with various colors on the outside, and a back reinforcement member is integrally formed on the inside of the back along the curved surface. The synthetic resin is polypropylene.

[0009]

[Action]

 Since the back of the file is curved outward, the entire file has a three-dimensional effect, and it feels luxurious and solid like, for example, an encyclopedia or an expensive external book. Furthermore, when the back of the file is held by hand, the curved surface of the back fits comfortably in the palm and is easy to hold.

Further, since a plurality of streak-like protrusions are formed at a predetermined position on the back at a predetermined interval in the width direction, the protrusions serve as ribs. In addition, the strength of the back part can be increased, and the curved shape can be maintained, that is, the return phenomenon can be prevented. Also, since no separate reinforcing ribs protrude inside the back part, it is easy to ultrasonically weld a sheet-like material such as synthetic resin to the inside of the back part, or to rivet various binding tools. You can do it.

[0012] Then, the protruding portion serves as a design accent, and the entire file looks more and more three-dimensional, luxurious and profound.

[0012] Furthermore, since the protrusions are formed by coloring with various colors on the outside of the protrusions, the design accent of the protrusions is emphasized, and visually luxurious and solid feeling is increased. To do.

In addition, since the back reinforcement is integrally formed on the inside of the back along the curved surface, the strength of the back can be increased and the curved shape can be maintained, that is, the return phenomenon can be prevented. You can

[0014]

【Example】

 Next, an example of implementing the present invention will be described with reference to the drawings. First, in FIGS. 1 and 2, reference numeral 1 indicates a file. The file 1 is made of a synthetic resin material such as polypropylene, and has a front cover portion 2, a back portion 3, and a back cover portion. 4 and are formed continuously and integrally.

The cover portion 2 is formed in a substantially rectangular shape, and one end side thereof is integrally formed with the back portion 3 via the hinge portion 5a, and the back portion 3 is connected to the back cover portion via the hinge portion 5b. It is formed integrally with 4. That is, the front cover portion 2 and the back cover portion 4 are integrally formed so as to be freely bendable on the back portion 3 via the hinge portions 5a, 5b.

It should be noted that the hinge portions 5a and 5b are usually formed one by one, however, for example, when the file surface material is thick, a plurality of hinge portions, for example, two hinge portions should be provided. Thus, the front cover 2 and the back cover 4 can be smoothly bent (not shown).

The back portion 3 is formed in a curved shape on the outer side, and the entire file 1 can be seen with a three-dimensional effect, giving a gorgeous and high-class image, and the back portion 3 of the file 1 can be formed. When held by hand, the curved surface of the back part 3 fits comfortably in the palm and is easy to hold.

Next, FIGS. 3 and 4 show a second embodiment. In the second embodiment, the same parts as those in the first embodiment are designated by the same reference numerals and their details are omitted. The back portion 3 is formed in a curved shape on the outer side, and a plurality of stripe-shaped protrusions 6 are formed at predetermined positions on the back portion 3 at predetermined intervals in the width direction.

Therefore, the protrusion 6 plays the role of a rib, so that the strength of the back portion can be increased and the curved shape can be maintained, that is, the return phenomenon can be prevented. In addition, these protrusions give a design accent, and the entire file looks rich and three-dimensional, giving it a luxurious and profound feel.

As shown in FIGS. 4 and 5, the inside of the back portion 3 has a concave portion 7 in which the portion corresponding to the protruding portion 6 is concavely depressed. Therefore, since there is no separate reinforcing rib inside the back part 3, it is necessary to ultrasonically weld a sheet-like material such as synthetic resin to the inside of the back part 3 or to rivet various kinds of binding tools. It can be done easily.

Further, if the protrusion 6 is formed by coloring with various colors, for example, when a gold foil is pressed onto the protrusion 6, that portion shines gold, The design accent of the output portion 6 is further emphasized, the luxurious and profound feeling is increased, and the luxury feeling of the file 1 can be further enhanced.

Next, FIG. 6 shows a third embodiment. In the third embodiment, the same parts as those in the first embodiment and the second embodiment are designated by the same reference numerals and the details thereof will be omitted. In the third embodiment, in order to reinforce the back portion 3, a back portion reinforcing material 8 made of the same material or a different material is integrally attached to the inside.

The back reinforcement member 8 can enhance the strength of the back portion 3 and can maintain the curved shape, that is, prevent the return phenomenon.

Next, a method of manufacturing the file 1 configured as above will be described. First, prepare a file cover material obtained by stamping a polypropylene resin plate into a predetermined size, and forming hinge parts 5a and 5b between the back part 3 and the front cover part 2 and the back cover part 4, and further According to the requirements, various display printing and name insertion are performed at predetermined positions on the front cover 2 and the back cover 4, and pockets and the like are welded to form a flat file cover.

Then, the back portion of the file surface material is placed on the preheating device to preheat the file surface material to a softened state. Next, the file surface material in the softened state is pressed. That is, the file 1 having the curved back portion 3 can be manufactured by placing the file surface material between the female type and the male type and performing the press working.

If a female type and a male type of the press working machine are provided with a concave groove and a convex portion, respectively, at the same time as the press working, a stripe-shaped projecting portion is formed at a predetermined position on the back portion 3. 6 are formed in multiple lines.

Further, as a means for manufacturing the file of the third embodiment, the back reinforcing material 8 is preliminarily adhered to the formation position of the back 3 by an appropriate adhering means, or the back reinforcing material 8 is superposed at the time of press working. They are attached integrally by applying sound waves or high frequencies together.

The back portion 3 formed as described above is ultrasonically welded to the inside of the curved file 1 having a back portion 3 and synthetic resin or the like is ultrasonically welded, and various kinds of binding tools are riveted. By doing so, the production of the file 1 having a rich three-dimensional effect is completed.

[0029]

[Effect of device]

 As described above, the file according to the present invention is a synthetic resin file in which the front cover portion, the back portion, and the back cover portion are continuously formed integrally, and the back portion is curved outward. By being formed into, the entire file has a rich three-dimensional effect, and it feels luxurious and solid like, for example, an encyclopedia or an expensive external book, so that an image of a high-class file can be created. Furthermore, when the back of the file is held by the hand, the curved surface of the back is easily fit in the palm of the hand, and the feeling of holding by the hand is excellent.

In addition, a plurality of stripe-shaped protrusions are formed at predetermined positions in the width direction at predetermined intervals in the width direction, so that the protrusions serve as ribs, so that the back part is formed. It is possible to increase the strength and to prevent the curved shape, that is, the return phenomenon, so that a file of good quality can be manufactured. In addition, since a separate reinforcing rib does not protrude inside the back part, it is possible to ultrasonically weld a sheet-like material such as synthetic resin to the inside of the back part, or to rivet-fix various kinds of binding tools. It has an excellent effect that it can be easily performed and the work efficiency can be improved.

The protrusions serve as a design accent, and the entire file looks more and more three-dimensional. It feels luxurious and heavy, which enhances the high-quality image of the file. It has an excellent effect.

Further, by forming the protrusions with a plurality of colors by coloring with various colors, the design accent of the protrusions is further emphasized, and a visually luxurious and solid feeling is obtained. Since the number of files increases, the excellent effect that the quality of the file can be further enhanced is achieved.

Further, by integrally forming the back reinforcing member inside the back along the curved surface, it is possible to enhance the strength of the back and to maintain the curved shape, that is, the return target. Since it can be prevented, it has various excellent effects that a file of good quality can be manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of a file according to the present invention.

FIG. 2 is a perspective view showing a part of a main part of the file according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a second embodiment of a file according to the present invention.

FIG. 4 is a perspective view showing a part of a main part of a file according to a second embodiment of the present invention.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a perspective view showing a part of a main part of a file according to a third embodiment of the present invention.

[Explanation of symbols]

 1 File 2 Cover Part 3 Back Part 4 Back Cover Part 5a Hinge Part 5b Hinge Part 6 Projection Part 7 Recessed Part 8 Back Part Reinforcement Material

Claims (5)

[Scope of utility model registration request] 1. A synthetic resin file in which a front cover portion, a back portion, and a back cover portion are continuously and integrally formed, and the back portion is curved outward. The featured file. 2. The file according to claim 1, wherein a plurality of streak-like protrusions are formed at predetermined positions on the back portion at predetermined intervals in the width direction. 3. The file according to claim 2, wherein the plurality of protrusions are formed on the outside by coloring with various colors. 4. The file according to claim 1, wherein a back reinforcement is integrally formed inside the back along a curved surface. 5. The file according to claim 1, 2, 3, or 4, wherein the synthetic resin is polypropylene.